/* roulang page: index */
:root {
            --ink: #16181D;
            --copper: #A97E5C;
            --copper-dark: #8E644A;
            --paper: #F4F1EC;
            --card: #FFFFFF;
            --accent-red: #9C3D2E;
            --gray: #6B7178;
            --border: #E2DDD5;
            --container-w: 1200px;
            --radius: 2px;
            --shadow-hover: 0 12px 24px rgba(22, 24, 29, 0.08);
            --ease: 300ms ease;
        }
        html {
            scroll-behavior: smooth;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html, body {
            max-width: 100%;
            overflow-x: hidden;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--paper);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        .num {
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            font-weight: 600;
        }
        .container-wide {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--ease);
        }
        img {
            max-width: 100%;
            height: auto;
            object-fit: cover;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input:focus,
        button:focus,
        a:focus {
            outline: 2px solid var(--copper);
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-block;
            background-color: var(--ink);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius);
            transition: background-color var(--ease), transform var(--ease);
        }
        .btn-primary:hover {
            background-color: var(--copper);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: none;
            background-color: var(--copper-dark);
        }
        .btn-outline {
            display: inline-block;
            border: 1px solid var(--ink);
            color: var(--ink);
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius);
            background: transparent;
            transition: all var(--ease);
        }
        .btn-outline:hover {
            background-color: var(--ink);
            color: #fff;
        }
        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--ink);
            border: 1px solid var(--ink);
            border-radius: 999px;
            padding: 4px 12px;
            transition: all var(--ease);
        }
        .badge-copper {
            color: var(--copper);
            border-color: var(--copper);
        }
        .top-strip {
            background-color: var(--ink);
            color: #fff;
            font-size: 13px;
            letter-spacing: 0.08em;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            white-space: nowrap;
        }
        .top-strip span {
            animation: marquee 22s linear infinite;
        }
        @keyframes marquee {
            0% { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }
        .site-header {
            height: 72px;
            background-color: var(--paper);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .site-header .nav-wrap {
            position: relative;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-header .logo-center {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 22px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--ink);
            white-space: nowrap;
        }
        .site-header .logo-center span {
            color: var(--copper);
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-left a,
        .nav-right a {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            position: relative;
            padding-bottom: 4px;
            white-space: nowrap;
        }
        .nav-left a::after,
        .nav-right a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width var(--ease);
        }
        .nav-left a:hover::after,
        .nav-right a:hover::after,
        .nav-left a.active::after,
        .nav-right a.active::after {
            width: 100%;
        }
        .nav-left a.active,
        .nav-right a.active {
            color: var(--copper);
        }
        .nav-cta a {
            background-color: var(--ink);
            color: #fff !important;
            padding: 8px 20px;
            border-radius: 2px;
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            transition: background var(--ease), transform var(--ease);
        }
        .nav-cta a::after {
            display: none;
        }
        .nav-cta a:hover {
            background-color: var(--copper);
            transform: translateY(-2px);
        }
        .mobile-toggle {
            display: none;
            font-size: 24px;
            color: var(--ink);
            background: none;
            border: none;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background-color: var(--ink);
            z-index: 200;
            padding: 32px 24px;
            flex-direction: column;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 24px;
            font-weight: 700;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-menu .close-menu {
            align-self: flex-end;
            font-size: 28px;
            color: #fff;
            margin-bottom: 16px;
        }
        .hero {
            background-color: var(--ink);
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(22, 24, 29, 0.92) 30%, rgba(22, 24, 29, 0.45) 100%), url('/assets/images/backpic/back-1.png') center center/cover;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 96px 24px;
        }
        .hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: #fff;
        }
        .hero .sub {
            font-size: 14px;
            line-height: 1.8;
            color: #B8BDBF;
            margin-top: 20px;
            max-width: 460px;
        }
        .hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-top: 32px;
        }
        .hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
        }
        .hero .stat .n {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            font-family: "Inter", sans-serif;
        }
        .hero .stat .l {
            font-size: 13px;
            color: #B8BDBF;
            display: block;
        }
        .scroll-hint {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            color: #B8BDBF;
            font-size: 12px;
            letter-spacing: 0.12em;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            z-index: 3;
        }
        .scroll-hint .line {
            width: 1px;
            height: 48px;
            background: linear-gradient(to bottom, var(--copper), rgba(169, 126, 92, 0));
            animation: scrollLine 2s ease-in-out infinite;
        }
        @keyframes scrollLine {
            0% { transform: scaleY(0); transform-origin: top; }
            50% { transform: scaleY(1); transform-origin: top; }
            51% { transform-origin: bottom; }
            100% { transform: scaleY(0); transform-origin: bottom; }
        }
        .section {
            padding: 96px 0;
        }
        .section-tight {
            padding: 64px 0;
        }
        .section-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            padding-left: 16px;
            border-left: 2px solid var(--copper);
        }
        .section-head .desc {
            font-size: 14px;
            color: var(--gray);
            max-width: 400px;
        }
        .catalog-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .catalog-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 2px;
            padding: 32px;
            transition: transform var(--ease), box-shadow var(--ease);
            position: relative;
        }
        .catalog-card::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width var(--ease);
        }
        .catalog-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .catalog-card:hover::after {
            width: 100%;
        }
        .catalog-card .idx {
            font-family: "Inter", sans-serif;
            font-size: 40px;
            font-weight: 700;
            color: #d8d4cd;
            transition: color var(--ease);
            display: block;
            margin-bottom: 12px;
        }
        .catalog-card:hover .idx {
            color: var(--copper);
        }
        .catalog-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .catalog-card .count {
            font-size: 13px;
            color: var(--gray);
        }
        .feature-row-1 {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
            margin-bottom: 24px;
            align-items: stretch;
        }
        .feature-card-large {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 2px;
            overflow: hidden;
            transition: transform var(--ease), box-shadow var(--ease);
        }
        .feature-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card-large .cover {
            height: 100%;
            min-height: 260px;
            overflow: hidden;
        }
        .feature-card-large .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 500ms ease;
        }
        .feature-card-large:hover .cover img {
            transform: scale(1.02);
        }
        .feature-card-large .body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-card-large .body h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 12px 0 12px;
        }
        .feature-card-large .body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--gray);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .meta-date {
            font-size: 13px;
            font-family: "Inter", sans-serif;
            color: var(--copper);
        }
        .link-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            border-bottom: 1px solid transparent;
            transition: color var(--ease), border-color var(--ease);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .link-more .arrow {
            transition: transform var(--ease);
        }
        .link-more:hover {
            color: var(--copper);
        }
        .link-more:hover .arrow {
            transform: translateX(4px);
        }
        .stack-cards {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .feature-card-small {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 2px;
            padding: 24px;
            flex: 1;
            transition: transform var(--ease), box-shadow var(--ease);
            display: flex;
            flex-direction: column;
        }
        .feature-card-small:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card-small h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 10px 0 8px;
        }
        .feature-card-small p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-row-2 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }
        .feature-card-mid {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 2px;
            overflow: hidden;
            transition: transform var(--ease), box-shadow var(--ease);
        }
        .feature-card-mid .cover {
            height: 180px;
            overflow: hidden;
        }
        .feature-card-mid .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 500ms ease;
        }
        .feature-card-mid:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card-mid:hover .cover img {
            transform: scale(1.02);
        }
        .feature-card-mid .body {
            padding: 24px;
        }
        .feature-card-mid .body h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 12px 0 8px;
        }
        .feature-card-mid .body p {
            font-size: 14px;
            color: var(--gray);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-card-mid.dark {
            background: var(--ink);
            border-color: var(--ink);
        }
        .feature-card-mid.dark .body h3 {
            color: #fff;
        }
        .feature-card-mid.dark .body p {
            color: #B8BDBF;
        }
        .feature-card-mid.dark .meta-date {
            color: var(--copper);
        }
        .feature-card-mid.dark .link-more {
            color: #fff;
        }
        .feature-card-mid.dark .link-more:hover {
            color: var(--copper);
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
        }
        .hot-topics {
            border-top: 2px solid var(--ink);
        }
        .hot-topic-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: padding var(--ease);
        }
        .hot-topic-item:hover {
            padding-left: 8px;
        }
        .hot-topic-item .t {
            font-size: 16px;
            font-weight: 600;
        }
        .hot-topic-item .n {
            font-family: "Inter", sans-serif;
            font-size: 18px;
            color: var(--copper);
            margin-right: 16px;
        }
        .hot-topic-item .arrow {
            transition: transform var(--ease);
            color: var(--gray);
        }
        .hot-topic-item:hover .arrow {
            transform: rotate(45deg);
            color: var(--copper);
        }
        .editors-pick {
            display: flex;
            flex-direction: column;
            border-top: 2px solid var(--ink);
        }
        .pick-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: background var(--ease);
        }
        .pick-item:hover {
            background: rgba(255, 255, 255, 0.6);
        }
        .pick-thumb {
            width: 64px;
            height: 64px;
            border-radius: 2px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .pick-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .pick-item .info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .pick-item .info .d {
            font-size: 13px;
            color: var(--gray);
        }
        .cms-section {
            background: #EDE8E0;
        }
        .cms-list {
            display: flex;
            flex-direction: column;
        }
        .cms-item {
            display: flex;
            align-items: center;
            gap: 32px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 2px;
            padding: 24px 32px;
            margin-bottom: 16px;
            transition: transform var(--ease), box-shadow var(--ease);
        }
        .cms-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .cms-date {
            text-align: center;
            min-width: 72px;
            border-right: 2px solid var(--border);
            padding-right: 24px;
        }
        .cms-date .day {
            font-family: "Inter", sans-serif;
            font-size: 28px;
            font-weight: 800;
            color: var(--copper);
            line-height: 1;
        }
        .cms-date .mon {
            font-size: 13px;
            color: var(--gray);
            text-transform: uppercase;
            display: block;
            margin-top: 4px;
        }
        .cms-info {
            flex: 1;
        }
        .cms-info h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .cms-info h3 a:hover {
            color: var(--copper);
        }
        .cms-info .summary {
            font-size: 14px;
            color: var(--gray);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 720px;
        }
        .cms-cat {
            font-size: 12px;
            color: var(--copper);
            border: 1px solid var(--copper);
            border-radius: 999px;
            padding: 2px 10px;
            margin-right: 12px;
            white-space: nowrap;
        }
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            color: var(--gray);
            font-size: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 2px;
        }
        .faq-section {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 64px;
        }
        .faq-left h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
        }
        .faq-left .desc {
            font-size: 14px;
            color: var(--gray);
            margin-top: 16px;
            line-height: 1.8;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            padding: 20px 0;
            cursor: pointer;
            transition: color var(--ease);
        }
        .faq-q .icon {
            font-family: "Inter", sans-serif;
            font-size: 22px;
            color: var(--copper);
            transition: transform var(--ease);
            margin-left: 16px;
        }
        .faq-item.open .icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .faq-a p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--gray);
            padding: 0 0 20px;
        }
        .cta-band {
            background: linear-gradient(rgba(22, 24, 29, 0.9), rgba(22, 24, 29, 0.92)), url('/assets/images/backpic/back-2.png') center/cover;
            padding: 96px 0;
            color: #fff;
            text-align: center;
        }
        .cta-band h2 {
            font-size: 32px;
            font-weight: 800;
        }
        .cta-band p {
            color: #B8BDBF;
            font-size: 14px;
            max-width: 600px;
            margin: 16px auto 32px;
        }
        .btn-light {
            background-color: #fff;
            color: var(--ink);
            display: inline-block;
            padding: 14px 32px;
            font-weight: 700;
            font-size: 14px;
            border-radius: 2px;
            transition: background var(--ease), color var(--ease), transform var(--ease);
        }
        .btn-light:hover {
            background-color: var(--copper);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer {
            background-color: var(--paper);
            border-top: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 48px;
            padding: 64px 0 48px;
        }
        .footer-brand .logo {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
        }
        .footer-brand .logo span {
            color: var(--copper);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--gray);
            margin-bottom: 20px;
            max-width: 280px;
        }
        .social-links {
            display: flex;
            gap: 12px;
        }
        .social-links a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 2px;
            color: var(--ink);
            transition: all var(--ease);
        }
        .social-links a:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--ink);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--gray);
            padding: 6px 0;
            transition: color var(--ease);
        }
        .footer-col a:hover {
            color: var(--copper);
        }
        .footer-watermark {
            position: absolute;
            right: -20px;
            bottom: -40px;
            font-size: 180px;
            font-weight: 900;
            color: rgba(22, 24, 29, 0.05);
            pointer-events: none;
            line-height: 1;
            white-space: nowrap;
        }
        .copyright-bar {
            background-color: var(--ink);
            padding: 20px 24px;
            text-align: center;
            color: #B8BDBF;
            font-size: 13px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .copyright-bar a {
            color: #B8BDBF;
        }
        .copyright-bar a:hover {
            color: #fff;
        }
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 600ms ease, transform 600ms ease;
        }
        .reveal.in-view {
            opacity: 1;
            transform: none;
        }
        @media (max-width: 1024px) {
            .catalog-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-row-1 {
                grid-template-columns: 1fr;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .faq-section {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 80px 24px;
            }
            .feature-row-2 {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-toggle {
                display: block;
                z-index: 10;
            }
            .site-header .logo-center {
                left: 50%;
                transform: translateX(-50%);
                position: absolute;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .hero h1 {
                font-size: 32px;
            }
            .feature-row-1 {
                grid-template-columns: 1fr;
            }
            .feature-card-large {
                grid-template-columns: 1fr;
            }
            .feature-card-large .cover {
                height: 200px;
            }
            .feature-row-2 {
                grid-template-columns: 1fr;
            }
            .cms-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }
            .cms-date {
                border-right: none;
                padding-right: 0;
                border-bottom: 1px solid var(--border);
                padding-bottom: 8px;
                min-width: auto;
                text-align: left;
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                padding: 32px 0;
            }
            .catalog-grid {
                grid-template-columns: 1fr;
            }
            .cta-band h2 {
                font-size: 24px;
            }
            .top-strip span {
                animation-duration: 12s;
            }
        }
        @media (max-width: 520px) {
            .container-wide {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-content {
                padding: 64px 16px;
            }
            .hero .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .section-head {
                flex-direction: column;
                gap: 12px;
            }
            .feature-card-large .body {
                padding: 20px;
            }
            .scroll-hint {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --primary: #16181D;
            --accent: #A97E5C;
            --accent-dark: #8E644A;
            --bg: #F4F1EC;
            --card: #FFFFFF;
            --danger: #9C3D2E;
            --gray: #6B7178;
            --border: #E2DDD5;
            --radius: 2px;
            --shadow: 0 12px 24px rgba(22, 24, 29, 0.08);
            --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
            --container: 1200px;
            --space: 96px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background-color: var(--bg);
            color: var(--primary);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        .container-wide {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 公告条 */
        .notice-bar {
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            letter-spacing: .06em;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            white-space: nowrap;
        }
        .notice-bar span {
            display: inline-block;
            animation: marquee 20s linear infinite;
        }
        @keyframes marquee {
            0% { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(244, 241, 236, .94);
            backdrop-filter: blur(12px);
            height: 72px;
            border-bottom: 1px solid var(--border);
        }
        .site-header .nav-wrap {
            position: relative;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-header .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -.01em;
            color: var(--primary);
            white-space: nowrap;
            z-index: 2;
        }
        .site-header .logo span {
            font-weight: 400;
            color: var(--accent);
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-left a,
        .nav-right a {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            position: relative;
            padding: 4px 0;
        }
        .nav-left a::after,
        .nav-right a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            height: 2px;
            width: 0;
            background: var(--accent);
            transition: width .3s ease;
        }
        .nav-left a:hover::after,
        .nav-left a.active::after,
        .nav-right a:hover::after,
        .nav-right a.active::after {
            width: 100%;
        }
        .nav-left a.active,
        .nav-right a.active {
            font-weight: 600;
        }
        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            background: var(--primary);
            color: #fff !important;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 22px;
            border-radius: 2px;
            transition: all .3s ease;
            border: 1px solid var(--primary);
        }
        .btn-primary-sm:hover {
            background: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: var(--primary);
            z-index: 200;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity .3s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 24px;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .mobile-menu .close-btn {
            position: absolute;
            top: 20px;
            right: 28px;
            color: #fff;
            font-size: 30px;
            background: none;
            border: none;
            cursor: pointer;
        }

        /* 文章横幅 */
        .article-banner {
            position: relative;
            min-height: 320px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            color: #fff;
            padding: 70px 0 50px;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(22, 24, 29, .94) 20%, rgba(22, 24, 29, .72) 80%);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .breadcrumb {
            display: flex;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .9);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-banner h1 {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -.01em;
            max-width: 780px;
            margin-bottom: 18px;
        }
        .article-banner .meta-row {
            display: flex;
            gap: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            letter-spacing: .04em;
            flex-wrap: wrap;
        }
        .article-banner .meta-row i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* 正文双栏 */
        .article-main {
            display: grid;
            grid-template-columns: 66% 34%;
            gap: 48px;
            padding: 64px 32px 96px;
            max-width: var(--container);
            margin: 0 auto;
        }
        .article-content {
            min-width: 0;
        }
        .article-hero-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: 2px;
            margin-bottom: 40px;
            background: #EDE8E0;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--primary);
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body p:first-of-type::first-letter {
            font-size: 48px;
            font-weight: 700;
            float: left;
            line-height: 1;
            padding-right: 10px;
            padding-top: 4px;
            color: var(--accent);
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 40px 0 16px;
            line-height: 1.4;
            border-left: 3px solid var(--accent);
            padding-left: 16px;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 700;
            margin: 28px 0 12px;
        }
        .article-body img {
            border-radius: 2px;
            margin: 24px 0;
        }
        .article-body blockquote {
            border-left: 3px solid var(--accent);
            background: #EDE8E0;
            padding: 24px;
            margin: 32px 0;
            font-style: italic;
            font-size: 16px;
            color: var(--gray);
            border-radius: 0 2px 2px 0;
        }
        .article-body ul {
            margin: 16px 0 24px;
            padding-left: 24px;
        }
        .article-body ul li {
            margin-bottom: 10px;
            position: relative;
        }
        .article-body ul li::before {
            content: '';
            position: absolute;
            left: -14px;
            top: 10px;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }
        .article-body a {
            color: var(--accent);
            border-bottom: 1px solid var(--accent);
        }
        .article-body a:hover {
            color: var(--accent-dark);
            border-bottom-color: var(--accent-dark);
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 2px;
            padding: 28px;
        }
        .sidebar-card h4 {
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .04em;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card h4::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 36px;
            height: 2px;
            background: var(--accent);
        }
        .toc-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .toc-list li {
            border-bottom: 1px solid var(--border);
        }
        .toc-list li:last-child {
            border-bottom: none;
        }
        .toc-list a {
            display: block;
            padding: 12px 4px;
            font-size: 14px;
            color: var(--gray);
            line-height: 1.5;
            transition: all .3s ease;
        }
        .toc-list a:hover {
            color: var(--accent);
            padding-left: 10px;
            font-weight: 600;
        }
        .about-mini {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .about-mini .logo-box {
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            border-radius: 4px;
            flex-shrink: 0;
        }
        .about-mini-text p {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.7;
            margin: 4px 0 10px;
        }
        .about-mini-text a {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
        }
        .about-mini-text a:hover {
            color: var(--accent-dark);
        }
        .related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .related-list li {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .related-list li:last-child {
            border-bottom: none;
        }
        .related-list img {
            width: 48px;
            height: 48px;
            border-radius: 2px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .related-list .info a {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-list .info a:hover {
            color: var(--accent);
        }
        .related-list .info span {
            font-size: 12px;
            color: var(--gray);
            display: block;
            margin-top: 4px;
        }

        /* 上一篇/下一篇 */
        .post-nav {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px 64px;
        }
        .post-nav .inner {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 32px 0;
        }
        .post-nav .prev,
        .post-nav .next {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .post-nav .prev {
            align-items: flex-start;
        }
        .post-nav .next {
            align-items: flex-end;
        }
        .post-nav .label {
            font-size: 12px;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--gray);
        }
        .post-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            transition: color .3s ease;
        }
        .post-nav a:hover {
            color: var(--accent);
        }
        .post-nav .back-center {
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 26px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: all .3s ease;
            white-space: nowrap;
        }
        .post-nav .back-center:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 收藏按钮 */
        .fav-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--border);
            background: transparent;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border-radius: 2px;
            cursor: pointer;
            transition: all .3s ease;
            margin-top: 24px;
        }
        .fav-btn:hover {
            border-color: var(--danger);
            color: var(--danger);
        }
        .fav-btn i {
            font-size: 13px;
        }
        .fav-btn.faved {
            border-color: var(--danger);
            color: var(--danger);
        }

        /* CTA */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
            padding: 72px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .18;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -.01em;
            line-height: 1.3;
            max-width: 560px;
        }
        .cta-section .cta-btn {
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 2px;
            transition: all .3s ease;
            white-space: nowrap;
            border: 1px solid #fff;
        }
        .cta-section .cta-btn:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            position: relative;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding: 64px 0 48px;
        }
        .footer-brand .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .footer-brand .logo span {
            font-weight: 400;
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 20px;
        }
        .social-links {
            display: flex;
            gap: 12px;
        }
        .social-links a {
            width: 38px;
            height: 38px;
            border: 1px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gray);
            font-size: 14px;
            transition: all .3s ease;
        }
        .social-links a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .06em;
            margin-bottom: 20px;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--gray);
            padding: 6px 0;
            transition: color .3s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-col p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.8;
        }
        .footer-watermark {
            position: absolute;
            right: 0;
            bottom: 40px;
            font-size: 180px;
            font-weight: 900;
            color: rgba(22, 24, 29, .04);
            line-height: 1;
            pointer-events: none;
            user-select: none;
            z-index: 0;
        }
        .copyright-bar {
            background: var(--primary);
            color: rgba(255, 255, 255, .8);
            padding: 16px 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            flex-wrap: wrap;
        }
        .copyright-bar span:last-child {
            font-family: var(--font-num);
            opacity: .6;
        }

        /* 空状态 */
        .not-found-wrap {
            padding: 120px 0;
            text-align: center;
            background: var(--bg);
        }
        .not-found-wrap .empty-icon {
            width: 80px;
            height: 80px;
            border: 1px solid var(--border);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: var(--gray);
            margin: 0 auto 24px;
            background: var(--card);
        }
        .not-found-wrap h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: var(--gray);
            margin-bottom: 32px;
        }
        .not-found-wrap .back-home {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 2px;
            font-weight: 600;
            transition: all .3s ease;
        }
        .not-found-wrap .back-home:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .nav-left a,
            .nav-right a {
                font-size: 13px;
                gap: 20px;
            }
            .nav-left,
            .nav-right {
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .article-main {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-sidebar .sidebar-card:first-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 767px) {
            .container-wide,
            .container,
            .article-main,
            .post-nav,
            .cta-section .cta-inner {
                padding-left: 20px;
                padding-right: 20px;
            }
            .site-header .nav-wrap {
                justify-content: flex-end;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .site-header .logo {
                left: 20px;
                transform: none;
                font-size: 17px;
            }
            .article-banner {
                min-height: 260px;
                padding: 50px 0 40px;
            }
            .article-banner h1 {
                font-size: 28px;
                line-height: 1.3;
            }
            .article-banner .meta-row {
                font-size: 12px;
                gap: 14px;
            }
            .article-main {
                padding-top: 40px;
                padding-bottom: 64px;
            }
            .article-hero-img {
                margin-bottom: 28px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h3 {
                font-size: 19px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .post-nav .inner {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .post-nav .prev,
            .post-nav .next {
                align-items: center;
            }
            .post-nav .back-center {
                order: -1;
                justify-self: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-watermark {
                font-size: 90px;
                bottom: 20px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-section .cta-btn {
                width: 100%;
                text-align: center;
            }
        }

.fade-target {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity .6s ease, transform .6s ease;
        }
        .fade-target.in-view {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
:root {
            --primary: #16181D;
            --accent: #A97E5C;
            --accent-dark: #8E644A;
            --bg: #F4F1EC;
            --card-bg: #FFFFFF;
            --danger: #9C3D2E;
            --gray: #6B7178;
            --border: #E2DDD5;
            --radius: 2px;
            --shadow: 0 12px 24px rgba(22, 24, 29, 0.08);
            --container: 1200px;
            --ft-title: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --ft-num: "Inter", "Helvetica Neue", Arial;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--ft-title);
            background: var(--bg);
            color: var(--primary);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        button {
            font-family: var(--ft-title);
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: var(--ft-title);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .container-wide {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }
        .section-pad {
            padding: 96px 0;
        }
        @media (max-width: 767px) {
            .section-pad {
                padding: 56px 0;
            }
            .container-wide {
                padding: 0 20px;
            }
        }
        h1,
        h2,
        h3 {
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: 32px;
            font-weight: 800;
            padding-left: 14px;
            border-left: 2px solid var(--accent);
            margin-bottom: 48px;
        }
        @media (max-width: 767px) {
            h2 {
                font-size: 24px;
                margin-bottom: 32px;
            }
        }
        h3 {
            font-size: 22px;
            font-weight: 700;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .section-head p {
            font-size: 14px;
            color: var(--gray);
            max-width: 420px;
            line-height: 1.7;
        }
        /* 顶部公告条 */
        .top-bar {
            height: 32px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            letter-spacing: 0.08em;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 48px;
            padding: 0 16px;
            overflow: hidden;
            white-space: nowrap;
        }
        .top-bar .tb-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .top-bar .tb-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }
        /* 主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .nav-container {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }
        .site-header .logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1001;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--primary);
            white-space: nowrap;
        }
        .site-header .logo span {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-left a,
        .nav-right a:not(.btn-nav) {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            position: relative;
            padding: 4px 0;
        }
        .nav-left a::after,
        .nav-right a:not(.btn-nav)::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        .nav-left a:hover::after,
        .nav-left a.active::after,
        .nav-right a:not(.btn-nav):hover::after,
        .nav-right a.active::after {
            width: 100%;
        }
        .nav-left a.active,
        .nav-right a.active {
            color: var(--accent);
        }
        .nav-right .btn-nav {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius);
            transition: all 0.3s ease;
        }
        .nav-right .btn-nav:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
        }
        /* 移动导航 */
        @media (max-width: 1023px) {
            .nav-left {
                gap: 20px;
            }
            .nav-right {
                gap: 20px;
            }
        }
        @media (max-width: 767px) {
            .top-bar .tb-item:last-child {
                display: none;
            }
            .nav-container {
                height: 64px;
                padding: 0 20px;
            }
            .site-header .logo {
                font-size: 18px;
                left: 20px;
                transform: none;
            }
            .nav-left,
            .nav-right {
                position: fixed;
                left: 0;
                width: 100%;
                height: 50vh;
                background: var(--primary);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 22px;
                z-index: 1000;
                display: none;
                transition: all 0.3s ease;
            }
            .nav-left {
                top: 0;
                padding-top: 40px;
            }
            .nav-right {
                bottom: 0;
                padding-bottom: 40px;
            }
            .nav-left a,
            .nav-right a:not(.btn-nav) {
                color: #fff;
                font-size: 24px;
                font-weight: 600;
            }
            .nav-left a::after,
            .nav-right a:not(.btn-nav)::after {
                background: var(--accent);
            }
            .nav-right .btn-nav {
                background: transparent;
                border: 1px solid var(--accent);
                color: var(--accent);
                font-size: 18px;
                padding: 10px 28px;
                margin-top: 8px;
            }
            .nav-right .btn-nav:hover {
                background: var(--accent);
                color: #fff;
            }
            .nav-toggle {
                display: flex;
                flex-direction: column;
                gap: 5px;
                margin-left: auto;
                z-index: 1001;
                position: relative;
            }
            .nav-toggle span {
                width: 24px;
                height: 2px;
                background: var(--primary);
                transition: all 0.3s ease;
            }
            .nav-container.nav-open .nav-toggle span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
                background: var(--accent);
            }
            .nav-container.nav-open .nav-toggle span:nth-child(2) {
                opacity: 0;
            }
            .nav-container.nav-open .nav-toggle span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
                background: var(--accent);
            }
            .nav-container.nav-open .nav-left,
            .nav-container.nav-open .nav-right {
                display: flex;
            }
            .nav-container.nav-open .logo {
                color: var(--accent);
                z-index: 1002;
            }
        }
        /* Hero 区块 */
        .cate-hero {
            padding: 72px 0 64px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .cate-hero .hero-grid {
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 64px;
            align-items: center;
        }
        .hero-kicker {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.1em;
            color: var(--accent);
            font-weight: 600;
            border: 1px solid var(--accent);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 20px;
        }
        .cate-hero h1 {
            font-size: 30px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }
        .cate-hero .hero-desc {
            font-size: 15px;
            color: var(--gray);
            line-height: 1.8;
            max-width: 480px;
            margin-bottom: 24px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-count {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: 999px;
            padding: 4px 14px;
        }
        .hero-count i {
            color: var(--accent);
            font-size: 12px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--accent);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            background: var(--accent-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius);
            border: 1px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .hero-img-wrap {
            position: relative;
        }
        .hero-img-wrap img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .hero-img-wrap::before {
            content: "";
            position: absolute;
            top: -12px;
            right: -12px;
            width: 100%;
            height: 100%;
            border: 1px solid var(--accent);
            border-radius: var(--radius);
            z-index: -1;
        }
        @media (max-width: 1023px) {
            .cate-hero .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-img-wrap {
                max-width: 480px;
            }
        }
        @media (max-width: 767px) {
            .cate-hero {
                padding: 48px 0 40px;
            }
            .cate-hero h1 {
                font-size: 26px;
            }
            .cate-hero .hero-desc {
                font-size: 14px;
            }
        }
        /* 数据统计 */
        .stats-band {
            background: var(--primary);
            padding: 48px 0;
            color: #fff;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }
        .stat-item .stat-num {
            font-family: var(--ft-num);
            font-size: 42px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: #B8BDBF;
            letter-spacing: 0.08em;
            margin-top: 8px;
        }
        @media (max-width: 767px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .stat-item .stat-num {
                font-size: 32px;
            }
        }
        /* 核心卖点 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .feature-card .feat-num {
            font-family: var(--ft-num);
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }
        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }
        @media (max-width: 1023px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 适用场景 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .scenario-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 32px;
            transition: all 0.3s ease;
        }
        .scenario-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .scenario-item .scenario-tag {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
            border: 1px solid var(--accent);
            border-radius: 999px;
            padding: 2px 10px;
            display: inline-block;
            margin-bottom: 14px;
        }
        .scenario-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }
        @media (max-width: 767px) {
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 合作流程 */
        .process-section {
            background: var(--primary);
            color: #fff;
        }
        .process-section h2 {
            border-left-color: var(--accent);
            color: #fff;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            counter-reset: process;
        }
        .process-step {
            position: relative;
            padding-top: 20px;
        }
        .process-step::before {
            counter-increment: process;
            content: "0" counter(process);
            font-family: var(--ft-num);
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            display: block;
            margin-bottom: 14px;
        }
        .process-step::after {
            content: "";
            position: absolute;
            top: 26px;
            left: -24px;
            width: 16px;
            height: 1px;
            background: var(--accent);
            opacity: 0.5;
        }
        .process-step:first-child::after {
            display: none;
        }
        .process-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13px;
            color: #B8BDBF;
            line-height: 1.7;
        }
        @media (max-width: 1023px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-step::after {
                display: none;
            }
        }
        @media (max-width: 767px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }
        /* 案例展示 */
        .cases-section {
            background: var(--bg);
        }
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 40px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .filter-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-btn {
            font-size: 13px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: transparent;
            color: var(--gray);
            transition: all 0.3s ease;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .filter-search {
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 4px;
            transition: border-color 0.3s ease;
            min-width: 220px;
        }
        .filter-search:focus-within {
            border-bottom: 1px solid var(--accent);
        }
        .filter-search input {
            border: none;
            background: transparent;
            font-size: 14px;
            padding: 6px 0;
            width: 100%;
            color: var(--primary);
            outline: none;
        }
        .filter-search input::placeholder {
            color: #A0A5AB;
        }
        .filter-search i {
            color: var(--gray);
            font-size: 14px;
        }
        /* 案例行 */
        .case-list {
            display: flex;
            flex-direction: column;
        }
        .case-row {
            display: grid;
            grid-template-columns: 40% 1fr;
            gap: 40px;
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
            align-items: center;
        }
        .case-row:last-child {
            border-bottom: none;
        }
        .case-row:nth-child(even) .case-img {
            order: 2;
        }
        .case-row:nth-child(even) .case-content {
            order: 1;
        }
        .case-img {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .case-img img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-img:hover img {
            transform: scale(1.02);
        }
        .case-index {
            font-family: var(--ft-num);
            font-size: 48px;
            font-weight: 600;
            color: #E0DCD4;
            line-height: 1;
            margin-bottom: 8px;
        }
        .case-content .case-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--gray);
            margin-bottom: 12px;
        }
        .case-content .case-meta span {
            font-family: var(--ft-num);
            color: var(--accent);
        }
        .case-content h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .case-content p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .case-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }
        .case-link i {
            transition: transform 0.3s ease;
        }
        .case-link:hover {
            color: var(--accent);
        }
        .case-link:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 767px) {
            .case-row {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .case-row:nth-child(even) .case-img {
                order: 1;
            }
            .case-row:nth-child(even) .case-content {
                order: 2;
            }
            .case-index {
                font-size: 36px;
            }
        }
        /* 分页器 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
        }
        .pagination a,
        .pagination span {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--border);
            color: var(--primary);
            transition: all 0.3s ease;
        }
        .pagination a:hover {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        /* 相关专题 */
        .related-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            border-left: 1px solid var(--border);
        }
        .related-item {
            padding: 28px 24px;
            border-right: 1px solid var(--border);
            border-top: 3px solid transparent;
            transition: all 0.3s ease;
        }
        .related-item:hover {
            border-top-color: var(--accent);
            background: #FAF8F5;
        }
        .related-item .related-num {
            font-family: var(--ft-num);
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }
        .related-item h3 {
            font-size: 17px;
            margin-bottom: 10px;
        }
        .related-item p {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .related-item .related-arrow {
            font-size: 14px;
            color: var(--primary);
            transition: all 0.3s ease;
        }
        .related-item:hover .related-arrow {
            color: var(--accent);
            transform: rotate(45deg);
            display: inline-block;
        }
        @media (max-width: 767px) {
            .related-grid {
                grid-template-columns: 1fr;
                border-left: none;
            }
            .related-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
            }
            .related-item:last-child {
                border-bottom: none;
            }
        }
        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: 30% 70%;
            gap: 60px;
        }
        .faq-left h2 {
            margin-bottom: 16px;
        }
        .faq-left p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            padding: 20px 0;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .faq-q .faq-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item.open .faq-q {
            color: var(--accent);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-a-inner {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            padding-bottom: 20px;
        }
        @media (max-width: 1023px) {
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        /* CTA */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cta-inner h2 {
            color: #fff;
            border-left-color: var(--accent);
            margin-bottom: 12px;
            padding-left: 14px;
        }
        .cta-inner p {
            color: #B8BDBF;
            font-size: 14px;
            max-width: 480px;
        }
        .cta-btn {
            background: #fff;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }
        .cta-btn:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        /* 页脚 */
        .site-footer {
            background: var(--bg);
            border-top: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding: 64px 0 48px;
        }
        .footer-brand .logo {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .footer-brand .logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .social-links {
            display: flex;
            gap: 12px;
        }
        .social-links a {
            width: 36px;
            height: 36px;
            border: 1px solid var(--border);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--gray);
            font-size: 14px;
            transition: all 0.3s ease;
        }
        .social-links a:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--gray);
            padding: 4px 0;
            transition: color 0.3s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-watermark {
            position: absolute;
            right: -20px;
            bottom: 40px;
            font-size: 180px;
            font-weight: 900;
            color: var(--primary);
            opacity: 0.04;
            line-height: 1;
            pointer-events: none;
            white-space: nowrap;
            user-select: none;
            z-index: 0;
        }
        .copyright-bar {
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 32px;
            flex-wrap: wrap;
            gap: 8px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .copyright-bar {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }
        }
        /* 动画 */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.in-view {
            opacity: 1;
            transform: translateY(0);
        }
        @keyframes scrollLine {
            0% {
                transform: translateY(-8px);
                opacity: 0;
            }
            50% {
                transform: translateY(0);
                opacity: 1;
            }
            100% {
                transform: translateY(8px);
                opacity: 0;
            }
        }
        .scroll-indicator {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            letter-spacing: 0.1em;
            color: var(--gray);
        }
        .scroll-indicator .line {
            width: 1px;
            height: 20px;
            background: var(--accent);
            animation: scrollLine 1.5s infinite;
        }

/* roulang page: category2 */
:root {
    --ink: #16181D;
    --bronze: #A97E5C;
    --bronze-dark: #8E644A;
    --paper: #F4F1EC;
    --card-bg: #FFFFFF;
    --line: #E2DDD5;
    --gray: #6B7178;
    --accent: #9C3D2E;
    --radius: 2px;
    --shadow: 0 12px 24px rgba(22, 24, 29, 0.08);
    --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
    --max-width: 1200px;
    --transition: 300ms ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
    object-fit: cover;
    background: var(--line) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 24 24' fill='none' stroke='%23A97E5C' stroke-width='1'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center / 40px no-repeat;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
input { font-family: inherit; }
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--bronze);
    outline-offset: 2px;
}

.container-wide {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* -------- 顶部公告条 -------- */
.top-bar {
    background: var(--ink);
    color: #fff;
    font-size: 12px;
    height: 32px;
    display: flex;
    align-items: center;
    letter-spacing: 0.04em;
}
.top-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
}
.top-bar-note {
    color: rgba(255, 255, 255, 0.65);
}

/* -------- 导航 -------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    height: 72px;
}
.nav-wrap {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}
.site-header .logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 22px;
    font-weight: 900;
    letter-spacing: -0.01em;
    white-space: nowrap;
    color: var(--ink);
}
.site-header .logo span {
    font-weight: 700;
    color: var(--bronze);
}
.nav-left, .nav-right {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-left a {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    position: relative;
    padding: 6px 2px;
    transition: color var(--transition);
}
.nav-left a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--bronze);
    transition: width var(--transition);
}
.nav-left a:hover::after,
.nav-left a.active::after { width: 100%; }
.nav-left a:hover,
.nav-left a.active { color: var(--bronze); }

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ink);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--radius);
    border: 1px solid var(--ink);
    cursor: pointer;
    transition: all var(--transition);
}
.btn-primary:hover {
    background: var(--bronze);
    border-color: var(--bronze);
    transform: translateY(-2px);
}
.btn-primary:active {
    transform: translateY(0);
    background: var(--bronze-dark);
    border-color: var(--bronze-dark);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    transition: transform 0.3s, opacity 0.3s;
}
.mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* -------- 移动端全屏菜单 -------- */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--ink);
    z-index: 300;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    transition: color var(--transition);
}
.mobile-menu a:hover,
.mobile-menu a.active { color: var(--bronze); }
.mobile-menu .btn-primary {
    margin-top: 12px;
    background: transparent;
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}
.mobile-menu .btn-primary:hover {
    background: var(--bronze);
    border-color: var(--bronze);
}
.mobile-close {
    position: absolute;
    top: 14px;
    right: 20px;
    font-size: 34px;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
}

/* -------- 通用区块 -------- */
.section { padding: 96px 0; }
.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--bronze);
    margin-bottom: 8px;
}
.section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    position: relative;
    padding-left: 12px;
    margin-bottom: 16px;
}
.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 2px;
    background: var(--bronze);
}
.section-desc {
    color: var(--gray);
    font-size: 15px;
    max-width: 560px;
    margin-bottom: 48px;
}

.badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--ink);
    border: 1px solid var(--ink);
    border-radius: 999px;
    padding: 4px 12px;
    letter-spacing: 0.06em;
}
.badge-outline {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px 12px;
}

/* -------- 分类 Hero -------- */
.cat-hero {
    padding: 80px 0 96px;
}
.cat-hero-inner {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 64px;
    align-items: center;
}
.cat-hero h1 {
    font-size: 30px;
    font-weight: 900;
    letter-spacing: -0.01em;
    line-height: 1.2;
    margin: 16px 0 12px;
}
.cat-hero-sub {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.8;
    max-width: 520px;
}
.cat-hero-meta {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}
.cat-hero-image img {
    width: 360px;
    height: 240px;
    object-fit: cover;
    border-radius: var(--radius);
    transition: transform 500ms ease;
}
.cat-hero-image:hover img { transform: scale(1.02); }
.img-caption {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-top: 12px;
    text-align: center;
    letter-spacing: 0.08em;
}

/* -------- 卖点 -------- */
.features-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
    margin-top: 48px;
}
.features-grid .feature-large { grid-column: 1; grid-row: 1 / span 2; }
.features-grid .feature-card:nth-child(2) { grid-column: 2; grid-row: 1; }
.features-grid .feature-card:nth-child(3) { grid-column: 2; grid-row: 2; }
.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.feature-large {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background:
        linear-gradient(rgba(255,255,255,0.9), rgba(255,255,255,0.94)),
        url('/assets/images/coverpic/cover-6.png') center / cover no-repeat;
}
.feature-num {
    font-family: var(--font-num);
    font-size: 18px;
    font-weight: 600;
    color: var(--bronze);
    margin-bottom: 24px;
    display: block;
}
.feature-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 15px; color: var(--gray); line-height: 1.8; }

/* -------- 场景 -------- */
.scene-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 48px;
}
.scene-card {
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px;
    transition: border-color var(--transition), background var(--transition);
}
.scene-card:hover {
    border-color: var(--bronze);
    background: #fff;
}
.scene-icon {
    width: 48px;
    height: 48px;
    border: 1px solid var(--ink);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 20px;
    background: #fff;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.scene-card:hover .scene-icon {
    background: var(--ink);
    color: #fff;
    border-color: var(--ink);
}
.scene-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--gray); line-height: 1.7; }

/* -------- 内容矩阵 -------- */
.matrix-list { margin-top: 48px; }
.matrix-item {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 28px 8px;
    border-bottom: 1px solid var(--line);
    transition: padding-left var(--transition);
}
.matrix-item:first-child { border-top: 1px solid var(--line); }
.matrix-item:hover { padding-left: 16px; }
.matrix-num {
    font-family: var(--font-num);
    font-size: 48px;
    font-weight: 600;
    color: #D8D4CD;
    width: 80px;
    line-height: 1;
    flex-shrink: 0;
}
.matrix-body { flex: 1; }
.matrix-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.matrix-body p { color: var(--gray); font-size: 15px; }
.matrix-arrow {
    font-size: 20px;
    color: var(--ink);
    transition: transform var(--transition), color var(--transition);
    flex-shrink: 0;
}
.matrix-item:hover .matrix-arrow {
    transform: rotate(45deg);
    color: var(--bronze);
}

/* -------- 深色价值区 -------- */
.value-section {
    background:
        linear-gradient(rgba(22,24,29,0.94), rgba(22,24,29,0.94)),
        url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    color: #fff;
    padding: 96px 0;
}
.value-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
}
.value-quote { flex: 1.2; }
.quote-mark {
    font-family: var(--font-num);
    font-size: 64px;
    line-height: 1;
    color: var(--bronze);
}
.value-quote p {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.7;
    max-width: 420px;
    margin-top: -12px;
}
.value-stats {
    display: flex;
    gap: 48px;
}
.stat-item { text-align: center; }
.stat-num {
    font-family: var(--font-num);
    font-size: 40px;
    font-weight: 600;
    color: #fff;
    display: block;
    line-height: 1.2;
}
.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.08em;
}

/* -------- FAQ -------- */
.faq-inner {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 64px;
}
.faq-intro {
    color: var(--gray);
    font-size: 14px;
    line-height: 1.7;
}
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    transition: color var(--transition);
}
.faq-q:hover { color: var(--bronze); }
.faq-icon {
    font-family: var(--font-num);
    font-size: 20px;
    color: var(--bronze);
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    transition: transform 0.3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.faq-a p {
    padding: 0 0 16px 36px;
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
}
.faq-item.open .faq-a { max-height: 300px; }

/* -------- CTA -------- */
.cta-section {
    background:
        linear-gradient(rgba(22,24,29,0.92), rgba(22,24,29,0.92)),
        url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    padding: 80px 0;
    color: #fff;
    text-align: center;
}
.cta-inner h2 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.01em;
}
.cta-inner p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 8px;
    font-size: 15px;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 28px;
}
.btn-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius);
    border: 1px solid #fff;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-light:hover {
    background: var(--bronze);
    border-color: var(--bronze);
    color: #fff;
    transform: translateY(-2px);
}
.btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all var(--transition);
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--ink);
    transform: translateY(-2px);
}

/* -------- 页脚 -------- */
.site-footer {
    background: var(--paper);
    border-top: 1px solid var(--line);
    position: relative;
    overflow: hidden;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding: 64px 0 48px;
}
.footer-brand .logo {
    position: static;
    transform: none;
    font-size: 20px;
    font-weight: 900;
    margin-bottom: 16px;
    color: var(--ink);
}
.footer-brand .logo span {
    color: var(--bronze);
    font-weight: 700;
}
.footer-brand p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 20px;
    max-width: 300px;
    line-height: 1.7;
}
.social-links {
    display: flex;
    gap: 12px;
}
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    border: 1px solid var(--line);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    background: #fff;
    transition: all var(--transition);
}
.social-icon:hover {
    background: var(--ink);
    color: #fff;
    border-color: var(--ink);
}
.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    color: var(--ink);
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--gray);
    padding: 4px 0;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--bronze); }
.footer-watermark {
    position: absolute;
    right: -20px;
    bottom: -40px;
    font-size: 180px;
    font-weight: 900;
    line-height: 1;
    color: rgba(22, 24, 29, 0.05);
    pointer-events: none;
    user-select: none;
    font-family: var(--font-cn);
}
.copyright-bar {
    background: var(--ink);
    color: #fff;
    font-size: 13px;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

/* -------- 滚动渐入 -------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* -------- 响应式 -------- */
@media (max-width: 1023px) {
    .cat-hero-inner {
        grid-template-columns: 1fr 280px;
        gap: 32px;
    }
    .cat-hero-image img {
        width: 280px;
        height: 200px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .footer-watermark {
        font-size: 120px;
        bottom: -20px;
    }
    .value-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .faq-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 767px) {
    .section { padding: 56px 0; }
    .site-header { height: 60px; }
    .nav-wrap { height: 60px; }
    .site-header .logo {
        position: static;
        transform: none;
        font-size: 18px;
    }
    .nav-left,
    .nav-cta { display: none; }
    .mobile-toggle { display: flex; }
    .nav-right {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .cat-hero {
        padding: 40px 0 56px;
    }
    .cat-hero-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .cat-hero-image { order: -1; }
    .cat-hero-image img {
        width: 100%;
        height: 220px;
    }
    .cat-hero h1 {
        font-size: 28px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .features-grid .feature-large {
        grid-column: 1;
        grid-row: auto;
        min-height: 260px;
    }
    .features-grid .feature-card:nth-child(2) {
        grid-column: 1;
        grid-row: auto;
    }
    .features-grid .feature-card:nth-child(3) {
        grid-column: 1;
        grid-row: auto;
    }
    .scene-grid {
        grid-template-columns: 1fr;
    }
    .matrix-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px 4px;
    }
    .matrix-num {
        font-size: 36px;
        width: auto;
    }
    .matrix-arrow { display: none; }
    .value-section { padding: 56px 0; }
    .value-stats {
        flex-direction: column;
        gap: 24px;
        width: 100%;
    }
    .stat-item {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        padding-bottom: 12px;
    }
    .stat-num { font-size: 28px; }
    .footer-grid {
        grid-template-columns: 1fr;
        padding: 48px 0 32px;
    }
    .footer-watermark {
        font-size: 90px;
        bottom: -10px;
        right: 0;
    }
    .cta-section { padding: 56px 0; }
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    .cta-actions .btn-light,
    .cta-actions .btn-outline-light {
        width: 200px;
    }
    .top-bar-note { display: none; }
}