/* roulang page: index */
:root {
            --primary: #0f6bff;
            --primary-dark: #0a4cc7;
            --primary-soft: #eaf1ff;
            --primary-glow: rgba(15, 107, 255, 0.18);
            --accent: #ff6a3d;
            --accent-soft: #fff0eb;
            --ink: #17213a;
            --ink-soft: #53617d;
            --bg: #f4f7fc;
            --bg-alt: #eef2f9;
            --card-bg: #ffffff;
            --line: #e3eaf5;
            --line-strong: #cbd8eb;
            --radius-sm: 10px;
            --radius: 18px;
            --radius-lg: 30px;
            --shadow-sm: 0 3px 14px rgba(20, 60, 120, 0.06);
            --shadow-md: 0 10px 36px rgba(20, 60, 130, 0.09);
            --shadow-lg: 0 24px 64px rgba(16, 45, 100, 0.14);
            --transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --nav-h: 78px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1200;
            height: var(--nav-h);
            border-bottom: 1px solid rgba(255, 255, 255, 0.22);
            background: linear-gradient(160deg, rgba(10, 18, 38, 0.82) 0%, rgba(10, 26, 60, 0.65) 100%);
            backdrop-filter: blur(18px) saturate(1.5);
            -webkit-backdrop-filter: blur(18px) saturate(1.5);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.18);
            transition: var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(8, 16, 34, 0.92);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
            backdrop-filter: blur(24px);
        }

        .nav-wrap {
            height: var(--nav-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand:hover {
            color: #ffffff;
            opacity: 0.92;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 11px;
            background: linear-gradient(135deg, #fff 0%, #dce9ff 100%);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            box-shadow: 0 6px 18px rgba(15, 107, 255, 0.35);
            flex-shrink: 0;
        }

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

        .nav-menu a {
            position: relative;
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 9px 18px;
            border-radius: 100px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .nav-menu a::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 3px;
            border-radius: 3px;
            background: #ffffff;
            transform: translateX(-50%);
            transition: var(--transition);
            opacity: 0;
        }

        .nav-menu a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-menu a.active {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.16);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
        }

        .nav-menu a.active::after {
            width: 22px;
            opacity: 1;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 100px;
            background: linear-gradient(135deg, #ffffff, #e3edff);
            color: var(--primary-dark) !important;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 12px 30px rgba(15, 107, 255, 0.35);
            color: var(--primary-dark) !important;
        }

        .burger {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.24);
            background: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .burger:hover {
            background: rgba(255, 255, 255, 0.22);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            padding: calc(var(--nav-h) + 70px) 0 80px;
            background: url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(7, 14, 30, 0.92) 0%, rgba(7, 14, 30, 0.75) 48%, rgba(6, 18, 40, 0.45) 100%);
        }

        .hero::after {
            content: "";
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--primary-glow), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 3;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 100px;
            padding: 8px 18px;
            color: #dbe8ff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.4px;
            backdrop-filter: blur(6px);
        }

        .hero-title {
            font-size: clamp(38px, 5.2vw, 64px);
            font-weight: 900;
            line-height: 1.18;
            color: #ffffff;
            letter-spacing: 0.5px;
            margin-top: 22px;
        }

        .hero-title .grad {
            background: linear-gradient(120deg, #ffffff, #9dc2ff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            color: rgba(225, 235, 255, 0.88);
            font-size: 17px;
            line-height: 1.85;
            max-width: 620px;
            margin-top: 18px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 34px;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--primary), #3480ff);
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
            border: none;
            box-shadow: 0 14px 36px rgba(15, 107, 255, 0.42);
            transition: var(--transition);
        }

        .btn-main:hover {
            background: linear-gradient(135deg, #0b4fd3, #2168e8);
            color: #ffffff;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 20px 44px rgba(15, 107, 255, 0.5);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 100px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #ffffff;
            font-weight: 600;
            font-size: 16px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #ffffff;
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.55);
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 54px;
            max-width: 640px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius);
            padding: 20px 24px;
            backdrop-filter: blur(12px);
            transition: var(--transition);
        }

        .hero-stat:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-4px);
        }

        .hero-stat .num {
            font-size: 30px;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.2;
        }

        .hero-stat .label {
            font-size: 13px;
            color: rgba(220, 232, 255, 0.82);
            margin-top: 4px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 100px 0;
        }

        .section--alt {
            background: var(--bg-alt);
        }

        .section--dark {
            background: #0b1228;
            color: #ffffff;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 58px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--primary);
            font-size: 14px;
            letter-spacing: 1.6px;
            text-transform: uppercase;
            background: var(--primary-soft);
            padding: 8px 18px;
            border-radius: 100px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(28px, 3.2vw, 40px);
            font-weight: 900;
            line-height: 1.3;
            margin: 0;
            letter-spacing: 0.3px;
        }

        .section-head p {
            margin-top: 14px;
            color: var(--ink-soft);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== 能力卡 ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 34px 30px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            height: 4px;
            width: 60px;
            border-radius: 0 4px 4px 0;
            background: linear-gradient(90deg, var(--primary), transparent);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: var(--line-strong);
        }

        .feature-card:hover::before {
            width: 90px;
        }

        .feature-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #ffffff;
            transform: rotate(-6deg) scale(1.05);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .feature-card p {
            color: var(--ink-soft);
            font-size: 15px;
            margin-bottom: 0;
        }

        /* ===== 分类入口 ===== */
        .class-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 26px;
        }

        .class-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            border: 1px solid var(--line);
        }

        .class-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 12, 28, 0.05) 30%, rgba(6, 12, 28, 0.88) 100%);
            transition: var(--transition);
        }

        .class-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .class-card:hover::before {
            background: linear-gradient(180deg, rgba(6, 12, 28, 0) 10%, rgba(6, 12, 28, 0.92) 100%);
        }

        .class-body {
            position: relative;
            z-index: 2;
            padding: 36px 32px;
            color: #ffffff;
        }

        .class-body .badge-soft {
            display: inline-block;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            border: 1px solid rgba(255, 255, 255, 0.28);
        }

        .class-body h3 {
            font-size: 25px;
            font-weight: 900;
            margin-bottom: 8px;
        }

        .class-body p {
            font-size: 14px;
            opacity: 0.88;
            max-width: 380px;
        }

        .class-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #ffffff;
            font-weight: 700;
            margin-top: 16px;
            font-size: 15px;
        }

        .class-link:hover {
            color: #bcd3ff;
            gap: 13px;
        }

        .class-card .corner-icon {
            position: absolute;
            top: 22px;
            right: 22px;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.24);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 19px;
            z-index: 2;
        }

        /* ===== 最新资讯 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--line-strong);
        }

        .news-card-cover {
            position: relative;
            height: 186px;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-card-cover img {
            transform: scale(1.06);
        }

        .news-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 107, 255, 0.92);
            backdrop-filter: blur(8px);
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 13px;
            border-radius: 100px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .news-card-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-body h3 {
            font-size: 17px;
            font-weight: 800;
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .news-card-body h3 a {
            color: var(--ink);
        }

        .news-card-body h3 a:hover {
            color: var(--primary);
        }

        .news-card-body p {
            color: var(--ink-soft);
            font-size: 14px;
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--line);
            padding-top: 14px;
            font-size: 13px;
            color: var(--ink-soft);
        }

        .news-card-meta time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 数据横幅 ===== */
        .data-banner {
            background: url("/assets/images/backpic/back-2.png") center center / cover no-repeat fixed;
            padding: 100px 0;
            position: relative;
        }

        .data-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(7, 16, 36, 0.94), rgba(10, 24, 56, 0.82));
        }

        .data-banner .container {
            position: relative;
            z-index: 2;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }

        .data-block {
            text-align: center;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 42px 18px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .data-block:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-6px);
        }

        .data-block .icon {
            font-size: 28px;
            color: #9cc0ff;
            margin-bottom: 14px;
        }

        .data-block .value {
            font-size: 40px;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.2;
        }

        .data-block .unit {
            font-size: 14px;
            color: rgba(220, 232, 255, 0.75);
            margin-top: 6px;
        }

        /* ===== 流程 ===== */
        .flow-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            text-align: center;
            padding: 34px 20px;
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            position: relative;
            transition: var(--transition);
        }

        .flow-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .flow-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            font-weight: 800;
            font-size: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px var(--primary-glow);
        }

        .flow-step h4 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .flow-step p {
            font-size: 14px;
            color: var(--ink-soft);
            margin-bottom: 0;
        }

        .flow-step::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            font-size: 14px;
            opacity: 0.5;
            z-index: 2;
        }

        .flow-step:last-child::after {
            content: none;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--line-strong);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 22px 28px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            list-style: none;
            color: var(--ink);
        }

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

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: 0 8px 30px var(--primary-glow);
        }

        .faq-item .answer {
            padding: 0 28px 24px;
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.85;
        }

        /* ===== CTA ===== */
        .cta-panel {
            background: linear-gradient(135deg, #0b1a40 0%, #0f2d70 60%, #1358c9 100%);
            border-radius: var(--radius-lg);
            padding: 54px 60px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 60%);
            border-radius: 50%;
        }

        .cta-panel .row {
            position: relative;
            z-index: 2;
        }

        .cta-panel h3 {
            font-size: 30px;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-panel p {
            color: rgba(220, 232, 255, 0.8);
            font-size: 16px;
        }

        .cta-panel .btn {
            padding: 15px 38px;
            border-radius: 100px;
            font-weight: 700;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b0f1f;
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 30px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .site-footer p {
            font-size: 14px;
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer h5 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

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

        .site-footer ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
        }

        .site-footer ul a:hover {
            color: #ffffff;
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 50px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 78px 0;
            }

            .class-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .flow-wrap {
                grid-template-columns: repeat(2, 1fr);
            }

            .flow-step::after {
                content: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-h: 64px;
            }

            .burger {
                display: inline-flex;
            }

            .nav-menu {
                position: fixed;
                top: var(--nav-h);
                left: 0;
                right: 0;
                background: rgba(8, 16, 34, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 18px 24px 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            }

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

            .nav-menu a {
                padding: 13px 20px;
                border-radius: 12px;
                color: rgba(255, 255, 255, 0.9);
                font-size: 16px;
            }

            .nav-menu a::after {
                display: none;
            }

            .nav-cta {
                justify-content: center;
                margin-top: 10px;
            }

            .hero {
                min-height: auto;
                padding: calc(var(--nav-h) + 54px) 0 64px;
            }

            .hero-title {
                font-size: 36px;
            }

            .hero-sub {
                font-size: 15px;
            }

            .hero-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                margin-top: 38px;
            }

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

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

            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .data-block {
                padding: 28px 14px;
                border-radius: var(--radius);
            }

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

            .cta-panel {
                padding: 38px 28px;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .site-footer {
                padding: 50px 0 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .hero-title {
                font-size: 31px;
            }

            .hero-actions .btn-main,
            .hero-actions .btn-ghost-light {
                width: 100%;
                justify-content: center;
            }

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

            .data-block {
                display: flex;
                align-items: center;
                gap: 16px;
                padding: 20px 24px;
                text-align: left;
            }

            .data-block .icon {
                margin-bottom: 0;
                font-size: 24px;
            }

            .data-block .value {
                font-size: 30px;
            }

            .class-body {
                padding: 26px 22px;
            }

            .cta-panel {
                padding: 32px 22px;
            }

            .cta-panel h3 {
                font-size: 24px;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0b1f3a;
            --primary-2: #13315f;
            --accent: #ff6a00;
            --accent-2: #ff9430;
            --bg: #f5f7fb;
            --white: #ffffff;
            --text: #1e2a3d;
            --muted: #5b6b82;
            --border: #e4e9f1;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 14px rgba(11, 31, 58, 0.06);
            --shadow: 0 12px 32px rgba(11, 31, 58, 0.10);
            --shadow-lg: 0 24px 54px rgba(11, 31, 58, 0.16);
            --transition: all .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 导航 ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            padding: 22px 0;
            transition: var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-sm);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.32rem;
            font-weight: 800;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .site-nav.scrolled .brand {
            color: var(--primary);
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 6px 18px rgba(255, 106, 0, .32);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 600;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: .94rem;
            letter-spacing: .3px;
            transition: var(--transition);
        }

        .site-nav.scrolled .nav-menu a {
            color: var(--text);
        }

        .nav-menu a:hover {
            background: rgba(255, 255, 255, .15);
            transform: translateY(-1px);
        }

        .site-nav.scrolled .nav-menu a:hover {
            background: rgba(11, 31, 58, .06);
            color: var(--primary);
        }

        .nav-menu a.active {
            background: var(--accent);
            color: #fff !important;
            box-shadow: 0 6px 18px rgba(255, 106, 0, .35);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .92rem;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .site-nav.scrolled .nav-cta {
            background: var(--accent);
            border-color: transparent;
            color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 106, 0, .3);
        }

        .burger {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            background: rgba(255, 255, 255, .2);
            border-radius: 12px;
            color: #fff;
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .site-nav.scrolled .burger {
            background: var(--primary);
            color: #fff;
        }

        @media (max-width: 991px) {
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 16px;
                right: 16px;
                background: rgba(11, 31, 58, .96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-radius: 16px;
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-14px);
                transition: var(--transition);
            }

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

            .nav-menu a {
                color: #fff !important;
                padding: 14px 18px;
                border-radius: 12px;
                justify-content: flex-start;
                font-size: 1rem;
            }

            .nav-menu a:hover,
            .nav-menu a.active {
                background: var(--accent);
                color: #fff !important;
            }

            .site-nav.scrolled .nav-menu {
                background: rgba(255, 255, 255, .98);
            }

            .site-nav.scrolled .nav-menu a {
                color: var(--text) !important;
            }

            .burger {
                display: inline-flex;
            }

            .nav-cta {
                display: none !important;
            }
        }

        /* ========== 页面横幅 ========== */
        .page-banner {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            padding: 160px 0 110px;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 31, 58, .92) 0%, rgba(11, 31, 58, .68) 60%, rgba(255, 106, 0, .2) 100%);
        }

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

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: .9rem;
            font-weight: 600;
            letter-spacing: 1px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .banner-title {
            font-size: clamp(2.4rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-top: 20px;
            letter-spacing: 1px;
        }

        .banner-sub {
            font-size: 1.12rem;
            max-width: 660px;
            margin-top: 18px;
            color: rgba(255, 255, 255, .9);
        }

        .banner-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .banner-meta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .85);
        }

        .banner-meta a:hover {
            color: var(--accent-2);
        }

        .banner-meta a i {
            font-size: .8rem;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 96px 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 54px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 106, 0, .1);
            color: var(--accent);
            padding: 7px 18px;
            border-radius: 30px;
            font-weight: 700;
            font-size: .85rem;
            letter-spacing: 1.5px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.4vw, 2.4rem);
            font-weight: 800;
            color: var(--primary);
            margin-top: 18px;
            line-height: 1.25;
            letter-spacing: .5px;
        }

        .section-sub {
            color: var(--muted);
            font-size: 1.04rem;
            margin-top: 14px;
        }

        /* ========== 导读 ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-copy .intro-label {
            color: var(--accent);
            font-weight: 700;
            font-size: .92rem;
            letter-spacing: 2px;
        }

        .intro-copy h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-top: 14px;
            line-height: 1.3;
        }

        .intro-copy p {
            color: var(--muted);
            margin-top: 20px;
            font-size: 1.02rem;
        }

        .intro-features {
            list-style: none;
            margin-top: 28px;
            padding: 0;
        }

        .intro-features li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 14px;
            font-weight: 500;
            color: var(--text);
        }

        .intro-features li i {
            color: var(--accent);
            margin-top: 4px;
        }

        .intro-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }

        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 31, 58, .35) 100%);
        }

        @media (max-width: 991px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        /* ========== 覆盖分类卡片 ========== */
        .category-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
            opacity: 0;
            transition: var(--transition);
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

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

        .category-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(255, 106, 0, .1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            transition: var(--transition);
        }

        .category-card:hover .category-icon {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 20px rgba(255, 106, 0, .3);
        }

        .category-card h3 {
            font-size: 1.28rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 20px;
        }

        .category-card p {
            color: var(--muted);
            font-size: .95rem;
            margin-top: 12px;
        }

        .category-card .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: .9rem;
            margin-top: 18px;
        }

        .category-card .category-link:hover {
            gap: 10px;
        }

        /* ========== 最新资讯 ========== */
        .news-card {
            display: flex;
            gap: 24px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            align-items: stretch;
        }

        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }

        .news-thumb {
            width: 220px;
            min-height: 150px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--border);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }

        .news-info {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-info .news-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 106, 0, .1);
            color: var(--accent);
            font-size: .82rem;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 30px;
            width: fit-content;
            margin-bottom: 12px;
        }

        .news-info h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
        }

        .news-info h3 a:hover {
            color: var(--accent);
        }

        .news-info p {
            color: var(--muted);
            font-size: .92rem;
            margin-top: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: .85rem;
            color: var(--muted);
        }

        @media (max-width: 767px) {
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                min-height: 200px;
            }
        }

        /* ========== 数据指标 ========== */
        .stats-section {
            position: relative;
            background: var(--primary);
            padding: 84px 0;
            color: #fff;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 106, 0, .12);
            filter: blur(40px);
        }

        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -70%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
            filter: blur(30px);
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stats-section .section-title {
            color: #fff;
        }

        .stats-section .section-sub {
            color: rgba(255, 255, 255, .75);
        }

        .stat-card {
            text-align: center;
            padding: 34px 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: var(--transition);
            height: 100%;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-6px);
        }

        .stat-num {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-2);
            line-height: 1;
        }

        .stat-label {
            margin-top: 12px;
            font-size: .98rem;
            color: rgba(255, 255, 255, .85);
            font-weight: 500;
        }

        /* ========== 报道流程 ========== */
        .flow-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 10px;
        }

        .flow-step {
            position: relative;
            padding: 34px 26px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

        .flow-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }

        .flow-num {
            width: 44px;
            height: 44px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent), var(--accent-2));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.05rem;
            box-shadow: 0 6px 16px rgba(255, 106, 0, .3);
        }

        .flow-step h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 18px;
        }

        .flow-step p {
            color: var(--muted);
            font-size: .92rem;
            margin-top: 10px;
        }

        @media (max-width: 991px) {
            .flow-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .flow-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 106, 0, .3);
            box-shadow: var(--shadow-sm);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-q i {
            color: var(--accent);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-a-inner {
            padding: 0 24px 22px;
            color: var(--muted);
            font-size: .96rem;
            border-top: 1px dashed var(--border);
            margin: 0 24px 0;
            padding-top: 18px;
            padding-left: 0;
            padding-right: 0;
            margin-top: 18px;
        }

        /* ========== CTA ========== */
        .cta-panel {
            position: relative;
            background: linear-gradient(135deg, var(--primary) 0%, #1b3a67 60%, rgba(255, 106, 0, .4) 100%);
            border-radius: 24px;
            padding: 60px 50px;
            color: #fff;
            overflow: hidden;
            text-align: center;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-panel h2 {
            font-size: 2rem;
            font-weight: 800;
        }

        .cta-panel p {
            color: rgba(255, 255, 255, .82);
            max-width: 560px;
            margin: 16px auto 0;
            font-size: 1.02rem;
        }

        .cta-btns {
            margin-top: 32px;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 50px;
            border: none;
            font-size: 1rem;
            box-shadow: 0 8px 24px rgba(255, 106, 0, .35);
            transition: var(--transition);
        }

        .btn-solid:hover {
            background: #e85f00;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 106, 0, .4);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, .6);
            font-size: 1rem;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #081627;
            color: #9fb0c6;
            padding: 72px 0 32px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
        }

        .footer-brand:hover {
            color: var(--accent-2);
        }

        .site-footer h5 {
            color: #fff;
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

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

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: .95rem;
        }

        .site-footer ul a:hover {
            color: var(--accent-2);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 50px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .9rem;
            color: #7488a3;
        }

        /* ========== 响应式补充 ========== */
        @media (max-width: 1024px) {
            .section {
                padding: 76px 0;
            }

            .page-banner {
                min-height: 440px;
                padding: 140px 0 90px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .banner-title {
                font-size: 2.2rem;
            }

            .banner-sub {
                font-size: 1rem;
            }

            .cta-panel {
                padding: 44px 24px;
                border-radius: 18px;
            }

            .cta-panel h2 {
                font-size: 1.5rem;
            }

            .stat-num {
                font-size: 2.2rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                min-height: 420px;
                padding: 130px 0 80px;
            }

            .banner-title {
                font-size: 1.9rem;
            }

            .banner-tag {
                font-size: .82rem;
            }

            .section-title {
                font-size: 1.55rem;
            }

            .category-card {
                padding: 26px 20px;
            }

            .intro-copy h2 {
                font-size: 1.55rem;
            }

            .btn-solid,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e3a8a;
            --primary-dark: #15275c;
            --primary-light: #3b5bdb;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f6f8fc;
            --bg-deep: #0d1830;
            --bg-soft: #eef2f8;
            --text: #1e293b;
            --text-weak: #5b6b81;
            --text-light: #94a3b8;
            --border: #e3e9f1;
            --white: #ffffff;
            --radius: 20px;
            --radius-sm: 14px;
            --radius-xs: 10px;
            --shadow: 0 6px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 18px 50px rgba(15, 23, 42, 0.13);
            --shadow-primary: 0 10px 30px rgba(30, 58, 138, 0.24);
            --shadow-accent: 0 10px 30px rgba(245, 158, 11, 0.28);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', 'PingFang SC', 'HarmonyOS Sans', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --bs-primary: #1e3a8a;
            --bs-primary-rgb: 30, 58, 138;
            --bs-link-color: #1e3a8a;
            --bs-link-hover-color: #f59e0b;
            --bs-border-color: #e3e9f1;
            --bs-border-radius: 16px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        ul,
        ol {
            padding-left: 1.25rem;
        }

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

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

        .section-head p {
            color: var(--text-weak);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.02rem;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: var(--white);
            border: 1px solid var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.96rem;
            transition: var(--transition);
            box-shadow: var(--shadow-primary);
        }

        .btn-main:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(30, 58, 138, 0.32);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 10px 26px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.94rem;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-primary);
        }

        .badge-cat {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50px;
        }

        .bg-deep {
            background: var(--bg-deep);
            color: var(--white);
        }

        /* ===== 导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-bottom: 1px solid rgba(227, 233, 241, 0.7);
            padding: 14px 0;
            transition: var(--transition);
        }

        .site-nav.scrolled {
            background: rgba(255, 255, 255, 0.94);
            box-shadow: 0 8px 32px rgba(15, 23, 42, 0.09);
            padding: 8px 0;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            flex-shrink: 0;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--white);
            border-radius: 12px;
            font-size: 1rem;
            box-shadow: var(--shadow-primary);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.94rem;
            font-weight: 600;
            color: var(--text-weak);
            border: 1px solid transparent;
        }

        .nav-menu a i {
            font-size: 0.86rem;
            opacity: 0.9;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background: rgba(30, 58, 138, 0.06);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: var(--white);
            box-shadow: var(--shadow-primary);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
            border: 1px solid rgba(245, 158, 11, 0.25);
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 700;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--accent);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: var(--shadow-accent);
        }

        .burger {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 1.05rem;
            color: var(--primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .burger:hover {
            background: rgba(30, 58, 138, 0.06);
        }

        /* ===== 文章 Hero ===== */
        .post-hero {
            position: relative;
            padding: 180px 0 76px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }

        .post-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(13, 24, 48, 0.94) 0%, rgba(30, 58, 138, 0.72) 55%, rgba(13, 24, 48, 0.28) 100%);
        }

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

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            margin-bottom: 26px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }

        .breadcrumb-nav a:hover {
            color: var(--accent-light);
        }

        .breadcrumb-nav i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .post-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, 0.18);
            backdrop-filter: blur(8px);
            color: var(--accent-light);
            border: 1px solid rgba(245, 158, 11, 0.35);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }

        .post-title {
            color: var(--white);
            font-size: clamp(1.7rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 22px;
            max-width: 820px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }

        .post-meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.92rem;
        }

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

        .post-meta-line i {
            color: var(--accent-light);
        }

        /* ===== 文章主体 ===== */
        .article-area {
            padding: 70px 0 60px;
        }

        .article-body {
            background: var(--white);
            border-radius: var(--radius);
            padding: 44px 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .article-content {
            font-size: 1.06rem;
            line-height: 1.9;
            color: var(--text);
        }

        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--primary);
            margin: 2.2rem 0 1rem;
            padding-left: 16px;
            border-left: 4px solid var(--accent);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            margin: 1.8rem 0 0.8rem;
        }

        .article-content p {
            margin-bottom: 1.2rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2rem;
            padding-left: 1.5rem;
        }

        .article-content li {
            margin-bottom: 0.5rem;
        }

        .article-content blockquote {
            background: var(--bg-soft);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 18px 24px;
            margin: 1.8rem 0;
            color: var(--text-weak);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.8rem 0;
            box-shadow: var(--shadow);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            font-size: 0.95rem;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }

        .article-content th {
            background: var(--bg-soft);
            font-weight: 700;
            color: var(--primary);
        }

        .article-content a {
            color: var(--primary);
            font-weight: 600;
            border-bottom: 1px solid rgba(30, 58, 138, 0.25);
        }

        .article-content a:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }

        .article-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-soft);
            color: var(--text-weak);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.84rem;
            font-weight: 600;
        }

        .article-tags span i {
            color: var(--accent);
        }

        .not-found-box {
            text-align: center;
            padding: 70px 30px;
        }

        .not-found-box i {
            font-size: 3.6rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-weak);
            margin-bottom: 28px;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-card {
            background: var(--white);
            border-radius: var(--radius-sm);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .side-card h4 {
            font-size: 1.06rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .side-card h4 i {
            color: var(--accent);
        }

        .side-card p {
            font-size: 0.92rem;
            color: var(--text-weak);
            margin-bottom: 18px;
        }

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

        .side-links li {
            border-bottom: 1px dashed var(--border);
        }

        .side-links li:last-child {
            border-bottom: none;
        }

        .side-links a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 4px;
            font-size: 0.94rem;
            font-weight: 600;
            color: var(--text);
        }

        .side-links a i {
            color: var(--primary);
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
        }

        .side-links a:hover {
            color: var(--accent);
            padding-left: 10px;
        }

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

        .side-list li {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
        }

        .side-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .side-list a {
            display: block;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
        }

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

        .side-list .side-date {
            display: block;
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        .side-empty {
            font-size: 0.88rem;
            color: var(--text-light);
            text-align: center;
            padding: 20px 0;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 72px 0;
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .related-card {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 58, 138, 0.2);
        }

        .related-thumb {
            display: block;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-soft);
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.06);
        }

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

        .related-body .badge-cat {
            margin-bottom: 12px;
        }

        .related-body h3 {
            font-size: 1.14rem;
            font-weight: 800;
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .related-body h3 a {
            color: var(--text);
        }

        .related-body h3 a:hover {
            color: var(--primary);
        }

        .related-body p {
            font-size: 0.92rem;
            color: var(--text-weak);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-light);
            font-size: 0.82rem;
        }

        .related-meta i {
            color: var(--accent);
            transition: var(--transition);
        }

        .related-card:hover .related-meta i {
            transform: translateX(6px);
        }

        /* ===== 平台特点 ===== */
        .feature-section {
            padding: 76px 0;
            background: var(--bg-deep);
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .feature-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -100px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(30, 58, 138, 0.5), transparent 70%);
        }

        .feature-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.22), transparent 70%);
        }

        .feature-section .container {
            position: relative;
            z-index: 2;
        }

        .feature-section .section-head h2 {
            color: var(--white);
        }

        .feature-section .section-head p {
            color: rgba(255, 255, 255, 0.6);
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 32px 28px;
            height: 100%;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .feature-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(245, 158, 11, 0.4);
            transform: translateY(-6px);
        }

        .feature-icon {
            width: 54px;
            height: 54px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--white);
            margin-bottom: 20px;
            box-shadow: var(--shadow-accent);
        }

        .feature-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .feature-card p {
            font-size: 0.93rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .feature-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 52px;
        }

        .stat-item {
            text-align: center;
            padding: 22px 16px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stat-item strong {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-light);
            margin-bottom: 6px;
        }

        .stat-item span {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 76px 0;
            background: var(--bg);
        }

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

        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

        .accordion-button {
            background: var(--white);
            color: var(--text);
            font-weight: 700;
            font-size: 1rem;
            padding: 20px 24px;
            box-shadow: none !important;
            transition: var(--transition);
        }

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

        .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }

        .accordion-button:hover {
            background: var(--bg-soft);
        }

        .accordion-button:not(.collapsed):hover {
            background: var(--primary-dark);
        }

        .accordion-body {
            padding: 8px 24px 24px;
            color: var(--text-weak);
            font-size: 0.96rem;
            line-height: 1.8;
            background: var(--white);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(13, 24, 48, 0.94), rgba(30, 58, 138, 0.82), rgba(245, 158, 11, 0.55));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            color: var(--white);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.06rem;
            max-width: 600px;
            margin: 0 auto 34px;
        }

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

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--white);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            box-shadow: var(--shadow-accent);
        }

        .btn-cta:hover {
            background: var(--accent-light);
            color: var(--white);
            transform: translateY(-3px);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            color: var(--white);
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            padding: 13px 34px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: var(--white);
            color: var(--white);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.72);
            padding: 64px 0 0;
            position: relative;
        }

        .site-footer h5 {
            color: var(--white);
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

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

        .site-footer ul li {
            margin-bottom: 12px;
            font-size: 0.93rem;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.66);
            transition: var(--transition);
        }

        .site-footer a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--white);
            font-size: 1.3rem;
            font-weight: 800;
        }

        .footer-brand:hover {
            color: var(--accent-light);
        }

        .footer-bottom {
            margin-top: 48px;
            padding: 22px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-menu a {
                padding: 8px 14px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 991.98px) {
            .burger {
                display: inline-flex;
            }

            .nav-wrap {
                flex-wrap: wrap;
            }

            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 4px;
                display: none;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
            }

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

            .nav-menu a {
                width: 100%;
                padding: 13px 16px;
                font-size: 0.96rem;
                border-radius: 12px;
            }

            .nav-menu a.active {
                background: var(--primary);
                color: var(--white);
            }

            .article-body {
                padding: 32px 26px;
            }

            .article-sidebar {
                position: static;
                margin-top: 40px;
            }

            .feature-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767.98px) {
            .post-hero {
                padding: 150px 0 60px;
            }

            .post-title {
                font-size: 1.7rem;
            }

            .section-head h2 {
                font-size: 1.65rem;
            }

            .article-area,
            .related-section,
            .feature-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }

            .article-body {
                padding: 26px 20px;
                border-radius: 16px;
            }

            .article-content {
                font-size: 1rem;
            }

            .feature-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stat-item strong {
                font-size: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .brand {
                font-size: 1.05rem;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }

            .nav-cta {
                display: none !important;
            }

            .post-meta-line {
                gap: 12px;
                font-size: 0.84rem;
                flex-direction: column;
            }

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

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

            .btn-cta,
            .btn-ghost {
                width: 100%;
                justify-content: center;
            }

            .related-body h3 {
                font-size: 1rem;
            }
        }

/* roulang page: category2 */
/* ================= 设计变量 ================= */
        :root {
            --primary: #0d1b2e;
            --primary-dark: #071220;
            --accent: #f0a500;
            --accent-hover: #d99400;
            --accent-soft: rgba(240, 165, 0, .12);
            --surface: #ffffff;
            --surface-2: #f4f7fb;
            --text-body: #3a4a5f;
            --text-light: #7c8ca0;
            --border-color: #e4eaf1;
            --radius-lg: 1.15rem;
            --radius-md: .8rem;
            --radius-sm: .5rem;
            --shadow-sm: 0 .15rem .4rem rgba(13, 27, 46, .06);
            --shadow-md: 0 .65rem 1.6rem rgba(13, 27, 46, .08);
            --shadow-lg: 0 1.2rem 2.8rem rgba(13, 27, 46, .12);
            --spacing-section: 5.5rem;
        }

        /* ================= 基础 Reset ================= */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--surface);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease, background .25s ease, border-color .25s ease, opacity .25s ease;
        }

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

        button {
            border: none;
            background: none;
            cursor: pointer;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--primary);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 .5rem;
        }

        section {
            position: relative;
        }

        /* ================= 容器 ================= */
        .container {
            max-width: 1200px;
        }

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

        .section-head {
            max-width: 680px;
            margin-bottom: 3rem;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--accent);
            font-weight: 600;
            font-size: .88rem;
            letter-spacing: .05em;
            text-transform: uppercase;
            margin-bottom: .7rem;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.4rem);
            margin-bottom: .8rem;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 1.04rem;
            margin-bottom: 0;
        }

        /* ================= 导航 ================= */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            background: rgba(13, 27, 46, .45);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
        }

        .site-nav.scrolled {
            background: rgba(255, 255, 255, .94);
            border-bottom-color: rgba(13, 27, 46, .06);
            box-shadow: 0 .4rem 1.5rem rgba(13, 27, 46, .08);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 78px;
            gap: 1rem;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: .65rem;
            font-size: 1.18rem;
            font-weight: 700;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: .01em;
            transition: color .3s ease;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(240, 165, 0, .16);
            color: var(--accent);
            font-size: 1.05rem;
            border: 1px solid rgba(240, 165, 0, .35);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: .3rem;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            padding: .55rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: .96rem;
            color: rgba(255, 255, 255, .82);
            transition: background .25s ease, color .25s ease;
        }

        .nav-menu a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, .1);
        }

        .nav-menu a.active {
            color: var(--accent);
            background: rgba(240, 165, 0, .14);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .55rem 1.25rem;
            border-radius: 50rem;
            font-weight: 600;
            font-size: .92rem;
            color: #ffffff;
            background: var(--accent);
            border: 1px solid rgba(240, 165, 0, .5);
            transition: background .3s ease, transform .3s ease, box-shadow .3s ease;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 .4rem 1.2rem rgba(240, 165, 0, .35);
            color: #ffffff;
        }

        .site-nav.scrolled .brand {
            color: var(--primary);
        }

        .site-nav.scrolled .nav-menu a {
            color: var(--text-body);
        }

        .site-nav.scrolled .nav-menu a:hover {
            color: var(--primary);
            background: var(--accent-soft);
        }

        .site-nav.scrolled .nav-menu a.active {
            color: var(--accent-hover);
            background: var(--accent-soft);
        }

        .site-nav.scrolled .nav-cta {
            color: #ffffff;
        }

        .burger {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: #ffffff;
            font-size: 1.2rem;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            transition: background .25s ease, color .25s ease;
        }

        .site-nav.scrolled .burger {
            color: var(--primary);
            background: rgba(13, 27, 46, .06);
            border-color: rgba(13, 27, 46, .1);
        }

        /* ================= 内页 Hero ================= */
        .page-hero {
            padding: 11rem 0 5rem;
            background:
                linear-gradient(135deg, rgba(7, 18, 32, .94), rgba(13, 27, 46, .72)),
                url('/assets/images/backpic/back-2.png') center/cover;
            color: #ffffff;
        }

        .page-hero .breadcrumb-custom {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .87rem;
            color: rgba(255, 255, 255, .65);
            margin-bottom: 1.25rem;
            padding: .4rem .9rem;
            border-radius: 50rem;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .12);
            backdrop-filter: blur(6px);
        }

        .page-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, .7);
        }

        .page-hero .breadcrumb-custom a:hover {
            color: var(--accent);
        }

        .page-hero .breadcrumb-custom i {
            color: var(--accent);
        }

        .page-hero h1 {
            color: #ffffff;
            font-size: clamp(2rem, 4.4vw, 3.1rem);
            font-weight: 800;
            margin-bottom: 1rem;
            letter-spacing: .01em;
        }

        .page-hero .lead {
            color: rgba(255, 255, 255, .78);
            font-size: clamp(1rem, 1.6vw, 1.15rem);
            max-width: 640px;
            margin-bottom: 0;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
            margin-top: 1.6rem;
        }

        .hero-tags .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            padding: .35rem .9rem;
            border-radius: 50rem;
            font-size: .84rem;
            color: rgba(255, 255, 255, .85);
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .15);
        }

        .hero-tags .tag-pill i {
            color: var(--accent);
            font-size: .75rem;
        }

        /* ================= 策略维度卡片 ================= */
        .dim-card {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.6rem;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .dim-card:hover {
            transform: translateY(-.4rem);
            box-shadow: var(--shadow-lg);
            border-color: rgba(240, 165, 0, .4);
        }

        .dim-card .dim-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 1.1rem;
        }

        .dim-card h3 {
            font-size: 1.14rem;
            margin-bottom: .6rem;
        }

        .dim-card p {
            font-size: .94rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ================= 精选指南卡片 ================= */
        .guide-card {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .guide-card:hover {
            transform: translateY(-.35rem);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 165, 0, .3);
        }

        .guide-card .card-img-wrap {
            position: relative;
            height: 218px;
            overflow: hidden;
            background: var(--surface-2);
        }

        .guide-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }

        .guide-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .guide-card .card-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(7, 18, 32, .35));
        }

        .guide-card .card-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            z-index: 2;
            padding: .3rem .8rem;
            border-radius: 50rem;
            font-size: .78rem;
            font-weight: 600;
            color: #ffffff;
            background: rgba(240, 165, 0, .92);
            box-shadow: 0 .25rem .6rem rgba(13, 27, 46, .18);
        }

        .guide-card .card-body-custom {
            padding: 1.4rem 1.4rem 1.5rem;
        }

        .guide-card h3 {
            font-size: 1.06rem;
            line-height: 1.55;
            margin-bottom: .7rem;
        }

        .guide-card h3 a {
            color: var(--primary);
        }

        .guide-card h3 a:hover {
            color: var(--accent-hover);
        }

        .guide-card p {
            font-size: .92rem;
            color: var(--text-light);
            margin-bottom: 1rem;
            line-height: 1.7;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: .84rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: .9rem;
        }

        .guide-meta span {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

        .guide-meta i {
            color: var(--accent);
            font-size: .82rem;
        }

        /* ================= 方法论 ================= */
        .method-section {
            background: linear-gradient(160deg, var(--primary-dark), #152c4a);
            color: rgba(255, 255, 255, .8);
            overflow: hidden;
        }

        .method-section .section-head h2 {
            color: #ffffff;
        }

        .method-section .section-head p {
            color: rgba(255, 255, 255, .62);
        }

        .method-section .section-head .eyebrow {
            color: var(--accent);
        }

        .method-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 1.5rem;
        }

        .method-step {
            position: relative;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.3rem;
            text-align: center;
            backdrop-filter: blur(6px);
            transition: background .3s ease, transform .3s ease, border-color .3s ease;
        }

        .method-step:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(240, 165, 0, .5);
            transform: translateY(-.3rem);
        }

        .method-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.05rem;
            margin-bottom: 1rem;
        }

        .method-step h3 {
            color: #ffffff;
            font-size: 1.02rem;
            margin-bottom: .5rem;
        }

        .method-step p {
            font-size: .9rem;
            color: rgba(255, 255, 255, .62);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ================= 数据要点 ================= */
        .stats-section {
            background: var(--surface-2);
        }

        .stat-card {
            text-align: center;
            padding: 2rem 1.4rem;
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .stat-card:hover {
            transform: translateY(-.3rem);
            box-shadow: var(--shadow-md);
        }

        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: .35rem;
        }

        .stat-card .stat-label {
            font-size: .92rem;
            color: var(--text-light);
        }

        /* ================= 策略对比 ================= */
        .compare-card {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.8rem;
            height: 100%;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .compare-card:hover {
            transform: translateY(-.3rem);
            box-shadow: var(--shadow-md);
        }

        .compare-card .compare-tag {
            display: inline-block;
            padding: .3rem .9rem;
            border-radius: 50rem;
            font-size: .8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            background: var(--accent-soft);
            color: var(--accent-hover);
        }

        .compare-card h3 {
            font-size: 1.3rem;
            margin-bottom: .8rem;
        }

        .compare-card .compare-desc {
            font-size: .94rem;
            color: var(--text-light);
            margin-bottom: 1.4rem;
            line-height: 1.75;
        }

        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-card ul li {
            position: relative;
            padding: .5rem 0 .5rem 1.7rem;
            font-size: .93rem;
            border-bottom: 1px dashed var(--border-color);
        }

        .compare-card ul li:last-child {
            border-bottom: none;
        }

        .compare-card ul li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: .5rem;
            color: var(--accent);
        }

        /* ================= FAQ ================= */
        .faq-section {
            background: var(--surface-2);
        }

        .faq-card {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: .9rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, border-color .3s ease;
        }

        .faq-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 165, 0, .35);
        }

        .faq-card .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1.15rem 1.4rem;
            font-weight: 600;
            font-size: .98rem;
            color: var(--primary);
            text-align: left;
            background: transparent;
            transition: color .2s ease;
        }

        .faq-card .faq-question i {
            color: var(--accent);
            transition: transform .3s ease;
        }

        .faq-card .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .faq-card .faq-answer {
            padding: 0 1.4rem 1.25rem;
            font-size: .93rem;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }

        .faq-card .faq-answer.open {
            display: block;
        }

        /* ================= CTA ================= */
        .cta-section {
            padding: 4.5rem 0;
            background:
                linear-gradient(135deg, rgba(7, 18, 32, .93), rgba(13, 27, 46, .78)),
                url('/assets/images/backpic/back-1.png') center/cover;
            color: #ffffff;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: clamp(1.6rem, 2.8vw, 2.2rem);
            margin-bottom: .7rem;
        }

        .cta-section p {
            color: rgba(255, 255, 255, .75);
            max-width: 520px;
            margin: 0 auto;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
            padding: .8rem 2rem;
            border-radius: 50rem;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1rem;
            transition: background .3s ease, transform .3s ease, box-shadow .3s ease;
        }

        .cta-btn:hover {
            background: #ffffff;
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 .6rem 1.8rem rgba(240, 165, 0, .4);
        }

        /* ================= 页脚 ================= */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .65);
            padding: 4rem 0 1.8rem;
        }

        .site-footer h5 {
            color: #ffffff;
            font-size: 1rem;
            margin-bottom: 1rem;
            letter-spacing: .04em;
        }

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

        .site-footer ul li {
            padding: .3rem 0;
            font-size: .92rem;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, .65);
        }

        .site-footer ul li a:hover {
            color: var(--accent);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: .65rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: .8rem;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, .1);
            font-size: .86rem;
            color: rgba(255, 255, 255, .4);
        }

        /* ================= 响应式 ================= */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 4.5rem;
            }

            .method-steps {
                grid-template-columns: repeat(3, 1fr);
            }

            .guide-card .card-img-wrap {
                height: 200px;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                min-height: 68px;
            }

            .burger {
                display: inline-flex;
            }

            .nav-menu {
                position: absolute;
                top: 100%;
                left: 1rem;
                right: 1rem;
                flex-direction: column;
                align-items: stretch;
                background: var(--primary-dark);
                border: 1px solid rgba(255, 255, 255, .1);
                border-radius: var(--radius-lg);
                padding: .8rem;
                display: none;
                box-shadow: 0 1rem 2.5rem rgba(13, 27, 46, .2);
                z-index: 1090;
            }

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

            .nav-menu a {
                color: rgba(255, 255, 255, .85);
                padding: .85rem 1rem;
                border-radius: var(--radius-sm);
            }

            .nav-menu a:hover {
                background: rgba(255, 255, 255, .12);
                color: #ffffff;
            }

            .nav-menu a.active {
                background: var(--accent-soft);
                color: var(--accent);
            }

            .page-hero {
                padding: 8.5rem 0 4rem;
            }

            .method-steps {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }

            .method-step {
                padding: 1.4rem 1rem;
            }

            .stats-section .row {
                row-gap: 1rem;
            }

            .cta-section {
                padding: 3.5rem 0;
            }

            .nav-cta {
                display: none;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 3.5rem;
            }

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

            .guide-card .card-img-wrap {
                height: 190px;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

            .page-hero .lead {
                font-size: .95rem;
            }

            .section-head {
                margin-bottom: 2rem;
            }

            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }

            .cta-section .d-flex {
                flex-direction: column;
                gap: .8rem;
            }
        }

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(240, 165, 0, .6);
            outline-offset: 2px;
            border-radius: .25rem;
        }