/* roulang page: index */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0,0,0,.06);
            --shadow-card-hover: 0 16px 40px rgba(0,0,0,.12);
            --shadow-focus: 0 0 0 3px rgba(31,106,58,.25);
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background-color: var(--surface);
        }

        .section-dark {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
        }

        .font-num {
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", "Roboto Condensed", system-ui, sans-serif;
            font-weight: 700;
            letter-spacing: .02em;
        }

        .heading-xl {
            font-size: clamp(40px, 5.5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.01em;
        }

        .heading-lg {
            font-size: clamp(28px, 3.5vw, 36px);
            font-weight: 600;
            line-height: 1.25;
        }

        .heading-md {
            font-size: clamp(20px, 2.5vw, 24px);
            font-weight: 600;
            line-height: 1.3;
        }

        .text-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .text-secondary {
            color: var(--text-secondary);
        }

        .text-on-dark-secondary {
            color: rgba(245, 247, 242, .72);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-tag);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
            background-color: rgba(31, 106, 58, .08);
            color: var(--primary);
            white-space: nowrap;
        }

        .tag-accent {
            background-color: rgba(212, 243, 74, .18);
            color: #87a622;
        }

        .tag-danger {
            background-color: rgba(248, 92, 58, .1);
            color: var(--danger);
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            overflow: hidden;
        }

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

        .card-dark {
            background: rgba(255, 255, 255, .04);
            border-color: rgba(255, 255, 255, .08);
            color: var(--text-on-dark);
        }

        .card-dark:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 40px rgba(0,0,0,.35);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border: 1px solid var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-focus);
        }

        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            border: 1px solid var(--accent);
        }

        .btn-accent:hover {
            background-color: #c0e22e;
            border-color: #c0e22e;
            box-shadow: var(--shadow-focus);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background-color: rgba(31, 106, 58, .06);
            border-color: var(--primary-dark);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(245, 247, 242, .4);
        }

        .btn-outline-light:hover {
            background-color: rgba(245, 247, 242, .1);
            border-color: var(--text-on-dark);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 12px;
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        .input-field {
            height: 44px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--surface);
            padding: 0 16px;
            font-size: 15px;
            color: var(--text);
            transition: border-color .2s ease, box-shadow .2s ease;
            width: 100%;
        }

        .input-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31, 106, 58, .15);
            outline: none;
        }

        .input-field::placeholder {
            color: #9aa89f;
        }

        .form-error {
            color: var(--danger);
            font-size: 13px;
            margin-top: 6px;
            display: none;
        }

        .form-success {
            color: var(--primary);
            font-size: 14px;
            margin-top: 6px;
            display: none;
        }

        .nav-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 22px;
            letter-spacing: .06em;
            color: var(--primary-dark);
            white-space: nowrap;
        }

        .nav-logo span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color .2s ease, background-color .2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .06);
        }

        .nav-link.active {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .1);
            font-weight: 600;
        }

        .nav-cta {
            margin-left: 8px;
        }

        .progress-nav {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 8px 0;
        }

        .progress-steps {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 48px;
        }

        .progress-step {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all .2s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .progress-step:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .progress-step.active {
            background: var(--primary);
            color: var(--text-on-dark);
            border-color: var(--primary);
            font-weight: 600;
        }

        .progress-step .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(31, 106, 58, .12);
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .progress-step.active .step-num {
            background: rgba(255, 255, 255, .2);
            color: #fff;
        }

        .progress-divider {
            flex: 0 0 auto;
            width: 20px;
            height: 2px;
            background: var(--border);
            border-radius: 1px;
        }

        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--surface-dark);
            background-image: url('/assets/images/f0a7005eab1c806b.webp');
            background-size: cover;
            background-position: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 18, .82) 0%, rgba(17, 24, 16, .72) 55%, rgba(15, 23, 18, .88) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 20% 60%, rgba(212, 243, 74, .08) 0%, transparent 45%),
                              radial-gradient(circle at 85% 30%, rgba(31, 106, 58, .3) 0%, transparent 50%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            padding: 60px 0;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 243, 74, .14);
            border: 1px solid rgba(212, 243, 74, .3);
            color: var(--accent);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            font-size: clamp(36px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-on-dark);
            margin-bottom: 18px;
            letter-spacing: -.01em;
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.85;
            color: rgba(245, 247, 242, .8);
            margin-bottom: 28px;
            max-width: 680px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .countdown-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 12px;
            padding: 14px 20px;
            max-width: 480px;
        }

        .countdown-label {
            font-size: 13px;
            color: rgba(245, 247, 242, .7);
            white-space: nowrap;
        }

        .countdown-display {
            display: flex;
            gap: 8px;
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", system-ui, sans-serif;
            font-weight: 700;
            font-size: 24px;
            color: var(--accent);
            letter-spacing: .03em;
        }

        .countdown-unit {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .countdown-unit .num {
            font-size: 26px;
            line-height: 1;
        }

        .countdown-unit .label {
            font-size: 10px;
            font-weight: 400;
            color: rgba(245, 247, 242, .55);
            letter-spacing: .1em;
        }

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

        .kpi-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .kpi-number {
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", system-ui, sans-serif;
            font-size: 44px;
            font-weight: 800;
            line-height: 1.1;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: .02em;
        }

        .kpi-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .feature-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .feature-block {
            padding: 40px 36px;
            border-bottom: 1px solid var(--border);
            border-right: 1px solid var(--border);
            background: var(--surface);
            transition: background-color .25s ease;
        }

        .feature-block:hover {
            background: rgba(31, 106, 58, .03);
        }

        .feature-block:nth-child(2n) {
            border-right: none;
        }

        .feature-block:nth-last-child(-n+2) {
            border-bottom: none;
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(31, 106, 58, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 22px;
            color: var(--primary);
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scene-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 220px;
            background-size: cover;
            background-position: center;
            cursor: pointer;
        }

        .scene-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 18, .1) 0%, rgba(15, 23, 18, .82) 100%);
            z-index: 1;
            transition: background .3s ease;
        }

        .scene-card:hover::before {
            background: linear-gradient(180deg, rgba(15, 23, 18, .05) 0%, rgba(15, 23, 18, .9) 100%);
        }

        .scene-card-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2;
            padding: 20px 22px;
            color: #fff;
        }

        .scene-card-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .scene-card-content p {
            font-size: 13px;
            color: rgba(245, 247, 242, .75);
            line-height: 1.5;
        }

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

        .case-card {
            padding: 28px 24px;
        }

        .case-metric {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", system-ui, sans-serif;
            margin-bottom: 10px;
            line-height: 1.1;
        }

        .case-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .case-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .brand-intro {
            background: var(--surface);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 44px 40px;
            border-left: 5px solid var(--primary);
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }

        .price-card {
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .price-card.recommended {
            border-color: var(--primary);
            box-shadow: 0 16px 48px rgba(31, 106, 58, .18);
        }

        .price-recommend-tag {
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 999px;
        }

        .price-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .price-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", system-ui, sans-serif;
            margin-bottom: 16px;
        }

        .price-value .unit {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-secondary);
        }

        .price-features {
            list-style: none;
            margin-bottom: 24px;
            flex: 1;
        }

        .price-features li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(229, 235, 226, .6);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-features li::before {
            content: '✓';
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .testimonial-card {
            padding: 20px 18px;
            font-size: 14px;
            line-height: 1.6;
        }

        .testimonial-author {
            margin-top: 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        .media-quote {
            padding: 36px 32px;
            border-radius: var(--radius-card);
            background: var(--surface);
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--accent);
        }

        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 22px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: all .2s ease;
        }

        .news-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }

        .news-date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", system-ui, sans-serif;
        }

        .news-date .day {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }

        .news-date .month {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .category-entry-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 16px;
        }

        .category-entry-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 160px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
        }

        .category-entry-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 18, .05) 0%, rgba(15, 23, 18, .8) 100%);
            z-index: 1;
        }

        .category-entry-card .cat-label {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 20px;
            font-size: 17px;
            font-weight: 600;
        }

        .security-block {
            padding: 40px 36px;
            border-radius: var(--radius-card);
            background: var(--surface);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--surface);
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item:hover {
            border-color: var(--primary);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
        }

        .faq-question::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .subscribe-box {
            background: var(--surface-dark);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            color: var(--text-on-dark);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-section {
            background: var(--surface-dark);
            color: var(--text-on-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 70% 50%, rgba(212, 243, 74, .1) 0%, transparent 50%),
                              radial-gradient(circle at 20% 80%, rgba(31, 106, 58, .35) 0%, transparent 45%);
            pointer-events: none;
        }

        .footer {
            background: var(--primary-dark);
            color: rgba(245, 247, 242, .75);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer h4 {
            color: var(--text-on-dark);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer a {
            color: rgba(245, 247, 242, .65);
            display: block;
            padding: 5px 0;
            font-size: 14px;
            transition: color .2s ease;
        }

        .footer a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(245, 247, 242, .1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            font-size: 13px;
            color: rgba(245, 247, 242, .5);
        }

        .footer-bottom a {
            color: rgba(245, 247, 242, .6);
            display: inline;
            padding: 0;
        }

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

        .hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 6px;
            border: 1px solid var(--border);
            background: var(--surface);
        }

        .hamburger-btn span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 1px;
            transition: all .25s ease;
        }

        .mobile-menu {
            display: none;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 12px 20px;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 14px;
            font-size: 15px;
            border-radius: 8px;
        }

        @media (max-width: 1024px) {
            .section {
                padding: 60px 0;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .category-entry-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-group {
                grid-template-columns: 1fr;
            }
            .feature-block {
                border-right: none;
            }
            .feature-block:nth-last-child(-n+2) {
                border-bottom: 1px solid var(--border);
            }
            .feature-block:last-child {
                border-bottom: none;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 44px 0;
            }
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .mobile-menu.open {
                display: block;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .case-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .price-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .subscribe-box {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 36px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero {
                min-height: 560px;
            }
            .hero-content {
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .countdown-display {
                font-size: 20px;
            }
            .countdown-unit .num {
                font-size: 20px;
            }
            .progress-steps {
                overflow-x: auto;
                gap: 6px;
                -webkit-overflow-scrolling: touch;
            }
            .progress-divider {
                display: none;
            }
            .progress-step {
                flex-shrink: 0;
                font-size: 12px;
                padding: 5px 12px;
            }
            .brand-intro {
                padding: 32px 24px;
            }
            .security-block {
                padding: 28px 22px;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
            }
            .category-entry-card {
                min-height: 120px;
            }
            .feature-block {
                padding: 28px 22px;
            }
        }

        @media (max-width: 520px) {
            .kpi-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .kpi-number {
                font-size: 34px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px;
            }
            .news-date {
                width: auto;
                text-align: left;
                display: flex;
                gap: 6px;
                align-items: baseline;
            }
            .price-card {
                padding: 28px 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0,0,0,.06);
            --shadow-card-hover: 0 16px 40px rgba(0,0,0,.12);
            --shadow-focus: 0 0 0 3px rgba(31,106,58,.25);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background-color: var(--surface);
        }
        .section-dark {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
        }
        .heading-xl {
            font-size: clamp(40px, 5.5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.01em;
        }
        .heading-lg {
            font-size: clamp(28px, 3.5vw, 36px);
            font-weight: 600;
            line-height: 1.25;
        }
        .heading-md {
            font-size: clamp(20px, 2.5vw, 24px);
            font-weight: 600;
            line-height: 1.3;
        }
        .text-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-on-dark-secondary {
            color: rgba(245, 247, 242, .72);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-tag);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
            background-color: rgba(31, 106, 58, .08);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-accent {
            background-color: rgba(212, 243, 74, .18);
            color: #87a622;
        }
        .tag-danger {
            background-color: rgba(248, 92, 58, .1);
            color: var(--danger);
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .card-dark {
            background: rgba(255, 255, 255, .04);
            border-color: rgba(255, 255, 255, .08);
            color: var(--text-on-dark);
        }
        .card-dark:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 40px rgba(0,0,0,.35);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn:active {
            transform: scale(.98);
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-focus);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover {
            background-color: #c0e22e;
            border-color: #c0e22e;
            box-shadow: var(--shadow-focus);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(31, 106, 58, .06);
            border-color: var(--primary-dark);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(245, 247, 242, .4);
        }
        .btn-outline-light:hover {
            background-color: rgba(245, 247, 242, .1);
            border-color: var(--text-on-dark);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 12px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 18px 0;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #b4c2b8;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        .category-hero {
            background-color: var(--surface-dark);
            background-image: linear-gradient(rgba(17,24,16,.82), rgba(17,24,16,.92)), url('/assets/images/e49114c076f9bccd.webp');
            background-size: cover;
            background-position: center;
            border-radius: 20px;
            padding: 48px 40px;
            min-height: 260px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            color: var(--text-on-dark);
            position: relative;
            overflow: hidden;
            margin-bottom: 48px;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            right: 40px;
            bottom: 30px;
            width: 140px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            opacity: .9;
        }
        .category-hero h1 {
            font-size: clamp(32px, 4.5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .category-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(245,247,242,.78);
            max-width: 760px;
        }
        .filter-bar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            box-shadow: 0 4px 18px rgba(0,0,0,.04);
            margin-bottom: 32px;
        }
        .filter-bar label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .filter-bar select {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 14px;
            font-size: 14px;
            background-color: var(--surface);
            color: var(--text);
            min-width: 140px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .filter-bar select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31,106,58,.15);
            outline: none;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            background-color: #F4F6F0;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all .2s ease;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: rgba(31,106,58,.05);
        }
        .filter-chip.active {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border-color: var(--primary);
        }
        .timeline-container {
            position: relative;
            padding-left: 28px;
        }
        .timeline-container::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--border);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 16px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 22px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--surface);
            box-shadow: 0 0 0 2px var(--primary);
        }
        .match-card-horizontal {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 18px 22px;
            transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
            cursor: default;
        }
        .match-card-horizontal:hover {
            border-color: var(--primary);
            box-shadow: 0 12px 28px rgba(0,0,0,.08);
            transform: translateY(-2px);
        }
        .match-time {
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 76px;
            text-align: center;
        }
        .match-time .time {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", sans-serif;
            line-height: 1.2;
        }
        .match-time .period {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 2px;
        }
        .match-teams {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .match-team-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .match-team-row .team-name {
            font-weight: 500;
            font-size: 15px;
        }
        .match-team-row .score {
            font-size: 18px;
            font-weight: 700;
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", sans-serif;
            min-width: 32px;
            text-align: center;
        }
        .match-team-row .score.live {
            color: var(--danger);
        }
        .league-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #F4F6F0;
            border-radius: 6px;
            padding: 2px 10px;
            white-space: nowrap;
        }
        .score-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 16px;
        }
        .stat-metric {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px 22px;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }
        .stat-metric:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
            border-color: var(--primary);
        }
        .stat-metric .metric-value {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            font-family: "DIN Alternate", "Barlow Condensed", "Oswald", sans-serif;
            line-height: 1.1;
        }
        .stat-metric .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .data-note {
            background: rgba(31,106,58,.05);
            border-left: 4px solid var(--primary);
            border-radius: 8px;
            padding: 18px 22px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }
        .subscribe-bar {
            background: var(--surface-dark);
            border-radius: 18px;
            padding: 36px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            color: var(--text-on-dark);
        }
        .subscribe-bar h3 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 6px;
        }
        .subscribe-bar p {
            color: rgba(245,247,242,.7);
            font-size: 15px;
        }
        .subscribe-input {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            flex: 1;
            min-width: 280px;
            max-width: 520px;
        }
        .subscribe-input input {
            flex: 1;
            min-width: 200px;
            border: 1px solid rgba(245,247,242,.3);
            background: rgba(255,255,255,.08);
            border-radius: 10px;
            padding: 12px 18px;
            color: var(--text-on-dark);
            font-size: 15px;
            transition: border-color .2s ease, background-color .2s ease;
        }
        .subscribe-input input::placeholder {
            color: rgba(245,247,242,.5);
        }
        .subscribe-input input:focus {
            outline: none;
            border-color: var(--accent);
            background: rgba(255,255,255,.12);
        }
        .header-sticky {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            font-size: 15px;
            font-weight: 500;
        }
        .nav-link {
            color: var(--text-secondary);
            padding: 6px 2px;
            position: relative;
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .progress-nav {
            background: var(--surface-dark);
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,.06);
        }
        .progress-steps {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .progress-step {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(245,247,242,.6);
            font-size: 13px;
            transition: color .2s ease;
        }
        .progress-step .step-num {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(255,255,255,.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 600;
            color: rgba(245,247,242,.7);
            transition: all .2s ease;
        }
        .progress-step.active {
            color: var(--accent);
        }
        .progress-step.active .step-num {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .progress-arrow {
            color: rgba(245,247,242,.3);
            font-size: 14px;
            margin: 0 4px;
        }
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--surface);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: background-color .2s ease;
        }
        .mobile-menu-btn span {
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all .25s ease;
        }
        .mobile-menu-btn.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .footer {
            background: var(--surface-dark);
            color: var(--text-on-dark);
            padding: 64px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-on-dark);
        }
        .footer a {
            display: block;
            color: rgba(245,247,242,.6);
            font-size: 14px;
            line-height: 2;
            transition: color .2s ease;
        }
        .footer a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 13px;
            color: rgba(245,247,242,.5);
        }
        .footer-bottom a {
            color: rgba(245,247,242,.5);
            transition: color .2s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }
            .category-hero {
                padding: 36px 28px;
                min-height: 220px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 40px rgba(0,0,0,.08);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 12px 0;
                font-size: 16px;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .progress-nav {
                display: none;
            }
            .category-hero {
                padding: 28px 20px;
                min-height: 200px;
                border-radius: 14px;
                margin-bottom: 28px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 14px;
            }
            .match-card-horizontal {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 18px;
            }
            .match-time {
                flex-direction: row;
                gap: 8px;
                min-width: auto;
            }
            .filter-bar {
                padding: 12px 16px;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 40px 0 24px;
            }
            .subscribe-bar {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-input {
                max-width: 100%;
            }
            .score-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                padding: 12px 0;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 40px 0;
            }
            .heading-xl {
                font-size: 34px;
            }
            .heading-lg {
                font-size: 24px;
            }
            .category-hero {
                padding: 20px 16px;
                min-height: 180px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-bar select {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, .06);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, .12);
            --shadow-focus: 0 0 0 3px rgba(31, 106, 58, .25);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background-color: var(--surface);
        }
        .section-dark {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
        }

        .heading-xl {
            font-size: clamp(38px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.01em;
        }
        .heading-lg {
            font-size: clamp(26px, 3.2vw, 34px);
            font-weight: 600;
            line-height: 1.28;
        }
        .heading-md {
            font-size: clamp(20px, 2.4vw, 24px);
            font-weight: 600;
            line-height: 1.32;
        }
        .text-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-on-dark-secondary {
            color: rgba(245, 247, 242, .72);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-tag);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
            background-color: rgba(31, 106, 58, .08);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-accent {
            background-color: rgba(212, 243, 74, .18);
            color: #87a622;
        }
        .tag-danger {
            background-color: rgba(248, 92, 58, .1);
            color: var(--danger);
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .card-dark {
            background: rgba(255, 255, 255, .04);
            border-color: rgba(255, 255, 255, .08);
            color: var(--text-on-dark);
        }
        .card-dark:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 40px rgba(0, 0, 0, .35);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn:active {
            transform: scale(.98);
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-focus);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover {
            background-color: #c0e22e;
            border-color: #c0e22e;
            box-shadow: var(--shadow-focus);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(31, 106, 58, .06);
            border-color: var(--primary-dark);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(245, 247, 242, .4);
        }
        .btn-outline-light:hover {
            background-color: rgba(245, 247, 242, .1);
            border-color: var(--text-on-dark);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 12px;
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, .96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--primary-dark);
            white-space: nowrap;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
            font-weight: 700;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color .2s ease, background-color .2s ease;
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .06);
        }
        .nav-link.active {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .08);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text);
            font-size: 20px;
        }
        .mobile-menu {
            display: none;
            padding: 12px 20px 20px;
            border-top: 1px solid var(--border);
            background-color: var(--surface);
        }
        .mobile-menu .nav-link {
            display: block;
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            border-bottom: 1px solid var(--border);
            border-radius: 0;
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }

        /* Progress Steps */
        .progress-steps {
            display: flex;
            align-items: center;
            gap: 0;
            height: 52px;
            background-color: var(--primary-dark);
            color: var(--text-on-dark);
            padding: 0 20px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .progress-steps-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(245, 247, 242, .55);
            white-space: nowrap;
            padding: 6px 12px;
            border-radius: 8px;
            transition: background-color .2s ease, color .2s ease;
            flex-shrink: 0;
        }
        .step-item:hover {
            background-color: rgba(245, 247, 242, .08);
            color: var(--text-on-dark);
        }
        .step-item.active {
            color: var(--accent);
            background-color: rgba(212, 243, 74, .12);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: rgba(245, 247, 242, .15);
            font-size: 12px;
            font-weight: 600;
            flex-shrink: 0;
        }
        .step-item.active .step-num {
            background-color: var(--accent);
            color: var(--primary-dark);
        }
        .step-divider {
            width: 1px;
            height: 20px;
            background-color: rgba(245, 247, 242, .2);
            flex-shrink: 0;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Category H1 Section */
        .category-header {
            background: linear-gradient(135deg, var(--surface-dark) 0%, #1a2a1e 100%);
            color: var(--text-on-dark);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .category-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                radial-gradient(circle at 20% 80%, rgba(212, 243, 74, .06) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(31, 106, 58, .3) 0%, transparent 55%);
            pointer-events: none;
        }
        .category-header .container {
            position: relative;
            z-index: 1;
        }
        .category-header h1 {
            font-size: clamp(32px, 4.5vw, 44px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .category-header p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(245, 247, 242, .75);
            max-width: 820px;
        }
        .category-header .crumb-light {
            color: rgba(245, 247, 242, .5);
        }
        .category-header .crumb-light a {
            color: rgba(245, 247, 242, .6);
        }
        .category-header .crumb-light a:hover {
            color: var(--accent);
        }
        .category-header .crumb-light .current {
            color: var(--accent);
        }
        .category-header .sep-light {
            color: rgba(245, 247, 242, .3);
        }

        /* Metric Cards */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            position: relative;
            overflow: hidden;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .metric-card .metric-num {
            font-family: "Barlow Condensed", "Oswald", "DIN Alternate", sans-serif;
            font-size: clamp(36px, 4vw, 48px);
            font-weight: 700;
            line-height: 1.1;
            color: var(--primary);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }
        .metric-card .metric-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }
        .metric-card .metric-desc {
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-secondary);
        }
        .metric-card .metric-indicator {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--accent);
            box-shadow: 0 0 10px rgba(212, 243, 74, .5);
        }

        /* Chart Placeholder */
        .chart-panel {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 12px;
            height: 180px;
            padding-top: 20px;
        }
        .chart-bar {
            flex: 1;
            background: linear-gradient(180deg, var(--primary) 0%, rgba(31, 106, 58, .5) 100%);
            border-radius: 6px 6px 0 0;
            min-width: 20px;
            transition: background-color .3s ease, transform .3s ease;
            position: relative;
        }
        .chart-bar:hover {
            background: linear-gradient(180deg, var(--accent) 0%, rgba(212, 243, 74, .6) 100%);
            transform: scaleY(1.03);
            transform-origin: bottom;
        }
        .chart-bar .bar-value {
            position: absolute;
            top: -28px;
            left: 50%;
            transform: translateX(-50%);
            font-family: "Barlow Condensed", "Oswald", sans-serif;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .chart-labels {
            display: flex;
            gap: 12px;
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-secondary);
        }
        .chart-label {
            flex: 1;
            text-align: center;
            white-space: nowrap;
            font-size: 11px;
        }
        .chart-trend {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .trend-up {
            color: var(--primary);
            font-weight: 600;
        }
        .trend-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--accent);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .4; transform: scale(1.5); }
        }

        /* Data Source / Methodology */
        .method-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .method-item {
            display: flex;
            gap: 12px;
            padding: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .method-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }
        .method-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            border-radius: 8px;
            background-color: rgba(31, 106, 58, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
        }
        .method-content h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .method-content p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag {
            font-size: 14px;
            padding: 6px 18px;
            background-color: var(--surface);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            cursor: default;
        }
        .tag-cloud .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: rgba(31, 106, 58, .04);
        }

        /* Report Cards */
        .report-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .report-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }
        .report-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .report-card .report-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }
        .report-card .report-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .report-card:hover .report-img img {
            transform: scale(1.04);
        }
        .report-card .report-body {
            padding: 20px;
        }
        .report-card .report-date {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .report-card h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .report-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Timeline */
        .timeline-list {
            position: relative;
            padding-left: 28px;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background-color: var(--border);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 24px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 2px solid var(--surface);
            box-shadow: 0 0 0 2px var(--primary);
        }
        .timeline-item .tl-date {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .timeline-item .tl-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Feedback Form */
        .feedback-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .feedback-form input[type="email"] {
            flex: 1;
            min-width: 240px;
            height: 44px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            padding: 0 16px;
            font-size: 14px;
            background: var(--surface);
            color: var(--text);
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .feedback-form input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: var(--shadow-focus);
        }
        .feedback-form .btn {
            height: 44px;
            border-radius: var(--radius-btn);
        }

        /* Footer */
        .footer {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(245, 247, 242, .08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-grid h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-on-dark);
        }
        .footer-grid a {
            display: block;
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 247, 242, .6);
            margin-bottom: 8px;
            transition: color .2s ease;
        }
        .footer-grid a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: center;
            font-size: 12px;
            color: rgba(245, 247, 242, .45);
            border-top: 1px solid rgba(245, 247, 242, .1);
            padding-top: 24px;
        }
        .footer-bottom a {
            color: rgba(245, 247, 242, .5);
            transition: color .2s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* Section Header */
        .section-header {
            margin-bottom: 36px;
        }
        .section-header .heading-lg {
            margin-bottom: 12px;
        }
        .section-header p {
            max-width: 720px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .report-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .method-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.open {
                display: block;
            }
            .progress-steps {
                padding: 0 12px;
            }
            .step-divider {
                display: none;
            }
            .metric-grid {
                grid-template-columns: 1fr;
            }
            .report-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 48px 0;
            }
            .category-header {
                padding: 40px 0 36px;
            }
            .chart-panel {
                padding: 20px;
            }
            .chart-bars {
                height: 120px;
                gap: 6px;
            }
            .chart-labels {
                gap: 6px;
            }
            .chart-label {
                font-size: 9px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feedback-form {
                flex-direction: column;
            }
            .feedback-form input[type="email"] {
                min-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                height: 56px;
            }
            .logo {
                font-size: 20px;
            }
            .heading-xl {
                font-size: 30px;
            }
            .heading-lg {
                font-size: 24px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .category-header p {
                font-size: 15px;
            }
            .metric-card {
                padding: 20px 16px;
            }
            .metric-card .metric-num {
                font-size: 32px;
            }
            .timeline-list {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -17px;
                width: 8px;
                height: 8px;
            }
            .footer {
                padding: 40px 0 24px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0,0,0,.06);
            --shadow-card-hover: 0 16px 40px rgba(0,0,0,.12);
            --shadow-focus: 0 0 0 3px rgba(31,106,58,.25);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background-color: var(--surface);
        }
        .section-dark {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
        }
        .heading-xl {
            font-size: clamp(40px, 5.5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.01em;
        }
        .heading-lg {
            font-size: clamp(28px, 3.5vw, 36px);
            font-weight: 600;
            line-height: 1.25;
        }
        .heading-md {
            font-size: clamp(20px, 2.5vw, 24px);
            font-weight: 600;
            line-height: 1.3;
        }
        .text-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .text-secondary {
            color: var(--text-secondary);
        }
        .text-on-dark-secondary {
            color: rgba(245, 247, 242, .72);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-tag);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
            background-color: rgba(31, 106, 58, .08);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-accent {
            background-color: rgba(212, 243, 74, .18);
            color: #87a622;
        }
        .tag-danger {
            background-color: rgba(248, 92, 58, .1);
            color: var(--danger);
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .card-dark {
            background: rgba(255, 255, 255, .04);
            border-color: rgba(255, 255, 255, .08);
            color: var(--text-on-dark);
        }
        .card-dark:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 40px rgba(0,0,0,.35);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn:active {
            transform: scale(.98);
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-focus);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover {
            background-color: #c0e22e;
            border-color: #c0e22e;
            box-shadow: var(--shadow-focus);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: rgba(31, 106, 58, .06);
            border-color: var(--primary-dark);
        }
        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(245, 247, 242, .4);
        }
        .btn-outline-light:hover {
            background-color: rgba(245, 247, 242, .1);
            border-color: var(--text-on-dark);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: 12px;
        }
        .progress-nav {
            display: flex;
            align-items: center;
            gap: 0;
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) transparent;
        }
        .progress-nav::-webkit-scrollbar {
            height: 3px;
        }
        .progress-nav::-webkit-scrollbar-thumb {
            background-color: var(--primary);
            border-radius: 999px;
        }
        .progress-step {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color .2s ease, background-color .2s ease;
        }
        .progress-step:hover {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .04);
        }
        .progress-step.current {
            color: var(--primary);
        }
        .progress-step.current::after {
            content: '';
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 0;
            height: 3px;
            background-color: var(--primary);
            border-radius: 3px 3px 0 0;
        }
        .progress-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: rgba(31, 106, 58, .1);
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .progress-step.current .step-num {
            background-color: var(--primary);
            color: var(--text-on-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            font-size: 15px;
            font-weight: 500;
        }
        .nav-link {
            position: relative;
            padding: 4px 0;
            color: var(--text-secondary);
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .footer {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
            padding: 64px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            letter-spacing: .02em;
        }
        .footer a {
            display: block;
            color: rgba(245, 247, 242, .6);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 8px;
            transition: color .2s ease;
        }
        .footer a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(245, 247, 242, .5);
        }
        .footer-bottom a {
            display: inline;
            margin-bottom: 0;
            color: rgba(245, 247, 242, .5);
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb .sep {
            color: var(--text-secondary);
            font-size: 12px;
        }
        .toc-list {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .toc-item {
            display: block;
            padding: 10px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-left: 3px solid transparent;
            transition: all .2s ease;
            border-radius: 0 8px 8px 0;
        }
        .toc-item:hover {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .05);
            border-left-color: var(--primary);
        }
        .toc-item.active {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .08);
            border-left-color: var(--primary);
            font-weight: 600;
        }
        .article-card {
            display: flex;
            flex-direction: column;
            gap: 0;
            transition: all .25s ease;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }
        .article-card .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
        }
        .article-card .article-title {
            font-size: 19px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: color .2s ease;
        }
        .article-card:hover .article-title {
            color: var(--primary);
        }
        .divider-line {
            height: 1px;
            background-color: var(--border);
            margin: 0;
        }
        .form-input {
            width: 100%;
            height: 44px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background-color: var(--surface);
            padding: 0 16px;
            font-size: 15px;
            color: var(--text);
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31, 106, 58, .15);
        }
        .form-input::placeholder {
            color: var(--text-secondary);
            opacity: .7;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .toc-list {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px;
                margin-bottom: 24px;
            }
            .toc-item {
                border-left: none;
                border-radius: 999px;
                padding: 6px 16px;
                background-color: rgba(31, 106, 58, .05);
            }
            .toc-item:hover {
                background-color: rgba(31, 106, 58, .1);
                border-left: none;
            }
            .toc-item.active {
                background-color: var(--primary);
                color: var(--text-on-dark);
                border-left: none;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .nav-links {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .heading-xl {
                font-size: 32px;
            }
            .heading-lg {
                font-size: 24px;
            }
            .article-card .article-title {
                font-size: 17px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, .06);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, .12);
            --shadow-focus: 0 0 0 3px rgba(31, 106, 58, .25);
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 64px 0;
        }

        .section-alt {
            background-color: var(--surface);
        }

        .section-dark {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
        }

        .heading-xl {
            font-size: clamp(36px, 4.5vw, 48px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.01em;
        }

        .heading-lg {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.25;
        }

        .heading-md {
            font-size: clamp(18px, 2.2vw, 22px);
            font-weight: 600;
            line-height: 1.35;
        }

        .text-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }

        .text-secondary {
            color: var(--text-secondary);
        }

        .text-on-dark-secondary {
            color: rgba(245, 247, 242, .72);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--radius-tag);
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
            background-color: rgba(31, 106, 58, .08);
            color: var(--primary);
            white-space: nowrap;
        }

        .tag-accent {
            background-color: rgba(212, 243, 74, .18);
            color: #7a9620;
        }

        .tag-danger {
            background-color: rgba(248, 92, 58, .1);
            color: var(--danger);
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            overflow: hidden;
        }

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

        .card-dark {
            background: rgba(255, 255, 255, .04);
            border-color: rgba(255, 255, 255, .08);
            color: var(--text-on-dark);
        }

        .card-dark:hover {
            border-color: var(--accent);
            box-shadow: 0 16px 40px rgba(0, 0, 0, .35);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 12px 26px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-on-dark);
            border: 1px solid var(--primary);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-focus);
        }

        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            border: 1px solid var(--accent);
        }

        .btn-accent:hover {
            background-color: #c0e22e;
            border-color: #c0e22e;
            box-shadow: var(--shadow-focus);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background-color: rgba(31, 106, 58, .06);
            border-color: var(--primary-dark);
        }

        .btn-outline-light {
            background-color: transparent;
            color: var(--text-on-dark);
            border: 1px solid rgba(245, 247, 242, .4);
        }

        .btn-outline-light:hover {
            background-color: rgba(245, 247, 242, .1);
            border-color: var(--text-on-dark);
        }

        .btn-lg {
            padding: 15px 34px;
            font-size: 16px;
            border-radius: 12px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(255, 255, 255, .97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 12px;
            padding-bottom: 12px;
            flex-wrap: wrap;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            color: var(--accent);
            letter-spacing: -0.01em;
        }

        .logo-text {
            font-weight: 800;
            font-size: 18px;
            letter-spacing: .02em;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            color: var(--text-secondary);
            transition: color .2s ease, background-color .2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text);
            background-color: rgba(31, 106, 58, .06);
        }

        .nav-link.active {
            color: var(--primary);
            background-color: rgba(31, 106, 58, .08);
            font-weight: 600;
            position: relative;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 0 10px;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            height: 2px;
            background-color: var(--text);
            border-radius: 2px;
            transition: transform .25s ease, opacity .25s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Progress steps */
        .progress-steps {
            background-color: var(--primary-dark);
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .progress-steps-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .progress-steps-inner::-webkit-scrollbar {
            display: none;
        }

        .progress-step {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(245, 247, 242, .6);
            white-space: nowrap;
            transition: color .2s ease, background-color .2s ease;
            flex-shrink: 0;
        }

        .progress-step:hover {
            color: var(--text-on-dark);
            background-color: rgba(255, 255, 255, .06);
        }

        .progress-step.active {
            color: var(--accent);
            background-color: rgba(212, 243, 74, .12);
            font-weight: 600;
        }

        .progress-step .step-num {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, .12);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .progress-step.active .step-num {
            background-color: var(--accent);
            color: var(--primary-dark);
        }

        .progress-arrow {
            color: rgba(245, 247, 242, .3);
            font-size: 14px;
            flex-shrink: 0;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            padding: 16px 0 8px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .sep {
            color: var(--border);
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
        }

        /* Hero area for category page */
        .category-hero {
            position: relative;
            min-height: 260px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--surface-dark);
            border-radius: 0 0 24px 24px;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .55;
        }

        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 18, .92) 0%, rgba(15, 23, 18, .7) 50%, rgba(31, 106, 58, .5) 100%);
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
            padding: 32px 0;
        }

        .category-hero .h1-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: rgba(212, 243, 74, .15);
            color: var(--accent);
            border-radius: 999px;
            padding: 5px 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .category-hero h1 {
            color: var(--text-on-dark);
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .category-hero .hero-desc {
            color: rgba(245, 247, 242, .78);
            font-size: 15px;
            line-height: 1.8;
            max-width: 720px;
        }

        /* Timeline */
        .timeline-list {
            position: relative;
            padding-left: 28px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .timeline-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), rgba(31, 106, 58, .2));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 20px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-item:first-child::before {
            background-color: var(--accent);
            box-shadow: 0 0 0 2px var(--accent);
        }

        .timeline-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .02em;
            margin-bottom: 4px;
        }

        /* News card with big image */
        .news-card-large {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }

        .news-card-large:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .news-card-large .news-img {
            height: 100%;
            min-height: 180px;
            object-fit: cover;
        }

        .news-card-large .news-body {
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--surface);
            overflow: hidden;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            cursor: pointer;
            transition: color .2s ease;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background-color: rgba(31, 106, 58, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            transition: background-color .2s ease, transform .2s ease;
        }

        .faq-item.open .faq-icon {
            background-color: var(--primary);
            color: var(--text-on-dark);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        /* Form */
        .form-input {
            width: 100%;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--surface);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31, 106, 58, .15);
        }

        .form-input::placeholder {
            color: rgba(85, 99, 91, .6);
        }

        .form-error {
            color: var(--danger);
            font-size: 13px;
            margin-top: 6px;
            display: none;
        }

        .form-success {
            color: var(--primary);
            font-size: 13px;
            margin-top: 6px;
            display: none;
        }

        /* Footer */
        .footer {
            background-color: var(--surface-dark);
            color: var(--text-on-dark);
            padding: 48px 0 20px;
        }

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

        .footer h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-on-dark);
        }

        .footer a {
            display: block;
            font-size: 13px;
            color: rgba(245, 247, 242, .6);
            margin-bottom: 8px;
            transition: color .2s ease;
        }

        .footer a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(245, 247, 242, .5);
        }

        .footer-bottom a {
            display: inline;
            font-size: 12px;
            color: rgba(245, 247, 242, .5);
            margin-bottom: 0;
        }

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

        /* Milestone cards */
        .milestone-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .milestone-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            text-align: center;
            transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .milestone-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .milestone-card .milestone-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .milestone-card .milestone-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Media quote */
        .media-quote {
            border-left: 4px solid var(--accent);
            padding: 18px 20px;
            background: rgba(255, 255, 255, .04);
            border-radius: 0 12px 12px 0;
            margin-bottom: 16px;
        }

        .media-quote .quote-text {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-on-dark);
            margin-bottom: 8px;
        }

        .media-quote .quote-source {
            font-size: 13px;
            color: rgba(245, 247, 242, .55);
        }

        /* Category entry cards */
        .entry-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .entry-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .entry-card .entry-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .entry-card .entry-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .milestone-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-card-large {
                grid-template-columns: 1fr 220px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 8px 0;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .nav-link.active::after {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .section {
                padding: 40px 0;
            }
            .category-hero {
                min-height: 220px;
                border-radius: 0 0 16px 16px;
            }
            .news-card-large {
                grid-template-columns: 1fr;
            }
            .news-card-large .news-img {
                height: 200px;
                width: 100%;
            }
            .milestone-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .milestone-card .milestone-num {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .progress-step {
                font-size: 12px;
                padding: 4px 10px;
            }
            .progress-arrow {
                font-size: 11px;
            }
        }

        @media (max-width: 520px) {
            .milestone-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .milestone-card {
                padding: 14px 10px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .timeline-list {
                padding-left: 20px;
            }
            .timeline-item {
                padding-left: 12px;
            }
            .timeline-item::before {
                left: -18px;
                width: 10px;
                height: 10px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1F6A3A;
            --primary-dark: #0F1712;
            --surface-dark: #111810;
            --accent: #D4F34A;
            --danger: #F85C3A;
            --bg: #F4F6F0;
            --surface: #FFFFFF;
            --border: #E5EBE2;
            --text: #101613;
            --text-secondary: #55635B;
            --text-on-dark: #F5F7F2;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow-card: 0 10px 30px rgba(0,0,0,.06);
            --shadow-card-hover: 0 16px 40px rgba(0,0,0,.12);
            --shadow-focus: 0 0 0 3px rgba(31,106,58,.25);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button { cursor: pointer; border: none; background: none; }
        button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section { padding: 80px 0; }
        .section-alt { background-color: var(--surface); }
        .section-dark { background-color: var(--surface-dark); color: var(--text-on-dark); }
        .heading-xl { font-size: clamp(40px, 5.5vw, 56px); font-weight: 800; line-height: 1.15; letter-spacing: -0.01em; }
        .heading-lg { font-size: clamp(28px, 3.5vw, 36px); font-weight: 600; line-height: 1.25; }
        .heading-md { font-size: clamp(20px, 2.5vw, 24px); font-weight: 600; line-height: 1.3; }
        .text-body { font-size: 16px; line-height: 1.8; color: var(--text); }
        .text-secondary { color: var(--text-secondary); }
        .text-on-dark-secondary { color: rgba(245, 247, 242, .72); }
        .tag {
            display: inline-flex; align-items: center; gap: 6px; border-radius: var(--radius-tag);
            padding: 4px 14px; font-size: 13px; font-weight: 500; line-height: 1.4;
            background-color: rgba(31, 106, 58, .08); color: var(--primary); white-space: nowrap;
        }
        .tag-accent { background-color: rgba(212, 243, 74, .18); color: #87a622; }
        .tag-danger { background-color: rgba(248, 92, 58, .1); color: var(--danger); }
        .card {
            background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card);
            box-shadow: var(--shadow-card); transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease; overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); border-color: var(--primary); }
        .card-dark { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.08); color: var(--text-on-dark); }
        .card-dark:hover { border-color: var(--accent); box-shadow: 0 16px 40px rgba(0,0,0,.35); }
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            border-radius: var(--radius-btn); padding: 13px 28px; font-size: 15px; font-weight: 600; line-height: 1.4;
            transition: background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
            text-align: center; white-space: nowrap;
        }
        .btn:active { transform: scale(.98); }
        .btn-primary { background-color: var(--primary); color: var(--text-on-dark); border: 1px solid var(--primary); }
        .btn-primary:hover { background-color: var(--primary-dark); border-color: var(--primary-dark); box-shadow: var(--shadow-focus); }
        .btn-accent { background-color: var(--accent); color: var(--primary-dark); border: 1px solid var(--accent); }
        .btn-accent:hover { background-color: #c0e22e; border-color: #c0e22e; box-shadow: var(--shadow-focus); }
        .btn-outline { background-color: transparent; color: var(--primary); border: 1px solid var(--primary); }
        .btn-outline:hover { background-color: rgba(31,106,58,.06); border-color: var(--primary-dark); }
        .btn-outline-light { background-color: transparent; color: var(--text-on-dark); border: 1px solid rgba(245,247,242,.4); }
        .btn-outline-light:hover { background-color: rgba(245,247,242,.1); border-color: var(--text-on-dark); }
        .btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 12px; }

        /* 导航 */
        .header {
            position: sticky; top: 0; z-index: 50; background: var(--surface-dark);
            border-bottom: 1px solid rgba(255,255,255,.08); transition: box-shadow .3s ease;
        }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
        .logo { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 800; color: var(--text-on-dark); letter-spacing: .02em; }
        .logo-mark { width: 32px; height: 32px; border-radius: 8px; background: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 800; color: var(--accent); flex-shrink: 0; }
        .nav-links { display: flex; align-items: center; gap: 4px; }
        .nav-link {
            padding: 8px 14px; font-size: 14px; font-weight: 500; color: rgba(245,247,242,.7);
            border-radius: 8px; transition: color .2s, background-color .2s, border-color .2s; position: relative;
            white-space: nowrap;
        }
        .nav-link:hover { color: var(--text-on-dark); background-color: rgba(255,255,255,.06); }
        .nav-link.active { color: var(--text-on-dark); background-color: rgba(212,243,74,.12); }
        .nav-link.active::after {
            content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
            background: var(--accent); border-radius: 2px;
        }
        .nav-toggle { display: none; color: var(--text-on-dark); font-size: 24px; padding: 8px; }

        /* 进度步骤导航 */
        .progress-nav-wrap { background: var(--primary-dark); border-bottom: 1px solid rgba(255,255,255,.06); }
        .progress-nav { display: flex; align-items: center; gap: 8px; min-height: 48px; }
        .progress-step {
            display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px;
            font-size: 13px; font-weight: 500; border-radius: 999px; color: rgba(245,247,242,.55);
            transition: color .2s, background-color .2s; white-space: nowrap;
        }
        .progress-step:hover { color: var(--text-on-dark); background-color: rgba(255,255,255,.08); }
        .progress-step .step-num {
            width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
            font-size: 11px; font-weight: 700; background: rgba(255,255,255,.1); color: inherit; flex-shrink: 0;
        }
        .progress-step.active { background-color: var(--accent); color: var(--primary-dark); }
        .progress-step.active .step-num { background: var(--primary-dark); color: var(--accent); }
        .progress-step.done .step-num { background: var(--primary); color: var(--text-on-dark); }

        /* 面包屑与H1区 */
        .category-hero {
            background-color: var(--surface-dark); position: relative; overflow: hidden;
            min-height: 220px; display: flex; align-items: center;
            background-image: url('/assets/images/e517a86819d1000b.webp');
            background-size: cover; background-position: center;
        }
        .category-hero::before {
            content: ""; position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(17,24,16,.86) 0%, rgba(17,24,16,.68) 100%);
        }
        .category-hero .container { position: relative; z-index: 1; }
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(245,247,242,.55); margin-bottom: 14px; flex-wrap: wrap; }
        .breadcrumb a { color: rgba(245,247,242,.7); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { color: rgba(245,247,242,.35); }
        .category-hero h1 { color: var(--text-on-dark); margin-bottom: 10px; }
        .category-hero .intro-text { color: rgba(245,247,242,.72); font-size: 16px; line-height: 1.8; max-width: 820px; }

        /* 不规则网格场景卡 */
        .scene-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
        .scene-card {
            background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card);
            box-shadow: var(--shadow-card); overflow: hidden; transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
            display: flex; flex-direction: column;
        }
        .scene-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); border-color: var(--primary); }
        .scene-card img { width: 100%; height: 200px; object-fit: cover; }
        .scene-card .scene-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
        .scene-card .scene-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
        .scene-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
        .scene-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; flex: 1; }
        .scene-card .scene-meta { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-secondary); display: flex; gap: 16px; flex-wrap: wrap; }
        .scene-card .scene-meta span { display: flex; align-items: center; gap: 4px; }
        /* 不规则尺寸 */
        .scene-card-lg { grid-column: span 4; }
        .scene-card-lg img { height: 300px; }
        .scene-card-md { grid-column: span 2; }
        .scene-card-md img { height: 220px; }
        .scene-card-wide { grid-column: span 3; }
        .scene-card-wide img { height: 180px; }
        .scene-card-full { grid-column: span 6; }

        /* 设备适配卡 */
        .device-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .device-card { text-align: left; padding: 24px 20px; }
        .device-card .device-icon { width: 48px; height: 48px; border-radius: 12px; background: rgba(31,106,58,.08); display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 14px; }
        .device-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
        .device-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

        /* 场所适配 */
        .place-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
        .place-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 20px 16px; text-align: center; transition: border-color .25s, box-shadow .25s, transform .25s; }
        .place-item:hover { border-color: var(--primary); box-shadow: var(--shadow-card-hover); transform: translateY(-3px); }
        .place-item .place-icon { font-size: 28px; margin-bottom: 10px; display: block; }
        .place-item h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
        .place-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

        /* 指标带 */
        .metric-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
        .metric-item { text-align: center; padding: 24px 12px; border-radius: var(--radius-card); background: var(--surface); border: 1px solid var(--border); transition: border-color .25s, box-shadow .25s; }
        .metric-item:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
        .metric-item .metric-num { font-size: 32px; font-weight: 800; color: var(--primary); letter-spacing: -0.02em; line-height: 1.2; }
        .metric-item .metric-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }

        /* 特色功能列表 */
        .feature-list { display: flex; flex-direction: column; gap: 20px; }
        .feature-row { display: flex; align-items: center; gap: 24px; padding: 24px 28px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); transition: border-color .25s, box-shadow .25s; }
        .feature-row:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
        .feature-row .feature-badge { width: 48px; height: 48px; border-radius: 12px; background: rgba(212,243,74,.16); display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }
        .feature-row h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; color: var(--text); }
        .feature-row p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

        /* 频道入口 */
        .channel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
        .channel-card {
            display: flex; align-items: center; gap: 12px; padding: 18px 18px;
            background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card);
            transition: border-color .25s, box-shadow .25s, transform .25s;
        }
        .channel-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); transform: translateY(-3px); }
        .channel-card .ch-icon { width: 42px; height: 42px; border-radius: 10px; background: rgba(31,106,58,.08); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
        .channel-card h3 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 2px; }
        .channel-card p { font-size: 13px; color: var(--text-secondary); }

        /* 订阅表单区 */
        .subscribe-box {
            background: var(--surface-dark); border-radius: var(--radius-card); padding: 48px 40px;
            display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
            background-image: url('/assets/images/0b11982e6d60ec49.webp'); background-size: cover; background-position: center;
            position: relative; overflow: hidden;
        }
        .subscribe-box::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(17,24,16,.92) 0%, rgba(17,24,16,.78) 100%); }
        .subscribe-box > * { position: relative; z-index: 1; }
        .subscribe-box .sub-left { flex: 1; min-width: 280px; }
        .subscribe-box .sub-left h3 { color: var(--text-on-dark); font-size: 24px; font-weight: 700; margin-bottom: 10px; }
        .subscribe-box .sub-left p { color: rgba(245,247,242,.7); font-size: 15px; line-height: 1.7; }
        .subscribe-box .sub-right { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
        .sub-input { height: 44px; border-radius: var(--radius-btn); border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.1); color: var(--text-on-dark); padding: 0 16px; font-size: 14px; min-width: 260px; transition: border-color .25s, box-shadow .25s; }
        .sub-input::placeholder { color: rgba(245,247,242,.5); }
        .sub-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(212,243,74,.2); }

        /* 页脚 */
        .footer { background: var(--surface-dark); color: rgba(245,247,242,.75); padding: 56px 0 24px; border-top: 1px solid rgba(255,255,255,.06); }
        .footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-bottom: 32px; }
        .footer h4 { color: var(--text-on-dark); font-size: 15px; font-weight: 700; margin-bottom: 14px; }
        .footer a { display: block; font-size: 14px; color: rgba(245,247,242,.55); padding: 4px 0; transition: color .2s; }
        .footer a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.08); padding-top: 18px;
            display: flex; flex-wrap: wrap; gap: 10px 24px; font-size: 13px; color: rgba(245,247,242,.45);
            align-items: center; justify-content: space-between;
        }
        .footer-bottom a { color: rgba(245,247,242,.6); font-size: 13px; }
        .footer-bottom a:hover { color: var(--accent); }

        /* 响应式 */
        @media (max-width: 1024px) {
            .scene-grid { grid-template-columns: repeat(4, 1fr); }
            .scene-card-lg { grid-column: span 4; }
            .scene-card-md { grid-column: span 2; }
            .scene-card-wide { grid-column: span 2; }
            .scene-card-full { grid-column: span 4; }
            .device-grid { grid-template-columns: repeat(2, 1fr); }
            .place-list { grid-template-columns: repeat(3, 1fr); }
            .metric-strip { grid-template-columns: repeat(3, 1fr); }
            .channel-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--surface-dark); flex-direction: column; padding: 12px 20px; border-bottom: 1px solid rgba(255,255,255,.08); }
            .nav-links.open { display: flex; }
            .nav-link { width: 100%; padding: 10px 14px; }
            .nav-link.active::after { display: none; }
            .nav-link.active { background-color: rgba(212,243,74,.12); border-left: 3px solid var(--accent); border-radius: 0; }
            .nav-toggle { display: block; }
            .progress-nav { overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 4px; }
            .progress-step { font-size: 12px; padding: 5px 10px; }
            .progress-step .step-num { width: 18px; height: 18px; font-size: 10px; }
            .category-hero { min-height: 200px; }
            .scene-grid { grid-template-columns: 1fr; }
            .scene-card-lg, .scene-card-md, .scene-card-wide, .scene-card-full { grid-column: span 1; }
            .scene-card img, .scene-card-lg img, .scene-card-md img, .scene-card-wide img { height: 200px; }
            .device-grid { grid-template-columns: 1fr; }
            .place-list { grid-template-columns: repeat(2, 1fr); }
            .metric-strip { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .channel-grid { grid-template-columns: 1fr; }
            .feature-row { flex-direction: column; align-items: flex-start; gap: 14px; }
            .subscribe-box { padding: 32px 24px; flex-direction: column; align-items: stretch; }
            .sub-input { min-width: 100%; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .place-list { grid-template-columns: 1fr; }
            .metric-strip { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .heading-lg { font-size: 24px; }
            .subscribe-box .sub-right { flex-direction: column; width: 100%; }
            .sub-input { width: 100%; }
            .subscribe-box .btn { width: 100%; }
            .channel-grid { grid-template-columns: 1fr; }
        }