/* roulang page: index */
:root {
            --bg-primary: #0B1632;
            --bg-secondary: #10233F;
            --bg-deep: #0B1A2E;
            --accent: #2FBF71;
            --accent-light: #38E8C6;
            --text-primary: #F0F4FA;
            --text-secondary: rgba(255, 255, 255, 0.55);
            --text-muted: rgba(255, 255, 255, 0.38);
            --border-glass: rgba(255, 255, 255, 0.12);
            --border-accent: rgba(47, 191, 113, 0.45);
            --radius-sm: 0.5rem;
            --radius-md: 0.85rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.25);
            --shadow-accent: 0 12px 32px rgba(47, 191, 113, 0.25);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container-x {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* 背景纹理 */
        .texture-dots {
            background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 22px 22px;
        }
        .texture-grid {
            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: 48px 48px;
        }

        /* 玻璃面板 */
        .glass {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .glass::before {
            content: "";
            position: absolute;
            top: 0;
            left: 8%;
            width: 30%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
            pointer-events: none;
        }

        /* 复古双线框 */
        .frame-vintage {
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-md);
            box-shadow: 0 0 0 1px rgba(47, 191, 113, 0.08), 0 18px 40px rgba(0, 0, 0, 0.22);
        }
        .frame-vintage::after {
            content: "";
            position: absolute;
            inset: 5px;
            border: 1px solid rgba(47, 191, 113, 0.14);
            border-radius: calc(var(--radius-md) - 4px);
            pointer-events: none;
        }

        /* 徽章印章 */
        .badge-stamp {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.2rem 0.75rem;
            border-radius: 999px;
            border: 1px solid rgba(47, 191, 113, 0.35);
            background: rgba(47, 191, 113, 0.08);
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.75);
            white-space: nowrap;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border-radius: 999px;
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            color: #06210F;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 12px 32px rgba(47, 191, 113, 0.25);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 14px 40px rgba(47, 191, 113, 0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(56, 232, 198, 0.4);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-outline:active {
            transform: scale(0.96);
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: background 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
            padding: 0.5rem 0;
        }
        .site-header.scrolled {
            background: rgba(11, 22, 50, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-link {
            position: relative;
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.65);
            padding: 0.4rem 0.2rem;
            transition: color 0.25s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
        }

        /* hero */
        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            background: linear-gradient(105deg, rgba(11, 22, 50, 0.92) 0%, rgba(11, 22, 50, 0.72) 45%, rgba(11, 22, 50, 0.35) 70%, rgba(11, 22, 50, 0.15) 100%);
        }

        /* 卡片 */
        .content-card {
            background: rgba(255, 255, 255, 0.055);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }
        .content-card:hover {
            transform: translateY(-4px);
            border-color: rgba(47, 191, 113, 0.4);
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.6rem;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            position: relative;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            border-color: rgba(47, 191, 113, 0.3);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
        }
        .feature-card .icon-wrap {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 191, 113, 0.1);
            border: 1px solid rgba(47, 191, 113, 0.25);
            color: var(--accent);
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }

        /* 列表卡片 */
        .list-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding: 1.2rem 1.4rem;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.09);
            background: rgba(255, 255, 255, 0.04);
            transition: border-color 0.3s, background 0.3s, transform 0.2s;
        }
        .list-card:hover {
            border-color: rgba(47, 191, 113, 0.5);
            background: rgba(47, 191, 113, 0.06);
        }
        .list-card .arrow {
            transition: transform 0.3s;
            color: rgba(255, 255, 255, 0.45);
            flex-shrink: 0;
        }
        .list-card:hover .arrow {
            transform: translateX(5px);
            color: var(--accent);
        }

        /* 步骤时间线 */
        .step-item {
            position: relative;
            padding-left: 2.8rem;
            padding-bottom: 2.2rem;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-item::before {
            content: "";
            position: absolute;
            left: 0.85rem;
            top: 2rem;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(47, 191, 113, 0.5), rgba(47, 191, 113, 0.05));
            border-radius: 2px;
        }
        .step-item:last-child::before {
            display: none;
        }
        .step-dot {
            position: absolute;
            left: 0;
            top: 0.3rem;
            width: 1.75rem;
            height: 1.75rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: #06210F;
            box-shadow: 0 0 0 4px rgba(47, 191, 113, 0.12);
        }

        /* 评价卡 */
        .quote-card {
            position: relative;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-lg);
            padding: 2rem 1.6rem 1.4rem;
            transition: transform 0.3s, border-color 0.3s;
        }
        .quote-card:hover {
            transform: translateY(-3px);
            border-color: rgba(47, 191, 113, 0.25);
        }
        .quote-card::before {
            content: "\201C";
            position: absolute;
            top: 0.1rem;
            left: 1.2rem;
            font-size: 3.5rem;
            color: rgba(47, 191, 113, 0.3);
            font-family: Georgia, serif;
            line-height: 1;
        }

        /* 价格卡 */
        .price-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-lg);
            padding: 2.2rem 1.8rem;
            text-align: center;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
        }
        .price-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 42px rgba(0, 0, 0, 0.28);
        }
        .price-card.highlight {
            border-color: rgba(47, 191, 113, 0.45);
            box-shadow: 0 18px 48px rgba(47, 191, 113, 0.12);
            background: linear-gradient(145deg, rgba(47, 191, 113, 0.1), rgba(255, 255, 255, 0.04));
        }

        /* FAQ */
        .faq-item {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(47, 191, 113, 0.25);
        }
        .faq-item.open {
            border-color: rgba(47, 191, 113, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.3rem;
            cursor: pointer;
            user-select: none;
            font-weight: 600;
        }
        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.6);
            transition: transform 0.3s, border-color 0.3s, color 0.3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 1.3rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.1rem;
        }

        /* 表单 */
        .form-input {
            width: 100%;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 0.85rem;
            padding: 0.8rem 1rem;
            color: var(--text-primary);
            font-size: 0.92rem;
            outline: none;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .form-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.15);
        }

        .form-label {
            display: block;
            margin-bottom: 0.4rem;
            font-size: 0.86rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.72);
        }

        /* 页脚 */
        .footer-link {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            transition: color 0.25s;
            display: inline-block;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        /* 浮动CTA */
        .float-cta {
            position: fixed;
            right: 1.2rem;
            bottom: 1.2rem;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 30px rgba(47, 191, 113, 0.4);
            cursor: pointer;
            transition: all 0.35s ease;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            color: #06210F;
            font-weight: 700;
            font-size: 0.8rem;
            border: none;
            overflow: hidden;
        }
        .float-cta.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .float-cta:hover {
            width: 150px;
            border-radius: 999px;
            gap: 0.4rem;
            justify-content: center;
        }
        .float-cta .short {
            display: block;
        }
        .float-cta .full {
            display: none;
        }
        .float-cta:hover .short {
            display: none;
        }
        .float-cta:hover .full {
            display: inline;
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(11, 22, 50, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.2rem;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 1.3rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
            padding: 0.4rem 1rem;
        }

        /* 板块标题装饰 */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 2.25rem;
            }
        }
        .title-stroke {
            display: inline-block;
            position: relative;
        }
        .title-stroke::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0.55;
        }

        /* 分区装饰球 */
        .ball-track {
            position: absolute;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            border: 2px dashed rgba(47, 191, 113, 0.25);
            animation: rotate 20s linear infinite;
        }
        .ball-track::after {
            content: "";
            position: absolute;
            top: -6px;
            left: 50%;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            box-shadow: 0 0 12px rgba(56, 232, 198, 0.5);
        }
        @keyframes rotate {
            to {
                transform: rotate(360deg);
            }
        }

        /* 内容渐显 */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.85rem !important;
                line-height: 1.4 !important;
            }
            .section-title {
                font-size: 1.55rem !important;
            }
            .float-cta:hover {
                width: 56px;
                border-radius: 50%;
            }
            .float-cta:hover .short {
                display: block;
            }
            .float-cta:hover .full {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .hero-bg {
                background-position: 65% center;
            }
            .content-card,
            .feature-card {
                padding: 1.3rem;
            }
            .list-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0B1632;
            --bg-panel: #10233F;
            --bg-elev: #14294A;
            --accent: #2FBF71;
            --aqua: #38E8C6;
            --text-hi: rgba(255, 255, 255, 0.92);
            --text-mid: rgba(255, 255, 255, 0.65);
            --text-low: rgba(255, 255, 255, 0.42);
            --border-glass: rgba(255, 255, 255, 0.12);
            --border-hover: rgba(47, 191, 113, 0.5);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --radius-lg: 1.5rem;
            --radius-md: 1rem;
            --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.25);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-hi);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container-x {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: transparent;
            transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
            border-bottom: 1px solid transparent;
        }
        .site-nav.scrolled {
            background: rgba(11, 22, 50, .85);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-color: rgba(255, 255, 255, .06);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
        }
        .nav-link {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-mid);
            padding: .35rem .15rem;
            transition: color .25s;
            letter-spacing: .02em;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--aqua), var(--accent));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s;
        }
        .nav-link:hover {
            color: var(--text-hi);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--text-hi);
            font-weight: 600;
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            color: #06210F;
            font-weight: 700;
            font-size: .95rem;
            padding: .65rem 1.6rem;
            border-radius: 999px;
            border: none;
            box-shadow: 0 8px 25px rgba(47, 191, 113, .25);
            transition: all .3s ease;
            line-height: 1.4;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 10px 35px rgba(47, 191, 113, .4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.96);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(56, 232, 198, .45);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: transparent;
            color: var(--text-hi);
            font-weight: 600;
            font-size: .95rem;
            padding: .65rem 1.6rem;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .35);
            transition: all .3s ease;
            line-height: 1.4;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .6);
        }
        .btn-outline:active {
            transform: scale(.96);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 232, 198, .35);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 22, 50, .95) 0%, rgba(11, 22, 50, .78) 55%, rgba(11, 22, 50, .35) 100%);
        }
        .hero-category::after {
            content: '';
            position: absolute;
            right: -5rem;
            bottom: -7rem;
            width: 30rem;
            height: 30rem;
            border-radius: 50%;
            border: 2px solid rgba(56, 232, 198, .25);
            box-shadow: 0 0 80px rgba(56, 232, 198, .08);
            background: radial-gradient(circle, rgba(56, 232, 198, .06) 0%, transparent 65%);
            pointer-events: none;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            right: 2rem;
            bottom: 0;
            width: 55%;
            height: 4px;
            background: linear-gradient(90deg, transparent, rgba(47, 191, 113, .5), transparent);
            border-radius: 999px;
            pointer-events: none;
        }

        /* ===== 玻璃卡片通用 ===== */
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .25), transparent);
            border-radius: 999px;
        }

        /* ===== 数据条 ===== */
        .trust-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }
        .trust-item {
            text-align: center;
            padding: 1.1rem .5rem;
        }
        .trust-item span {
            display: block;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
        }
        .trust-item small {
            font-size: .8rem;
            color: var(--text-low);
        }

        /* ===== 标题 ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .8rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: .08em;
            text-transform: uppercase;
            padding: .3rem .8rem;
            background: rgba(47, 191, 113, .1);
            border: 1px solid rgba(47, 191, 113, .25);
            border-radius: 999px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-top: .75rem;
            color: #fff;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 2.4rem;
            }
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-mid);
            max-width: 36rem;
            margin-top: .8rem;
            line-height: 1.8;
        }

        /* ===== 方法卡片 ===== */
        .method-card {
            position: relative;
            border-radius: 1.25rem;
            border: 1px solid rgba(255, 255, 255, .1);
            background: linear-gradient(145deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .02));
            transition: all .3s ease;
            overflow: hidden;
        }
        .method-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
            transform: translateY(-4px);
        }
        .method-tag {
            display: inline-block;
            font-size: .72rem;
            font-weight: 600;
            color: var(--aqua);
            background: rgba(56, 232, 198, .1);
            border: 1px solid rgba(56, 232, 198, .25);
            padding: .15rem .7rem;
            border-radius: 999px;
            letter-spacing: .04em;
        }
        .method-num {
            font-size: .85rem;
            font-weight: 700;
            color: var(--text-low);
            letter-spacing: .1em;
        }

        /* ===== 时间线 ===== */
        .steps-timeline {
            position: relative;
            padding-left: 1rem;
        }
        .steps-timeline::before {
            content: '';
            position: absolute;
            left: 1.35rem;
            top: .5rem;
            bottom: .5rem;
            width: 2px;
            background: linear-gradient(180deg, var(--aqua), var(--accent), rgba(47, 191, 113, .15));
            border-radius: 999px;
        }
        .step-item {
            position: relative;
            padding-left: 4.5rem;
            padding-bottom: 2.4rem;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-circle {
            position: absolute;
            left: 0;
            top: .1rem;
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            color: #06210F;
            font-weight: 800;
            font-size: .95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 0 5px rgba(47, 191, 113, .15), 0 8px 20px rgba(56, 232, 198, .2);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item.open {
            border-color: rgba(47, 191, 113, .4);
            box-shadow: 0 15px 35px rgba(0, 0, 0, .2);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.3rem;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-hi);
            transition: color .2s;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 1.75rem;
            height: 1.75rem;
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .15);
            color: var(--accent);
            transition: transform .3s, background .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(47, 191, 113, .15);
            border-color: rgba(47, 191, 113, .35);
        }
        .faq-answer-wrap {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer {
            padding: 0 1.3rem 1.2rem;
            color: var(--text-mid);
            font-size: .92rem;
            line-height: 1.85;
        }

        /* ===== 页脚 ===== */
        .footer-link {
            color: rgba(255, 255, 255, .45);
            font-size: .87rem;
            transition: color .25s;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        /* ===== 浮动CTA ===== */
        .floating-cta {
            position: fixed;
            right: 1.25rem;
            bottom: 1.25rem;
            z-index: 90;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            color: #06210F;
            font-weight: 700;
            font-size: .85rem;
            box-shadow: 0 10px 30px rgba(47, 191, 113, .35);
            border: none;
            transition: width .35s ease, border-radius .35s ease, box-shadow .35s ease, opacity .4s ease, transform .3s ease;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            overflow: hidden;
            white-space: nowrap;
        }
        .floating-cta.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .floating-cta:hover {
            width: 9.5rem;
            border-radius: 999px;
            justify-content: center;
            gap: .4rem;
            box-shadow: 0 14px 40px rgba(47, 191, 113, .5);
        }
        .floating-cta .cta-text {
            opacity: 0;
            max-width: 0;
            transition: opacity .3s, max-width .35s;
        }
        .floating-cta:hover .cta-text {
            opacity: 1;
            max-width: 6rem;
        }
        @media (max-width: 640px) {
            .floating-cta {
                width: 3rem;
                height: 3rem;
                right: .9rem;
                bottom: .9rem;
            }
        }

        /* ===== 移动端菜单 ===== */
        .hamburger-btn {
            width: 2.6rem;
            height: 2.6rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: .7rem;
            transition: background .25s;
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, .12);
        }
        .hamburger-line {
            width: 1.2rem;
            height: 2px;
            background: #fff;
            border-radius: 999px;
            transition: transform .3s, opacity .3s;
        }
        .hamburger-btn.open .hamburger-line:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger-btn.open .hamburger-line:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.open .hamburger-line:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 95;
            background: rgba(8, 18, 34, .97);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            display: flex;
            flex-direction: column;
            padding: 6rem 2rem 2rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity .35s, visibility .35s;
        }
        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer a {
            font-size: 1.2rem;
            font-weight: 600;
            padding: .9rem 0;
            color: var(--text-mid);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: color .2s;
        }
        .mobile-drawer a:hover {
            color: var(--accent);
        }
        .mobile-drawer a.active-mobile {
            color: var(--accent);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            color: var(--text-low);
            letter-spacing: .02em;
        }
        .breadcrumb a {
            color: var(--text-low);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, .25);
        }

        /* ===== 弧线装饰 ===== */
        .arc-deco {
            position: absolute;
            border-radius: 50%;
            border: 1.5px solid rgba(56, 232, 198, .15);
            pointer-events: none;
        }

        /* ===== 表单 ===== */
        .input-dark {
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: .8rem;
            padding: .75rem 1rem;
            font-size: .92rem;
            color: #fff;
            width: 100%;
            transition: border-color .25s, box-shadow .25s;
        }
        .input-dark::placeholder {
            color: rgba(255, 255, 255, .35);
        }
        .input-dark:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(47, 191, 113, .15);
        }

        /* ===== section间距 ===== */
        .section-block {
            padding: 4.5rem 0;
        }
        @media (min-width: 1024px) {
            .section-block {
                padding: 6rem 0;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #0B1632;
            --bg-panel: #10233F;
            --bg-dark: #081222;
            --accent: #2FBF71;
            --aqua: #38E8C6;
            --text-title: rgba(255, 255, 255, 0.95);
            --text-body: rgba(255, 255, 255, 0.82);
            --text-sub: rgba(255, 255, 255, 0.6);
            --text-muted: rgba(255, 255, 255, 0.4);
            --border: rgba(255, 255, 255, 0.12);
            --glass: rgba(255, 255, 255, 0.06);
            --radius-xl: 1.75rem;
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.35);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            --ease: cubic-bezier(0.22, 1, 0.36, 1);
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
        body{font-family:var(--font-sans);background:var(--bg-deep);color:var(--text-body);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
        img{max-width:100%;display:block}
        a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
        button{font-family:inherit;border:none;background:none;cursor:pointer}
        input,textarea,select{font-family:inherit}
        .container-x{width:100%;max-width:80rem;margin:0 auto;padding:0 1rem}
        @media(min-width:640px){.container-x{padding:0 1.5rem}}
        @media(min-width:1024px){.container-x{padding:0 2rem}}

        .btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:linear-gradient(135deg,var(--aqua),var(--accent));color:#06210F;font-weight:700;padding:.875rem 1.75rem;border-radius:9999px;box-shadow:0 12px 30px rgba(47,191,113,.25);transition:all .3s var(--ease);font-size:.95rem;line-height:1.2}
        .btn-primary:hover{filter:brightness(1.1);box-shadow:0 16px 40px rgba(47,191,113,.35);transform:translateY(-2px)}
        .btn-primary:active{transform:scale(.96)}
        .btn-primary:focus-visible{outline:3px solid rgba(56,232,198,.4);outline-offset:2px}
        .btn-primary.btn-sm{padding:.625rem 1.25rem;font-size:.875rem}

        .btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:transparent;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.25);padding:.875rem 1.75rem;border-radius:9999px;font-weight:600;transition:all .3s var(--ease);font-size:.95rem}
        .btn-outline:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);transform:translateY(-2px)}
        .btn-outline:active{transform:scale(.96)}
        .btn-outline:focus-visible{outline:3px solid rgba(255,255,255,.2);outline-offset:2px}

        .site-header{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;transition:background .35s var(--ease),padding .35s var(--ease),border-color .35s var(--ease);border-bottom:1px solid transparent}
        .site-header.scrolled{background:rgba(11,22,50,.85);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom-color:rgba(255,255,255,.08);padding:.375rem 0}
        .header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:3.75rem}
        .site-logo{display:flex;align-items:center;gap:.625rem;font-weight:800;font-size:1.15rem;color:var(--text-title);white-space:nowrap}
        .logo-badge{width:2.5rem;height:2.5rem;border-radius:.875rem;background:linear-gradient(135deg,var(--accent),var(--aqua));display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:800;color:#06210F;box-shadow:0 8px 20px rgba(47,191,113,.25);transition:all .35s var(--ease)}
        .site-logo:hover .logo-badge{box-shadow:0 10px 30px rgba(47,191,113,.45);transform:rotate(-6deg)}
        .nav-link{position:relative;font-size:.9rem;font-weight:500;color:rgba(255,255,255,.7);padding:.5rem 0;white-space:nowrap}
        .nav-link:hover{color:rgba(255,255,255,.95)}
        .nav-link.active{color:var(--accent);font-weight:600}
        .nav-link.active::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--accent),var(--aqua));border-radius:2px}
        .menu-toggle{width:2.75rem;height:2.75rem;display:flex;align-items:center;justify-content:center;border-radius:.75rem;border:1px solid var(--border);color:#fff;font-size:1.125rem;transition:all .3s}
        .menu-toggle:hover{background:var(--glass);border-color:rgba(255,255,255,.25)}

        .mobile-menu{position:fixed;top:0;right:0;bottom:0;width:min(85vw,320px);background:rgba(8,18,34,.98);backdrop-filter:blur(24px);border-left:1px solid var(--border);transform:translateX(100%);transition:transform .4s var(--ease);z-index:200;padding:1.5rem;display:flex;flex-direction:column;overflow-y:auto}
        .mobile-menu.open{transform:translateX(0)}
        .mobile-menu-close{align-self:flex-end;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;border-radius:.75rem;border:1px solid var(--border);color:#fff;font-size:1rem;margin-bottom:2rem}
        .mobile-nav-link{display:block;padding:.875rem .5rem;font-size:1rem;font-weight:500;color:rgba(255,255,255,.85);border-bottom:1px solid rgba(255,255,255,.06);transition:all .25s}
        .mobile-nav-link:hover{color:var(--accent);padding-left:.75rem}
        .mobile-nav-link.active{color:var(--accent);font-weight:600}
        .mobile-menu-cta{margin-top:2rem}
        .menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity .3s;z-index:190}
        .menu-overlay.open{opacity:1;pointer-events:auto}

        .page-hero{position:relative;padding:9.5rem 0 3.5rem;background-size:cover;background-position:center;border-bottom:1px solid var(--border);overflow:hidden}
        .page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(to right,rgba(11,22,50,.96) 0%,rgba(11,22,50,.8) 55%,rgba(11,22,50,.55) 100%)}
        .page-hero::after{content:'';position:absolute;right:-80px;bottom:-80px;width:260px;height:260px;border-radius:50%;border:2px solid rgba(56,232,198,.18);box-shadow:0 0 80px rgba(56,232,198,.06),inset 0 0 80px rgba(56,232,198,.03)}
        .page-hero-content{position:relative;z-index:2;max-width:900px}
        .breadcrumb{display:flex;align-items:center;gap:.625rem;flex-wrap:wrap;font-size:.85rem;color:var(--text-muted);margin-bottom:1.5rem}
        .breadcrumb a{color:rgba(255,255,255,.6)}
        .breadcrumb a:hover{color:var(--accent)}
        .breadcrumb .sep{color:rgba(255,255,255,.25);font-size:.7rem}
        .breadcrumb .current{color:rgba(255,255,255,.85);font-weight:500;max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
        .page-hero h1{font-size:1.75rem;line-height:1.4;font-weight:800;color:var(--text-title);margin-bottom:1.25rem;letter-spacing:.01em}
        @media(min-width:640px){.page-hero h1{font-size:2.25rem}}
        @media(min-width:1024px){.page-hero h1{font-size:2.75rem}}
        .article-meta{display:flex;flex-wrap:wrap;gap:1.25rem;color:var(--text-sub);font-size:.875rem}
        .meta-item{display:inline-flex;align-items:center;gap:.375rem}
        .meta-item i{color:var(--accent);font-size:.8rem}

        .article-body-section{padding:3.5rem 0 0}
        .article-body-wrap{max-width:760px;margin:0 auto}
        .article-content{font-size:1rem;line-height:1.9;color:rgba(255,255,255,.85)}
        .article-content h2{font-size:1.375rem;font-weight:700;color:var(--text-title);margin:2rem 0 .875rem;line-height:1.5;padding-top:.5rem}
        .article-content h3{font-size:1.125rem;font-weight:700;color:var(--text-title);margin:1.75rem 0 .625rem}
        .article-content p{margin-bottom:1.25rem}
        .article-content ul,.article-content ol{margin:1rem 0 1.25rem;padding-left:1.5rem}
        .article-content ul{list-style:disc}
        .article-content ol{list-style:decimal}
        .article-content li{margin-bottom:.5rem}
        .article-content blockquote{border-left:3px solid var(--accent);background:rgba(255,255,255,.04);padding:.875rem 1.25rem;margin:1.5rem 0;border-radius:0 var(--radius-md) var(--radius-md) 0;color:rgba(255,255,255,.7)}
        .article-content img{border-radius:var(--radius-lg);margin:1.75rem 0;box-shadow:var(--shadow-md)}
        .article-content a{color:var(--aqua);text-decoration:underline;text-underline-offset:3px}
        .article-content a:hover{color:var(--accent)}
        .article-content table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem}
        .article-content th,.article-content td{border:1px solid var(--border);padding:.625rem .875rem;text-align:left}
        .article-content th{background:rgba(255,255,255,.05);font-weight:600;color:var(--text-title)}
        .article-content code{background:rgba(255,255,255,.08);border-radius:.375rem;padding:.175rem .4rem;font-size:.875em;font-family:monospace}
        .article-content iframe{width:100%;border-radius:var(--radius-lg);margin:1.5rem 0}

        .not-found-box{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center}
        .not-found-box .nf-icon{font-size:3rem;color:rgba(255,255,255,.15);margin-bottom:1rem}
        .not-found-box p{font-size:1.125rem;color:var(--text-body);margin-bottom:1.5rem}

        .post-nav{display:grid;grid-template-columns:1fr;gap:1rem;margin:3rem 0}
        @media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
        .post-nav-item{display:block;padding:1.25rem 1.5rem;background:var(--glass);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s var(--ease)}
        .post-nav-item:hover{border-color:rgba(47,191,113,.4);background:rgba(255,255,255,.08);transform:translateY(-2px)}
        .post-nav-item .label{font-size:.75rem;color:var(--text-muted);letter-spacing:.08em;margin-bottom:.5rem;display:block}
        .post-nav-item .title{font-size:.9375rem;font-weight:600;color:rgba(255,255,255,.85);line-height:1.5}
        .post-nav-item .title i{margin-right:.375rem;color:var(--accent)}

        .related-section{padding:4rem 0 3rem}
        .article-card{display:flex;flex-direction:column;overflow:hidden;background:var(--glass);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .35s var(--ease)}
        .article-card:hover{transform:translateY(-6px);border-color:rgba(47,191,113,.35);box-shadow:var(--shadow-lg);background:rgba(255,255,255,.08)}
        .article-card-img{position:relative;aspect-ratio:16/10;overflow:hidden}
        .article-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
        .article-card:hover .article-card-img img{transform:scale(1.05)}
        .article-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(11,22,50,.45))}
        .article-card-tag{position:absolute;top:.875rem;left:.875rem;z-index:2;background:rgba(11,22,50,.75);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);color:rgba(255,255,255,.85);font-size:.7rem;font-weight:600;padding:.25rem .625rem;border-radius:.5rem}
        .article-card-body{padding:1.25rem 1.25rem 1.5rem}
        .article-card-body h3{font-size:1.0625rem;font-weight:700;color:var(--text-title);margin-bottom:.5rem;line-height:1.5}
        .article-card-body p{font-size:.875rem;color:var(--text-sub);line-height:1.7;margin-bottom:.75rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .article-card-body .read-more{font-size:.85rem;font-weight:600;color:var(--aqua);display:inline-flex;align-items:center;gap:.375rem}
        .article-card-body .read-more i{transition:transform .3s}
        .article-card-body .read-more:hover i{transform:translateX(4px)}

        .faq-section{padding:3rem 0}
        .faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:.875rem}
        .faq-item{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s;overflow:hidden}
        .faq-item:hover{border-color:rgba(255,255,255,.2)}
        .faq-item.open{border-color:rgba(47,191,113,.35);background:rgba(255,255,255,.08)}
        .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.25rem 1.5rem;text-align:left;color:rgba(255,255,255,.9);font-weight:600;font-size:.9375rem}
        .faq-question .icon{flex-shrink:0;width:1.75rem;height:1.75rem;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.85rem;transition:all .35s;color:var(--text-sub)}
        .faq-item.open .faq-question .icon{transform:rotate(45deg);border-color:var(--accent);color:var(--accent)}
        .faq-answer{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
        .faq-answer-inner{padding:0 1.5rem 1.25rem;color:var(--text-sub);font-size:.9rem;line-height:1.75}

        .cta-section{padding:4rem 0}
        .cta-box{position:relative;background:linear-gradient(145deg,rgba(16,35,63,.95),rgba(11,22,50,.95));border:1px solid rgba(56,232,198,.18);border-radius:var(--radius-xl);padding:2.5rem 1.5rem;box-shadow:var(--shadow-lg);overflow:hidden}
        @media(min-width:640px){.cta-box{padding:3.5rem 3rem}}
        .cta-box::before{content:'';position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(56,232,198,.3),transparent 30%,transparent 70%,rgba(47,191,113,.3));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
        .cta-box::after{content:'';position:absolute;top:-80px;right:-80px;width:180px;height:180px;border-radius:50%;border:2px dotted rgba(56,232,198,.22);animation:spin-slow 30s linear infinite}
        .cta-box h2{font-size:1.5rem;font-weight:800;color:var(--text-title);margin-bottom:.75rem;text-align:center}
        .cta-box .sub{text-align:center;color:var(--text-sub);margin-bottom:2rem;font-size:.95rem;max-width:560px;margin-left:auto;margin-right:auto}
        .contact-form{max-width:560px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:1rem}
        @media(min-width:640px){.contact-form{grid-template-columns:1fr 1fr}}
        .contact-form .field-full{grid-column:1/-1}
        .form-group{display:flex;flex-direction:column;gap:.375rem}
        .form-group label{font-size:.8125rem;font-weight:600;color:rgba(255,255,255,.7)}
        .form-group input,.form-group textarea{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-md);padding:.75rem 1rem;font-size:.9rem;color:rgba(255,255,255,.9);transition:all .3s;outline:none;width:100%}
        .form-group input:focus,.form-group textarea:focus{border-color:var(--accent);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(47,191,113,.15)}
        .form-group input::placeholder,.form-group textarea::placeholder{color:rgba(255,255,255,.3)}
        .form-group textarea{resize:vertical;min-height:110px}
        .form-submit{grid-column:1/-1}
        .form-tip{font-size:.75rem;color:var(--text-muted);text-align:center;margin-top:.75rem}

        .site-footer{border-top:1px solid rgba(255,255,255,.05);background:#081222;padding-top:4rem;padding-bottom:2rem}
        .footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;padding-bottom:3rem}
        @media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
        @media(min-width:1024px){.footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:3rem}}
        .footer-logo{display:flex;align-items:center;gap:.625rem;margin-bottom:1rem;font-weight:800;font-size:1.1rem;color:var(--text-title)}
        .footer-logo .logo-badge{width:2.25rem;height:2.25rem;border-radius:.75rem}
        .footer-desc{color:rgba(255,255,255,.4);font-size:.875rem;line-height:1.7}
        .footer-heading{font-weight:700;font-size:.9375rem;color:rgba(255,255,255,.8);margin-bottom:1rem}
        .footer-list{list-style:none;display:flex;flex-direction:column;gap:.625rem}
        .footer-link{font-size:.875rem;color:rgba(255,255,255,.45);transition:all .25s}
        .footer-link:hover{color:var(--accent);padding-left:4px}
        .footer-social{display:flex;gap:.75rem;margin-top:1rem}
        .footer-social a{width:2.25rem;height:2.25rem;border-radius:.625rem;background:var(--glass);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.6);font-size:.875rem;transition:all .3s}
        .footer-social a:hover{color:var(--accent);border-color:rgba(47,191,113,.4);transform:translateY(-2px)}
        .footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding-top:1.5rem;display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:.75rem}
        @media(min-width:640px){.footer-bottom{flex-direction:row}}
        .footer-bottom p{font-size:.75rem;color:rgba(255,255,255,.3)}
        .icp-line{text-align:center;margin-top:.75rem;font-size:.75rem;color:rgba(255,255,255,.2)}

        .float-cta{position:fixed;right:1.25rem;bottom:1.25rem;z-index:99;display:flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,var(--aqua),var(--accent));color:#06210F;font-weight:700;font-size:.85rem;padding:.875rem 1.25rem;border-radius:9999px;box-shadow:0 16px 40px rgba(47,191,113,.4);opacity:0;visibility:hidden;transform:translateY(20px);transition:all .4s var(--ease)}
        .float-cta.visible{opacity:1;visibility:visible;transform:translateY(0)}
        .float-cta:hover{filter:brightness(1.1);box-shadow:0 20px 50px rgba(47,191,113,.5)}
        .float-cta .cta-text{max-width:0;overflow:hidden;white-space:nowrap;transition:max-width .4s var(--ease)}
        .float-cta:hover .cta-text{max-width:120px;margin-left:.25rem}
        @media(min-width:640px){.float-cta{padding:1rem 1.5rem}}

        @keyframes spin-slow{to{transform:rotate(360deg)}}
        @keyframes float-slow{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

        .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);border:none;margin:0}

/* roulang page: category3 */
:root {
            --primary: #0B1632;
            --secondary: #10233F;
            --accent: #2FBF71;
            --aqua: #38E8C6;
            --text-main: rgba(255, 255, 255, 0.92);
            --text-weak: rgba(255, 255, 255, 0.55);
            --border-glass: rgba(255, 255, 255, 0.12);
            --radius-card: 1rem;
            --radius-panel: 1.5rem;
            --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.25);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background-color: var(--primary);
            color: var(--text-main);
            line-height: 1.8;
            overflow-x: hidden;
        }

        .container-x {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .glass-panel {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-radius: var(--radius-panel);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .glass-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            pointer-events: none;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            color: #06210F;
            font-weight: 700;
            border-radius: 9999px;
            padding: 0.75rem 1.8rem;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 24px rgba(47, 191, 113, 0.25);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 32px rgba(56, 232, 198, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.95);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(56, 232, 198, 0.5);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
            border-radius: 9999px;
            padding: 0.75rem 1.8rem;
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-1px);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(255, 255, 255, 0.3);
            outline-offset: 2px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: all 0.35s ease;
            background: transparent;
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            background: rgba(11, 22, 50, 0.85);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            padding: 0.4rem 0.75rem;
            border-radius: 0.5rem;
            transition: color 0.25s ease, background 0.25s ease;
            position: relative;
        }

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

        .nav-link.active {
            color: var(--aqua) !important;
            background: rgba(47, 191, 113, 0.12);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: min(85vw, 380px);
            height: 100vh;
            background: #0D1B36;
            z-index: 200;
            transition: right 0.4s ease;
            padding: 2rem 1.5rem;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
        }

        .mobile-drawer.open {
            right: 0;
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 150;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .page-hero {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            background-image: linear-gradient(135deg, rgba(11, 22, 50, 0.92), rgba(15, 29, 58, 0.75)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 8rem 0 4rem;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -6rem;
            right: -4rem;
            width: 22rem;
            height: 22rem;
            border-radius: 50%;
            border: 2px solid rgba(47, 191, 113, 0.3);
            background: radial-gradient(circle, rgba(56, 232, 198, 0.08), transparent 70%);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(47, 191, 113, 0.15);
            border: 1px solid rgba(47, 191, 113, 0.35);
            color: var(--aqua);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 0.3rem 1rem;
            border-radius: 9999px;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.35;
            color: rgba(255, 255, 255, 0.95);
        }

        .section-subtitle {
            color: var(--text-weak);
            font-size: 1rem;
            max-width: 36rem;
            line-height: 1.8;
        }

        .bento-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1.25rem;
            padding: 1.8rem;
            transition: all 0.35s ease;
            overflow: hidden;
            position: relative;
        }

        .bento-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(47, 191, 113, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .tip-card {
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1rem;
            padding: 1.4rem;
            transition: all 0.3s ease;
        }

        .tip-card:hover {
            border-color: rgba(47, 191, 113, 0.4);
            background: rgba(255, 255, 255, 0.07);
        }

        .tip-icon {
            width: 2.6rem;
            height: 2.6rem;
            min-width: 2.6rem;
            border-radius: 0.75rem;
            background: linear-gradient(135deg, rgba(47, 191, 113, 0.2), rgba(56, 232, 198, 0.2));
            border: 1px solid rgba(47, 191, 113, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--aqua);
            font-size: 1.1rem;
        }

        .step-line {
            position: relative;
            padding-left: 2.5rem;
        }

        .step-line::before {
            content: '';
            position: absolute;
            left: 0.75rem;
            top: 0.5rem;
            bottom: -1rem;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), rgba(47, 191, 113, 0.1));
        }

        .step-line:last-child::before {
            display: none;
        }

        .step-dot {
            position: absolute;
            left: 0;
            top: 0.4rem;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            font-weight: 800;
            color: #06210F;
            box-shadow: 0 0 16px rgba(47, 191, 113, 0.4);
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(47, 191, 113, 0.4);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.1rem 1.4rem;
            cursor: pointer;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
            gap: 1rem;
        }

        .faq-toggle {
            width: 1.6rem;
            height: 1.6rem;
            min-width: 1.6rem;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all 0.35s ease;
            color: rgba(255, 255, 255, 0.7);
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
            border-color: var(--accent);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 1.4rem;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.1rem;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(47, 191, 113, 0.12), rgba(56, 232, 198, 0.06));
            border: 1px solid rgba(47, 191, 113, 0.35);
            border-radius: 1.5rem;
            padding: 2.5rem 2rem;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 26rem;
            height: 26rem;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(56, 232, 198, 0.15), transparent 70%);
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        .float-cta {
            position: fixed;
            bottom: 1.8rem;
            right: 1.8rem;
            width: 3.2rem;
            height: 3.2rem;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--aqua), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06210F;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 8px 30px rgba(47, 191, 113, 0.4);
            transition: all 0.3s ease;
            z-index: 90;
            cursor: pointer;
            text-decoration: none;
            border: none;
            opacity: 0;
            visibility: hidden;
            transform: translateY(1rem);
        }

        .float-cta.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .float-cta:hover {
            width: 8.5rem;
            border-radius: 9999px;
            gap: 0.5rem;
        }

        .float-cta .btn-text {
            display: none;
            font-size: 0.85rem;
            white-space: nowrap;
        }

        .float-cta:hover .btn-text {
            display: inline;
        }

        .cover-img {
            border-radius: 0.85rem;
            object-fit: cover;
            width: 100%;
            height: 100%;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(47, 191, 113, 0.15);
            color: var(--aqua);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.15rem 0.7rem;
            border-radius: 0.4rem;
            border: 1px solid rgba(47, 191, 113, 0.25);
        }

        /* 竞技感弧线装饰 */
        .court-line-left {
            position: absolute;
            left: 0;
            top: 20%;
            width: 8rem;
            height: 8rem;
            border-left: 3px solid rgba(47, 191, 113, 0.3);
            border-top: 3px solid rgba(47, 191, 113, 0.3);
            border-radius: 100% 0 0 0;
            pointer-events: none;
        }

        .ball-trajectory {
            position: absolute;
            right: -3rem;
            top: 30%;
            width: 18rem;
            height: 9rem;
            border: 2px solid rgba(56, 232, 198, 0.2);
            border-left-color: transparent;
            border-bottom-color: transparent;
            border-radius: 100% 100% 0 0;
            transform: rotate(15deg);
            pointer-events: none;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: auto;
                padding-top: 7rem;
                padding-bottom: 3rem;
            }
            .float-cta {
                width: 2.8rem;
                height: 2.8rem;
                bottom: 1.2rem;
                right: 1.2rem;
            }
            .float-cta .btn-text {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 1.3rem;
            }
            .bento-card {
                padding: 1.2rem;
            }
            .tip-card {
                padding: 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --navy: #0B1632;
            --navy-deep: #081222;
            --navy-light: #10233F;
            --accent: #2FBF71;
            --aqua: #38E8C6;
            --text-main: #E8EDF7;
            --text-sub: rgba(255, 255, 255, 0.55);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.14);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 20px 40px -12px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 8px 32px rgba(47, 191, 113, 0.25);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--navy);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img,
        svg {
            display: block;
            max-width: 100%;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 640px) {
            .container-x {
                padding: 0 1.75rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding: 0 2rem;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: transparent;
            transition: background .3s, box-shadow .3s, border-color .3s;
            border-bottom: 1px solid transparent;
        }
        .site-header.scrolled {
            background: rgba(11, 22, 50, .82);
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            border-bottom-color: rgba(255, 255, 255, .06);
            box-shadow: 0 10px 40px -12px rgba(0, 0, 0, .5);
        }
        .nav-link {
            position: relative;
            font-size: .92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .68);
            padding: 6px 2px;
            transition: color .25s;
        }
        .nav-link:hover {
            color: var(--aqua);
        }
        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--accent), var(--aqua));
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            color: #06210F;
            font-weight: 700;
            font-size: .92rem;
            box-shadow: 0 4px 20px rgba(47, 191, 113, .25);
            transition: transform .25s, box-shadow .25s, filter .25s;
            white-space: nowrap;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 6px 30px rgba(47, 191, 113, .4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(.95);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(56, 232, 198, .5);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            font-size: .92rem;
            background: transparent;
            transition: background .25s, border-color .25s, transform .25s;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .5);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(255, 255, 255, .3);
            outline-offset: 2px;
        }
        .mobile-menu-btn {
            display: inline-flex;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, .15);
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            transition: background .2s;
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, .08);
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 78%;
            max-width: 340px;
            height: 100vh;
            background: rgba(8, 18, 34, .97);
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            z-index: 1000;
            padding: 24px 28px;
            transition: right .35s cubic-bezier(.4, 0, .2, 1);
            border-left: 1px solid rgba(255, 255, 255, .07);
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s, visibility .3s;
        }
        .drawer-backdrop.open {
            opacity: 1;
            visibility: visible;
        }
        .drawer-link {
            display: block;
            padding: 14px 10px;
            font-size: 1rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .75);
            border-radius: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            transition: background .2s, color .2s, padding-left .2s;
        }
        .drawer-link:hover {
            background: rgba(255, 255, 255, .06);
            color: var(--aqua);
            padding-left: 16px;
        }
        .drawer-link.active {
            color: var(--accent);
            font-weight: 700;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 72vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
            padding-bottom: 60px;
            background: linear-gradient(135deg, #0B1632 0%, #0F1D3A 55%, #0B1632 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 20% 60%, rgba(47, 191, 113, .15) 0%, transparent 45%),
                radial-gradient(circle at 80% 30%, rgba(56, 232, 198, .12) 0%, transparent 40%);
            pointer-events: none;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .22;
            z-index: 1;
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 22, 50, .92) 0%, rgba(11, 22, 50, .65) 45%, rgba(11, 22, 50, .35) 100%);
            z-index: 2;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 3;
            max-width: 720px;
        }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .5);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 24px;
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .65);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--aqua);
        }
        .category-hero h1 {
            font-size: clamp(2rem, 5vw, 3.25rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: .02em;
            margin-bottom: 18px;
        }
        .category-hero h1 .highlight {
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .category-hero .subtitle {
            font-size: clamp(1rem, 2vw, 1.15rem);
            color: rgba(255, 255, 255, .72);
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .75);
            background: rgba(255, 255, 255, .05);
            border: 1px dashed rgba(255, 255, 255, .2);
            padding: 5px 14px;
            border-radius: 999px;
        }
        .hero-badge i {
            color: var(--accent);
        }
        /* 球体轨迹装饰 */
        .hero-orbit {
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            border: 1.5px solid rgba(56, 232, 198, .12);
            z-index: 2;
            pointer-events: none;
        }
        .hero-orbit::before {
            content: '';
            position: absolute;
            top: 18%;
            left: 22%;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 20px rgba(47, 191, 113, .6);
        }
        .hero-orbit::after {
            content: '';
            position: absolute;
            inset: 28px;
            border-radius: 50%;
            border: 1px dashed rgba(255, 255, 255, .08);
        }
        @media (max-width: 768px) {
            .hero-orbit {
                display: none;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: .8rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(47, 191, 113, .12);
            border: 1px solid rgba(47, 191, 113, .25);
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: .04em;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: clamp(1.65rem, 3.6vw, 2.4rem);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .section-header p {
            color: rgba(255, 255, 255, .55);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* ===== 复古网格线背景 ===== */
        .grid-bg {
            background-image: linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
            background-size: 28px 28px;
        }

        /* ===== 信任条 ===== */
        .trust-strip {
            position: relative;
            z-index: 5;
            margin-top: -32px;
            margin-bottom: 20px;
        }
        .trust-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 16px;
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            box-shadow: 0 16px 40px -12px rgba(0, 0, 0, .4);
            transition: border-color .3s, transform .3s;
        }
        .trust-card:hover {
            border-color: rgba(47, 191, 113, .4);
            transform: translateY(-3px);
        }
        .trust-card .icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(56, 232, 198, .15), rgba(47, 191, 113, .15));
            border: 1px solid rgba(56, 232, 198, .3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--aqua);
            font-size: 1.05rem;
            flex-shrink: 0;
        }
        .trust-card .num {
            font-size: 1.35rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
        }
        .trust-card .label {
            font-size: .82rem;
            color: rgba(255, 255, 255, .5);
            line-height: 1.4;
        }

        /* ===== 卡片系统 ===== */
        .feature-card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            position: relative;
            overflow: hidden;
            transition: transform .3s, border-color .3s, box-shadow .3s;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(47, 191, 113, .4), transparent);
            opacity: 0;
            transition: opacity .3s;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(47, 191, 113, .35);
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, .5);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(47, 191, 113, .2), rgba(56, 232, 198, .15));
            border: 1px solid rgba(47, 191, 113, .3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .feature-card p {
            font-size: .9rem;
            color: rgba(255, 255, 255, .55);
            line-height: 1.7;
        }
        .feature-card.wide {
            grid-column: span 2;
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 36px;
            max-width: 680px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, rgba(47, 191, 113, .5), rgba(56, 232, 198, .2));
        }
        .timeline-item {
            position: relative;
            padding-bottom: 36px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item .dot {
            position: absolute;
            left: -36px;
            top: 6px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: #0B1632;
            border: 2px solid var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .7rem;
            font-weight: 700;
            color: var(--accent);
            box-shadow: 0 0 0 4px rgba(47, 191, 113, .12);
        }
        .timeline-item .card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            transition: border-color .3s, background .3s;
        }
        .timeline-item .card:hover {
            border-color: rgba(47, 191, 113, .3);
            background: rgba(255, 255, 255, .07);
        }
        .timeline-item .card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .timeline-item .card p {
            font-size: .88rem;
            color: rgba(255, 255, 255, .5);
            line-height: 1.7;
        }

        /* ===== 图文区块 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .split-media {
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .1);
            box-shadow: 0 24px 50px -15px rgba(0, 0, 0, .5);
            position: relative;
        }
        .split-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .split-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 22, 50, .2));
            pointer-events: none;
        }
        .split-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
            line-height: 1.4;
        }
        .split-body p {
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            margin-bottom: 14px;
            font-size: .95rem;
        }
        .check-list {
            list-style: none;
            padding: 0;
            margin: 18px 0 0;
        }
        .check-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 8px 0;
            font-size: .92rem;
            color: rgba(255, 255, 255, .7);
            border-bottom: 1px dashed rgba(255, 255, 255, .07);
        }
        .check-list li:last-child {
            border-bottom: none;
        }
        .check-list li i {
            color: var(--accent);
            margin-top: 5px;
            font-size: .82rem;
        }
        @media (max-width: 768px) {
            .split-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .split-media img {
                height: 220px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s;
        }
        .faq-item:hover {
            border-color: rgba(47, 191, 113, .3);
        }
        .faq-item.open {
            border-color: rgba(47, 191, 113, .4);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: background .2s;
            user-select: none;
        }
        .faq-q:hover {
            background: rgba(255, 255, 255, .03);
        }
        .faq-q .icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(47, 191, 113, .15);
            border: 1px solid rgba(47, 191, 113, .3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: .85rem;
            flex-shrink: 0;
            transition: transform .3s;
        }
        .faq-item.open .faq-q .icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 24px;
            font-size: .92rem;
            color: rgba(255, 255, 255, .55);
            line-height: 1.8;
            border-top: 0 solid rgba(255, 255, 255, .06);
        }
        .faq-item.open .faq-a {
            max-height: 320px;
            padding: 0 24px 20px;
            border-top-width: 1px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            overflow: hidden;
            background: linear-gradient(135deg, #0B1632, #0F1D3A);
            border-top: 1px solid rgba(255, 255, 255, .05);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .12;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            padding: 48px 36px;
            border-radius: 24px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .12);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .5);
        }
        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .6);
            margin-bottom: 28px;
            font-size: .98rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--navy-deep);
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding-top: 64px;
            padding-bottom: 32px;
        }
        .footer-link {
            font-size: .88rem;
            color: rgba(255, 255, 255, .45);
            transition: color .2s, padding-left .2s;
        }
        .footer-link:hover {
            color: var(--aqua);
            padding-left: 4px;
        }

        /* ===== 浮动 CTA ===== */
        .float-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 900;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            color: #06210F;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: .82rem;
            box-shadow: 0 10px 30px rgba(47, 191, 113, .35);
            transition: width .3s, border-radius .3s, transform .3s;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            white-space: nowrap;
            overflow: hidden;
        }
        .float-cta.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .float-cta:hover {
            width: 128px;
            border-radius: 999px;
            justify-content: center;
            gap: 6px;
        }
        .float-cta:hover::before {
            content: '获取入口';
            font-size: .82rem;
        }
        .float-cta i {
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        @media (max-width: 640px) {
            .float-cta {
                right: 16px;
                bottom: 16px;
                width: 48px;
                height: 48px;
            }
            .float-cta:hover {
                width: 48px;
                border-radius: 50%;
            }
            .float-cta:hover::before {
                content: '';
            }
        }

        /* ===== 动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity .6s cubic-bezier(.4, 0, .2, 1), transform .6s cubic-bezier(.4, 0, .2, 1);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 相关推荐卡 ===== */
        .rel-card {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 20px;
            display: flex;
            gap: 16px;
            align-items: center;
            transition: border-color .3s, transform .3s, background .3s;
        }
        .rel-card:hover {
            border-color: rgba(47, 191, 113, .35);
            transform: translateY(-3px);
            background: rgba(255, 255, 255, .06);
        }
        .rel-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(47, 191, 113, .18), rgba(56, 232, 198, .12));
            border: 1px solid rgba(47, 191, 113, .25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .rel-card h4 {
            font-size: .95rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.45;
            margin-bottom: 2px;
        }
        .rel-card span {
            font-size: .78rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== 表单 ===== */
        .form-input {
            width: 100%;
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 12px;
            padding: 12px 16px;
            color: #fff;
            font-size: .92rem;
            transition: border-color .25s, box-shadow .25s;
        }
        .form-input::placeholder {
            color: rgba(255, 255, 255, .35);
        }
        .form-input:focus {
            outline: none;
            border-color: rgba(47, 191, 113, .6);
            box-shadow: 0 0 0 3px rgba(47, 191, 113, .15);
        }
        .form-label {
            display: block;
            font-size: .85rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 6px;
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 22px;
            display: flex;
            flex-direction: column;
            transition: border-color .3s, transform .3s;
        }
        .content-card:hover {
            border-color: rgba(47, 191, 113, .35);
            transform: translateY(-4px);
        }
        .content-card .tag {
            align-self: flex-start;
            font-size: .75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(47, 191, 113, .1);
            border: 1px solid rgba(47, 191, 113, .2);
            padding: 2px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .content-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .content-card p {
            font-size: .88rem;
            color: rgba(255, 255, 255, .5);
            line-height: 1.7;
            flex: 1;
        }
        .content-card .meta {
            font-size: .8rem;
            color: rgba(255, 255, 255, .35);
            margin-top: 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* ===== 复古装饰元素 ===== */
        .vintage-border {
            position: relative;
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 20px;
        }
        .vintage-border::after {
            content: '';
            position: absolute;
            inset: 6px;
            border: 1px dashed rgba(255, 255, 255, .06);
            border-radius: 14px;
            pointer-events: none;
        }

/* roulang page: category4 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0B1632;
            --panel: #10233F;
            --accent: #2FBF71;
            --aqua: #38E8C6;
            --text-main: #E8ECF2;
            --text-muted: rgba(255, 255, 255, 0.55);
            --border-glass: rgba(255, 255, 255, 0.12);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --radius-lg: 1.5rem;
            --radius-md: 1rem;
            --radius-sm: 0.75rem;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--primary);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        /* ========== 容器 ========== */
        .container-x {
            width: 100%;
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== 区块通用 ========== */
        .section-padding {
            padding-top: 4.5rem;
            padding-bottom: 4.5rem;
        }

        @media (min-width: 640px) {
            .section-padding {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.3rem 1rem;
            border-radius: 999px;
            background: rgba(47, 191, 113, 0.1);
            border: 1px solid rgba(47, 191, 113, 0.3);
            color: #2FBF71;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            margin-bottom: 1rem;
        }

        .section-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 999px;
            background: #2FBF71;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
        }

        @media (min-width: 640px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        .section-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(11, 22, 50, 0.6);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background-color 0.4s ease, box-shadow 0.4s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 22, 50, 0.92);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, 0.68);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.35rem 0.15rem;
            transition: color 0.25s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #38E8C6;
        }

        .nav-link.active {
            color: #2FBF71;
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #2FBF71, #38E8C6);
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            color: #06210F;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(47, 191, 113, 0.25);
            text-decoration: none;
            line-height: 1;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 12px 36px rgba(47, 191, 113, 0.4);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: scale(0.96);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(56, 232, 198, 0.5);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: 9999px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            line-height: 1;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: scale(0.96);
        }

        /* ========== 玻璃卡片 ========== */
        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 1rem;
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            position: relative;
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 12%;
            right: 12%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
        }

        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            border-color: rgba(47, 191, 113, 0.35);
        }

        /* ========== 安全卡片 ========== */
        .security-card {
            position: relative;
            padding: 2rem 1.75rem;
            border-radius: 1.25rem;
            background: linear-gradient(145deg, rgba(16, 35, 63, 0.6), rgba(11, 22, 50, 0.9));
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
            transition: all 0.35s ease;
            overflow: hidden;
        }

        .security-card::after {
            content: '';
            position: absolute;
            right: -30px;
            top: -30px;
            width: 90px;
            height: 90px;
            border-radius: 999px;
            border: 1.5px dashed rgba(47, 191, 113, 0.15);
            transition: transform 0.4s ease;
        }

        .security-card:hover::after {
            transform: rotate(45deg) scale(1.15);
        }

        .security-card:hover {
            border-color: rgba(47, 191, 113, 0.35);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            transform: translateY(-4px);
        }

        .security-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(47, 191, 113, 0.2), rgba(56, 232, 198, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(47, 191, 113, 0.2);
        }

        .security-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.65rem;
        }

        .security-card p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.75;
        }

        /* ========== 置顶推荐大卡 ========== */
        .featured-card {
            position: relative;
            border-radius: 1.5rem;
            overflow: hidden;
            background: linear-gradient(155deg, #10233F 0%, #0B1632 100%);
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
            transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
        }

        .featured-card:hover {
            transform: translateY(-6px);
            border-color: rgba(47, 191, 113, 0.4);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
        }

        .featured-card .featured-pattern {
            position: absolute;
            right: 0;
            top: 0;
            width: 45%;
            height: 100%;
            background-image: radial-gradient(rgba(47, 191, 113, 0.08) 1px, transparent 1px);
            background-size: 18px 18px;
            border-left: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* ========== 问题列表 ========== */
        .issue-item {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 1.5rem 1.75rem;
            border-radius: 1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .issue-item:hover {
            background: rgba(47, 191, 113, 0.08);
            border-color: rgba(47, 191, 113, 0.3);
            transform: translateX(4px);
        }

        .issue-item .issue-num {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(47, 191, 113, 0.2), rgba(56, 232, 198, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            font-weight: 700;
            color: #2FBF71;
            border: 1px solid rgba(47, 191, 113, 0.2);
        }

        .issue-item .issue-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }

        .issue-item .issue-content p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 0.25rem;
        }

        .issue-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-top: 0.4rem;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ========== 相关内容卡片 ========== */
        .related-card {
            position: relative;
            border-radius: 1.25rem;
            overflow: hidden;
            background: #10233F;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.35s ease;
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(47, 191, 113, 0.35);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .related-card .related-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .related-card .related-body {
            padding: 1.5rem;
        }

        .related-card .related-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .related-card .related-body p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-item {
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item.active {
            background: rgba(47, 191, 113, 0.05);
            border-color: rgba(47, 191, 113, 0.25);
        }

        .faq-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            text-align: left;
            padding: 1.4rem 1.75rem;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            transition: color 0.2s ease;
            line-height: 1.4;
        }

        .faq-btn:hover {
            color: #38E8C6;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #2FBF71;
            transition: transform 0.35s ease, background 0.3s ease;
            line-height: 1;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: rgba(47, 191, 113, 0.15);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.75rem;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .faq-content-inner {
            padding-bottom: 1.5rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: linear-gradient(145deg, #10233F, #0B1632);
            border: 1px solid rgba(47, 191, 113, 0.15);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(47, 191, 113, 0.05) 1px, transparent 1px);
            background-size: 22px 22px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: rgba(6, 14, 34, 1);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #38E8C6;
        }

        /* ========== 移动端菜单 ========== */
        .hamburger-btn {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            padding: 10px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hamburger-btn span {
            display: block;
            height: 2px;
            width: 100%;
            border-radius: 2px;
            background: #fff;
            transition: all 0.3s ease;
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 1rem 1.5rem 1.5rem;
            background: rgba(11, 22, 50, 0.98);
            backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            padding: 0.8rem 0.75rem;
            border-radius: 0.75rem;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #38E8C6;
        }

        .mobile-menu a.active {
            color: #2FBF71;
            font-weight: 700;
            background: rgba(47, 191, 113, 0.1);
        }

        /* ========== 装饰 ========== */
        .hero-orbit {
            position: absolute;
            right: 4%;
            bottom: 15%;
            width: 360px;
            height: 360px;
            pointer-events: none;
            opacity: 0.45;
            animation: floatOrbit 10s ease-in-out infinite;
        }

        @keyframes floatOrbit {
            0%,
            100% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-18px) rotate(8deg);
            }
        }

        .dot-grid-bg {
            background-image: radial-gradient(rgba(56, 232, 198, 0.06) 1px, transparent 1px);
            background-size: 26px 26px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .nav-desktop {
                display: none;
            }
            .btn-header-desktop {
                display: none;
            }
        }

        @media (min-width: 1024px) {
            .hamburger-btn {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .hero-orbit {
                width: 220px;
                height: 220px;
                right: -40px;
            }
            .featured-card .featured-pattern {
                width: 60%;
            }
        }

        /* ========== 浮动 CTA ========== */
        .float-cta {
            position: fixed;
            right: 1.75rem;
            bottom: 1.75rem;
            z-index: 90;
            width: 54px;
            height: 54px;
            border-radius: 999px;
            background: linear-gradient(135deg, #38E8C6, #2FBF71);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06210F;
            font-weight: 700;
            font-size: 0.8rem;
            box-shadow: 0 10px 36px rgba(47, 191, 113, 0.4);
            opacity: 0;
            transform: scale(0.8);
            pointer-events: none;
            transition: all 0.35s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.2;
        }

        .float-cta.visible {
            opacity: 1;
            transform: scale(1);
            pointer-events: auto;
        }

        .float-cta:hover {
            width: 120px;
            border-radius: 999px;
            filter: brightness(1.1);
        }

        @media (max-width: 520px) {
            .float-cta {
                width: 48px;
                height: 48px;
                right: 1rem;
                bottom: 1rem;
            }
            .float-cta:hover {
                width: 48px;
                height: 48px;
            }
        }