/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0B1E33;
            --primary-dark: #071422;
            --primary-light: #102A43;
            --accent: #00E5FF;
            --gold: #FFB800;
            --text-main: #E7EDF4;
            --text-sub: #A8B9C8;
            --text-weak: #6C8496;
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-border: rgba(255, 255, 255, 0.12);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-tag: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 229, 255, 0.12);
            --glow-primary: 0 0 24px rgba(0, 229, 255, 0.45);
            --glow-gold: 0 0 24px rgba(255, 184, 0, 0.4);
            --spacing-section: 96px;
            --spacing-mobile: 56px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Inter, sans-serif;
            background: radial-gradient(ellipse at 30% 20%, var(--primary-light), var(--primary-dark));
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.75;
            overflow-x: hidden;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #66f0ff;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1280px;
        }

        /* ===== 导航 ===== */
        .navbar {
            background: rgba(11, 30, 51, 0.75);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            min-height: var(--nav-height);
            padding: 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
        }
        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
        }
        .navbar-brand:hover {
            color: var(--text-main);
        }
        .navbar-brand .hth-highlight {
            color: var(--accent);
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
        }
        .navbar-nav .nav-link {
            color: var(--text-sub);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem !important;
            position: relative;
            transition: color 0.3s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-main);
        }
        .navbar-nav .nav-link.active {
            color: var(--text-main);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        }
        .nav-cta {
            background: linear-gradient(135deg, #00E5FF, #00B8D4);
            color: #071422 !important;
            font-weight: 600;
            padding: 0.45rem 1.4rem !important;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
            margin-left: 0.75rem;
        }
        .nav-cta:hover {
            box-shadow: var(--glow-primary);
            transform: translateY(-1px);
            color: #071422 !important;
        }
        .countdown-badge {
            border: 1px solid rgba(255, 184, 0, 0.55);
            color: var(--gold);
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.3rem 0.8rem;
            border-radius: var(--radius-tag);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: rgba(255, 184, 0, 0.1);
            white-space: nowrap;
        }
        .countdown-badge i {
            font-size: 0.7rem;
        }
        .navbar-toggler {
            border: 1px solid rgba(0, 229, 255, 0.5);
            color: var(--accent);
            padding: 0.3rem 0.5rem;
            font-size: 1.2rem;
            border-radius: var(--radius-btn);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.25);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,229,255,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') no-repeat center center / cover;
            padding: calc(var(--nav-height) + 60px) 0 80px;
            text-align: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 30, 51, 0.88), rgba(7, 20, 34, 0.92));
        }
        .hero::after {
            content: '';
            position: absolute;
            top: 45%;
            left: 50%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
            transform: translate(-50%, -50%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.35);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.35rem 1.2rem;
            border-radius: var(--radius-tag);
            letter-spacing: 0.1em;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: clamp(2.5rem, 4.5vw, 3.5rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            line-height: 1.3;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
            letter-spacing: 0.02em;
        }
        .hero h1 .text-accent {
            color: var(--accent);
            text-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
        }
        .hero .subtitle {
            font-size: 1.15rem;
            color: var(--text-sub);
            max-width: 60ch;
            margin: 0 auto 2.5rem;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, #00E5FF, #00B8D4);
            color: #071422;
            border: none;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-btn);
            box-shadow: var(--glow-primary);
            transition: all 0.3s ease;
        }
        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.6);
            color: #071422;
        }
        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
            font-weight: 500;
            font-size: 1rem;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(6px);
            transition: all 0.3s ease;
        }
        .btn-hero-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 229, 255, 0.1);
        }
        .hero-scroll {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--text-sub);
            font-size: 1.5rem;
            animation: bounceDown 2s infinite;
            z-index: 2;
            transition: color 0.3s ease;
        }
        .hero-scroll:hover {
            color: var(--accent);
        }
        @keyframes bounceDown {
            0%, 100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-label {
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: var(--text-main);
            line-height: 1.3;
        }
        .section-subtitle {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 60ch;
            margin-bottom: 2.5rem;
        }

        /* ===== 痛点卡片 ===== */
        .pain-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            height: 100%;
            transition: all 0.35s ease;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
        }
        .pain-card:hover {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .pain-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent);
            margin-bottom: 20px;
            border: 1px solid rgba(0, 229, 255, 0.2);
            transition: all 0.3s ease;
        }
        .pain-card:hover .pain-icon {
            background: rgba(0, 229, 255, 0.25);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }
        .pain-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
            letter-spacing: 0.01em;
        }
        .pain-card p {
            color: var(--text-sub);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.65;
        }

        /* ===== 解决方案 ===== */
        .solution-wrap {
            display: flex;
            gap: 48px;
            align-items: center;
            flex-wrap: wrap;
        }
        .solution-steps {
            flex: 1 1 56%;
            min-width: 320px;
        }
        .solution-visual {
            flex: 1 1 36%;
            min-width: 300px;
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .solution-visual img {
            width: 100%;
            display: block;
            border-radius: var(--radius-card);
            transition: transform 0.5s ease;
        }
        .solution-visual:hover img {
            transform: scale(1.02);
        }
        .solution-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: var(--radius-card);
            pointer-events: none;
        }
        .solution-step {
            display: flex;
            gap: 20px;
            margin-bottom: 28px;
            position: relative;
        }
        .solution-step:last-child {
            margin-bottom: 0;
        }
        .solution-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            min-width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.25);
            border-radius: 14px;
            text-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
            font-style: italic;
            transition: all 0.3s ease;
        }
        .solution-step:hover .solution-num {
            background: rgba(0, 229, 255, 0.2);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
        }
        .solution-content {
            flex: 1;
            padding: 16px 20px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }
        .solution-content:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-hover);
        }
        .solution-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .solution-content p {
            color: var(--text-sub);
            font-size: 0.9rem;
            margin: 0;
            line-height: 1.6;
        }

        /* ===== 数据成果 ===== */
        .stats-section {
            background: rgba(16, 42, 67, 0.4);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
            backdrop-filter: blur(6px);
        }
        .stat-item {
            text-align: center;
            padding: 20px 16px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            text-shadow: 0 0 30px rgba(0, 229, 255, 0.3);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            color: var(--text-sub);
            font-size: 0.95rem;
        }

        /* ===== 证言 ===== */
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 32px;
            height: 100%;
            position: relative;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }
        .testimonial-card:hover {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .testimonial-card .quote-icon {
            font-size: 2.2rem;
            color: rgba(0, 229, 255, 0.4);
            margin-bottom: 14px;
            line-height: 1;
        }
        .testimonial-card .content {
            color: var(--text-main);
            margin-bottom: 24px;
            flex: 1;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
        }
        .testimonial-avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #00B8D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #071422;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.3;
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        /* ===== CMS 资讯区 ===== */
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }
        .news-card:hover {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }
        .news-cover {
            height: 190px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .news-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(7, 20, 34, 0.5));
        }
        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: var(--text-main);
            font-size: 0.78rem;
            padding: 0.25rem 0.8rem;
            border-radius: var(--radius-tag);
            border: 1px solid rgba(255, 255, 255, 0.25);
            z-index: 2;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .news-tag:hover {
            background: rgba(255, 184, 0, 0.3);
            border-color: rgba(255, 184, 0, 0.5);
            color: var(--gold);
        }
        .news-body {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            color: var(--text-sub);
            font-size: 0.875rem;
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-weak);
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .news-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-meta .read-more {
            color: var(--accent);
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .news-meta .read-more:hover {
            color: var(--gold);
            transform: translateX(4px);
        }
        .empty-news {
            text-align: center;
            color: var(--text-sub);
            background: var(--card-bg);
            border: 1px dashed var(--card-border);
            border-radius: var(--radius-card);
            padding: 48px 24px;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .accordion-item.faq-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border) !important;
            border-radius: var(--radius-card) !important;
            overflow: hidden;
            margin-bottom: 14px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease;
        }
        .accordion-item.faq-card:hover,
        .accordion-item.faq-card.active {
            border-color: rgba(0, 229, 255, 0.4) !important;
        }
        .accordion-button.faq-question {
            background: transparent !important;
            color: var(--text-main) !important;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: none !important;
            padding: 22px 24px;
        }
        .accordion-button.faq-question:not(.collapsed) {
            color: var(--accent) !important;
            background: rgba(0, 229, 255, 0.05) !important;
        }
        .accordion-button.faq-question::after {
            filter: invert(1) hue-rotate(180deg) brightness(0.8);
        }
        .accordion-button.faq-question .q-mark {
            color: var(--accent);
            font-weight: 700;
            margin-right: 12px;
            font-size: 1.1rem;
        }
        .accordion-body.faq-answer {
            color: var(--text-sub);
            padding: 0 24px 22px;
            background: transparent;
            font-size: 0.9rem;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(11, 30, 51, 0.85), rgba(0, 229, 255, 0.08));
            padding: 96px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.2), transparent 70%);
            transform: translate(-50%, -50%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(1.9rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-main);
        }
        .cta-section p {
            color: var(--text-sub);
            max-width: 55ch;
            margin: 0 auto 2.4rem;
            font-size: 1rem;
            line-height: 1.7;
        }
        .btn-cta-gold {
            background: linear-gradient(135deg, #FFB800, #FF9500);
            color: #071422;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 0.85rem 2.6rem;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: var(--glow-gold);
            transition: all 0.3s ease;
        }
        .btn-cta-gold:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 0 36px rgba(255, 184, 0, 0.6);
            color: #071422;
        }
        .btn-cta-ghost {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
            font-weight: 500;
            font-size: 1.05rem;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
        }
        .btn-cta-ghost:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 229, 255, 0.1);
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 28px;
        }
        .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer-brand .hth-highlight {
            color: var(--accent);
        }
        .footer-text {
            color: var(--text-weak);
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .footer-title {
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-sub);
            font-size: 0.875rem;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact {
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 2.2;
        }
        .footer-contact i {
            color: var(--accent);
            width: 22px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 22px;
            margin-top: 48px;
            text-align: center;
            color: var(--text-weak);
            font-size: 0.8rem;
        }
        .footer-bottom a {
            color: var(--text-weak);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 背景图辅助类 ===== */
        .bg-cover {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        /* ===== 通用按钮焦点状态 ===== */
        .btn:focus,
        .btn-cta-gold:focus,
        .btn-hero-primary:focus,
        .btn-hero-secondary:focus,
        .btn-cta-ghost:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .navbar {
                min-height: 60px;
            }
            .navbar-collapse {
                background: rgba(11, 30, 51, 0.98);
                border-radius: 0 0 var(--radius-card) var(--radius-card);
                padding: 16px 12px;
                margin-top: 8px;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .countdown-badge {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                display: inline-block;
                text-align: center;
            }
            .solution-wrap {
                flex-direction: column;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
                --nav-height: 60px;
            }
            .hero {
                padding: calc(var(--nav-height) + 40px) 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero .subtitle {
                font-size: 1rem;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                max-width: 280px;
            }
            .btn-hero-secondary {
                margin-top: 4px;
            }
            .section {
                padding: var(--spacing-section) 0;
            }
            .section-subtitle {
                margin-bottom: 1.8rem;
            }
            .solution-num {
                min-width: 44px;
                height: 44px;
                font-size: 1.4rem;
                border-radius: 12px;
            }
            .solution-step {
                gap: 14px;
            }
            .solution-content {
                padding: 14px 16px;
            }
            .stat-number {
                font-size: 2.3rem;
            }
            .testimonial-card {
                margin-bottom: 20px;
            }
            .news-card {
                margin-bottom: 20px;
            }
            .cta-section {
                padding: 64px 0;
            }
            .footer {
                padding: 48px 0 24px;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .pain-card,
            .solution-content,
            .testimonial-card {
                padding: 18px 16px;
            }
            .btn-cta-gold,
            .btn-cta-ghost {
                width: 100%;
                max-width: 320px;
            }
            .news-body {
                padding: 16px;
            }
            .footer-brand {
                font-size: 1.15rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0B1E33;
            --primary-dark: #071422;
            --primary-light: #102A43;
            --accent: #00E5FF;
            --accent-glow: rgba(0, 229, 255, 0.45);
            --gold: #FFB800;
            --gold-glow: rgba(255, 184, 0, 0.35);
            --text: #E7EDF4;
            --text-secondary: #A8B9C8;
            --text-muted: #6C8496;
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-border: rgba(255, 255, 255, 0.12);
            --radius: 16px;
            --radius-btn: 12px;
            --radius-tag: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 229, 255, 0.12);
            --space-section: 96px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Inter, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: radial-gradient(circle at 10% 20%, var(--primary-light) 0%, var(--primary) 40%, var(--primary-dark) 100%);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: #63efff;
        }

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

        button, input, textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent);
            border: 1px solid rgba(0, 229, 255, 0.28);
            padding: 6px 18px;
            border-radius: var(--radius-tag);
            font-size: 0.875rem;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }

        .section-tag i {
            font-size: 0.75rem;
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all 0.3s ease;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), #00c4ff);
            color: #001018;
            box-shadow: 0 0 24px var(--accent-glow);
        }

        .btn-accent:hover {
            color: #001018;
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(0, 229, 255, 0.65);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(6px);
        }

        .btn-ghost:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            background: rgba(0, 229, 255, 0.08);
        }

        .btn-gold {
            background: linear-gradient(135deg, var(--gold), #ff9500);
            color: #1a1200;
            box-shadow: 0 0 24px var(--gold-glow);
        }

        .btn-gold:hover {
            transform: translateY(-2px);
            color: #1a1200;
            box-shadow: 0 0 36px rgba(255, 184, 0, 0.55);
        }

        /* ===== Navbar ===== */
        .navbar {
            min-height: 72px;
            background: rgba(11, 30, 51, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0;
        }

        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 4px;
            letter-spacing: 0.5px;
        }

        .navbar-brand .hth-highlight {
            color: var(--accent);
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .navbar-nav {
            gap: 8px;
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 10px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.25s ease;
        }

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

        .navbar-nav .nav-link.active {
            color: var(--accent);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent);
        }

        .countdown-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 184, 0, 0.08);
            border: 1px solid rgba(255, 184, 0, 0.4);
            color: var(--gold);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }

        .countdown-badge i {
            font-size: 0.5rem;
            animation: pulse 1.5s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .nav-cta {
            padding: 8px 22px;
            font-size: 0.9375rem;
        }

        .navbar-toggler {
            border: 1px solid rgba(0, 229, 255, 0.4);
            background: rgba(0, 229, 255, 0.06);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.25);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300E5FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            background: linear-gradient(180deg, rgba(7, 20, 34, 0.7) 0%, rgba(11, 30, 51, 0.9) 100%);
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.4;
            z-index: -2;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.25) 0%, transparent 70%);
            top: -200px;
            right: -200px;
            z-index: -1;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 184, 0, 0.1);
            border: 1px solid rgba(255, 184, 0, 0.35);
            color: var(--gold);
            padding: 6px 18px;
            border-radius: var(--radius-tag);
            font-size: 0.8125rem;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .banner-badge i {
            font-size: 0.5rem;
            animation: pulse 1.5s infinite;
        }

        .page-banner h1 {
            font-size: clamp(2.5rem, 4.5vw, 3.5rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .page-banner h1 .hth-highlight {
            color: var(--accent);
        }

        .banner-lead {
            font-size: 1.0625rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        /* ===== Card ===== */
        .glass-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            overflow: hidden;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .service-card-img {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }

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

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

        .service-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 30, 51, 0.85) 100%);
        }

        .service-card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(11, 30, 51, 0.75);
            border: 1px solid rgba(0, 229, 255, 0.4);
            color: var(--accent);
            padding: 4px 14px;
            border-radius: var(--radius-tag);
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(6px);
        }

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

        .service-card-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
        }

        .service-card-body p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            margin-bottom: 0;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: 0.875rem;
            font-weight: 600;
            margin-top: 16px;
            transition: gap 0.3s ease;
        }

        .service-card-link:hover {
            gap: 12px;
            color: #63efff;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: rgba(255, 255, 255, 0.04);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
            padding: 36px 16px;
        }

        .stat-num {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: 1px;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            margin-top: 8px;
        }

        /* ===== Process ===== */
        .process-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px 28px;
            height: 100%;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }

        .process-card:hover {
            border-color: rgba(0, 229, 255, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .process-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 16px;
        }

        .process-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .process-card p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            margin-bottom: 0;
        }

        /* ===== Advantage ===== */
        .advantage-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .advantage-list li {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .advantage-icon {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            border-radius: 12px;
            color: var(--accent);
            font-size: 1.125rem;
        }

        .advantage-text h4 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .advantage-text p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 1rem;
            font-weight: 600;
            padding: 20px 24px;
            border: none;
        }

        .accordion-button::before {
            content: "Q.";
            color: var(--accent);
            font-weight: 800;
            margin-right: 10px;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.06);
            color: var(--text);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }

        .accordion-button::after {
            filter: invert(80%) brightness(1.5);
        }

        .accordion-body {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            padding: 20px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, var(--primary) 0%, #0a2740 60%, #083b5e 100%);
            border-top: 1px solid rgba(0, 229, 255, 0.15);
            border-bottom: 1px solid rgba(0, 229, 255, 0.15);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.25) 0%, transparent 70%);
            bottom: -300px;
            left: 50%;
            transform: translateX(-50%);
        }

        .cta-content {
            position: relative;
            text-align: center;
            padding: 72px 0;
        }

        .cta-content h2 {
            font-size: clamp(1.875rem, 3vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.0625rem;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 72px 0 32px;
        }

        .footer-brand {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .footer-brand .hth-highlight {
            color: var(--accent);
        }

        .footer-text {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            max-width: 320px;
            line-height: 1.75;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            transition: color 0.25s ease;
        }

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

        .footer-contact {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 20px;
            margin-right: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8125rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .navbar-nav {
                gap: 4px;
                padding: 12px 0;
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .countdown-badge {
                margin: 8px 0;
            }

            .nav-cta {
                margin-bottom: 12px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                --space-section: 56px;
            }

            .page-banner {
                min-height: 400px;
                padding: 120px 0 56px;
                text-align: center;
            }

            .page-banner .banner-lead {
                margin-left: auto;
                margin-right: auto;
            }

            .banner-actions {
                justify-content: center;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-num {
                font-size: 2.25rem;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-actions .btn {
                width: 100%;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .service-card-body {
                padding: 18px;
            }

            .process-card {
                padding: 24px 20px;
            }

            .btn {
                padding: 11px 20px;
                font-size: 0.9375rem;
            }

            .footer {
                padding: 56px 0 24px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B1E33;
            --primary-dark: #071422;
            --primary-light: #102A43;
            --accent: #00E5FF;
            --gold: #FFB800;
            --text-main: #E7EDF4;
            --text-sub: #A8B9C8;
            --text-muted: #6C8496;
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-border: rgba(255, 255, 255, 0.12);
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 229, 255, 0.12);
            --shadow-glow: 0 0 24px rgba(0, 229, 255, 0.45);
            --font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Inter, sans-serif;
            --section-padding: 96px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            background: radial-gradient(ellipse at 20% 0%, #102A43 0%, #0B1E33 45%, #071422 100%);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .25s;
        }
        a:hover {
            color: #7ff0ff;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
        }
        .section {
            padding: var(--section-padding) 0;
        }
        h1,
        h2,
        h3 {
            line-height: 1.3;
            letter-spacing: .5px;
        }
        h2 {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 600;
            margin-bottom: 16px;
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 12px;
            color: var(--text-sub);
        }
        .text-glow {
            color: var(--accent);
            text-shadow: 0 0 30px rgba(0, 229, 255, 0.4);
        }
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            letter-spacing: .5px;
            padding: 10px 24px;
            border: none;
            transition: all .3s ease;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, #00E5FF, #00A6C8);
            color: #071422;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary-custom:hover {
            color: #071422;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.6);
        }
        .btn-outline-custom {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-main);
        }
        .btn-outline-custom:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 229, 255, 0.08);
        }
        .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-sub);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: .8rem;
            font-weight: 500;
        }
        .badge-custom.gold {
            background: rgba(255, 184, 0, 0.12);
            border-color: rgba(255, 184, 0, 0.4);
            color: var(--gold);
        }
        .badge-custom.cyan {
            background: rgba(0, 229, 255, 0.1);
            border-color: rgba(0, 229, 255, 0.35);
            color: var(--accent);
        }

        /* ===== Navbar ===== */
        .navbar {
            height: 72px;
            background: rgba(11, 30, 51, 0.75) !important;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s;
        }
        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main) !important;
            letter-spacing: .5px;
            display: flex;
            align-items: center;
        }
        .navbar-brand .hth-highlight {
            color: var(--accent);
        }
        .navbar-nav {
            gap: 4px;
        }
        .navbar .nav-link {
            color: var(--text-sub);
            font-weight: 500;
            font-size: .95rem;
            padding: 8px 18px;
            border-radius: 10px;
            position: relative;
            transition: all .3s;
        }
        .navbar .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .navbar .nav-link.active {
            color: var(--accent);
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }
        .countdown-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 184, 0, 0.12);
            border: 1px solid rgba(255, 184, 0, 0.4);
            color: var(--gold);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: .8rem;
            font-weight: 500;
            white-space: nowrap;
        }
        .countdown-badge i {
            font-size: .45rem;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: .5;
                transform: scale(.85);
            }
        }
        .btn.nav-cta {
            background: linear-gradient(135deg, #00E5FF, #00A6C8);
            color: #071422;
            border-radius: 10px;
            font-size: .9rem;
            padding: 7px 20px;
            font-weight: 700;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
            transition: all .3s;
        }
        .btn.nav-cta:hover {
            box-shadow: 0 0 26px rgba(0, 229, 255, 0.5);
            transform: translateY(-1px);
            color: #071422;
        }
        .navbar-toggler {
            border-color: rgba(0, 229, 255, 0.5);
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300E5FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 170px 0 80px;
            background: linear-gradient(rgba(11, 30, 51, 0.85), rgba(7, 20, 34, 0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.15), transparent 70%);
            top: -200px;
            right: -100px;
            pointer-events: none;
        }
        .page-banner .breadcrumb-wrap {
            display: flex;
            justify-content: center;
            margin-bottom: 24px;
            font-size: .85rem;
        }
        .page-banner .breadcrumb-wrap a {
            color: var(--text-muted);
        }
        .page-banner .breadcrumb-wrap a:hover {
            color: var(--accent);
        }
        .page-banner .breadcrumb-wrap span {
            color: var(--text-sub);
            margin: 0 8px;
        }
        .page-banner .breadcrumb-wrap .current {
            color: var(--accent);
        }
        .page-banner h1 {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-banner h1 .highlight {
            color: var(--accent);
            text-shadow: 0 0 30px rgba(0, 229, 255, 0.4);
        }
        .page-banner .lead {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-sub);
            font-size: 1.05rem;
        }
        .page-banner .banner-tags {
            margin-top: 24px;
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        /* ===== Category Main Layout ===== */
        .category-main {
            padding: 64px 0 40px;
            position: relative;
        }
        .filter-sidebar {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            position: sticky;
            top: 96px;
            backdrop-filter: blur(8px);
        }
        .filter-sidebar .sidebar-title {
            color: var(--text-main);
            font-size: 1.1rem;
            font-weight: 600;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .filter-sidebar .sidebar-title i {
            color: var(--accent);
        }
        .filter-menu {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .filter-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 14px;
            margin-bottom: 4px;
            border-radius: 10px;
            color: var(--text-sub);
            cursor: pointer;
            transition: all .3s;
            border-left: 3px solid transparent;
            font-size: .92rem;
        }
        .filter-item i {
            font-size: .85rem;
            opacity: .7;
            transition: opacity .3s;
        }
        .filter-item:hover {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent);
        }
        .filter-item:hover i {
            opacity: 1;
        }
        .filter-item.active {
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent);
            border-left-color: var(--accent);
            font-weight: 500;
        }
        .filter-sidebar .sidebar-note {
            margin-top: 20px;
            padding: 16px 14px;
            background: rgba(255, 184, 0, 0.06);
            border: 1px solid rgba(255, 184, 0, 0.2);
            border-radius: 10px;
            color: var(--text-sub);
            font-size: .85rem;
            line-height: 1.6;
        }
        .filter-sidebar .sidebar-note i {
            color: var(--gold);
            margin-right: 6px;
        }

        /* ===== Tech List ===== */
        .tech-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .tech-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            margin-bottom: 24px;
            transition: all .35s ease;
            backdrop-filter: blur(6px);
        }
        .tech-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-hover);
        }
        .tech-card__img {
            flex: 0 0 260px;
            min-height: 210px;
            position: relative;
            overflow: hidden;
        }
        .tech-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .tech-card:hover .tech-card__img img {
            transform: scale(1.05);
        }
        .tech-card__img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 60%, rgba(7, 20, 34, 0.6));
            pointer-events: none;
        }
        .tech-card__content {
            flex: 1;
            padding: 26px 28px;
            display: flex;
            flex-direction: column;
        }
        .tech-card__content .card-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .tech-card__content h3 {
            color: var(--text-main);
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        .tech-card__content h3 a {
            color: var(--text-main);
        }
        .tech-card__content h3 a:hover {
            color: var(--accent);
        }
        .tech-card__content .card-desc {
            color: var(--text-sub);
            font-size: .92rem;
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .tech-card__content .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .tech-card__content .card-tags .badge-custom {
            font-size: .75rem;
            padding: 3px 12px;
        }
        .tech-card__content .card-footer-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 14px;
        }
        .tech-card__content .card-footer-bar .meta {
            color: var(--text-muted);
            font-size: .8rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .tech-card__content .card-footer-bar .btn-link-custom {
            color: var(--accent);
            font-size: .85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .3s;
        }
        .tech-card__content .card-footer-bar .btn-link-custom:hover {
            gap: 10px;
        }
        .load-more-wrap {
            text-align: center;
            margin-top: 8px;
            padding-bottom: 40px;
        }

        /* ===== Data Section ===== */
        .data-section {
            padding: 80px 0;
            background: linear-gradient(180deg, rgba(16, 42, 67, 0.3), rgba(7, 20, 34, 0.6));
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
            overflow: hidden;
        }
        .data-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.1), transparent 70%);
            bottom: -150px;
            left: -100px;
        }
        .data-item {
            text-align: center;
            padding: 32px 16px;
        }
        .data-item .number {
            font-size: clamp(2.4rem, 4vw, 3.2rem);
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            text-shadow: 0 0 30px rgba(0, 229, 255, 0.2);
        }
        .data-item .label {
            color: var(--text-sub);
            font-size: .9rem;
            margin-top: 8px;
            letter-spacing: 1px;
        }

        /* ===== Process Section ===== */
        .process-section {
            padding: var(--section-padding) 0;
        }
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin-top: 40px;
        }
        .process-item {
            display: flex;
            gap: 24px;
            position: relative;
            padding-bottom: 36px;
        }
        .process-item:last-child {
            padding-bottom: 0;
        }
        .process-item::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 62px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(0, 229, 255, 0.3), rgba(0, 229, 255, 0.05));
        }
        .process-item:last-child::before {
            display: none;
        }
        .process-item .step-num {
            flex: 0 0 62px;
            height: 62px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(0, 229, 255, 0.05));
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--accent);
            font-weight: 700;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
        }
        .process-item .step-content {
            flex: 1;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            padding: 20px 24px;
            transition: all .3s;
        }
        .process-item .step-content:hover {
            border-color: rgba(0, 229, 255, 0.3);
            background: rgba(255, 255, 255, 0.05);
        }
        .process-item .step-content h4 {
            color: var(--text-main);
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .process-item .step-content p {
            color: var(--text-sub);
            font-size: .88rem;
            margin: 0;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--section-padding) 0;
            background: rgba(7, 20, 34, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .accordion {
            margin-top: 40px;
        }
        .accordion-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px !important;
            margin-bottom: 16px;
            overflow: hidden;
        }
        .accordion-item:focus-within {
            border-color: rgba(0, 229, 255, 0.4);
        }
        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 500;
            font-size: .98rem;
            padding: 20px 24px;
            box-shadow: none;
        }
        .accordion-button::before {
            content: 'Q.';
            color: var(--accent);
            font-weight: 700;
            margin-right: 12px;
            font-size: 1rem;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300E5FF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }
        .accordion-body {
            color: var(--text-sub);
            font-size: .92rem;
            line-height: 1.75;
            padding: 8px 24px 22px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), transparent 60%), radial-gradient(circle at 70% 80%, rgba(0, 229, 255, 0.12), transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(2rem, 3.5vw, 2.8rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            max-width: 520px;
            margin: 0 auto 32px;
            color: var(--text-sub);
        }
        .cta-section .btn {
            margin: 0 8px 8px;
            min-width: 160px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 0;
            color: var(--text-sub);
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .footer .footer-brand .hth-highlight {
            color: var(--accent);
        }
        .footer .footer-text {
            font-size: .88rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 320px;
        }
        .footer .footer-title {
            color: var(--text-main);
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 10px;
        }
        .footer .footer-links a {
            color: var(--text-sub);
            font-size: .88rem;
            transition: all .3s;
        }
        .footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer .footer-contact {
            font-size: .88rem;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer .footer-contact i {
            color: var(--accent);
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
            font-size: .82rem;
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .category-main {
                padding-top: 40px;
            }
            .filter-sidebar {
                position: static;
                margin-bottom: 32px;
            }
            .tech-card {
                flex-direction: column;
            }
            .tech-card__img {
                flex: none;
                height: 220px;
            }
            .tech-card__img::after {
                background: linear-gradient(to top, rgba(7, 20, 34, 0.5), transparent);
            }
            .navbar-nav {
                padding: 16px 0;
                background: rgba(11, 30, 51, 0.95);
                border-radius: 12px;
                padding: 16px;
                margin-top: 8px;
            }
            .navbar {
                height: auto;
                min-height: 72px;
            }
            .countdown-badge {
                display: none;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: 56px;
            }
            .page-banner {
                padding: 140px 0 56px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .process-item {
                gap: 16px;
            }
            .process-item .step-num {
                flex: 0 0 48px;
                height: 48px;
                font-size: 1rem;
            }
            .process-item::before {
                left: 24px;
            }
            .tech-card__content {
                padding: 20px;
            }
            .data-item {
                padding: 20px 8px;
            }
            .data-item .number {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 576px) {
            .page-banner .banner-tags {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                display: block;
                width: 100%;
                text-align: center;
            }
            .tech-card__content .card-footer-bar {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            .cta-section .btn {
                display: block;
                width: 100%;
            }
        }

/* roulang page: article */
:root {
    --bg-deep: #071422;
    --bg-primary: #0B1E33;
    --bg-light: #102A43;
    --cyan: #00E5FF;
    --gold: #FFB800;
    --text-main: #E7EDF4;
    --text-secondary: #A8B9C8;
    --text-weak: #6C8496;
    --card-bg: rgba(255,255,255,0.06);
    --card-border: rgba(255,255,255,0.12);
    --font-stack: "PingFang SC", "Microsoft YaHei", "Segoe UI", Inter, sans-serif;
    --radius-card: 16px;
    --radius-btn: 12px;
    --radius-tag: 20px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
    --shadow-card-hover: 0 12px 48px rgba(0,229,255,0.12);
    --glow-cyan: 0 0 24px rgba(0,229,255,0.45);
    --nav-height: 72px;
    --section-space: 96px;
    --ease: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-stack);
    background: radial-gradient(ellipse at 50% -20%, #102A43 0%, #0B1E33 45%, #071422 100%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

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

::selection {
    background: rgba(0,229,255,0.25);
    color: var(--text-main);
}

a:focus-visible, button:focus-visible, .btn:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    box-shadow: none;
}

@media (min-width: 1400px) {
    .container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
        max-width: 1280px;
    }
}

section[id], footer[id] {
    scroll-margin-top: calc(var(--nav-height) + 12px);
}

/* ===== 导航 ===== */
.navbar {
    min-height: var(--nav-height);
    background: rgba(11,30,51,0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 0;
    z-index: 1030;
}

.navbar-brand {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.5px;
    white-space: nowrap;
    transition: color var(--ease);
}

.navbar-brand:hover {
    color: var(--text-main);
}

.hth-highlight {
    color: var(--cyan);
    font-weight: 800;
}

.navbar-nav {
    gap: 0.5rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-btn);
    position: relative;
    transition: color var(--ease);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 1rem;
    right: 1rem;
    bottom: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--cyan);
    transform: scaleX(0);
    transition: transform var(--ease);
}

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

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

.nav-link.active {
    color: var(--text-main) !important;
}

.countdown-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gold);
    border: 1px solid rgba(255,184,0,0.4);
    background: rgba(255,184,0,0.08);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-tag);
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.countdown-badge i {
    font-size: 0.5rem;
    color: var(--gold);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.btn {
    border-radius: var(--radius-btn);
    font-weight: 600;
    transition: all var(--ease);
}

.nav-cta {
    background: linear-gradient(135deg, #00E5FF, #00B4CC);
    color: #071422 !important;
    border: none;
    padding: 0.55rem 1.4rem;
    box-shadow: var(--glow-cyan);
    font-weight: 700;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(0,229,255,0.6);
    color: #071422 !important;
}

.navbar-toggler {
    border: 1px solid rgba(0,229,255,0.4);
    padding: 0.35rem 0.6rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(0,229,255,0.25);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,229,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(11,30,51,0.98);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: var(--radius-card);
        padding: 1rem;
        margin-top: 0.75rem;
        box-shadow: 0 16px 40px rgba(0,0,0,0.4);
    }

    .navbar-nav {
        align-items: flex-start;
    }

    .navbar-collapse .d-flex {
        flex-wrap: wrap;
        width: 100%;
        padding-top: 0.75rem;
        border-top: 1px solid rgba(255,255,255,0.08);
    }

    .countdown-badge {
        display: none !important;
    }
}

/* ===== 文章头部 ===== */
.article-hero {
    position: relative;
    padding: 148px 0 56px;
    background: linear-gradient(180deg, rgba(7,20,34,0.82), rgba(11,30,51,0.6)), url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    overflow: hidden;
}

.article-hero::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 640px;
    height: 320px;
    background: radial-gradient(circle, rgba(0,229,255,0.16), transparent 70%);
    pointer-events: none;
}

.article-hero .container {
    position: relative;
    z-index: 1;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--text-weak);
    margin-bottom: 1.5rem;
}

.article-breadcrumb a {
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: color var(--ease);
}

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

.article-breadcrumb i {
    font-size: 0.65rem;
    color: var(--text-weak);
}

.article-breadcrumb .current {
    color: var(--cyan);
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.category-badge {
    display: inline-block;
    background: rgba(0,229,255,0.12);
    border: 1px solid rgba(0,229,255,0.35);
    color: var(--cyan);
    padding: 0.35rem 1.2rem;
    border-radius: var(--radius-tag);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.article-hero h1 {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 1.2rem;
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.article-meta i {
    color: var(--cyan);
    font-size: 0.85rem;
}

/* ===== 文章主体 ===== */
.article-section {
    padding: 56px 0 72px;
}

.article-layout {
    max-width: 760px;
    margin: 0 auto;
}

.article-body {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-card);
    padding: 48px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-card);
}

.article-body h2 {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 2rem 0 1rem;
    padding-left: 0.75rem;
    border-left: 3px solid var(--cyan);
}

.article-body h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 1.5rem 0 0.75rem;
}

.article-body h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 1.2rem 0 0.5rem;
}

.article-body p {
    color: var(--text-secondary);
    margin-bottom: 1.1rem;
    line-height: 1.85;
}

.article-body a {
    color: var(--cyan);
    border-bottom: 1px solid rgba(0,229,255,0.3);
    transition: all var(--ease);
}

.article-body a:hover {
    border-bottom-color: var(--cyan);
}

.article-body ul,
.article-body ol {
    color: var(--text-secondary);
    margin: 1rem 0 1.2rem;
    padding-left: 1.5rem;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 0.5rem;
}

.article-body ul li::marker {
    color: var(--cyan);
}

.article-body ol li::marker {
    color: var(--cyan);
    font-weight: 600;
}

.article-body blockquote {
    background: rgba(0,229,255,0.05);
    border-left: 3px solid var(--cyan);
    padding: 1rem 1.25rem;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    font-style: italic;
    margin: 1.5rem 0;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1.5rem 0;
    border: 1px solid rgba(255,255,255,0.08);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-radius: 12px;
    overflow: hidden;
}

.article-body table th {
    background: rgba(0,229,255,0.08);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255,255,255,0.08);
    font-weight: 600;
}

.article-body table td {
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255,255,255,0.08);
}

.article-body code {
    background: rgba(0,229,255,0.08);
    color: var(--cyan);
    padding: 0.15rem 0.5rem;
    border-radius: 6px;
    font-size: 0.85rem;
}

/* ===== 文末标签与分享 ===== */
.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 40px;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-tag);
    padding: 0.3rem 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all var(--ease);
}

.tag:hover {
    color: var(--gold);
    border-color: var(--gold);
}

.article-share {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-weak);
    font-size: 0.85rem;
}

.share-link {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--text-secondary);
    transition: all var(--ease);
}

.share-link:hover {
    color: var(--cyan);
    border-color: var(--cyan);
    background: rgba(0,229,255,0.08);
    transform: translateY(-2px);
}

/* ===== 上下篇 ===== */
.article-pager {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 56px;
}

.pager-card {
    flex: 1 1 280px;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-card);
    padding: 1.25rem 1.5rem;
    transition: all var(--ease);
}

.pager-card:hover {
    border-color: rgba(0,229,255,0.4);
    background: rgba(0,229,255,0.05);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
}

.pager-card.next {
    text-align: right;
}

.pager-label {
    color: var(--text-weak);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

.pager-title {
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color var(--ease);
}

.pager-card:hover .pager-title {
    color: var(--cyan);
}

/* ===== 延伸阅读 ===== */
.section-related {
    padding: 72px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 2.5vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 2.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--cyan), transparent);
}

.news-card {
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    height: 100%;
    box-shadow: var(--shadow-card);
    transition: all var(--ease);
}

.news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,229,255,0.35);
    box-shadow: var(--shadow-card-hover);
}

.news-cover {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

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

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

.news-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(7,20,34,0.8);
    backdrop-filter: blur(6px);
    color: var(--cyan);
    border: 1px solid rgba(0,229,255,0.35);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.8rem;
    border-radius: var(--radius-tag);
}

.news-body {
    padding: 1.25rem 1.5rem 1.5rem;
}

.news-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--ease);
}

.news-card:hover .news-body h3 {
    color: var(--cyan);
}

.news-body p {
    color: var(--text-weak);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-weak);
}

.news-meta i {
    color: var(--cyan);
    margin-right: 0.3rem;
    font-size: 0.75rem;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--cyan);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ===== 未找到 ===== */
.not-found {
    text-align: center;
    padding: 80px 24px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
}

.not-found-icon {
    font-size: 3rem;
    color: var(--gold);
    margin-bottom: 1.5rem;
    opacity: 0.7;
}

.not-found h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.not-found p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    text-align: center;
    padding: 80px 0;
    background: url(/assets/images/backpic/back-3.webp) center/cover no-repeat;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7,20,34,0.92), rgba(16,42,67,0.85));
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--text-main);
}

.cta-desc {
    color: var(--text-secondary);
    max-width: 640px;
    margin: 1rem auto 2rem;
}

.btn-primary {
    background: linear-gradient(135deg, #00E5FF, #00B4CC);
    border: none;
    color: #071422 !important;
    font-weight: 700;
    box-shadow: var(--glow-cyan);
    padding: 0.7rem 1.8rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(0,229,255,0.65);
    color: #071422 !important;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 0 16px rgba(0,229,255,0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--text-main) !important;
    padding: 0.7rem 1.8rem;
}

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

.btn-lg {
    padding: 0.9rem 2.4rem;
    font-size: 1.05rem;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 64px 0 0;
}

.footer-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.footer-text {
    color: var(--text-weak);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-title {
    color: var(--text-main);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.6rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all var(--ease);
}

.footer-links a:hover {
    color: var(--cyan);
    padding-left: 4px;
}

.footer-contact div {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.footer-contact i {
    color: var(--cyan);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 1.5rem 0;
    margin-top: 48px;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-weak);
    font-size: 0.85rem;
    margin: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 767.98px) {
    :root {
        --section-space: 56px;
    }

    .article-hero {
        padding: 120px 0 40px;
    }

    .article-hero h1 {
        font-size: 1.75rem;
    }

    .article-meta {
        gap: 0.75rem;
        font-size: 0.85rem;
    }

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

    .article-body {
        padding: 32px 24px;
    }

    .section-related {
        padding: 56px 0;
    }
}

@media (max-width: 575.98px) {
    .article-body {
        padding: 24px 16px;
    }

    .article-breadcrumb .current {
        max-width: 180px;
    }

    .article-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .pager-card {
        min-width: 100%;
    }

    .cta-section {
        padding: 56px 0;
    }

    .cta-section .btn-lg {
        display: block;
        width: 100%;
        margin: 0.5rem 0 0 !important;
    }

    .nav-cta {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

/* roulang page: category3 */
:root {
            --primary: #0B1E33;
            --primary-deep: #071422;
            --primary-light: #102A43;
            --accent: #00E5FF;
            --accent-rgb: 0, 229, 255;
            --gold: #FFB800;
            --gold-rgb: 255, 184, 0;
            --text-main: #E7EDF4;
            --text-sub: #A8B9C8;
            --text-muted: #6C8496;
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-border: rgba(255, 255, 255, 0.12);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 48px rgba(0, 229, 255, 0.12);
            --shadow-btn: 0 0 24px rgba(0, 229, 255, 0.45);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-tag: 20px;
            --space-section: 96px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Segoe UI", Inter, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: radial-gradient(ellipse at 20% 0%, var(--primary-light) 0%, var(--primary) 45%, var(--primary-deep) 100%);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.75;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: #66efff;
        }

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

        .container {
            max-width: 1280px;
        }

        .section {
            padding: var(--space-section) 0;
            position: relative;
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head .eyebrow {
            display: inline-block;
            font-size: 0.875rem;
            letter-spacing: 2px;
            color: var(--accent);
            border: 1px solid rgba(var(--accent-rgb), 0.3);
            background: rgba(var(--accent-rgb), 0.08);
            padding: 6px 18px;
            border-radius: var(--radius-tag);
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-sub);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ========== 导航 ========== */
        .navbar {
            background: rgba(11, 30, 51, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
            z-index: 1060;
        }

        .navbar .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .navbar .navbar-brand .hth-highlight {
            color: var(--accent);
            text-shadow: 0 0 16px rgba(var(--accent-rgb), 0.6);
        }

        .navbar .navbar-brand:hover {
            color: var(--text-main);
        }

        .navbar .navbar-nav .nav-link {
            color: var(--text-sub);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 10px 16px !important;
            margin: 0 4px;
            border-radius: 8px;
            position: relative;
            transition: color 0.3s ease, background 0.3s ease;
        }

        .navbar .navbar-nav .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.08);
        }

        .navbar .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.8);
        }

        .countdown-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--gold);
            border: 1px solid rgba(var(--gold-rgb), 0.5);
            background: rgba(var(--gold-rgb), 0.08);
            padding: 5px 14px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }

        .countdown-badge i {
            font-size: 0.5rem;
            color: var(--gold);
            animation: pulse 1.6s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }

        .navbar-toggler {
            border: 1px solid rgba(var(--accent-rgb), 0.4);
            color: var(--accent);
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.3);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,229,255,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ========== 按钮 ========== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 12px 28px;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            border: none;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, #00E5FF 0%, #00B8D4 100%);
            color: #071422;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            color: #071422;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(var(--accent-rgb), 0.6);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(var(--accent-rgb), 0.4);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
        }

        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.06);
            transform: translateY(-2px);
        }

        .btn-outline-custom:active {
            transform: translateY(0);
        }

        .btn-lg-custom {
            padding: 16px 40px;
            font-size: 1rem;
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding-top: 160px;
            padding-bottom: 80px;
            background: linear-gradient(180deg, rgba(11, 30, 51, 0.6) 0%, rgba(7, 20, 34, 0.85) 100%);
            overflow: hidden;
        }

        .page-hero .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: -2;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(11, 30, 51, 0.55) 0%, rgba(7, 20, 34, 0.88) 100%);
            z-index: -1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(var(--accent-rgb), 0.15) 0%, transparent 70%);
            z-index: -1;
        }

        .page-hero .hero-content {
            text-align: center;
            max-width: 820px;
            margin: 0 auto;
        }

        .page-hero .hero-tag {
            display: inline-block;
            font-size: 0.85rem;
            color: var(--gold);
            border: 1px solid rgba(var(--gold-rgb), 0.4);
            background: rgba(var(--gold-rgb), 0.08);
            padding: 5px 16px;
            border-radius: var(--radius-tag);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .page-hero h1 {
            font-size: clamp(2.5rem, 4.5vw, 3.5rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            text-shadow: 0 4px 32px rgba(0, 0, 0, 0.4);
        }

        .page-hero h1 .accent-text {
            color: var(--accent);
            text-shadow: 0 0 24px rgba(var(--accent-rgb), 0.5);
        }

        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-sub);
            max-width: 60ch;
            margin: 0 auto 36px;
        }

        .hero-breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .hero-breadcrumb a {
            color: var(--text-sub);
        }

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

        .hero-breadcrumb span {
            color: var(--text-muted);
        }

        /* ========== 时间轴 ========== */
        .timeline-section {
            background: rgba(7, 20, 34, 0.35);
            position: relative;
        }

        .timeline {
            position: relative;
            padding: 0;
            margin: 0;
            list-style: none;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, transparent, rgba(var(--accent-rgb), 0.5), rgba(var(--accent-rgb), 0.8), rgba(var(--accent-rgb), 0.5), transparent);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 0 48px 64px;
            margin: 0;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item .timeline-marker {
            position: absolute;
            top: 8px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-deep);
            border: 2px solid var(--accent);
            box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--accent);
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-marker {
            right: -24px;
        }

        .timeline-item:nth-child(even) .timeline-marker {
            left: -24px;
        }

        .timeline-item .timeline-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
        }

        .timeline-item .timeline-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(var(--accent-rgb), 0.4);
        }

        .timeline-item .timeline-stage {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--gold);
            background: rgba(var(--gold-rgb), 0.1);
            border: 1px solid rgba(var(--gold-rgb), 0.3);
            padding: 3px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 12px;
        }

        .timeline-item h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .timeline-item .timeline-time {
            font-size: 0.85rem;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }

        .timeline-item p {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .timeline-item .timeline-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: flex-end;
        }

        .timeline-item:nth-child(even) .timeline-tags {
            justify-content: flex-start;
        }

        .timeline-item .tag {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--text-sub);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 3px 12px;
            border-radius: var(--radius-tag);
            transition: all 0.3s ease;
        }

        .timeline-item .tag:hover {
            color: var(--gold);
            border-color: var(--gold);
            background: rgba(var(--gold-rgb), 0.08);
        }

        .timeline-item .timeline-img {
            margin-top: 16px;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .timeline-item .timeline-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }

        .timeline-item .timeline-img:hover img {
            transform: scale(1.05);
        }

        /* ========== 场景卡片 ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scene-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .scene-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--gold));
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .scene-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(var(--accent-rgb), 0.35);
        }

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

        .scene-card .scene-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.1);
            border: 1px solid rgba(var(--accent-rgb), 0.2);
            margin-bottom: 18px;
        }

        .scene-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .scene-card p {
            font-size: 0.9rem;
            color: var(--text-sub);
            margin-bottom: 0;
        }

        .scene-card .scene-link {
            display: inline-block;
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 500;
            transition: letter-spacing 0.3s ease;
        }

        .scene-card .scene-link:hover {
            letter-spacing: 1px;
        }

        /* ========== 数据 ========== */
        .stats-section {
            background: linear-gradient(135deg, rgba(16, 42, 67, 0.9) 0%, rgba(7, 20, 34, 0.95) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin: 0;
        }

        .stats-section .stat-item {
            text-align: center;
            padding: 40px 16px;
        }

        .stats-section .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            text-shadow: 0 0 24px rgba(var(--accent-rgb), 0.4);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stats-section .stat-label {
            font-size: 0.95rem;
            color: var(--text-sub);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: rgba(7, 20, 34, 0.25);
        }

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

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item:has(.accordion-collapse.show) {
            border-color: rgba(var(--accent-rgb), 0.5);
            box-shadow: 0 0 24px rgba(var(--accent-rgb), 0.08);
        }

        .faq-item .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 500;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            text-align: left;
        }

        .faq-item .accordion-button::before {
            content: 'Q.';
            font-weight: 700;
            color: var(--accent);
            margin-right: 12px;
            flex-shrink: 0;
        }

        .faq-item .accordion-button:not(.collapsed) {
            background: rgba(var(--accent-rgb), 0.04);
            color: var(--text-main);
            box-shadow: none;
        }

        .faq-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
        }

        .faq-item .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='rgba(0,229,255,1)'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .faq-item .accordion-body {
            color: var(--text-sub);
            padding: 0 24px 20px;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-item .accordion-body .tag {
            display: inline-block;
            font-size: 0.78rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            margin-right: 6px;
            margin-top: 10px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 110px 0;
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 50%, var(--primary-deep) 100%);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(var(--accent-rgb), 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-section .cta-heading {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 600;
            margin-bottom: 16px;
        }

        .cta-section .cta-desc {
            color: var(--text-sub);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 36px;
        }

        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: #071422;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 70px 0 30px;
        }

        .footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .footer .footer-brand .hth-highlight {
            color: var(--accent);
            text-shadow: 0 0 16px rgba(var(--accent-rgb), 0.5);
        }

        .footer .footer-text {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

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

        .footer .footer-links li {
            margin-bottom: 10px;
        }

        .footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer .footer-contact {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: grid;
            gap: 10px;
        }

        .footer .footer-contact i {
            color: var(--accent);
            width: 22px;
        }

        .footer-top {
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 24px;
        }

        .footer-bottom {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            text-align: center;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar .navbar-collapse {
                background: rgba(11, 30, 51, 0.97);
                border-radius: 0 0 16px 16px;
                padding: 16px;
                border: 1px solid rgba(255, 255, 255, 0.06);
                border-top: none;
            }

            .navbar .navbar-nav {
                margin-top: 12px;
                margin-bottom: 12px;
            }

            .navbar .navbar-nav .nav-link {
                padding: 12px 16px !important;
            }

            .navbar .navbar-nav .nav-link.active::after {
                display: none;
            }

            .navbar .navbar-nav .nav-link.active {
                border-left: 3px solid var(--accent);
                border-radius: 4px;
            }

            .page-hero {
                padding-top: 130px;
            }

            .timeline::before {
                left: 24px;
            }

            .timeline-item {
                width: 100%;
                left: 0 !important;
                text-align: left !important;
                padding-left: 72px;
                padding-right: 16px;
            }

            .timeline-item .timeline-marker {
                left: 0 !important;
                right: auto !important;
                width: 44px;
                height: 44px;
                font-size: 1rem;
            }

            .timeline-item:nth-child(odd) .timeline-card,
            .timeline-item:nth-child(even) .timeline-card {
                text-align: left;
            }

            .timeline-item .timeline-tags {
                justify-content: flex-start !important;
            }

            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --space-section: 56px;
            }

            .page-hero {
                min-height: 460px;
                padding-top: 110px;
                padding-bottom: 60px;
            }

            .page-hero h1 {
                font-size: clamp(1.9rem, 6vw, 2.5rem);
            }

            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }

            .btn-lg-custom {
                padding: 14px 28px;
                font-size: 0.95rem;
                width: auto;
            }

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

            .stats-section .stat-number {
                font-size: 2.3rem;
            }

            .footer .footer-top .row > div {
                margin-bottom: 20px;
            }
        }

        @media (max-width: 575.98px) {
            .page-hero {
                padding-top: 100px;
                min-height: 420px;
            }

            .page-hero .hero-breadcrumb {
                flex-wrap: wrap;
            }

            .btn {
                width: 100%;
                text-align: center;
            }

            .cta-section .cta-buttons {
                flex-direction: column;
            }

            .cta-section .cta-buttons .btn {
                width: 100%;
            }

            .timeline-item {
                padding-left: 64px;
                padding-right: 12px;
                padding-bottom: 48px;
            }

            .timeline-item .timeline-card {
                padding: 20px;
            }

            .timeline-item .timeline-img img {
                height: 130px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

        @media (min-width: 992px) {
            .navbar .nav-link.active {
                background: rgba(var(--accent-rgb), 0.08) !important;
            }
        }