/* roulang page: index */
:root {
            --bg-page: #090D12;
            --bg-card: #101720;
            --bg-float: #0D141C;
            --bg-nav: #070B10;
            --primary: #17E6C8;
            --secondary: #7C5CFF;
            --pink: #FF3C9E;
            --ti: #F0F6FC;
            --tx: #A9B6C8;
            --mut: #6F7C8F;
            --dark-btn: #06120F;
            --line: rgba(255, 255, 255, .06);
            --radius: 12px;
            --radius-lg: 16px;
            --shadow: 0 6px 20px rgba(23, 230, 200, .06);
            --glow: 0 0 60px rgba(23, 230, 200, .15);
            --space: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-page);
            color: var(--tx);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

        button {
            border: none;
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible,
        .btn:focus,
        .accordion-button:focus,
        .carousel-control-prev:focus,
        .carousel-control-next:focus,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(23, 230, 200, .15);
        }

        .container {
            max-width: 1200px;
        }

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

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            position: relative;
            padding-left: 24px;
        }

        .section-head::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--pink));
            border-radius: 2px;
        }

        .section-head h2 {
            font-size: 30px;
            line-height: 38px;
            font-weight: 700;
            color: var(--ti);
            margin: 0;
        }

        .section-head .head-note {
            font-size: 13px;
            color: var(--mut);
            letter-spacing: 1px;
        }

        .section-head a.more-link {
            font-size: 13px;
            color: var(--mut);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color .2s, transform .2s;
        }

        .section-head a.more-link:hover {
            color: var(--ti);
        }

        .section-head a.more-link span {
            transition: transform .2s;
        }

        .section-head a.more-link:hover span {
            transform: translateX(2px);
        }

        /* ---------- 导航 ---------- */
        .site-header {
            background: var(--bg-nav);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(90deg, rgba(23, 230, 200, .6), rgba(255, 60, 158, .6));
            background-clip: padding-box;
            background-size: 100% 1px;
            background-position: bottom;
            background-repeat: no-repeat;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .site-header .nav-wrap {
            display: flex;
            align-items: center;
            height: 60px;
            justify-content: space-between;
            position: relative;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0;
            line-height: 1;
            flex-shrink: 0;
        }

        .brand:hover {
            color: #fff;
        }

        .brand .brand-icon {
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-list .nav-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--tx);
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: color .2s;
        }

        .nav-list .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--pink));
            border-radius: 2px;
            transition: width .25s ease;
        }

        .nav-list .nav-link:hover {
            color: #fff;
        }

        .nav-list .nav-link:hover::after {
            width: 24px;
        }

        .nav-list .nav-link.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(23, 230, 200, .35);
        }

        .nav-list .nav-link.active::after {
            width: 24px;
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 22px;
            background: var(--primary);
            color: var(--dark-btn);
            font-size: 13px;
            font-weight: 600;
            border-radius: 8px;
            line-height: 1;
            transition: background .2s, box-shadow .2s, transform .15s;
            flex-shrink: 0;
        }

        .btn-nav:hover {
            background: var(--pink);
            color: #fff;
            box-shadow: 0 0 24px rgba(255, 60, 158, .35);
            transform: translateY(-1px);
        }

        .btn-nav:active {
            transform: scale(.97);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--line);
            border-radius: 8px;
            color: var(--ti);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: border-color .2s, background .2s;
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            background: rgba(23, 230, 200, .08);
        }

        /* ---------- Hero ---------- */
        .hero-section {
            position: relative;
            padding: 72px 0 80px;
            overflow: hidden;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: .35;
            z-index: 0;
        }

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

        .hero-content {
            padding-top: 12px;
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(23, 230, 200, .1);
            border: 1px solid rgba(23, 230, 200, .3);
            color: var(--primary);
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 18px;
            font-weight: 500;
        }

        .hero-content h1 {
            font-size: 40px;
            line-height: 48px;
            font-weight: 800;
            color: var(--ti);
            margin-bottom: 16px;
            letter-spacing: 0;
        }

        .hero-content h1 .hl {
            text-decoration: underline;
            text-underline-offset: 6px;
            text-decoration-color: var(--primary);
            text-decoration-thickness: 3px;
        }

        .hero-sub {
            font-size: 15px;
            color: var(--tx);
            margin-bottom: 18px;
            max-width: 460px;
            line-height: 1.7;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .hero-tags .tag {
            font-size: 13px;
            color: var(--mut);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-tags .tag + .tag::before {
            content: "·";
            color: var(--mut);
        }

        .hero-btns {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .btn-primary-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            background: var(--primary);
            color: var(--dark-btn);
            font-size: 14px;
            font-weight: 700;
            border-radius: 8px;
            border: none;
            line-height: 1;
            transition: background .25s, box-shadow .25s, transform .15s;
            cursor: pointer;
        }

        .btn-primary-neon:hover {
            background: var(--pink);
            color: #fff;
            box-shadow: 0 0 28px rgba(255, 60, 158, .4);
            transform: translateY(-1px);
        }

        .btn-primary-neon:active {
            transform: scale(.97);
        }

        .btn-outline-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 26px;
            background: transparent;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            border: 1px solid var(--primary);
            line-height: 1;
            transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
            cursor: pointer;
        }

        .btn-outline-neon:hover {
            background: rgba(23, 230, 200, .1);
            color: var(--primary);
            box-shadow: 0 0 18px rgba(23, 230, 200, .2);
        }

        .btn-outline-neon:active {
            transform: scale(.97);
        }

        .hero-note {
            font-size: 12px;
            color: var(--mut);
        }

        .hero-visual {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .08);
            box-shadow: var(--glow);
            position: relative;
            aspect-ratio: 16 / 10;
            background: var(--bg-card);
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transform: scale(1.02);
            transition: transform .3s ease;
        }

        .hero-visual:hover img {
            transform: scale(1);
        }

        /* ---------- 轮播 ---------- */
        .carousel-section {
            background: var(--bg-page);
        }

        .carousel-neon {
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            border: 1px solid var(--line);
            box-shadow: 0 12px 40px rgba(0, 0, 0, .4);
        }

        .carousel-neon .carousel-inner {
            border-radius: 16px;
            overflow: hidden;
        }

        .carousel-neon .carousel-item img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .carousel-neon .carousel-item::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, rgba(9, 13, 18, .85));
            pointer-events: none;
        }

        .carousel-neon .carousel-caption-custom {
            position: absolute;
            left: 24px;
            bottom: 18px;
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
            font-weight: 500;
            z-index: 2;
            text-shadow: 0 2px 12px rgba(0, 0, 0, .5);
        }

        .carousel-neon .carousel-indicators {
            bottom: 16px;
            margin: 0;
        }

        .carousel-neon .carousel-indicators [data-bs-target] {
            width: 6px;
            height: 6px;
            border-radius: 100px;
            background: rgba(255, 255, 255, .4);
            border: none;
            opacity: 1;
            margin: 0 4px;
            transition: all .3s ease;
        }

        .carousel-neon .carousel-indicators .active {
            background: var(--primary);
            width: 10px;
        }

        .carousel-neon .carousel-control-prev,
        .carousel-neon .carousel-control-next {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .15);
            top: 50%;
            bottom: auto;
            transform: translateY(-50%);
            left: 20px;
            opacity: 1;
            transition: background .2s, border-color .2s;
        }

        .carousel-neon .carousel-control-next {
            left: auto;
            right: 20px;
        }

        .carousel-neon .carousel-control-prev:hover,
        .carousel-neon .carousel-control-next:hover {
            background: rgba(23, 230, 200, .12);
            border-color: rgba(23, 230, 200, .3);
        }

        .carousel-neon .carousel-control-prev-icon,
        .carousel-neon .carousel-control-next-icon {
            filter: none;
            opacity: .8;
        }

        /* ---------- 系统要求 ---------- */
        .sys-section {
            background: var(--bg-page);
        }

        .sys-card {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--line);
            height: 100%;
        }

        .sys-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ti);
            margin-bottom: 18px;
        }

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

        .sys-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            line-height: 36px;
            font-size: 14px;
            color: var(--tx);
            border-bottom: 1px solid rgba(255, 255, 255, .03);
        }

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

        .sys-list li::before {
            content: "";
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
            margin-right: 12px;
            opacity: .9;
        }

        .sys-list li .status {
            font-size: 12px;
            color: var(--mut);
            margin-left: auto;
            flex-shrink: 0;
        }

        .sys-footnote {
            margin-top: 20px;
            font-size: 12px;
            color: var(--mut);
        }

        /* ---------- 评价墙 ---------- */
        .review-section {
            background: var(--bg-page);
        }

        .review-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--line);
            height: 100%;
            position: relative;
            transition: box-shadow .3s, border-color .3s;
            overflow: hidden;
        }

        .review-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 2px;
            height: 0;
            background: var(--primary);
            transition: height .3s ease;
        }

        .review-card:hover {
            box-shadow: 0 6px 20px rgba(23, 230, 200, .06);
            border-color: rgba(23, 230, 200, .2);
        }

        .review-card:hover::before {
            height: 100%;
        }

        .review-top {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #1A2330;
            border: 1px solid rgba(23, 230, 200, .5);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            flex-shrink: 0;
        }

        .review-user {
            flex: 1;
            min-width: 0;
        }

        .review-name {
            font-size: 13px;
            color: var(--ti);
            font-weight: 500;
        }

        .review-stars {
            display: flex;
            gap: 2px;
            margin-top: 2px;
            font-size: 14px;
            color: #3A4454;
            line-height: 1;
        }

        .review-stars .filled {
            color: var(--primary);
        }

        .review-text {
            font-size: 14px;
            line-height: 22px;
            color: var(--tx);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        /* ---------- 资讯列表 ---------- */
        .news-section {
            background: var(--bg-page);
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--line);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: box-shadow .3s, border-color .3s, transform .2s;
        }

        .news-card:hover {
            box-shadow: 0 8px 24px rgba(23, 230, 200, .08);
            border-color: rgba(23, 230, 200, .2);
            transform: translateY(-3px);
        }

        .news-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: #0D141C;
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }

        .news-card:hover .news-cover img {
            transform: scale(1.04);
        }

        .news-body {
            padding: 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
            position: relative;
        }

        .news-cat {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            font-size: 12px;
            color: var(--primary);
            border: 1px solid rgba(23, 230, 200, .4);
            border-radius: 100px;
            padding: 2px 10px;
            margin-bottom: 10px;
            background: rgba(23, 230, 200, .06);
        }

        .news-title {
            font-size: 15px;
            line-height: 22px;
            font-weight: 600;
            color: var(--ti);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s;
        }

        .news-card:hover .news-title {
            color: var(--primary);
        }

        .news-summary {
            font-size: 13px;
            line-height: 20px;
            color: var(--mut);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--mut);
            margin-top: auto;
        }

        .news-meta .arrow {
            opacity: 0;
            transform: translateX(-6px);
            transition: all .2s;
            font-size: 14px;
            color: var(--primary);
        }

        .news-card:hover .news-meta .arrow {
            opacity: 1;
            transform: translateX(0);
        }

        .stretched-link::after {
            position: absolute;
            inset: 0;
            z-index: 2;
            content: "";
        }

        .empty-state {
            text-align: center;
            padding: 40px 0;
            color: var(--mut);
            font-size: 13px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--line);
            width: 100%;
        }

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

        .faq-panel {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: var(--bg-card);
            color: var(--ti);
            font-size: 15px;
            font-weight: 500;
            min-height: 46px;
            padding: 0 20px;
            box-shadow: none;
            border-radius: var(--radius) !important;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background .2s;
        }

        .accordion-custom .accordion-button:hover {
            background: rgba(23, 230, 200, .04);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(23, 230, 200, .06);
            color: var(--primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            display: none;
        }

        .accordion-custom .faq-icon {
            font-size: 14px;
            color: var(--mut);
            transition: transform .15s ease, color .15s;
            flex-shrink: 0;
            line-height: 1;
            width: 20px;
            text-align: center;
        }

        .accordion-custom .accordion-button:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .accordion-custom .accordion-body {
            padding: 16px 20px 20px;
            font-size: 14px;
            line-height: 24px;
            color: var(--tx);
            border-top: 1px solid rgba(255, 255, 255, .04);
        }

        /* ---------- 底部CTA ---------- */
        .cta-section {
            background: var(--bg-nav);
            border-top: 1px solid transparent;
            background-image: linear-gradient(90deg, rgba(23, 230, 200, .4), rgba(255, 60, 158, .4));
            background-clip: padding-box;
            background-size: 100% 1px;
            background-position: top;
            background-repeat: no-repeat;
            text-align: center;
            padding: 64px 0 72px;
        }

        .cta-section h2 {
            font-size: 30px;
            line-height: 38px;
            font-weight: 700;
            color: var(--ti);
            margin-bottom: 14px;
        }

        .cta-section .cta-sub {
            font-size: 14px;
            color: var(--mut);
            margin-bottom: 28px;
        }

        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .cta-note {
            font-size: 12px;
            color: var(--mut);
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--line);
            padding: 48px 0 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 700;
            color: var(--ti);
            margin-bottom: 12px;
        }

        .footer-brand svg {
            opacity: .8;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--mut);
            line-height: 1.7;
            max-width: 240px;
        }

        .footer-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--ti);
            margin-bottom: 14px;
        }

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

        .footer-links li {
            line-height: 28px;
        }

        .footer-links a {
            font-size: 12px;
            color: var(--mut);
            display: inline-block;
            position: relative;
            transition: color .2s, padding-left .2s;
        }

        .footer-links a::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width .2s;
        }

        .footer-links a:hover {
            color: var(--ti);
            padding-left: 12px;
        }

        .footer-links a:hover::before {
            width: 6px;
        }

        .footer-contact {
            font-size: 13px;
            color: var(--mut);
            line-height: 26px;
            margin-bottom: 8px;
        }

        .footer-hours {
            font-size: 12px;
            color: var(--mut);
            opacity: .8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .04);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 12px;
            color: #4A5565;
            text-align: center;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 991.98px) {
            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--line);
                display: none;
                z-index: 999;
            }

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

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                margin-bottom: 12px;
            }

            .nav-list .nav-link {
                display: block;
                line-height: 44px;
                padding: 0 12px;
                font-size: 14px;
                border-radius: 6px;
            }

            .nav-list .nav-link.active {
                border-left: 3px solid var(--primary);
                background: rgba(23, 230, 200, .06);
            }

            .nav-list .nav-link::after {
                display: none;
            }

            .main-nav .btn-nav {
                align-self: flex-start;
                margin-left: 12px;
                margin-top: 4px;
            }

            .hero-content h1 {
                font-size: 32px;
                line-height: 40px;
            }
        }

        @media (max-width: 767.98px) {
            .section-space {
                padding: 48px 0;
            }

            .section-head h2 {
                font-size: 22px;
                line-height: 30px;
            }

            .carousel-neon .carousel-item img {
                height: 260px;
            }

            .carousel-neon .carousel-caption-custom {
                left: 16px;
                bottom: 14px;
                font-size: 13px;
            }

            .hero-section {
                padding: 48px 0 56px;
            }

            .hero-content h1 {
                font-size: 28px;
                line-height: 36px;
            }

            .hero-sub {
                font-size: 14px;
            }

            .sys-card {
                padding: 20px;
            }

            .cta-section h2 {
                font-size: 22px;
                line-height: 30px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-btns .btn-primary-neon,
            .hero-btns .btn-outline-neon {
                width: 100%;
            }

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

            .cta-btns .btn-primary-neon,
            .cta-btns .btn-outline-neon {
                width: 100%;
            }

            .footer-bottom {
                font-size: 11px;
                line-height: 1.6;
            }
        }

/* roulang page: category1 */
:root {
            --bg-body: #090D12;
            --bg-card: #101720;
            --bg-overlay: #0D141C;
            --bg-header: #070B10;
            --primary: #17E6C8;
            --secondary: #7C5CFF;
            --accent: #FF3C9E;
            --text-title: #F0F6FC;
            --text-body: #A9B6C8;
            --text-muted: #6F7C8F;
            --text-btn: #06120F;
            --border-subtle: rgba(255,255,255,.06);
            --border-strong: rgba(255,255,255,.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-glow: 0 0 60px rgba(23,230,200,.15);
            --shadow-card: 0 6px 20px rgba(0,0,0,.25);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --sect-space: 72px;
            --sect-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .2s ease;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-header);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 1px 0 rgba(23, 230, 200, .08);
            height: 60px;
        }

        .site-header::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, rgba(23, 230, 200, .7) 0%, rgba(23, 230, 200, 0) 30%, rgba(124, 92, 255, 0) 60%, rgba(255, 60, 158, .4) 100%);
            pointer-events: none;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            position: relative;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff !important;
            letter-spacing: .5px;
        }

        .brand-icon {
            flex-shrink: 0;
        }

        .brand span {
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
            justify-content: flex-end;
        }

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

        .nav-link {
            display: inline-block;
            padding: 6px 2px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            transition: color .2s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: translateX(-50%);
            transition: width .25s ease;
        }

        .nav-link:hover {
            color: #fff;
        }

        .nav-link:hover::after {
            width: 24px;
        }

        .nav-link.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(23, 230, 200, .35);
        }

        .nav-link.active::after {
            width: 24px;
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            background: var(--primary);
            color: var(--text-btn) !important;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: background .2s ease, box-shadow .2s ease, transform .15s ease;
        }

        .btn-nav:hover {
            background: var(--accent);
            box-shadow: 0 0 18px rgba(23, 230, 200, .25);
            transform: translateY(-1px);
        }

        .btn-nav:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-nav:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            padding: 8px;
            border-radius: 6px;
            color: #fff;
        }

        .nav-toggle:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background: var(--bg-card);
            padding: 64px 0 56px;
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .25;
            pointer-events: none;
        }

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

        .page-breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .page-breadcrumb a {
            color: var(--text-muted);
            transition: color .2s;
        }

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

        .page-breadcrumb .sep {
            color: #3A4454;
        }

        .page-breadcrumb .current {
            color: #C6D0DC;
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-title);
            margin: 0 0 10px;
            letter-spacing: 0;
        }

        .page-hero h1 .highlight {
            color: var(--primary);
            border-bottom: 3px solid var(--primary);
            padding-bottom: 2px;
        }

        .hero-sub {
            font-size: 16px;
            color: var(--text-body);
            margin: 0 0 28px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: var(--text-btn) !important;
            font-size: 15px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: background .25s, box-shadow .25s, transform .15s;
            border: none;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary) 60%, var(--accent));
            box-shadow: 0 0 24px rgba(23, 230, 200, .3);
            transform: translateY(-1px);
            color: var(--text-btn) !important;
        }

        .btn-primary:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(23, 230, 200, .15);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 28px;
            background: transparent;
            color: var(--primary) !important;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            transition: background .2s, box-shadow .2s, transform .15s;
        }

        .btn-outline:hover {
            background: rgba(23, 230, 200, .08);
            box-shadow: 0 0 14px rgba(23, 230, 200, .12);
            transform: translateY(-1px);
        }

        .btn-outline:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-outline:active {
            transform: translateY(0);
            background: rgba(23, 230, 200, .14);
        }

        .hero-meta {
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: var(--sect-space) 0;
        }

        .section-head {
            display: flex;
            align-items: center;
            margin-bottom: 32px;
            gap: 12px;
        }

        .section-head h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-title);
            margin: 0;
            position: relative;
            padding-left: 24px;
        }

        .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .section-head .section-note {
            margin-left: auto;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Info Cards ===== */
        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            position: relative;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .25s ease;
            z-index: 2;
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(23, 230, 200, .06);
            border-color: rgba(23, 230, 200, .2);
        }

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

        .info-card:focus-within {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .info-card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-overlay);
        }

        .info-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

        .info-card:hover .info-card-cover img {
            transform: scale(1.03);
        }

        .info-card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(7, 11, 16, .6));
            pointer-events: none;
        }

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

        .info-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .info-card-body p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-body);
            margin: 0 0 16px;
        }

        .info-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .2s ease, color .2s;
        }

        .info-card-link:hover {
            gap: 10px;
            color: #fff;
        }

        .info-card-link i {
            font-size: 12px;
        }

        /* ===== Scenario Section ===== */
        .scenario-section {
            background: var(--bg-body);
            border-top: 1px solid var(--border-subtle);
        }

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

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: background .25s, border-color .25s, box-shadow .25s;
            position: relative;
        }

        .scenario-card:hover {
            border-color: rgba(124, 92, 255, .35);
            box-shadow: 0 8px 28px rgba(124, 92, 255, .06);
            background: #121A24;
        }

        .scenario-card:focus-within {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(23, 230, 200, .1);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
            transition: background .25s, color .25s;
        }

        .scenario-card:nth-child(2) .scenario-icon {
            background: rgba(124, 92, 255, .1);
            color: var(--secondary);
        }

        .scenario-card:nth-child(3) .scenario-icon {
            background: rgba(255, 60, 158, .1);
            color: var(--accent);
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 8px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== Flow Section ===== */
        .flow-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-subtle);
        }

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

        .flow-step {
            position: relative;
            padding: 24px 20px;
            background: var(--bg-overlay);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: transform .2s ease, border-color .25s, box-shadow .25s;
        }

        .flow-step:hover {
            transform: translateY(-3px);
            border-color: rgba(23, 230, 200, .25);
            box-shadow: 0 8px 24px rgba(23, 230, 200, .05);
        }

        .flow-step:focus-within {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .flow-num {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 12px;
            display: block;
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 8px;
        }

        .flow-step p {
            font-size: 13px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.65;
        }

        /* ===== Security Section ===== */
        .security-wrap {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .security-info h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-title);
            margin: 0 0 18px;
            line-height: 1.35;
        }

        .security-info p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0 0 16px;
        }

        .security-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .security-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            font-size: 14px;
            color: #C6D0DC;
            transition: border-color .2s, background .2s;
        }

        .security-list li:hover {
            border-color: rgba(23, 230, 200, .25);
            background: #131C29;
        }

        .security-list li i {
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-body);
            border-top: 1px solid var(--border-subtle);
        }

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

        .accordion {
            --bs-accordion-bg: var(--bg-card);
            --bs-accordion-border-color: var(--border-subtle);
            --bs-accordion-border-radius: var(--radius-md);
            --bs-accordion-active-bg: var(--bg-card);
            --bs-accordion-active-color: var(--text-title);
            --bs-accordion-btn-focus-border-color: var(--primary);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(23,230,200,.15);
        }

        .accordion-item {
            margin-bottom: 12px;
            border: 1px solid var(--border-subtle) !important;
            border-radius: var(--radius-md) !important;
            overflow: hidden;
            background: var(--bg-card);
            transition: border-color .2s;
        }

        .accordion-item:hover {
            border-color: rgba(23, 230, 200, .2) !important;
        }

        .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            background: var(--bg-card);
            padding: 16px 20px;
            min-height: 52px;
            line-height: 1.4;
            box-shadow: none !important;
            transition: background .2s, color .2s;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--bg-card);
        }

        .accordion-button:focus {
            outline: 2px solid var(--primary);
            outline-offset: -1px;
            box-shadow: none;
        }

        .accordion-button::after {
            background-image: none;
            content: '+';
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform .15s ease, color .2s;
            width: 24px;
            height: 24px;
            font-family: var(--font-main);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
            background-image: none;
        }

        .accordion-body {
            padding: 4px 20px 18px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
            border-top: 1px solid var(--border-subtle);
            background: var(--bg-overlay);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-header);
            border-top: 1px solid var(--border-subtle);
            position: relative;
            padding: 72px 0;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            opacity: .6;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-title);
            margin: 0 0 12px;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--text-body);
            margin: 0 0 28px;
        }

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

        .cta-meta {
            margin-top: 14px;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-header);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 32px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
            max-width: 260px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #C6D0DC;
            margin-bottom: 14px;
        }

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

        .footer-links li {
            margin-bottom: 2px;
        }

        .footer-links a {
            display: inline-block;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 28px;
            transition: color .2s, padding-left .2s;
            position: relative;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 8px;
        }

        .footer-links a:hover::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 2px;
            height: 12px;
            background: var(--primary);
            border-radius: 2px;
        }

        .footer-contact {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0 0 4px;
            line-height: 1.5;
        }

        .footer-hours {
            font-size: 12px;
            color: #4A5565;
            margin: 6px 0 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #4A5565;
        }

        .footer-bottom span {
            margin: 0 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-header);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                gap: 16px;
                border-bottom: 1px solid var(--border-subtle);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: transform .3s ease, opacity .2s, visibility .2s;
                box-shadow: 0 16px 32px rgba(0,0,0,.3);
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }

            .nav-link {
                display: block;
                padding: 12px 4px;
                font-size: 15px;
                border-bottom: 1px solid var(--border-subtle);
            }

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

            .nav-link.active {
                border-left: 3px solid var(--primary);
                padding-left: 12px;
            }

            .btn-nav {
                margin-top: 8px;
                width: 100%;
            }

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

            .flow-steps {
                grid-template-columns: 1fr 1fr;
            }

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

        @media (max-width: 768px) {
            .section-block {
                padding: var(--sect-mobile) 0;
            }

            .section-head h2 {
                font-size: 24px;
                line-height: 1.3;
                padding-left: 18px;
            }

            .section-head h2::before {
                height: 20px;
            }

            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 30px;
                line-height: 1.3;
            }

            .hero-sub {
                font-size: 14px;
                margin-bottom: 22px;
            }

            .security-list {
                grid-template-columns: 1fr;
            }

            .faq-wrap {
                padding: 0 4px;
            }
        }

        @media (max-width: 576px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
            }

            .scenario-grid,
            .flow-steps {
                grid-template-columns: 1fr;
            }

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

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

            .section-head {
                flex-wrap: wrap;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .page-breadcrumb {
                font-size: 12px;
            }

            .security-wrap {
                gap: 24px;
            }
        }

        @media (max-width: 380px) {
            .page-hero h1 {
                font-size: 24px;
            }

            .brand span {
                font-size: 16px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --bg-body: #090D12;
            --bg-card: #101720;
            --bg-surface: #0D141C;
            --bg-header: #070B10;
            --primary: #17E6C8;
            --purple: #7C5CFF;
            --pink: #FF3C9E;
            --text-title: #F0F6FC;
            --text-body: #A9B6C8;
            --text-muted: #6F7C8F;
            --border-soft: rgba(255,255,255,.06);
            --border-strong: rgba(255,255,255,.08);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover { color: var(--primary); }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-header);
        }
        .site-header::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary) 12%, var(--purple) 50%, var(--pink) 88%, transparent);
            pointer-events: none;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            position: relative;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            text-decoration: none;
            letter-spacing: 0;
        }
        .brand:hover { color: #fff; }
        .brand-icon { flex-shrink: 0; }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 24px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-link {
            position: relative;
            display: inline-block;
            padding: 8px 0;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            text-decoration: none;
            transition: color .2s;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--pink));
            transform: translateX(-50%);
            transition: width .25s ease;
        }
        .nav-link:hover { color: #fff; }
        .nav-link:hover::after { width: 24px; }
        .nav-link.active {
            color: #fff;
            text-shadow: 0 0 16px rgba(23,230,200,.35);
        }
        .nav-link.active::after { width: 24px; }
        .btn-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            background: var(--primary);
            color: #06120F;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            white-space: nowrap;
            transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        .btn-nav:hover {
            background: var(--pink);
            color: #06120F;
            box-shadow: 0 0 18px rgba(23,230,200,.35);
            transform: translateY(-1px);
        }
        .btn-nav:active { transform: translateY(0); }
        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            padding: 0;
            background: transparent;
            border: 1px solid var(--border-strong);
            border-radius: 8px;
            cursor: pointer;
            transition: border-color .2s, background .2s;
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            background: rgba(23,230,200,.06);
        }
        .nav-toggle svg { transition: transform .2s ease; }
        .nav-toggle.active svg { transform: rotate(90deg); }

        /* ===== 页头 / 面包屑 ===== */
        .page-head {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-soft);
            padding: 40px 0 32px;
        }
        .breadcrumb-nav {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .breadcrumb-nav a {
            color: var(--text-body);
            text-decoration: none;
            transition: color .2s;
        }
        .breadcrumb-nav a:hover { color: var(--primary); }
        .breadcrumb-nav .sep {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .page-title {
            font-size: 36px;
            line-height: 44px;
            font-weight: 800;
            color: var(--text-title);
            margin: 0 0 14px;
            letter-spacing: 0;
        }
        .page-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .page-meta .dot { opacity: .5; }

        /* ===== 正文阅读区 ===== */
        .article-wrapper {
            max-width: 820px;
            margin: 0 auto;
            padding: 48px 24px 0;
        }
        .article-body {
            font-size: 15px;
            line-height: 26px;
            color: var(--text-body);
            word-wrap: break-word;
        }
        .article-body p { margin-bottom: 18px; }
        .article-body h2 {
            position: relative;
            padding-left: 18px;
            margin: 40px 0 16px;
            font-size: 22px;
            line-height: 30px;
            font-weight: 700;
            color: var(--text-title);
        }
        .article-body h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 3px;
            border-radius: 2px;
            background: linear-gradient(180deg, var(--primary), var(--pink));
        }
        .article-body h3 {
            font-size: 18px;
            line-height: 26px;
            font-weight: 700;
            color: var(--text-title);
            margin: 28px 0 12px;
        }
        .article-body h4 {
            font-size: 16px;
            line-height: 24px;
            font-weight: 700;
            color: var(--text-title);
            margin: 24px 0 10px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 22px;
        }
        .article-body li { margin-bottom: 6px; }
        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            background: var(--bg-card);
            border-left: 3px solid var(--primary);
            border-radius: 0 12px 12px 0;
            font-size: 14px;
            line-height: 24px;
            color: var(--text-body);
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            margin: 24px 0;
            border-radius: 12px;
            border: 1px solid var(--border-soft);
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover { color: var(--pink); }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border-strong);
            padding: 10px 12px;
        }
        .article-body table th {
            background: var(--bg-card);
            color: var(--text-title);
        }
        .article-body code {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 13px;
            color: var(--primary);
        }
        .article-body pre {
            background: #0B1119;
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            padding: 16px;
            overflow-x: auto;
        }
        .article-empty {
            text-align: center;
            padding: 72px 20px;
        }
        .article-empty p {
            font-size: 16px;
            color: var(--text-title);
            margin-bottom: 20px;
        }
        .article-empty a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 42px;
            padding: 0 24px;
            background: var(--primary);
            color: #06120F;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: background .2s, box-shadow .2s;
        }
        .article-empty a:hover {
            background: var(--pink);
            box-shadow: 0 0 18px rgba(23,230,200,.3);
            color: #06120F;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 56px 0 8px;
        }
        .section-title {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 30px;
            line-height: 38px;
            font-weight: 700;
            color: var(--text-title);
            margin: 0 0 26px;
        }
        .section-title::before {
            content: "";
            flex-shrink: 0;
            width: 3px;
            height: 24px;
            border-radius: 2px;
            background: linear-gradient(180deg, var(--primary), var(--pink));
        }
        .news-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            overflow: hidden;
            text-decoration: none;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(23,230,200,.28);
            box-shadow: 0 8px 24px rgba(23,230,200,.08);
            text-decoration: none;
        }
        .news-card:active { transform: translateY(-1px); }
        .cover-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-surface);
        }
        .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }
        .news-card:hover .cover-wrap img { transform: scale(1.04); }
        .news-card-body {
            padding: 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-title {
            font-size: 15px;
            line-height: 24px;
            font-weight: 600;
            color: var(--text-title);
            margin: 0 0 10px;
            transition: color .2s;
        }
        .news-card:hover .news-card-title { color: var(--primary); }
        .news-card-date {
            margin-top: auto;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== 返回按钮 ===== */
        .article-back {
            max-width: 820px;
            margin: 0 auto;
            padding: 32px 24px 48px;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 42px;
            padding: 0 22px;
            background: transparent;
            border: 1px solid var(--primary);
            border-radius: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            transition: background .2s, color .2s, box-shadow .2s;
        }
        .btn-back:hover {
            background: rgba(23,230,200,.08);
            color: var(--primary);
            box-shadow: 0 0 16px rgba(23,230,200,.18);
        }
        .btn-back:active {
            background: rgba(23,230,200,.14);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-header);
            border-top: 1px solid rgba(255,255,255,.06);
            padding: 48px 0 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-title);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 13px;
            line-height: 24px;
            color: var(--text-muted);
            margin: 0;
            max-width: 260px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li a {
            position: relative;
            display: inline-block;
            padding-left: 0;
            font-size: 13px;
            line-height: 28px;
            color: var(--text-muted);
            text-decoration: none;
            transition: color .2s, padding-left .2s;
        }
        .footer-links li a::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 2px;
            height: 0;
            border-radius: 1px;
            background: var(--primary);
            transition: height .2s;
        }
        .footer-links li a:hover {
            color: #fff;
            padding-left: 8px;
        }
        .footer-links li a:hover::before {
            height: 14px;
        }
        .footer-contact {
            font-size: 13px;
            line-height: 24px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .footer-hours {
            font-size: 12px;
            line-height: 18px;
            color: var(--text-muted);
            opacity: .7;
        }
        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-soft);
            font-size: 12px;
            color: #4A5565;
            text-align: center;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .nav-toggle { display: inline-flex; }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 8px 20px 20px;
                background: var(--bg-header);
                border-bottom: 1px solid var(--border-soft);
                box-shadow: 0 20px 32px rgba(0,0,0,.35);
            }
            .main-nav.open { display: flex; }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }
            .nav-link {
                position: relative;
                display: block;
                padding: 0 0 0 16px;
                font-size: 14px;
                line-height: 46px;
                border-bottom: 1px solid rgba(255,255,255,.04);
            }
            .nav-link::after { display: none; }
            .nav-link.active { text-shadow: none; }
            .nav-link.active::before {
                content: "";
                position: absolute;
                left: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 3px;
                height: 18px;
                border-radius: 2px;
                background: var(--primary);
            }
            .btn-nav {
                margin-top: 14px;
                width: 100%;
            }
        }
        @media (max-width: 767.98px) {
            .page-head { padding: 32px 0 24px; }
            .page-title { font-size: 26px; line-height: 34px; }
            .breadcrumb-nav { margin-bottom: 14px; }
            .article-wrapper { padding: 32px 16px 0; }
            .related-section { padding: 40px 0 8px; }
            .section-title { font-size: 22px; line-height: 30px; margin-bottom: 20px; }
            .article-back { padding: 24px 16px 40px; }
            .site-footer { padding: 36px 0 24px; }
        }
        @media (max-width: 575.98px) {
            .news-card-body { padding: 12px; }
            .news-card-title { font-size: 14px; line-height: 20px; }
            .news-card-date { font-size: 11px; }
            .btn-back { width: 100%; justify-content: center; }
        }