/* roulang page: index */
:root {
            --bg0: #0B0E11;
            --bg1: #11161C;
            --bg2: #192128;
            --line: rgba(238, 244, 250, 0.09);
            --line-strong: rgba(238, 244, 250, 0.16);
            --text-main: #EDF2F7;
            --text-sub: #A3AEB8;
            --neon: #00DFA8;
            --neon-bright: #66F0C8;
            --amber: #F0B35B;
            --danger: #F2657D;
            --radius-card: 16px;
            --radius-panel: 20px;
            --shadow-card: 0 20px 60px -40px rgba(0, 0, 0, .8);
            --ease: .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg0);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: clamp(18px, 4vw, 48px);
            padding-right: clamp(18px, 4vw, 48px);
        }

        .serif {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            height: 68px;
            background: rgba(11, 14, 17, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            background-clip: padding-box;
        }

        .site-header::after {
            content: "";
            display: block;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--neon), transparent);
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            opacity: 0.7;
        }

        .header-inner {
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .logo {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--neon);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--neon);
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 223, 168, .25);
            background: rgba(0, 223, 168, .04);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            position: relative;
            padding: 4px 0;
            transition: color .25s;
        }

        .nav-links a:hover {
            color: var(--text-main);
        }

        .nav-links li.active a {
            color: var(--neon);
        }

        .nav-links li.active a::after {
            content: "";
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--neon);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(0, 223, 168, .8);
        }

        .nav-cta {
            padding: 8px 22px;
            border-radius: 999px;
            background: var(--neon);
            color: #0B0E11;
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .3s;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--neon-bright);
            box-shadow: 0 0 24px rgba(0, 223, 168, .35);
            transform: translateY(-1px);
        }

        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            z-index: 80;
        }
        .burger span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all .3s;
        }
        .burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .burger.open span:nth-child(2) {
            opacity: 0;
        }
        .burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            position: fixed;
            inset: 0;
            background: rgba(11, 14, 17, .98);
            backdrop-filter: blur(10px);
            z-index: 70;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: all .4s;
        }

        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-main);
            font-family: "Noto Serif SC", serif;
        }

        .mobile-menu a.active {
            color: var(--neon);
        }

        /* Section*/
        .section {
            padding: 112px 0;
            position: relative;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 48px;
            gap: 20px;
            flex-wrap: wrap;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: var(--neon);
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(0, 223, 168, .06);
            border: 1px solid rgba(0, 223, 168, .22);
        }

        .section-title {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            font-size: clamp(26px, 3.8vw, 44px);
            line-height: 1.25;
            color: var(--text-main);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-top: 14px;
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 620px;
            line-height: 1.8;
            margin-top: 12px;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: clamp(90px, 12vw, 160px) 0;
            overflow: hidden;
            background: var(--bg0);
            border-bottom: 1px solid var(--line);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            filter: brightness(.35);
            transform: scale(1.05);
            z-index: 1;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 17, .97) 0%, rgba(11, 14, 17, .72) 45%, rgba(11, 14, 17, .45) 100%);
            z-index: 2;
        }

        .hero-inner {
            position: relative;
            z-index: 3;
            max-width: 780px;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .18em;
            color: var(--neon);
            padding: 8px 18px;
            border: 1px solid rgba(0, 223, 168, .25);
            border-radius: 999px;
            background: rgba(0, 223, 168, .04);
            text-transform: uppercase;
            animation: fadeUp .6s ease both;
        }

        .hero h1 {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            font-size: clamp(36px, 6.8vw, 76px);
            line-height: 1.14;
            letter-spacing: -0.02em;
            font-weight: 700;
            color: var(--text-main);
            margin: 28px 0 22px;
            animation: fadeUp .7s .15s ease both;
        }

        .hero h2 {
            font-size: 17px;
            line-height: 1.7;
            color: var(--text-sub);
            font-weight: 400;
            max-width: 600px;
            margin-bottom: 30px;
            animation: fadeUp .7s .28s ease both;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            animation: fadeUp .7s .4s ease both;
        }

        .btn-primary-orge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 30px;
            background: var(--neon);
            color: #0b0e11;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            transition: all .3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 0 rgba(0,0,0,0);
        }

        .btn-primary-orge:hover {
            background: var(--neon-bright);
            box-shadow: 0 4px 30px rgba(0,223,168,.3);
            transform: translateY(-2px);
        }

        .btn-ghost-orge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border: 1px solid var(--line-strong);
            color: var(--text-main);
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            background: transparent;
            transition: all .3s;
            cursor: pointer;
            backdrop-filter: blur(4px);
        }

        .btn-ghost-orge:hover {
            border-color: rgba(0,223,168,.55);
            color: var(--neon);
            box-shadow: 0 0 20px rgba(0,223,168,.06);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(12px);
            }
            to {
                opacity: 1;
                transform: none;
            }
        }

        /* Directory / 合集目录 */
        .directory {
            background: var(--bg0);
            position: relative;
        }

        .directory-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .dir-card {
            grid-column: span 6;
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: var(--radius-panel);
            padding: 34px 34px 30px;
            transition: all .35s;
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
            overflow: hidden;
        }

        .dir-card:first-child {
            grid-column: span 12;
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 32px;
            padding: 44px 46px;
        }

        .dir-card:first-child .card-media {
            display: block;
            border-radius: 12px;
            overflow: hidden;
            height: 260px;
        }

        .dir-card:not(:first-child) .card-media {
            display: none;
        }

        .dir-card:hover {
            border-color: rgba(0,223,168,.45);
            transform: translateY(-3px);
            box-shadow: 0 24px 70px -42px rgba(0,0,0,.9);
        }

        .dir-card .dir-no {
            font-family: "Noto Serif SC", serif;
            font-size: 34px;
            font-weight: 700;
            line-height: 1;
            color: rgba(0,223,168,.55);
            letter-spacing: -0.02em;
            display: block;
        }

        .dir-card h3 {
            font-family: "Noto Serif SC", serif;
            font-size: 21px;
            color: var(--text-main);
            font-weight: 700;
        }

        .dir-card p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 4px;
        }

        .dir-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            flex-wrap: wrap;
            gap: 14px;
        }

        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--neon);
            transition: gap .3s;
        }

        .dir-card:hover .link-arrow,
        .link-arrow:hover {
            gap: 12px;
        }

        .media-placeholder {
            background: linear-gradient(135deg, #1c252e, #273342);
            position: relative;
            overflow: hidden;
            width: 100%;
            height: 100%;
            min-height: 260px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .media-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: all .6s ease;
        }

        .dir-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== CMS动态区样式 ===== */
        .cms-section {
            background: var(--bg1);
        }

        .cms-feature {
            background: var(--bg0);
            border: 1px solid var(--line);
            border-radius: var(--radius-panel);
            overflow: hidden;
            margin-bottom: 26px;
            transition: all .35s;
        }

        .cms-feature:hover {
            border-color: rgba(0,223,168,.4);
        }

        .cms-feature-inner {
            display: grid;
            grid-template-columns: 1.25fr 1fr;
        }

        .cms-feature-info {
            padding: 38px 40px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cms-feature-info h3 {
            font-family: "Noto Serif SC", serif;
            font-size: 26px;
            line-height: 1.4;
            color: var(--text-main);
        }

        .cms-feature-info p {
            color: var(--text-sub);
            font-size: 15px;
            margin: 4px 0 12px;
        }

        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cms-row {
            background: var(--bg0);
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 20px 28px;
            display: flex;
            align-items: center;
            gap: 30px;
            transition: all .3s;
        }

        .cms-row:hover {
            border-color: rgba(0,223,168,.3);
            transform: translateX(4px);
        }

        .cms-cat {
            flex-shrink: 0;
            padding: 6px 16px;
            background: rgba(0,223,168,.1);
            color: var(--neon);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .04em;
            white-space: nowrap;
            border: 1px solid rgba(0,223,168,.18);
        }

        .cms-body {
            flex: 1;
            min-width: 0;
        }

        .cms-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 4px;
        }

        .cms-body p {
            color: var(--text-sub);
            font-size: 13px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .cms-time {
            flex-shrink: 0;
            color: #6b7a88;
            font-size: 13px;
            white-space: nowrap;
        }

        .cms-empty {
            background: var(--bg1);
            border: 1px dashed var(--line-strong);
            border-radius: var(--radius-panel);
            padding: 60px 40px;
            text-align: center;
            color: var(--text-sub);
            font-size: 15px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 14px;
        }

        .cms-empty i {
            font-size: 32px;
            color: #4c5b6a;
        }

        /* ======== Featured 精选条目 ======== */
        .featured {
            background: var(--bg0);
        }

        .featured-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 0;
            background: var(--bg1);
            border-radius: var(--radius-panel);
            overflow: hidden;
            border: 1px solid var(--line);
            min-height: 420px;
        }

        .featured-media {
            position: relative;
            overflow: hidden;
            min-height: 360px;
            background: #1b2229;
        }

        .featured-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: all .6s;
        }

        .featured-media:hover img {
            transform: scale(1.04);
        }

        .featured-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(270deg, rgba(17,22,28,.8) 0%, transparent 38%);
        }

        .featured-content {
            padding: clamp(28px, 5vw, 60px);
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 20px;
        }

        .featured-content .sec-label {
            color: var(--amber);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .featured-content .sec-label i {
            font-size: 16px;
        }

        .featured-content h3 {
            font-family: "Noto Serif SC", serif;
            font-size: clamp(20px, 2.4vw, 28px);
            line-height: 1.5;
            color: var(--text-main);
        }

        .featured-content p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
        }

        .featured-stats {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-top: 8px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stat-num {
            font-family: "Noto Serif SC", serif;
            font-size: 28px;
            font-weight: 700;
            color: var(--neon);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-sub);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--bg0);
            padding-top: 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .mini-card {
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all .35s;
        }

        .mini-card:hover {
            border-color: rgba(0,223,168,.4);
            transform: translateY(-5px);
            box-shadow: 0 24px 60px -40px rgba(0, 0, 0, .9);
        }

        .mini-card-media {
            aspect-ratio: 16 / 9;
            background: #172028;
            position: relative;
            overflow: hidden;
        }

        .mini-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: all .5s;
        }

        .mini-card:hover .mini-card-media img {
            transform: scale(1.06);
        }

        .mini-card-body {
            padding: 22px 22px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mini-tag {
            align-self: flex-start;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(0,223,168,.07);
            border: 1px solid rgba(0,223,168,.18);
            color: var(--neon);
            font-size: 12px;
            font-weight: 600;
        }

        .mini-card h3 {
            font-size: 16px;
            line-height: 1.6;
            font-weight: 600;
        }

        .mini-card h3 a:hover {
            color: var(--neon);
        }

        .mini-card p {
            color: var(--text-sub);
            font-size: 13px;
            line-height: 1.75;
        }

        /* Collection CTA */
        .cta-collect {
            background: var(--bg0);
            padding: 20px 0 112px;
        }

        .cta-box {
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: var(--radius-panel);
            padding: 42px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .cta-box h3 {
            font-family: "Noto Serif SC", serif;
            font-size: 22px;
            margin-bottom: 6px;
        }

        .cta-box p {
            color: var(--text-sub);
            font-size: 14px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .outline-btn-soft {
            padding: 11px 22px;
            background: transparent;
            border: 1px solid var(--line-strong);
            border-radius: 999px;
            color: var(--text-main);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .3s;
        }
        .outline-btn-soft:hover {
            border-color: var(--neon);
            color: var(--neon);
        }

        /* Footer */
        .site-footer {
            border-top: 1px solid var(--line);
            background: var(--bg1);
            padding-top: 56px;
            padding-bottom: 30px;
        }

        .footer-grid {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 38px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 13px;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 14px;
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: .06em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: var(--text-sub);
            font-size: 14px;
            transition: color .3s;
        }
        .footer-col a:hover {
            color: var(--neon);
        }

        .footer-bottom {
            border-top: 1px solid var(--line);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            color: #7a8895;
            font-size: 13px;
        }

        /* FAQ 基础样式 复用 */
        .faq-item {
            border-bottom: 1px solid var(--line);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            cursor: pointer;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--neon);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .3s;
            color: var(--neon);
            flex-shrink: 0;
            position: relative;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--neon);
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 10px;
            height: 1.5px;
        }
        .faq-icon::after {
            width: 1.5px;
            height: 10px;
            transition: all .3s;
        }
        .faq-answer {
            display: none;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.9;
            padding-bottom: 20px;
            max-width: 700px;
            padding-left: 40px;
        }
        .faq-item.open .faq-icon::after {
            transform: scaleY(0);
        }

        .faq-section {
            background: var(--bg0);
        }

        .reader {
            color: var(--text-sub);
        }

        /* responsive */
        @media (max-width: 1024px) {

            .dir-card:first-child {
                grid-column: span 12;
                display: grid;
                grid-template-columns: 1fr;
            }

            .cms-feature-inner {
                grid-template-columns: 1fr;
            }

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

            .featured-media {
                order: 2;
            }

            .featured-content {
                order: 1;
            }

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

        @media (max-width: 768px) {
            .section {
                padding: 72px 0;
            }

            .main-nav .nav-links {
                display: none;
            }

            .main-nav .nav-cta {
                display: none;
            }

            .burger {
                display: flex;
            }

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

            .dir-card,
            .dir-card:first-child {
                grid-column: span 1;
            }

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

            .cms-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 18px 20px;
            }

            .cms-body h3 {
                white-space: normal;
                line-height: 1.6;
            }
            .cms-body p {
                white-space: normal;
            }

            .footer-grid {
                flex-direction: column;
                gap: 30px;
            }

            .cta-box {
                padding: 30px 24px;
            }

            .hero h1 {
                font-size: clamp(28px, 6.8vw, 64px);
            }
        }

        @media (max-width: 520px) {
            .dir-card {
                padding: 26px 24px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }

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

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

            .mini-card h3 {
                font-size: 15px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
        }

/* roulang page: category1 */
:root {
            --bg0: #0B0E11;
            --bg1: #11161C;
            --bg2: #192128;
            --line: rgba(238, 244, 250, 0.09);
            --line-strong: rgba(238, 244, 250, 0.16);
            --text-main: #EDF2F7;
            --text-sub: #A3AEB8;
            --neon: #00DFA8;
            --neon-bright: #66F0C8;
            --amber: #F0B35B;
            --danger: #F2657D;
            --radius-card: 16px;
            --radius-panel: 20px;
            --shadow-deep: 0 20px 60px -40px rgba(0, 0, 0, .8);
            --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg0);
            color: var(--text-main);
            font-family: var(--sans);
            line-height: 1.85;
            font-size: 16.5px;
            -webkit-font-smoothing: antialiased;
        }

        img,
        a,
        button {
            -webkit-tap-highlight-color: transparent;
        }

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: clamp(18px, 4vw, 48px);
            padding-right: clamp(18px, 4vw, 48px);
        }

        .section-pad {
            padding-top: clamp(64px, 8vw, 112px);
            padding-bottom: clamp(64px, 8vw, 112px);
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--serif);
            font-weight: 700;
            font-size: 20px;
            color: var(--text-main);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--neon);
            color: #0B0E11;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: var(--sans);
            font-weight: 800;
            font-size: 14px;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 223, 168, .25);
        }

        .main-nav {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 68px;
            background: rgba(11, 14, 17, .88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(180deg, rgba(11, 14, 17, .92), rgba(11, 14, 17, .85));
            background-clip: padding-box;
        }

        .main-nav::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--neon), transparent);
            opacity: .7;
        }

        .main-nav .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin-left: 36px;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14.5px;
            color: var(--text-sub);
            border-radius: 999px;
            transition: color .25s, background .25s;
            position: relative;
            letter-spacing: .02em;
        }

        .nav-links a:hover {
            color: var(--text-main);
            background: rgba(238, 244, 250, .04);
        }

        .nav-links li.active a {
            color: var(--neon);
            font-weight: 500;
        }

        .nav-links li.active a::after {
            content: "";
            position: absolute;
            bottom: 0px;
            left: 50%;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--neon);
            box-shadow: 0 0 8px rgba(0, 223, 168, .7);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            background: var(--neon);
            color: #0B0E11;
            font-size: 14px;
            font-weight: 700;
            border-radius: 999px;
            transition: background .25s, box-shadow .25s, transform .25s;
            white-space: nowrap;
            letter-spacing: .02em;
        }

        .nav-cta:hover {
            background: var(--neon-bright);
            box-shadow: 0 0 24px rgba(0, 223, 168, .35);
            transform: translateY(-1px);
        }

        .nav-cta i {
            font-size: 13px;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 22px;
            cursor: pointer;
            padding: 6px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .18em;
            color: var(--neon);
            text-transform: uppercase;
            font-family: var(--sans);
        }

        .eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--neon);
            opacity: .6;
        }

        .page-hero {
            position: relative;
            overflow: hidden;
            background-color: #0B0E11;
            padding: clamp(60px, 7vw, 100px) 0;
            border-bottom: 1px solid var(--line);
        }

        .page-hero .bg-layer {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 40%;
            opacity: .5;
        }

        .page-hero .bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 14, 17, .97) 20%, rgba(11, 14, 17, .68) 60%, rgba(11, 14, 17, .4));
        }

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

        .page-hero h1 {
            font-family: var(--serif);
            font-size: clamp(30px, 5vw, 56px);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.015em;
            max-width: 720px;
            margin-top: 18px;
            color: #fff;
        }

        .page-hero h1 .highlight {
            background: linear-gradient(120deg, var(--neon) 0%, var(--neon-bright) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero .lead-desc {
            margin-top: 20px;
            max-width: 560px;
            color: rgba(237, 242, 247, .78);
            font-size: 16px;
            line-height: 1.9;
            letter-spacing: .02em;
        }

        .page-hero .hero-badges {
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 999px;
            background: rgba(11, 14, 17, .6);
            border: 1px solid var(--line-strong);
            font-size: 13.5px;
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }

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

        .steps-section {
            background: var(--bg0);
        }

        .cat1-steps {
            position: relative;
            padding: 0;
            list-style: none;
        }

        .cat1-steps::before {
            content: "";
            position: absolute;
            top: 12px;
            bottom: 12px;
            left: 36px;
            width: 1px;
            background: linear-gradient(180deg, var(--line-strong), rgba(238, 244, 250, .03));
        }

        .cat1-step-item {
            position: relative;
            padding-left: 84px;
            padding-bottom: clamp(44px, 5vw, 72px);
        }

        .cat1-step-item:last-child {
            padding-bottom: 0;
        }

        .cat1-step-item .step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 72px;
            height: 72px;
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            font-family: var(--serif);
            color: var(--neon);
            box-shadow: inset 0 0 20px rgba(0, 0, 0, .3);
            z-index: 1;
        }

        .cat1-step-item .step-body {
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: var(--radius-panel);
            padding: clamp(24px, 3vw, 36px);
            transition: border-color .3s, transform .3s, box-shadow .3s;
            max-width: 840px;
        }

        .cat1-step-item .step-body:hover {
            border-color: rgba(0, 223, 168, .35);
            transform: translateY(-2px);
            box-shadow: var(--shadow-deep);
        }

        .cat1-step-item .step-title {
            font-family: var(--serif);
            font-size: clamp(19px, 2.4vw, 25px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .cat1-step-item .step-desc {
            font-size: 15.5px;
            line-height: 1.9;
            color: var(--text-sub);
        }

        .cat1-step-item .step-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-sub);
            padding-top: 14px;
            border-top: 1px solid var(--line);
        }

        .cat1-step-item .step-meta i {
            color: var(--neon);
            margin-right: 4px;
            font-style: normal;
            font-size: 12px;
        }

        .section-title-wrap {
            margin-bottom: clamp(30px, 4vw, 52px);
        }

        .section-title-wrap .section-title {
            font-family: var(--serif);
            font-size: clamp(26px, 3.8vw, 44px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .section-title-wrap .section-sub {
            max-width: 620px;
            font-size: 15.5px;
            color: var(--text-sub);
            margin-top: 10px;
        }

        .notice-strip {
            max-width: calc(100% - 48px);
            border-left: 2px solid var(--amber);
            background: rgba(240, 179, 91, .07);
            border-radius: 0 12px 12px 0;
            padding: 18px 20px;
            font-size: 14.5px;
            color: rgba(237, 242, 247, .85);
        }

        .notice-strip strong {
            color: var(--amber);
            font-weight: 600;
        }

        .notice-strip i {
            color: var(--amber);
            margin-right: 8px;
        }

        .related-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .related-link-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border: 1px solid var(--line-strong);
            border-radius: 999px;
            font-size: 14px;
            color: var(--text-main);
            transition: border-color .25s, color .25s, transform .25s;
        }

        .related-link-pill:hover {
            border-color: var(--neon);
            color: var(--neon);
            transform: translateX(2px);
        }

        .related-link-pill i {
            font-size: 12px;
            color: var(--neon);
        }

        .faq-section {
            background: var(--bg1);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .faq-list .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 4px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            transition: color .25s;
            list-style: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--sans);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border: 1px solid var(--line-strong);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--neon);
            transition: transform .3s, background .3s, color .3s, border-color .3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--neon);
            color: #0B0E11;
            border-color: var(--neon);
        }

        .faq-answer {
            display: none;
            padding: 0 28px 22px 4px;
            color: var(--text-sub);
            font-size: 15.5px;
            line-height: 1.9;
            max-width: 860px;
        }

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

        .cta-section {
            margin-top: clamp(64px, 7vw, 100px);
            margin-bottom: clamp(64px, 7vw, 100px);
            position: relative;
            border-radius: var(--radius-panel);
            overflow: hidden;
            background: var(--bg1);
            border: 1px solid var(--line);
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--neon), transparent);
            opacity: .5;
        }

        .cta-panel {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
            padding: clamp(28px, 4vw, 44px);
        }

        .cta-panel .cta-title {
            font-family: var(--serif);
            font-size: clamp(20px, 2.6vw, 28px);
            font-weight: 700;
            line-height: 1.4;
        }

        .cta-panel .cta-text {
            margin-top: 8px;
            font-size: 14.5px;
            color: var(--text-sub);
            max-width: 480px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--neon);
            color: #0B0E11;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: all .25s;
        }

        .btn-primary:hover {
            background: var(--neon-bright);
            box-shadow: 0 0 28px rgba(0, 223, 168, .35);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border: 1px solid rgba(238, 244, 250, .25);
            color: var(--text-main);
            font-size: 15px;
            border-radius: 999px;
            transition: all .25s;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--neon-bright);
            color: #fff;
            transform: translateY(-1px);
        }

        .site-footer {
            margin-top: auto;
            background: var(--bg0);
            border-top: 1px solid var(--line);
        }

        .site-footer .container {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--line);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 14px;
            max-width: 340px;
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: .04em;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul a,
        .footer-col ul li {
            font-size: 13.5px;
            color: var(--text-sub);
            transition: color .2s;
        }

        .footer-col ul a:hover {
            color: var(--neon);
        }

        .footer-bottom {
            padding-top: 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            justify-content: center;
            font-size: 13px;
            color: var(--text-sub);
        }

        .section-divider {
            height: 1px;
            background: var(--line);
            max-width: 1280px;
            margin: 0 auto;
        }

        @media (min-width: 1025px) {
            .nav-links a {
                font-size: 14px;
            }
        }

        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .main-nav .container {
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            body {
                font-size: 16px;
                line-height: 1.8;
            }
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .logo {
                font-size: 17px;
            }
            .page-hero h1 {
                line-height: 1.35;
            }
            .page-hero .lead-desc {
                font-size: 15.5px;
            }
            .section-title-wrap .section-title {
                line-height: 1.35;
            }
            .cat1-steps::before {
                left: 24px;
            }
            .cat1-step-item {
                padding-left: 60px;
            }
            .cat1-step-item .step-num {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .faq-question {
                font-size: 15px;
                padding-left: 8px;
                padding-right: 8px;
            }
            .faq-answer {
                padding-left: 8px;
                font-size: 15px;
            }
        }

        @media (max-width: 480px) {
            .logo .logo-text {
                font-size: 15px;
            }
        }

        .nav-menu-mobile {
            display: none;
            position: fixed;
            top: 68px;
            right: 0;
            bottom: 0;
            width: 260px;
            background: rgba(11, 14, 17, .98);
            backdrop-filter: blur(20px);
            padding: 24px 18px;
            z-index: 60;
            border-left: 1px solid var(--line);
        }

        .nav-menu-mobile.open {
            display: block;
        }

        .nav-menu-mobile ul {
            list-style: none;
        }

        .nav-menu-mobile li {
            margin-bottom: 6px;
        }

        .nav-menu-mobile a {
            padding: 10px 12px;
            display: block;
            color: var(--text-sub);
            border-radius: 10px;
            font-size: 15px;
        }

        .nav-menu-mobile li.active a {
            color: var(--neon);
            background: rgba(0, 223, 168, .08);
            font-weight: 600;
        }

        .nav-menu-mobile a:hover {
            color: var(--text-main);
            background: rgba(238, 244, 250, .04);
        }

        .nav-menu-mobile .nav-cta-wrap {
            margin-top: 24px;
        }

        .nav-menu-mobile .nav-cta-wrap .nav-cta {
            display: flex;
            justify-content: center;
        }

        img.error,
        .img-placeholder {
            background: #192128;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #56636D;
            font-size: 14px;
        }

        .coverimg,
        .bgimg {
            object-fit: cover;
            width: 100%;
            height: 100%;
        }

        .img-wrap {
            overflow: hidden;
            position: relative;
            background: var(--bg2);
        }

        .img-wrap img {
            transition: transform .6s cubic-bezier(.16, 1, .3, 1);
        }

        .img-wrap:hover img {
            transform: scale(1.02);
        }

        .strong-card {
            transition: border-color .25s, transform .25s;
        }

        .strong-card:hover {
            border-color: var(--neon) !important;
        }

        .block-step:active,
        a:active,
        button:active {
            filter: brightness(.98);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: article */
:root {
            --bg0: #0B0E11;
            --bg1: #11161C;
            --bg2: #192128;
            --line: rgba(238, 244, 250, 0.09);
            --line-strong: rgba(238, 244, 250, 0.16);
            --text-main: #EDF2F7;
            --text-sub: #A3AEB8;
            --neon: #00DFA8;
            --neon-bright: #66F0C8;
            --amber: #F0B35B;
            --danger: #F2657D;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --radius-card: 16px;
            --radius-panel: 20px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg0);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        body.nav-lock {
            overflow: hidden;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
            background: var(--bg2);
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container {
            width: min(1280px, calc(100% - clamp(36px, 8vw, 96px)));
            margin: 0 auto;
        }

        .section-padding {
            padding-top: clamp(72px, 10vw, 120px);
            padding-bottom: clamp(72px, 10vw, 120px);
        }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border-radius: 999px;
            height: 48px;
            padding: 0 28px;
            border: 0;
            background: transparent;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: transform 0.25s, box-shadow 0.25s, background 0.25s, border 0.25s, color 0.25s;
        }

        .btn-primary {
            background: var(--neon);
            color: #08120D;
        }

        .btn-primary:hover {
            background: var(--neon-bright);
            transform: translateY(-2px);
            box-shadow: 0 14px 36px -12px rgba(0, 223, 168, 0.45);
        }

        .btn-ghost {
            border: 1px solid var(--line-strong);
        }

        .btn-ghost:hover {
            border-color: rgba(238, 244, 250, 0.38);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 68px;
            background: rgba(11, 14, 17, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--line);
        }

        .site-header::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 223, 168, 0.55), transparent);
            pointer-events: none;
        }

        .header-inner {
            position: relative;
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 11px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 17px;
            color: var(--text-main);
            white-space: nowrap;
            transition: color 0.25s;
        }

        .logo:hover {
            color: var(--neon-bright);
        }

        .logo-mark {
            display: inline-grid;
            place-items: center;
            width: 30px;
            height: 30px;
            border: 1px solid rgba(0, 223, 168, 0.5);
            border-radius: 50%;
            color: var(--neon);
            font-family: var(--font-serif);
            font-size: 13px;
            box-shadow: 0 0 0 4px rgba(0, 223, 168, 0.03), 0 0 22px rgba(0, 223, 168, 0.14);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

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

        .nav-links a {
            position: relative;
            display: inline-block;
            padding: 12px 0;
            font-size: 15px;
            color: var(--text-sub);
            transition: color 0.25s, text-shadow 0.25s;
        }

        .nav-links a:hover {
            color: var(--text-main);
        }

        .nav-links li.active a {
            color: var(--neon);
            text-shadow: 0 0 18px rgba(0, 223, 168, 0.2);
        }

        .nav-links li.active a::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 4px;
            width: 18px;
            height: 2px;
            border-radius: 2px;
            background: var(--neon);
            box-shadow: 0 0 12px rgba(0, 223, 168, 0.55);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            height: 40px;
            padding: 0 20px;
            border-radius: 999px;
            background: var(--neon);
            color: #08120D;
            font-size: 14px;
            font-weight: 700;
            border: 0;
            transition: background 0.25s, box-shadow 0.25s, transform 0.25s;
        }

        .nav-cta:hover {
            background: var(--neon-bright);
            box-shadow: 0 8px 28px -8px rgba(0, 223, 168, 0.6);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(238, 244, 250, 0.05);
            border: 1px solid var(--line);
            color: var(--text-main);
            font-size: 17px;
        }

        @media (max-width: 900px) {
            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 18px;
                padding: 22px 24px 28px;
                background: rgba(10, 13, 16, 0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-bottom: 1px solid var(--line);
                border-radius: 0 0 18px 18px;
                box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.9);
            }

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

            .nav-links {
                flex-direction: column;
                gap: 2px;
                width: 100%;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                display: block;
                width: 100%;
                padding: 12px 8px;
                border-bottom: 1px solid var(--line);
            }

            .nav-links li.active a::after {
                display: none;
            }

            .nav-cta {
                align-self: flex-start;
            }
        }

        /* ===== 文章头图 ===== */
        .article-hero {
            position: relative;
            padding: 72px 0 88px;
            border-bottom: 1px solid var(--line);
            background:
                radial-gradient(circle at 78% 16%, rgba(0, 223, 168, 0.08), transparent 30%),
                linear-gradient(180deg, rgba(11, 14, 17, 0.6), var(--bg0) 92%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 34px;
            font-size: 13px;
            color: var(--text-sub);
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.25s;
        }

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

        .breadcrumb .bc-current {
            color: rgba(238, 244, 250, 0.72);
        }

        .article-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--neon);
            font-size: 14px;
            letter-spacing: 0.08em;
            margin-bottom: 6px;
        }

        .article-eyebrow i {
            font-size: 13px;
        }

        .article-title {
            max-width: 960px;
            margin: 14px 0 22px;
            font-family: var(--font-serif);
            font-size: clamp(32px, 5vw, 56px);
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.015em;
        }

        .article-lead {
            max-width: 860px;
            color: var(--text-sub);
            font-size: 17px;
            line-height: 1.9;
            margin: 0;
        }

        .article-meta-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 28px;
            padding-top: 22px;
            border-top: 1px solid var(--line);
            color: var(--text-sub);
            font-size: 14px;
        }

        .article-meta-line span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta-line .meta-cat-tag {
            display: inline-flex;
            padding: 4px 13px;
            border-radius: 999px;
            background: rgba(0, 223, 168, 0.1);
            border: 1px solid rgba(0, 223, 168, 0.25);
            color: var(--neon);
            font-size: 13px;
            line-height: 1.6;
        }

        /* ===== 正文阅读 ===== */
        .reading-wrap {
            padding: 78px 0 86px;
        }

        .article-core {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-notice {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            margin-bottom: 44px;
            border: 1px solid var(--line);
            border-left: 2px solid var(--neon);
            border-radius: 10px;
            background: rgba(0, 223, 168, 0.035);
            color: var(--text-sub);
            font-size: 14px;
        }

        .article-notice i {
            color: var(--neon);
            font-size: 15px;
        }

        .article-body {
            font-size: 17px;
            line-height: 1.9;
            color: #D7DFE8;
            overflow-wrap: break-word;
        }

        .article-body > * + * {
            margin-top: 1.35em;
        }

        .article-body h2 {
            position: relative;
            margin-top: 2.2em;
            padding-left: 18px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: clamp(23px, 3vw, 30px);
            line-height: 1.45;
            color: var(--text-main);
        }

        .article-body h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.22em;
            width: 4px;
            height: 1.5em;
            border-radius: 2px;
            background: var(--neon);
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.6;
            margin-top: 1.8em;
        }

        .article-body p {
            margin: 0;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.4em;
            margin: 1.2em 0;
        }

        .article-body li {
            margin: 0.5em 0;
            padding-left: 0.3em;
        }

        .article-body a {
            color: var(--neon);
            border-bottom: 1px solid rgba(0, 223, 168, 0.3);
            transition: color 0.25s, border 0.25s;
        }

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

        .article-body blockquote {
            margin: 1.8em 0;
            padding: 6px 0 6px 24px;
            border-left: 1px solid var(--line-strong);
            color: var(--text-sub);
        }

        .article-body blockquote p {
            margin: 0;
        }

        .article-body img {
            width: auto;
            max-width: 100%;
            height: auto;
            border-radius: 14px;
            margin: 30px 0;
            box-shadow: 0 24px 64px -36px rgba(0, 0, 0, 0.9);
        }

        .article-body hr {
            border: 0;
            height: 1px;
            background: var(--line);
            margin: 2.4em 0;
        }

        /* 文末引导区 */
        .entry-guide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 52px;
            padding: 30px 34px;
            border-radius: var(--radius-panel);
            background: var(--bg1);
            border: 1px solid var(--line);
            box-shadow: 0 24px 60px -48px rgba(0, 0, 0, 0.9);
        }

        .entry-guide .eg-title {
            font-size: 12px;
            letter-spacing: 0.14em;
            color: var(--neon);
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .entry-guide h3 {
            margin: 0;
            font-family: var(--font-serif);
            font-size: clamp(19px, 2.4vw, 25px);
            line-height: 1.5;
            color: var(--text-main);
        }

        .entry-guide p {
            margin: 6px 0 0;
            color: var(--text-sub);
            font-size: 14px;
            max-width: 520px;
        }

        .entry-guide .eg-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* 收藏 / 分享工具 */
        .article-tools {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 44px;
            padding-top: 28px;
            border-top: 1px solid var(--line);
        }

        .act-btn {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            height: 44px;
            padding: 0 20px;
            border-radius: 999px;
            border: 1px solid var(--line-strong);
            background: rgba(238, 244, 250, 0.03);
            color: var(--text-sub);
            font-size: 14px;
            transition: all 0.25s;
        }

        .act-btn:hover {
            color: var(--text-main);
            border-color: rgba(0, 223, 168, 0.45);
            background: rgba(0, 223, 168, 0.05);
        }

        .act-btn.is-active {
            color: var(--neon);
            border-color: rgba(0, 223, 168, 0.6);
            background: rgba(0, 223, 168, 0.09);
        }

        .act-btn i {
            font-size: 15px;
        }

        /* ===== 栏目路径区 ===== */
        .path-section {
            background: var(--bg1);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding-top: clamp(74px, 9vw, 108px);
            padding-bottom: clamp(74px, 9vw, 108px);
        }

        .path-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: clamp(34px, 6vw, 74px);
            align-items: center;
        }

        .sec-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 223, 168, 0.08);
            border: 1px solid rgba(0, 223, 168, 0.2);
            color: var(--neon);
            font-size: 13px;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }

        .path-copy h2 {
            margin: 0 0 18px;
            font-family: var(--font-serif);
            font-size: clamp(26px, 3.4vw, 40px);
            line-height: 1.32;
            color: var(--text-main);
        }

        .path-copy > p {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.9;
            max-width: 640px;
            margin: 0 0 26px;
        }

        .path-links {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .path-visual {
            overflow: hidden;
            border-radius: 18px;
            border: 1px solid var(--line);
            box-shadow: 0 30px 80px -50px rgba(0, 0, 0, 0.95);
        }

        .path-visual img {
            width: 100%;
            height: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .path-visual:hover img {
            transform: scale(1.03);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding-top: clamp(80px, 10vw, 120px);
            padding-bottom: clamp(72px, 9vw, 118px);
        }

        .related-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 44px;
        }

        .related-head .sec-tag {
            margin-bottom: 8px;
        }

        .related-head h2 {
            margin: 0;
            font-family: var(--font-serif);
            font-size: clamp(25px, 3.4vw, 40px);
            line-height: 1.3;
            color: var(--text-main);
        }

        .back-home {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.25s, gap 0.25s;
        }

        .back-home:hover {
            color: var(--neon);
            gap: 12px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .rel-card {
            display: flex;
            align-items: stretch;
            min-height: 220px;
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform 0.3s, border 0.3s, box-shadow 0.3s;
        }

        .rel-card:hover {
            border-color: rgba(0, 223, 168, 0.45);
            transform: translateY(-4px);
            box-shadow: 0 28px 70px -46px rgba(0, 0, 0, 0.9);
        }

        .rel-media {
            width: 42%;
            min-width: 42%;
            overflow: hidden;
            background: var(--bg2);
        }

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

        .rel-card:hover .rel-media img {
            transform: scale(1.04);
        }

        .rel-body {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            justify-content: center;
            padding: 26px 26px;
        }

        .rel-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 13px;
            border-radius: 999px;
            background: rgba(0, 223, 168, 0.09);
            border: 1px solid rgba(0, 223, 168, 0.18);
            color: var(--neon);
            font-size: 12px;
            margin-bottom: 12px;
        }

        .rel-body h3 {
            margin: 0;
            font-family: var(--font-serif);
            font-size: 20px;
            line-height: 1.45;
            color: var(--text-main);
        }

        .rel-body p {
            margin: 10px 0 18px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
        }

        .rel-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--neon);
            font-size: 14px;
            font-weight: 600;
            margin-top: auto;
        }

        .rel-link i {
            transition: transform 0.25s;
        }

        .rel-card:hover .rel-link i {
            transform: translateX(4px);
        }

        /* ===== 未找到内容 ===== */
        .notfound-section {
            padding-top: 70px;
            padding-bottom: 110px;
        }

        .notfound-panel {
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
            padding: 70px 42px;
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: var(--radius-panel);
        }

        .notfound-panel .nf-icon {
            display: inline-grid;
            place-items: center;
            width: 74px;
            height: 74px;
            border-radius: 50%;
            border: 1px solid var(--line-strong);
            color: var(--neon);
            font-size: 30px;
            margin-bottom: 24px;
            background: rgba(0, 223, 168, 0.04);
        }

        .notfound-panel h2 {
            margin: 0 0 12px;
            font-family: var(--font-serif);
            font-size: 30px;
        }

        .notfound-panel p {
            color: var(--text-sub);
            margin: 0 0 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            border-top: 1px solid var(--line);
            background: #080B0E;
        }

        .site-footer .container {
            padding-top: 56px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 42px;
        }

        .footer-brand .logo {
            font-size: 18px;
        }

        .footer-brand .logo-mark {
            width: 30px;
            height: 30px;
        }

        .footer-brand p {
            max-width: 360px;
            margin: 16px 0 0;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.85;
        }

        .footer-col h4 {
            margin: 0 0 18px;
            font-size: 15px;
            color: var(--text-main);
            font-weight: 700;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .footer-col ul a {
            transition: color 0.25s, padding-left 0.25s;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--line);
            padding: 22px 0;
            text-align: center;
            color: var(--text-sub);
            font-size: 13px;
        }

        .footer-bottom i {
            margin-right: 3px;
        }

        /* ===== Toast ===== */
        .page-toast {
            position: fixed;
            left: 50%;
            bottom: 42px;
            transform: translateX(-50%) translateY(16px);
            z-index: 90;
            padding: 12px 24px;
            border-radius: 999px;
            background: var(--bg1);
            border: 1px solid rgba(0, 223, 168, 0.4);
            color: var(--text-main);
            font-size: 14px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
            box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.9);
        }

        .page-toast.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-hero {
                padding: 56px 0 72px;
            }

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

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

            .rel-card {
                min-height: 200px;
            }

            .rel-body {
                padding: 22px;
            }
        }

        @media (max-width: 768px) {
            .reading-wrap {
                padding: 56px 0 72px;
            }

            .article-core {
                width: 100%;
            }

            .article-notice {
                margin-bottom: 34px;
            }

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

            .rel-card {
                flex-direction: row;
            }

            .related-head {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .entry-guide {
                padding: 24px;
            }

            .entry-guide .eg-btns {
                width: 100%;
            }

            .article-tools .act-btn {
                flex: 1 1 auto;
            }
        }

        @media (max-width: 520px) {
            .article-meta-line span {
                white-space: normal;
            }

            .article-lead {
                font-size: 15px;
            }

            .rel-card {
                flex-direction: column;
            }

            .rel-media {
                width: 100%;
                min-width: 100%;
                aspect-ratio: 16 / 9;
            }

            .rel-body {
                align-items: flex-start;
            }

            .act-btn span {
                font-size: 13px;
            }

            .container {
                width: min(1280px, calc(100% - 32px));
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg0: #0B0E11;
            --bg1: #11161C;
            --bg2: #192128;
            --line: rgba(238, 244, 250, 0.09);
            --line-strong: rgba(238, 244, 250, 0.16);
            --text-main: #EDF2F7;
            --text-sub: #A3AEB8;
            --neon: #00DFA8;
            --neon-bright: #66F0C8;
            --amber: #F0B35B;
            --danger: #F2657D;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg0);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--neon);
            outline-offset: 4px;
            border-radius: 6px;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: clamp(18px, 4vw, 48px);
            padding-right: clamp(18px, 4vw, 48px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 14, 17, 0.84);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--line);
        }

        .site-header::after {
            content: "";
            display: block;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 223, 168, 0.65), transparent);
            pointer-events: none;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 68px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-main);
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.01em;
        }

        .logo-mark {
            display: inline-grid;
            place-items: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--neon);
            color: #0B0E11 !important;
            font-family: var(--font-sans);
            font-size: 12px;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 223, 168, 0.25);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 24px 16px;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            line-height: 1;
            transition: color 0.25s ease;
        }

        .nav-links a:hover {
            color: var(--text-main);
        }

        .nav-links li.active a {
            color: var(--neon);
        }

        .nav-links li.active a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 14px;
            height: 2px;
            border-radius: 999px;
            background: var(--neon);
            box-shadow: 0 0 10px rgba(0, 223, 168, 0.7);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            flex-shrink: 0;
            border-radius: 999px;
            background: var(--neon);
            color: #0B0E11;
            font-weight: 700;
            font-size: 14px;
            transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        .nav-cta:hover {
            background: var(--neon-bright);
            box-shadow: 0 0 24px rgba(0, 223, 168, 0.35);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--line-strong);
            border-radius: 50%;
            color: var(--text-main);
            font-size: 16px;
            cursor: pointer;
        }

        .page-hero {
            position: relative;
            display: flex;
            align-items: center;
            min-height: 620px;
            padding: 110px 0 90px;
            overflow: hidden;
            background:
                linear-gradient(180deg, rgba(11, 14, 17, 0.78) 0%, rgba(11, 14, 17, 0.92) 82%),
                var(--bg0);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-position: center;
            background-size: cover;
            opacity: 0.26;
            filter: saturate(0.7);
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 17, 0.88) 0%, rgba(11, 14, 17, 0.55) 60%, rgba(11, 14, 17, 0.2) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 920px;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            color: var(--neon);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.14em;
        }

        .kicker-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--neon);
            box-shadow: 0 0 12px rgba(0, 223, 168, 0.7);
        }

        .hero-title {
            margin: 0 0 22px;
            color: #F5F8FA;
            font-family: var(--font-serif);
            font-size: clamp(38px, 5.4vw, 68px);
            font-weight: 700;
            line-height: 1.16;
            letter-spacing: -0.01em;
        }

        .hero-lead {
            max-width: 780px;
            margin: 0;
            color: var(--text-sub);
            font-size: 17px;
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 38px;
        }

        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
        }

        .btn-primary {
            background: var(--neon);
            color: #0B0E11;
            font-weight: 700;
        }

        .btn-primary:hover {
            background: var(--neon-bright);
            box-shadow: 0 0 24px rgba(0, 223, 168, 0.3);
            transform: translateY(-2px);
        }

        .btn-ghost {
            border: 1px solid var(--line-strong);
            background: rgba(17, 22, 28, 0.6);
            color: var(--text-main);
        }

        .btn-ghost:hover {
            border-color: rgba(238, 244, 250, 0.4);
            background: var(--bg1);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 28px;
            max-width: 820px;
            margin-top: 52px;
            padding-top: 22px;
            border-top: 1px solid var(--line);
            color: var(--text-sub);
            font-size: 14px;
        }

        .hero-meta i {
            margin-right: 7px;
            color: var(--neon);
        }

        .content-section {
            padding: 104px 0;
        }

        .section--soft {
            background: linear-gradient(180deg, rgba(11, 14, 17, 0), rgba(17, 22, 28, 0.4));
        }

        .section-head {
            max-width: 860px;
            margin-bottom: 46px;
        }

        .section-kicker {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            color: var(--neon);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
        }

        .section-kicker::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--neon);
        }

        .section-title {
            margin: 0;
            color: var(--text-main);
            font-family: var(--font-serif);
            font-size: clamp(26px, 3.4vw, 42px);
            font-weight: 700;
            line-height: 1.28;
        }

        .section-desc {
            max-width: 720px;
            margin: 16px 0 0;
            color: var(--text-sub);
            font-size: 16px;
        }

        .chapter-index {
            border-top: 1px solid var(--line-strong);
            border-bottom: 1px solid var(--line-strong);
        }

        .chapter-row {
            display: grid;
            grid-template-columns: 96px 1fr 260px;
            gap: 24px;
            align-items: center;
            padding: 34px 12px 34px 0;
            border-bottom: 1px solid var(--line);
        }

        .chapter-row:last-child {
            border-bottom: 0;
        }

        .chapter-num {
            color: var(--neon);
            font-family: var(--font-serif);
            font-size: 34px;
            font-weight: 700;
            opacity: 0.9;
        }

        .chapter-info h3 {
            margin: 0 0 8px;
            color: var(--text-main);
            font-size: 20px;
            font-weight: 600;
        }

        .chapter-info p {
            margin: 0;
            color: var(--text-sub);
            font-size: 14px;
        }

        .chapter-tag {
            justify-self: end;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 12px;
            border-radius: 999px;
            border: 1px solid rgba(0, 223, 168, 0.3);
            color: var(--neon);
            font-size: 13px;
            background: rgba(0, 223, 168, 0.06);
        }

        .faq-wrap {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 48px;
            align-items: start;
        }

        .faq-list {
            display: block;
        }

        .faq-item {
            margin-bottom: 16px;
            background: var(--bg1);
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 24px;
            cursor: pointer;
            list-style: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            transition: color 0.25s ease;
        }

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

        .faq-item summary::marker {
            content: "";
            display: none;
        }

        .faq-item summary:hover {
            color: var(--neon-bright);
        }

        .faq-icon {
            position: relative;
            flex: 0 0 26px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid rgba(0, 223, 168, 0.45);
            background: rgba(0, 223, 168, 0.05);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--neon);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .faq-icon::before {
            width: 10px;
            height: 1.5px;
            transform: translate(-50%, -50%);
        }

        .faq-icon::after {
            width: 1.5px;
            height: 10px;
            transform: translate(-50%, -50%);
        }

        .faq-item[open] {
            border-color: rgba(0, 223, 168, 0.35);
        }

        .faq-item[open] .faq-icon {
            border-color: var(--neon);
        }

        .faq-item[open] .faq-icon::after {
            transform: translate(-50%, -50%) scaleY(0);
        }

        .faq-answer {
            padding: 0 24px 24px;
            color: var(--text-sub);
            font-size: 15px;
        }

        .faq-answer p {
            margin: 0 0 10px;
        }

        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        .security-aside {
            position: sticky;
            top: 100px;
        }

        .aside-card {
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: 22px;
            background: var(--bg1);
            box-shadow: 0 20px 60px -40px rgba(0, 0, 0, 0.8);
        }

        .aside-cover {
            position: relative;
            aspect-ratio: 16 / 8;
            overflow: hidden;
            background: var(--bg2);
        }

        .aside-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .aside-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(17, 22, 28, 0.2), rgba(17, 22, 28, 0.75));
        }

        .aside-body {
            padding: 24px 24px 26px;
        }

        .aside-body h3 {
            margin: 0 0 6px;
            color: var(--text-main);
            font-family: var(--font-serif);
            font-size: 22px;
        }

        .aside-body p {
            margin: 0 0 18px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
        }

        .check-list li {
            position: relative;
            padding: 10px 0 10px 26px;
            color: var(--text-sub);
            font-size: 14px;
            border-bottom: 1px solid var(--line);
            line-height: 1.7;
        }

        .check-list li:last-child {
            border-bottom: 0;
        }

        .check-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 12px;
            color: var(--neon);
            font-size: 12px;
        }

        .route-section {
            position: relative;
        }

        .route-layout {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 64px;
            align-items: center;
        }

        .route-copy p {
            margin: 0;
            color: var(--text-sub);
            font-size: 15px;
        }

        .route-steps {
            position: relative;
            padding-left: 26px;
        }

        .route-steps::before {
            content: "";
            position: absolute;
            left: 6px;
            top: 8px;
            bottom: 8px;
            width: 1px;
            background: linear-gradient(180deg, rgba(0, 223, 168, 0.7), rgba(0, 223, 168, 0.1));
        }

        .step-node {
            position: relative;
            padding: 0 0 40px;
        }

        .step-node:last-child {
            padding-bottom: 0;
        }

        .step-node::before {
            content: "";
            position: absolute;
            left: -27px;
            top: 9px;
            width: 13px;
            height: 13px;
            border-radius: 50%;
            background: var(--bg0);
            border: 2px solid var(--neon);
            box-shadow: 0 0 12px rgba(0, 223, 168, 0.25);
        }

        .step-node h3 {
            margin: 0 0 6px;
            color: var(--text-main);
            font-size: 18px;
            font-weight: 600;
        }

        .step-node p {
            margin: 0;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .safe-tips {
            display: grid;
            grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
            gap: 32px;
            align-items: stretch;
        }

        .safe-rule-list {
            display: grid;
            gap: 14px;
        }

        .safe-rule {
            display: flex;
            gap: 14px;
            padding: 22px 24px;
            border: 1px solid var(--line);
            border-radius: 18px;
            background: rgba(17, 22, 28, 0.5);
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .safe-rule:hover {
            border-color: rgba(0, 223, 168, 0.4);
            background: var(--bg1);
        }

        .safe-rule-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 38px;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: rgba(0, 223, 168, 0.08);
            border: 1px solid rgba(0, 223, 168, 0.2);
            color: var(--neon);
            font-size: 15px;
        }

        .safe-rule h3 {
            margin: 0 0 4px;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
        }

        .safe-rule p {
            margin: 0;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .warning-note {
            border: 1px solid rgba(242, 101, 125, 0.35);
            background: rgba(242, 101, 125, 0.06);
            border-radius: 20px;
            padding: 26px;
        }

        .warning-note h3 {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 0 12px;
            color: #F7A6B4;
            font-size: 16px;
        }

        .warning-note ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .warning-note li {
            position: relative;
            padding-left: 22px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
        }

        .warning-note li::before {
            content: "\f071";
            position: absolute;
            left: 0;
            top: 0;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--amber);
            font-size: 12px;
        }

        .cta-section {
            padding-bottom: 100px;
        }

        .cta-banner {
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            align-items: center;
            gap: 40px;
            overflow: hidden;
            padding: 54px;
            border-radius: 28px;
            border: 1px solid rgba(0, 223, 168, 0.22);
            background:
                linear-gradient(120deg, rgba(17, 22, 28, 0.96), rgba(11, 14, 17, 0.9)),
                var(--bg1);
        }

        .cta-banner h2 {
            margin: 0 0 12px;
            font-family: var(--font-serif);
            font-size: clamp(24px, 3vw, 36px);
            line-height: 1.35;
            color: var(--text-main);
        }

        .cta-banner p {
            margin: 0 0 26px;
            max-width: 640px;
            color: var(--text-sub);
            font-size: 15px;
        }

        .cta-symbol {
            display: grid;
            place-items: center;
            width: 112px;
            height: 112px;
            margin-left: auto;
            border-radius: 32px;
            background: rgba(0, 223, 168, 0.08);
            border: 1px solid rgba(0, 223, 168, 0.22);
            color: var(--neon);
            font-size: 40px;
        }

        .tool-section {
            padding: 0 0 100px;
        }

        .share-panel {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            justify-content: center;
            padding: 32px;
            border: 1px solid var(--line);
            border-radius: 24px;
            background: var(--bg1);
        }

        .tool-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 18px;
            background: var(--bg2);
            border: 1px solid var(--line-strong);
            border-radius: 999px;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
        }

        .tool-btn:hover {
            background: rgba(0, 223, 168, 0.12);
            border-color: rgba(0, 223, 168, 0.5);
            color: var(--neon-bright);
            transform: translateY(-2px);
        }

        .tool-btn.is-saved {
            background: rgba(0, 223, 168, 0.15);
            border-color: rgba(0, 223, 168, 0.55);
            color: var(--neon);
        }

        .site-footer {
            padding: 64px 0 28px;
            background: #0d1115;
            border-top: 1px solid var(--line);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 42px;
            border-bottom: 1px solid var(--line);
        }

        .footer-brand .logo {
            font-size: 17px !important;
            margin-bottom: 14px;
        }

        .footer-brand .logo-mark {
            width: 26px !important;
            height: 26px !important;
            font-size: 11px !important;
        }

        .footer-brand p {
            max-width: 360px;
            margin: 0;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
        }

        .footer-col h4 {
            margin: 0 0 16px;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
        }

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

        .footer-col ul a,
        .footer-col ul li {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 0.25s ease;
        }

        .footer-col ul a:hover {
            color: var(--neon);
        }

        .footer-bottom {
            display: flex;
            justify-content: center;
            align-items: center;
            padding-top: 24px;
            color: var(--text-sub);
            font-size: 14px;
        }

        .footer-bottom i {
            margin-right: 4px;
        }

        .toast-tip {
            position: fixed;
            left: 50%;
            bottom: 34px;
            transform: translateX(-50%) translateY(20px);
            z-index: 200;
            padding: 12px 20px;
            color: #0B0E11;
            background: var(--neon);
            border-radius: 999px;
            font-weight: 600;
            font-size: 14px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease, transform 0.3s ease;
            box-shadow: 0 12px 40px -12px rgba(0, 223, 168, 0.6);
        }

        .toast-tip.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        @media (max-width: 1024px) {
            .chapter-row {
                grid-template-columns: 70px 1fr;
            }

            .chapter-tag {
                justify-self: start;
                grid-column: 2;
            }

            .faq-wrap {
                grid-template-columns: 1fr;
            }

            .security-aside {
                position: static;
                max-width: 560px;
            }

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

            .safe-tips {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .cta-banner {
                grid-template-columns: 1fr;
                padding: 36px;
            }

            .cta-symbol {
                display: none;
            }

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

        @media (max-width: 820px) {
            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                gap: 0;
            }

            .nav-links {
                position: fixed;
                top: 68px;
                right: 0;
                width: min(82vw, 320px);
                height: calc(100vh - 68px);
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                padding: 22px 18px;
                background: rgba(11, 14, 17, 0.98);
                border-left: 1px solid var(--line);
                box-shadow: -20px 30px 60px rgba(0, 0, 0, 0.5);
                transform: translateX(calc(100% + 20px));
                transition: transform 0.35s ease;
            }

            .nav-links.open {
                transform: translateX(0);
            }

            .nav-links a {
                padding: 16px 14px;
                border-radius: 14px;
                border: 1px solid transparent;
            }

            .nav-links a:hover {
                background: rgba(255, 255, 255, 0.03);
            }

            .nav-links li.active a {
                background: rgba(0, 223, 168, 0.06);
                border-color: rgba(0, 223, 168, 0.14);
            }

            .nav-links li.active a::after {
                left: auto;
                right: auto;
                top: 50%;
                bottom: auto;
                transform: translateY(-50%);
                width: 4px;
                height: 4px;
                margin-left: 0;
                left: 14px;
                box-shadow: 0 0 10px rgba(0, 223, 168, 0.8);
            }

            .nav-cta {
                display: none;
            }

            .page-hero {
                min-height: 540px;
                padding: 88px 0 64px;
            }

            .content-section {
                padding: 72px 0;
            }
        }

        @media (max-width: 640px) {
            .cta-section {
                padding-bottom: 72px;
            }

            .tool-section {
                padding-bottom: 72px;
            }

            .hero-title {
                font-size: clamp(34px, 10vw, 50px);
            }

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

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
            }

            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }

            .chapter-row {
                grid-template-columns: 1fr;
                gap: 6px;
                padding: 26px 0;
            }

            .chapter-num {
                font-size: 26px;
            }

            .chapter-tag {
                margin-top: 8px;
            }

            .faq-item summary {
                padding: 18px 18px 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px 20px;
                font-size: 14px;
            }

            .safe-rule {
                flex-direction: column;
                gap: 12px;
            }

            .warning-note,
            .cta-banner,
            .share-panel {
                padding: 22px;
            }

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

            .footer-bottom {
                align-items: center;
                text-align: center;
                line-height: 1.7;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }

            html {
                scroll-behavior: auto;
            }
        }