/* roulang page: index */
:root {
            --color-bg: #0B0C10;
            --color-panel: #14161B;
            --color-card: #1B1E24;
            --color-primary: #C9A86A;
            --color-secondary: #9AA3AF;
            --color-accent: #5EEAD4;
            --color-positive: #34D399;
            --color-negative: #F87171;
            --color-border: rgba(201, 168, 106, 0.16);
            --color-border-strong: rgba(201, 168, 106, 0.35);
            --color-text: #F5F3EE;
            --color-text-muted: #9AA3AF;
            --color-text-dim: #6B7280;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(94, 234, 212, 0.12);
            --shadow-gold: 0 8px 32px rgba(201, 168, 106, 0.18);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-num: 'Bahnschrift', 'DIN Alternate', 'Roboto Mono', 'PingFang SC', monospace;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --section-space: 96px;
            --section-space-md: 64px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-spring: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #E8D5A8;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: var(--color-text);
            background-color: var(--color-panel);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            transition: all var(--transition-fast);
            width: 100%;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.12);
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--color-text-dim);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(11, 12, 16, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: background-color var(--transition-fast);
        }
        .site-header.scrolled {
            background-color: rgba(11, 12, 16, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.06em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            border-radius: var(--radius-sm);
            color: #0B0C10;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .header-logo a {
            color: var(--color-text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .header-logo a:hover {
            color: var(--color-primary);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
            transition: all var(--transition-fast);
        }
        .header-nav a:hover {
            color: var(--color-text);
            background-color: rgba(201, 168, 106, 0.06);
        }
        .header-nav a.active {
            color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.1);
            font-weight: 600;
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.92rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #0B0C10;
        }
        .btn-primary:hover {
            background-color: #E8D5A8;
            color: #0B0C10;
            box-shadow: var(--shadow-gold);
            transform: translateY(-1px) scale(1.01);
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.99);
        }
        .btn-outline {
            background-color: transparent;
            color: var(--color-text);
            border: 1px solid var(--color-border-strong);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background-color: rgba(94, 234, 212, 0.06);
            box-shadow: var(--shadow-glow);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1rem;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .hamburger:hover {
            border-color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.06);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(11, 12, 16, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            padding: 24px;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
            border-top: 1px solid var(--color-border);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            border-bottom: 1px solid rgba(201, 168, 106, 0.06);
            transition: all var(--transition-fast);
        }
        .mobile-nav a:hover {
            color: var(--color-text);
            background-color: rgba(201, 168, 106, 0.06);
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.1);
            font-weight: 600;
        }
        .mobile-nav .mobile-cta {
            margin-top: 16px;
            padding: 16px 20px;
            text-align: center;
            background-color: var(--color-primary);
            color: #0B0C10;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        /* ========== SECTION BASE ========== */
        section {
            padding: var(--section-space) 0;
        }
        section:nth-child(even) {
            background-color: var(--color-panel);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.08);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 6px 16px;
            margin-bottom: 16px;
        }
        .section-label::before {
            content: '';
            width: 6px;
            height: 6px;
            background-color: var(--color-primary);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .section-title {
            font-family: var(--font-title);
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .section-title .gold-highlight {
            color: var(--color-primary);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 680px;
            line-height: 1.75;
            margin-bottom: 40px;
        }
        .section-desc strong {
            color: var(--color-text);
            font-weight: 600;
        }

        /* ========== HERO BENTO ========== */
        .hero-section {
            padding: 56px 0;
            position: relative;
            background-color: var(--color-bg);
            overflow: hidden;
        }
        .hero-background {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero-background::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
        }
        .hero-background::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 12, 16, 0.65) 0%, rgba(11, 12, 16, 0.85) 60%, var(--color-bg) 100%);
        }
        .hero-inner {
            position: relative;
            z-index: 1;
        }
        .hero-bento {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: 16px;
            margin-top: 24px;
        }
        .hero-main {
            grid-row: span 2;
            background-color: rgba(20, 22, 27, 0.85);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 48px 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 420px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .hero-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            transform: scaleX(0);
            transform-origin: left;
            animation: goldLineIn 1.2s var(--transition-spring) 0.4s forwards;
        }
        @keyframes goldLineIn {
            to {
                transform: scaleX(1);
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            background-color: rgba(94, 234, 212, 0.08);
            border: 1px solid rgba(94, 234, 212, 0.22);
            border-radius: 20px;
            padding: 6px 16px;
            margin-bottom: 24px;
            width: fit-content;
        }
        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background-color: var(--color-accent);
            border-radius: 50%;
            animation: pulse 2s ease-in-out infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.3);
            }
        }
        .hero-title {
            font-family: var(--font-title);
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--color-text);
        }
        .hero-title .accent {
            color: var(--color-primary);
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            max-width: 540px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-metric-card {
            background-color: rgba(27, 30, 36, 0.9);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 110px;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .hero-metric-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        .metric-label {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }
        .metric-value {
            font-family: var(--font-num);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.1;
        }
        .metric-value .suffix {
            font-size: 1.2rem;
            color: var(--color-secondary);
        }
        .metric-change {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-positive);
            margin-top: 4px;
        }

        .hero-cta-bar {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, rgba(201, 168, 106, 0.14) 0%, rgba(20, 22, 27, 0.95) 60%);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-md);
            padding: 20px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .hero-cta-bar .cta-text {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
        }
        .hero-cta-bar .cta-highlight {
            color: var(--color-primary);
            font-weight: 700;
        }

        /* ========== SERVICES MATRIX ========== */
        .services-section {
            background-color: var(--color-panel);
        }
        .services-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .service-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .service-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .service-card.wide {
            grid-row: span 2;
            min-height: 540px;
        }
        .service-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .service-card.wide .card-image {
            aspect-ratio: 16/7;
        }
        .service-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .service-card:hover .card-image img {
            transform: scale(1.04);
        }
        .service-card .card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 12, 16, 0.6) 100%);
            pointer-events: none;
        }
        .service-card .card-body {
            padding: 28px 28px 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.08);
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 4px 12px;
            margin-bottom: 14px;
            width: fit-content;
        }
        .card-title {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .card-desc {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-scenario {
            font-size: 0.84rem;
            color: var(--color-text-dim);
            margin-bottom: 8px;
            padding: 10px 14px;
            background-color: rgba(201, 168, 106, 0.04);
            border-radius: var(--radius-sm);
            border-left: 2px solid var(--color-primary);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-top: auto;
            padding-top: 12px;
            transition: all var(--transition-fast);
        }
        .card-link:hover {
            color: #8EF5E2;
            gap: 12px;
        }
        .card-link .arrow {
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }

        .services-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .services-strip {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            margin-top: 4px;
        }
        .strip-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.84rem;
            color: var(--color-text-muted);
        }
        .strip-item .num {
            font-family: var(--font-num);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
        }

        /* ========== COMPARISON ========== */
        .comparison-section {
            background-color: var(--color-bg);
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        .comparison-panel {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .comparison-panel:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
        }
        .comparison-panel.traditional {
            border-left: 4px solid var(--color-negative);
        }
        .comparison-panel.star {
            border-left: 4px solid var(--color-primary);
            background-color: rgba(20, 22, 27, 0.9);
        }
        .comparison-panel .panel-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
            padding: 6px 16px;
            border-radius: 16px;
        }
        .comparison-panel.traditional .panel-badge {
            color: var(--color-negative);
            background-color: rgba(248, 113, 113, 0.08);
            border: 1px solid rgba(248, 113, 113, 0.2);
        }
        .comparison-panel.star .panel-badge {
            color: var(--color-primary);
            background-color: rgba(201, 168, 106, 0.08);
            border: 1px solid var(--color-border);
        }
        .comparison-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .comparison-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            background-color: rgba(255, 255, 255, 0.02);
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .comparison-list li .label {
            flex: 1;
            font-weight: 500;
        }
        .comparison-list li .value {
            font-weight: 600;
            color: var(--color-text);
        }
        .comparison-panel.star .comparison-list li .value.highlight {
            color: var(--color-primary);
        }
        .comparison-panel.star .comparison-list li .value.positive {
            color: var(--color-positive);
        }
        .comparison-panel.traditional .comparison-list li .value.negative {
            color: var(--color-negative);
        }
        .comparison-delta {
            grid-column: 1 / -1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background-color: var(--color-card);
            border: 1px dashed var(--color-border-strong);
            border-radius: var(--radius-md);
            padding: 20px 28px;
        }
        .comparison-delta .delta-text {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .comparison-delta .delta-text strong {
            color: var(--color-primary);
            font-size: 1.1rem;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--color-panel);
        }
        .faq-container {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--color-border-strong);
        }
        .faq-item.open {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-gold);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            background-color: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(201, 168, 106, 0.1);
            color: var(--color-primary);
            font-size: 1.2rem;
            transition: transform var(--transition-smooth);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: rgba(201, 168, 106, 0.2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-spring), padding var(--transition-smooth);
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.75;
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background-color: var(--color-bg);
        }
        .cta-form-panel {
            background-color: var(--color-panel);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-xl);
            padding: 48px 44px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .cta-form-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(201, 168, 106, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-info h3 {
            font-family: var(--font-title);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-info p {
            font-size: 1rem;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .cta-benefits {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-benefits li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .cta-benefits li .check {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background-color: rgba(52, 211, 153, 0.12);
            color: var(--color-positive);
            font-weight: 700;
            font-size: 0.8rem;
            margin-top: 2px;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-field label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239AA3AF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 40px;
        }
        .form-submit {
            width: 100%;
            padding: 16px 32px;
            font-size: 1rem;
            font-weight: 700;
            background-color: var(--color-primary);
            color: #0B0C10;
            border-radius: var(--radius-sm);
            transition: all var(--transition-smooth);
            letter-spacing: 0.04em;
        }
        .form-submit:hover {
            background-color: #E8D5A8;
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
        }
        .form-note {
            font-size: 0.78rem;
            color: var(--color-text-dim);
            text-align: center;
            margin-top: 8px;
        }

        /* ========== NEWS / INSIGHTS ========== */
        .insights-section {
            background-color: var(--color-panel);
        }
        .insights-layout {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .insights-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .insights-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            font-size: 0.92rem;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            border-bottom: 1px solid rgba(201, 168, 106, 0.06);
            transition: all var(--transition-fast);
        }
        .insights-list a:hover {
            color: var(--color-text);
            background-color: rgba(201, 168, 106, 0.05);
            padding-left: 24px;
        }
        .insights-list a .date {
            font-size: 0.78rem;
            color: var(--color-text-dim);
            font-family: var(--font-num);
            flex-shrink: 0;
        }
        .insights-feature {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .insights-feature:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .insights-feature .feature-image {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .insights-feature .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .insights-feature:hover .feature-image img {
            transform: scale(1.03);
        }
        .insights-feature .feature-body {
            padding: 20px 24px;
        }
        .insights-feature .feature-body h4 {
            font-family: var(--font-title);
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .insights-feature .feature-body p {
            font-size: 0.84rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-section {
            background-color: var(--color-bg);
        }
        .testimonials-bubbles {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .testimonial-bubble {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .testimonial-bubble:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .testimonial-bubble::before {
            content: '"';
            position: absolute;
            top: 8px;
            left: 20px;
            font-size: 4rem;
            color: rgba(201, 168, 106, 0.15);
            font-family: serif;
            line-height: 1;
            pointer-events: none;
        }
        .testimonial-bubble .quote {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .testimonial-bubble .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-bubble .avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), #8E7A4E);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #0B0C10;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .testimonial-bubble .author-name {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-text);
        }
        .testimonial-bubble .author-role {
            font-size: 0.75rem;
            color: var(--color-text-dim);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: #08090C;
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
            color: var(--color-text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand p {
            font-size: 0.84rem;
            line-height: 1.7;
            color: var(--color-text-dim);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.86rem;
            color: var(--color-text-muted);
            padding: 6px 0;
            transition: all var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(201, 168, 106, 0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.78rem;
            color: var(--color-text-dim);
        }
        .footer-bottom a {
            color: var(--color-text-muted);
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1280px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }

        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }
            .hero-bento {
                grid-template-columns: 1.4fr 1fr;
                gap: 12px;
            }
            .hero-main {
                padding: 36px 28px;
                min-height: 360px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-metric-card {
                padding: 20px 22px;
                min-height: 90px;
            }
            .metric-value {
                font-size: 2rem;
            }
            .services-grid {
                grid-template-columns: 1fr 1fr;
            }
            .testimonials-bubbles {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 62px;
                --section-space: 56px;
            }
            .header-nav {
                display: none;
            }
            .header-cta .btn-outline {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero-bento {
                grid-template-columns: 1fr;
                grid-template-rows: auto auto auto auto;
                gap: 12px;
            }
            .hero-main {
                grid-row: auto;
                min-height: auto;
                padding: 28px 24px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-metric-card {
                min-height: 80px;
                padding: 18px 20px;
            }
            .metric-value {
                font-size: 1.7rem;
            }
            .hero-cta-bar {
                grid-column: auto;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-card.wide {
                grid-row: auto;
                min-height: auto;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-panel {
                padding: 24px 20px;
            }
            .cta-form-panel {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 28px 24px;
            }
            .insights-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .testimonials-bubbles {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 44px;
                --header-height: 56px;
            }
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-metric-card {
                min-height: 70px;
                padding: 14px 16px;
            }
            .metric-value {
                font-size: 1.4rem;
            }
            .form-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn {
                padding: 10px 22px;
                font-size: 0.85rem;
            }
            .btn-lg {
                padding: 14px 28px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

/* roulang page: category2 */
:root {
  --color-bg: #0B0C10;
  --color-panel: #14161B;
  --color-card: #1B1E24;
  --color-primary: #C9A86A;
  --color-primary-light: #E8D5A8;
  --color-secondary: #9AA3AF;
  --color-accent: #5EEAD4;
  --color-positive: #34D399;
  --color-negative: #F87171;
  --color-border: rgba(201, 168, 106, 0.16);
  --color-border-strong: rgba(201, 168, 106, 0.35);
  --color-text: #F5F3EE;
  --color-text-muted: #9AA3AF;
  --color-text-dim: #6B7280;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-card: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(94, 234, 212, 0.12);
  --shadow-gold: 0 8px 32px rgba(201, 168, 106, 0.18);
  --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-num: 'Bahnschrift', 'DIN Alternate', 'Roboto Mono', 'PingFang SC', monospace;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
  --section-space: 80px;
  --section-space-md: 56px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-light);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  font-size: inherit;
  transition: all var(--transition-fast);
  background: none;
}
input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: var(--color-text);
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: all var(--transition-fast);
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.12);
}
input::placeholder, textarea::placeholder {
  color: var(--color-text-dim);
}
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-fast);
}
.site-header.scrolled {
  background-color: rgba(11, 12, 16, 0.98);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}
.header-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #C9A86A, #E8D5A8);
  border-radius: var(--radius-sm);
  color: #0B0C10;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-shrink: 0;
}
.header-nav a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}
.header-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-smooth);
  border-radius: 2px;
}
.header-nav a:hover {
  color: var(--color-text);
}
.header-nav a:hover::after {
  width: 100%;
}
.header-nav a.active {
  color: var(--color-primary);
}
.header-nav a.active::after {
  width: 100%;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #C9A86A, #D8BD87);
  color: #0B0C10;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.header-cta:hover {
  background: linear-gradient(135deg, #D8BD87, #E8D5A8);
  color: #0B0C10;
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--color-border);
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition-fast);
}
/* Breadcrumb */
.breadcrumb-bar {
  background-color: var(--color-panel);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.breadcrumb a:hover {
  color: var(--color-primary);
}
.breadcrumb .sep {
  color: var(--color-text-dim);
  user-select: none;
}
.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 600;
}
.breadcrumb .back-link {
  margin-left: auto;
  color: var(--color-accent);
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}
.breadcrumb .back-link:hover {
  color: #7DF5E2;
}
/* Short Hero */
.short-hero {
  position: relative;
  padding: 64px 0 72px;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  min-height: 360px;
  display: flex;
  align-items: center;
}
.short-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 12, 16, 0.82) 0%, rgba(11, 12, 16, 0.9) 60%, rgba(11, 12, 16, 0.95) 100%);
}
.short-hero .container {
  position: relative;
  z-index: 2;
}
.short-hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201, 168, 106, 0.12);
  border: 1px solid var(--color-border-strong);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.82rem;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.short-hero .hero-tag .dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.short-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.25;
}
.short-hero h1 .gold {
  color: var(--color-primary);
  position: relative;
}
.short-hero .hero-sub {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  line-height: 1.8;
}
/* Section Common */
.section {
  padding: var(--section-space) 0;
}
.section-header {
  margin-bottom: 44px;
}
.section-header .section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}
.section-header .section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}
.section-header h2 {
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
  line-height: 1.3;
}
.section-header p {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-top: 12px;
  line-height: 1.75;
}
/* Asymmetric Card Matrix */
.resource-matrix {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 24px;
}
.matrix-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 380px;
}
.matrix-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.matrix-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.matrix-card:hover::before {
  opacity: 1;
}
.matrix-card .card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
}
.matrix-card .card-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  background: rgba(94, 234, 212, 0.1);
  border: 1px solid rgba(94, 234, 212, 0.25);
  border-radius: 100px;
  padding: 4px 12px;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  align-self: flex-start;
}
.matrix-card h3 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: 0.03em;
  line-height: 1.35;
}
.matrix-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
  flex-grow: 1;
}
.matrix-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}
.matrix-card .card-link:hover {
  color: var(--color-accent);
  gap: 12px;
}
.matrix-card.wide-card {
  grid-column: span 1;
}
.matrix-card.wide-card .card-img {
  height: 240px;
}
.matrix-card .resource-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  flex-grow: 1;
}
.matrix-card .resource-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.matrix-card .resource-list li:last-child {
  border-bottom: none;
}
.matrix-card .resource-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 9px;
}
/* Horizontal Metrics Bar */
.metrics-bar {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 32px;
  position: relative;
  overflow: hidden;
}
.metrics-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), transparent);
  opacity: 0.6;
}
.metric-item {
  text-align: left;
}
.metric-item .metric-value {
  font-family: var(--font-num);
  font-size: 2.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.metric-item .metric-value .unit {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}
.metric-item .metric-label {
  font-size: 0.87rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}
/* CTA Section */
.cta-section {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201, 168, 106, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-section .cta-left {
  flex: 1;
  min-width: 0;
}
.cta-section .cta-left h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.cta-section .cta-left p {
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.75;
}
.cta-section .cta-actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
  align-items: center;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #C9A86A, #D8BD87);
  color: #0B0C10;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #D8BD87, #E8D5A8);
  color: #0B0C10;
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(201, 168, 106, 0.3);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  white-space: nowrap;
  border: 1px solid var(--color-border-strong);
  transition: all var(--transition-fast);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}
/* Footer */
.site-footer {
  background: var(--color-panel);
  border-top: 1px solid var(--color-border);
  padding: 56px 0 28px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}
.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 340px;
}
.footer-col h4 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.06em;
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  padding: 6px 0;
  transition: all var(--transition-fast);
}
.footer-col a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--color-text-dim);
}
.footer-bottom a {
  color: var(--color-text-dim);
  transition: color var(--transition-fast);
}
.footer-bottom a:hover {
  color: var(--color-primary);
}
/* Responsive */
@media (max-width: 1024px) {
  .resource-matrix {
    grid-template-columns: 1fr 1fr;
  }
  .resource-matrix .wide-card {
    grid-column: span 2;
  }
  .metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    padding: 28px 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  :root {
    --header-height: 62px;
    --section-space: 56px;
  }
  .header-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-panel);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  }
  .header-nav.open {
    display: flex;
  }
  .header-nav a {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 1rem;
  }
  .header-nav a:last-child {
    border-bottom: none;
  }
  .header-cta {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .short-hero {
    padding: 48px 0 56px;
    min-height: 300px;
  }
  .resource-matrix {
    grid-template-columns: 1fr;
  }
  .resource-matrix .wide-card {
    grid-column: span 1;
  }
  .matrix-card {
    min-height: auto;
  }
  .metrics-bar {
    grid-template-columns: 1fr 1fr;
    padding: 24px 20px;
    gap: 20px;
  }
  .cta-section {
    flex-direction: column;
    padding: 36px 24px;
    align-items: flex-start;
  }
  .cta-section .cta-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }
  .btn-primary, .btn-secondary {
    justify-content: center;
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .breadcrumb .back-link {
    margin-left: 0;
  }
  .breadcrumb {
    gap: 6px;
  }
}
@media (max-width: 520px) {
  :root {
    --section-space: 44px;
    --header-height: 56px;
  }
  .container {
    padding: 0 16px;
  }
  .metrics-bar {
    grid-template-columns: 1fr;
    padding: 20px 16px;
  }
  .metric-item .metric-value {
    font-size: 1.8rem;
  }
  .short-hero h1 {
    font-size: 1.6rem;
  }
  .short-hero .hero-sub {
    font-size: 0.92rem;
  }
  .matrix-card {
    padding: 20px;
  }
  .matrix-card .card-img {
    height: 160px;
  }
  .matrix-card.wide-card .card-img {
    height: 180px;
  }
}

/* roulang page: category1 */
:root {
            --color-bg: #0B0C10;
            --color-panel: #14161B;
            --color-card: #1B1E24;
            --color-primary: #C9A86A;
            --color-secondary: #9AA3AF;
            --color-accent: #5EEAD4;
            --color-positive: #34D399;
            --color-negative: #F87171;
            --color-border: rgba(201, 168, 106, 0.16);
            --color-border-strong: rgba(201, 168, 106, 0.35);
            --color-text: #F5F3EE;
            --color-text-muted: #9AA3AF;
            --color-text-dim: #6B7280;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(94, 234, 212, 0.12);
            --shadow-gold: 0 8px 32px rgba(201, 168, 106, 0.18);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-num: 'Bahnschrift', 'DIN Alternate', 'Roboto Mono', 'PingFang SC', monospace;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --section-space: 96px;
            --section-space-md: 64px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-spring: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        }

        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 62px;
                --section-space: 56px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 44px;
                --header-height: 56px;
            }
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

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

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

        a:hover {
            color: #E8D5A8;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: var(--color-text);
            background-color: var(--color-panel);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            transition: all var(--transition-fast);
            width: 100%;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.12);
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--color-text-dim);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(11, 12, 16, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .site-header.scrolled {
            background-color: rgba(11, 12, 16, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.06em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            border-radius: var(--radius-sm);
            color: #0B0C10;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
            padding: 0;
            list-style: none;
            flex-wrap: wrap;
        }

        .header-nav a {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .header-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-smooth);
            border-radius: 1px;
        }

        .header-nav a:hover {
            color: var(--color-text);
        }

        .header-nav a:hover::after,
        .header-nav a.active::after {
            width: 100%;
        }

        .header-nav a.active {
            color: var(--color-primary);
        }

        .header-cta {
            background: var(--color-primary);
            color: #0B0C10;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .header-cta:hover {
            background: #E8D5A8;
            color: #0B0C10;
            transform: scale(1.03);
        }

        .header-mobile-toggle {
            display: none;
            background: none;
            color: var(--color-text);
            font-size: 1.5rem;
            line-height: 1;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            border-bottom: 1px solid var(--color-border);
            background-color: rgba(11, 12, 16, 0.7);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-dim);
            flex-wrap: wrap;
            margin: 0;
            padding: 0;
            list-style: none;
        }

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

        .breadcrumb li:not(:last-child)::after {
            content: '/';
            color: var(--color-text-dim);
            font-size: 0.8rem;
            margin-left: 4px;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .breadcrumb-return {
            margin-left: auto;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .breadcrumb-return:hover {
            color: var(--color-accent);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 440px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 12, 16, 0.78) 0%, rgba(11, 12, 16, 0.92) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: 60px;
            padding-bottom: 60px;
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 106, 0.12);
            border: 1px solid var(--color-border-strong);
            color: var(--color-primary);
            font-size: 0.82rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }

        .hero h1 {
            font-family: var(--font-title);
            font-size: clamp(2.2rem, 4vw, 3.5rem);
            color: var(--color-text);
            margin: 0 0 20px 0;
            line-height: 1.25;
            letter-spacing: 0.01em;
            font-weight: 700;
        }

        .hero h1 .gold-underline {
            position: relative;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .hero h1 .gold-underline::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px;
            animation: line-slide 0.8s ease-out 0.3s forwards;
        }

        @keyframes line-slide {
            to { width: 100%; }
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin: 0 0 32px 0;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            text-align: center;
            justify-content: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #0B0C10;
        }

        .btn-primary:hover {
            background: #E8D5A8;
            color: #0B0C10;
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
        }

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

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

        .btn-arrow {
            font-size: 0.85rem;
            transition: transform var(--transition-fast);
        }

        .btn:hover .btn-arrow {
            transform: translateX(4px);
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--color-border);
        }

        .hero-metric {
            text-align: left;
        }

        .hero-metric .metric-value {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .hero-metric .metric-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            letter-spacing: 0.03em;
        }

        /* ========== INSIGHTS MAIN ========== */
        .insights-section {
            padding: var(--section-space) 0;
            background-color: var(--color-bg);
        }

        .insights-layout {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 40px;
            align-items: start;
        }

        /* Filter Sidebar */
        .filter-sidebar {
            background: var(--color-panel);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            position: sticky;
            top: calc(var(--header-height) + 70px);
        }

        .filter-sidebar h3 {
            font-family: var(--font-title);
            font-size: 1.1rem;
            color: var(--color-text);
            margin: 0 0 16px 0;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
            letter-spacing: 0.03em;
        }

        .filter-group {
            margin-bottom: 20px;
        }

        .filter-group-label {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-text-dim);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }

        .filter-year-btn,
        .filter-tag-btn {
            display: block;
            width: 100%;
            text-align: left;
            padding: 10px 14px;
            background: transparent;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            color: var(--color-text-muted);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            margin-bottom: 4px;
        }

        .filter-year-btn:hover,
        .filter-tag-btn:hover {
            background: rgba(201, 168, 106, 0.08);
            color: var(--color-text);
        }

        .filter-year-btn.active,
        .filter-tag-btn.active {
            background: rgba(201, 168, 106, 0.15);
            border-color: var(--color-border-strong);
            color: var(--color-primary);
            font-weight: 500;
        }

        .filter-reset {
            width: 100%;
            padding: 10px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            margin-top: 8px;
        }

        .filter-reset:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        /* Insight Cards */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .insight-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }

        .insight-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-gold), var(--shadow-card);
        }

        .insight-card-header {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

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

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

        .insight-card-header::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 12, 16, 0.85) 100%);
        }

        .insight-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 1;
            background: rgba(11, 12, 16, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid var(--color-border-strong);
            color: var(--color-primary);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.06em;
        }

        .insight-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .insight-card-title {
            font-family: var(--font-title);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 10px 0;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

        .insight-card-desc {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 16px 0;
            flex: 1;
        }

        .insight-card-metrics {
            display: flex;
            gap: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--color-border);
            margin-bottom: 16px;
        }

        .insight-metric {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .insight-metric-value {
            font-family: var(--font-num);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1;
        }

        .insight-metric-value.positive {
            color: var(--color-positive);
        }

        .insight-metric-value.negative {
            color: var(--color-negative);
        }

        .insight-metric-label {
            font-size: 0.75rem;
            color: var(--color-text-dim);
            letter-spacing: 0.04em;
        }

        .insight-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            align-self: flex-start;
        }

        .insight-card-link .arrow {
            transition: transform var(--transition-fast);
        }

        .insight-card:hover .insight-card-link .arrow {
            transform: translateX(4px);
        }

        .insight-card-link:hover {
            color: var(--color-accent);
        }

        .insight-year-tag {
            font-size: 0.72rem;
            color: var(--color-text-dim);
            letter-spacing: 0.05em;
            margin-top: 8px;
        }

        .insights-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--color-panel);
            border: 1px dashed var(--color-border-strong);
            border-radius: var(--radius-md);
            color: var(--color-text-muted);
        }

        .insights-empty p {
            margin: 0;
            font-size: 1rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: var(--section-space-md) 0;
            background-color: var(--color-panel);
            border-top: 1px solid var(--color-border);
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 40px;
            align-items: center;
        }

        .cta-inner h2 {
            font-family: var(--font-title);
            font-size: 1.8rem;
            color: var(--color-text);
            margin: 0 0 12px 0;
            letter-spacing: 0.02em;
        }

        .cta-inner p {
            color: var(--color-text-muted);
            margin: 0;
            font-size: 1rem;
            line-height: 1.7;
            max-width: 560px;
        }

        .cta-inner .btn {
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: #0A0B0F;
            border-top: 1px solid var(--color-border);
            padding: 60px 0 30px;
        }

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

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

        .footer-brand .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            border-radius: var(--radius-sm);
            color: #0B0C10;
            font-weight: 800;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 0.95rem;
            color: var(--color-text);
            margin: 0 0 16px 0;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            color: var(--color-text-muted);
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            font-size: 0.82rem;
            color: var(--color-text-dim);
        }

        .footer-bottom a {
            color: var(--color-text-muted);
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
            }

            .insights-layout {
                grid-template-columns: 220px 1fr;
                gap: 28px;
            }

            .insights-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(11, 12, 16, 0.98);
                border-bottom: 1px solid var(--color-border);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px;
                z-index: 999;
            }

            .header-nav.open {
                display: flex;
            }

            .header-nav a {
                padding: 12px 0;
                font-size: 1rem;
                border-bottom: 1px solid var(--color-border);
                width: 100%;
            }

            .header-nav a:last-child {
                border-bottom: none;
            }

            .header-mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .header-cta {
                font-size: 0.82rem;
                padding: 8px 14px;
            }

            .breadcrumb-wrap {
                padding: 10px 0;
            }

            .breadcrumb {
                font-size: 0.8rem;
            }

            .breadcrumb-return {
                display: none;
            }

            .hero {
                min-height: auto;
                padding: 40px 0;
            }

            .hero .container {
                padding-top: 32px;
                padding-bottom: 32px;
            }

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                margin-top: 28px;
                padding-top: 24px;
            }

            .insights-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .filter-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
                padding: 18px;
            }

            .filter-sidebar h3 {
                grid-column: 1 / -1;
            }

            .filter-group {
                margin-bottom: 0;
            }

            .filter-reset {
                margin-top: 0;
            }

            .insights-grid {
                grid-template-columns: 1fr;
            }

            .insight-card-header {
                height: 160px;
            }

            .cta-inner {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }

            .cta-inner p {
                margin: 0 auto;
            }

            .cta-inner .btn {
                justify-self: center;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-logo {
                font-size: 1.15rem;
            }

            .header-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .header-cta {
                font-size: 0.78rem;
                padding: 7px 12px;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .hero-metric .metric-value {
                font-size: 1.5rem;
            }

            .btn {
                padding: 12px 20px;
                font-size: 0.9rem;
            }

            .filter-sidebar {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .filter-sidebar h3 {
                grid-column: 1;
            }

            .insight-card-header {
                height: 140px;
            }

            .insight-card-body {
                padding: 16px 18px 20px;
            }

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

/* roulang page: category3 */
:root {
  --color-bg: #0B0C10;
  --color-panel: #14161B;
  --color-card: #1B1E24;
  --color-primary: #C9A86A;
  --color-secondary: #9AA3AF;
  --color-accent: #5EEAD4;
  --color-positive: #34D399;
  --color-negative: #F87171;
  --color-border: rgba(201, 168, 106, 0.16);
  --color-border-strong: rgba(201, 168, 106, 0.35);
  --color-text: #F5F3EE;
  --color-text-muted: #9AA3AF;
  --color-text-dim: #6B7280;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-card: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(94, 234, 212, 0.12);
  --shadow-gold: 0 8px 32px rgba(201, 168, 106, 0.18);
  --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-num: 'Bahnschrift', 'DIN Alternate', 'Roboto Mono', 'PingFang SC', monospace;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
  --section-space: 96px;
  --section-space-md: 64px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #E8D5A8;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

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

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  font-size: inherit;
  transition: all var(--transition-fast);
}

input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: var(--color-text);
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: all var(--transition-fast);
  width: 100%;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.12);
}
input::placeholder,
textarea::placeholder {
  color: var(--color-text-dim);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== HEADER ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-fast);
}
.site-header.scrolled {
  background-color: rgba(11, 12, 16, 0.98);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}
.header-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #C9A86A, #E8D5A8);
  border-radius: var(--radius-sm);
  color: #0B0C10;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.header-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.header-nav a:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  background-color: rgba(201, 168, 106, 0.06);
}
.header-nav a.active {
  color: var(--color-primary);
  border-color: var(--color-border-strong);
  background-color: rgba(201, 168, 106, 0.08);
  font-weight: 600;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #0B0C10;
  background: linear-gradient(135deg, #C9A86A, #E8D5A8);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}
.header-cta:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
  color: #0B0C10;
}
.header-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.header-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}
.header-burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.header-burger.open span:nth-child(2) {
  opacity: 0;
}
.header-burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== BREADCRUMB ========== */
.breadcrumb-bar {
  background-color: var(--color-panel);
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.breadcrumb a:hover {
  color: var(--color-primary);
}
.breadcrumb .separator {
  color: var(--color-text-dim);
  font-size: 0.7rem;
}
.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 600;
}
.breadcrumb .back-link {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: all var(--transition-fast);
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.breadcrumb .back-link:hover {
  border-color: var(--color-border-strong);
  background-color: rgba(201, 168, 106, 0.06);
  color: #E8D5A8;
}

/* ========== HERO ========== */
.case-hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  background-color: var(--color-panel);
  padding: 80px 0;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.case-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,12,16,0.75) 0%, rgba(11,12,16,0.88) 55%, rgba(11,12,16,0.96) 100%);
  z-index: 1;
}
.case-hero .container {
  position: relative;
  z-index: 2;
}
.case-hero-inner {
  max-width: 800px;
}
.case-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background-color: rgba(94, 234, 212, 0.08);
  border: 1px solid rgba(94, 234, 212, 0.25);
  border-radius: 20px;
  margin-bottom: 20px;
}
.case-hero-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(94,234,212,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(94,234,212,0); }
}
.case-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.case-hero h1 .gold-text {
  color: var(--color-primary);
  position: relative;
}
.case-hero h1 .gold-text::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), rgba(201,168,106,0.2));
  border-radius: 2px;
  animation: gold-line-in 0.8s var(--transition-spring) forwards;
}
@keyframes gold-line-in {
  from { width: 0; }
  to { width: 100%; }
}
.case-hero p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 620px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.case-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  background-color: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.hero-meta-item .meta-num {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.05rem;
}

/* ========== SECTION COMMON ========== */
.section {
  padding: var(--section-space-md) 0;
}
.section-title {
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title .title-accent {
  display: inline-block;
  width: 4px;
  height: 28px;
  background: linear-gradient(180deg, var(--color-primary), rgba(201,168,106,0.3));
  border-radius: 2px;
  flex-shrink: 0;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 700px;
  margin-bottom: 36px;
}

/* ========== CASE CARDS ========== */
.case-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.case-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-smooth);
  position: relative;
}
.case-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}
.case-card.reverse .case-image {
  order: 2;
}
.case-card.reverse .case-content {
  order: 1;
}
.case-image {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  background-color: var(--color-panel);
}
.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--transition-smooth);
}
.case-card:hover .case-image img {
  transform: scale(1.04);
}
.case-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,12,16,0.2) 0%, rgba(11,12,16,0) 50%);
  pointer-events: none;
}
.case-content {
  padding: 28px 24px 28px 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-card.reverse .case-content {
  padding: 28px 8px 28px 24px;
}
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.case-tag {
  display: inline-flex;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  background-color: rgba(201, 168, 106, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  letter-spacing: 0.05em;
}
.case-tag.tag-accent {
  color: var(--color-accent);
  background-color: rgba(94,234,212,0.08);
  border-color: rgba(94,234,212,0.25);
}
.case-content h3 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  letter-spacing: 0.02em;
}
.case-content p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  flex-grow: 1;
}
.case-result {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}
.case-result-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.case-result-item .result-num {
  font-family: var(--font-num);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-positive);
  letter-spacing: 0.02em;
}
.case-result-item .result-num.gold {
  color: var(--color-primary);
}
.case-result-item .result-label {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  letter-spacing: 0.04em;
}

/* ========== COMPARISON PANEL ========== */
.compare-panel {
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-card);
  margin-top: 12px;
}
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.compare-col {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-card);
}
.compare-col.highlight {
  border-color: var(--color-border-strong);
  background-color: rgba(201, 168, 106, 0.04);
}
.compare-col h4 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.compare-col.highlight h4 {
  color: var(--color-primary);
}
.compare-col h4 .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-dim);
  flex-shrink: 0;
}
.compare-col.highlight h4 .dot {
  background-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(201,168,106,0.5);
}
.compare-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(201,168,106,0.08);
  gap: 12px;
}
.compare-item:last-child {
  border-bottom: none;
}
.compare-item .compare-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.compare-item .compare-value {
  font-family: var(--font-num);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: right;
  white-space: nowrap;
}
.compare-col.highlight .compare-item .compare-value {
  color: var(--color-positive);
}
.compare-item .compare-value.warn {
  color: var(--color-negative);
}

/* ========== METRICS STRIP ========== */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.metric-box {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: all var(--transition-fast);
}
.metric-box:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-glow);
}
.metric-box .metric-num {
  font-family: var(--font-num);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.metric-box .metric-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ========== CTA FORM ========== */
.cta-section {
  background-color: var(--color-panel);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--section-space-md) 0;
}
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.cta-left h2 {
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.cta-left p {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.cta-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}
.cta-points li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #0B0C10;
  background-color: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.cta-form-panel {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.cta-form-panel .form-title {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.form-field input,
.form-field select,
.form-field textarea {
  font-size: 0.92rem;
}
.form-field textarea {
  min-height: 90px;
  resize: vertical;
}
.form-submit-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 700;
  color: #0B0C10;
  background: linear-gradient(135deg, #C9A86A, #E8D5A8);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  margin-top: 4px;
}
.form-submit-btn:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
  color: #0B0C10;
}
.form-submit-btn:active {
  transform: translateY(0);
  box-shadow: none;
}
.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  text-align: center;
  margin-top: 10px;
}

/* ========== FOOTER ========== */
.site-footer {
  background-color: var(--color-panel);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 360px;
}
.footer-col h4 {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 6px 0;
  transition: all var(--transition-fast);
}
.footer-col a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-dim);
  flex-wrap: wrap;
}
.footer-bottom a {
  color: var(--color-text-dim);
}
.footer-bottom a:hover {
  color: var(--color-primary);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .case-card {
    grid-template-columns: 1fr;
  }
  .case-card.reverse .case-image {
    order: 1;
  }
  .case-card.reverse .case-content {
    order: 2;
  }
  .case-content {
    padding: 24px;
  }
  .case-card.reverse .case-content {
    padding: 24px;
  }
  .case-image {
    min-height: 220px;
  }
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 62px;
    --section-space: 56px;
    --section-space-md: 44px;
  }
  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background-color: rgba(11, 12, 16, 0.98);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform 0.3s var(--transition-smooth);
    z-index: 999;
  }
  .header-nav.open {
    transform: translateY(0);
  }
  .header-nav a {
    padding: 14px 16px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(201,168,106,0.06);
    border-radius: 0;
  }
  .header-nav a:last-child {
    border-bottom: none;
  }
  .header-burger {
    display: flex;
  }
  .header-cta {
    padding: 8px 16px;
    font-size: 0.85rem;
  }
  .case-hero {
    padding: 56px 0;
  }
  .case-hero h1 {
    font-size: 2rem;
  }
  .compare-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .metrics-strip {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .breadcrumb .back-link {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  :root {
    --section-space: 44px;
    --header-height: 56px;
  }
  .container {
    padding: 0 16px;
  }
  .header-logo {
    font-size: 1.15rem;
    gap: 6px;
  }
  .header-logo .logo-mark {
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
  }
  .header-cta {
    padding: 6px 12px;
    font-size: 0.75rem;
    gap: 4px;
  }
  .case-hero {
    padding: 40px 0;
  }
  .case-hero h1 {
    font-size: 1.6rem;
  }
  .case-hero p {
    font-size: 0.95rem;
  }
  .case-content h3 {
    font-size: 1.1rem;
  }
  .case-result {
    gap: 10px;
  }
  .case-result-item .result-num {
    font-size: 1.15rem;
  }
  .compare-panel {
    padding: 20px 16px;
  }
  .metrics-strip {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
  .cta-form-panel {
    padding: 20px 16px;
  }
  .section-title {
    font-size: 1.4rem;
  }
}

/* roulang page: category4 */
:root {
            --color-bg: #0B0C10;
            --color-panel: #14161B;
            --color-card: #1B1E24;
            --color-primary: #C9A86A;
            --color-primary-light: #E8D5A8;
            --color-secondary: #9AA3AF;
            --color-accent: #5EEAD4;
            --color-positive: #34D399;
            --color-negative: #F87171;
            --color-border: rgba(201, 168, 106, 0.16);
            --color-border-strong: rgba(201, 168, 106, 0.35);
            --color-text: #F5F3EE;
            --color-text-muted: #9AA3AF;
            --color-text-dim: #6B7280;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 20px 40px -20px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(94, 234, 212, 0.12);
            --shadow-gold: 0 8px 32px rgba(201, 168, 106, 0.18);
            --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-num: 'Bahnschrift', 'DIN Alternate', 'Roboto Mono', 'PingFang SC', monospace;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --section-space: 72px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-spring: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: var(--color-text);
            background-color: var(--color-panel);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            transition: all var(--transition-fast);
            width: 100%;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(201, 168, 106, 0.12);
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--color-text-dim);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(11, 12, 16, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: background-color var(--transition-fast);
        }

        .site-header.scrolled {
            background-color: rgba(11, 12, 16, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.06em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            border-radius: var(--radius-sm);
            color: #0B0C10;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .header-nav a {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }

        .header-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-text);
        }

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

        .header-nav a.active {
            color: var(--color-primary);
        }

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

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            color: #0B0C10;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .header-cta:hover {
            color: #0B0C10;
            box-shadow: var(--shadow-gold);
            transform: translateY(-1px);
        }

        .header-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 4px;
        }

        .header-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            border-bottom: 1px solid var(--color-border);
            background-color: rgba(20, 22, 27, 0.7);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-dim);
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--color-border-strong);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .breadcrumb .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
        }

        .breadcrumb .back-link:hover {
            color: #7ff3e0;
        }

        /* ========== HERO ========== */
        .support-hero {
            position: relative;
            padding: 72px 0 64px;
            background-image: linear-gradient(180deg, rgba(11, 12, 16, 0.75) 0%, rgba(11, 12, 16, 0.92) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--color-border);
        }

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

        .support-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border: 1px solid var(--color-border-strong);
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--color-accent);
            letter-spacing: 0.08em;
            margin-bottom: 20px;
            background: rgba(94, 234, 212, 0.06);
        }

        .support-hero h1 {
            font-family: var(--font-title);
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            color: var(--color-text);
        }

        .support-hero h1 .accent {
            color: var(--color-primary);
        }

        .support-hero .hero-sub {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .support-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }

        .support-hero .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }

        .support-hero .hero-meta-item .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-positive);
            box-shadow: 0 0 10px rgba(52, 211, 153, 0.5);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-space) 0;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .section-header .section-label::before {
            content: '';
            width: 18px;
            height: 1px;
            background: var(--color-accent);
        }

        .section-header h2 {
            font-family: var(--font-title);
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--color-text-muted);
            font-size: 1rem;
            max-width: 620px;
            line-height: 1.8;
        }

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

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

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

        .faq-item.active {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-border-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #0B0C10;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-fast);
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.75;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 280px;
            padding: 0 24px 20px;
        }

        /* ========== GUIDE CARDS ========== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .guide-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

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

        .guide-card:hover::before {
            opacity: 1;
        }

        .guide-card .guide-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(201, 168, 106, 0.1);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .guide-card h3 {
            font-family: var(--font-title);
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .guide-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        .guide-card .guide-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            transition: all var(--transition-fast);
        }

        .guide-card .guide-link:hover {
            gap: 10px;
            color: #7ff3e0;
        }

        /* ========== CTA FORM ========== */
        .cta-section {
            padding: var(--section-space) 0;
            background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-panel) 100%);
            border-top: 1px solid var(--color-border);
        }

        .cta-panel {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 48px;
            box-shadow: var(--shadow-card);
        }

        .cta-left h2 {
            font-family: var(--font-title);
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .cta-left p {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .cta-left .cta-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-left .cta-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }

        .cta-left .cta-points li::before {
            content: '✓';
            color: var(--color-positive);
            font-weight: 700;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .cta-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .cta-form label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
            margin-bottom: 4px;
            display: block;
        }

        .cta-form .form-group {
            display: flex;
            flex-direction: column;
        }

        .cta-form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239AA3AF' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }

        .cta-form .submit-btn {
            padding: 14px 28px;
            background: linear-gradient(135deg, #C9A86A, #E8D5A8);
            color: #0B0C10;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-sm);
            margin-top: 8px;
            transition: all var(--transition-fast);
        }

        .cta-form .submit-btn:hover {
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
        }

        .cta-form .form-note {
            font-size: 0.8rem;
            color: var(--color-text-dim);
            text-align: center;
            margin-top: 4px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-panel);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-title);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            line-height: 1.75;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: var(--color-text-muted);
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

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

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

        .footer-bottom a {
            color: var(--color-text-dim);
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-panel {
                grid-template-columns: 1fr;
                padding: 36px;
            }

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

        @media (max-width: 768px) {
            :root {
                --header-height: 62px;
                --section-space: 56px;
            }

            .header-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background-color: rgba(11, 12, 16, 0.98);
                border-bottom: 1px solid var(--color-border);
                padding: 16px 24px 24px;
                flex-direction: column;
                gap: 14px;
                align-items: flex-start;
            }

            .header-nav.mobile-open {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .header-toggle {
                display: flex;
            }

            .support-hero {
                padding: 48px 0;
            }

            .support-hero h1 {
                font-size: clamp(1.8rem, 7vw, 2.5rem);
            }

            .guide-grid {
                grid-template-columns: 1fr;
            }

            .cta-form .form-row {
                grid-template-columns: 1fr;
            }

            .cta-panel {
                padding: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }

            .faq-answer {
                font-size: 0.9rem;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 44px;
                --header-height: 56px;
            }

            .container {
                padding: 0 16px;
            }

            .support-hero .hero-meta {
                gap: 14px;
                flex-direction: column;
            }

            .breadcrumb {
                font-size: 0.78rem;
                gap: 4px;
            }

            .breadcrumb .back-link {
                display: none;
            }

            .cta-panel {
                padding: 20px;
            }
        }