/* roulang page: index */
:root {
            --ink: #0A0E1A;
            --ink-deep: #070B14;
            --surface: #131A2E;
            --glass: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #F6C86B;
            --accent-2: #5AC8D8;
            --text: #E8EDF7;
            --text-secondary: #A9B6D4;
            --text-muted: #6B7894;
            --gradient-star: linear-gradient(135deg, #F6D57E, #E8A84C);
            --radius-card: 16px;
            --radius-price: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --glow-btn: 0 0 20px rgba(246, 200, 107, 0.35);
            --glow-btn-hover: 0 0 32px rgba(246, 200, 107, 0.55);
            --font-main: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Helvetica Neue", sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--ink);
            background-image:
                radial-gradient(1px 1px at 25% 35%, rgba(255, 255, 255, 0.3), transparent),
                radial-gradient(1px 1px at 50% 15%, rgba(255, 255, 255, 0.2), transparent),
                radial-gradient(1px 1px at 75% 45%, rgba(255, 255, 255, 0.25), transparent),
                radial-gradient(1px 1px at 20% 75%, rgba(255, 255, 255, 0.15), transparent),
                radial-gradient(1px 1px at 90% 65%, rgba(255, 255, 255, 0.2), transparent),
                radial-gradient(1px 1px at 45% 90%, rgba(255, 255, 255, 0.18), transparent),
                radial-gradient(1px 1px at 65% 8%, rgba(255, 255, 255, 0.22), transparent);
            -webkit-font-smoothing: antialiased;
        }
        body::before {
            content: '';
            position: fixed;
            top: -20%;
            left: -10%;
            width: 65%;
            height: 65%;
            background: radial-gradient(circle, rgba(42, 27, 77, 0.35) 0%, transparent 70%);
            z-index: -1;
            pointer-events: none;
        }
        body::after {
            content: '';
            position: fixed;
            bottom: -20%;
            right: -10%;
            width: 65%;
            height: 65%;
            background: radial-gradient(circle, rgba(18, 61, 77, 0.3) 0%, transparent 70%);
            z-index: -1;
            pointer-events: none;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin: 0 0 0.5em;
        }
        h1 {
            font-size: clamp(32px, 5vw, 64px);
            font-weight: 800;
            line-height: 1.15;
        }
        h2 {
            font-size: clamp(24px, 3.5vw, 36px);
            font-weight: 700;
            line-height: 1.25;
        }
        p {
            margin: 0 0 16px;
            color: var(--text-secondary);
        }

        /* ===== Buttons ===== */
        .btn {
            min-height: 48px;
            padding: 0 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
            text-decoration: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-star);
            color: var(--ink);
            box-shadow: var(--glow-btn);
        }
        .btn-primary:hover {
            box-shadow: var(--glow-btn-hover);
            transform: translateY(-2px);
            color: var(--ink);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-lg {
            min-height: 54px;
            padding: 0 36px;
            font-size: 16px;
        }
        .btn-sm {
            min-height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            z-index: 1050;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            margin: 0;
            padding: 0;
            list-style: none;
            gap: 36px;
        }
        .nav-menu .nav-link {
            font-size: 15px;
            color: var(--text-secondary);
            text-decoration: none;
            position: relative;
            padding: 8px 0;
            transition: color 0.25s ease;
            background: transparent;
        }
        .nav-menu .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--gradient-star);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
        }
        .nav-menu .nav-link:hover,
        .nav-menu .nav-link.active {
            color: var(--accent);
        }
        .nav-menu .nav-link:hover::after,
        .nav-menu .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            margin-left: auto;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 8px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            min-height: 720px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 26, 0.4) 0%, rgba(10, 14, 26, 0.72) 50%, rgba(10, 14, 26, 0.92) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
            padding: 120px 24px 80px;
        }
        .hero-title {
            font-size: clamp(40px, 6vw, 72px);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text);
            background: linear-gradient(135deg, #F6D57E, #E8A84C, #FFF8E7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 24px;
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(232, 237, 247, 0.82);
            max-width: 640px;
            margin: 0 auto 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .scroll-down {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            letter-spacing: 0.1em;
            text-align: center;
        }
        .mouse-icon {
            width: 24px;
            height: 36px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 12px;
            position: relative;
        }
        .mouse-icon::after {
            content: '';
            position: absolute;
            top: 6px;
            left: 50%;
            width: 4px;
            height: 8px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 2px;
            transform: translateX(-50%);
            animation: scroll-dot 1.6s ease-in-out infinite;
        }
        @keyframes scroll-dot {
            0% {
                opacity: 1;
                top: 6px;
            }
            100% {
                opacity: 0;
                top: 20px;
            }
        }

        /* ===== Section Shared ===== */
        .section-padding {
            padding: 100px 0;
        }
        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }
        .section-head.text-start {
            text-align: left;
            margin: 0 0 40px;
        }
        .section-head h2 {
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0;
        }
        .section-divider {
            width: 48px;
            height: 2px;
            background: var(--gradient-star);
            border-radius: 2px;
            margin: 20px auto 0;
        }
        .section-head.text-start .section-divider {
            margin: 16px 0 0;
        }
        .glass {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        /* ===== Stats ===== */
        .stats-strip {
            padding: 0;
            position: relative;
            z-index: 3;
            margin-top: -56px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            padding: 28px 24px;
            border-radius: var(--radius-card);
            text-align: center;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .stat-number {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-number span {
            font-size: 18px;
            font-weight: 600;
            margin-left: 2px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 8px;
            letter-spacing: 0.04em;
        }

        /* ===== Features ===== */
        .features-section {
            padding: 100px 0 80px;
        }
        .feature-card {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px;
            border-radius: var(--radius-card);
            background: var(--glass);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-star);
            transform: scaleX(0);
            transition: transform 0.35s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(246, 200, 107, 0.3);
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(246, 200, 107, 0.12);
            color: var(--accent);
            font-size: 18px;
            transition: box-shadow 0.25s ease, background 0.25s ease;
        }
        .feature-card:hover .feature-icon {
            box-shadow: 0 0 20px rgba(246, 200, 107, 0.3);
            background: rgba(246, 200, 107, 0.18);
        }
        .feature-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .feature-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        /* ===== Scenes ===== */
        .scenes-section {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .scene-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .scene-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .scene-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 26, 0.5) 100%);
        }
        .scene-list {
            margin-top: 8px;
        }
        .scene-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            transition: padding-left 0.25s ease, background 0.25s ease;
            border-radius: 8px;
            padding-left: 8px;
        }
        .scene-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 24px;
            width: 2px;
            height: 36px;
            background: var(--gradient-star);
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .scene-item:hover {
            padding-left: 16px;
            background: rgba(255, 255, 255, 0.02);
        }
        .scene-item:hover::before {
            opacity: 1;
        }
        .scene-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.6;
            line-height: 1;
            flex-shrink: 0;
        }
        .scene-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            transition: color 0.25s ease;
        }
        .scene-item:hover .scene-content h3 {
            color: var(--accent);
        }
        .scene-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        /* ===== Cases ===== */
        .case-card {
            border-radius: var(--radius-card);
            background: var(--surface);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .case-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: linear-gradient(135deg, #1a1530, #0e2b3a);
        }
        .case-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .case-card:hover .case-cover img {
            transform: scale(1.05);
        }
        .case-body {
            padding: 24px;
        }
        .case-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            border-radius: 999px;
            background: rgba(90, 200, 216, 0.12);
            color: var(--accent-2);
            margin-bottom: 12px;
            border: 1px solid rgba(90, 200, 216, 0.2);
        }
        .case-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .case-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== Pricing ===== */
        .pricing-section {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .price-card {
            border-radius: var(--radius-price);
            background: var(--glass);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 36px 32px 32px;
            position: relative;
            text-align: center;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .price-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--gradient-star);
            border-radius: 0 0 24px 24px;
        }
        .price-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .price-card.recommended {
            border-color: rgba(246, 200, 107, 0.6);
            box-shadow: 0 0 40px rgba(246, 200, 107, 0.12);
        }
        .price-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gradient-star);
            color: var(--ink);
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            box-shadow: var(--glow-btn);
            white-space: nowrap;
        }
        .price-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .price-value {
            font-family: var(--font-num);
            font-size: 48px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .price-value small {
            font-size: 22px;
            font-weight: 600;
            color: var(--accent);
            vertical-align: super;
        }
        .price-value em {
            font-style: normal;
            font-size: 14px;
            font-weight: 400;
            color: var(--text-muted);
        }
        .price-features {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
            flex-grow: 1;
        }
        .price-features li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
            text-align: left;
        }
        .price-features li i {
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }
        .price-card .btn {
            width: 100%;
        }

        /* ===== News ===== */
        .news-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }
        .news-head h2 {
            margin-bottom: 0;
        }
        .view-all {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 600;
            padding: 6px 0;
            transition: color 0.25s ease, gap 0.25s ease;
        }
        .view-all:hover {
            color: var(--accent);
            gap: 12px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            margin-top: 32px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            text-decoration: none;
            transition: background 0.25s ease;
            border-radius: 8px;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .news-thumb {
            width: 120px;
            height: 80px;
            flex-shrink: 0;
            border-radius: 12px;
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
        }
        .news-cat {
            display: inline-block;
            padding: 2px 10px;
            font-size: 12px;
            border-radius: 999px;
            background: rgba(90, 200, 216, 0.12);
            color: var(--accent-2);
            border: 1px solid rgba(90, 200, 216, 0.18);
        }
        .news-meta time {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.25s ease;
        }
        .news-item:hover .news-content h3 {
            color: var(--accent);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
            line-height: 1.55;
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }
        .news-empty i {
            font-size: 40px;
            color: var(--accent);
            opacity: 0.5;
            display: block;
            margin-bottom: 16px;
        }
        .news-empty p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(246, 200, 107, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            transition: transform 0.3s ease;
            font-size: 20px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 26, 0.82);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-form .form-control {
            background: rgba(13, 20, 36, 0.9);
            border: 1px solid var(--glass-border);
            color: var(--text);
            height: 48px;
            border-radius: 12px;
            padding: 0 16px;
            font-size: 14px;
            font-family: var(--font-main);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            width: auto;
            min-width: 180px;
            max-width: 220px;
        }
        .cta-form .form-control::placeholder {
            color: var(--text-muted);
        }
        .cta-form .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(246, 200, 107, 0.15);
            outline: none;
            color: var(--text);
            background: rgba(13, 20, 36, 0.95);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--ink-deep);
            padding-top: 72px;
        }
        .site-footer::before {
            content: '';
            display: block;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(246, 200, 107, 0.5), transparent);
            margin-bottom: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact li i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 20px;
            }
            .features-section {
                padding: 80px 0 60px;
            }
            .scenes-section,
            .pricing-section,
            .faq-section {
                padding: 80px 0;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 14, 26, 0.96);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 24px;
                gap: 0;
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                -webkit-backdrop-filter: blur(20px);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                z-index: -1;
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-menu .nav-link {
                height: 48px;
                display: flex;
                align-items: center;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                width: 100%;
                font-size: 16px;
            }
            .nav-cta {
                margin: 16px 0 0;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
                padding: 0 12px;
            }
            .stats-strip {
                margin-top: -50px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 360px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: auto;
                aspect-ratio: 16 / 9;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form .form-control {
                width: 100%;
                max-width: 360px;
            }
            .cta-form .btn {
                width: 100%;
                max-width: 360px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section-padding {
                padding: 72px 0;
            }
            .faq-question {
                font-size: 15px;
                padding: 18px 16px;
            }
        }
        @media (max-width: 575.98px) {
            .brand-text {
                font-size: 18px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .stats-grid {
                gap: 12px;
            }
            .stat-card {
                padding: 16px 12px;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-number span {
                font-size: 15px;
            }
            .stat-label {
                font-size: 12px;
            }
            .feature-card {
                flex-direction: column;
                gap: 16px;
                padding: 24px 20px;
            }
            .cta-form {
                width: 100%;
            }
            .cta-form .form-control,
            .cta-form .btn {
                max-width: 100%;
            }
        }

/* roulang page: category1 */
:root{
            --ink:#0A0E1A;
            --ink-deep:#070B14;
            --surface:#131A2E;
            --glass:rgba(255,255,255,0.06);
            --glass-border:rgba(255,255,255,0.12);
            --accent:#F6C86B;
            --accent-2:#5AC8D8;
            --text:#E8EDF7;
            --text-secondary:#A9B6D4;
            --text-muted:#6B7894;
            --gradient-star:linear-gradient(135deg,#F6D57E,#E8A84C);
            --radius-btn:999px;
            --radius-card:16px;
            --radius-price:24px;
            --shadow-card:0 8px 24px rgba(0,0,0,0.35);
            --shadow-card-hover:0 16px 40px rgba(0,0,0,0.5);
            --shadow-primary:0 0 20px rgba(246,200,107,0.35);
            --shadow-primary-hover:0 0 32px rgba(246,200,107,0.55);
            --font-sans:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC",sans-serif;
            --font-num:"Inter","Helvetica Neue",sans-serif;
        }
        *,*::before,*::after{box-sizing:border-box;}
        html{scroll-behavior:smooth;}
        body{
            background:var(--ink);
            color:var(--text);
            font-family:var(--font-sans);
            line-height:1.75;
            margin:0;
            overflow-x:hidden;
            background-image:
                radial-gradient(ellipse at 15% 0%, rgba(42,27,77,0.35), transparent 55%),
                radial-gradient(ellipse at 95% 90%, rgba(18,61,77,0.3), transparent 50%);
            background-attachment:fixed;
        }
        body::before{
            content:'';
            position:fixed;
            top:0;left:0;width:100%;height:100%;
            pointer-events:none;
            background-image:radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.25), transparent 100%),
                radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.2), transparent 100%),
                radial-gradient(1.5px 1.5px at 70% 60%, rgba(246,200,107,0.3), transparent 100%),
                radial-gradient(1px 1px at 30% 75%, rgba(255,255,255,0.18), transparent 100%),
                radial-gradient(1.5px 1.5px at 90% 45%, rgba(90,200,216,0.25), transparent 100%),
                radial-gradient(1px 1px at 50% 90%, rgba(255,255,255,0.15), transparent 100%),
                radial-gradient(1px 1px at 15% 50%, rgba(255,255,255,0.2), transparent 100%);
            z-index:0;
        }
        img{max-width:100%;}
        a{text-decoration:none;color:var(--text);transition:color .25s ease;}
        a:hover{color:var(--accent);}
        .container{position:relative;z-index:1;padding-left:24px;padding-right:24px;}
        .container-1200{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
        .container-860{max-width:860px;margin:0 auto;padding-left:24px;padding-right:24px;}
        .btn{border-radius:var(--radius-btn);font-weight:700;font-size:15px;transition:all .3s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border:none;}
        .btn-primary{
            background:var(--gradient-star);
            color:var(--ink-deep);
            box-shadow:var(--shadow-primary);
        }
        .btn-primary:hover{
            box-shadow:var(--shadow-primary-hover);
            color:var(--ink-deep);
            transform:translateY(-2px);
            filter:brightness(1.05);
        }
        .btn-primary:active{transform:scale(0.97);}
        .btn-outline{
            background:transparent;
            border:1px solid rgba(255,255,255,0.3);
            color:#fff;
            backdrop-filter:blur(8px);
        }
        .btn-outline:hover{
            border-color:var(--accent);
            color:var(--accent);
            transform:translateY(-2px);
            box-shadow:0 0 20px rgba(246,200,107,0.15);
        }
        .btn-outline:active{transform:scale(0.97);}
        .btn-sm{min-height:42px;padding:0 22px;font-size:14px;}
        .section-label{
            display:inline-block;
            font-size:13px;
            font-weight:600;
            letter-spacing:1.5px;
            color:var(--accent);
            text-transform:uppercase;
            margin-bottom:8px;
        }
        .section-title{
            font-size:clamp(24px, 3.5vw, 36px);
            font-weight:700;
            line-height:1.25;
            margin-bottom:16px;
            letter-spacing:0.5px;
        }
        .section-line{
            width:48px;height:2px;
            background:var(--gradient-star);
            border-radius:2px;
            margin-bottom:20px;
        }
        .section-lead{
            font-size:16px;
            color:var(--text-secondary);
            margin-bottom:32px;
            max-width:560px;
        }
        .text-gold{color:var(--accent);}
        .text-secondary-2{color:var(--text-secondary);}
        .text-muted-2{color:var(--text-muted);}
        .glass-card{
            background:var(--glass);
            backdrop-filter:blur(12px);
            -webkit-backdrop-filter:blur(12px);
            border:1px solid var(--glass-border);
            border-radius:var(--radius-card);
            box-shadow:var(--shadow-card);
        }
        /* Header */
        .site-header{
            position:fixed;
            top:0;left:0;right:0;
            height:72px;
            background:rgba(10,14,26,0.85);
            backdrop-filter:blur(16px);
            -webkit-backdrop-filter:blur(16px);
            border-bottom:1px solid rgba(255,255,255,0.08);
            z-index:1000;
            transition:background .3s ease;
        }
        .main-nav{
            display:flex;
            align-items:center;
            justify-content:space-between;
            height:72px;
            gap:24px;
        }
        .brand-logo{
            display:flex;
            align-items:center;
            gap:10px;
            flex-shrink:0;
        }
        .brand-icon{
            display:flex;
            align-items:center;
            justify-content:center;
            width:36px;height:36px;
            border-radius:50%;
            background:rgba(246,200,107,0.1);
            border:1px solid rgba(246,200,107,0.2);
        }
        .brand-text{
            font-size:19px;
            font-weight:800;
            letter-spacing:0.5px;
            background:var(--gradient-star);
            -webkit-background-clip:text;
            background-clip:text;
            -webkit-text-fill-color:transparent;
            white-space:nowrap;
        }
        .nav-menu{
            list-style:none;
            display:flex;
            align-items:center;
            gap:36px;
            margin:0;
            padding:0;
        }
        .nav-menu .nav-link{
            font-size:15px;
            font-weight:500;
            color:var(--text-secondary);
            position:relative;
            padding:6px 2px;
            transition:color .25s ease;
        }
        .nav-menu .nav-link::after{
            content:'';
            position:absolute;
            left:0;bottom:-2px;
            width:0;
            height:2px;
            background:var(--gradient-star);
            border-radius:2px;
            transition:width .25s ease;
        }
        .nav-menu .nav-link:hover{color:var(--accent);}
        .nav-menu .nav-link:hover::after{width:100%;}
        .nav-menu .nav-link.active{
            color:var(--accent);
            font-weight:600;
        }
        .nav-menu .nav-link.active::after{width:100%;}
        .nav-cta{margin-left:12px;flex-shrink:0;}
        .nav-toggle{
            display:none;
            background:transparent;
            border:none;
            cursor:pointer;
            width:40px;height:40px;
            padding:8px;
            flex-direction:column;
            justify-content:center;
            gap:5px;
        }
        .nav-toggle span{
            display:block;
            width:100%;height:2px;
            background:#fff;
            border-radius:2px;
            transition:all .3s ease;
        }
        .nav-toggle:hover span{background:var(--accent);}
        /* Footer */
        .site-footer{
            background:var(--ink-deep);
            border-top:1px solid transparent;
            position:relative;
            z-index:1;
        }
        .site-footer::before{
            content:'';
            position:absolute;
            top:0;left:20%;right:20%;
            height:1px;
            background:linear-gradient(90deg,transparent,var(--accent),transparent);
        }
        .footer-grid{
            display:grid;
            grid-template-columns:2fr 1fr 1fr 1.4fr;
            gap:48px;
            padding:60px 0 40px;
        }
        .footer-brand p{
            font-size:14px;
            color:var(--text-secondary);
            margin-top:16px;
            line-height:1.7;
            max-width:280px;
        }
        .footer-col h4{
            font-size:16px;
            font-weight:600;
            color:#fff;
            margin-bottom:16px;
        }
        .footer-col ul{
            list-style:none;
            padding:0;
            margin:0;
        }
        .footer-col ul li{
            margin-bottom:10px;
        }
        .footer-col ul a{
            font-size:14px;
            color:var(--text-secondary);
            transition:color .25s, padding-left .25s;
        }
        .footer-col ul a:hover{
            color:var(--accent);
            padding-left:4px;
        }
        .footer-contact li{
            font-size:14px;
            color:var(--text-secondary);
            display:flex;
            align-items:center;
            gap:8px;
        }
        .footer-contact i{
            color:var(--accent);
            width:16px;
            text-align:center;
        }
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,0.06);
            padding:20px 0;
            text-align:center;
        }
        .footer-bottom p{
            font-size:13px;
            color:var(--text-muted);
            margin:0;
        }
        /* Page Hero */
        .page-hero{
            padding:140px 0 60px;
            position:relative;
            background:
                linear-gradient(to bottom, rgba(10,14,26,0.55), var(--ink) 90%),
                url('/assets/images/backpic/back-2.webp') center/cover;
            border-bottom:1px solid rgba(255,255,255,0.08);
        }
        .page-hero .section-title{
            font-size:clamp(32px,5vw,48px);
            font-weight:800;
            line-height:1.2;
        }
        .page-hero .section-lead{
            font-size:17px;
            max-width:640px;
            margin-bottom:24px;
        }
        .hero-badge{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:6px 16px;
            background:rgba(246,200,107,0.1);
            border:1px solid rgba(246,200,107,0.25);
            border-radius:999px;
            color:var(--accent);
            font-size:13px;
            font-weight:500;
            margin-bottom:20px;
        }
        .hero-badge i{font-size:12px;}
        /* Categories / Cards Grid */
        .cat-card{
            position:relative;
            background:var(--glass);
            backdrop-filter:blur(12px);
            border:1px solid var(--glass-border);
            border-radius:16px;
            overflow:hidden;
            transition:transform .35s ease,box-shadow .35s ease;
            height:100%;
        }
        .cat-card::before{
            content:'';
            position:absolute;
            top:0;left:0;right:0;
            height:2px;
            background:var(--gradient-star);
            opacity:0;
            transition:opacity .35s ease;
        }
        .cat-card:hover::before{opacity:1;}
        .cat-card:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-card-hover);
        }
        .cat-card-cover{
            display:block;
            width:100%;
            aspect-ratio:16/10;
            object-fit:cover;
            background:linear-gradient(135deg,#1a2340,#0d1424);
        }
        .cat-card-body{
            padding:24px;
        }
        .cat-card .tag{
            display:inline-block;
            padding:4px 12px;
            border-radius:6px;
            font-size:12px;
            font-weight:600;
            background:rgba(90,200,216,0.1);
            border:1px solid rgba(90,200,216,0.3);
            color:var(--accent-2);
            margin-bottom:12px;
        }
        .cat-card .card-title{
            font-size:17px;
            font-weight:700;
            margin-bottom:10px;
            line-height:1.5;
            display:-webkit-box;
            -webkit-line-clamp:2;
            -webkit-box-orient:vertical;
            overflow:hidden;
            color:var(--text);
        }
        .cat-card .card-desc{
            font-size:14px;
            color:var(--text-secondary);
            line-height:1.6;
            display:-webkit-box;
            -webkit-line-clamp:3;
            -webkit-box-orient:vertical;
            overflow:hidden;
            margin-bottom:16px;
        }
        .cat-card .card-meta{
            display:flex;
            justify-content:space-between;
            align-items:center;
            font-size:13px;
            color:var(--text-muted);
        }
        .cat-card .more-link{
            color:var(--accent);
            font-size:13px;
            font-weight:600;
        }
        .cat-card .more-link:hover{padding-right:4px;}
        .cat-card .more-link i{font-size:12px;margin-left:4px;transition:transform .25s;}
        .cat-card .more-link:hover i{transform:translateX(3px);}
        /* Info Section */
        .info-section{
            padding:80px 0;
        }
        .info-grid{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:48px;
            align-items:center;
        }
        .info-image{
            border-radius:16px;
            overflow:hidden;
            position:relative;
            box-shadow:var(--shadow-card-hover);
        }
        .info-image img{
            width:100%;
            display:block;
            aspect-ratio:4/3;
            object-fit:cover;
        }
        .info-image::after{
            content:'';
            position:absolute;
            inset:0;
            background:linear-gradient(135deg, rgba(10,14,26,0.2), rgba(10,14,26,0.6));
            pointer-events:none;
        }
        .info-list{
            display:flex;
            flex-direction:column;
            gap:12px;
        }
        .info-item{
            display:flex;
            gap:16px;
            padding:20px;
            border-radius:16px;
            background:rgba(255,255,255,0.04);
            border:1px solid rgba(255,255,255,0.08);
            transition:border-color .3s, background .3s;
            cursor:default;
        }
        .info-item:hover{
            border-left:2px solid var(--accent);
            background:rgba(255,255,255,0.06);
        }
        .info-item .num{
            font-family:var(--font-num);
            font-size:28px;
            font-weight:800;
            color:var(--accent);
            line-height:1;
            flex-shrink:0;
        }
        .info-item h3{
            font-size:16px;
            font-weight:600;
            margin-bottom:4px;
            color:var(--text);
        }
        .info-item p{
            font-size:14px;
            color:var(--text-secondary);
            line-height:1.6;
            margin:0;
        }
        /* Tools Section */
        .tools-section{
            padding:80px 0;
            background:rgba(255,255,255,0.02);
            border-top:1px solid rgba(255,255,255,0.05);
            border-bottom:1px solid rgba(255,255,255,0.05);
        }
        .tool-item{
            display:flex;
            align-items:flex-start;
            gap:20px;
            padding:24px;
            border-radius:16px;
            background:rgba(255,255,255,0.06);
            border:1px solid rgba(255,255,255,0.12);
            backdrop-filter:blur(12px);
            transition:transform .3s, box-shadow .3s;
            position:relative;
            overflow:hidden;
            height:100%;
        }
        .tool-item::before{
            content:'';
            position:absolute;
            top:0;left:0;right:0;
            height:2px;
            background:var(--gradient-star);
            opacity:0;
            transition:opacity .3s;
        }
        .tool-item:hover::before{opacity:1;}
        .tool-item:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-card-hover);
        }
        .tool-icon{
            width:48px;height:48px;
            border-radius:12px;
            display:flex;
            align-items:center;
            justify-content:center;
            background:rgba(246,200,107,0.12);
            border:1px solid rgba(246,200,107,0.25);
            color:var(--accent);
            font-size:20px;
            flex-shrink:0;
            transition:box-shadow .3s, background .3s;
        }
        .tool-item:hover .tool-icon{
            box-shadow:0 0 20px rgba(246,200,107,0.25);
            background:rgba(246,200,107,0.18);
        }
        .tool-item h3{
            font-size:16px;
            font-weight:600;
            margin-bottom:6px;
        }
        .tool-item p{
            font-size:14px;
            color:var(--text-secondary);
            line-height:1.6;
            margin:0;
        }
        /* Tips Section */
        .tips-section{
            padding:80px 0;
        }
        .tips-list{
            display:flex;
            flex-direction:column;
            gap:16px;
            max-width:760px;
            margin:0 auto;
        }
        .tip-item{
            display:flex;
            gap:16px;
            padding:20px;
            border-radius:16px;
            background:rgba(255,255,255,0.04);
            border:1px solid rgba(255,255,255,0.08);
            transition:background .3s, border-color .3s;
        }
        .tip-item:hover{
            background:rgba(255,255,255,0.06);
            border-color:rgba(246,200,107,0.3);
        }
        .tip-icon{
            width:36px;height:36px;
            border-radius:50%;
            background:rgba(90,200,216,0.12);
            border:1px solid rgba(90,200,216,0.3);
            display:flex;
            align-items:center;
            justify-content:center;
            color:var(--accent-2);
            font-size:14px;
            flex-shrink:0;
            margin-top:2px;
        }
        .tip-item h4{
            font-size:15px;
            font-weight:600;
            margin-bottom:4px;
            color:var(--text);
        }
        .tip-item p{
            font-size:14px;
            color:var(--text-secondary);
            margin:0;
            line-height:1.6;
        }
        /* CTA Section */
        .cta-section{
            padding:100px 0;
            position:relative;
            background:linear-gradient(to bottom, rgba(10,14,26,0.7), rgba(10,14,26,0.92)), url('/assets/images/backpic/back-3.png') center/cover;
            text-align:center;
        }
        .cta-section .section-title{
            font-size:clamp(28px, 4vw, 42px);
            margin-bottom:16px;
        }
        .cta-section .section-lead{
            margin:0 auto 32px;
            font-size:16px;
            color:var(--text-secondary);
        }
        .cta-buttons{
            display:flex;
            gap:16px;
            justify-content:center;
            flex-wrap:wrap;
        }
        /* Breadcrumb */
        .breadcrumb-wrap{
            padding:16px 0;
            background:rgba(255,255,255,0.02);
            border-bottom:1px solid rgba(255,255,255,0.06);
        }
        .breadcrumb-nav{
            font-size:14px;
            color:var(--text-muted);
        }
        .breadcrumb-nav a{
            color:var(--text-secondary);
        }
        .breadcrumb-nav a:hover{color:var(--accent);}
        .breadcrumb-nav .sep{
            margin:0 8px;
            color:var(--text-muted);
        }
        /* Mobile Menu */
        @media (max-width: 992px){
            .nav-menu{
                position:fixed;
                top:72px;
                right:-100%;
                width:320px;
                max-width:85%;
                height:calc(100vh - 72px);
                background:rgba(10,14,26,0.96);
                backdrop-filter:blur(20px);
                flex-direction:column;
                align-items:flex-start;
                gap:0;
                padding:24px 28px;
                transition:right .35s ease;
                overflow-y:auto;
                border-left:1px solid rgba(255,255,255,0.08);
            }
            .nav-menu.open{right:0;}
            .nav-menu li{
                width:100%;
                border-bottom:1px solid rgba(255,255,255,0.08);
            }
            .nav-menu .nav-link{
                display:block;
                padding:16px 0;
                font-size:16px;
            }
            .nav-cta{
                order:99;
                margin:24px 0 0;
                width:100%;
            }
            .nav-cta .btn{
                width:100%;
            }
            .nav-toggle{
                display:flex;
            }
            .footer-grid{
                grid-template-columns:1fr 1fr;
                gap:32px;
            }
        }
        @media (max-width: 768px){
            .info-grid{
                grid-template-columns:1fr;
                gap:32px;
            }
            .page-hero{
                padding:120px 0 48px;
            }
            .footer-grid{
                grid-template-columns:1fr 1fr;
                padding:48px 0 32px;
            }
            .cta-buttons .btn{
                width:100%;
            }
        }
        @media (max-width: 576px){
            .footer-grid{
                grid-template-columns:1fr;
                gap:28px;
            }
            .container-1200,
            .container-860{
                padding-left:16px;
                padding-right:16px;
            }
            body{
                font-size:15px;
            }
            .tool-item{
                flex-direction:column;
                gap:12px;
            }
            .tip-item{
                flex-direction:column;
                gap:8px;
            }
            .btn{
                padding:0 20px;
            }
        }

/* roulang page: category2 */
:root {
            --ink: #0A0E1A;
            --ink-deep: #070B14;
            --surface: #131A2E;
            --glass: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #F6C86B;
            --accent-2: #5AC8D8;
            --text: #E8EDF7;
            --text-secondary: #A9B6D4;
            --text-muted: #6B7894;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --gradient-star: linear-gradient(135deg, #F6D57E, #E8A84C);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            background-color: var(--ink);
            background-image: radial-gradient(ellipse 60% 40% at 15% 10%, rgba(42, 27, 77, 0.28), transparent 70%),
                radial-gradient(ellipse 50% 35% at 85% 90%, rgba(18, 61, 77, 0.22), transparent 70%);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.4), transparent 100%),
                radial-gradient(1px 1px at 70% 65%, rgba(246, 200, 107, 0.3), transparent 100%),
                radial-gradient(1px 1px at 40% 80%, rgba(255, 255, 255, 0.3), transparent 100%),
                radial-gradient(1.5px 1.5px at 85% 25%, rgba(90, 200, 216, 0.25), transparent 100%),
                radial-gradient(1px 1px at 55% 10%, rgba(255, 255, 255, 0.2), transparent 100%),
                radial-gradient(1px 1px at 10% 65%, rgba(255, 255, 255, 0.25), transparent 100%),
                radial-gradient(1.5px 1.5px at 95% 80%, rgba(246, 200, 107, 0.15), transparent 100%),
                radial-gradient(1px 1px at 30% 45%, rgba(255, 255, 255, 0.2), transparent 100%),
                radial-gradient(1px 1px at 65% 30%, rgba(255, 255, 255, 0.3), transparent 100%),
                radial-gradient(1px 1px at 45% 90%, rgba(255, 255, 255, 0.15), transparent 100%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
            margin: 0 auto;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1000;
        }
        .site-header .container {
            height: 100%;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu .nav-link {
            font-size: 15px;
            color: var(--text-secondary);
            position: relative;
            padding: 8px 0;
        }
        .nav-menu .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            border-radius: 2px;
        }
        .nav-menu .nav-link:hover {
            color: var(--accent);
        }
        .nav-menu .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-menu .nav-link.active {
            color: var(--accent);
        }
        .nav-menu .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            margin-left: 8px;
        }
        .btn-primary {
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            color: #0A0E1A;
            border: none;
            border-radius: 999px;
            height: 48px;
            padding: 0 28px;
            font-weight: 700;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: 0 0 20px rgba(246, 200, 107, 0.35);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(246, 200, 107, 0.55);
            transform: translateY(-2px);
            color: #0A0E1A;
        }
        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 0 20px rgba(246, 200, 107, 0.35);
        }
        .btn-primary.btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1100;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* Page Hero */
        .page-hero {
            padding: 160px 0 80px;
            position: relative;
            background-image: linear-gradient(180deg, rgba(10, 14, 26, 0.75) 0%, rgba(10, 14, 26, 0.92) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .eyebrow {
            font-size: 14px;
            color: var(--accent);
            letter-spacing: 2px;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .page-hero .eyebrow::before {
            content: "";
            width: 32px;
            height: 2px;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
        }
        .page-hero h1 {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #F6D57E 0%, #E8EDF7 50%, #F6D57E 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .page-hero .subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }
        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }
        .hero-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 12px rgba(246, 200, 107, 0.15);
        }

        /* Section Styles */
        .section-block {
            padding: 90px 0;
            position: relative;
        }
        .section-head {
            margin-bottom: 52px;
        }
        .section-head .eyebrow {
            font-size: 14px;
            color: var(--accent);
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-head .eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
        }
        .section-head h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .section-head .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.75;
        }
        .section-head .gold-line {
            width: 48px;
            height: 2px;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            margin-top: 18px;
            border-radius: 2px;
        }

        /* Service Overview Cards */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.35s ease, box-shadow 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            opacity: 0;
            transition: opacity 0.35s ease;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(246, 200, 107, 0.3);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            background: rgba(246, 200, 107, 0.1);
            border: 1px solid rgba(246, 200, 107, 0.2);
            margin-bottom: 20px;
            transition: box-shadow 0.3s ease;
        }
        .service-card:hover .card-icon {
            box-shadow: 0 0 16px rgba(246, 200, 107, 0.2);
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .process-step {
            text-align: left;
            padding: 28px 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(246, 200, 107, 0.25);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .process-step .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* FAQ Accordion */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(246, 200, 107, 0.3);
        }
        .faq-item.active {
            border-color: rgba(246, 200, 107, 0.35);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 28px;
            cursor: pointer;
            min-height: 60px;
            transition: background 0.3s ease;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question .q-text {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding-right: 20px;
        }
        .faq-question .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(246, 200, 107, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent);
            flex-shrink: 0;
            transition: all 0.35s ease;
        }
        .faq-item.active .q-icon {
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            color: #0A0E1A;
            border-color: transparent;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 28px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            margin: 0 28px 0;
            padding-left: 0;
            padding-right: 0;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        /* CTA Section */
        .cta-section {
            padding: 90px 0;
            position: relative;
            background-image: linear-gradient(180deg, rgba(10, 14, 26, 0.85) 0%, rgba(10, 14, 26, 0.72) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        .cta-box {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-box .btn-row {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Pagination */
        .pagination-wrap {
            padding: 40px 0 80px;
            text-align: center;
        }
        .pagination .page-link {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
            border-radius: 999px;
            margin: 0 4px;
            padding: 8px 18px;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .pagination .page-link:hover {
            background: rgba(246, 200, 107, 0.15);
            border-color: var(--accent);
            color: var(--accent);
        }
        .pagination .page-item.active .page-link {
            background: linear-gradient(135deg, #F6D57E, #E8A84C);
            border-color: transparent;
            color: #0A0E1A;
            font-weight: 700;
        }

        /* Footer */
        .site-footer {
            background: #070B14;
            padding: 72px 0 0;
            position: relative;
            z-index: 10;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(246, 200, 107, 0.4), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 320px;
                height: 100vh;
                background: rgba(10, 14, 26, 0.97);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 80px 32px 32px;
                transition: right 0.4s ease;
                backdrop-filter: blur(20px);
                z-index: 1050;
            }
            .nav-menu.open {
                right: 0;
            }
            .nav-menu .nav-link {
                width: 100%;
                padding: 16px 0;
                font-size: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-cta {
                margin: 16px 32px 0;
                width: calc(100% - 64px);
                position: fixed;
                bottom: 40px;
                left: 0;
                z-index: 1060;
                display: none;
            }
            .nav-cta.show-mobile {
                display: block;
            }
            .nav-toggle {
                display: flex;
                position: relative;
                z-index: 1100;
                margin-left: auto;
            }
            .nav-toggle.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .nav-toggle.active span:nth-child(2) {
                opacity: 0;
            }
            .nav-toggle.active span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero {
                padding: 130px 0 60px;
            }
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: 60px 0;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .page-hero {
                padding: 120px 0 48px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .subtitle {
                font-size: 15px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .cta-box .btn-row {
                flex-direction: column;
                align-items: center;
            }
            .cta-box .btn-row .btn {
                width: 100%;
                max-width: 320px;
            }
            .btn-primary {
                width: auto;
            }
            .faq-question {
                padding: 16px 20px;
            }
            .faq-question .q-text {
                font-size: 15px;
            }
            .faq-answer-inner {
                font-size: 14px;
                margin: 0 20px 0;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            body {
                font-size: 15px;
            }
            .btn-primary {
                width: 100%;
                max-width: 320px;
            }
            .page-hero .hero-tags {
                gap: 8px;
            }
            .hero-tag {
                padding: 4px 12px;
                font-size: 12px;
            }
        }

/* roulang page: category3 */
:root {
            --ink: #0A0E1A;
            --ink-deep: #070B14;
            --surface: #131A2E;
            --glass: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #F6C86B;
            --accent-2: #5AC8D8;
            --text: #E8EDF7;
            --text-secondary: #A9B6D4;
            --text-muted: #6B7894;
            --gradient-star: linear-gradient(135deg, #F6D57E, #E8A84C);
            --radius-card: 16px;
            --radius-price: 24px;
            --radius-btn: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --glow-btn: 0 0 20px rgba(246, 200, 107, 0.35);
            --glow-btn-hover: 0 0 32px rgba(246, 200, 107, 0.55);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            background: var(--ink);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 15% 10%, rgba(42, 27, 77, 0.35), transparent 50%),
                radial-gradient(ellipse at 85% 90%, rgba(18, 61, 77, 0.3), transparent 50%),
                radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.3), transparent),
                radial-gradient(1px 1px at 70% 15%, rgba(255, 255, 255, 0.2), transparent),
                radial-gradient(1px 1px at 40% 70%, rgba(255, 255, 255, 0.25), transparent),
                radial-gradient(1px 1px at 85% 45%, rgba(246, 200, 107, 0.2), transparent),
                radial-gradient(1px 1px at 10% 85%, rgba(255, 255, 255, 0.15), transparent),
                radial-gradient(2px 2px at 60% 50%, rgba(255, 255, 255, 0.12), transparent),
                radial-gradient(1px 1px at 90% 75%, rgba(90, 200, 216, 0.2), transparent),
                radial-gradient(1px 1px at 35% 15%, rgba(255, 255, 255, 0.2), transparent);
            pointer-events: none;
            z-index: 0;
        }
        body > * {
            position: relative;
            z-index: 1;
        }
        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button {
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: 14px;
            padding: 0 16px;
            height: 48px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: #0D1424;
            color: var(--text);
            width: 100%;
            outline: none;
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        input:focus,
        textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(246, 200, 107, 0.15);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 100px 0;
        }
        .section-title {
            position: relative;
            text-align: center;
            margin-bottom: 32px;
        }
        .section-title h2 {
            font-size: clamp(24px, 3.5vw, 36px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 16px;
            font-size: 16px;
        }
        .section-title::after {
            content: "";
            display: block;
            width: 48px;
            height: 2px;
            background: var(--gradient-star);
            margin: 0 auto;
            border-radius: 2px;
        }
        .section-head-left {
            text-align: left;
            margin-bottom: 40px;
        }
        .section-head-left h2 {
            font-size: clamp(24px, 3.5vw, 36px);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 10px;
        }
        .section-head-left p {
            color: var(--text-secondary);
            max-width: 640px;
        }
        .section-head-left::after {
            content: "";
            display: block;
            width: 48px;
            height: 2px;
            background: var(--gradient-star);
            margin-top: 16px;
            border-radius: 2px;
        }

        /* */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            filter: drop-shadow(0 0 10px rgba(246, 200, 107, 0.3));
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--text);
            background: var(--gradient-star);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 36px;
            margin: 0;
            padding: 0;
        }
        .nav-link {
            display: inline-block;
            font-size: 15px;
            color: var(--text-secondary);
            position: relative;
            padding: 8px 0;
            transition: color 0.25s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-star);
            border-radius: 2px;
            transition: width 0.35s ease;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-cta {
            margin-left: 20px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--gradient-star);
            color: #131A2E;
            box-shadow: var(--glow-btn);
        }
        .btn-primary:hover {
            box-shadow: var(--glow-btn-hover);
            transform: translateY(-2px);
            color: #131A2E;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text);
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-sm {
            min-height: 42px;
            padding: 0 22px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: transparent;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /*  */
        .page-hero {
            position: relative;
            padding: 180px 0 90px;
            background: linear-gradient(to bottom, rgba(10, 14, 26, 0.5), rgba(10, 14, 26, 0.92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            background: var(--gradient-star);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            color: var(--text-secondary);
            font-size: 17px;
            max-width: 640px;
            line-height: 1.8;
        }
        .breadcrumb-custom {
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--accent);
        }
        .breadcrumb-custom .sep {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .breadcrumb-custom .current {
            color: var(--text-secondary);
        }

        /*  */
        .service-features {
            padding: 80px 0;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--gradient-star);
            border-radius: 0 0 3px 3px;
            transition: width 0.4s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            background: rgba(255, 255, 255, 0.08);
        }
        .feature-card:hover::before {
            width: 70%;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(246, 200, 107, 0.12);
            border-radius: 14px;
            font-size: 22px;
            color: var(--accent);
            transition: all 0.35s ease;
        }
        .feature-icon:hover {
            box-shadow: 0 0 20px rgba(246, 200, 107, 0.35);
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /*  */
        .service-scenario {
            padding: 90px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .scenario-item {
            padding: 24px 0 24px 28px;
            position: relative;
            border-left: 2px solid rgba(255, 255, 255, 0.1);
            transition: all 0.35s ease;
        }
        .scenario-item:hover {
            border-left-color: var(--accent);
        }
        .scenario-item .num {
            font-size: 28px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px var(--accent);
            margin-bottom: 14px;
            display: block;
            transition: color 0.3s;
        }
        .scenario-item:hover .num {
            color: var(--accent);
        }
        .scenario-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .scenario-item:hover h4 {
            color: var(--accent);
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /*  */
        .workflow-section {
            padding: 90px 0;
        }
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .workflow-step {
            background: var(--glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: all 0.35s ease;
        }
        .workflow-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .workflow-step .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 18px;
            background: var(--gradient-star);
            color: #131A2E;
            font-weight: 800;
            font-size: 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--glow-btn);
        }
        .workflow-step h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .workflow-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /*  */
        .faq-section {
            padding: 90px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border) !important;
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.35s ease;
        }
        .accordion-item:hover {
            border-color: rgba(246, 200, 107, 0.4);
        }
        .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 24px;
            min-height: 56px;
            position: relative;
            transition: all 0.3s ease;
            box-shadow: none !important;
        }
        .accordion-button::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background-image: none;
            width: auto;
            height: auto;
            color: var(--accent);
            font-size: 14px;
            transition: transform 0.3s ease;
        }
        .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: rotate(0deg);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(255, 255, 255, 0.04);
            color: var(--accent);
        }
        .accordion-button:hover {
            color: var(--accent);
        }
        .accordion-body {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            padding: 16px 24px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /*  */
        .cases-section {
            padding: 90px 0;
        }
        .case-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .case-card {
            background: var(--surface);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.35s ease;
        }
        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(246, 200, 107, 0.3);
        }
        .case-card .cover-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(42, 27, 77, 0.6), rgba(18, 61, 77, 0.5));
        }
        .case-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .case-card:hover .cover-wrap img {
            transform: scale(1.04);
        }
        .case-card .card-body {
            padding: 22px;
        }
        .case-tag {
            display: inline-block;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(90, 200, 216, 0.12);
            border: 1px solid rgba(90, 200, 216, 0.3);
            color: var(--accent-2);
            margin-bottom: 12px;
        }
        .case-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .case-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        /*  */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background: linear-gradient(to bottom, rgba(10, 14, 26, 0.85), var(--ink-deep)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: clamp(24px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--text);
        }
        .cta-inner p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /*  */
        .site-footer {
            background: var(--ink-deep);
            border-top: 1px solid transparent;
            border-image: linear-gradient(to right, transparent, rgba(246, 200, 107, 0.5), transparent) 1;
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 16px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--gradient-star);
            border-radius: 2px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            color: var(--text-muted);
        }
        .footer-contact i {
            color: var(--accent);
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /*  */
        @media (max-width: 992px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .workflow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .nav-menu {
                position: fixed;
                top: 72px;
                right: -100%;
                width: 280px;
                height: calc(100vh - 72px);
                background: rgba(10, 14, 26, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 0;
                transition: right 0.4s ease;
                z-index: 999;
                display: flex;
                box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6);
            }
            .nav-menu.open {
                right: 0;
            }
            .nav-menu li {
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-menu li:last-child {
                border-bottom: none;
            }
            .nav-menu .nav-link {
                display: block;
                padding: 16px 0;
                font-size: 16px;
                color: var(--text-secondary);
            }
            .nav-menu .nav-link::after {
                display: none;
            }
            .nav-menu .nav-link:hover,
            .nav-menu .nav-link.active {
                color: var(--accent);
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 70px 0;
            }
            .page-hero {
                padding: 140px 0 60px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .workflow-grid {
                grid-template-columns: 1fr;
            }
            .case-cards {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .btn {
                width: 100%;
            }
            .brand-text {
                font-size: 17px;
            }
            .scenario-item {
                padding-left: 20px;
            }
            .accordion-button {
                font-size: 15px;
                padding: 16px 18px;
            }
        }
        @media (max-width: 400px) {
            .brand-text {
                font-size: 15px;
            }
            .brand-icon {
                width: 28px;
                height: 28px;
            }
            .brand-icon svg {
                width: 28px;
                height: 28px;
            }
        }

/* roulang page: article */
:root {
            --ink: #0A0E1A;
            --ink-deep: #070B14;
            --surface: #131A2E;
            --glass: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --accent: #F6C86B;
            --accent-2: #5AC8D8;
            --text: #E8EDF7;
            --text-secondary: #A9B6D4;
            --text-muted: #6B7894;
            --gradient-gold: linear-gradient(135deg, #F6D57E, #E8A84C);
            --btn-glow: 0 0 20px rgba(246, 200, 107, 0.35);
            --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            --card-shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-price: 24px;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", "Inter", "Helvetica Neue", sans-serif;
            background-color: var(--ink);
            color: var(--text);
            line-height: 1.75;
            background-image:
                radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.5), transparent 50%),
                radial-gradient(1px 1px at 70% 65%, rgba(255, 255, 255, 0.4), transparent 50%),
                radial-gradient(1px 1px at 40% 80%, rgba(255, 255, 255, 0.5), transparent 50%),
                radial-gradient(1px 1px at 85% 20%, rgba(255, 255, 255, 0.3), transparent 50%),
                radial-gradient(1px 1px at 10% 10%, rgba(255, 255, 255, 0.4), transparent 50%),
                radial-gradient(1px 1px at 55% 45%, rgba(255, 255, 255, 0.25), transparent 50%),
                radial-gradient(600px 400px at 85% 10%, rgba(90, 200, 216, 0.12), transparent 60%),
                radial-gradient(700px 500px at 10% 85%, rgba(246, 200, 107, 0.06), transparent 60%),
                radial-gradient(800px 600px at 50% 0%, rgba(42, 27, 77, 0.35), transparent 60%);
            background-attachment: fixed;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-narrow {
            max-width: 860px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(10, 14, 26, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1030;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color 0.3s ease;
        }
        .brand-logo:hover .brand-text {
            color: var(--accent);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            color: var(--text-secondary);
            padding: 8px 0;
            transition: color 0.25s ease;
            display: inline-block;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--gradient-gold);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 16px;
        }
        .nav-cta .btn-primary {
            min-height: 40px;
            padding: 0 22px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 10px;
            cursor: pointer;
            z-index: 1050;
            transition: border-color 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: rgba(246, 200, 107, 0.4);
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            background: var(--gradient-gold);
            color: var(--ink);
            font-weight: 700;
            font-size: 15px;
            border: none;
            box-shadow: var(--btn-glow);
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            line-height: 1;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(246, 200, 107, 0.55);
            color: var(--ink);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 20px rgba(246, 200, 107, 0.15);
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-nav {
            margin-bottom: 20px;
        }
        .breadcrumb {
            --bs-breadcrumb-divider: '/';
            margin-bottom: 0;
        }
        .breadcrumb-item {
            display: inline-block;
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .breadcrumb-item a {
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumb-item.active {
            color: var(--accent);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .breadcrumb-item + .breadcrumb-item::before {
            content: '/' !important;
            color: rgba(255, 255, 255, 0.25) !important;
            padding: 0 10px !important;
        }
        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 64px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(10, 14, 26, 0.7) 0%, rgba(10, 14, 26, 0.85) 50%, rgba(10, 14, 26, 0.95) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-title {
            font-size: clamp(30px, 4vw, 36px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--accent);
            opacity: 0.85;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 6px;
            background: rgba(90, 200, 216, 0.12);
            border: 1px solid rgba(90, 200, 216, 0.3);
            color: var(--accent-2);
            font-size: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .category-tag:hover {
            background: rgba(90, 200, 216, 0.22);
            color: var(--accent-2);
        }
        /* ===== Article Body ===== */
        .article-section {
            padding: 64px 0 40px;
        }
        .article-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-price);
            padding: 48px 56px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--card-shadow);
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: #D5DEED;
        }
        .article-content p {
            margin-bottom: 24px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin: 40px 0 16px;
            line-height: 1.4;
        }
        .article-content h2::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 20px;
            border-radius: 2px;
            background: var(--gradient-gold);
            margin-right: 12px;
            vertical-align: -3px;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 36px 0 14px;
            line-height: 1.4;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: color 0.25s ease;
        }
        .article-content a:hover {
            color: #F6D57E;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(246, 200, 107, 0.08);
            border-radius: 0 12px 12px 0;
            padding: 20px 24px;
            margin: 24px 0;
            color: #C9D6EE;
            font-style: italic;
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }
        /* ===== Post Nav ===== */
        .post-nav {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .post-nav-link {
            flex: 1;
            max-width: 48%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .post-nav-link:hover {
            background: rgba(246, 200, 107, 0.08);
            border-color: rgba(246, 200, 107, 0.3);
            transform: translateY(-2px);
        }
        .post-nav-link.prev-link {
            justify-content: flex-start;
            text-align: left;
        }
        .post-nav-link.next-link {
            justify-content: flex-end;
            text-align: right;
        }
        .post-nav-link small {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .post-nav-link strong {
            font-size: 15px;
            color: var(--text);
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-nav-link i {
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }
        .post-nav-link.disabled {
            opacity: 0.4;
            pointer-events: none;
        }
        /* ===== Related ===== */
        .related-section {
            padding: 80px 0 40px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
        }
        .section-line {
            width: 48px;
            height: 2px;
            background: var(--gradient-gold);
            border-radius: 2px;
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }
        .related-card {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            text-decoration: none;
            transition: all 0.3s ease;
            height: 100%;
            box-shadow: var(--card-shadow);
        }
        .related-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(246, 200, 107, 0.25);
            box-shadow: var(--card-shadow-hover);
        }
        .related-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(42, 27, 77, 0.6), rgba(18, 61, 77, 0.5));
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }
        .related-body {
            padding: 20px;
        }
        .related-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(246, 200, 107, 0.12);
            color: var(--accent);
            margin-bottom: 10px;
        }
        .related-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .related-date i {
            color: var(--accent);
            opacity: 0.8;
        }
        /* ===== CTA Banner ===== */
        .cta-banner {
            position: relative;
            padding: 90px 0;
            margin-top: 80px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(10, 14, 26, 0.92) 0%, rgba(10, 14, 26, 0.75) 100%);
        }
        .cta-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-banner h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .cta-banner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--ink-deep);
            padding: 72px 0 0;
            border-top: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, rgba(246, 200, 107, 0.6), transparent) 1;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom .footer-brand-name {
            color: var(--text-secondary);
            font-weight: 600;
        }
        /* ===== Not Found ===== */
        .article-notfound {
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
        }
        .notfound-card {
            text-align: center;
            padding: 64px 48px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-price);
            box-shadow: var(--card-shadow);
        }
        .notfound-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(246, 200, 107, 0.12);
            color: var(--accent);
            font-size: 24px;
            margin-bottom: 20px;
            box-shadow: 0 0 30px rgba(246, 200, 107, 0.15);
        }
        .notfound-card h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .notfound-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .article-card {
                padding: 32px;
            }
        }
        @media (max-width: 767px) {
            body {
                background-attachment: scroll;
            }
            .site-header {
                height: 64px;
            }
            .main-nav {
                height: 64px;
            }
            .brand-text {
                font-size: 18px;
            }
            .nav-menu {
                position: fixed;
                top: 64px;
                right: 0;
                width: min(320px, 85vw);
                height: calc(100vh - 64px);
                background: rgba(10, 14, 26, 0.96);
                flex-direction: column;
                align-items: stretch;
                padding: 24px;
                margin: 0;
                transform: translateX(100%);
                transition: transform 0.3s ease;
                z-index: 1040;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
                gap: 0;
                overflow-y: auto;
            }
            .nav-menu.open {
                transform: translateX(0);
            }
            .nav-menu .nav-link {
                display: block;
                height: 48px;
                line-height: 48px;
                padding: 0 12px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                font-size: 15px;
            }
            .nav-menu .nav-link::after {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-menu.open + .nav-cta {
                display: block;
                position: fixed;
                bottom: 48px;
                left: 0;
                right: 0;
                text-align: center;
                z-index: 1050;
            }
            .nav-menu.open + .nav-cta .btn-primary {
                min-width: 160px;
            }
            .nav-toggle {
                display: flex;
            }
            .page-banner {
                padding: 110px 0 48px;
            }
            .page-title {
                font-size: 28px;
            }
            .article-card {
                padding: 24px 20px;
            }
            .post-nav {
                flex-direction: column;
                gap: 16px;
            }
            .post-nav-link {
                max-width: 100%;
            }
            .article-content {
                font-size: 15px;
            }
            .related-section {
                padding: 60px 0 30px;
            }
            .cta-banner {
                padding: 60px 0;
                margin-top: 60px;
            }
            .site-footer {
                margin-top: 60px;
                padding-top: 56px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .notfound-card {
                padding: 48px 24px;
            }
        }
        @media (max-width: 575px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .container-narrow {
                padding-left: 20px;
                padding-right: 20px;
            }
            .btn-primary {
                width: 100%;
            }
            .nav-menu.open + .nav-cta .btn-primary {
                width: auto;
                min-width: 160px;
            }
            .breadcrumb-item.active {
                max-width: 180px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
        }