/* roulang page: index */
:root {
            --bg-primary: #060A14;
            --bg-secondary: #081020;
            --bg-elevated: #0B1325;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --border-glass: 1px solid rgba(255, 255, 255, 0.08);
            --primary: #1D78FF;
            --primary-light: #3AA6FF;
            --accent: #00E0C6;
            --gold: #D4AF6A;
            --text-main: #EAF1FA;
            --text-secondary: #9BAFBF;
            --text-muted: #64788F;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --glow-primary: 0 0 28px rgba(29, 120, 255, 0.40);
            --glow-accent: 0 0 24px rgba(0, 224, 198, 0.30);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        .btn:focus,
        .btn:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(0, 224, 198, 0.15);
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 90px 0;
        }

        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title-wrap .section-overline {
            display: inline-block;
            font-size: 14px;
            letter-spacing: 3px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .section-title-wrap h2 {
            font-size: clamp(26px, 3.6vw, 40px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-title-wrap p {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            height: 72px;
            background: rgba(6, 10, 20, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 16, 32, 0.88);
            backdrop-filter: blur(16px) saturate(160%);
            -webkit-backdrop-filter: blur(16px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .site-header.scrolled::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.6;
        }

        .site-header .navbar {
            height: 72px;
            padding: 0;
            background: transparent;
        }

        .site-header .navbar-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 4px 16px rgba(29, 120, 255, 0.4);
            flex-shrink: 0;
        }

        .site-header .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
            background: transparent;
        }

        .site-header .navbar-nav .nav-link:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.04);
        }

        .site-header .navbar-nav .nav-link.active {
            color: var(--text-main);
        }

        .site-header .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 46%;
            height: 2px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 224, 198, 0.6);
        }

        .site-header .btn-primary {
            font-size: 14px;
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            width: 44px;
            height: 44px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-toggler-icon {
            background-image: none !important;
            position: relative;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            display: inline-block;
            transition: var(--transition);
            box-shadow: 0 -8px 0 var(--text-main), 0 8px 0 var(--text-main);
            border-radius: 99px;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
            background: var(--accent);
            box-shadow: 0 0 0 var(--accent);
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            transform: rotate(45deg);
            border-radius: 99px;
        }

        .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            transform: rotate(-45deg);
            border-radius: 99px;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(6, 10, 20, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 16px;
                padding: 24px;
                margin-top: 16px;
                border: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
            }
            .site-header .navbar-nav .nav-link {
                font-size: 18px;
                padding: 12px 16px;
            }
            .site-header .navbar-nav .nav-link.active::after {
                width: 30px;
                bottom: 8px;
            }
            .site-header .btn-primary {
                margin-top: 16px;
                width: 100%;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            padding: 12px 28px;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            line-height: 1.4;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #00C6B0);
            color: #fff;
            box-shadow: 0 8px 30px rgba(29, 120, 255, 0.35);
            border: none;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #2a86ff, #10dcc2);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(29, 120, 255, 0.5), 0 0 24px rgba(0, 224, 198, 0.2);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 4px 16px rgba(29, 120, 255, 0.4);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #EAF1FA;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 224, 198, 0.15);
        }

        .btn-outline-light:active {
            transform: scale(0.97);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 17px;
            border-radius: 14px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            background-image: linear-gradient(180deg, rgba(6, 10, 20, 0.2), rgba(6, 10, 20, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 120px 0 80px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, var(--bg-primary));
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 99px;
            padding: 6px 18px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 12px;
        }

        .hero-section h1 {
            font-size: clamp(32px, 5vw, 54px);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-main);
            max-width: 720px;
            margin-bottom: 20px;
        }

        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 24px;
        }

        .hero-stats .stat-item {
            text-align: left;
        }

        .hero-stats .stat-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.2;
        }

        .hero-stats .stat-value span {
            color: var(--accent);
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-phone {
            position: relative;
            width: 280px;
            height: 560px;
            border-radius: 36px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow:
                0 24px 60px rgba(0, 0, 0, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
            padding: 12px;
            overflow: hidden;
        }

        .hero-phone::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 0 0 99px 99px;
            z-index: 3;
        }

        .hero-phone img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 28px;
        }

        .hero-glow {
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(29, 120, 255, 0.4), transparent 70%);
            filter: blur(60px);
            z-index: -1;
        }

        .hero-glow.glow-1 {
            top: 20%;
            left: -10%;
        }

        .hero-glow.glow-2 {
            bottom: 10%;
            right: -5%;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.25), transparent 70%);
        }

        @media (max-width: 991.98px) {
            .hero-section {
                min-height: auto;
                padding-top: 140px;
                padding-bottom: 60px;
            }
            .hero-visual {
                margin-top: 48px;
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .hero-section {
                padding-top: 130px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 24px;
            }
        }

        /* ===== 价值卡组 ===== */
        .values-section {
            background: var(--bg-primary);
            position: relative;
        }

        .values-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .value-card {
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            backdrop-filter: blur(16px) saturate(160%);
            -webkit-backdrop-filter: blur(16px) saturate(160%);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .value-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }

        .value-card:hover {
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-hover), 0 0 20px rgba(0, 224, 198, 0.12);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .value-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(29, 120, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary-light);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .value-card:hover .value-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 8px 20px rgba(29, 120, 255, 0.35);
        }

        .value-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .value-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 991.98px) {
            .values-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .values-grid {
                grid-template-columns: 1fr;
            }
            .value-card {
                padding: 28px 20px;
            }
        }

        /* ===== 功能截图轮播 ===== */
        .shots-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .shots-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse at center, rgba(29, 120, 255, 0.15), transparent 70%);
            transform: translateX(-50%);
            pointer-events: none;
        }

        .carousel-wrap {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 50px;
        }

        .carousel-wrap .carousel-item {
            transition: transform 0.6s ease, opacity 0.6s ease;
        }

        .phone-frame {
            position: relative;
            width: 280px;
            height: 560px;
            margin: 0 auto;
            border-radius: 36px;
            background: linear-gradient(145deg, #1a2333, #0d1522);
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow:
                0 24px 60px rgba(0, 0, 0, 0.5),
                0 0 40px rgba(29, 120, 255, 0.08);
            padding: 14px;
            position: relative;
        }

        .phone-frame::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 90px;
            height: 5px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 0 0 99px 99px;
            z-index: 10;
        }

        .phone-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 24px;
            display: block;
        }

        .carousel-wrap .carousel-control-prev,
        .carousel-wrap .carousel-control-next {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            top: 50%;
            transform: translateY(-50%);
            opacity: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            font-size: 16px;
            color: var(--text-secondary);
        }

        .carousel-wrap .carousel-control-prev:hover,
        .carousel-wrap .carousel-control-next:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 0 20px rgba(29, 120, 255, 0.4);
        }

        .carousel-wrap .carousel-control-prev {
            left: 0;
        }

        .carousel-wrap .carousel-control-next {
            right: 0;
        }

        .carousel-wrap .carousel-indicators {
            position: static;
            margin-top: 24px;
            gap: 8px;
        }

        .carousel-wrap .carousel-indicators button {
            width: 16px;
            height: 6px;
            border-radius: 99px;
            background: rgba(255, 255, 255, 0.2);
            border: none;
            opacity: 1;
            transition: var(--transition);
            margin: 0;
            flex: 0 0 auto;
        }

        .carousel-wrap .carousel-indicators button.active {
            width: 32px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 224, 198, 0.4);
        }

        .shot-thumbnails {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 20px;
        }

        .shot-thumb {
            width: 64px;
            height: 64px;
            border-radius: 12px;
            overflow: hidden;
            cursor: pointer;
            opacity: 0.5;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .shot-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .shot-thumb.active {
            opacity: 1;
            border-color: var(--accent);
            box-shadow: 0 0 16px rgba(0, 224, 198, 0.3);
        }

        @media (max-width: 575.98px) {
            .carousel-wrap {
                padding: 0 20px;
            }
            .phone-frame {
                width: 230px;
                height: 460px;
            }
            .shot-thumbnails {
                display: none;
            }
        }

        /* ===== 系统要求 ===== */
        .sysreq-section {
            background: var(--bg-primary);
        }

        .sysreq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .sysreq-card {
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }

        .sysreq-card.recommended {
            border-color: rgba(0, 224, 198, 0.4);
            box-shadow: var(--shadow-card), 0 0 30px rgba(0, 224, 198, 0.1);
        }

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

        .sysreq-card.recommended:hover {
            box-shadow: var(--shadow-card-hover), 0 0 30px rgba(0, 224, 198, 0.15);
        }

        .sysreq-card .card-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
        }

        .sysreq-card .card-head .icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(29, 120, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary-light);
        }

        .sysreq-card.recommended .card-head .icon {
            background: rgba(0, 224, 198, 0.12);
            color: var(--accent);
        }

        .sysreq-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
        }

        .sysreq-card .tag-recommend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--accent);
            background: rgba(0, 224, 198, 0.1);
            padding: 4px 12px;
            border-radius: 99px;
            margin-left: auto;
            white-space: nowrap;
        }

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

        .sysreq-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 15px;
        }

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

        .sysreq-list .label {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .sysreq-list .value {
            color: var(--text-main);
            font-weight: 500;
            text-align: right;
        }

        @media (max-width: 767.98px) {
            .sysreq-grid {
                grid-template-columns: 1fr;
            }
            .sysreq-card {
                padding: 24px;
            }
        }

        /* ===== 评价墙 ===== */
        .testimonials-section {
            background: var(--bg-secondary);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .testimonial-stars {
            color: var(--gold);
            font-size: 15px;
            letter-spacing: 2px;
        }

        .testimonial-stars .far {
            color: var(--text-muted);
        }

        .testimonial-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            flex: 1;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
        }

        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            background: linear-gradient(135deg, rgba(29, 120, 255, 0.7), rgba(0, 224, 198, 0.6));
            transition: var(--transition);
        }

        .testimonial-card:hover .testimonial-avatar {
            border: 2px solid var(--primary-light);
            box-shadow: 0 0 16px rgba(29, 120, 255, 0.4);
        }

        .testimonial-user .user-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.3;
        }

        .testimonial-user .user-meta {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.3;
        }

        @media (max-width: 991.98px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-card {
                padding: 22px;
            }
        }

        /* ===== 下载按钮组 ===== */
        .download-section {
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .download-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 36px 36px;
            pointer-events: none;
        }

        .download-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.5;
        }

        .download-wrap {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 960px;
            margin: 0 auto;
        }

        .download-wrap h2 {
            font-size: clamp(26px, 3.6vw, 40px);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .download-wrap p.lead {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 40px;
        }

        .download-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-bottom: 32px;
        }

        .download-btn-item {
            width: 220px;
            height: 68px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), #00C6B0);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            box-shadow: 0 8px 30px rgba(29, 120, 255, 0.35);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-family: var(--font-family);
        }

        .download-btn-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(29, 120, 255, 0.5), 0 0 24px rgba(0, 224, 198, 0.25);
            filter: brightness(1.1);
            color: #fff;
        }

        .download-btn-item:active {
            transform: scale(0.97);
            box-shadow: 0 4px 16px rgba(29, 120, 255, 0.4);
        }

        .download-btn-item i {
            font-size: 28px;
        }

        .download-btn-item .d-btn-text {
            text-align: left;
            line-height: 1.35;
        }

        .download-btn-item .d-btn-title {
            font-size: 16px;
            font-weight: 700;
            display: block;
        }

        .download-btn-item .d-btn-sub {
            font-size: 12px;
            opacity: 0.85;
            display: block;
            font-weight: 400;
        }

        .qrcode-wrap {
            margin-top: 20px;
        }

        .qrcode-box {
            width: 140px;
            height: 140px;
            background: #fff;
            border-radius: 16px;
            margin: 0 auto 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            position: relative;
        }

        .qrcode-box::before {
            content: '';
            position: absolute;
            inset: 16px;
            background-image:
                linear-gradient(rgba(0, 0, 0, 0.8) 2px, transparent 2px),
                linear-gradient(90deg, rgba(0, 0, 0, 0.8) 2px, transparent 2px);
            background-size: 12px 12px;
            border-radius: 6px;
            opacity: 0.9;
            -webkit-mask-image: radial-gradient(circle at center, transparent 18px, black 20px);
            mask-image: radial-gradient(circle at center, transparent 18px, black 20px);
        }

        .qrcode-box::after {
            content: '';
            position: absolute;
            top: 18px;
            left: 18px;
            right: 18px;
            bottom: 18px;
            border: 2px solid rgba(0, 0, 0, 0.8);
            border-radius: 8px;
        }

        .qrcode-wrap p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .safe-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            margin-top: 12px;
            padding: 8px 20px;
            border-radius: 99px;
            background: rgba(0, 224, 198, 0.06);
            border: 1px solid rgba(0, 224, 198, 0.15);
        }

        .safe-line i {
            color: var(--accent);
        }

        @media (max-width: 575.98px) {
            .download-buttons {
                flex-direction: column;
                align-items: center;
            }
            .download-btn-item {
                width: 100%;
                max-width: 340px;
            }
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--bg-secondary);
        }

        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .news-header h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            margin: 0;
        }

        .news-header .more-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-header .more-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 16px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }

        .news-item:hover {
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .news-thumb {
            width: 160px;
            height: 110px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: #0d1522;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
        }

        .news-badge {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            color: var(--accent);
            background: rgba(0, 224, 198, 0.1);
            border-radius: 99px;
            padding: 2px 10px;
            width: fit-content;
            line-height: 1.5;
        }

        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            margin: 0 0 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-time {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }

        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-lg);
            color: var(--text-muted);
            font-size: 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .news-empty i {
            font-size: 40px;
            color: var(--text-muted);
            opacity: 0.4;
        }

        @media (max-width: 767.98px) {
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 180px;
            }
            .news-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 575.98px) {
            .news-thumb {
                height: 150px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-primary);
        }

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

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .faq-accordion .accordion-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 255, 255, 0.12);
        }

        .faq-accordion .accordion-header {
            background: transparent;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            box-shadow: none;
            font-family: var(--font-family);
            line-height: 1.5;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--accent);
            transition: var(--transition);
            width: auto;
            height: auto;
            font-size: 14px;
            flex-shrink: 0;
            margin-left: auto;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--text-main);
            background: rgba(29, 120, 255, 0.06);
        }

        .faq-num {
            font-size: 14px;
            color: var(--primary-light);
            font-weight: 700;
            flex-shrink: 0;
            min-width: 28px;
            line-height: 1.4;
        }

        .faq-accordion .accordion-body {
            padding: 4px 24px 24px 66px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            background: transparent;
        }

        @media (max-width: 575.98px) {
            .faq-accordion .accordion-body {
                padding: 4px 20px 20px 46px;
            }
            .faq-accordion .accordion-button {
                padding: 16px 18px;
                font-size: 15px;
            }
        }

        /* ===== 页脚前CTA ===== */
        .cta-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(180deg, rgba(6, 10, 20, 0.3), rgba(6, 10, 20, 0.9)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.5;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            opacity: 0.4;
        }

        .cta-wrap {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-wrap h2 {
            font-size: clamp(24px, 3.4vw, 38px);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-wrap p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050A12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 60px;
        }

        .site-footer::before {
            content: '';
            display: block;
            height: 1px;
            margin-top: -1px;
            background: linear-gradient(90deg, transparent, rgba(0, 224, 198, 0.4), transparent);
        }

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

        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        .footer-bottom .footer-extra {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-extra span {
            font-size: 13px;
            color: var(--text-muted);
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 数据流风格增强 ===== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .data-block {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }

        .data-block:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(0, 224, 198, 0.2);
        }

        .data-block .num {
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .data-block .label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 767.98px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 392px) {
            .data-strip {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
  --primary: #1D78FF;
  --primary-light: #3AA6FF;
  --accent: #00E0C6;
  --gold: #D4AF6A;
  --bg-dark: #060A14;
  --bg-surface: #081020;
  --text-main: #EAF1FA;
  --text-secondary: #9BAFBF;
  --text-muted: #64788F;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(0, 224, 198, 0.30);
  --shadow-primary: 0 8px 30px rgba(29, 120, 255, 0.35);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
}
::selection {
  background: rgba(29, 120, 255, 0.4);
  color: #fff;
}
.container {
  max-width: 1200px;
  padding: 0 24px;
}

/* ===== 导航栏 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(6, 10, 20, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(6, 10, 20, 0.92);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid rgba(0, 224, 198, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.navbar {
  padding: 12px 0;
  min-height: 72px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-main) !important;
  padding: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 16px;
  box-shadow: var(--shadow-primary);
  flex-shrink: 0;
}
.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 10px;
  border-radius: 10px;
}
.navbar-toggler:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 224, 198, 0.25);
}
.navbar-toggler-icon {
  background-image: none !important;
  position: relative;
  width: 24px;
  height: 18px;
  display: inline-block;
}
.navbar-toggler-icon::before,
.navbar-toggler-icon::after,
.navbar-toggler-icon span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  display: block;
}
.navbar-toggler-icon::before {
  top: 0;
}
.navbar-toggler-icon span {
  top: 8px;
}
.navbar-toggler-icon::after {
  top: 16px;
}
.navbar-nav {
  gap: 4px;
}
.nav-link {
  color: var(--text-secondary) !important;
  font-size: 15px !important;
  font-weight: 500 !important;
  padding: 8px 16px !important;
  border-radius: 8px;
  position: relative;
  transition: var(--transition);
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 50%;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--accent) !important;
}
.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}
.nav-link.active {
  color: var(--text-main) !important;
}
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0, 224, 198, 0.5);
}
.navbar .btn-primary {
  margin-left: 16px;
  font-size: 15px;
  padding: 10px 24px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #00C6B0);
  border: none;
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow-primary);
  transition: var(--transition);
  white-space: nowrap;
}
.navbar .btn-primary:hover {
  box-shadow: 0 0 32px rgba(29, 120, 255, 0.55);
  transform: translateY(-2px);
  filter: brightness(1.1);
}
.navbar .btn-primary:active {
  transform: scale(0.97);
}

/* ===== 面包屑 ===== */
.breadcrumb-wrapper {
  padding: 100px 0 0;
  position: relative;
}
.breadcrumb-wrapper .breadcrumb {
  margin: 0;
  padding: 0;
  background: transparent;
}
.breadcrumb-wrapper .breadcrumb-item {
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb-wrapper .breadcrumb-item a {
  color: var(--text-secondary);
  transition: var(--transition);
}
.breadcrumb-wrapper .breadcrumb-item a:hover {
  color: var(--accent);
}
.breadcrumb-wrapper .breadcrumb-item::before {
  color: var(--text-muted);
}
.breadcrumb-wrapper .breadcrumb-item.active {
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 280px;
  display: inline-block;
  vertical-align: bottom;
}

/* ===== 文章头部 ===== */
.article-header-section {
  position: relative;
  padding: 48px 0 24px;
  background: linear-gradient(180deg, rgba(8, 16, 32, 0.85) 0%, rgba(6, 10, 20, 0.5) 50%, rgba(6, 10, 20, 0) 100%);
}
.article-title {
  font-size: clamp(28px, 4.5vw, 46px);
  font-weight: 800;
  line-height: 1.2;
  margin: 24px 0 20px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 24px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.meta-item i {
  color: var(--primary-light);
  width: 16px;
  font-size: 13px;
}
.meta-item .meta-cat {
  color: var(--accent);
  font-weight: 500;
  background: rgba(0, 224, 198, 0.08);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 13px;
}

/* TDK 信息条 / 本文导读 */
.article-tdk-bar {
  background: linear-gradient(135deg, rgba(29, 120, 255, 0.08), rgba(0, 224, 198, 0.04));
  border: 1px solid rgba(29, 120, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 32px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.tdk-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(29, 120, 255, 0.25), rgba(0, 224, 198, 0.2));
  color: var(--accent);
  font-size: 15px;
  margin-top: 2px;
}
.tdk-content {
  flex: 1;
  min-width: 0;
}
.tdk-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.tdk-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ===== 正文阅读区 ===== */
.article-main-section {
  padding: 24px 0 64px;
  position: relative;
}
.article-content {
  max-width: 800px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.9;
}
.article-content p {
  margin-bottom: 24px;
  line-height: 1.9;
}
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 56px;
  margin-bottom: 20px;
}
.article-content h2 {
  font-size: clamp(22px, 3vw, 30px);
}
.article-content h3 {
  font-size: clamp(18px, 2.2vw, 24px);
  margin-top: 40px;
}
.article-content img {
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  margin: 32px auto;
  box-shadow: var(--shadow-card);
}
.article-content ul,
.article-content ol {
  margin-bottom: 24px;
  padding-left: 22px;
}
.article-content li {
  line-height: 1.9;
  margin-bottom: 10px;
}
.article-content blockquote {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-left: 3px solid var(--primary);
  border-radius: 0 12px 12px 0;
  padding: 20px 24px;
  margin: 32px 0;
  color: var(--text-main);
  font-style: normal;
}
.article-content blockquote p {
  margin: 0;
}
.article-content code {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 3px 8px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
  color: var(--accent);
}
.article-content pre {
  background: #050A12;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 32px 0;
  line-height: 1.6;
}
.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: #c9d7e8;
}
.article-content a {
  color: var(--primary-light);
  border-bottom: 1px solid rgba(58, 166, 255, 0.3);
}
.article-content a:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.article-content table {
  width: 100%;
  margin: 32px 0;
  border-collapse: collapse;
  font-size: 15px;
}
.article-content table th {
  background: rgba(29, 120, 255, 0.12);
  color: var(--text-main);
  font-weight: 600;
  padding: 12px 16px;
  border: 1px solid var(--glass-border);
}
.article-content table td {
  padding: 12px 16px;
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

/* 内容未找到 */
.article-not-found {
  max-width: 800px;
  text-align: center;
  padding: 80px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}
.article-not-found i {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: block;
}
.article-not-found p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.article-not-found .btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #00C6B0);
  color: #fff;
  font-weight: 600;
  border: none;
  box-shadow: var(--shadow-primary);
  transition: var(--transition);
}
.article-not-found .btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(29, 120, 255, 0.5);
}

/* 返回列表 */
.article-back {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: center;
}
.article-back .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.article-back .btn-back:hover {
  border-color: var(--accent);
  background: rgba(0, 224, 198, 0.08);
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 224, 198, 0.15);
}
.article-back .btn-back:active {
  transform: scale(0.97);
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 72px 0;
  background: var(--bg-surface);
  position: relative;
  overflow: hidden;
}
.related-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(29, 120, 255, 0.4), rgba(0, 224, 198, 0.3), transparent);
}
.section-heading {
  text-align: center;
  margin-bottom: 40px;
}
.section-heading h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-heading p {
  color: var(--text-secondary);
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
  position: relative;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 224, 198, 0.3);
  box-shadow: 0 0 24px rgba(0, 224, 198, 0.12), var(--shadow-card);
}
.related-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.04);
}
.related-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 10, 20, 0) 55%, rgba(6, 10, 20, 0.6) 100%);
}
.related-info {
  padding: 20px 20px 24px;
}
.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

/* ===== CTA 区块 ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, #081020 0%, #060A14 50%, #081E2E 100%);
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 24px rgba(0, 224, 198, 0.4);
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}
.cta-inner p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-buttons .btn {
  padding: 14px 36px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
}
.cta-buttons .btn-primary {
  background: linear-gradient(135deg, var(--primary), #00C6B0);
  border: none;
  box-shadow: var(--shadow-primary);
}
.cta-buttons .btn-primary:hover {
  filter: brightness(1.12);
  box-shadow: 0 0 36px rgba(29, 120, 255, 0.55);
  transform: translateY(-3px);
}
.cta-buttons .btn-primary:active {
  transform: scale(0.96);
}
.cta-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.cta-note i {
  color: var(--accent);
  margin-right: 4px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #050A12;
  padding: 64px 0 0;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 224, 198, 0.45), rgba(29, 120, 255, 0.4), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #fff;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 380px;
  margin: 0;
}
.footer-col h4 {
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 2px;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
  position: relative;
  display: inline-block;
}
.footer-col ul li a:hover {
  color: var(--accent);
  transform: translateX(4px);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-extra {
  display: flex;
  gap: 20px;
}
.footer-extra span {
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.footer-extra span:hover {
  color: var(--accent);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .navbar .btn-primary {
    margin-left: 0;
    margin-top: 12px;
    width: 100%;
    text-align: center;
  }
  .navbar-collapse {
    background: rgba(6, 10, 20, 0.98);
    border-radius: 16px;
    padding: 16px 20px;
    margin-top: 12px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .navbar-nav {
    gap: 0;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .breadcrumb-wrapper {
    padding-top: 88px;
  }
  .article-title {
    font-size: 26px;
    margin-top: 16px;
  }
  .article-meta {
    gap: 12px;
    padding: 12px 0;
  }
  .meta-item {
    font-size: 13px;
  }
  .article-tdk-bar {
    padding: 14px 16px;
    flex-direction: column;
    gap: 10px;
  }
  .tdk-icon {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }
  .article-content {
    font-size: 15px;
    line-height: 1.85;
  }
  .article-content p {
    margin-bottom: 20px;
  }
  .article-content h1,
  .article-content h2,
  .article-content h3,
  .article-content h4 {
    margin-top: 40px;
  }
  .related-section {
    padding: 48px 0;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .cta-buttons .btn {
    width: 100%;
    max-width: 320px;
    text-align: center;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-extra {
    gap: 16px;
  }
}
@media (max-width: 575px) {
  .navbar-brand {
    font-size: 16px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
  .breadcrumb-wrapper .breadcrumb-item.active {
    max-width: 200px;
  }
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .article-content blockquote {
    padding: 16px 18px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
@media (min-width: 1440px) {
  .container {
    max-width: 1360px;
  }
}

/* roulang page: category1 */
:root {
            --bg-primary: #060A14;
            --bg-secondary: #081020;
            --bg-deep: #050A12;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --primary: #1D78FF;
            --primary-light: #3AA6FF;
            --accent: #00E0C6;
            --gold: #D4AF6A;
            --text-primary: #EAF1FA;
            --text-secondary: #9BAFBF;
            --text-muted: #64788F;
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(0, 224, 198, 0.30);
            --shadow-blue: 0 8px 30px rgba(29, 120, 255, 0.35);
            --transition: all 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 100px 0;
            position: relative;
        }

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

        .section-title {
            font-size: clamp(24px, 3.6vw, 38px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 10, 20, 0.6);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: var(--transition);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .site-header.scrolled {
            background: rgba(6, 10, 20, 0.85);
            backdrop-filter: blur(20px) saturate(160%);
            -webkit-backdrop-filter: blur(20px) saturate(160%);
            border-bottom: 1px solid rgba(0, 224, 198, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .navbar {
            padding: 0;
            min-height: 72px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            padding: 12px 0;
        }

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

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 20px rgba(29, 120, 255, 0.35);
        }

        .navbar-nav .nav-link {
            color: rgba(234, 241, 250, 0.8);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

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

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

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 50%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
            box-shadow: 0 0 8px rgba(0, 224, 198, 0.5);
        }

        .navbar .btn-primary {
            padding: 9px 22px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-blue);
            transition: var(--transition);
            white-space: nowrap;
        }

        .navbar .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 35px rgba(29, 120, 255, 0.5);
            color: #fff;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .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(234,241,250,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--accent);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-area {
            padding: 110px 0 0;
            background: var(--bg-primary);
        }

        .breadcrumb {
            background: transparent;
            padding: 16px 0 0;
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
            content: "/";
        }

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

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 100px;
            background: linear-gradient(180deg, rgba(6, 10, 20, 0.85), rgba(6, 10, 20, 0.92)),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

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

        .page-hero h1 {
            font-size: clamp(32px, 5vw, 50px);
            font-weight: 800;
            line-height: 1.2;
            margin: 24px 0 20px;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .page-hero h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        .hero-cta .btn-download {
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-blue);
            transition: var(--transition);
        }

        .hero-cta .btn-download:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(29, 120, 255, 0.5);
        }

        .hero-cta .btn-secondary {
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 12px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-primary);
            transition: var(--transition);
        }

        .hero-cta .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent);
            color: var(--accent);
        }

        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .phone-frame {
            width: 260px;
            height: 520px;
            border-radius: 36px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 14px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(29, 120, 255, 0.15);
            position: relative;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .phone-frame::before {
            content: "";
            position: absolute;
            top: 12px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 99px;
            z-index: 2;
        }

        .phone-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 99px;
            background: rgba(0, 224, 198, 0.08);
            border: 1px solid rgba(0, 224, 198, 0.3);
            color: var(--accent);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 20px;
        }

        /* ===== 下载渠道 ===== */
        .channel-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .channel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .channel-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            backdrop-filter: blur(16px) saturate(160%);
            -webkit-backdrop-filter: blur(16px) saturate(160%);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }

        .channel-card::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(29, 120, 255, 0.1), rgba(0, 224, 198, 0.05));
            opacity: 0;
            transition: var(--transition);
        }

        .channel-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            background: var(--bg-card-hover);
        }

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

        .channel-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(29, 120, 255, 0.2), rgba(0, 224, 198, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary-light);
            margin: 0 auto 20px;
            border: 1px solid rgba(29, 120, 255, 0.25);
            transition: var(--transition);
        }

        .channel-card:hover .channel-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 0 20px rgba(29, 120, 255, 0.4);
        }

        .channel-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .channel-card .channel-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .channel-card .channel-size {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .channel-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 20px rgba(29, 120, 255, 0.3);
            transition: var(--transition);
        }

        .channel-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(29, 120, 255, 0.45);
            color: #fff;
        }

        .channel-btn:active {
            transform: scale(0.97);
        }

        .channel-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .channel-btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255, 255, 255, 0.05);
        }

        /* ===== 系统要求 ===== */
        .requirements-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

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

        .requirement-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .requirement-card.recommended {
            border-color: rgba(0, 224, 198, 0.4);
            box-shadow: 0 0 30px rgba(0, 224, 198, 0.08), var(--shadow-card);
        }

        .requirement-card:hover {
            transform: translateY(-2px);
        }

        .req-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .req-tag-minimum {
            background: rgba(29, 120, 255, 0.15);
            border: 1px solid rgba(29, 120, 255, 0.3);
            color: var(--primary-light);
        }

        .req-tag-recommended {
            background: rgba(0, 224, 198, 0.12);
            border: 1px solid rgba(0, 224, 198, 0.3);
            color: var(--accent);
        }

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

        .req-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .req-item:last-child {
            border-bottom: none;
        }

        .req-label {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .req-label i {
            width: 18px;
            text-align: center;
            color: var(--primary-light);
            font-size: 13px;
        }

        .req-value {
            font-size: 15px;
            color: var(--text-primary);
            text-align: right;
            font-weight: 500;
        }

        .req-note {
            margin-top: 24px;
            padding: 14px 18px;
            border-radius: 10px;
            background: rgba(0, 224, 198, 0.05);
            border: 1px solid rgba(0, 224, 198, 0.15);
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 下载流程 ===== */
        .steps-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }

        .steps-grid::before {
            content: "";
            position: absolute;
            top: 40px;
            left: 16%;
            right: 16%;
            height: 2px;
            background: linear-gradient(90deg, rgba(29, 120, 255, 0.1), rgba(0, 224, 198, 0.3), rgba(29, 120, 255, 0.1));
            z-index: 0;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }

        .step-num {
            width: 80px;
            height: 80px;
            border-radius: 24px;
            background: linear-gradient(135deg, rgba(29, 120, 255, 0.2), rgba(0, 224, 198, 0.15));
            border: 1px solid rgba(29, 120, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            margin: 0 auto 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            transition: var(--transition);
        }

        .step-item:hover .step-num {
            transform: translateY(-4px);
            box-shadow: 0 0 30px rgba(0, 224, 198, 0.2), 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .step-item h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 260px;
            margin: 0 auto;
        }

        /* ===== 官方保障 ===== */
        .assurance-section {
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .assurance-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: var(--transition);
            text-align: left;
            position: relative;
            overflow: hidden;
        }

        .assurance-card::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.1), transparent 70%);
            opacity: 0;
            transition: var(--transition);
        }

        .assurance-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow-card);
        }

        .assurance-card:hover::after {
            opacity: 1;
        }

        .assurance-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            background: rgba(29, 120, 255, 0.15);
            border: 1px solid rgba(29, 120, 255, 0.25);
            color: var(--primary-light);
        }

        .assurance-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .assurance-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 100px 0;
            background: var(--bg-primary);
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 224, 198, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-light);
            min-width: 24px;
        }

        .faq-icon {
            margin-left: auto;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 24px 20px 64px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            display: none;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-deep) 100%);
            position: relative;
            border-top: 1px solid rgba(0, 224, 198, 0.15);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

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

        .cta-title {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

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

        .cta-buttons .btn-primary {
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #fff;
            box-shadow: var(--shadow-blue);
            transition: var(--transition);
        }

        .cta-buttons .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(29, 120, 255, 0.5);
        }

        .cta-buttons .btn-outline {
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 12px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-primary);
            transition: var(--transition);
        }

        .cta-buttons .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-safe {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .cta-safe i {
            color: var(--accent);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(0, 224, 198, 0.15);
            padding-top: 70px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 50px;
        }

        .footer-brand .logo-text {
            font-size: 24px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .footer-extra {
            display: flex;
            gap: 20px;
        }

        .footer-extra span {
            font-size: 14px;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .channel-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .step-item {
                padding: 0 8px;
            }

            .hero-visual {
                margin-top: 40px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 64px 0;
            }

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

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .steps-grid::before {
                display: none;
            }

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

            .page-hero {
                padding: 60px 0 80px;
            }

            .hero-cta {
                flex-direction: column;
                width: 100%;
            }

            .hero-cta .btn-download,
            .hero-cta .btn-secondary {
                width: 100%;
                text-align: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .footer-extra {
                justify-content: center;
            }

            .phone-frame {
                width: 220px;
                height: 440px;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
                align-items: center;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline {
                width: 100%;
                max-width: 320px;
                text-align: center;
            }
        }

        @media (max-width: 575.98px) {
            .navbar-brand span {
                font-size: 17px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .section-title {
                font-size: 24px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-breadcrumb {
                padding-top: 100px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 6px 12px;
            }

            .phone-frame {
                width: 200px;
                height: 400px;
            }

            .requirement-card {
                padding: 24px;
            }

            .faq-answer {
                padding-left: 24px;
            }
        }

        @media (min-width: 1440px) {
            .container {
                max-width: 1360px;
            }
        }