/* roulang page: index */
:root {
            --deep-green: #0B1F19;
            --dark-pine: #0D241C;
            --mid-green: #16382C;
            --lime-green: #B7F04A;
            --lime-dark: #9DD33A;
            --accent-orange: #FF4E2D;
            --accent-orange-hover: #E63E1F;
            --warm-black: #1C1C1A;
            --warm-white: #F4F2EC;
            --card-white: #FFFFFF;
            --soft-gray: #6B7470;
            --muted-text: #4C5A53;
            --light-border: #E4E2DB;
            --pale-green-bg: #EFF7E2;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(11, 31, 25, 0.10);
            --shadow-card-hover: 0 16px 40px rgba(11, 31, 25, 0.16);
            --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-title: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-mono: 'DIN Alternate', 'Roboto Condensed', 'Arial Narrow', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-mid: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height-desktop: 72px;
            --nav-height-mobile: 60px;
            --bottom-nav-height: 64px;
            --safe-bottom: env(safe-area-inset-bottom, 0px);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--warm-black);
            background-color: var(--warm-white);
            padding-bottom: 84px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            -webkit-tap-highlight-color: transparent;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(183, 240, 74, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ::selection {
            background: var(--lime-green);
            color: var(--deep-green);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
            color: var(--warm-white);
            position: sticky;
            top: 0;
            z-index: 200;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
            height: var(--nav-height-desktop);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
            line-height: 1;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.88;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--lime-green) 0%, #8ABC34 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--deep-green);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(183, 240, 74, 0.3);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .desktop-nav li a {
            display: block;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            border-radius: 6px;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast), color var(--transition-fast);
            position: relative;
        }

        .desktop-nav li a:hover {
            background: rgba(183, 240, 74, 0.12);
            color: var(--lime-green);
        }

        .desktop-nav li a.active {
            color: #fff;
            background: rgba(183, 240, 74, 0.10);
        }

        .desktop-nav li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--lime-green);
            border-radius: 2px;
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }
            .site-header {
                height: var(--nav-height-mobile);
            }
            .site-header .container {
                justify-content: flex-start;
            }
            .brand-logo {
                font-size: 1.1rem;
            }
            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
                border-radius: 8px;
            }
        }

        /* ========== BOTTOM MOBILE NAV ========== */
        .bottom-mobile-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: calc(var(--bottom-nav-height) + var(--safe-bottom));
            padding-bottom: var(--safe-bottom);
            background: linear-gradient(180deg, #0A1A15 0%, var(--deep-green) 100%);
            z-index: 300;
            box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.35);
            border-top: 1px solid rgba(183, 240, 74, 0.15);
        }

        @media (max-width: 1023px) {
            .bottom-mobile-nav {
                display: flex;
                align-items: center;
                justify-content: space-around;
            }
            body {
                padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 18px);
            }
        }

        .bottom-mobile-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.7rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            flex: 1;
            height: 100%;
            transition: color var(--transition-fast);
            -webkit-tap-highlight-color: transparent;
        }

        .bottom-mobile-nav a i {
            font-size: 1.2rem;
            margin-bottom: 1px;
        }

        .bottom-mobile-nav a.active {
            color: var(--lime-green);
            background: rgba(183, 240, 74, 0.08);
        }

        .bottom-mobile-nav a:hover {
            color: var(--lime-green);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            color: #fff;
            padding: 100px 0 110px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(11, 31, 25, 0.88) 0%, rgba(11, 31, 25, 0.72) 50%, rgba(11, 31, 25, 0.90) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: radial-gradient(ellipse at right center, rgba(183, 240, 74, 0.12) 0%, transparent 70%);
            z-index: 2;
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 5;
            display: grid;
            grid-template-columns: 1fr 1.6fr 1fr;
            gap: 28px;
            align-items: center;
        }

        @media (max-width: 1023px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-section {
                padding: 60px 0 70px;
            }
        }

        .hero-side {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .hero-side-item {
            background: rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(183, 240, 74, 0.22);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }

        .hero-side-item:hover {
            background: rgba(183, 240, 74, 0.12);
            border-color: rgba(183, 240, 74, 0.45);
        }

        .hero-side-item i {
            font-size: 1.6rem;
            color: var(--lime-green);
            flex-shrink: 0;
        }

        .hero-side-item .side-text {
            font-size: 0.9rem;
            line-height: 1.45;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
        }

        .hero-stage {
            position: relative;
            z-index: 6;
        }

        .hero-panel {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-dark);
            padding: 32px 28px 28px;
            color: var(--warm-black);
            border: 2px solid rgba(183, 240, 74, 0.35);
        }

        .hero-panel-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-panel-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--pale-green-bg);
            color: var(--deep-green);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 6px 12px;
            border-radius: 20px;
            letter-spacing: 0.03em;
        }

        .hero-panel-badge i {
            color: var(--accent-orange);
            font-size: 0.7rem;
        }

        .hero-panel-date {
            font-size: 0.85rem;
            color: var(--muted-text);
            font-weight: 500;
            font-family: var(--font-mono);
            letter-spacing: 0.04em;
        }

        .hero-score-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .hero-score-team {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            flex: 1;
            min-width: 80px;
        }

        .hero-score-team .team-name {
            font-weight: 800;
            font-size: 1rem;
            text-align: center;
            line-height: 1.3;
        }

        .hero-score-crest {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #E8F0DE, #D4E4C4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--deep-green);
            border: 2px solid var(--lime-green);
        }

        .hero-score-mid {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        .hero-score-number {
            font-size: 2.8rem;
            font-weight: 900;
            font-family: var(--font-mono);
            color: var(--deep-green);
            line-height: 1;
            letter-spacing: 0.02em;
        }

        .hero-score-status {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-orange);
            background: rgba(255, 78, 45, 0.10);
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.05em;
        }

        .hero-panel-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #D9D7D0, transparent);
            margin: 16px 0;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            text-align: center;
        }

        @media (max-width: 500px) {
            .hero-metrics {
                grid-template-columns: 1fr;
                gap: 8px;
            }
        }

        .hero-metric {
            background: #F7F6F2;
            border-radius: var(--radius-sm);
            padding: 12px 10px;
        }

        .hero-metric .metric-value {
            font-size: 1.45rem;
            font-weight: 900;
            color: var(--deep-green);
            font-family: var(--font-mono);
            line-height: 1;
        }

        .hero-metric .metric-label {
            font-size: 0.72rem;
            color: var(--muted-text);
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-top: 4px;
        }

        .hero-copy {
            text-align: center;
            margin-top: 22px;
        }

        .hero-copy h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 900;
            line-height: 1.18;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
            color: #fff;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
        }

        .hero-copy h1 .highlight {
            color: var(--lime-green);
            text-shadow: 0 0 24px rgba(183, 240, 74, 0.4);
        }

        .hero-copy .hero-sub {
            font-size: 1.05rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        @media (max-width: 640px) {
            .hero-copy h1 {
                font-size: 1.85rem;
            }
            .hero-copy .hero-sub {
                font-size: 0.95rem;
            }
            .hero-panel {
                padding: 22px 16px 18px;
            }
            .hero-score-number {
                font-size: 2.2rem;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--deep-green);
            color: #fff;
            border: 2px solid var(--deep-green);
        }
        .btn-primary:hover {
            background: var(--lime-green);
            color: var(--deep-green);
            border-color: var(--lime-green);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent-orange);
            color: #fff;
            border: 2px solid var(--accent-orange);
        }
        .btn-accent:hover {
            background: #fff;
            color: var(--accent-orange);
            border-color: var(--accent-orange);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--deep-green);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-outline-orange {
            background: transparent;
            color: var(--accent-orange);
            border: 2px solid var(--accent-orange);
        }
        .btn-outline-orange:hover {
            background: var(--accent-orange);
            color: #fff;
            border-color: var(--accent-orange);
        }

        /* ========== SECTION GENERAL ========== */
        .section {
            padding: 96px 0;
        }

        @media (max-width: 640px) {
            .section {
                padding: 64px 0;
            }
        }

        .section-header {
            text-align: left;
            margin-bottom: 42px;
        }

        .section-header h2 {
            font-size: clamp(1.85rem, 3vw, 2.5rem);
            font-weight: 900;
            line-height: 1.25;
            color: var(--deep-green);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-header .section-tag {
            display: inline-block;
            background: var(--pale-green-bg);
            color: var(--deep-green);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
            border: 1px solid rgba(183, 240, 74, 0.4);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--muted-text);
            max-width: 720px;
            line-height: 1.75;
        }

        /* ========== VALUE PROPOSITION EXTENDED ========== */
        .value-extended {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            padding: 52px 48px;
            margin-bottom: 80px;
            border: 1px solid var(--light-border);
        }

        @media (max-width: 640px) {
            .value-extended {
                padding: 30px 20px;
                margin-bottom: 48px;
            }
        }

        .value-extended p {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--warm-black);
            margin-bottom: 18px;
        }

        .value-extended p:last-child {
            margin-bottom: 0;
        }

        /* ========== FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1023px) and (min-width: 641px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .feature-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
            transition: box-shadow var(--transition-mid), transform var(--transition-mid), border-color var(--transition-fast);
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--lime-green);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--pale-green-bg), #E2EFCB);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.45rem;
            color: var(--deep-green);
            margin-bottom: 18px;
            border: 1px solid rgba(183, 240, 74, 0.35);
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .feature-card p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--muted-text);
            flex: 1;
        }

        .feature-link {
            margin-top: 16px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-orange);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }

        .feature-link i {
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
        }
        .feature-link:hover {
            color: var(--deep-green);
        }
        .feature-link:hover i {
            transform: translateX(4px);
        }

        /* ========== USE SCENES ========== */
        .scenes-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 1023px) {
            .scenes-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .scenes-intro {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--muted-text);
        }

        .scenes-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .scene-card {
            background: #FAF9F4;
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            border-left: 5px solid var(--lime-green);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            transition: box-shadow var(--transition-mid), transform var(--transition-mid);
        }

        .scene-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateX(4px);
        }

        .scene-card h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--muted-text);
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0A241B 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            padding: 48px 48px;
            box-shadow: var(--shadow-dark);
            position: relative;
            overflow: hidden;
        }

        .brand-intro::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(183, 240, 74, 0.18) 0%, transparent 70%);
            border-radius: 50%;
        }

        .brand-intro h2 {
            font-size: 1.8rem;
            font-weight: 900;
            margin-bottom: 18px;
            color: #fff;
            position: relative;
            z-index: 2;
        }

        .brand-intro p {
            font-size: 1.02rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        @media (max-width: 640px) {
            .brand-intro {
                padding: 30px 20px;
            }
        }

        /* ========== CASE STUDIES ========== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1023px) and (min-width: 641px) {
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .case-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .case-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--light-border);
            transition: box-shadow var(--transition-mid), transform var(--transition-mid);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .case-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background-color: #E8ECDE;
        }

        .case-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .case-card-body h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 10px;
            line-height: 1.35;
        }

        .case-card-body p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: var(--muted-text);
            flex: 1;
        }

        .case-tag {
            display: inline-block;
            background: var(--pale-green-bg);
            color: var(--deep-green);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 16px;
            margin-top: 14px;
            align-self: flex-start;
            letter-spacing: 0.04em;
        }

        /* ========== PRICING / PLANS ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        @media (max-width: 1023px) and (min-width: 641px) {
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .plan-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 2px solid var(--light-border);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition-mid), transform var(--transition-mid), border-color var(--transition-fast);
            position: relative;
        }

        .plan-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .plan-card.featured {
            background: linear-gradient(165deg, var(--deep-green) 0%, #0D2E23 100%);
            border-color: var(--lime-green);
            color: #fff;
            box-shadow: 0 16px 40px rgba(11, 31, 25, 0.28);
        }

        .plan-card.featured .plan-name,
        .plan-card.featured .plan-price,
        .plan-card.featured .plan-desc,
        .plan-card.featured .plan-features li {
            color: #fff;
        }

        .plan-card.featured .plan-features li i {
            color: var(--lime-green);
        }

        .plan-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent-orange);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.06em;
            box-shadow: 0 4px 12px rgba(255, 78, 45, 0.3);
        }

        .plan-name {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 6px;
        }

        .plan-price {
            font-size: 2.2rem;
            font-weight: 900;
            font-family: var(--font-mono);
            color: var(--deep-green);
            line-height: 1;
            margin-bottom: 6px;
        }

        .plan-desc {
            font-size: 0.9rem;
            color: var(--muted-text);
            margin-bottom: 18px;
            line-height: 1.55;
        }

        .plan-features {
            list-style: none;
            margin-bottom: 22px;
            flex: 1;
        }

        .plan-features li {
            font-size: 0.9rem;
            color: var(--muted-text);
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }

        .plan-features li i {
            color: var(--deep-green);
            font-size: 0.8rem;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .plan-card.featured .btn {
            background: var(--accent-orange);
            color: #fff;
            border-color: var(--accent-orange);
        }
        .plan-card.featured .btn:hover {
            background: #fff;
            color: var(--accent-orange);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: var(--card-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            padding: 52px 48px;
            border: 1px solid var(--light-border);
        }

        @media (max-width: 640px) {
            .deep-content {
                padding: 30px 20px;
            }
        }

        .deep-content h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .deep-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 20px 0 8px;
        }

        .deep-content p {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--muted-text);
            margin-bottom: 14px;
        }

        .deep-content .data-callout {
            background: var(--pale-green-bg);
            border-left: 4px solid var(--lime-green);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 16px 20px;
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--deep-green);
            margin: 18px 0;
            font-weight: 500;
        }

        /* ========== NEWS ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 1023px) {
            .news-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-item {
            background: var(--card-white);
            border-radius: var(--radius-md);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--light-border);
            padding: 20px 22px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: box-shadow var(--transition-mid), border-color var(--transition-fast);
            cursor: pointer;
        }

        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(183, 240, 74, 0.6);
        }

        .news-date-badge {
            flex-shrink: 0;
            background: var(--deep-green);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            text-align: center;
            font-size: 0.75rem;
            font-weight: 600;
            line-height: 1.3;
            min-width: 64px;
            letter-spacing: 0.03em;
        }

        .news-item-body {
            flex: 1;
        }

        .news-item-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--warm-black);
            margin-bottom: 4px;
            line-height: 1.45;
        }

        .news-item-body .news-summary {
            font-size: 0.88rem;
            color: var(--muted-text);
            line-height: 1.6;
        }

        .news-readmore {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-orange);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 8px;
            transition: color var(--transition-fast);
        }

        .news-readmore i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .news-readmore:hover {
            color: var(--deep-green);
        }
        .news-readmore:hover i {
            transform: translateX(4px);
        }

        .news-sidebar {
            background: #FAF9F4;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--light-border);
        }

        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 16px;
        }

        .news-sidebar ul {
            list-style: none;
        }

        .news-sidebar ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--light-border);
            font-size: 0.9rem;
            color: var(--muted-text);
            line-height: 1.5;
        }

        .news-sidebar ul li:last-child {
            border-bottom: none;
        }

        .news-sidebar ul li a {
            color: var(--warm-black);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .news-sidebar ul li a:hover {
            color: var(--accent-orange);
        }

        /* ========== ENTRY MATRIX + GUIDE ========== */
        .matrix-guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        @media (max-width: 1023px) {
            .matrix-guide-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .matrix-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
        }

        .matrix-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 18px;
        }

        .matrix-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .matrix-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--pale-green-bg);
            color: var(--deep-green);
            font-size: 0.88rem;
            font-weight: 600;
            padding: 10px 16px;
            border-radius: 20px;
            border: 1px solid rgba(183, 240, 74, 0.4);
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
        }

        .matrix-btn:hover {
            background: var(--lime-green);
            color: var(--deep-green);
            border-color: var(--lime-green);
        }

        .guide-list {
            list-style: none;
            counter-reset: guide-counter;
        }

        .guide-list li {
            display: flex;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--light-border);
            font-size: 0.92rem;
            line-height: 1.6;
            color: var(--muted-text);
            counter-increment: guide-counter;
        }

        .guide-list li:last-child {
            border-bottom: none;
        }

        .guide-list li::before {
            content: counter(guide-counter, decimal-leading-zero);
            font-weight: 900;
            color: var(--lime-green);
            font-family: var(--font-mono);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        /* ========== FORM ========== */
        .form-section {
            background: linear-gradient(135deg, #0E281F 0%, var(--deep-green) 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            padding: 52px 48px;
            box-shadow: var(--shadow-dark);
            position: relative;
            overflow: hidden;
        }

        .form-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -30px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(183, 240, 74, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .form-section h3 {
            font-size: 1.5rem;
            font-weight: 900;
            margin-bottom: 12px;
            color: #fff;
            position: relative;
            z-index: 2;
        }

        .form-section .form-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 22px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            position: relative;
            z-index: 2;
        }

        .subscribe-form input[type="text"],
        .subscribe-form input[type="email"] {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            padding: 13px 18px;
            color: #fff;
            font-size: 0.9rem;
            outline: none;
            transition: background var(--transition-fast), border-color var(--transition-fast);
            flex: 1;
            min-width: 200px;
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .subscribe-form input:focus {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--lime-green);
        }

        .privacy-note {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 12px;
            position: relative;
            z-index: 2;
        }

        /* ========== SAFETY CONTENT ========== */
        .safety-content {
            background: #F0F0E8;
            border-radius: var(--radius-xl);
            padding: 52px 48px;
            border: 1px solid #DDDAD0;
        }

        @media (max-width: 640px) {
            .safety-content {
                padding: 30px 20px;
            }
        }

        .safety-content h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--deep-green);
            margin-bottom: 16px;
        }

        .safety-content p {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--muted-text);
            margin-bottom: 14px;
        }

        .safety-content .safety-tip {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 16px 20px;
            margin: 12px 0;
            font-size: 0.92rem;
            line-height: 1.65;
            color: var(--deep-green);
            border: 1px solid var(--light-border);
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .safety-content .safety-tip i {
            color: var(--accent-orange);
            font-size: 1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-accordion .accordion {
            margin: 0;
            list-style: none;
            border: none;
        }

        .faq-accordion .accordion-item {
            margin-bottom: 12px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--light-border);
            background: var(--card-white);
            transition: border-color var(--transition-fast);
        }

        .faq-accordion .accordion-item:hover {
            border-color: rgba(183, 240, 74, 0.6);
        }

        .faq-accordion .accordion-item.is-active {
            border-color: rgba(183, 240, 74, 0.8);
            box-shadow: 0 8px 24px rgba(11, 31, 25, 0.08);
        }

        .faq-accordion .accordion-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--deep-green);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border: none;
            background: var(--card-white);
            transition: background var(--transition-fast);
            cursor: pointer;
            width: 100%;
            text-align: left;
        }

        .faq-accordion .accordion-title:hover {
            background: #F9F9F5;
        }

        .faq-accordion .accordion-title .faq-num {
            font-family: var(--font-mono);
            font-weight: 900;
            color: var(--lime-green);
            font-size: 0.9rem;
            flex-shrink: 0;
            width: 28px;
        }

        .faq-accordion .accordion-title .faq-arrow {
            margin-left: auto;
            color: var(--muted-text);
            font-size: 0.85rem;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-accordion .accordion-item.is-active .accordion-title .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-orange);
        }

        .faq-accordion .accordion-content {
            padding: 0 20px 20px 60px;
            font-size: 0.95rem;
            line-height: 1.75;
            color: var(--muted-text);
            background: #FCFCFA;
            border-top: none;
        }

        @media (max-width: 640px) {
            .faq-accordion .accordion-content {
                padding: 0 16px 16px 48px;
            }
        }

        /* ========== FINAL CTA ========== */
        .final-cta {
            background: linear-gradient(145deg, var(--deep-green) 0%, #081A14 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            padding: 80px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-dark);
        }

        .final-cta::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(183, 240, 74, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .final-cta h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 900;
            margin-bottom: 14px;
            color: #fff;
            position: relative;
            z-index: 2;
        }

        .final-cta p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .final-cta .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            position: relative;
            z-index: 2;
        }

        @media (max-width: 640px) {
            .final-cta {
                padding: 50px 20px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: linear-gradient(180deg, #081A14 0%, #050F0B 100%);
            color: rgba(255, 255, 255, 0.82);
            padding: 64px 0 28px;
            margin-top: 0;
            border-top: 1px solid rgba(183, 240, 74, 0.1);
        }

        @media (max-width: 640px) {
            .site-footer {
                padding: 44px 0 20px;
            }
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        @media (max-width: 1023px) and (min-width: 641px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        .footer-brand .brand-logo {
            font-size: 1.2rem;
            margin-bottom: 14px;
            color: #fff;
        }

        .footer-brand .brand-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 1rem;
            border-radius: 8px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 9px;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--lime-green);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--lime-green);
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        @media (max-width: 640px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* Utility */
        .text-center {
            text-align: center;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .mt-16 {
            margin-top: 16px;
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 0.85rem;
            border-radius: 6px;
        }

/* roulang page: category1 */
:root {
        --deep-green: #0B1F19;
        --dark-pine: #0D241C;
        --mid-green: #16382C;
        --lime-green: #B7F04A;
        --lime-dark: #9DD33A;
        --accent-orange: #FF4E2D;
        --accent-orange-hover: #E63E1F;
        --warm-black: #1C1C1A;
        --warm-white: #F4F2EC;
        --card-white: #FFFFFF;
        --soft-gray: #6B7470;
        --muted-text: #4C5A53;
        --light-border: #E4E2DB;
        --pale-green-bg: #EFF7E2;
        --radius-xl: 20px;
        --radius-lg: 16px;
        --radius-md: 12px;
        --radius-sm: 8px;
        --shadow-card: 0 8px 30px rgba(11, 31, 25, 0.10);
        --shadow-card-hover: 0 16px 40px rgba(11, 31, 25, 0.16);
        --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.35);
        --font-title: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        --font-body: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        --font-mono: 'DIN Alternate', 'Roboto Condensed', 'Arial Narrow', sans-serif;
        --transition-fast: 0.2s ease;
        --transition-mid: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --nav-height-desktop: 72px;
        --nav-height-mobile: 60px;
        --bottom-nav-height: 64px;
        --safe-bottom: env(safe-area-inset-bottom, 0px);
    }
    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }
    body {
        font-family: var(--font-body);
        font-size: 16px;
        line-height: 1.75;
        color: var(--warm-black);
        background-color: var(--warm-white);
        padding-bottom: 84px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
        border: 0;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-mid);
    }
    button,
    input,
    textarea,
    select {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }
    button {
        cursor: pointer;
        border: none;
        background: none;
        -webkit-tap-highlight-color: transparent;
    }
    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 3px solid rgba(183, 240, 74, 0.55);
        outline-offset: 2px;
        border-radius: 4px;
    }
    .container {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
    }
    @media (max-width: 640px) {
        .container {
            padding: 0 16px;
        }
    }

    /* ========== HEADER / NAV ========== */
    .site-header {
        background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
        color: var(--warm-white);
        position: sticky;
        top: 0;
        z-index: 200;
        box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
        height: var(--nav-height-desktop);
    }
    .site-header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-family: var(--font-title);
        font-weight: 900;
        font-size: 1.25rem;
        letter-spacing: 0.03em;
        color: #fff;
        white-space: nowrap;
        line-height: 1;
        transition: opacity var(--transition-fast);
    }
    .brand-logo:hover {
        opacity: 0.88;
    }
    .brand-logo .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--lime-green) 0%, #8ABC34 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.15rem;
        color: var(--deep-green);
        flex-shrink: 0;
        box-shadow: 0 4px 12px rgba(183, 240, 74, 0.3);
    }
    .desktop-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .desktop-nav li a {
        display: block;
        padding: 10px 16px;
        font-size: 0.95rem;
        font-weight: 500;
        color: rgba(255, 255, 255, 0.82);
        border-radius: 6px;
        letter-spacing: 0.01em;
        transition: background var(--transition-fast), color var(--transition-fast);
        position: relative;
    }
    .desktop-nav li a:hover {
        background: rgba(183, 240, 74, 0.12);
        color: var(--lime-green);
    }
    .desktop-nav li a.active {
        color: #fff;
        background: rgba(183, 240, 74, 0.10);
    }
    .desktop-nav li a.active::after {
        content: '';
        position: absolute;
        left: 16px;
        right: 16px;
        bottom: 2px;
        height: 2px;
        background: var(--lime-green);
        border-radius: 2px;
    }
    @media (max-width: 1024px) {
        .desktop-nav {
            display: none;
        }
    }
    @media (min-width: 1025px) {
        .desktop-nav {
            display: flex;
        }
    }

    /* ========== MOBILE BOTTOM NAV ========== */
    .mobile-bottom-nav {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 300;
        background: var(--deep-green);
        height: calc(var(--bottom-nav-height) + var(--safe-bottom));
        padding-bottom: var(--safe-bottom);
        box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.3);
        border-top: 1px solid rgba(183, 240, 74, 0.15);
    }
    .mobile-bottom-nav .bottom-nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-around;
        height: var(--bottom-nav-height);
    }
    .mobile-bottom-nav .nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        font-size: 0.7rem;
        color: rgba(255, 255, 255, 0.55);
        transition: color var(--transition-fast);
        padding: 0 4px;
        min-width: 56px;
    }
    .mobile-bottom-nav .nav-item i {
        font-size: 1.15rem;
        transition: color var(--transition-fast);
    }
    .mobile-bottom-nav .nav-item.active {
        color: var(--lime-green);
    }
    .mobile-bottom-nav .nav-item.active i {
        color: var(--lime-green);
    }
    .mobile-bottom-nav .nav-item:hover,
    .mobile-bottom-nav .nav-item:focus-visible {
        color: var(--lime-green);
    }
    @media (max-width: 640px) {
        .mobile-bottom-nav {
            display: block;
        }
        body {
            padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 12px);
        }
    }

    /* ========== PAGE HERO ========== */
    .page-hero {
        background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 55%, #0F2A20 100%);
        color: #fff;
        padding: 56px 0 64px;
        position: relative;
        overflow: hidden;
    }
    .page-hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.18;
        z-index: 0;
    }
    .page-hero::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(180deg, rgba(11,31,25,0.65) 0%, rgba(11,31,25,0.92) 100%);
        z-index: 1;
    }
    .page-hero .container {
        position: relative;
        z-index: 2;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.65);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--lime-green);
        transition: color var(--transition-fast);
    }
    .breadcrumb a:hover {
        color: #fff;
    }
    .breadcrumb .separator {
        color: rgba(255, 255, 255, 0.35);
    }
    .page-hero h1 {
        font-family: var(--font-title);
        font-size: 2.6rem;
        font-weight: 900;
        line-height: 1.2;
        margin: 0 0 16px;
        color: #fff;
        letter-spacing: 0.02em;
    }
    .page-hero .hero-sub {
        font-size: 1.05rem;
        color: rgba(255, 255, 255, 0.78);
        max-width: 720px;
        line-height: 1.8;
        margin-bottom: 24px;
    }
    .hero-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 8px;
    }
    .hero-tags .tag-chip {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 500;
        background: rgba(183, 240, 74, 0.14);
        color: var(--lime-green);
        border: 1px solid rgba(183, 240, 74, 0.3);
        transition: background var(--transition-fast);
    }
    .hero-tags .tag-chip:hover {
        background: rgba(183, 240, 74, 0.22);
    }
    @media (max-width: 640px) {
        .page-hero {
            padding: 40px 0 48px;
        }
        .page-hero h1 {
            font-size: 1.8rem;
        }
        .page-hero .hero-sub {
            font-size: 0.95rem;
        }
    }

    /* ========== SECTION BASE ========== */
    .section {
        padding: 72px 0;
    }
    .section-alt {
        background: var(--card-white);
    }
    .section-dark {
        background: var(--deep-green);
        color: #fff;
    }
    .section-header {
        margin-bottom: 40px;
    }
    .section-header h2 {
        font-family: var(--font-title);
        font-size: 2rem;
        font-weight: 800;
        color: var(--deep-green);
        margin: 0 0 12px;
        line-height: 1.3;
        letter-spacing: 0.01em;
    }
    .section-header p {
        font-size: 1rem;
        color: var(--muted-text);
        max-width: 680px;
        line-height: 1.8;
        margin: 0;
    }
    .section-dark .section-header h2 {
        color: #fff;
    }
    .section-dark .section-header p {
        color: rgba(255, 255, 255, 0.7);
    }
    @media (max-width: 640px) {
        .section {
            padding: 48px 0;
        }
        .section-header h2 {
            font-size: 1.5rem;
        }
    }

    /* ========== FILTER BAR ========== */
    .filter-bar {
        display: flex;
        align-items: center;
        gap: 10px;
        overflow-x: auto;
        padding: 8px 0;
        margin-bottom: 36px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: var(--lime-green) transparent;
    }
    .filter-bar::-webkit-scrollbar {
        height: 4px;
    }
    .filter-bar::-webkit-scrollbar-thumb {
        background: var(--lime-green);
        border-radius: 4px;
    }
    .filter-btn {
        flex-shrink: 0;
        padding: 8px 18px;
        border-radius: 24px;
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--muted-text);
        background: var(--card-white);
        border: 1px solid var(--light-border);
        transition: all var(--transition-fast);
        white-space: nowrap;
        cursor: pointer;
    }
    .filter-btn:hover {
        border-color: var(--lime-green);
        color: var(--deep-green);
        background: var(--pale-green-bg);
    }
    .filter-btn.active {
        background: var(--deep-green);
        color: #fff;
        border-color: var(--deep-green);
        box-shadow: 0 4px 12px rgba(11, 31, 25, 0.2);
    }

    /* ========== FEATURE CARDS ========== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .feature-card {
        background: var(--card-white);
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        box-shadow: var(--shadow-card);
        transition: box-shadow var(--transition-mid), transform var(--transition-mid), border-color var(--transition-fast);
        border: 2px solid transparent;
        position: relative;
    }
    .feature-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: var(--lime-green);
    }
    .feature-card .card-icon {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: var(--pale-green-bg);
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 16px;
        color: var(--deep-green);
        font-size: 1.2rem;
        transition: background var(--transition-fast), color var(--transition-fast);
    }
    .feature-card:hover .card-icon {
        background: var(--lime-green);
        color: var(--deep-green);
    }
    .feature-card h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--deep-green);
        margin: 0 0 8px;
        line-height: 1.35;
    }
    .feature-card p {
        font-size: 0.9rem;
        color: var(--muted-text);
        line-height: 1.75;
        margin: 0 0 14px;
    }
    .feature-card .card-link {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--accent-orange);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        transition: color var(--transition-fast), gap var(--transition-fast);
    }
    .feature-card .card-link:hover {
        color: var(--deep-green);
        gap: 8px;
    }
    .feature-card .card-link i {
        font-size: 0.7rem;
    }
    @media (max-width: 1024px) and (min-width: 641px) {
        .feature-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 640px) {
        .feature-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .feature-card {
            padding: 22px 18px;
        }
    }

    /* ========== SCENARIO CARDS ========== */
    .scenario-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .scenario-card {
        background: #FBF9F4;
        border-radius: var(--radius-lg);
        padding: 28px 24px;
        border-left: 4px solid var(--lime-green);
        box-shadow: 0 4px 16px rgba(11, 31, 25, 0.06);
        transition: box-shadow var(--transition-mid), transform var(--transition-mid);
    }
    .scenario-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-3px);
    }
    .scenario-card .scenario-index {
        font-family: var(--font-mono);
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--accent-orange);
        letter-spacing: 0.05em;
        margin-bottom: 10px;
        display: block;
    }
    .scenario-card h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--deep-green);
        margin: 0 0 10px;
        line-height: 1.35;
    }
    .scenario-card p {
        font-size: 0.9rem;
        color: var(--muted-text);
        line-height: 1.8;
        margin: 0;
    }
    @media (max-width: 1024px) and (min-width: 641px) {
        .scenario-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 640px) {
        .scenario-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
    }

    /* ========== PROCESS ========== */
    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .process-step {
        text-align: left;
        position: relative;
        padding: 24px 20px;
        background: var(--card-white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        border: 1px solid var(--light-border);
    }
    .process-step .step-num {
        font-family: var(--font-mono);
        font-size: 2rem;
        font-weight: 900;
        color: var(--lime-green);
        line-height: 1;
        margin-bottom: 12px;
        display: block;
    }
    .process-step h3 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--deep-green);
        margin: 0 0 8px;
    }
    .process-step p {
        font-size: 0.85rem;
        color: var(--muted-text);
        line-height: 1.7;
        margin: 0;
    }
    @media (max-width: 1024px) and (min-width: 641px) {
        .process-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
    }
    @media (max-width: 640px) {
        .process-grid {
            grid-template-columns: 1fr;
            gap: 14px;
        }
    }

    /* ========== CONTENT CARDS ========== */
    .content-card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .content-card {
        background: var(--card-white);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: box-shadow var(--transition-mid), transform var(--transition-mid), border-color var(--transition-fast);
        border: 2px solid transparent;
        cursor: pointer;
    }
    .content-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: var(--lime-green);
    }
    .content-card .card-thumb {
        aspect-ratio: 16/9;
        overflow: hidden;
        background: #e8e6df;
    }
    .content-card .card-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition-mid);
    }
    .content-card:hover .card-thumb img {
        transform: scale(1.05);
    }
    .content-card .card-body {
        padding: 20px 20px 22px;
    }
    .content-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.75rem;
        color: var(--soft-gray);
        margin-bottom: 8px;
    }
    .content-card .card-meta .meta-tag {
        display: inline-block;
        padding: 2px 10px;
        border-radius: 10px;
        background: var(--pale-green-bg);
        color: var(--deep-green);
        font-weight: 600;
        font-size: 0.7rem;
    }
    .content-card h3 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--deep-green);
        margin: 0 0 8px;
        line-height: 1.45;
    }
    .content-card p {
        font-size: 0.85rem;
        color: var(--muted-text);
        line-height: 1.7;
        margin: 0 0 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .content-card .read-more {
        font-size: 0.82rem;
        font-weight: 600;
        color: var(--accent-orange);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        transition: color var(--transition-fast), gap var(--transition-fast);
    }
    .content-card .read-more:hover {
        color: var(--deep-green);
        gap: 8px;
    }
    @media (max-width: 1024px) and (min-width: 641px) {
        .content-card-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
    }
    @media (max-width: 640px) {
        .content-card-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
    }

    /* ========== DEEP CONTENT ========== */
    .deep-content-block {
        background: var(--card-white);
        border-radius: var(--radius-xl);
        padding: 40px 36px;
        box-shadow: var(--shadow-card);
        border-left: 5px solid var(--lime-green);
    }
    .deep-content-block h3 {
        font-family: var(--font-title);
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--deep-green);
        margin: 0 0 16px;
        line-height: 1.35;
    }
    .deep-content-block h4 {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--deep-green);
        margin: 20px 0 8px;
    }
    .deep-content-block p {
        font-size: 0.95rem;
        color: var(--muted-text);
        line-height: 1.9;
        margin: 0 0 16px;
    }
    .deep-content-block ul {
        margin: 0 0 16px;
        padding-left: 20px;
    }
    .deep-content-block ul li {
        font-size: 0.95rem;
        color: var(--muted-text);
        line-height: 1.8;
        margin-bottom: 6px;
    }
    @media (max-width: 640px) {
        .deep-content-block {
            padding: 28px 20px;
        }
        .deep-content-block h3 {
            font-size: 1.2rem;
        }
    }

    /* ========== FAQ ========== */
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
        max-width: 860px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--card-white);
        border-radius: var(--radius-md);
        border: 1px solid var(--light-border);
        overflow: hidden;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }
    .faq-item:hover {
        border-color: var(--lime-green);
    }
    .faq-item.open {
        border-color: var(--lime-green);
        box-shadow: 0 6px 20px rgba(11, 31, 25, 0.08);
    }
    .faq-question {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 18px 20px;
        cursor: pointer;
        font-weight: 700;
        font-size: 1rem;
        color: var(--deep-green);
        transition: background var(--transition-fast);
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }
    .faq-question:hover {
        background: var(--pale-green-bg);
    }
    .faq-question .faq-num {
        font-family: var(--font-mono);
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--accent-orange);
        min-width: 28px;
    }
    .faq-question .faq-text {
        flex: 1;
    }
    .faq-question .faq-arrow {
        font-size: 0.8rem;
        color: var(--soft-gray);
        transition: transform var(--transition-mid);
    }
    .faq-item.open .faq-question .faq-arrow {
        transform: rotate(180deg);
        color: var(--lime-dark);
    }
    .faq-answer {
        display: none;
        padding: 0 20px 20px 62px;
        font-size: 0.9rem;
        color: var(--muted-text);
        line-height: 1.85;
    }
    .faq-item.open .faq-answer {
        display: block;
    }
    @media (max-width: 640px) {
        .faq-question {
            padding: 14px 16px;
            font-size: 0.9rem;
            gap: 10px;
        }
        .faq-answer {
            padding: 0 16px 16px 52px;
            font-size: 0.85rem;
        }
    }

    /* ========== CTA ========== */
    .cta-section {
        background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
        color: #fff;
        padding: 72px 0;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.1;
        z-index: 0;
    }
    .cta-section .container {
        position: relative;
        z-index: 1;
    }
    .cta-section h2 {
        font-family: var(--font-title);
        font-size: 2.2rem;
        font-weight: 900;
        margin: 0 0 12px;
        color: #fff;
        line-height: 1.3;
    }
    .cta-section p {
        font-size: 1rem;
        color: rgba(255, 255, 255, 0.75);
        max-width: 520px;
        margin: 0 auto 28px;
        line-height: 1.8;
    }
    .cta-actions {
        display: flex;
        justify-content: center;
        gap: 14px;
        flex-wrap: wrap;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        transition: all var(--transition-fast);
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    .btn-primary {
        background: var(--lime-green);
        color: var(--deep-green);
        box-shadow: 0 4px 16px rgba(183, 240, 74, 0.35);
    }
    .btn-primary:hover {
        background: var(--lime-dark);
        box-shadow: 0 6px 24px rgba(183, 240, 74, 0.45);
        transform: translateY(-2px);
    }
    .btn-secondary {
        background: transparent;
        color: #fff;
        border: 2px solid rgba(255, 255, 255, 0.5);
    }
    .btn-secondary:hover {
        border-color: var(--lime-green);
        color: var(--lime-green);
        background: rgba(183, 240, 74, 0.08);
    }
    .btn-orange {
        background: var(--accent-orange);
        color: #fff;
        box-shadow: 0 4px 16px rgba(255, 78, 45, 0.35);
    }
    .btn-orange:hover {
        background: var(--accent-orange-hover);
        box-shadow: 0 6px 24px rgba(255, 78, 45, 0.45);
        transform: translateY(-2px);
    }
    @media (max-width: 640px) {
        .cta-section {
            padding: 48px 0;
        }
        .cta-section h2 {
            font-size: 1.6rem;
        }
        .btn {
            padding: 12px 24px;
            font-size: 0.85rem;
        }
    }

    /* ========== PAGINATION ========== */
    .pagination-wrap {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
        margin-top: 36px;
    }
    .pagination-btn {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--muted-text);
        background: var(--card-white);
        border: 1px solid var(--light-border);
        transition: all var(--transition-fast);
        cursor: pointer;
    }
    .pagination-btn:hover {
        border-color: var(--lime-green);
        color: var(--deep-green);
        background: var(--pale-green-bg);
    }
    .pagination-btn.active {
        background: var(--accent-orange);
        color: #fff;
        border-color: var(--accent-orange);
        box-shadow: 0 4px 12px rgba(255, 78, 45, 0.3);
    }
    .pagination-btn.disabled {
        opacity: 0.35;
        pointer-events: none;
    }

    /* ========== FOOTER ========== */
    .site-footer {
        background: var(--deep-green);
        color: rgba(255, 255, 255, 0.8);
        padding: 56px 0 32px;
        border-top: 1px solid rgba(183, 240, 74, 0.12);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.4fr;
        gap: 36px;
        padding-bottom: 32px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        margin-bottom: 24px;
    }
    .footer-brand .brand-logo {
        font-size: 1.35rem;
        margin-bottom: 14px;
    }
    .footer-brand p {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.8;
        margin: 0;
        max-width: 320px;
    }
    .footer-col h4 {
        font-size: 0.9rem;
        font-weight: 700;
        color: #fff;
        margin: 0 0 14px;
        letter-spacing: 0.03em;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-col ul li {
        margin-bottom: 8px;
    }
    .footer-col ul li a {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.6);
        transition: color var(--transition-fast);
    }
    .footer-col ul li a:hover {
        color: var(--lime-green);
    }
    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 14px;
        font-size: 0.8rem;
        color: rgba(255, 255, 255, 0.5);
    }
    .footer-legal {
        display: flex;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .footer-legal a {
        color: rgba(255, 255, 255, 0.6);
        transition: color var(--transition-fast);
    }
    .footer-legal a:hover {
        color: var(--lime-green);
    }
    @media (max-width: 1024px) and (min-width: 641px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
    }
    @media (max-width: 640px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }
    }

    /* ========== UTILITY ========== */
    .text-center {
        text-align: center;
    }
    .text-left {
        text-align: left;
    }
    .mt-16 {
        margin-top: 16px;
    }
    .mt-24 {
        margin-top: 24px;
    }
    .mt-32 {
        margin-top: 32px;
    }
    .mb-16 {
        margin-bottom: 16px;
    }
    .mb-24 {
        margin-bottom: 24px;
    }
    .mb-32 {
        margin-bottom: 32px;
    }

/* roulang page: category2 */
:root {
            --deep-green: #0B1F19;
            --dark-pine: #0D241C;
            --mid-green: #16382C;
            --lime-green: #B7F04A;
            --lime-dark: #9DD33A;
            --accent-orange: #FF4E2D;
            --accent-orange-hover: #E63E1F;
            --warm-black: #1C1C1A;
            --warm-white: #F4F2EC;
            --card-white: #FFFFFF;
            --soft-gray: #6B7470;
            --muted-text: #4C5A53;
            --light-border: #E4E2DB;
            --pale-green-bg: #EFF7E2;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(11, 31, 25, 0.10);
            --shadow-card-hover: 0 16px 40px rgba(11, 31, 25, 0.16);
            --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-title: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-mono: 'DIN Alternate', 'Roboto Condensed', 'Arial Narrow', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-mid: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height-desktop: 72px;
            --nav-height-mobile: 60px;
            --bottom-nav-height: 64px;
            --safe-bottom: env(safe-area-inset-bottom, 0px);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--warm-black);
            background-color: var(--warm-white);
            padding-bottom: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            -webkit-tap-highlight-color: transparent;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(183, 240, 74, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
            color: var(--warm-white);
            position: sticky;
            top: 0;
            z-index: 200;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
            height: var(--nav-height-desktop);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
            line-height: 1;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.88;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--lime-green) 0%, #8ABC34 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--deep-green);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(183, 240, 74, 0.3);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .desktop-nav li a {
            display: block;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            border-radius: 6px;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast), color var(--transition-fast);
            position: relative;
        }

        .desktop-nav li a:hover {
            background: rgba(183, 240, 74, 0.12);
            color: var(--lime-green);
        }

        .desktop-nav li a.active {
            color: #fff;
            background: rgba(183, 240, 74, 0.10);
        }

        .desktop-nav li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--lime-green);
            border-radius: 2px;
        }

        /* ========== Mobile Bottom Navigation ========== */
        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: linear-gradient(180deg, var(--deep-green) 0%, #081814 100%);
            border-top: 1px solid rgba(183, 240, 74, 0.18);
            height: calc(var(--bottom-nav-height) + var(--safe-bottom));
            padding-bottom: var(--safe-bottom);
            box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.3);
        }

        .bottom-nav ul {
            display: flex;
            align-items: stretch;
            justify-content: space-around;
            list-style: none;
            margin: 0;
            padding: 0;
            height: 100%;
        }

        .bottom-nav ul li {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .bottom-nav ul li a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 0.65rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            width: 100%;
            height: 100%;
            padding: 6px 0;
            position: relative;
        }

        .bottom-nav ul li a i {
            font-size: 1.15rem;
            line-height: 1;
            transition: transform var(--transition-fast), color var(--transition-fast);
        }

        .bottom-nav ul li a:hover {
            color: var(--lime-green);
        }

        .bottom-nav ul li a.active {
            color: var(--lime-green);
            background: rgba(183, 240, 74, 0.08);
        }

        .bottom-nav ul li a.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20%;
            right: 20%;
            height: 2px;
            background: var(--lime-green);
            border-radius: 0 0 2px 2px;
        }

        .bottom-nav ul li a.active i {
            transform: translateY(-1px);
        }

        /* ========== Category Page Banner ========== */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(140deg, rgba(11, 31, 25, 0.92) 0%, rgba(13, 36, 28, 0.78) 45%, rgba(22, 56, 44, 0.65) 100%);
            z-index: 1;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 280px;
            height: 280px;
            border: 1px solid rgba(183, 240, 74, 0.18);
            border-radius: 50%;
            z-index: 1;
            pointer-events: none;
        }

        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 56px 0 72px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0 0 18px;
            padding: 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.8rem;
        }

        .breadcrumb li a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
        }

        .breadcrumb li a:hover {
            color: var(--lime-green);
        }

        .breadcrumb li:last-child {
            color: var(--lime-green);
            font-weight: 500;
        }

        .category-banner h1 {
            font-family: var(--font-title);
            font-size: 2.85rem;
            font-weight: 900;
            line-height: 1.18;
            color: #fff;
            margin: 0 0 18px;
            letter-spacing: 0.01em;
            max-width: 760px;
        }

        .category-banner h1 .highlight {
            color: var(--lime-green);
        }

        .category-banner .banner-desc {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            max-width: 720px;
            margin: 0;
        }

        /* ========== Filter Bar ========== */
        .filter-section {
            background: var(--card-white);
            border-bottom: 1px solid var(--light-border);
            padding: 18px 0;
            position: sticky;
            top: var(--nav-height-desktop);
            z-index: 100;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }

        .filter-section .filter-row {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            padding: 4px 0;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .filter-section .filter-row::-webkit-scrollbar {
            display: none;
        }

        .filter-label {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--deep-green);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.03em;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--muted-text);
            background: var(--warm-white);
            border: 1px solid var(--light-border);
            border-radius: 30px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .filter-tag:hover {
            background: var(--pale-green-bg);
            border-color: var(--lime-dark);
            color: var(--deep-green);
        }

        .filter-tag.active {
            background: var(--deep-green);
            color: #fff;
            border-color: var(--deep-green);
            box-shadow: 0 4px 14px rgba(11, 31, 25, 0.25);
        }

        /* ========== Card Grid ========== */
        .list-section {
            padding: 64px 0 80px;
            background: var(--warm-white);
        }

        .list-section .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .list-section .section-head h2 {
            font-family: var(--font-title);
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--deep-green);
            margin: 0;
            letter-spacing: 0.01em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .list-section .section-head h2::before {
            content: '';
            width: 4px;
            height: 28px;
            background: var(--lime-green);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .list-section .section-head .result-count {
            font-size: 0.9rem;
            color: var(--soft-gray);
            font-weight: 400;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-bottom: 48px;
        }

        .data-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 2px solid transparent;
            transition: all var(--transition-mid);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--lime-green);
            transform: translateY(-4px);
        }

        .data-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e8e6e0;
        }

        .data-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .data-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .data-card .card-cover .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(11, 31, 25, 0.82);
            color: var(--lime-green);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .data-card .card-cover .card-date {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--deep-green);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.02em;
        }

        .data-card .card-body {
            padding: 22px 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .data-card .card-body h3 {
            font-family: var(--font-title);
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--warm-black);
            margin: 0 0 10px;
        }

        .data-card .card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .data-card .card-body h3 a:hover {
            color: var(--deep-green);
        }

        .data-card .card-body .card-excerpt {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--muted-text);
            margin: 0 0 18px;
            flex: 1;
        }

        .data-card .mini-chart {
            display: flex;
            align-items: flex-end;
            gap: 4px;
            height: 42px;
            margin-bottom: 16px;
            padding-top: 4px;
        }

        .data-card .mini-chart .bar {
            flex: 1;
            background: linear-gradient(180deg, var(--lime-green) 0%, #d4f28a 100%);
            border-radius: 3px 3px 0 0;
            opacity: 0.85;
            transition: opacity var(--transition-fast);
            min-height: 6px;
        }

        .data-card .mini-chart .bar:nth-child(odd) {
            background: linear-gradient(180deg, var(--deep-green) 0%, var(--mid-green) 100%);
        }

        .data-card .mini-chart .bar:hover {
            opacity: 1;
        }

        .data-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--soft-gray);
            border-top: 1px solid var(--light-border);
            padding-top: 14px;
        }

        .data-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .data-card .card-meta span i {
            font-size: 0.75rem;
            color: var(--lime-dark);
        }

        /* ========== Pagination ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            padding: 12px 0;
        }

        .pagination-wrap .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 14px;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--card-white);
            color: var(--muted-text);
            border: 1px solid var(--light-border);
            transition: all var(--transition-fast);
        }

        .pagination-wrap .page-btn:hover {
            border-color: var(--lime-dark);
            color: var(--deep-green);
            background: var(--pale-green-bg);
        }

        .pagination-wrap .page-btn.active {
            background: var(--accent-orange);
            color: #fff;
            border-color: var(--accent-orange);
            box-shadow: 0 4px 14px rgba(255, 78, 45, 0.3);
        }

        .pagination-wrap .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== Inline CTA Section ========== */
        .inline-cta {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0D241C 55%, var(--mid-green) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            margin-bottom: 0;
            position: relative;
            overflow: hidden;
        }

        .inline-cta::before {
            content: '';
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(183, 240, 74, 0.15);
            border-radius: 50%;
            pointer-events: none;
        }

        .inline-cta .cta-text {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }

        .inline-cta .cta-text h3 {
            font-family: var(--font-title);
            font-size: 1.55rem;
            font-weight: 800;
            color: #fff;
            margin: 0 0 10px;
            letter-spacing: 0.01em;
        }

        .inline-cta .cta-text p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.72);
            margin: 0;
            line-height: 1.7;
            max-width: 500px;
        }

        .inline-cta .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 0.92rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: var(--lime-green);
            color: var(--deep-green);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--lime-dark);
            color: var(--deep-green);
            box-shadow: 0 8px 24px rgba(183, 240, 74, 0.35);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 0.92rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.45);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--lime-green);
            background: rgba(183, 240, 74, 0.1);
            color: var(--lime-green);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: linear-gradient(160deg, var(--deep-green) 0%, #081814 100%);
            color: rgba(255, 255, 255, 0.82);
            padding: 64px 0 0;
            margin-top: 0;
            border-top: 1px solid rgba(183, 240, 74, 0.12);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .site-footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 340px;
        }

        .site-footer .footer-col h4 {
            font-family: var(--font-title);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.03em;
        }

        .site-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }

        .site-footer .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.62);
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-col ul li a::before {
            content: '';
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--lime-green);
            opacity: 0.5;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--lime-green);
        }

        .site-footer .footer-col ul li a:hover::before {
            opacity: 1;
        }

        .site-footer .footer-subscribe {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }

        .site-footer .footer-subscribe input {
            flex: 1;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.88rem;
        }

        .site-footer .footer-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .site-footer .footer-subscribe input:focus {
            border-color: var(--lime-green);
            background: rgba(255, 255, 255, 0.12);
        }

        .site-footer .footer-subscribe button {
            padding: 11px 20px;
            border-radius: var(--radius-sm);
            background: var(--lime-green);
            color: var(--deep-green);
            font-weight: 700;
            font-size: 0.88rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .site-footer .footer-subscribe button:hover {
            background: var(--lime-dark);
            box-shadow: 0 4px 16px rgba(183, 240, 74, 0.3);
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 22px 0 28px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .site-footer .footer-bottom .footer-legal {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--lime-green);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .category-banner h1 {
                font-size: 2.25rem;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 28px;
            }

            .site-footer .footer-col:last-child {
                grid-column: 1 / -1;
            }

            .inline-cta {
                padding: 36px 40px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }

            .site-header .container {
                padding: 0 16px;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                border-radius: 8px;
                font-size: 0.95rem;
            }

            .desktop-nav {
                display: none;
            }

            .bottom-nav {
                display: block;
            }

            body {
                padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 10px);
            }

            .category-banner {
                min-height: 300px;
            }

            .category-banner .banner-content {
                padding: 40px 0 56px;
            }

            .category-banner h1 {
                font-size: 1.75rem;
                line-height: 1.25;
            }

            .category-banner .banner-desc {
                font-size: 0.9rem;
                line-height: 1.7;
            }

            .filter-section {
                top: var(--nav-height-mobile);
                padding: 12px 0;
            }

            .list-section {
                padding: 40px 0 56px;
            }

            .list-section .section-head h2 {
                font-size: 1.3rem;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .data-card .card-body {
                padding: 18px 18px 20px;
            }

            .data-card .card-body h3 {
                font-size: 1.05rem;
            }

            .inline-cta {
                padding: 28px 22px;
                border-radius: var(--radius-lg);
            }

            .inline-cta .cta-text h3 {
                font-size: 1.25rem;
            }

            .inline-cta .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                padding: 12px 20px;
                font-size: 0.88rem;
            }

            .site-footer {
                padding: 48px 0 0;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 28px;
            }

            .site-footer .footer-col:last-child {
                grid-column: auto;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 18px 0 30px;
                font-size: 0.72rem;
            }

            .site-footer .footer-bottom .footer-legal {
                gap: 12px;
            }

            .pagination-wrap .page-btn {
                min-width: 36px;
                height: 36px;
                padding: 0 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .category-banner h1 {
                font-size: 1.5rem;
            }

            .card-grid {
                gap: 16px;
            }

            .filter-tag {
                padding: 6px 14px;
                font-size: 0.78rem;
            }

            .filter-label {
                font-size: 0.78rem;
            }

            .data-card .card-meta {
                flex-wrap: wrap;
                gap: 8px;
                font-size: 0.72rem;
            }

            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px;
            }

            .breadcrumb li:not(:last-child)::after {
                margin-left: 4px;
            }
        }

/* roulang page: category3 */
:root {
            --deep-green: #0B1F19;
            --dark-pine: #0D241C;
            --mid-green: #16382C;
            --lime-green: #B7F04A;
            --lime-dark: #9DD33A;
            --accent-orange: #FF4E2D;
            --accent-orange-hover: #E63E1F;
            --warm-black: #1C1C1A;
            --warm-white: #F4F2EC;
            --card-white: #FFFFFF;
            --soft-gray: #6B7470;
            --muted-text: #4C5A53;
            --light-border: #E4E2DB;
            --pale-green-bg: #EFF7E2;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(11, 31, 25, 0.10);
            --shadow-card-hover: 0 16px 40px rgba(11, 31, 25, 0.16);
            --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-title: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-mono: 'DIN Alternate', 'Roboto Condensed', 'Arial Narrow', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-mid: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height-desktop: 72px;
            --nav-height-mobile: 60px;
            --bottom-nav-height: 64px;
            --safe-bottom: env(safe-area-inset-bottom, 0px);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--warm-black);
            background-color: var(--warm-white);
            padding-bottom: calc(84px + var(--safe-bottom));
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast), opacity var(--transition-fast);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            -webkit-tap-highlight-color: transparent;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(183, 240, 74, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
            color: var(--warm-white);
            position: sticky;
            top: 0;
            z-index: 200;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
            height: var(--nav-height-desktop);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
            line-height: 1;
            transition: opacity var(--transition-fast);
        }

        .brand-logo:hover {
            opacity: 0.88;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--lime-green) 0%, #8ABC34 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--deep-green);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(183, 240, 74, 0.3);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .desktop-nav li a {
            display: block;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            border-radius: 6px;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast), color var(--transition-fast);
            position: relative;
        }

        .desktop-nav li a:hover {
            background: rgba(183, 240, 74, 0.12);
            color: var(--lime-green);
        }

        .desktop-nav li a.active {
            color: #fff;
            background: rgba(183, 240, 74, 0.10);
        }

        .desktop-nav li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--lime-green);
            border-radius: 2px;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }
        }

        @media (max-width: 1023px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .site-header .container {
                justify-content: center;
            }
            .desktop-nav {
                display: none;
            }
        }

        /* ========== BOTTOM MOBILE NAV ========== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: var(--deep-green);
            border-top: 1px solid rgba(183, 240, 74, 0.18);
            height: calc(var(--bottom-nav-height) + var(--safe-bottom));
            padding-bottom: var(--safe-bottom);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
        }

        .mobile-bottom-nav ul {
            display: flex;
            align-items: stretch;
            justify-content: space-around;
            list-style: none;
            margin: 0;
            padding: 0;
            height: var(--bottom-nav-height);
        }

        .mobile-bottom-nav li {
            flex: 1;
            min-width: 0;
        }

        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            height: 100%;
            font-size: 0.72rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast), background var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .mobile-bottom-nav a i {
            font-size: 1.15rem;
            line-height: 1;
        }

        .mobile-bottom-nav a:hover {
            color: var(--lime-green);
        }

        .mobile-bottom-nav a.active {
            color: var(--lime-green);
            background: rgba(183, 240, 74, 0.08);
        }

        @media (max-width: 1023px) {
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: calc(84px + var(--safe-bottom));
            }
        }

        @media (min-width: 1024px) {
            body {
                padding-bottom: 0;
            }
        }

        /* ========== BREADCRUMB / PAGE HERO ========== */
        .page-hero {
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 72px 0 56px;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 25, 0.93) 0%, rgba(13, 36, 28, 0.88) 55%, rgba(11, 31, 25, 0.75) 100%);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            bottom: -60px;
            width: 340px;
            height: 340px;
            border: 2px solid rgba(183, 240, 74, 0.25);
            border-radius: 50%;
            z-index: 1;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--lime-green);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .page-hero h1 {
            font-family: var(--font-title);
            font-size: clamp(2rem, 5vw, 3.25rem);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: 0.02em;
            margin: 0 0 18px;
            color: #fff;
        }

        .page-hero h1 .highlight {
            color: var(--lime-green);
            position: relative;
        }

        .page-hero .hero-desc {
            font-size: 1.05rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0;
        }

        .page-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .page-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .page-hero .hero-meta i {
            color: var(--lime-green);
            font-size: 0.9rem;
        }

        @media (max-width: 640px) {
            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-desc {
                font-size: 0.95rem;
            }
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            background: #fff;
            border-bottom: 1px solid var(--light-border);
            padding: 14px 0;
            box-shadow: 0 2px 10px rgba(11, 31, 25, 0.04);
            position: relative;
            z-index: 5;
        }

        .filter-bar .container {
            display: flex;
            align-items: center;
            gap: 10px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            padding-top: 4px;
            padding-bottom: 4px;
        }

        .filter-bar .filter-tag {
            flex-shrink: 0;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--warm-white);
            color: var(--muted-text);
            border: 1px solid var(--light-border);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .filter-bar .filter-tag:hover {
            border-color: var(--lime-green);
            color: var(--deep-green);
            background: var(--pale-green-bg);
        }

        .filter-bar .filter-tag.active {
            background: var(--deep-green);
            color: #fff;
            border-color: var(--deep-green);
            box-shadow: 0 4px 12px rgba(11, 31, 25, 0.2);
        }

        .filter-bar .filter-label {
            flex-shrink: 0;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--soft-gray);
            letter-spacing: 0.03em;
            margin-right: 4px;
        }

        /* ========== FEATURES SECTION ========== */
        .features-section {
            padding: 72px 0;
            background: var(--warm-white);
        }

        .section-heading {
            margin-bottom: 40px;
            max-width: 720px;
        }

        .section-heading h2 {
            font-family: var(--font-title);
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--deep-green);
            margin: 0 0 12px;
        }

        .section-heading p {
            font-size: 1.02rem;
            color: var(--muted-text);
            line-height: 1.8;
            margin: 0;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-mid), transform var(--transition-mid), border-color var(--transition-fast);
            border: 1px solid var(--light-border);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--lime-green);
        }

        .feature-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--pale-green-bg);
        }

        .feature-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-mid);
        }

        .feature-card:hover .card-cover img {
            transform: scale(1.04);
        }

        .feature-card .card-cover .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(11, 31, 25, 0.82);
            color: var(--lime-green);
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
        }

        .feature-card .card-body {
            padding: 22px 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-card .card-body h3 {
            font-family: var(--font-title);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 0 0 10px;
            line-height: 1.35;
        }

        .feature-card .card-body p {
            font-size: 0.92rem;
            color: var(--muted-text);
            line-height: 1.75;
            margin: 0 0 14px;
            flex: 1;
        }

        .feature-card .card-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent-orange);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }

        .feature-card .card-link i {
            font-size: 0.72rem;
            transition: transform var(--transition-fast);
        }

        .feature-card .card-link:hover {
            color: var(--deep-green);
            gap: 10px;
        }

        .feature-card .card-link:hover i {
            transform: translateX(3px);
        }

        @media (max-width: 1023px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 640px) {
            .features-section {
                padding: 48px 0;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card .card-body {
                padding: 18px 16px 16px;
            }
        }

        /* ========== USE CASES SECTION ========== */
        .use-cases-section {
            padding: 72px 0 80px;
            background: #fff;
            border-top: 1px solid var(--light-border);
            border-bottom: 1px solid var(--light-border);
        }

        .use-cases-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
            align-items: start;
        }

        .use-cases-left .section-heading {
            margin-bottom: 20px;
        }

        .use-cases-left .scene-note {
            font-size: 0.95rem;
            color: var(--muted-text);
            line-height: 1.8;
            background: var(--pale-green-bg);
            border-left: 4px solid var(--lime-green);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        .scene-cards {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .scene-card {
            background: var(--warm-white);
            border-radius: var(--radius-md);
            padding: 22px 24px 22px 20px;
            border: 1px solid var(--light-border);
            border-left: 5px solid var(--lime-green);
            transition: box-shadow var(--transition-mid), border-color var(--transition-fast);
            position: relative;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-card);
            border-left-color: var(--accent-orange);
        }

        .scene-card h3 {
            font-family: var(--font-title);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 0 0 8px;
        }

        .scene-card p {
            font-size: 0.92rem;
            color: var(--muted-text);
            line-height: 1.75;
            margin: 0;
        }

        @media (max-width: 1023px) {
            .use-cases-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            .use-cases-section {
                padding: 48px 0;
            }
            .scene-card {
                padding: 16px 16px 16px 14px;
            }
        }

        /* ========== HOW IT WORKS SECTION ========== */
        .how-section {
            padding: 72px 0;
            background: var(--warm-white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 36px;
        }

        .step-card {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
            transition: box-shadow var(--transition-mid), transform var(--transition-mid);
            position: relative;
        }

        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--deep-green) 0%, var(--mid-green) 100%);
            color: var(--lime-green);
            font-family: var(--font-mono);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            box-shadow: 0 6px 16px rgba(11, 31, 25, 0.2);
        }

        .step-card h3 {
            font-family: var(--font-title);
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 0 0 10px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--muted-text);
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 1023px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .how-section {
                padding: 48px 0;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== DEEP CONTENT SECTION ========== */
        .deep-content-section {
            padding: 72px 0;
            background: linear-gradient(180deg, #fff 0%, var(--pale-green-bg) 100%);
            border-top: 1px solid var(--light-border);
        }

        .deep-content-wrapper {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 40px;
            align-items: start;
        }

        .deep-content-main h2 {
            font-family: var(--font-title);
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--deep-green);
            margin: 0 0 20px;
            line-height: 1.3;
        }

        .deep-content-main h3 {
            font-family: var(--font-title);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 24px 0 10px;
        }

        .deep-content-main p {
            font-size: 0.98rem;
            color: var(--muted-text);
            line-height: 1.9;
            margin: 0 0 14px;
        }

        .deep-content-side {
            background: var(--card-white);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
        }

        .deep-content-side h3 {
            font-family: var(--font-title);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--deep-green);
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .deep-content-side h3 i {
            color: var(--lime-dark);
        }

        .data-point-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .data-point-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 12px 0;
            border-bottom: 1px solid var(--light-border);
            font-size: 0.9rem;
            color: var(--muted-text);
            line-height: 1.6;
        }

        .data-point-list li:last-child {
            border-bottom: none;
        }

        .data-point-list li i {
            color: var(--lime-dark);
            font-size: 0.85rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        @media (max-width: 1023px) {
            .deep-content-wrapper {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            .deep-content-section {
                padding: 48px 0;
            }
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: 72px 0 80px;
            background: #fff;
            border-top: 1px solid var(--light-border);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--light-border);
            margin-bottom: 6px;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 8px;
            cursor: pointer;
            transition: background var(--transition-fast);
            border-radius: var(--radius-sm);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--pale-green-bg);
        }

        .faq-question .faq-index {
            font-family: var(--font-mono);
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--deep-green);
            background: var(--pale-green-bg);
            border: 1px solid var(--light-border);
            border-radius: 6px;
            padding: 4px 10px;
            flex-shrink: 0;
        }

        .faq-question h3 {
            flex: 1;
            font-size: 1rem;
            font-weight: 600;
            color: var(--warm-black);
            margin: 0;
            line-height: 1.5;
        }

        .faq-question .faq-arrow {
            color: var(--soft-gray);
            font-size: 0.85rem;
            transition: transform var(--transition-mid);
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--lime-dark);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-mid);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 8px 20px 54px;
            font-size: 0.93rem;
            color: var(--muted-text);
            line-height: 1.8;
        }

        @media (max-width: 640px) {
            .faq-section {
                padding: 48px 0;
            }
            .faq-answer-inner {
                padding-left: 0;
                padding-right: 0;
            }
            .faq-question {
                padding: 14px 4px;
                gap: 10px;
            }
            .faq-question .faq-index {
                font-size: 0.78rem;
                padding: 3px 8px;
            }
            .faq-question h3 {
                font-size: 0.92rem;
            }
        }

        /* ========== FINAL CTA ========== */
        .final-cta {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0;
            color: #fff;
            text-align: center;
        }

        .final-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 25, 0.95) 0%, rgba(13, 36, 28, 0.92) 100%);
            z-index: 1;
        }

        .final-cta .container {
            position: relative;
            z-index: 2;
        }

        .final-cta h2 {
            font-family: var(--font-title);
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 900;
            margin: 0 0 14px;
            color: #fff;
        }

        .final-cta p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.98rem;
            font-weight: 600;
            background: var(--deep-green);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }

        .btn-primary:hover {
            background: var(--lime-green);
            color: var(--deep-green);
            box-shadow: 0 6px 20px rgba(183, 240, 74, 0.3);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.98rem;
            font-weight: 600;
            background: transparent;
            color: var(--accent-orange);
            border: 2px solid var(--accent-orange);
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            background: var(--accent-orange);
            color: #fff;
            box-shadow: 0 6px 20px rgba(255, 78, 45, 0.3);
        }

        @media (max-width: 640px) {
            .final-cta {
                padding: 56px 0;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--deep-green);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
        }

        .site-footer .container {
            max-width: 1280px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.2fr 1.2fr 1.2fr 1.4fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
            max-width: 300px;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .footer-col ul li a:hover {
            color: var(--lime-green);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom .footer-legal {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: var(--lime-green);
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-bottom .footer-legal {
                justify-content: center;
            }
        }

        @media (max-width: 640px) {
            .site-footer {
                padding: 40px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

/* roulang page: category4 */
:root {
            --deep-green: #0B1F19;
            --dark-pine: #0D241C;
            --mid-green: #16382C;
            --lime-green: #B7F04A;
            --lime-dark: #9DD33A;
            --accent-orange: #FF4E2D;
            --accent-orange-hover: #E63E1F;
            --warm-black: #1C1C1A;
            --warm-white: #F4F2EC;
            --card-white: #FFFFFF;
            --soft-gray: #6B7470;
            --muted-text: #4C5A53;
            --light-border: #E4E2DB;
            --pale-green-bg: #EFF7E2;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(11, 31, 25, 0.10);
            --shadow-card-hover: 0 16px 40px rgba(11, 31, 25, 0.16);
            --shadow-dark: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-title: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'Source Han Sans CN', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-mono: 'DIN Alternate', 'Roboto Condensed', 'Arial Narrow', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-mid: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height-desktop: 72px;
            --nav-height-mobile: 60px;
            --bottom-nav-height: 64px;
            --safe-bottom: env(safe-area-inset-bottom, 0px);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            color: var(--warm-black);
            background-color: var(--warm-white);
            padding-bottom: 84px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            -webkit-tap-highlight-color: transparent;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(183, 240, 74, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-title);
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 16px;
            color: var(--warm-black);
        }

        h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 900; letter-spacing: -0.01em; }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; }
        h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 700; }
        h4 { font-size: 1.1rem; font-weight: 700; }
        p { margin: 0 0 16px; }

        ul, ol {
            margin: 0 0 16px;
            padding-left: 1.2em;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: linear-gradient(135deg, var(--deep-green) 0%, #0A1A15 100%);
            color: var(--warm-white);
            position: sticky;
            top: 0;
            z-index: 200;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
            height: var(--nav-height-desktop);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-weight: 900;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
            line-height: 1;
            transition: opacity var(--transition-fast);
        }
        .brand-logo:hover { opacity: 0.88; color: #fff; }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--lime-green) 0%, #8ABC34 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--deep-green);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(183, 240, 74, 0.3);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .desktop-nav li a {
            display: block;
            padding: 10px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            border-radius: 6px;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast), color var(--transition-fast);
            position: relative;
        }
        .desktop-nav li a:hover {
            background: rgba(183, 240, 74, 0.12);
            color: var(--lime-green);
        }
        .desktop-nav li a.active {
            color: #fff;
            background: rgba(183, 240, 74, 0.10);
        }
        .desktop-nav li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--lime-green);
            border-radius: 2px;
        }

        /* ========== BOTTOM MOBILE NAV ========== */
        .bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: var(--deep-green);
            border-top: 1px solid rgba(183, 240, 74, 0.2);
            height: calc(var(--bottom-nav-height) + var(--safe-bottom));
            padding-bottom: var(--safe-bottom);
            box-shadow: 0 -4px 20px rgba(0,0,0,0.25);
        }
        .bottom-nav ul {
            display: flex;
            align-items: stretch;
            justify-content: space-between;
            list-style: none;
            margin: 0;
            padding: 0;
            height: calc(100% - var(--safe-bottom));
        }
        .bottom-nav ul li {
            flex: 1;
            display: flex;
        }
        .bottom-nav ul li a {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 0.7rem;
            color: rgba(255,255,255,0.55);
            padding: 6px 2px;
            transition: color var(--transition-fast), background var(--transition-fast);
            border-radius: 8px;
            margin: 3px 2px;
        }
        .bottom-nav ul li a i {
            font-size: 1.2rem;
            line-height: 1;
        }
        .bottom-nav ul li a.active,
        .bottom-nav ul li a:hover {
            color: var(--lime-green);
            background: rgba(183,240,74,0.10);
        }
        .bottom-nav ul li a.active i,
        .bottom-nav ul li a:hover i {
            color: var(--lime-green);
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            background: linear-gradient(160deg, var(--deep-green) 0%, #0F2B20 45%, #16382C 100%);
            color: #fff;
            overflow: hidden;
            padding: 56px 0 72px;
            isolation: isolate;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: -2;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11,31,25,0.65) 0%, rgba(11,31,25,0.35) 100%);
            z-index: -1;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a {
            color: rgba(255,255,255,0.75);
            transition: color var(--transition-fast);
        }
        .page-hero .breadcrumb a:hover { color: var(--lime-green); }
        .page-hero .breadcrumb i { font-size: 0.65rem; color: rgba(255,255,255,0.4); }
        .page-hero h1 {
            color: #fff;
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 900;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            max-width: 800px;
        }
        .page-hero .hero-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.78);
            max-width: 680px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all var(--transition-mid);
            letter-spacing: 0.01em;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--lime-green);
            color: var(--deep-green);
            box-shadow: 0 6px 18px rgba(183,240,74,0.35);
        }
        .btn-primary:hover {
            background: var(--lime-dark);
            color: var(--deep-green);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(183,240,74,0.4);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.4);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--lime-green);
            color: var(--lime-green);
            transform: translateY(-2px);
        }
        .btn-orange {
            background: var(--accent-orange);
            color: #fff;
            box-shadow: 0 6px 18px rgba(255,78,45,0.3);
        }
        .btn-orange:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(255,78,45,0.38);
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        /* ========== SECTION SHARED ========== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-dark {
            background: var(--deep-green);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3 { color: #fff; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }
        .section-label.lime { color: var(--lime-green); }
        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--muted-text);
            max-width: 720px;
            margin-bottom: 40px;
            line-height: 1.75;
        }
        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.7);
        }
        .section-head {
            margin-bottom: 44px;
        }

        /* ========== HERO WHITE PAPER STYLE ========== */
        .whitepaper-hero {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .whitepaper-cover {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 28px;
            box-shadow: var(--shadow-dark);
            position: relative;
            overflow: hidden;
        }
        .whitepaper-cover::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--lime-green) 0%, #d4f88a 50%, var(--lime-green) 100%);
        }
        .whitepaper-cover .wp-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--pale-green-bg);
            color: var(--mid-green);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .whitepaper-cover h3 {
            color: var(--warm-black);
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .whitepaper-cover .wp-sub {
            color: var(--muted-text);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .wp-toc {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .wp-toc li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--light-border);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--warm-black);
        }
        .wp-toc li:last-child { border-bottom: none; }
        .wp-toc li .wp-num {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--deep-green);
            color: var(--lime-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 800;
            font-family: var(--font-mono);
        }
        .wp-toc li span {
            line-height: 1.5;
        }
        .wp-form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--warm-black);
            margin-bottom: 6px;
        }
        .wp-form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--light-border);
            border-radius: var(--radius-sm);
            background: #fafafa;
            font-size: 0.92rem;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            margin-bottom: 14px;
        }
        .wp-form-input:focus {
            outline: none;
            border-color: var(--lime-dark);
            box-shadow: 0 0 0 3px rgba(183,240,74,0.25);
        }
        .wp-form-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
        }
        .wp-form-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .wp-form-note {
            font-size: 0.75rem;
            color: var(--soft-gray);
            margin-top: 8px;
        }

        /* ========== FEATURE / HELP BLOCKS ========== */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .help-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
            transition: all var(--transition-mid);
            position: relative;
            overflow: hidden;
        }
        .help-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--lime-green);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        .help-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--lime-green);
        }
        .help-card:hover::before {
            opacity: 1;
        }
        .help-card .hc-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--deep-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--lime-green);
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .help-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .help-card p {
            font-size: 0.92rem;
            color: var(--muted-text);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .help-card .hc-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--accent-orange);
            margin-top: 14px;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .help-card .hc-link:hover {
            color: var(--deep-green);
            gap: 8px;
        }

        /* ========== SAFETY TIMELINE ========== */
        .safety-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--light-border);
            position: relative;
            transition: all var(--transition-mid);
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--lime-green);
            margin-bottom: 8px;
            line-height: 1;
        }
        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--muted-text);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* ========== FAQ ========== */
        .faq-accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-accordion li {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--light-border);
            box-shadow: 0 2px 12px rgba(11,31,25,0.05);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-accordion li.open {
            border-color: var(--lime-dark);
            box-shadow: 0 6px 24px rgba(11,31,25,0.10);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            width: 100%;
            padding: 20px 22px;
            text-align: left;
            font-family: var(--font-title);
            font-size: 1rem;
            font-weight: 700;
            color: var(--warm-black);
            background: #fff;
            transition: background var(--transition-fast);
            cursor: pointer;
        }
        .faq-question:hover {
            background: var(--pale-green-bg);
        }
        .faq-question .faq-q-left {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
            min-width: 0;
        }
        .faq-question .faq-index {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 6px;
            background: var(--deep-green);
            color: var(--lime-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 0.8rem;
            font-weight: 800;
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            color: var(--soft-gray);
            transition: transform var(--transition-mid);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .faq-question[aria-expanded="true"] .faq-arrow {
            transform: rotate(180deg);
            color: var(--lime-dark);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 22px;
            color: var(--muted-text);
            font-size: 0.92rem;
            line-height: 1.75;
        }
        .faq-answer p {
            margin: 0;
            padding-bottom: 20px;
        }
        .faq-accordion li.open .faq-answer {
            max-height: 300px;
            padding-top: 6px;
        }

        /* ========== CTA ========== */
        .final-cta {
            background: linear-gradient(160deg, var(--deep-green) 0%, #0F2B20 50%, #1B4A38 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
            isolation: isolate;
        }
        .final-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: -2;
        }
        .final-cta::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,31,25,0.9) 0%, rgba(11,31,25,0.7) 100%);
            z-index: -1;
        }
        .final-cta .container {
            text-align: center;
            max-width: 720px;
        }
        .final-cta h2 {
            color: #fff;
            font-size: clamp(1.7rem, 3.5vw, 2.5rem);
            font-weight: 900;
            margin-bottom: 14px;
        }
        .final-cta p {
            color: rgba(255,255,255,0.75);
            font-size: 1.02rem;
            margin-bottom: 28px;
            line-height: 1.75;
        }
        .final-cta .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--deep-green);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(183,240,74,0.15);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--lime-green);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .footer-legal a {
            color: rgba(255,255,255,0.5);
            transition: color var(--transition-fast);
        }
        .footer-legal a:hover {
            color: var(--lime-green);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .whitepaper-hero {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .safety-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .help-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .desktop-nav {
                display: none;
            }
            .bottom-nav {
                display: block;
            }
            body {
                padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 20px);
            }
            .section {
                padding: 52px 0;
            }
            .page-hero {
                padding: 40px 0 52px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .whitepaper-hero {
                gap: 24px;
            }
            .help-grid,
            .safety-timeline {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .final-cta {
                padding: 56px 0;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .wp-form-actions {
                flex-direction: column;
            }
            .wp-form-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .btn-lg {
                padding: 14px 20px;
                font-size: 0.95rem;
            }
            .whitepaper-cover {
                padding: 20px;
            }
            .faq-question {
                padding: 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-answer p {
                padding-bottom: 14px;
            }
        }