/* roulang page: index */
:root{--primary:#1b5df2;--primary-2:#0c3fbb;--primary-bg:#e9f0ff;--accent:#ffb020;--accent-bg:#fff7e8;--bg:#f6f8fb;--bg-deep:#0e1b33;--text:#172033;--text-2:#5b6b83;--border:#e2e8f0;--r:14px;--rs:8px;--shadow:0 6px 20px rgba(15,30,60,.08);--shadow-lg:0 18px 48px rgba(15,30,60,.14)}
*,*::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;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:#fff}
.section-head{text-align:center;max-width:760px;margin:0 auto 48px}
.section-head .eyebrow{display:inline-block;background:var(--primary-bg);color:var(--primary);font-size:13px;font-weight:600;padding:6px 16px;border-radius:30px;margin-bottom:16px}
.section-head h2{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.5px}
.section-head p{color:var(--text-2);margin-top:12px;font-size:17px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:60px;font-weight:600;font-size:15px;border:0;cursor:pointer;transition:all .25s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(27,93,242,.28)}
.btn-primary:hover{background:var(--primary-2);transform:translateY(-2px);box-shadow:0 10px 24px rgba(27,93,242,.35)}
.btn-outline{background:transparent;border:2px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-bg)}
.btn-accent{background:var(--accent);color:#1a2333;box-shadow:0 6px 18px rgba(255,176,32,.28)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,176,32,.38)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--primary-bg)}
.tag{display:inline-block;background:var(--primary-bg);color:var(--primary);font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px}
.tag-accent{background:var(--accent-bg);color:#b87a00}
/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(15,30,60,.04)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text)}
.main-nav{display:flex;align-items:center;gap:8px;flex:1}
.nav-link{padding:9px 18px;border-radius:30px;font-size:15px;font-weight:500;color:var(--text-2);transition:all .2s}
.nav-link:hover{background:var(--primary-bg);color:var(--primary)}
.nav-link.active{background:var(--primary);color:#fff;font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:40px;padding:4px 4px 4px 16px;transition:border-color .2s}
.search-box:focus-within{border-color:var(--primary);background:#fff}
.search-box input{border:0;background:transparent;outline:none;width:160px;font-size:14px;color:var(--text)}
.search-btn{background:var(--primary);color:#fff;border:0;border-radius:30px;padding:7px 16px;font-size:13px;font-weight:600;cursor:pointer}
.nav-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--text);padding:4px 10px}
/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;padding:120px 0 100px;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,27,51,.82),rgba(14,27,51,.38))}
.hero-inner{position:relative;max-width:680px;z-index:1}
.hero h1{font-size:50px;line-height:1.2;color:#fff;font-weight:800;letter-spacing:-1px}
.hero p{color:rgba(255,255,255,.85);font-size:18px;margin-top:20px;max-width:560px}
.hero-badges{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap}
.hero-badges span{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:13px;padding:5px 14px;border-radius:30px;backdrop-filter:blur(4px)}
.hero-cta{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
/* Feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:30px;transition:all .25s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-bg);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--text-2);font-size:14.5px}
/* Category blocks */
.category-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.category-card{position:relative;border-radius:var(--r);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;box-shadow:var(--shadow);transition:all .3s}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.category-card::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(14,27,51,.85))}
.category-card-body{position:relative;z-index:1;padding:32px;color:#fff}
.category-card-body h3{font-size:24px;font-weight:700;margin-bottom:8px}
.category-card-body p{font-size:14.5px;color:rgba(255,255,255,.85);margin-bottom:16px}
.link-light{color:#fff;font-weight:600;font-size:14px;border-bottom:2px solid var(--accent);padding-bottom:2px}
/* Stats */
.stats{background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;position:relative;padding:90px 0}
.stats::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,27,51,.92),rgba(14,27,51,.75))}
.stats-inner{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-num{font-size:44px;font-weight:800;color:var(--accent);line-height:1.2}
.stat-label{color:rgba(255,255,255,.75);font-size:15px;margin-top:8px}
/* Industries */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.industry-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);overflow:hidden;transition:all .25s}
.industry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.industry-card img{height:140px;object-fit:cover;width:100%}
.industry-card-body{padding:20px}
.industry-card-body h4{font-size:16px;margin-bottom:6px}
.industry-card-body p{font-size:13.5px;color:var(--text-2)}
/* News */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:26px;transition:all .25s}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.news-card-title{font-size:18px;font-weight:700;line-height:1.45;margin:12px 0 10px}
.news-card-title a:hover{color:var(--primary)}
.news-card-desc{color:var(--text-2);font-size:14px}
.news-card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:13px;color:var(--text-2)}
.link-more{color:var(--primary);font-weight:600}
.link-more:hover{text-decoration:underline}
.empty-tip{background:#fff;border:1px dashed var(--border);border-radius:var(--r);padding:40px;text-align:center;color:var(--text-2)}
/* Process */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.process-step{background:#fff;border-radius:var(--r);padding:28px;position:relative;border:1px solid var(--border);transition:all .25s}
.process-step:hover{box-shadow:var(--shadow-lg)}
.process-step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-size:36px;font-weight:800;color:var(--primary-bg);position:absolute;top:16px;right:20px;z-index:0}
.process-step h4{font-size:17px;font-weight:700;margin-bottom:8px;position:relative;z-index:1}
.process-step p{font-size:14px;color:var(--text-2);position:relative;z-index:1}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r);margin-bottom:12px;overflow:hidden}
.faq-q{padding:20px 28px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .2s}
.faq-q:hover{background:var(--primary-bg)}
.faq-q::after{content:'＋';font-size:20px;color:var(--primary);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 28px;max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--text-2);line-height:1.8}
.faq-item.open .faq-a{padding:0 28px 20px;max-height:240px}
/* CTA */
.cta{background:var(--primary);border-radius:24px;padding:60px 48px;display:flex;justify-content:space-between;align-items:center;gap:32px;box-shadow:0 18px 48px rgba(27,93,242,.3)}
.cta h2{color:#fff;font-size:30px;font-weight:800}
.cta p{color:rgba(255,255,255,.8);margin-top:8px}
/* Footer */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);padding:60px 0 28px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand .brand-text{color:#fff;font-size:22px}
.footer-brand p{margin-top:12px;font-size:14px;line-height:1.8}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:14px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px}
.footer-bottom a{color:rgba(255,255,255,.5)}
/* Responsive */
@media(max-width:1024px){
.feature-grid,.industry-grid{grid-template-columns:repeat(2,1fr)}
.stats-inner{grid-template-columns:repeat(2,1fr)}
.process-grid{grid-template-columns:repeat(2,1fr)}
.header-actions .search-box{display:none}
}
@media(max-width:768px){
.section{padding:56px 0}
.hero{padding:80px 0}
.hero h1{font-size:36px}
.header-inner{height:62px;gap:12px}
.main-nav{position:fixed;top:62px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);flex-direction:column;padding:18px 24px;gap:6px;display:none;box-shadow:var(--shadow-lg)}
.main-nav.open{display:flex}
.nav-toggle{display:block}
.category-grid,.news-grid,.footer-grid{grid-template-columns:1fr}
.industry-grid{grid-template-columns:1fr 1fr}
.cta{flex-direction:column;padding:40px 28px;text-align:center}
.hero-badges,.hero-cta{justify-content:center}
}
@media(max-width:520px){
.container{padding:0 16px}
.hero h1{font-size:28px}
.hero p{font-size:15px}
.feature-grid,.industry-grid,.process-grid,.stats-inner{grid-template-columns:1fr}
.stat-num{font-size:36px}
.cta{padding:32px 20px}
.cta h2{font-size:24px}
.footer-bottom{flex-direction:column;text-align:center}
.btn{width:100%;justify-content:center}
}

/* roulang page: category1 */
:root {
            --primary: #0e6db5;
            --primary-dark: #0a4f88;
            --primary-light: #e7f1fa;
            --accent: #f59e0b;
            --accent-light: #fef1d6;
            --bg: #f6f8fb;
            --white: #ffffff;
            --text: #17293b;
            --text-light: #5d6f82;
            --text-mute: #92a1b2;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 10px 30px rgba(24, 49, 75, 0.08);
            --shadow-hover: 0 18px 45px rgba(24, 49, 75, 0.13);
            --container: 1200px;
            --section-space: 100px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        button,
        input,
        textarea {
            font: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        section {
            scroll-margin-top: 80px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(20, 40, 70, 0.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #1b8ecb);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            border-radius: 12px;
            letter-spacing: 0.5px;
            box-shadow: 0 6px 14px rgba(14, 109, 181, 0.26);
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 4px 4px 16px;
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(14, 109, 181, 0.08);
        }

        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 130px;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: var(--text-mute);
        }

        .search-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.25s;
        }

        .search-btn:hover {
            background: var(--primary-dark);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            border-radius: 999px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1b8ecb);
            color: #fff;
            box-shadow: 0 8px 20px rgba(14, 109, 181, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(14, 109, 181, 0.32);
        }

        .btn-sm {
            padding: 9px 22px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 20px;
            cursor: pointer;
            color: var(--text);
            line-height: 1;
        }

        /* ============ Page Hero ============ */
        .page-hero {
            position: relative;
            background:
                linear-gradient(115deg, rgba(9, 38, 70, 0.92) 0%, rgba(11, 55, 95, 0.82) 48%, rgba(14, 85, 140, 0.66) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 104px 0 96px;
            color: #fff;
        }

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

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            background: rgba(255, 255, 255, 0.12);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, 0.88);
        }

        .breadcrumb a {
            transition: color 0.2s;
        }

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

        .breadcrumb span {
            margin: 0 2px;
            color: rgba(255, 255, 255, 0.5);
        }

        .page-hero-tag {
            display: inline-block;
            background: rgba(245, 158, 11, 0.18);
            border: 1px solid rgba(245, 158, 11, 0.45);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 500;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }

        .page-hero h1 {
            font-size: 46px;
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .page-hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 660px;
            line-height: 1.8;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            max-width: 640px;
        }

        .hero-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-metric strong {
            font-size: 22px;
            font-weight: 800;
            color: var(--accent);
        }

        .hero-metric span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.68);
        }

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

        .section-head {
            max-width: 720px;
            margin-bottom: 50px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 14px;
            color: var(--text);
            letter-spacing: 0.2px;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ============ Category Cards ============ */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            box-shadow: var(--shadow);
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #bbd7ed;
        }

        .category-img {
            height: 180px;
            overflow: hidden;
            background: var(--primary-light);
            position: relative;
        }

        .category-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.55s ease;
        }

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

        .category-img .img-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
        }

        .category-body {
            padding: 26px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .category-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
            flex: 1;
        }

        .category-badge {
            display: inline-block;
            width: fit-content;
            margin-top: 16px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 999px;
        }

        /* ============ Process Section ============ */
        .process-section {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .step-card {
            position: relative;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 34px 22px 26px;
            border: 1px solid var(--border);
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: #c6dcf0;
        }

        .step-num {
            width: 46px;
            height: 46px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #1b8ecb);
            color: #fff;
            font-weight: 800;
            font-size: 17px;
            border-radius: 14px;
            box-shadow: 0 6px 16px rgba(14, 109, 181, 0.22);
        }

        .step-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ============ Stats ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .stat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .stat-icon {
            font-size: 28px;
            margin-bottom: 8px;
        }

        .stat-value {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }

        .stat-desc {
            font-size: 12.5px;
            color: var(--text-mute);
            margin-top: 6px;
            line-height: 1.6;
        }

        /* ============ Content Articles ============ */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .content-card {
            display: flex;
            gap: 20px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .content-thumb {
            width: 140px;
            height: 108px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-light);
        }

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

        .content-meta {
            font-size: 12px;
            color: var(--text-mute);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .content-meta .meta-tag {
            background: var(--accent-light);
            color: #b45309;
            font-weight: 500;
            padding: 2px 8px;
            border-radius: 6px;
        }

        .content-info h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
            line-height: 1.5;
        }

        .content-info p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .content-link {
            margin-top: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: color 0.2s;
        }

        .content-link:hover {
            color: var(--accent);
        }

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

        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .faq-item:hover {
            border-color: #c6dcf0;
            box-shadow: 0 6px 18px rgba(24, 49, 75, 0.06);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            transition: color 0.2s;
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            color: var(--primary);
            font-weight: 400;
            flex-shrink: 0;
            margin-left: 16px;
            transition: transform 0.3s ease;
        }

        .faq-item[open] summary::after {
            content: '−';
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 26px 22px;
            font-size: 14.5px;
            color: var(--text-light);
            line-height: 1.85;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(120deg, #0a4f88 0%, #0e6db5 60%, #1b8ecb 100%);
            color: #fff;
            border-radius: 28px;
            margin: var(--section-space) auto;
            max-width: calc(var(--container) - 48px);
            padding: 64px 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 280px;
            height: 280px;
            background: rgba(245, 158, 11, 0.10);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 16px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-btn-primary {
            display: inline-block;
            background: var(--accent);
            color: #17293b;
            padding: 14px 38px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.3s ease;
            box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14);
        }

        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
            background: #fbbf24;
        }

        .cta-btn-ghost {
            display: inline-block;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.65);
            color: #fff;
            padding: 13px 34px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .cta-btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #102033;
            color: #b9c6d4;
            padding: 70px 0 0;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 52px;
            padding-bottom: 52px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand .brand .brand-text {
            color: #fff;
        }

        .footer-brand .brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), #1b8ecb);
            color: #fff;
            box-shadow: 0 6px 14px rgba(14, 109, 181, 0.3);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            max-width: 340px;
            color: #93a7bb;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #b9c6d4;
            transition: color 0.25s;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #8fa3b7;
        }

        .footer-bottom a {
            color: #8fa3b7;
            transition: color 0.25s;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            :root {
                --section-space: 84px;
            }

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

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

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

            .main-nav {
                gap: 4px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .search-box {
                display: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 70px;
            }

            .header-inner {
                height: auto;
                flex-wrap: wrap;
                padding: 14px 0;
                position: relative;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0;
                gap: 4px;
                border-top: 1px solid var(--border);
                margin-top: 12px;
            }

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

            .nav-link {
                width: 100%;
                border-radius: 10px;
                padding: 10px 14px;
            }

            .header-actions {
                display: none;
            }

            .page-hero {
                padding: 72px 0 64px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero-sub {
                font-size: 15.5px;
            }

            .hero-metrics {
                gap: 20px;
            }

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

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

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

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

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

            .content-thumb {
                width: 100%;
                height: 170px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .cta-section {
                margin: 50px 16px;
                padding: 44px 24px;
                border-radius: 20px;
            }

            .cta-section h2 {
                font-size: 25px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 58px;
            }

            .section-title {
                font-size: 26px;
            }

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

            .page-hero h1 {
                font-size: 27px;
                letter-spacing: 0.3px;
            }

            .page-hero-sub {
                font-size: 14.5px;
            }

            .brand-text {
                font-size: 18px;
            }

            .brand-icon {
                width: 40px;
                height: 40px;
                font-size: 16px;
                border-radius: 11px;
            }

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

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

            .category-body {
                padding: 22px 18px 20px;
            }

            .category-img {
                height: 160px;
            }

            .cta-section {
                padding: 38px 20px;
            }

            .cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .cta-btn-primary,
            .cta-btn-ghost {
                width: 100%;
                text-align: center;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: article */
:root{
  --primary:#2563eb;
  --primary-dark:#1e40af;
  --primary-light:#eff6ff;
  --accent:#f59e0b;
  --accent-light:#fffbeb;
  --bg:#f1f5f9;
  --surface:#ffffff;
  --text:#0f172a;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 24px rgba(30,64,175,.08);
  --shadow-hover:0 12px 36px rgba(30,64,175,.14);
  --space:24px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 28px;font-weight:600;cursor:pointer;transition:all .25s ease;line-height:1.4;letter-spacing:.2px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(37,99,235,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(37,99,235,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(37,99,235,.18)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#1c1917;box-shadow:0 8px 20px rgba(245,158,11,.24)}
.btn-accent:hover{background:#d97706;color:#fff;transform:translateY(-2px)}
.btn-sm{padding:8px 22px;font-size:14px}
.btn-lg{padding:15px 36px;font-size:16px}
.btn:focus-visible,.nav-link:focus-visible,a:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}
.tag{display:inline-flex;align-items:center;padding:4px 14px;border-radius:999px;background:var(--primary-light);color:var(--primary-dark);font-size:13px;font-weight:500}
.tag-accent{background:var(--accent-light);color:#92400e}
.text-weak{color:var(--text-weak)}
.section{padding:72px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-tag{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;padding:6px 16px;border-radius:999px;letter-spacing:.5px;margin-bottom:14px}
.section-title{font-size:30px;font-weight:800;line-height:1.3;margin-bottom:12px;letter-spacing:-.5px}
.section-desc{color:var(--text-weak);font-size:16px;line-height:1.7}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.section-head.center .section-tag{margin-left:auto;margin-right:auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid rgba(226,232,240,.7);box-shadow:0 2px 18px rgba(15,23,42,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#60a5fa);color:#fff;font-weight:800;font-size:16px;display:flex;align-items:center;justify-content:center;letter-spacing:-.5px;box-shadow:0 6px 16px rgba(37,99,235,.3)}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.3px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{padding:10px 18px;border-radius:999px;color:var(--text);font-weight:500;font-size:15px;transition:all .2s ease;white-space:nowrap}
.nav-link:hover{background:var(--primary-light);color:var(--primary)}
.nav-link.active{background:var(--primary);color:#fff;font-weight:600;box-shadow:0 4px 12px rgba(37,99,235,.22)}
.header-actions{display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:4px 4px 4px 16px;transition:border-color .2s ease,box-shadow .2s ease}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.search-box input{border:none;background:transparent;outline:none;font-size:14px;color:var(--text);width:150px;padding:4px 0}
.search-box input::placeholder{color:#94a3b8}
.search-btn{background:var(--primary);color:#fff;border:none;border-radius:999px;padding:8px 18px;font-weight:600;font-size:13px;cursor:pointer;transition:background .2s}
.search-btn:hover{background:var(--primary-dark)}
.nav-toggle{display:none;background:none;border:2px solid var(--border);border-radius:10px;width:44px;height:44px;font-size:20px;cursor:pointer;color:var(--text);align-items:center;justify-content:center;transition:all .2s}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.page-banner{position:relative;padding:70px 0 60px;background:linear-gradient(135deg,rgba(37,99,235,.92),rgba(30,64,175,.88)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.page-banner::after{content:'';position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.08);pointer-events:none}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.75);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.85);transition:color .2s}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px}
.page-title{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.8px;margin-bottom:18px;max-width:860px}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:14px;color:rgba(255,255,255,.85)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.5)}
.article-layout{padding:56px 0 72px}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.article-main{min-width:0}
.article-body{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:40px 44px;box-shadow:var(--shadow)}
.article-body h2{font-size:24px;font-weight:800;margin:32px 0 16px;padding-left:16px;border-left:4px solid var(--primary);line-height:1.4}
.article-body h3{font-size:19px;font-weight:700;margin:26px 0 12px}
.article-body p{margin-bottom:18px;color:#334155;font-size:15.5px}
.article-body ul,.article-body ol{margin:0 0 20px 24px;color:#334155}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:12px;box-shadow:var(--shadow);margin:24px 0}
.article-body blockquote{border-left:4px solid var(--accent);background:var(--accent-light);padding:18px 22px;border-radius:0 12px 12px 0;margin:24px 0;color:#78350f;font-size:15px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-body th{background:var(--primary-light);color:var(--primary-dark);font-weight:600;text-align:left;padding:12px 14px;border:1px solid var(--border)}
.article-body td{padding:12px 14px;border:1px solid var(--border);color:#334155}
.article-body code{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-size:13px;color:var(--primary-dark)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-dark)}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--border)}
.article-aside{display:flex;flex-direction:column;gap:24px;position:sticky;top:90px}
.aside-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.aside-title{font-size:16px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.aside-title::before{content:'';width:4px;height:18px;border-radius:4px;background:var(--primary)}
.aside-list{list-style:none}
.aside-list li{padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;color:var(--text-weak);display:flex;justify-content:space-between;gap:12px}
.aside-list li:last-child{border-bottom:none}
.aside-list li strong{color:var(--text);font-weight:600}
.aside-guide-links{display:flex;flex-direction:column;gap:12px}
.aside-guide-links a{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:12px;border:1px solid var(--border);font-size:14px;font-weight:600;transition:all .25s ease;background:var(--surface)}
.aside-guide-links a:hover{border-color:var(--primary);background:var(--primary-light);transform:translateX(4px)}
.aside-guide-links a .guide-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.guide-icon-blue{background:var(--primary-light);color:var(--primary)}
.guide-icon-amber{background:var(--accent-light);color:#b45309}
.aside-contact{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;text-align:center}
.aside-contact .aside-title{color:#fff}
.aside-contact .aside-title::before{background:rgba(255,255,255,.6)}
.aside-contact p{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:18px}
.value-section{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.value-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:all .3s ease}
.value-card:hover{background:var(--surface);border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.value-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.value-card:nth-child(2) .value-icon{background:var(--accent-light);color:#b45309}
.value-card:nth-child(3) .value-icon{background:#ecfdf5;color:#059669}
.value-number{font-size:34px;font-weight:800;color:var(--primary);line-height:1.1;margin-bottom:10px;letter-spacing:-1px}
.value-card:nth-child(2) .value-number{color:#b45309}
.value-card:nth-child(3) .value-number{color:#059669}
.value-title{font-size:18px;font-weight:700;margin-bottom:8px}
.value-desc{font-size:14px;color:var(--text-weak);line-height:1.6}
.related-section{background:var(--bg)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s ease;display:block}
.related-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.related-cover{position:relative;height:180px;overflow:hidden}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-cover img{transform:scale(1.05)}
.related-cat{position:absolute;top:14px;left:14px;background:rgba(37,99,235,.92);color:#fff;font-size:12px;font-weight:600;padding:5px 14px;border-radius:999px;backdrop-filter:blur(4px)}
.related-content{padding:22px}
.related-content h3{font-size:16px;font-weight:700;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-content p{font-size:13.5px;color:var(--text-weak);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;line-height:1.6}
.related-date{font-size:12.5px;color:#94a3b8;display:flex;align-items:center;gap:6px}
.empty-tip{grid-column:1/-1;text-align:center;padding:40px;background:var(--surface);border-radius:var(--radius);border:1px dashed var(--border);color:var(--text-weak)}
.guide-section{background:var(--surface)}
.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.guide-card{border:1px solid var(--border);border-radius:var(--radius);padding:34px;position:relative;overflow:hidden;transition:all .3s ease;background:linear-gradient(180deg,var(--surface),var(--bg))}
.guide-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--primary);opacity:.8}
.guide-card:nth-child(2)::before{background:var(--accent)}
.guide-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:var(--primary)}
.guide-icon-lg{width:60px;height:60px;border-radius:16px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px}
.guide-card:nth-child(2) .guide-icon-lg{background:var(--accent-light);color:#b45309}
.guide-card h3{font-size:21px;font-weight:800;margin-bottom:10px}
.guide-card p{color:var(--text-weak);font-size:14.5px;margin-bottom:20px;line-height:1.7}
.guide-list{list-style:none;margin-bottom:24px}
.guide-list li{padding:8px 0;font-size:14px;color:#334155;display:flex;align-items:flex-start;gap:10px}
.guide-list li::before{content:'✓';color:var(--primary);font-weight:700;flex-shrink:0}
.guide-card:nth-child(2) .guide-list li::before{color:var(--accent)}
.faq-section{background:var(--bg)}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:box-shadow .3s ease}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 26px;background:none;border:none;cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:var(--text);transition:background .2s}
.faq-q:hover{background:var(--primary-light)}
.faq-q .faq-arrow{width:32px;height:32px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform .3s ease;flex-shrink:0;color:var(--primary)}
.faq-item.open .faq-arrow{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-a{display:none;padding:0 26px 22px;color:var(--text-weak);font-size:14.5px;line-height:1.8;border-top:1px dashed var(--border);padding-top:16px;margin-top:2px}
.faq-item.open .faq-a{display:block}
.cta-section{padding:80px 0;background:linear-gradient(135deg,rgba(37,99,235,.94),rgba(30,64,175,.92)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
.cta-section::after{content:'';position:absolute;left:10%;top:-60px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.06);pointer-events:none}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:700px;margin:0 auto}
.cta-title{font-size:34px;font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.cta-desc{font-size:16px;color:rgba(255,255,255,.85);margin-bottom:32px;line-height:1.8}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:20px;font-size:13px;color:rgba(255,255,255,.65)}
.site-footer{background:#0f172a;color:#94a3b8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-icon{background:linear-gradient(135deg,#3b82f6,#06b6d4);box-shadow:none}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;max-width:360px}
.footer-title{font-size:15px;font-weight:600;color:#e2e8f0;margin-bottom:18px;letter-spacing:.3px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:#94a3b8;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{border-top:1px solid rgba(148,163,184,.15);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px}
.footer-bottom a{color:#64748b;transition:color .2s}
.footer-bottom a:hover{color:#fff}
.not-found{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:80px 40px;text-align:center;box-shadow:var(--shadow)}
.not-found-icon{width:80px;height:80px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:32px;margin:0 auto 24px}
.not-found h2{font-size:26px;font-weight:800;margin-bottom:12px}
.not-found p{color:var(--text-weak);margin-bottom:28px}
@media(max-width:1024px){
  .article-wrap{grid-template-columns:1fr}
  .article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .value-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .header-inner{height:64px}
  .main-nav{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:8px;border-bottom:1px solid var(--border);box-shadow:0 16px 32px rgba(15,23,42,.08);border-radius:0 0 16px 16px}
  .main-nav.open{display:flex}
  .nav-link{width:100%;text-align:left;padding:12px 18px}
  .nav-toggle{display:flex}
  .header-actions .search-box{display:none}
  .page-banner{padding:56px 0 48px}
  .page-title{font-size:28px}
  .article-body{padding:28px 22px}
  .value-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .guide-grid{grid-template-columns:1fr}
  .article-aside{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-title{font-size:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .section-title{font-size:21px}
  .page-title{font-size:23px}
  .article-body{padding:22px 18px;border-radius:12px}
  .article-body h2{font-size:20px}
  .guide-card{padding:26px 22px}
  .cta-section{padding:60px 0}
  .cta-btns .btn{width:100%}
  .breadcrumb .current{max-width:140px}
  .header-actions .btn-sm{display:none}
  .brand-text{font-size:17px}
  .brand-icon{width:38px;height:38px;font-size:14px}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0e6e5c;
  --primary-dark: #0a4f42;
  --primary-light: #e6f4f0;
  --secondary: #f5b942;
  --secondary-light: #fff4de;
  --bg: #f7f9f8;
  --bg-white: #ffffff;
  --bg-dark: #102a24;
  --text: #1e2a28;
  --text-weak: #5e6e6a;
  --border: #e3eae7;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(16, 42, 36, 0.06);
  --shadow-md: 0 8px 30px rgba(16, 42, 36, 0.08);
  --shadow-lg: 0 16px 50px rgba(16, 42, 36, 0.12);
  --space-section: 96px;
  --space-section-sm: 64px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease, opacity 0.25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 1rem; }
h1, h2, h3, h4 { line-height: 1.35; font-weight: 700; color: var(--text); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 通用组件 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(14, 110, 92, 0.25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(14, 110, 92, 0.35); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(14, 110, 92, 0.3); }
.btn-primary:focus-visible { outline: 3px solid rgba(14, 110, 92, 0.3); outline-offset: 2px; }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12); }
.btn-light:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-lg { padding: 17px 36px; font-size: 17px; }
.btn-sm { padding: 9px 22px; font-size: 14px; }

.section { padding: var(--space-section) 0; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-title { font-size: 34px; line-height: 1.3; margin-bottom: 14px; letter-spacing: -0.02em; }
.section-desc { font-size: 16px; color: var(--text-weak); line-height: 1.8; }

.badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  line-height: 1.6;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 20px rgba(16, 42, 36, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(14, 110, 92, 0.3);
}
.brand-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: -0.02em; }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.main-nav a:hover { background: var(--primary-light); color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 4px 14px rgba(14, 110, 92, 0.28); }

.header-actions { display: flex; align-items: center; gap: 16px; }
.search-box {
  display: flex;
  align-items: center;
  background: #f2f5f3;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 4px 4px 16px;
  gap: 8px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 110, 92, 0.12); background: #fff; }
.search-box input { border: none; outline: none; background: transparent; font-size: 14px; width: 150px; color: var(--text); }
.search-box input::placeholder { color: #94a29e; }
.search-box input:focus { outline: none; }
.search-btn {
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  transition: background 0.25s ease;
}
.search-btn:hover { background: var(--primary-dark); }

.nav-toggle { display: none; font-size: 24px; color: var(--text); padding: 6px 10px; border-radius: 8px; }
.nav-toggle:hover { background: var(--primary-light); }

/* ===== Hero / Banner ===== */
.page-hero {
  position: relative;
  padding: 110px 0 100px;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  isolation: isolate;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 42, 35, 0.92) 10%, rgba(10, 42, 35, 0.68) 60%, rgba(10, 42, 35, 0.35) 100%);
  z-index: -1;
}
.hero-inner { max-width: 700px; }
.hero-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(245, 185, 66, 0.25);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(245, 185, 66, 0.4);
  color: var(--secondary);
  margin-bottom: 22px;
}
.page-hero h1 { font-size: 46px; line-height: 1.25; color: #fff; margin-bottom: 18px; letter-spacing: -0.02em; }
.hero-desc { font-size: 18px; line-height: 1.8; color: rgba(255, 255, 255, 0.9); margin-bottom: 32px; max-width: 600px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== 方案概览 ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.overview-media { position: relative; }
.overview-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); object-fit: cover; width: 100%; aspect-ratio: 4/3; }
.overview-media .float-card {
  position: absolute;
  bottom: 24px;
  left: -24px;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 18px 24px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 14px;
}
.float-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.float-card-num { font-size: 22px; font-weight: 800; color: var(--text); line-height: 1.2; }
.float-card-txt { font-size: 13px; color: var(--text-weak); line-height: 1.4; }
.overview-content h2 { font-size: 36px; margin-bottom: 20px; }
.overview-content p { color: var(--text-weak); font-size: 16px; line-height: 1.9; margin-bottom: 20px; }
.overview-list { margin-top: 28px; display: grid; gap: 14px; }
.overview-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text); }
.overview-list li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== 方案分类卡片 ===== */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(14, 110, 92, 0.25); }
.card-cover { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease; }
.card-item:hover .card-cover img { transform: scale(1.05); }
.card-body { padding: 26px 26px 28px; }
.card-body h3 { font-size: 19px; margin-bottom: 10px; }
.card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; }
.card-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.card-link::after { content: '→'; transition: transform 0.25s ease; }
.card-link:hover::after { transform: translateX(4px); }
.card-item .badge-tag { margin-bottom: 12px; }

/* ===== 技术要点 ===== */
.tech-section { background: var(--bg-white); }
.tech-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.tech-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.tech-item:hover { background: #fff; border-color: rgba(14, 110, 92, 0.25); box-shadow: var(--shadow-md); }
.tech-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
}
.tech-item h3 { font-size: 18px; margin-bottom: 8px; }
.tech-item p { font-size: 14px; color: var(--text-weak); line-height: 1.75; }

/* ===== 流程 ===== */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 20px;
}
.step-item { position: relative; text-align: center; padding: 0 8px; }
.step-num {
  position: relative;
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 26px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(14, 110, 92, 0.25);
}
.step-item:not(:last-child) .step-num::after {
  content: '';
  position: absolute;
  top: 50%;
  left: calc(100% + 0px);
  width: calc(100% + 0px);
  height: 2px;
  background: var(--border);
  z-index: -1;
}
.step-item h3 { font-size: 17px; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }
.step-icon { font-size: 24px; margin-bottom: 10px; }

/* ===== 数据统计 ===== */
.stats-section {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 110, 92, 0.35), transparent 70%);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; position: relative; z-index: 1; }
.stat-item { text-align: center; }
.stat-num { font-size: 44px; font-weight: 800; color: var(--secondary); line-height: 1.2; display: block; margin-bottom: 8px; letter-spacing: -0.02em; }
.stat-label { font-size: 15px; color: rgba(255, 255, 255, 0.7); }
.stats-section .section-title { color: #fff; }
.stats-section .section-desc { color: rgba(255, 255, 255, 0.7); }

/* ===== 内容列表 ===== */
.article-card {
  display: flex;
  gap: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.article-cover { flex: 0 0 220px; overflow: hidden; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-cover:hover img { transform: scale(1.04); }
.article-info { flex: 1; padding: 24px 30px; display: flex; flex-direction: column; justify-content: center; }
.article-meta { font-size: 13px; color: var(--text-weak); margin-bottom: 8px; display: flex; gap: 12px; align-items: center; }
.article-meta .tag { background: var(--primary-light); color: var(--primary); padding: 2px 12px; border-radius: 999px; }
.article-info h3 { font-size: 20px; margin-bottom: 10px; transition: color 0.25s ease; }
.article-info h3:hover { color: var(--primary); }
.article-info p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 14px; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(14, 110, 92, 0.2); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: background 0.25s ease;
  text-align: left;
}
.faq-question:hover { background: var(--primary-light); }
.faq-question::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 26px 24px; color: var(--text-weak); font-size: 15px; line-height: 1.85; }
.faq-answer p { margin-bottom: 10px; }
.faq-answer ul { list-style: disc; padding-left: 20px; margin-top: 6px; }
.faq-answer ul li { margin-bottom: 4px; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; }
.cta-card {
  background: linear-gradient(120deg, var(--primary-dark), var(--primary));
  border-radius: 28px;
  padding: 56px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.cta-content { position: relative; z-index: 1; }
.cta-content h2 { font-size: 32px; color: #fff; margin-bottom: 12px; }
.cta-content p { font-size: 16px; color: rgba(255, 255, 255, 0.8); margin-bottom: 0; }
.cta-actions { display: flex; gap: 14px; flex-shrink: 0; position: relative; z-index: 1; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: rgba(255, 255, 255, 0.7); padding: 60px 0 0; margin-top: 60px; }
.site-footer .brand-text { color: #fff; }
.site-footer .brand-icon { background: rgba(255, 255, 255, 0.15); color: var(--secondary); box-shadow: none; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}
.footer-brand p { font-size: 15px; line-height: 1.8; margin-top: 16px; color: rgba(255, 255, 255, 0.5); }
.footer-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.5); transition: color 0.25s ease, padding-left 0.25s ease; }
.footer-links a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.4); }
.footer-bottom a:hover { color: var(--secondary); }

/* ===== 内部锚点 ===== */
#contact { scroll-margin-top: 80px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .header-actions .search-box { display: none; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-wrap { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .step-item:nth-child(2) .step-num::after { display: none; }
  .tech-wrap { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 38px; }
  .cta-card { padding: 44px 40px; flex-direction: column; text-align: center; }
  .overview-grid { grid-template-columns: 1fr; gap: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-section: 64px; --space-section-sm: 48px; }
  .section-title { font-size: 28px; }
  .header-inner { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 12px; }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 12px 0 8px;
  }
  .main-nav.show { display: flex; }
  .main-nav a { width: 100%; padding: 10px 14px; }
  .header-actions { margin-left: auto; }
  .header-actions .btn-sm { display: none; }
  .nav-toggle { display: block; }
  .page-hero { padding: 72px 0 64px; }
  .page-hero h1 { font-size: 32px; }
  .hero-desc { font-size: 16px; }
  .card-grid { grid-template-columns: 1fr; gap: 20px; }
  .article-card { flex-direction: column; }
  .article-cover { flex: none; height: 180px; }
  .article-cover img { height: 100%; }
  .article-info { padding: 20px 22px; }
  .tech-wrap { grid-template-columns: 1fr; }
  .tech-item { padding: 20px; }
  .stats-grid { gap: 28px; }
  .stat-num { font-size: 34px; }
  .cta-card { padding: 36px 24px; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
  .overview-media .float-card { bottom: 16px; left: 16px; padding: 14px 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .steps-wrap { grid-template-columns: 1fr; }
  .step-item { padding: 0 20px; }
  .step-item:not(:last-child) .step-num::after { display: none; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-text { font-size: 17px; }
  .page-hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .section-desc { font-size: 15px; }
  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer { padding: 0 20px 20px; font-size: 14px; }
  .tech-item { flex-direction: column; gap: 14px; }
  .tech-icon { width: 48px; height: 48px; font-size: 20px; }
  .stat-num { font-size: 28px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-label { font-size: 13px; }
  .overview-content h2 { font-size: 26px; }
  .overview-media .float-card { bottom: 12px; left: 12px; padding: 12px 14px; }
  .float-card-num { font-size: 18px; }
  .float-card-txt { font-size: 12px; }
  .btn-lg { padding: 14px 28px; font-size: 16px; }
}