/* roulang page: index */
:root {
            --deep: #071B2C;
            --deep2: #0E2A3F;
            --wave: #2DD4BF;
            --scale: #A5F3FC;
            --bait: #FF7A59;
            --mist: #8BA7C1;
            --textlight: #E2F3FD;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: radial-gradient(1200px 800px at 15% -10%, #0E2A3F 0%, #071B2C 45%, #050F1A 100%);
            color: var(--textlight);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-x {
            max-width: 76rem;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1.25rem;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 212, 191, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 20px rgba(45, 212, 191, 0.10);
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--wave);
            color: #06251F;
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 0 24px rgba(45, 212, 191, 0.45);
            transition: all .3s ease;
            min-height: 44px;
            border: none;
            cursor: pointer;
        }
        .btn-glow:hover {
            background: #6EE7D7;
            box-shadow: 0 0 38px rgba(45, 212, 191, 0.70);
            transform: translateY(-2px);
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 18px rgba(45, 212, 191, 0.50);
        }
        .btn-glow:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.50);
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--textlight);
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            font-weight: 500;
            font-size: 0.95rem;
            min-height: 44px;
            transition: all .3s ease;
            background: rgba(255, 255, 255, 0.02);
        }
        .btn-ghost:hover {
            border-color: rgba(165, 243, 252, 0.60);
            color: var(--scale);
            background: rgba(165, 243, 252, 0.08);
            transform: translateY(-2px);
        }
        .btn-ghost:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.40);
            outline-offset: 3px;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0.40rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.90rem;
            color: rgba(255, 255, 255, 0.75);
            transition: all .3s ease;
            border: 1px solid transparent;
            min-height: 36px;
        }
        .nav-link:hover {
            color: var(--scale);
            background: rgba(165, 243, 252, 0.08);
        }
        .nav-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.12);
            border-color: rgba(45, 212, 191, 0.25);
        }
        .nav-link:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.40);
            outline-offset: 2px;
        }
        .mobile-nav-link {
            display: flex;
            align-items: center;
            min-height: 44px;
            padding: 0.60rem 1rem;
            border-radius: 0.75rem;
            color: rgba(255, 255, 255, 0.80);
            font-size: 0.95rem;
            transition: all .3s ease;
            border: 1px solid transparent;
        }
        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.10);
            border-color: rgba(45, 212, 191, 0.20);
        }
        .input-dark {
            width: 100%;
            background: rgba(5, 15, 26, 0.60);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 0.75rem;
            padding: 0.70rem 1rem;
            color: var(--textlight);
            transition: all .3s ease;
            min-height: 44px;
            font-size: 0.95rem;
        }
        .input-dark::placeholder {
            color: rgba(139, 167, 193, 0.70);
        }
        .input-dark:focus {
            outline: none;
            border-color: var(--wave);
            box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15), 0 0 16px rgba(45, 212, 191, 0.15);
        }
        .link-wave {
            color: var(--scale);
            transition: color .3s;
        }
        .link-wave:hover {
            color: var(--wave);
            text-decoration: underline;
        }
        .link-wave:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.40);
            outline-offset: 2px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.25);
            color: var(--scale);
            border-radius: 9999px;
            padding: 0.30rem 0.90rem;
            font-size: 0.80rem;
            letter-spacing: 0.05em;
            gap: 0.35rem;
        }
        .section-title {
            font-size: 2rem;
            line-height: 1.25;
            font-weight: 600;
            letter-spacing: -0.02em;
            margin-top: 0.75rem;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 3rem;
            }
        }
        .tab-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.55rem 1.20rem;
            border-radius: 9999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.04);
            color: var(--mist);
            font-size: 0.90rem;
            font-weight: 500;
            min-height: 44px;
            transition: all .3s ease;
            cursor: pointer;
        }
        .tab-btn:hover {
            color: var(--scale);
            border-color: rgba(165, 243, 252, 0.40);
        }
        .tab-btn.active {
            background: rgba(45, 212, 191, 0.15);
            border-color: rgba(45, 212, 191, 0.35);
            color: var(--wave);
            box-shadow: 0 0 16px rgba(45, 212, 191, 0.15);
        }
        .tab-btn:focus-visible {
            outline: 3px solid rgba(45, 212, 191, 0.40);
            outline-offset: 2px;
        }
        .tab-panel {
            display: none;
        }
        .tab-panel.active {
            display: block;
        }
        details.faq-item {
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1rem;
            background: rgba(255, 255, 255, 0.04);
            padding: 1rem 1.25rem;
            transition: all .3s ease;
        }
        details.faq-item:hover {
            border-color: rgba(45, 212, 191, 0.30);
        }
        details.faq-item[open] {
            border-color: rgba(45, 212, 191, 0.50);
            box-shadow: 0 0 20px rgba(45, 212, 191, 0.08);
        }
        details.faq-item summary {
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            min-height: 44px;
            color: var(--textlight);
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--wave);
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        details.faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        details.faq-item .faq-answer {
            color: var(--mist);
            font-size: 0.95rem;
            line-height: 1.75;
            padding-top: 0.75rem;
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .scrollbar-thin::-webkit-scrollbar {
            height: 6px;
        }
        .scrollbar-thin::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.06);
            border-radius: 3px;
        }
        .scrollbar-thin::-webkit-scrollbar-thumb {
            background: rgba(45, 212, 191, 0.40);
            border-radius: 3px;
        }
        .scrollbar-thin {
            scrollbar-width: thin;
            scrollbar-color: rgba(45, 212, 191, 0.40) rgba(255, 255, 255, 0.06);
        }
        .hero-background {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .pricing-hot {
            border-color: rgba(45, 212, 191, 0.55);
            box-shadow: 0 0 36px rgba(45, 212, 191, 0.12), 0 20px 50px rgba(0, 0, 0, 0.40);
        }
        .footer-bg {
            background: #050F1A;
        }
        .fish-icon {
            width: 22px;
            height: 18px;
            display: block;
        }
        .section-anchor {
            scroll-margin-top: 100px;
        }
        @media (max-width: 767px) {
            .nav-desktop {
                display: none;
            }
            .mobile-panel {
                display: block;
            }
            .container-x {
                padding: 0 1rem;
            }
        }
        @media (min-width: 768px) {
            .mobile-panel {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #071B2C;
            --bg-mid: #0E2A3F;
            --bg-darker: #050F1A;
            --wave: #2DD4BF;
            --wave-light: #6EE7D7;
            --scale: #A5F3FC;
            --bait: #FF7A59;
            --mist: #8BA7C1;
            --bright: #E2F3FD;
            --border-glass: rgba(255,255,255,0.1);
            --bg-glass: rgba(255,255,255,0.06);
            --shadow-glass: 0 8px 32px rgba(0,0,0,0.35);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
            background: radial-gradient(ellipse at top center, var(--bg-mid), var(--bg-deep) 75%);
            color: var(--bright);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-x {
                padding: 0 16px;
            }
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--mist);
            transition: all 0.3s ease;
            line-height: 1.4;
        }
        .nav-link:hover {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.08);
        }
        .nav-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.12);
            box-shadow: inset 0 0 0 1px rgba(45, 212, 191, 0.2);
        }
        .nav-link:focus-visible,
        .btn-glow:focus-visible,
        .btn-ghost:focus-visible,
        .mobile-link:focus-visible,
        .back-top:focus-visible {
            outline: 2px solid var(--wave);
            outline-offset: 3px;
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 10px 28px;
            border-radius: 999px;
            background: var(--wave);
            color: #06251F;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.02em;
            box-shadow: 0 0 24px rgba(45, 212, 191, 0.4);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-glow:hover {
            background: var(--wave-light);
            box-shadow: 0 0 36px rgba(45, 212, 191, 0.6);
            transform: translateY(-2px);
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(45, 212, 191, 0.3);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 10px 26px;
            border-radius: 999px;
            border: 1px solid rgba(45, 212, 191, 0.4);
            color: var(--scale);
            font-size: 14px;
            font-weight: 500;
            background: transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            background: rgba(45, 212, 191, 0.1);
            border-color: var(--wave);
            color: var(--wave);
        }
        .mobile-link {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            border-radius: 14px;
            font-size: 15px;
            color: var(--mist);
            transition: all 0.25s ease;
            font-weight: 500;
            min-height: 44px;
        }
        .mobile-link:hover,
        .mobile-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.1);
        }
        .fish-icon {
            animation: fishFloat 4s ease-in-out infinite;
        }
        @keyframes fishFloat {
            0%, 100% {
                transform: translateX(0);
            }
            50% {
                transform: translateX(3px) translateY(-2px);
            }
        }
        .article-body {
            font-size: 17px;
            line-height: 2.05;
            color: rgba(226, 243, 253, 0.88);
            word-break: break-word;
        }
        .article-body > *:first-child {
            margin-top: 0;
        }
        .article-body h1,
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--bright);
            font-weight: 700;
            line-height: 1.4;
            margin: 2.2em 0 0.8em;
        }
        .article-body h1 {
            font-size: 32px;
            border-bottom: 1px solid rgba(45, 212, 191, 0.25);
            padding-bottom: 16px;
        }
        .article-body h2 {
            font-size: 26px;
            border-bottom: 1px solid rgba(45, 212, 191, 0.18);
            padding-bottom: 12px;
        }
        .article-body h3 {
            font-size: 22px;
        }
        .article-body h4 {
            font-size: 18px;
            color: var(--scale);
        }
        .article-body p {
            margin-bottom: 26px;
        }
        .article-body a {
            color: var(--wave);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(45, 212, 191, 0.4);
        }
        .article-body a:hover {
            color: var(--scale);
            text-decoration-color: var(--scale);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 28px 28px;
            color: rgba(226, 243, 253, 0.8);
        }
        .article-body li {
            margin-bottom: 10px;
        }
        .article-body ul li::marker {
            color: var(--wave);
        }
        .article-body ol li::marker {
            color: var(--wave);
            font-weight: 600;
        }
        .article-body blockquote {
            border-left: 4px solid var(--wave);
            background: rgba(45, 212, 191, 0.07);
            padding: 18px 24px;
            border-radius: 0 14px 14px 0;
            margin: 28px 0;
            color: var(--mist);
            font-style: normal;
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body img {
            border-radius: 16px;
            margin: 32px 0;
            box-shadow: var(--shadow-glass);
            border: 1px solid rgba(255,255,255,0.06);
        }
        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.88em;
            color: var(--scale);
            font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
        }
        .article-body pre {
            background: rgba(5, 15, 26, 0.85);
            border: 1px solid rgba(45, 212, 191, 0.15);
            border-radius: 14px;
            padding: 22px 24px;
            overflow-x: auto;
            margin: 28px 0;
            box-shadow: var(--shadow-glass);
        }
        .article-body pre code {
            background: transparent;
            border: none;
            padding: 0;
            color: var(--scale);
            font-size: 14px;
            line-height: 1.8;
        }
        .article-body table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 12px;
            margin: 28px 0;
            font-size: 15px;
        }
        .article-body th {
            background: rgba(45, 212, 191, 0.1);
            color: var(--scale);
            font-weight: 600;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            color: rgba(226, 243, 253, 0.8);
        }
        .article-body tr:last-child td {
            border-bottom: none;
        }
        .article-body hr {
            border: none;
            border-top: 1px solid rgba(255,255,255,0.1);
            margin: 40px 0;
        }
        .article-body iframe {
            max-width: 100%;
            border-radius: 14px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .recommend-card {
            display: block;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(12px);
            transition: all 0.3s ease;
        }
        .recommend-card:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 212, 191, 0.3);
            box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 20px rgba(45,212,191,0.06);
        }
        .recommend-card:hover .recommend-title {
            color: var(--wave);
        }
        .recommend-title {
            transition: color 0.3s ease;
        }
        .back-top {
            position: fixed;
            right: 28px;
            bottom: 32px;
            z-index: 99;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(45, 212, 191, 0.15);
            border: 1px solid rgba(45, 212, 191, 0.4);
            color: var(--wave);
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .back-top:hover {
            background: rgba(45, 212, 191, 0.25);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(45, 212, 191, 0.15);
        }
        .footer-bg {
            background: var(--bg-darker);
            position: relative;
        }
        .footer-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45,212,191,0.4), transparent);
        }
        .cta-wave-bg {
            position: relative;
            overflow: hidden;
        }
        .cta-wave-bg::before {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 0;
            right: 0;
            height: 80px;
            background: radial-gradient(ellipse at bottom center, rgba(45,212,191,0.15), transparent 70%);
            pointer-events: none;
        }
        .glass-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-glass);
        }
        .tag-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.25);
            color: var(--scale);
        }
        .abstract-box {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-left: 3px solid var(--wave);
            border-radius: 0 14px 14px 0;
            padding: 20px 28px;
            font-size: 15px;
            color: var(--mist);
            line-height: 1.9;
        }
        .breadcrumb-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--mist);
            flex-wrap: wrap;
        }
        .breadcrumb-bar a:hover {
            color: var(--wave);
        }
        .breadcrumb-sep {
            color: rgba(139,167,193,0.5);
        }
        @media (max-width: 768px) {
            .article-body {
                font-size: 16px;
                line-height: 1.95;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 19px;
            }
        }
        @media (max-width: 480px) {
            .back-top {
                right: 16px;
                bottom: 20px;
                width: 44px;
                height: 44px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #071B2C;
            --bg-mid: #0E2A3F;
            --wave: #2DD4BF;
            --wave-light: #6EE7D7;
            --scale: #A5F3FC;
            --mist: #8BA7C1;
            --ink: #E2F3FD;
            --bait: #FF7A59;
            --border-glass: rgba(255, 255, 255, 0.1);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --radius-xl: 24px;
            --radius-lg: 16px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(45, 212, 191, 0.45);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
            background: radial-gradient(ellipse at 20% 20%, #0E2A3F 0%, #071B2C 55%, #050F1A 100%);
            color: var(--ink);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        a:focus-visible,
        button:focus-visible,
        .btn-glow:focus-visible,
        .btn-ghost:focus-visible,
        .nav-link:focus-visible {
            outline: 2px solid var(--wave);
            outline-offset: 3px;
            border-radius: 8px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
        }

        /* ---------- 导航 ---------- */
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 44px;
            padding: 0 14px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(226, 243, 253, 0.72);
            border-radius: 999px;
            transition: color 0.25s ease, background 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--scale);
            background: rgba(165, 243, 252, 0.08);
        }
        .nav-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.12);
            font-weight: 600;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 22px;
            border-radius: 999px;
            border: 1px solid rgba(45, 212, 191, 0.35);
            color: var(--wave);
            font-size: 14px;
            font-weight: 600;
            background: rgba(45, 212, 191, 0.06);
            transition: all 0.3s ease;
            min-width: 44px;
        }
        .btn-ghost:hover {
            border-color: var(--wave);
            background: rgba(45, 212, 191, 0.12);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: 999px;
            background: var(--wave);
            color: #06251F;
            font-size: 14px;
            font-weight: 700;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-glow:hover {
            background: var(--wave-light);
            box-shadow: 0 0 34px rgba(110, 231, 215, 0.65);
            transform: translateY(-2px);
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 18px rgba(45, 212, 191, 0.4);
        }
        .btn-lg {
            height: 54px;
            padding: 0 40px;
            font-size: 16px;
            border-radius: 999px;
        }
        .mobile-panel {
            position: absolute;
            left: 16px;
            right: 16px;
            top: 72px;
            z-index: 100;
            box-shadow: var(--shadow-card);
        }
        .mobile-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 15px;
            color: rgba(226, 243, 253, 0.85);
            transition: background 0.2s ease;
        }
        .mobile-panel a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--scale);
        }
        .mobile-panel a.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.1);
        }

        /* ---------- 玻璃卡片 ---------- */
        .glass-card {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            transition: transform 0.35s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(45, 212, 191, 0.3);
            transform: translateY(-4px);
            box-shadow: 0 14px 44px rgba(0, 0, 0, 0.45);
        }

        /* ---------- Hero ---------- */
        .hero-wrap {
            background: #071B2C;
            position: relative;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.45;
        }
        .hero-image-wrap {
            position: relative;
        }
        .hero-image-wrap img {
            height: 300px;
            width: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .status-card {
            background: rgba(7, 27, 44, 0.85);
            border: 1px solid rgba(45, 212, 191, 0.3);
            border-radius: 14px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }
        .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--wave);
            animation: pulse 1.8s ease-in-out infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.5);
            }
            50% {
                opacity: 0.7;
                box-shadow: 0 0 0 6px rgba(45, 212, 191, 0);
            }
        }
        .hero-stat {
            border-left: 1px solid rgba(255, 255, 255, 0.12);
            padding-left: 14px;
        }
        .hero-stat:first-child {
            border-left: none;
            padding-left: 0;
        }
        .hero-stat b {
            display: block;
            font-size: 20px;
            color: var(--scale);
            line-height: 1.3;
        }
        .hero-stat span {
            font-size: 12px;
            color: var(--mist);
        }

        /* ---------- 面包屑 ---------- */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--mist);
        }
        .breadcrumb a {
            color: var(--mist);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--wave);
        }
        .breadcrumb .sep {
            color: rgba(139, 167, 193, 0.5);
        }
        .breadcrumb .current {
            color: var(--scale);
        }

        /* ---------- 分区标题 ---------- */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--wave);
            background: rgba(45, 212, 191, 0.1);
            border: 1px solid rgba(45, 212, 191, 0.2);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-head h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
            color: #fff;
        }
        .section-head p {
            color: var(--mist);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ---------- 登录步骤 ---------- */
        .steps-section {
            position: relative;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
            max-width: 960px;
            margin: 0 auto;
        }
        .step-item {
            padding: 32px 28px;
            position: relative;
            text-align: center;
            border-radius: var(--radius-xl);
        }
        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            border-radius: 18px;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.35);
            color: var(--scale);
            font-size: 20px;
            font-weight: 700;
            font-style: italic;
        }
        .step-item h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .step-item p {
            color: var(--mist);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            margin: 0 auto;
        }
        .step-arrow {
            text-align: center;
            color: rgba(45, 212, 191, 0.5);
            font-size: 22px;
            line-height: 1;
        }

        /* ---------- 服务要点卡 ---------- */
        .feature-card {
            padding: 32px 28px;
            border-radius: var(--radius-xl);
            position: relative;
            overflow: hidden;
        }
        .feature-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.2);
            margin-bottom: 20px;
            color: var(--wave);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--mist);
            line-height: 1.8;
        }

        /* ---------- 安全区块 ---------- */
        .security-list {
            margin-top: 24px;
            display: grid;
            gap: 18px;
        }
        .security-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            font-size: 15px;
            color: rgba(226, 243, 253, 0.86);
            line-height: 1.7;
            transition: border-color 0.25s ease, background 0.25s ease;
        }
        .security-list li:hover {
            border-color: rgba(45, 212, 191, 0.35);
            background: rgba(45, 212, 191, 0.06);
        }
        .security-list .icon-wrap {
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ---------- 细分目录 ---------- */
        .topic-list {
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(14px);
        }
        .topic-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.25s ease, padding-left 0.3s ease;
        }
        .topic-item:last-child {
            border-bottom: none;
        }
        .topic-item:hover {
            background: rgba(45, 212, 191, 0.07);
            padding-left: 36px;
        }
        .topic-item .t-main {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .topic-item .t-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--wave);
            background: rgba(45, 212, 191, 0.1);
            border: 1px solid rgba(45, 212, 191, 0.2);
            border-radius: 8px;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .topic-item .t-title {
            font-size: 16px;
            font-weight: 500;
            color: rgba(226, 243, 253, 0.9);
        }
        .topic-item .t-arrow {
            color: var(--mist);
            font-size: 14px;
            transition: color 0.25s ease, transform 0.25s ease;
        }
        .topic-item:hover .t-arrow {
            color: var(--wave);
            transform: translateX(4px);
        }

        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item[open] {
            border-color: rgba(45, 212, 191, 0.4);
            box-shadow: 0 0 20px rgba(45, 212, 191, 0.08);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            list-style: none;
            transition: color 0.25s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--scale);
        }
        .faq-item summary .faq-icon {
            color: var(--wave);
            font-size: 18px;
            font-weight: 300;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(45, 212, 191, 0.1);
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 26px 24px;
            color: var(--mist);
            font-size: 15px;
            line-height: 1.85;
        }

        /* ---------- 互链卡片 ---------- */
        .related-card {
            padding: 30px 28px;
            border-radius: var(--radius-xl);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .related-card .thumb {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: 14px;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .related-card p {
            font-size: 14px;
            color: var(--mist);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .related-card .go-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--wave);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s ease;
        }
        .related-card .go-link:hover {
            gap: 10px;
            color: var(--scale);
        }

        /* ---------- CTA ---------- */
        .cta-box {
            position: relative;
            border-radius: 32px;
            padding: 70px 30px;
            text-align: center;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(7, 27, 44, 0.7);
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
        }
        .cta-box .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
        }
        .cta-box .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .cta-box p {
            color: var(--mist);
            font-size: 16px;
            margin-bottom: 30px;
        }

        /* ---------- 页脚 ---------- */
        .footer-bg {
            background: #050F1A;
        }
        .footer-bg a {
            transition: color 0.2s ease;
        }
        .footer-bg a:hover {
            color: var(--wave) !important;
        }

        /* ---------- 响应式 ---------- */
        @media (min-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr auto 1fr auto 1fr;
                align-items: center;
                gap: 0;
            }
            .step-arrow {
                padding: 0 18px;
                font-size: 24px;
                color: rgba(45, 212, 191, 0.4);
            }
            .section-head h2 {
                font-size: 40px;
            }
        }
        @media (max-width: 767px) {
            .container-x {
                padding: 0 18px;
            }
            .hero-image-wrap img {
                height: 220px;
            }
            .cta-box {
                padding: 50px 22px;
                border-radius: 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .topic-item {
                padding: 18px 20px;
            }
            .topic-item:hover {
                padding-left: 24px;
            }
        }
        @media (max-width: 520px) {
            .section-head h2 {
                font-size: 25px;
            }
            .step-item {
                padding: 24px 20px;
            }
            .feature-card {
                padding: 26px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --abyss: #071B2C;
            --deep: #0E2A3F;
            --wave: #2DD4BF;
            --wave-dark: #14B8A6;
            --scale: #A5F3FC;
            --bait: #FF7A59;
            --mist: #8BA7C1;
            --foam: #E2F3FD;
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: radial-gradient(1100px 700px at 20% -10%, #0E2A3F 0%, #071B2C 55%, #050F1A 100%);
            background-attachment: fixed;
            min-height: 100vh;
            color: var(--foam);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--wave);
            outline-offset: 3px;
            border-radius: 10px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container-x {
            max-width: 72rem;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .section-pad {
            padding: 76px 0;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 52px 0;
            }
        }

        .section-title {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.75rem;
            font-weight: 600;
            line-height: 1.3;
            letter-spacing: -0.02em;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.45rem;
            }
        }
        .section-sub {
            color: var(--mist);
            font-size: 1rem;
            line-height: 1.8;
            margin-top: .6rem;
            max-width: 620px;
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--wave);
            color: #06251F;
            font-weight: 600;
            padding: 0.75rem 1.6rem;
            border-radius: 999px;
            box-shadow: 0 0 24px rgba(45, 212, 191, 0.45);
            transition: all .28s ease;
            font-size: .95rem;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-glow:hover {
            background: #6EE7D7;
            box-shadow: 0 0 38px rgba(45, 212, 191, 0.65);
            transform: translateY(-2px);
        }
        .btn-glow:active {
            transform: translateY(0);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: transparent;
            color: var(--scale);
            font-weight: 500;
            padding: 0.65rem 1.4rem;
            border-radius: 999px;
            border: 1px solid rgba(45, 212, 191, 0.4);
            transition: all .28s ease;
            font-size: .95rem;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            background: rgba(45, 212, 191, 0.12);
            border-color: rgba(45, 212, 191, 0.7);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }

        .nav-link {
            display: inline-block;
            padding: 0.45rem 0.95rem;
            border-radius: 999px;
            color: var(--mist);
            font-size: .9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all .25s ease;
        }
        .nav-link:hover {
            color: var(--scale);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--wave);
            background: rgba(45, 212, 191, 0.12);
            font-weight: 600;
        }

        .mobile-link {
            display: block;
            padding: 0.75rem 1rem;
            border-radius: 1rem;
            color: var(--mist);
            font-size: .95rem;
            font-weight: 500;
            transition: all .25s ease;
        }
        .mobile-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--scale);
        }
        .mobile-link.active {
            background: rgba(45, 212, 191, 0.12);
            color: var(--wave);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            padding: .35rem .9rem;
            border-radius: 999px;
            border: 1px solid rgba(45, 212, 191, .35);
            background: rgba(45, 212, 191, .1);
            color: var(--scale);
            font-size: .8rem;
            font-weight: 500;
            letter-spacing: .04em;
        }

        .fish-icon {
            animation: fish-swim 4s ease-in-out infinite;
        }
        @keyframes fish-swim {
            0%,
            100% {
                transform: translateY(0) rotate(-2deg);
            }
            50% {
                transform: translateY(-3px) rotate(2deg);
            }
        }

        .footer-bg {
            background: #050F1A;
        }

        .hero-zone {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }
        .hero-zone::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 27, 44, 0.9) 0%, rgba(7, 27, 44, 0.72) 45%, rgba(7, 27, 44, 0.94) 100%);
        }
        .hero-zone::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, #071B2C);
            pointer-events: none;
        }

        .hero-card {
            background: rgba(6, 18, 31, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-radius: 1.5rem;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1.25rem;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 212, 191, 0.35) !important;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(45, 212, 191, 0.12) !important;
        }

        .icon-circle {
            width: 44px;
            height: 44px;
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.3);
            color: var(--scale);
            margin-bottom: 1rem;
        }

        .process-step {
            display: flex;
            gap: 1rem;
            padding: 1.1rem 1.2rem;
            border-radius: 1.1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color .3s ease, background .3s ease;
        }
        .process-step:hover {
            border-color: rgba(45, 212, 191, 0.3);
            background: rgba(255, 255, 255, 0.06);
        }

        .list-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.3rem;
            border-radius: 1.1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all .28s ease;
        }
        .list-row:hover {
            border-color: rgba(45, 212, 191, 0.4);
            background: rgba(45, 212, 191, 0.06);
            transform: translateX(4px);
        }

        details.faq-item {
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1.1rem;
            background: rgba(255, 255, 255, 0.04);
            padding: 0 1.25rem;
            transition: border-color .3s ease, background .3s ease;
        }
        details.faq-item[open] {
            border-color: rgba(45, 212, 191, 0.5);
            background: rgba(255, 255, 255, 0.055);
        }
        details.faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 0;
            font-weight: 600;
            color: var(--foam);
            cursor: pointer;
            min-height: 44px;
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary::after {
            content: '+';
            color: var(--wave);
            font-size: 1.5rem;
            font-weight: 400;
            line-height: 1;
            transition: transform .3s ease;
        }
        details.faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        details.faq-item .faq-answer {
            padding-bottom: 1.2rem;
            color: var(--mist);
            font-size: .95rem;
            line-height: 1.85;
        }

        .cta-band {
            background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(14, 42, 63, 0.7)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(45, 212, 191, 0.22);
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 27, 44, 0.75), rgba(5, 15, 26, 0.85));
        }

        .wave-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.45), transparent);
            border: none;
        }

        .text-glow {
            text-shadow: 0 0 30px rgba(45, 212, 191, 0.25);
        }

        ::selection {
            background: rgba(45, 212, 191, 0.3);
            color: #fff;
        }

        @media (max-width: 767px) {
            .hero-zone .hero-flex {
                flex-direction: column;
            }
            .hero-card {
                margin-top: 2rem;
            }
        }

/* roulang page: category2 */
:root {
            --abyss: #071B2C;
            --deep: #0E2A3F;
            --wave: #2DD4BF;
            --lagoon: #14B8A6;
            --scale: #A5F3FC;
            --bait: #FF7A59;
            --mist: #8BA7C1;
            --snow: #E2F3FD;
            --radius: 1rem;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
            background: radial-gradient(circle at 20% 0%, #0E2A3F 0%, #071B2C 55%, #050F1A 100%);
            color: #E2F3FD;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container-x {
            max-width: 76rem;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--wave);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .fish-icon {
            width: 24px;
            height: 20px;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border-radius: 1.25rem;
            box-shadow: var(--shadow-card);
        }

        .card-hover {
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            border-color: rgba(45, 212, 191, 0.35);
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.45);
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            height: 2.75rem;
            padding: 0 1rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            color: #8BA7C1;
            white-space: nowrap;
            transition: color 0.2s, background 0.2s;
        }

        .nav-link:hover {
            color: #A5F3FC;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #2DD4BF;
            background: rgba(45, 212, 191, 0.12);
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            height: 2.75rem;
            padding: 0 1.5rem;
            border-radius: 9999px;
            background: #2DD4BF;
            color: #06251F;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 24px rgba(45, 212, 191, 0.45);
            transition: all 0.2s;
        }

        .btn-glow:hover {
            background: #6EE7D7;
            transform: translateY(-2px);
            box-shadow: 0 4px 36px rgba(45, 212, 191, 0.6);
        }

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

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            height: 2.75rem;
            padding: 0 1.5rem;
            border-radius: 9999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #E2F3FD;
            font-weight: 500;
            font-size: 0.9rem;
            background: rgba(255, 255, 255, 0.05);
            transition: all 0.2s;
        }

        .btn-ghost:hover {
            border-color: #2DD4BF;
            color: #2DD4BF;
            background: rgba(45, 212, 191, 0.08);
        }

        .btn-solid {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            height: 3rem;
            padding: 0 2rem;
            border-radius: 9999px;
            background: #14B8A6;
            color: #06251F;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(45, 212, 191, 0.5);
            transition: all 0.2s;
        }

        .btn-solid:hover {
            background: #2DD4BF;
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(45, 212, 191, 0.25);
        }

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

        .mobile-panel {
            box-shadow: var(--shadow-card);
        }

        .mobile-panel .nav-link {
            display: flex;
            width: 100%;
            height: auto;
            padding: 0.75rem 1rem;
            border-radius: 1rem;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            background: rgba(45, 212, 191, 0.1);
            border: 1px solid rgba(45, 212, 191, 0.3);
            color: #A5F3FC;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.05em;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #8BA7C1;
        }

        .breadcrumb a:hover {
            color: #2DD4BF;
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }

        .hero-overlay {
            background: linear-gradient(180deg, rgba(7, 27, 44, 0.82) 0%, rgba(7, 27, 44, 0.72) 40%, #071B2C 100%);
        }

        .feature-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: padding 0.2s;
        }

        .feature-row:hover {
            padding-left: 0.5rem;
        }

        .feature-row .num {
            color: var(--wave);
            font-family: ui-monospace, monospace;
            font-size: 0.875rem;
        }

        .step-card {
            padding: 1.4rem 1.6rem;
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            transition: border-color 0.2s, background 0.2s;
        }

        .step-card:hover {
            border-color: rgba(45, 212, 191, 0.3);
            background: rgba(255, 255, 255, 0.07);
        }

        .step-dot {
            width: 2.4rem;
            height: 2.4rem;
            border-radius: 50%;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.3);
            color: #2DD4BF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .img-frame {
            border-radius: 1.25rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
            overflow: hidden;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1rem;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding: 1.1rem 1.25rem;
            font-weight: 500;
            color: #E2F3FD;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .icon {
            flex-shrink: 0;
            width: 1.8rem;
            height: 1.8rem;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #A5F3FC;
            transition: transform 0.3s, border-color 0.3s;
        }

        .faq-item[open] {
            border-color: rgba(45, 212, 191, 0.4);
            box-shadow: 0 0 24px rgba(45, 212, 191, 0.08);
        }

        .faq-item[open] summary .icon {
            transform: rotate(45deg);
            border-color: #2DD4BF;
        }

        .faq-item p {
            padding: 0 1.25rem 1.1rem;
            color: #8BA7C1;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .link-card {
            display: block;
            padding: 1.25rem;
            border-radius: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.04);
            transition: all 0.2s;
        }

        .link-card:hover {
            border-color: rgba(45, 212, 191, 0.4);
            background: rgba(45, 212, 191, 0.06);
            transform: translateY(-2px);
        }

        .link-card p {
            margin-top: 0.35rem;
            font-size: 0.85rem;
            color: #8BA7C1;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: auto -10% -40% -10%;
            height: 60%;
            background: radial-gradient(ellipse at 50% 100%, rgba(45, 212, 191, 0.18), transparent 60%);
            pointer-events: none;
        }

        .footer-bg {
            background: #050F1A;
        }

        .footer-bg ul li a {
            display: inline-flex;
            align-items: center;
            min-height: 28px;
        }

        @media (max-width: 640px) {
            .container-x {
                padding: 0 1rem;
            }

            .feature-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.8rem;
            }

            .cta-banner {
                padding: 2.5rem 1.25rem;
            }
        }