/* roulang page: index */
:root {
            --graphite: #1C1D21;
            --amber: #C99255;
            --warmgray: #F5F4F1;
            --mistgray: #E9E8E4;
            --linegray: #E4E2DE;
            --main-text: #1C1D21;
            --sub-text: #5B5B5F;
            --hint-text: #9A9A9F;
            --card-radius: 16px;
            --btn-radius: 10px;
            --shadow-soft: 0 2px 8px rgba(28, 29, 33, 0.06);
            --shadow-lift: 0 12px 28px rgba(28, 29, 33, 0.12);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'sans-serif';
            --font-mono: 'JetBrains Mono', 'Courier New', 'monospace';
            --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--warmgray);
            color: var(--main-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-osx-font-smoothing: grayscale;
            padding-bottom: 64px;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container-site {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .section-pad {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        @media (max-width: 767px) {
            .section-pad {
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }

        .h2-title {
            font-size: clamp(32px, 4vw, 42px);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--main-text);
        }

        .h3-title {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.3;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            background: var(--graphite);
            color: #fff;
            padding: 4px 12px;
            border-radius: 6px;
        }

        .section-tag-light {
            background: rgba(28, 29, 33, 0.08);
            color: var(--graphite);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--amber);
            color: var(--graphite);
            font-weight: 600;
            font-size: 15px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--btn-radius);
            transition: all 0.25s var(--ease-out);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--amber-light, #D7A76E);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lift);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--graphite);
            font-weight: 600;
            font-size: 15px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--btn-radius);
            border: 1px solid var(--graphite);
            transition: all 0.25s var(--ease-out);
            white-space: nowrap;
        }

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

        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--graphite);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--btn-radius);
            transition: all 0.25s var(--ease-out);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-dark:hover {
            background: #2A2B30;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lift);
        }

        .btn-dark:active {
            transform: scale(0.98);
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            padding: 8px 2px;
            position: relative;
            transition: color 0.2s;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--amber);
            transition: width 0.3s var(--ease-out);
        }

        .nav-link:hover {
            color: var(--main-text);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--main-text);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .card-base {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-soft);
            border: 1px solid var(--linegray);
            overflow: hidden;
            transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
        }

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

        .cover-card {
            position: relative;
            overflow: hidden;
            border-radius: 16px;
            cursor: pointer;
            transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), opacity 0.3s;
        }

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

        .cover-card:active {
            transform: scale(0.98);
        }

        .cover-card img {
            transition: transform 0.7s ease;
        }

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

        .cover-card .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.62) 0%, transparent 100%);
            pointer-events: none;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 20px 24px;
            border-radius: 12px;
            background: #fff;
            border: 1px solid var(--linegray);
            transition: background 0.25s, border-color 0.25s, transform 0.2s;
        }

        .news-item:hover {
            background: #F0EFEB;
            border-color: rgba(201, 146, 85, 0.4);
            transform: translateX(4px);
        }

        .news-item:active {
            transform: scale(0.99);
        }

        .news-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 72px;
            height: 72px;
            background: var(--warmgray);
            border-radius: 10px;
            font-family: var(--font-mono);
        }

        .news-date .day {
            font-size: 26px;
            font-weight: 700;
            color: var(--graphite);
            line-height: 1.1;
        }

        .news-date .ym {
            font-size: 11px;
            color: var(--hint-text);
            line-height: 1.4;
        }

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

        .faq-item:first-child {
            border-top: 1px solid var(--linegray);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--main-text);
            cursor: pointer;
            transition: color 0.2s;
        }

        .faq-q:hover {
            color: var(--amber-dark, #A9773E);
        }

        .faq-q .icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--mistgray);
            color: var(--graphite);
            font-family: var(--font-mono);
            font-size: 18px;
            transition: transform 0.3s var(--ease-out), background 0.3s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q .icon {
            transform: rotate(45deg);
            background: var(--amber);
            color: #fff;
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s var(--ease-out);
            font-size: 15px;
            color: var(--sub-text);
            line-height: 1.7;
        }

        .faq-item.open .faq-a {
            max-height: 400px;
            padding-bottom: 22px;
        }

        .mobile-tabbar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 64px;
            background: #fff;
            border-top: 1px solid var(--linegray);
            display: flex;
            align-items: stretch;
            padding: 0;
        }

        @media (min-width: 1024px) {
            .mobile-tabbar {
                display: none;
            }
        }

        .mobile-tabbar .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 12px;
            color: #8B8B8F;
            transition: color 0.2s;
        }

        .mobile-tabbar .tab-item i {
            font-size: 20px;
            transition: transform 0.2s;
        }

        .mobile-tabbar .tab-item:active {
            transform: scale(0.96);
        }

        .mobile-tabbar .tab-item.active {
            color: var(--amber);
            font-weight: 600;
        }

        .mobile-tabbar .tab-item.active i {
            color: var(--amber);
        }

        .scrollbar-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }

        .hero-enter {
            opacity: 0;
            transform: translateY(12px);
            animation: fadeInUp 0.7s var(--ease-out) forwards;
        }

        .hero-enter-2 {
            animation-delay: 0.15s;
        }

        .hero-enter-3 {
            animation-delay: 0.3s;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .pulse-glow {
            animation: pulseGlow 2s ease infinite;
        }

        @keyframes pulseGlow {
            0% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
            50% {
                box-shadow: 0 0 24px rgba(201, 146, 85, 0.45);
            }
            100% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        .section-mark {
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--hint-text);
        }

        .product-sn {
            font-family: var(--font-mono);
            font-size: 34px;
            font-weight: 700;
            line-height: 1.1;
            color: rgba(28, 29, 33, 0.12);
        }

        .pin-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-family: var(--font-mono);
            font-size: 12px;
            font-weight: 600;
            background: rgba(28, 29, 33, 0.06);
            padding: 4px 10px;
            border-radius: 6px;
            color: var(--sub-text);
        }

        .hero-image-wrap {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lift);
        }

        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            background: rgba(201, 146, 85, 0.15);
            color: #A9773E;
        }

        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--main-text);
            transition: color 0.2s, gap 0.2s;
        }

        .link-arrow:hover {
            color: var(--amber);
            gap: 10px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: var(--main-text);
            margin-bottom: 16px;
        }

        .footer-link {
            font-size: 14px;
            color: var(--sub-text);
            display: inline-block;
            padding: 4px 0;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-link:hover {
            color: var(--amber);
            padding-left: 4px;
        }

        .gm-metric {
            text-align: left;
            padding: 0 24px;
            position: relative;
        }

        .gm-metric:not(:first-child)::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 40px;
            background: var(--linegray);
        }

        .gm-metric:first-child {
            padding-left: 0;
        }

        .gm-metric .num {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--graphite);
            line-height: 1.2;
        }

        .gm-metric .label {
            font-size: 13px;
            color: var(--hint-text);
            margin-top: 4px;
        }

        .cta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: rgba(255, 255, 255, 0.9);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
            background: rgba(255, 255, 255, 0.04);
        }

        .review-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            min-width: 320px;
            max-width: 360px;
            border: 1px solid var(--linegray);
            box-shadow: var(--shadow-soft);
            transition: box-shadow 0.3s, transform 0.3s;
        }

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

        .rating-star {
            color: #C99255;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .avatar-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            background: var(--graphite);
            flex-shrink: 0;
        }

/* roulang page: category1 */
:root {
            --graphite: #1C1D21;
            --amber: #C99255;
            --warmgray: #F5F4F1;
            --mist: #E9E8E4;
            --inklight: #5B5B5F;
            --inkfade: #9A9A9F;
            --line: #E4E2DE;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 8px rgba(28, 29, 33, 0.06);
            --shadow-hover: 0 12px 28px rgba(28, 29, 33, 0.12);
            --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
            --dur: 0.3s;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--warmgray);
            color: var(--graphite);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 80px;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container-site {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .header-shell {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(245, 244, 241, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(228, 226, 222, 0.7);
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }

        .header-shell.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 4px 16px rgba(28, 29, 33, 0.04);
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--graphite);
            padding: 8px 4px;
            position: relative;
            letter-spacing: 0.01em;
            transition: color 0.25s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--amber);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s var(--ease-out);
        }

        .nav-link:hover {
            color: var(--amber);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--amber);
            font-weight: 600;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--amber);
            color: var(--graphite);
            font-weight: 700;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            height: 48px;
            transition: all 0.3s var(--ease-out);
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            background: #d9a76e;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(201, 146, 85, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--graphite);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 14px 28px;
            height: 48px;
            border: 1px solid #d8d5cf;
            transition: all 0.3s var(--ease-out);
        }

        .btn-outline:hover {
            border-color: var(--amber);
            color: var(--amber);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            background: var(--mist);
            color: var(--inklight);
            letter-spacing: 0.02em;
            font-family: 'JetBrains Mono', 'Courier New', monospace;
        }

        .badge-amber {
            background: rgba(201, 146, 85, 0.12);
            color: #a3763e;
        }

        .card-hover {
            transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
        }

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

        .card-hover:active {
            transform: scale(0.98);
        }

        .section-title {
            font-size: clamp(28px, 3.5vw, 42px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--graphite);
        }

        .section-tag {
            font-family: 'JetBrains Mono', 'Courier New', monospace;
            font-size: 12px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--amber);
            font-weight: 600;
        }

        .footer-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

        .footer-link:hover {
            color: var(--amber);
            padding-left: 4px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--graphite);
            transition: color 0.25s ease;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--mist);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 400;
            color: var(--inklight);
            transition: all 0.3s var(--ease-out);
        }

        .faq-item.active .faq-icon {
            background: var(--amber);
            color: var(--graphite);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s var(--ease-out), padding 0.3s ease;
            font-size: 15px;
            color: var(--inklight);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 24px;
        }

        .mobile-tab-bar {
            transition: transform 0.4s var(--ease-out);
        }

        .mobile-tab-bar .tab-item {
            transition: color 0.2s ease, transform 0.2s ease;
        }

        .mobile-tab-bar .tab-item:active {
            transform: scale(0.96);
        }

        .tab-item.active {
            color: var(--amber);
        }

        .tab-item.active span {
            color: var(--graphite);
            font-weight: 600;
        }

        .hero-img-wrapper {
            overflow: hidden;
            border-radius: 24px;
            position: relative;
        }

        .hero-img-wrapper img {
            transition: transform 0.8s var(--ease-out);
        }

        .hero-img-wrapper:hover img {
            transform: scale(1.04);
        }

        .hero-stagger {
            opacity: 0;
            animation: fadeInUp 0.6s var(--ease-out) forwards;
        }

        .hero-stagger:nth-child(1) { animation-delay: 0.05s; }
        .hero-stagger:nth-child(2) { animation-delay: 0.15s; }
        .hero-stagger:nth-child(3) { animation-delay: 0.25s; }
        .hero-stagger:nth-child(4) { animation-delay: 0.35s; }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-scroll {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .fade-in-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .product-card img {
            transition: transform 0.7s ease;
        }

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

        .product-card .product-tag {
            transition: background 0.3s ease, color 0.3s ease;
        }

        .product-card:hover .product-tag {
            background: var(--amber);
            color: var(--graphite);
        }

        .scene-card {
            position: relative;
            overflow: hidden;
        }

        .scene-card img {
            transition: transform 0.7s ease;
        }

        .scene-card:hover img {
            transform: scale(1.05);
        }

        .news-list-item {
            transition: background 0.25s ease;
        }

        .news-list-item:hover {
            background: #F0EFEB;
        }

        .cta-pulse {
            animation: pulseGlow 2s ease infinite;
        }

        @keyframes pulseGlow {
            0% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
            50% {
                box-shadow: 0 0 24px rgba(201, 146, 85, 0.45);
            }
            100% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
        }

        .scroll-arrow:hover {
            background: var(--amber) !important;
            color: var(--graphite) !important;
            border-color: var(--amber) !important;
        }

        .section-anchor {
            scroll-margin-top: 110px;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

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

        @media (min-width: 640px) {
            .product-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .product-card-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

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

        @media (min-width: 768px) {
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .scene-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 28px;
        }

        @media (min-width: 768px) {
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .step-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .meta-divider {
            width: 1px;
            height: 40px;
            background: var(--line);
        }

        .hero-meta-number {
            font-family: 'JetBrains Mono', 'Courier New', monospace;
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--graphite);
            line-height: 1.2;
        }

        .hero-meta-label {
            font-size: 13px;
            color: var(--inklight);
            margin-top: 4px;
        }

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .section-padding {
            padding: 64px 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 96px 0;
            }
        }

/* roulang page: article */
:root {
            --color-graphite: #1C1D21;
            --color-amber: #C99255;
            --color-warmgray: #F5F4F1;
            --color-mistgray: #E9E8E4;
            --color-inksec: #5B5B5F;
            --color-inkdim: #9A9A9F;
            --color-border: #E4E2DE;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 8px rgba(28,29,33,0.06);
            --shadow-hover: 0 12px 28px rgba(28,29,33,0.12);
            --shadow-nav: 0 4px 16px rgba(28,29,33,0.04);
            --transition-base: 200ms cubic-bezier(0.22,1,0.36,1);
        }

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

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warmgray);
            color: var(--color-graphite);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-amber);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container-site {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        #siteHeader {
            background-color: rgba(245, 244, 241, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: all 300ms cubic-bezier(0.22, 1, 0.36, 1);
        }

        #siteHeader.scrolled {
            background-color: rgba(255, 255, 255, 0.96);
            box-shadow: var(--shadow-nav);
            border-bottom-color: rgba(228, 226, 222, 0.6);
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-inksec);
            padding: 6px 2px;
            position: relative;
            transition: color var(--transition-base);
        }

        .nav-link:hover {
            color: var(--color-amber);
        }

        .nav-link.active {
            color: var(--color-graphite);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background-color: var(--color-amber);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 30px;
            border-radius: 999px;
            background-color: var(--color-amber);
            color: var(--color-graphite);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
        }

        .btn-primary:hover {
            background-color: #d6a76f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 146, 85, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 30px;
            border-radius: 999px;
            background-color: var(--color-graphite);
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition-base);
        }

        .btn-dark:hover {
            background-color: var(--color-amber);
            color: var(--color-graphite);
            transform: translateY(-2px);
        }

        .btn-dark:active {
            transform: scale(0.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 30px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            color: var(--color-graphite);
            font-size: 15px;
            font-weight: 500;
            background-color: transparent;
            transition: all var(--transition-base);
        }

        .btn-outline:hover {
            border-color: var(--color-amber);
            color: var(--color-amber);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 13px;
            border-radius: 999px;
            background-color: rgba(201, 146, 85, 0.08);
            border: 1px solid rgba(201, 146, 85, 0.2);
            color: var(--color-amber);
            font-family: 'JetBrains Mono', 'DIN Alternate', monospace;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 999px;
            background-color: var(--color-mistgray);
            border: 1px solid var(--color-border);
            color: var(--color-inksec);
            font-size: 13px;
            transition: all var(--transition-base);
        }

        .tag-chip:hover {
            background-color: var(--color-amber);
            border-color: var(--color-amber);
            color: var(--color-graphite);
        }

        .mobile-tab a {
            transition: color var(--transition-base), transform 150ms ease;
        }

        .mobile-tab a.active {
            color: var(--color-amber);
        }

        .mobile-tab a.active span {
            color: var(--color-graphite);
            font-weight: 600;
        }

        .mobile-tab a:active {
            transform: scale(0.96);
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-base);
        }

        .footer-link:hover {
            color: var(--color-amber);
        }

        .article-prose {
            font-size: 17px;
            line-height: 1.8;
            color: #3d3d42;
        }

        .article-prose p {
            margin-bottom: 1.5em;
        }

        .article-prose h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-graphite);
            margin: 2.2em 0 0.8em;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .article-prose h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-graphite);
            margin: 1.8em 0 0.7em;
            line-height: 1.35;
        }

        .article-prose h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-graphite);
            margin: 1.5em 0 0.6em;
        }

        .article-prose ul,
        .article-prose ol {
            margin-bottom: 1.5em;
            padding-left: 1.6em;
        }

        .article-prose ul {
            list-style: disc;
        }

        .article-prose ol {
            list-style: decimal;
        }

        .article-prose li {
            margin-bottom: 0.45em;
            padding-left: 0.2em;
        }

        .article-prose blockquote {
            border-left: 4px solid var(--color-amber);
            background-color: var(--color-mistgray);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 1.8em 0;
            color: var(--color-inksec);
            font-size: 15px;
        }

        .article-prose blockquote p {
            margin-bottom: 0.5em;
        }

        .article-prose blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-prose table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 14px;
            line-height: 1.6;
        }

        .article-prose th,
        .article-prose td {
            border: 1px solid var(--color-border);
            padding: 10px 14px;
            text-align: left;
            vertical-align: top;
        }

        .article-prose th {
            background-color: var(--color-mistgray);
            font-weight: 600;
            color: var(--color-inksec);
            font-size: 13px;
            font-family: 'JetBrains Mono', 'DIN Alternate', monospace;
        }

        .article-prose tbody tr:nth-child(even) {
            background-color: rgba(245, 244, 241, 0.6);
        }

        .article-prose img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-card);
            margin: 2em 0;
            box-shadow: var(--shadow-card);
        }

        .article-prose code {
            font-family: 'JetBrains Mono', 'Courier New', monospace;
            font-size: 0.88em;
            background-color: var(--color-mistgray);
            padding: 2px 7px;
            border-radius: 4px;
            color: #a36f2a;
        }

        .article-prose a {
            color: var(--color-amber);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-base);
        }

        .article-prose a:hover {
            color: var(--color-graphite);
        }

        .article-prose hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 2.5em 0;
        }

        .card-hover {
            transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 300ms cubic-bezier(0.22, 1, 0.36, 1), border-color 300ms ease;
        }

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

        .card-hover:active {
            transform: scale(0.98);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
            50% {
                box-shadow: 0 0 24px rgba(201, 146, 85, 0.45);
            }
        }

        .pulse-glow {
            animation: pulseGlow 2s ease-in-out infinite;
        }

        .breadcrumb-truncate {
            max-width: 100px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        @media (min-width: 640px) {
            .breadcrumb-truncate {
                max-width: 360px;
            }
        }

        @media (min-width: 1024px) {
            .breadcrumb-truncate {
                max-width: 520px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
            --color-graphite: #1C1D21;
            --color-amber: #C99255;
            --color-cream: #F5F4F1;
            --color-mist: #E9E8E4;
            --color-body: #1C1D21;
            --color-secondary: #5B5B5F;
            --color-muted: #9A9A9F;
            --color-border: #E4E2DE;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-default: 0 2px 8px rgba(28,29,33,0.06);
            --shadow-hover: 0 12px 28px rgba(28,29,33,0.12);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'JetBrains Mono', 'Courier New', monospace;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-cream);
            color: var(--color-body);
            line-height: 1.75;
            font-size: 17px;
            padding-bottom: 64px;
        }
        @media (min-width: 768px) { body { padding-bottom: 0; } }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; }
        button { font-family: inherit; cursor: pointer; }
        .container-site { max-width: 1280px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }
        @media (max-width: 767px) { .container-site { padding-left: 16px; padding-right: 16px; } }
        .nav-link {
            font-size: 15px; font-weight: 500; color: var(--color-secondary);
            padding: 8px 4px; transition: color 0.2s; position: relative;
        }
        .nav-link:hover { color: var(--color-amber); }
        .nav-link.active { color: var(--color-body); font-weight: 600; }
        .nav-link.active::after {
            content: ''; position: absolute; left: 0; right: 0; bottom: 0;
            height: 2px; background: var(--color-amber); border-radius: 2px;
        }
        #site-header.scrolled {
            background: rgba(255,255,255,0.94);
            box-shadow: 0 4px 16px rgba(28,29,33,0.04);
            border-bottom: 1px solid var(--color-border);
        }
        .hero-badge {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            background: rgba(28,29,33,0.06);
            padding: 6px 14px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-body);
        }
        .stat-block {
            border-left: 1px solid rgba(28,29,33,0.12);
            padding-left: 20px;
        }
        .stat-block .num {
            font-family: var(--font-mono);
            font-weight: 800;
        }
        .btn-amber {
            background: var(--color-amber); color: var(--color-body); font-weight: 600;
            border-radius: 10px; padding: 0 28px; height: 48px;
            display: inline-flex; align-items: center; justify-content: center;
            transition: all 0.25s; border: 1px solid transparent;
            font-size: 15px;
        }
        .btn-amber:hover { background: #d4a366; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,146,85,0.3); }
        .btn-amber:active { transform: scale(0.98); }
        .btn-outline {
            background: transparent; color: var(--color-body); font-weight: 500;
            border: 1px solid var(--color-body); border-radius: 10px; padding: 0 28px; height: 48px;
            display: inline-flex; align-items: center; justify-content: center;
            transition: all 0.25s; font-size: 15px;
        }
        .btn-outline:hover { background: rgba(28,29,33,0.05); border-color: var(--color-amber); color: var(--color-amber); transform: translateY(-2px); }
        .btn-outline:active { transform: scale(0.98); }
        .product-card {
            background: #fff; border-radius: 16px; overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
            display: flex; flex-direction: column;
        }
        .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
        .product-card .img-wrap { overflow: hidden; }
        .product-card .img-wrap img { transition: transform 0.7s ease; }
        .product-card:hover .img-wrap img { transform: scale(1.04); }
        .product-card .card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
        .card-tag {
            font-family: var(--font-mono); font-size: 11px;
            background: rgba(28,29,33,0.75); color: #fff;
            padding: 4px 10px; border-radius: 6px;
            letter-spacing: 0.05em;
        }
        .card-tag-amber {
            font-family: var(--font-mono); font-size: 11px;
            background: rgba(201,146,85,0.15); color: var(--color-amber);
            padding: 4px 10px; border-radius: 6px;
            letter-spacing: 0.05em; border: 1px solid rgba(201,146,85,0.3);
        }
        .param-badge {
            font-family: var(--font-mono);
            background: #fff; border: 1px solid var(--color-border);
            padding: 8px 16px; border-radius: 999px;
            font-size: 13px; color: var(--color-body); font-weight: 500;
            display: inline-flex; align-items: center; gap: 6px;
            transition: all 0.2s;
        }
        .param-badge:hover { border-color: var(--color-amber); color: var(--color-amber); }
        .param-badge i { color: var(--color-amber); }
        .scene-card {
            background: #fff; border-radius: 16px; padding: 28px 24px;
            border: 1px solid var(--color-border); transition: all 0.3s;
        }
        .scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(201,146,85,0.4); }
        .scene-icon {
            width: 48px; height: 48px; border-radius: 12px;
            background: rgba(201,146,85,0.12); color: var(--color-amber);
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; margin-bottom: 16px;
        }
        .apply-list { list-style: none; }
        .apply-list li {
            position: relative; padding: 8px 0 8px 26px;
            border-bottom: 1px dashed var(--color-border); font-size: 14px;
            color: var(--color-secondary);
        }
        .apply-list li::before {
            content: ''; position: absolute; left: 0; top: 16px;
            width: 10px; height: 10px; border-radius: 50%;
            background: rgba(201,146,85,0.2); border: 2px solid var(--color-amber);
        }
        .faq-item { border-bottom: 1px solid var(--color-border); }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            padding: 22px 0; font-size: 17px; font-weight: 600; cursor: pointer;
            transition: color 0.2s; color: var(--color-body);
        }
        .faq-question:hover { color: var(--color-amber); }
        .faq-icon {
            width: 28px; height: 28px; border-radius: 50%;
            border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center;
            font-size: 14px; transition: all 0.3s; color: var(--color-body);
            flex-shrink: 0; margin-left: 16px;
        }
        .faq-item.open .faq-icon { transform: rotate(45deg); color: var(--color-amber); border-color: var(--color-amber); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
        .faq-item.open .faq-answer { max-height: 400px; }
        .faq-answer p { padding: 0 40px 22px 0; font-size: 15px; color: var(--color-secondary); line-height: 1.7; }
        .footer-heading { font-size: 16px; font-weight: 600; margin-bottom: 14px; }
        .footer-link { font-size: 14px; color: rgba(255,255,255,0.5); transition: all 0.2s; display: inline-block; }
        .footer-link:hover { color: var(--color-amber); transform: translateX(2px); }
        .mobile-tab {
            position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
            background: #fff; border-top: 1px solid var(--color-border);
            display: flex; height: 64px; padding-bottom: env(safe-area-inset-bottom);
        }
        .mobile-tab-item {
            flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
            gap: 3px; font-size: 12px; color: var(--color-muted); transition: all 0.2s;
        }
        .mobile-tab-item.active { color: var(--color-amber); }
        .mobile-tab-item.active span:last-child { color: var(--color-body); font-weight: 500; }
        .mobile-tab-item:active { transform: scale(0.98); }
        @media (min-width: 768px) { .mobile-tab { display: none; } }
        .section-pad { padding: 96px 0; }
        @media (max-width: 767px) { .section-pad { padding: 64px 0; } }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(245,244,241,0.95) 0%, rgba(245,244,241,0.90) 55%, rgba(245,244,241,0.40) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover; background-position: center;
        }
        .cta-bg {
            background-image: linear-gradient(rgba(28,29,33,0.93), rgba(28,29,33,0.93)), url('/assets/images/backpic/back-3.webp');
            background-size: cover; background-position: center;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(12px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade-up { animation: fadeInUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        @keyframes breathe {
            0% { box-shadow: 0 0 0 rgba(201,146,85,0); }
            50% { box-shadow: 0 0 24px rgba(201,146,85,0.45); }
            100% { box-shadow: 0 0 0 rgba(201,146,85,0); }
        }
        .btn-breathe { animation: breathe 2s ease infinite; }
        .reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .reveal.visible { opacity: 1; transform: translateY(0); }
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
            .reveal { opacity: 1 !important; transform: none !important; }
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 36px; font-weight: 800; color: rgba(28,29,33,0.1);
            line-height: 1;
        }
        .step-card {
            background: #fff; border-radius: 16px; padding: 28px 24px;
            border: 1px solid var(--color-border);
            transition: all 0.3s;
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .step-card h3 { font-size: 18px; font-weight: 600; margin: 12px 0 8px; }
        .step-card p { font-size: 14px; color: var(--color-secondary); }
        .mono { font-family: var(--font-mono); }

/* roulang page: category3 */
:root {
            --graphite: #1C1D21;
            --amber: #C99255;
            --warm: #F5F4F1;
            --mist: #E9E8E4;
            --text-main: #1C1D21;
            --text-secondary: #5B5B5F;
            --text-muted: #9A9A9F;
            --border: #E4E2DE;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --shadow-sm: 0 2px 8px rgba(28, 29, 33, 0.06);
            --shadow-lg: 0 12px 28px rgba(28, 29, 33, 0.12);
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

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

        body {
            margin: 0;
            background: var(--warm);
            color: var(--text-main);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 17px;
            line-height: 1.8;
            padding-bottom: 64px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        .container-site {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }

        @media (min-width: 768px) {
            .container-site {
                padding: 0 32px;
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(245, 244, 241, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 4px 16px rgba(28, 29, 33, 0.05);
            border-bottom-color: rgba(228, 226, 222, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 4px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            background: var(--amber);
            border-radius: 2px;
            transform: translateX(-50%);
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--text-main);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--text-main);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
            background: var(--amber);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--amber);
            color: var(--graphite);
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            padding: 12px 24px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            background: #d4a469;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201, 146, 85, 0.3);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            border-radius: 10px;
            padding: 12px 24px;
            border: 1px solid rgba(255, 255, 255, 0.45);
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: var(--amber);
            color: var(--amber);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .hero-section {
            position: relative;
            padding: 140px 0 90px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: -10px 0 -10px 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(28, 29, 33, 0.92) 12%, rgba(28, 29, 33, 0.72) 48%, rgba(28, 29, 33, 0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            color: #fff;
        }

        .hero-anim {
            animation: fadeInUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
        }

        .hero-anim-1 {
            animation-delay: 0.1s;
        }

        .hero-anim-2 {
            animation-delay: 0.22s;
        }

        .hero-anim-3 {
            animation-delay: 0.34s;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.85);
        }

        .hero-meta {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 520px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            padding-top: 28px;
            margin-top: 40px;
        }

        .hero-meta-item .num {
            font-family: "Inter", "DIN Alternate", "JetBrains Mono", monospace;
            font-size: 30px;
            font-weight: 800;
            color: var(--amber);
            line-height: 1.2;
        }

        .hero-meta-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .section-padding {
            padding: 96px 0;
        }

        @media (max-width: 767px) {
            .section-padding {
                padding: 64px 0;
            }
            .hero-section {
                padding: 120px 0 64px;
            }
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            font-family: "JetBrains Mono", "Courier New", monospace;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--amber);
            background: rgba(201, 146, 85, 0.1);
            border-radius: 6px;
            padding: 4px 10px;
            margin-bottom: 10px;
        }

        .card-product {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: block;
        }

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

        .card-product:active {
            transform: scale(0.98);
        }

        .card-product .thumb {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }

        .card-product .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.7s ease;
        }

        .card-product:hover .thumb img {
            transform: scale(1.04);
        }

        .card-product .body {
            padding: 24px;
        }

        .card-product .model {
            font-family: "JetBrains Mono", "Courier New", monospace;
            font-size: 12px;
            color: var(--amber);
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }

        .card-product h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .card-product p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .tag-badge {
            display: inline-block;
            font-size: 12px;
            color: var(--text-secondary);
            background: var(--warm);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 4px 10px;
            margin-right: 6px;
            margin-bottom: 6px;
            font-family: "JetBrains Mono", "Courier New", monospace;
        }

        .scene-card {
            background: #fff;
            border-radius: 16px;
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

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

        .scene-card .icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(201, 146, 85, 0.12);
            color: var(--amber);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .scene-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .scene-card .scene-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .step-card {
            text-align: center;
            padding: 36px 24px;
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
        }

        .step-num {
            font-family: "JetBrains Mono", "Courier New", monospace;
            font-size: 40px;
            font-weight: 700;
            color: #D8D6D0;
            line-height: 1;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 8px;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .faq-q:hover {
            color: var(--amber);
        }

        .faq-q .icon {
            font-size: 20px;
            font-weight: 300;
            color: var(--amber);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q .icon {
            transform: rotate(45deg);
        }

        .faq-a {
            display: none;
            padding: 0 8px 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 680px;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        .cta-section {
            background: var(--graphite);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: rgba(201, 146, 85, 0.15);
            border-radius: 50%;
            filter: blur(80px);
        }

        .cta-badge {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            padding: 6px 16px;
            transition: var(--transition);
        }

        .cta-badge:hover {
            border-color: var(--amber);
            color: var(--amber);
        }

        .btn-breath {
            animation: breath 2s ease-in-out infinite;
        }

        @keyframes breath {
            0% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
            50% {
                box-shadow: 0 0 24px rgba(201, 146, 85, 0.45);
            }
            100% {
                box-shadow: 0 0 0 rgba(201, 146, 85, 0);
            }
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }

        .footer-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-link:hover {
            color: var(--amber);
        }

        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            height: 64px;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            display: flex;
            align-items: stretch;
            box-shadow: 0 -2px 12px rgba(28, 29, 33, 0.04);
        }

        @media (min-width: 768px) {
            .mobile-tab-bar {
                display: none;
            }
            body {
                padding-bottom: 0;
            }
        }

        .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            color: #9A9A9F;
            transition: var(--transition);
            position: relative;
        }

        .tab-item .tab-icon {
            font-size: 20px;
            line-height: 1;
            transition: var(--transition);
        }

        .tab-item .tab-label {
            font-size: 11px;
            line-height: 1.2;
            white-space: nowrap;
            font-weight: 500;
        }

        .tab-item:active {
            transform: scale(0.96);
        }

        .tab-item.active {
            color: var(--amber);
        }

        .tab-item.active .tab-label {
            color: var(--graphite);
            font-weight: 600;
        }

        .tab-item.active::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 3px;
            background: var(--amber);
            border-radius: 0 0 4px 4px;
        }

        .mobile-header-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(28, 29, 33, 0.06);
            color: var(--graphite);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: var(--transition);
        }

        .mobile-header-btn:hover {
            background: rgba(201, 146, 85, 0.18);
            color: var(--amber);
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }