/* roulang page: index */
:root{--primary:#ff4655;--primary-dark:#cc3340;--primary-light:#ff6b77;--secondary:#00e5ff;--dark:#0b1120;--main:#0f172a;--card:#151f31;--card-h:#1a2639;--border:#1e2d42;--border-l:#2a3a52;--text:#e8eef2;--weak:#8b9bb4;--muted:#5a6b85;--radius:14px;--radius-s:8px;--radius-l:22px;--shadow:0 10px 30px rgba(0,0,0,.35);--shadow-h:0 16px 40px rgba(255,70,85,.16);--tr:all .3s cubic-bezier(.4,0,.2,1)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--dark);color:var(--text);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:var(--tr)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:90px 0}
.section-tag{display:inline-block;background:rgba(255,70,85,.12);border:1px solid rgba(255,70,85,.35);color:var(--primary-light);padding:6px 16px;border-radius:100px;font-size:.82rem;font-weight:600;letter-spacing:1px;text-transform:uppercase}
.section-title{font-size:2.2rem;font-weight:800;color:var(--text);margin:16px 0 8px;letter-spacing:.5px}
.section-sub{color:var(--weak);font-size:1.05rem;max-width:640px;margin:0 auto}
.text-center{text-align:center}
.section-head{margin-bottom:48px}
.bg-dark-alt{background:#0d1424}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 32px;border-radius:100px;font-weight:700;font-size:1rem;border:2px solid transparent;transition:var(--tr);cursor:pointer}
.btn-primary-custom{background:var(--primary);color:#fff;box-shadow:0 8px 24px rgba(255,70,85,.35)}
.btn-primary-custom:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:0 12px 32px rgba(255,70,85,.45);color:#fff}
.btn-outline-custom{background:transparent;color:var(--text);border-color:var(--border-l)}
.btn-outline-custom:hover{border-color:var(--secondary);color:var(--secondary);transform:translateY(-3px)}
.btn-lg{padding:16px 44px;font-size:1.05rem}
/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(11,17,32,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-desktop{display:flex;align-items:center;justify-content:space-between;max-width:1280px;margin:0 auto;padding:0 24px}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.nav-right{justify-content:flex-end}
.nav-logo{flex-shrink:0;padding:16px 24px}
.nav-logo a{font-size:1.45rem;font-weight:800;color:var(--text);letter-spacing:1px;display:flex;align-items:center;gap:8px}
.nav-logo a i{color:var(--primary);font-size:1.3rem}
.nav-link{padding:8px 18px;border-radius:8px;font-weight:600;color:var(--weak);position:relative;white-space:nowrap}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{content:'';position:absolute;bottom:0;left:18px;right:18px;height:2px;background:var(--primary);border-radius:2px}
.nav-mobile{display:none}
/* Hero */
.hero{position:relative;padding:110px 0 90px;background:linear-gradient(135deg,#0b1120 0%,#0f172a 45%,#142038 100%);overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.18}
.hero::after{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(255,70,85,.15),transparent 70%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,70,85,.12);border:1px solid rgba(255,70,85,.4);color:var(--primary-light);padding:8px 22px;border-radius:100px;font-size:.85rem;font-weight:600;letter-spacing:1px}
.hero-title{font-size:3.2rem;font-weight:800;line-height:1.15;color:var(--text);margin:22px 0 16px}
.hero-title span{color:var(--primary)}
.hero-sub{font-size:1.1rem;color:var(--weak);max-width:660px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.hero-stats{display:flex;gap:48px;margin-top:60px;padding-top:36px;border-top:1px solid var(--border)}
.stat-item strong{font-size:2rem;font-weight:800;color:var(--text);display:block;line-height:1.2}
.stat-item strong em{color:var(--primary);font-style:normal;font-size:1rem}
.stat-item span{color:var(--weak);font-size:.9rem}
/* Service Cards */
.service-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-l);padding:38px 28px;height:100%;transition:var(--tr);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--tr)}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-h);border-color:rgba(255,70,85,.3)}
.service-card:hover::before{opacity:1}
.service-icon{width:64px;height:64px;border-radius:16px;background:rgba(255,70,85,.12);display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:var(--primary);margin-bottom:24px;transition:var(--tr)}
.service-card:hover .service-icon{background:var(--primary);color:#fff;transform:rotate(-6deg) scale(1.05)}
.service-card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px}
.service-card p{color:var(--weak);font-size:.95rem;line-height:1.7}
/* Category Cards */
.category-card{position:relative;display:block;border-radius:var(--radius-l);overflow:hidden;height:420px;transition:var(--tr);background:var(--card);border:1px solid var(--border)}
.category-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-h);border-color:rgba(255,70,85,.35)}
.category-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;opacity:.75}
.category-card:hover img{transform:scale(1.06);opacity:.9}
.category-overlay{position:absolute;bottom:0;left:0;right:0;padding:36px 28px;background:linear-gradient(transparent,rgba(11,17,32,.95) 60%)}
.category-overlay h3{font-size:1.5rem;font-weight:800;color:#fff;margin-bottom:6px}
.category-overlay p{color:rgba(255,255,255,.75);font-size:.93rem;margin-bottom:16px}
.category-btn{display:inline-flex;align-items:center;gap:8px;color:var(--primary-light);font-weight:700;font-size:.95rem}
.category-btn i{transition:transform .3s ease}
.category-card:hover .category-btn i{transform:translateX(6px)}
/* News Cards */
.news-card{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;height:100%;transition:var(--tr)}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:rgba(0,229,255,.25)}
.news-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.badge-cat{background:rgba(255,70,85,.14);color:var(--primary-light);padding:4px 14px;border-radius:100px;font-size:.78rem;font-weight:600}
.news-date{color:var(--muted);font-size:.85rem}
.news-card h3{font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:8px;line-height:1.5}
.news-card p{color:var(--weak);font-size:.9rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-link{display:inline-flex;align-items:center;gap:6px;color:var(--secondary);font-weight:700;font-size:.9rem;margin-top:16px}
.news-link i{transition:transform .3s ease}
.news-card:hover .news-link i{transform:translateX(6px)}
.empty-block{background:var(--card);border:1px dashed var(--border-l);border-radius:var(--radius);padding:60px 20px;text-align:center;color:var(--weak);font-size:1rem}
/* Process */
.process-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:20px}
.process-step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-l);padding:42px 28px;text-align:center;position:relative;transition:var(--tr)}
.process-step:hover{border-color:rgba(255,70,85,.3);transform:translateY(-4px)}
.step-num{font-size:2.6rem;font-weight:800;color:rgba(255,70,85,.3);display:block;margin-bottom:12px;line-height:1}
.process-step h3{font-size:1.25rem;font-weight:700;margin-bottom:10px}
.process-step p{color:var(--weak);font-size:.93rem}
/* HUD panel */
.hud-panel{background:linear-gradient(135deg,#111c2e 0%,#0d1424 100%);border:1px solid var(--border-l);border-radius:var(--radius-l);padding:60px 48px;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;overflow:hidden}
.hud-panel::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.hud-panel::after{content:'';position:absolute;top:-60%;right:-30%;width:500px;height:500px;background:radial-gradient(circle,rgba(0,229,255,.08),transparent 70%);pointer-events:none}
.hud-item{text-align:center;position:relative;z-index:1}
.hud-label{font-size:.85rem;color:var(--weak);letter-spacing:2px;text-transform:uppercase;display:block;margin-bottom:8px}
.hud-value{font-size:2.6rem;font-weight:800;color:#fff;line-height:1.2;display:block}
.hud-value em{font-style:normal;color:var(--primary);font-size:1.4rem}
.hud-note{font-size:.82rem;color:var(--weak);display:block;margin-top:6px}
/* Features alt blocks */
.feature-row{align-items:center;padding:20px 0}
.feature-img{border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow)}
.feature-img img{width:100%;height:380px;object-fit:cover}
.feature-content h2{font-size:1.8rem;font-weight:800;margin-bottom:16px}
.feature-content p{color:var(--weak);font-size:1rem;line-height:1.8;margin-bottom:20px}
.feature-list{list-style:none;padding:0;display:grid;gap:12px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:.95rem;font-weight:500}
.feature-list li i{color:var(--secondary);margin-top:4px}
/* FAQ */
.accordion-item{background:var(--card);border:1px solid var(--border)!important;border-radius:var(--radius)!important;margin-bottom:12px;overflow:hidden}
.accordion-button{background:var(--card)!important;color:var(--text)!important;font-weight:700;font-size:1rem;padding:20px 24px;box-shadow:none!important}
.accordion-button:not(.collapsed){color:var(--primary)!important}
.accordion-button::after{filter:brightness(0) invert(1) sepia(1) saturate(5) hue-rotate(310deg)!important}
.accordion-body{background:var(--card);color:var(--weak);font-size:.95rem;line-height:1.8;padding:0 24px 24px}
/* CTA */
.cta-box{background:linear-gradient(135deg,rgba(255,70,85,.18),rgba(0,229,255,.1)),var(--card);border:1px solid rgba(255,70,85,.25);border-radius:var(--radius-l);padding:70px 60px;text-align:center;position:relative;overflow:hidden}
.cta-box::after{content:'';position:absolute;bottom:-40%;left:50%;transform:translateX(-50%);width:600px;height:300px;background:radial-gradient(ellipse,rgba(255,70,85,.16),transparent 70%)}
.cta-box h2{font-size:1.9rem;font-weight:800;margin-bottom:12px}
.cta-box p{color:var(--weak);font-size:1.05rem;margin-bottom:32px}
.cta-box .btn{position:relative;z-index:2}
/* Footer */
.site-footer{background:#080d16;border-top:1px solid var(--border);padding:70px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr;gap:48px;padding-bottom:50px}
.footer-brand h3{font-size:1.4rem;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.footer-brand h3 i{color:var(--primary)}
.footer-brand p{color:var(--weak);font-size:.92rem;max-width:360px}
.footer-links h4{font-size:1rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-links a{display:block;color:var(--weak);font-size:.92rem;padding:6px 0}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);padding:22px 0;text-align:center;color:var(--muted);font-size:.85rem}
/* Mobile menu */
@media(max-width:992px){
.nav-desktop{display:none}
.nav-mobile{display:block;padding:0 20px}
.nav-mobile-header{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.nav-logo-mobile{font-size:1.3rem;font-weight:800;color:var(--text);display:flex;align-items:center;gap:8px}
.nav-logo-mobile i{color:var(--primary)}
.nav-mobile-toggle{background:transparent;border:1px solid var(--border-l);border-radius:10px;color:var(--text);width:44px;height:44px;font-size:1.1rem;display:flex;align-items:center;justify-content:center;cursor:pointer}
.nav-mobile-menu{display:none;flex-direction:column;padding:8px 0 20px;border-bottom:1px solid var(--border)}
.nav-mobile-menu.show{display:flex}
.nav-link-mobile{color:var(--weak);font-weight:600;padding:12px 10px;border-radius:8px}
.nav-link-mobile:hover,.nav-link-mobile.active{color:var(--primary);background:rgba(255,70,85,.08)}
.hero{padding:80px 0 60px}
.hero-title{font-size:2.4rem}
.hero-stats{gap:20px;flex-wrap:wrap}
.process-steps{grid-template-columns:1fr}
.hud-panel{grid-template-columns:repeat(2,1fr);padding:40px 30px}
}
@media(max-width:768px){
.section{padding:60px 0}
.section-title{font-size:1.7rem}
.hero-title{font-size:2rem}
.hero-sub{font-size:1rem}
.hero-stats{gap:16px}
.stat-item strong{font-size:1.6rem}
.footer-top{grid-template-columns:1fr}
.feature-img img{height:260px}
.cta-box{padding:50px 28px}
.cta-box h2{font-size:1.5rem}
}
@media(max-width:520px){
.container{padding:0 16px}
.nav-logo-mobile{font-size:1.15rem}
.hero{padding:60px 0 50px}
.hero-title{font-size:1.7rem}
.hero-actions .btn{width:100%}
.hero-stats{flex-direction:column;gap:18px}
.hud-panel{grid-template-columns:1fr}
.process-steps{gap:16px}
.hud-value{font-size:2rem}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #0099cc;
            --primary-glow: rgba(0, 212, 255, 0.28);
            --accent: #a78bfa;
            --accent-2: #f59e0b;
            --bg: #0b0e14;
            --bg-2: #11161f;
            --bg-3: #161d2a;
            --card-bg: #151b27;
            --card-bg-2: #19212f;
            --text: #eaf1f8;
            --text-dim: #8b98ab;
            --border: rgba(255, 255, 255, 0.07);
            --border-light: rgba(0, 212, 255, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 25px rgba(0, 212, 255, 0.12);
            --transition: 0.3s ease;
            --font: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--text);
            transition: color 0.3s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

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

        section {
            padding: 80px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid var(--border-light);
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-head .eyebrow i {
            font-size: 12px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--text-dim);
            font-size: 17px;
            line-height: 1.7;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 11, 17, 0.86);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            height: 72px;
            padding: 0 24px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .nav-logo {
            flex-shrink: 0;
            padding: 0 12px;
        }

        .nav-logo a {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
        }

        .nav-logo a i {
            color: var(--primary);
            font-size: 22px;
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }

        .site-header .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dim);
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .site-header .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.04);
        }

        .site-header .nav-link.active {
            color: var(--primary);
            border-color: var(--border-light);
            background: rgba(0, 212, 255, 0.08);
        }

        /* 移动端导航 */
        .nav-mobile {
            display: none;
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 130px 0 100px;
            background-size: cover;
            background-position: center 30%;
            border-bottom: 1px solid var(--border);
        }

        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.55) 0%, rgba(11, 14, 20, 0.75) 60%, var(--bg) 100%);
            pointer-events: none;
        }

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

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid var(--border-light);
            margin-bottom: 20px;
        }

        .page-banner h1 {
            font-size: 52px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 18px;
        }

        .page-banner h1 span {
            color: var(--primary);
        }

        .page-banner .banner-desc {
            max-width: 680px;
            margin: 0 auto;
            font-size: 18px;
            color: var(--text-dim);
            line-height: 1.8;
        }

        .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 42px;
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
            padding: 16px 28px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
            min-width: 130px;
        }

        .banner-stat .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            font-family: "Consolas", "Courier New", monospace;
        }

        .banner-stat .label {
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        /* ===== 板块工具 ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid var(--border-light);
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        /* ===== 入口卡片区 ===== */
        .entry-cards {
            background: var(--bg-2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .entry-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .entry-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .entry-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow);
        }

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

        .entry-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 20px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid var(--border-light);
            margin-bottom: 18px;
        }

        .entry-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .entry-card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 使用路径 ===== */
        .path-section {
            background: var(--bg);
            position: relative;
        }

        .path-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.35), transparent);
        }

        .path-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .path-item {
            background: var(--bg-3);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

        .path-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .path-step {
            font-family: "Consolas", "Courier New", monospace;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .path-item .icon {
            width: 64px;
            height: 64px;
            margin: 16px auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 24px;
            color: var(--primary);
            background: rgba(0, 212, 255, 0.08);
            border: 1px solid var(--border-light);
        }

        .path-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .path-item p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .path-line {
            display: none;
        }

        /* ===== 对比面板 ===== */
        .compare-section {
            background: var(--bg-2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .compare-panel {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
        }

        .compare-table th {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            text-align: center;
            background: var(--bg-3);
            border-bottom: 1px solid var(--border);
            color: var(--text);
        }

        .compare-table th.highlight {
            background: rgba(0, 212, 255, 0.1);
            color: var(--primary);
            border-bottom: 1px solid var(--border-light);
        }

        .compare-table td {
            padding: 18px 24px;
            text-align: center;
            font-size: 14px;
            color: var(--text-dim);
            border-bottom: 1px solid var(--border);
        }

        .compare-table td:first-child {
            text-align: left;
            color: var(--text);
            font-weight: 500;
            background: var(--bg-3);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .fa-check {
            color: var(--primary);
            font-size: 16px;
        }

        .compare-table .fa-minus {
            color: var(--text-dim);
            font-size: 14px;
            opacity: 0.5;
        }

        /* ===== 热门内容 ===== */
        .content-cards {
            background: var(--bg);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .content-card .cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

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

        .content-card:hover .cover img {
            transform: scale(1.04);
        }

        .content-card .cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 14, 20, 0.85) 100%);
        }

        .content-card .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 4px 12px;
            font-size: 12px;
            border-radius: 50px;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid var(--border-light);
            color: var(--primary);
        }

        .content-card .body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card .body h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .content-card .body p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            flex: 1;
        }

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

        .content-card .meta a {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-item .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            background: none;
            border: none;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: background var(--transition);
        }

        .faq-item .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-item .faq-question i {
            color: var(--primary);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-item .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg);
            position: relative;
            padding: 100px 0;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(167, 139, 250, 0.08)), var(--bg-3);
            border: 1px solid var(--border-light);
            border-radius: 24px;
            padding: 60px 48px;
            text-align: center;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -20%;
            width: 60%;
            height: 220%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
        }

        .cta-box p {
            color: var(--text-dim);
            font-size: 16px;
            margin-bottom: 30px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
        }

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

        /* ===== 按钮 ===== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            background: var(--primary);
            color: #0a0e15;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-primary-custom:hover {
            background: #33dcff;
            border-color: #33dcff;
            color: #0a0e15;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-2);
            border-top: 1px solid var(--border);
            padding: 70px 0 30px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand h3 i {
            color: var(--primary);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text);
        }

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

        .footer-links a {
            font-size: 14px;
            color: var(--text-dim);
            padding: 4px 0;
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 26px;
            text-align: center;
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }

            .nav-mobile {
                display: block;
            }

            .nav-mobile-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                height: 64px;
                padding: 0 20px;
            }

            .nav-logo-mobile {
                font-size: 20px;
                font-weight: 700;
                color: var(--text);
                display: flex;
                align-items: center;
                gap: 8px;
            }

            .nav-logo-mobile i {
                color: var(--primary);
            }

            .nav-mobile-toggle {
                width: 42px;
                height: 42px;
                display: flex;
                align-items: center;
                justify-content: center;
                background: rgba(255, 255, 255, 0.04);
                border: 1px solid var(--border);
                border-radius: var(--radius-sm);
                color: var(--text);
                font-size: 18px;
                cursor: pointer;
                transition: all var(--transition);
            }

            .nav-mobile-toggle:hover {
                border-color: var(--border-light);
                color: var(--primary);
            }

            .nav-mobile-menu {
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
                background: var(--bg-2);
                border-top: 1px solid transparent;
            }

            .nav-mobile-menu.open {
                max-height: 400px;
                border-top-color: var(--border);
            }

            .nav-link-mobile {
                display: block;
                padding: 14px 20px;
                font-size: 15px;
                font-weight: 500;
                color: var(--text-dim);
                border-bottom: 1px solid var(--border);
                transition: all var(--transition);
            }

            .nav-link-mobile:last-child {
                border-bottom: none;
            }

            .nav-link-mobile:hover,
            .nav-link-mobile.active {
                color: var(--primary);
                background: rgba(0, 212, 255, 0.04);
                padding-left: 26px;
            }

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

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }

            .page-banner {
                padding: 100px 0 70px;
            }

            .page-banner h1 {
                font-size: 36px;
            }

            .page-banner .banner-desc {
                font-size: 15px;
            }

            .banner-stats {
                gap: 16px;
            }

            .banner-stat {
                padding: 12px 20px;
                min-width: 110px;
            }

            .banner-stat .num {
                font-size: 22px;
            }

            .section-head h2 {
                font-size: 28px;
            }

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

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

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

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }
        }

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

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

            .path-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .compare-panel {
                overflow-x: auto;
            }

            .compare-table {
                min-width: 600px;
            }

            .banner-stats {
                flex-direction: column;
                align-items: center;
            }

            .banner-stat {
                width: 100%;
                max-width: 220px;
            }

            .section-head h2 {
                font-size: 24px;
            }

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

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

        @media (max-width: 380px) {
            .page-banner h1 {
                font-size: 30px;
            }
        }

        /* ===== 焦点状态 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
  --primary: #00d4aa;
  --primary-dark: #00b894;
  --primary-deep: #009f83;
  --accent: #f0b90b;
  --accent-dark: #d4a308;
  --bg-dark: #0b1120;
  --bg-deep: #070d1a;
  --bg-card: #111a2e;
  --bg-card-hover: #16223a;
  --bg-elev: #182642;
  --text-light: #e5e9f0;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --border-line: rgba(148, 163, 184, 0.14);
  --border-glow: rgba(0, 212, 170, 0.28);
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 34px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 36px rgba(0, 212, 170, 0.1);
  --transition: all 0.3s ease;
  --section-gap: 80px;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
}
h1, h2, h3, h4, h5, h6 {
  color: #fff;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
p {
  color: var(--text-body);
}
.container {
  max-width: 1200px;
}

/* ========== 通用头部 ========== */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(0, 212, 170, 0.08);
  border: 1px solid rgba(0, 212, 170, 0.18);
  border-radius: 100px;
  padding: 6px 18px;
  margin-bottom: 16px;
}
.section-head .section-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0, 212, 170, 0.6);
}
.section-head h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  margin-bottom: 14px;
}
.section-head p {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* ========== 按钮 ========== */
.btn {
  --bs-btn-padding-y: 0.6rem;
  --bs-btn-padding-x: 1.6rem;
  border-radius: 100px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  --bs-btn-bg: var(--primary);
  --bs-btn-border-color: var(--primary);
  --bs-btn-hover-bg: var(--primary-dark);
  --bs-btn-hover-border-color: var(--primary-dark);
  --bs-btn-active-bg: var(--primary-deep);
  --bs-btn-active-border-color: var(--primary-deep);
  --bs-btn-disabled-bg: var(--primary);
  --bs-btn-disabled-border-color: var(--primary);
  color: #06251e;
}
.btn-primary:hover, .btn-primary:focus {
  color: #06251e;
  box-shadow: 0 0 24px rgba(0, 212, 170, 0.28);
  transform: translateY(-2px);
}
.btn-outline-light {
  --bs-btn-color: #e5e9f0;
  --bs-btn-border-color: rgba(229, 233, 240, 0.35);
  --bs-btn-hover-bg: rgba(229, 233, 240, 0.1);
  --bs-btn-hover-border-color: #e5e9f0;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-bg: rgba(229, 233, 240, 0.18);
  --bs-btn-active-color: #fff;
}
.btn-lg {
  padding: 0.8rem 2.2rem;
  font-size: 1rem;
}
.btn:focus-visible {
  box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.3);
  outline: none;
}

/* ========== 头部导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(7, 13, 26, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-line);
}
.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 74px;
  position: relative;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}
.nav-left {
  justify-content: flex-end;
  margin-right: 24px;
}
.nav-right {
  justify-content: flex-start;
  margin-left: 24px;
}
.nav-logo {
  flex-shrink: 0;
}
.nav-logo a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}
.nav-logo a i {
  color: var(--primary);
  font-size: 1.25rem;
  filter: drop-shadow(0 0 10px rgba(0, 212, 170, 0.45));
}
.site-header .nav-link {
  color: var(--text-muted);
  padding: 0.55rem 1.15rem;
  border-radius: 100px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}
.site-header .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}
.site-header .nav-link.active {
  color: var(--primary);
  background: rgba(0, 212, 170, 0.1);
  font-weight: 600;
}
.site-header .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  border-radius: 4px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 212, 170, 0.6);
}
.nav-mobile {
  display: none;
}

/* ========== 文章 Banner ========== */
.article-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 90px 0 72px;
  border-bottom: 1px solid var(--border-line);
}
.article-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 13, 26, 0.92) 0%, rgba(11, 17, 32, 0.8) 50%, rgba(7, 13, 26, 0.94) 100%);
}
.article-banner .container {
  position: relative;
  z-index: 1;
}
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.breadcrumb-nav a {
  color: var(--text-muted);
  transition: var(--transition);
}
.breadcrumb-nav a:hover {
  color: var(--primary);
}
.breadcrumb-nav span {
  color: var(--text-muted);
}
.breadcrumb-nav .current {
  color: var(--primary);
}
.badge-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.18), rgba(0, 212, 170, 0.08));
  border: 1px solid var(--border-glow);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 100px;
  padding: 5px 14px;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.article-banner h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  max-width: 860px;
  margin-bottom: 18px;
  line-height: 1.25;
}
.article-banner-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.article-banner-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.article-banner-meta i {
  color: var(--primary);
}

/* ========== 文章主体 ========== */
.article-main {
  padding: 60px 0 70px;
}
.card-hud {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}
.card-hud::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 82px;
  height: 3px;
  border-radius: 0 0 6px 6px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.7;
}
.article-content {
  padding: 44px 40px;
}
.article-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-body);
  word-break: break-word;
}
.article-body h2 {
  font-size: 1.45rem;
  color: #fff;
  font-weight: 700;
  margin: 2.4rem 0 1rem;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  border-radius: 0 4px 4px 0;
}
.article-body h3 {
  font-size: 1.22rem;
  color: #fff;
  font-weight: 700;
  margin: 1.9rem 0 0.8rem;
}
.article-body p {
  margin-bottom: 1.25rem;
  color: var(--text-body);
}
.article-body ul, .article-body ol {
  margin: 1rem 0 1.4rem 1.3rem;
}
.article-body li {
  margin-bottom: 0.55rem;
}
.article-body img {
  max-width: 100%;
  border-radius: 14px;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}
.article-body blockquote {
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  background: rgba(240, 185, 11, 0.06);
  border-radius: 0 14px 14px 0;
  margin: 1.6rem 0;
  color: #d6dce4;
  font-style: italic;
}
.article-body blockquote p {
  color: #d6dce4;
  margin-bottom: 0;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover {
  color: #fff;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
.article-body table th, .article-body table td {
  border: 1px solid var(--border-line);
  padding: 10px 14px;
}
.article-body table th {
  background: var(--bg-elev);
  color: #fff;
}
.article-content-footer {
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--border-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.article-content-footer .tags i {
  color: var(--primary);
  margin-right: 6px;
}
.article-content-footer .share-links {
  display: flex;
  gap: 10px;
}
.share-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-line);
  color: var(--text-muted);
  transition: var(--transition);
}
.share-btn:hover {
  background: rgba(0, 212, 170, 0.15);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ========== 文章未找到 ========== */
.article-notfound {
  padding: 60px 30px;
  text-align: center;
}
.article-notfound i {
  font-size: 3.2rem;
  color: var(--primary);
  margin-bottom: 18px;
  opacity: 0.7;
  display: block;
}
.article-notfound h2 {
  font-size: 1.7rem;
  margin-bottom: 10px;
}
.article-notfound p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ========== 侧边栏 ========== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 26px;
  position: sticky;
  top: 100px;
}
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}
.sidebar-card:hover {
  border-color: rgba(0, 212, 170, 0.25);
  box-shadow: var(--shadow-glow);
}
.sidebar-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-card h4::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-glow), transparent);
}
.sidebar-card h4 i {
  color: var(--primary);
  font-size: 0.95rem;
}
.sidebar-card p {
  font-size: 0.92rem;
  color: var(--text-body);
  margin-bottom: 16px;
}
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 0.96rem;
  transition: var(--transition);
}
.sidebar-links a i {
  color: var(--primary);
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
}
.sidebar-links a:hover {
  background: rgba(0, 212, 170, 0.08);
  color: #fff;
  padding-left: 16px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-cloud span {
  display: inline-block;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-line);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: default;
}
.tag-cloud span:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(0, 212, 170, 0.06);
}
.tip-box {
  background: linear-gradient(135deg, rgba(240, 185, 11, 0.08), rgba(0, 212, 170, 0.04));
  border-color: rgba(240, 185, 11, 0.2);
}
.tip-box h4 i {
  color: var(--accent);
}
.tip-box p {
  margin-bottom: 0;
}

/* ========== 推荐栏目 ========== */
.recommend-section {
  padding: 80px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.recommend-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}
.recommend-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.recommend-card .card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.recommend-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.recommend-card:hover .card-img img {
  transform: scale(1.05);
}
.recommend-card .card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 13, 26, 0.55), transparent 55%);
}
.recommend-card .card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 12px;
  align-self: flex-start;
}
.tag-primary {
  background: rgba(0, 212, 170, 0.12);
  border: 1px solid rgba(0, 212, 170, 0.25);
  color: var(--primary);
}
.tag-accent {
  background: rgba(240, 185, 11, 0.12);
  border: 1px solid rgba(240, 185, 11, 0.25);
  color: var(--accent);
}
.tag-blue {
  background: rgba(99, 179, 237, 0.1);
  border: 1px solid rgba(99, 179, 237, 0.22);
  color: #63b3ed;
}
.recommend-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.recommend-card p {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex: 1;
}
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}
.link-more i {
  transition: transform 0.3s ease;
}
.recommend-card:hover .link-more i {
  transform: translateX(4px);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 80px 0;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-list .accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-list .accordion-item:first-of-type {
  border-radius: var(--radius-md) !important;
}
.faq-list .accordion-item:last-of-type {
  border-radius: var(--radius-md) !important;
}
.faq-list .accordion-item:hover {
  border-color: rgba(0, 212, 170, 0.25);
}
.faq-list .accordion-button {
  background: transparent;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  padding: 20px 24px;
  box-shadow: none;
  border: none;
  border-radius: 0 !important;
}
.faq-list .accordion-button:not(.collapsed) {
  background: rgba(0, 212, 170, 0.05);
  color: var(--primary);
}
.faq-list .accordion-button:focus {
  box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.16);
}
.faq-list .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300d4aa'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.faq-list .accordion-body {
  background: rgba(255, 255, 255, 0.015);
  color: var(--text-body);
  font-size: 0.95rem;
  padding: 0 24px 22px;
  border-top: 1px solid var(--border-line);
}

/* ========== CTA ========== */
.cta-section {
  padding: 86px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.1), transparent 70%);
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}
.cta-icon {
  width: 76px;
  height: 76px;
  margin: 0 auto 24px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.2), rgba(0, 212, 170, 0.05));
  border: 1px solid var(--border-glow);
  font-size: 1.8rem;
  color: var(--primary);
  box-shadow: var(--shadow-glow);
}
.cta-inner h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 14px;
}
.cta-inner p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 30px;
}
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-line);
  padding: 56px 0 30px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h3 i {
  color: var(--primary);
  font-size: 1.2rem;
}
.footer-brand p {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 420px;
}
.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.footer-bottom {
  border-top: 1px solid var(--border-line);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ========== 响应式 ========== */
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-logo a {
    font-size: 1.15rem;
  }
  .site-header .nav-link {
    padding: 0.5rem 0.8rem;
    font-size: 0.88rem;
  }
  .article-content {
    padding: 32px 28px;
  }
  .recommend-grid {
    gap: 18px;
  }
}
@media (max-width: 768px) {
  :root {
    --section-gap: 60px;
  }
  .nav-desktop {
    display: none;
  }
  .nav-mobile {
    display: block;
  }
  .nav-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 66px;
  }
  .nav-logo-mobile {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 800;
    color: #fff;
  }
  .nav-logo-mobile i {
    color: var(--primary);
  }
  .nav-mobile-toggle {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-line);
    border-radius: 12px;
    color: #fff;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  .nav-mobile-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
  }
  .nav-mobile-menu {
    display: none;
    padding: 10px 20px 18px;
    border-top: 1px solid var(--border-line);
  }
  .nav-mobile-menu.open {
    display: block;
  }
  .nav-link-mobile {
    display: block;
    padding: 13px 16px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 1rem;
    border-radius: 12px;
    transition: var(--transition);
  }
  .nav-link-mobile:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
  }
  .nav-link-mobile.active {
    color: var(--primary);
    background: rgba(0, 212, 170, 0.1);
  }
  .article-banner {
    padding: 56px 0 44px;
  }
  .article-main {
    padding: 40px 0 50px;
  }
  .article-content {
    padding: 28px 22px;
  }
  .article-sidebar {
    margin-top: 30px;
    position: static;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .faq-section, .recommend-section, .cta-section {
    padding: 56px 0;
  }
  .section-head {
    margin-bottom: 36px;
  }
}
@media (max-width: 520px) {
  .article-banner h1 {
    font-size: 1.5rem;
  }
  .article-banner-meta {
    gap: 12px;
    font-size: 0.85rem;
  }
  .article-content {
    padding: 24px 18px;
  }
  .article-body {
    font-size: 0.98rem;
  }
  .btn-lg {
    padding: 0.7rem 1.6rem;
    font-size: 0.95rem;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .cta-buttons .btn {
    width: 100%;
    max-width: 320px;
  }
}
@media (min-width: 769px) {
  .nav-mobile {
    display: none;
  }
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
    :root {
      --bg-primary: #0a0f1e;
      --bg-secondary: #101a33;
      --bg-card: #14203a;
      --bg-card-hover: #1b2a4a;
      --brand-primary: #e8b64c;
      --brand-secondary: #2dd4bf;
      --text-primary: #eef2ff;
      --text-secondary: #9aa7c7;
      --text-muted: #6b7a9c;
      --border-color: #26355c;
      --radius: 18px;
      --radius-sm: 10px;
      --shadow: 0 14px 44px rgba(0, 0, 0, 0.38);
      --shadow-hover: 0 18px 52px rgba(0, 0, 0, 0.48);
      --transition: all 0.3s ease;
    }

    /* ============ Reset / Base ============ */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

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

    .container {
      max-width: 1240px;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ============ 导航 ============ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 15, 30, 0.86);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(38, 53, 92, 0.5);
    }

    .nav-desktop {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 30px;
      height: 72px;
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 1;
    }

    .nav-right {
      justify-content: flex-end;
    }

    .nav-link {
      padding: 8px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: 8px;
      transition: var(--transition);
      position: relative;
    }

    .nav-link:hover {
      color: var(--brand-primary);
      background: rgba(232, 182, 76, 0.08);
    }

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

    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 50%;
      transform: translateX(-50%);
      width: 24px;
      height: 3px;
      background: var(--brand-primary);
      border-radius: 3px;
    }

    .nav-logo a {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-primary);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .nav-logo a i {
      color: var(--brand-primary);
      font-size: 22px;
      background: rgba(232, 182, 76, 0.12);
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
    }

    .nav-mobile {
      display: none;
    }

    /* ============ 移动端导航 ============ */
    @media (max-width: 1024px) {
      .nav-desktop {
        display: none;
      }

      .nav-mobile {
        display: block;
      }

      .nav-mobile-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 64px;
        padding: 0 24px;
      }

      .nav-logo-mobile {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 18px;
        font-weight: 800;
        color: var(--text-primary);
      }

      .nav-logo-mobile i {
        color: var(--brand-primary);
        font-size: 20px;
        background: rgba(232, 182, 76, 0.12);
        width: 34px;
        height: 34px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
      }

      .nav-mobile-toggle {
        background: none;
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        width: 40px;
        height: 40px;
        border-radius: 10px;
        font-size: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: var(--transition);
      }

      .nav-mobile-toggle:hover {
        border-color: var(--brand-primary);
        color: var(--brand-primary);
      }

      .nav-mobile-menu {
        display: none;
        flex-direction: column;
        padding: 10px 24px 24px;
        gap: 4px;
        background: rgba(10, 15, 30, 0.96);
        border-top: 1px solid rgba(38, 53, 92, 0.5);
      }

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

      .nav-link-mobile {
        padding: 12px 16px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 8px;
        transition: var(--transition);
      }

      .nav-link-mobile:hover {
        color: var(--brand-primary);
        background: rgba(232, 182, 76, 0.08);
      }

      .nav-link-mobile.active {
        color: var(--brand-primary);
        font-weight: 600;
        background: rgba(232, 182, 76, 0.1);
      }
    }

    /* ============ 页面 Hero ============ */
    .page-hero {
      position: relative;
      padding: 110px 0 100px;
      background: linear-gradient(135deg, rgba(10, 15, 30, 0.92), rgba(16, 26, 51, 0.88)),
        url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
      border-bottom: 1px solid var(--border-color);
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(232, 182, 76, 0.12);
      color: var(--brand-primary);
      border: 1px solid rgba(232, 182, 76, 0.3);
      padding: 6px 18px;
      border-radius: 40px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 20px;
    }

    .hero-badge i {
      font-size: 14px;
    }

    .page-hero h1 {
      font-size: 54px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 22px;
      letter-spacing: 0.5px;
      background: linear-gradient(120deg, #ffffff 20%, var(--brand-primary) 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .page-hero .lead-text {
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 620px;
      line-height: 1.85;
      margin-bottom: 34px;
    }

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

    .btn-main {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--brand-primary);
      color: #0a0f1e;
      padding: 14px 30px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 15px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 24px rgba(232, 182, 76, 0.25);
    }

    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 32px rgba(232, 182, 76, 0.35);
      color: #0a0f1e;
    }

    .btn-main:active {
      transform: translateY(0);
      box-shadow: 0 6px 16px rgba(232, 182, 76, 0.2);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: transparent;
      color: var(--text-primary);
      padding: 14px 30px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 15px;
      border: 1px solid var(--border-color);
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-ghost:hover {
      border-color: var(--brand-primary);
      color: var(--brand-primary);
      background: rgba(232, 182, 76, 0.06);
      transform: translateY(-2px);
    }

    .hero-stats-panel {
      background: rgba(16, 26, 51, 0.8);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      backdrop-filter: blur(14px);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-stats-panel::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
      border-radius: 3px 3px 0 0;
    }

    .hero-stats-panel h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 22px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .hero-stats-panel h3 i {
      color: var(--brand-secondary);
    }

    .stat-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14px 0;
      border-bottom: 1px solid rgba(38, 53, 92, 0.5);
    }

    .stat-item:last-child {
      border-bottom: none;
    }

    .stat-item .label {
      color: var(--text-secondary);
      font-size: 14px;
      font-weight: 500;
    }

    .stat-item .value {
      color: var(--brand-primary);
      font-size: 20px;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .stat-item .value i {
      font-size: 14px;
      color: var(--brand-secondary);
    }

    /* ============ 板块通用 ============ */
    .section {
      padding: 90px 0;
    }

    .section-alt {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-tag {
      display: inline-block;
      background: rgba(45, 212, 191, 0.12);
      color: var(--brand-secondary);
      border: 1px solid rgba(45, 212, 191, 0.25);
      border-radius: 40px;
      padding: 5px 18px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 36px;
      font-weight: 800;
      color: var(--text-primary);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

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

    /* ============ 核心模块卡片 ============ */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 34px 28px;
      height: 100%;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .feature-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--brand-primary), transparent);
      opacity: 0;
      transition: var(--transition);
    }

    .feature-card:hover {
      background: var(--bg-card-hover);
      border-color: rgba(232, 182, 76, 0.3);
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    .feature-card:hover::after {
      opacity: 1;
    }

    .feature-icon {
      width: 52px;
      height: 52px;
      background: rgba(232, 182, 76, 0.12);
      color: var(--brand-primary);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 22px;
      transition: var(--transition);
    }

    .feature-card:hover .feature-icon {
      background: var(--brand-primary);
      color: #0a0f1e;
      transform: rotate(-6deg) scale(1.05);
    }

    .feature-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .feature-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--brand-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }

    .feature-link:hover {
      color: var(--brand-primary);
      gap: 10px;
    }

    /* ============ 流程步骤 ============ */
    .process-wrapper {
      counter-reset: process;
    }

    .process-step {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px 28px;
      height: 100%;
      transition: var(--transition);
    }

    .process-step:hover {
      border-color: rgba(45, 212, 191, 0.35);
      box-shadow: var(--shadow);
      transform: translateY(-4px);
    }

    .process-num {
      font-size: 44px;
      font-weight: 800;
      color: rgba(232, 182, 76, 0.2);
      line-height: 1;
      margin-bottom: 18px;
      display: block;
    }

    .process-step h4 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 12px;
    }

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

    .process-line {
      display: none;
    }

    /* ============ 数据面板 ============ */
    .data-section {
      background: linear-gradient(135deg, rgba(10, 15, 30, 0.95), rgba(16, 26, 51, 0.92)),
        url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .data-panel {
      background: rgba(16, 26, 51, 0.75);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 44px 34px;
      backdrop-filter: blur(12px);
      box-shadow: var(--shadow);
    }

    .data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .data-item {
      text-align: center;
      padding: 24px 16px;
      border-right: 1px solid rgba(38, 53, 92, 0.5);
    }

    .data-item:last-child {
      border-right: none;
    }

    .data-value {
      font-size: 40px;
      font-weight: 800;
      color: var(--brand-primary);
      line-height: 1.2;
      margin-bottom: 8px;
      display: block;
    }

    .data-value span {
      font-size: 20px;
      margin-left: 2px;
    }

    .data-label {
      font-size: 14px;
      color: var(--text-secondary);
      font-weight: 500;
    }

    /* ============ 文章卡片 ============ */
    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .article-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(232, 182, 76, 0.3);
    }

    .article-cover {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
    }

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

    .article-card:hover .article-cover img {
      transform: scale(1.05);
    }

    .article-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(10, 15, 30, 0.4), transparent 60%);
    }

    .article-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      z-index: 2;
      background: rgba(232, 182, 76, 0.92);
      color: #0a0f1e;
      border-radius: 30px;
      padding: 4px 14px;
      font-size: 12px;
      font-weight: 700;
    }

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

    .article-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .article-meta i {
      color: var(--brand-secondary);
      margin-right: 4px;
    }

    .article-body h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-primary);
      line-height: 1.5;
      margin-bottom: 10px;
      transition: var(--transition);
    }

    .article-card:hover .article-body h3 {
      color: var(--brand-primary);
    }

    .article-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
      margin-bottom: 16px;
      flex: 1;
    }

    .article-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--brand-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }

    .article-link:hover {
      color: var(--brand-primary);
      gap: 12px;
    }

    /* ============ 对比面板 ============ */
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .compare-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      transition: var(--transition);
    }

    .compare-card:hover {
      box-shadow: var(--shadow);
      border-color: rgba(232, 182, 76, 0.25);
    }

    .compare-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .compare-card h3 i {
      color: var(--brand-primary);
      font-size: 22px;
    }

    .compare-list {
      list-style: none;
    }

    .compare-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 10px 0;
      border-bottom: 1px solid rgba(38, 53, 92, 0.4);
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

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

    .compare-list li i {
      color: var(--brand-secondary);
      margin-top: 5px;
      font-size: 13px;
    }

    .compare-card.highlight {
      border-color: rgba(232, 182, 76, 0.4);
      background: linear-gradient(135deg, rgba(232, 182, 76, 0.08), rgba(16, 26, 51, 0.9));
    }

    /* ============ FAQ ============ */
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      padding: 26px 30px;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(232, 182, 76, 0.25);
    }

    .faq-question {
      font-size: 17px;
      font-weight: 600;
      color: var(--text-primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .faq-question i {
      color: var(--brand-secondary);
      font-size: 15px;
      transition: var(--transition);
      flex-shrink: 0;
    }

    .faq-item.active .faq-question i {
      transform: rotate(180deg);
      color: var(--brand-primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.45s ease;
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-top: 16px;
    }

    /* ============ CTA ============ */
    .cta-section {
      background: linear-gradient(135deg, rgba(232, 182, 76, 0.1), rgba(45, 212, 191, 0.08)),
        url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      border-top: 1px solid var(--border-color);
    }

    .cta-inner {
      text-align: center;
      max-width: 680px;
      margin: 0 auto;
      background: rgba(10, 15, 30, 0.8);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 60px 40px;
      backdrop-filter: blur(14px);
    }

    .cta-inner h2 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .cta-inner p {
      font-size: 16px;
      color: var(--text-secondary);
      margin-bottom: 32px;
      line-height: 1.8;
    }

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

    /* ============ 页脚 ============ */
    .site-footer {
      background: #080c18;
      border-top: 1px solid var(--border-color);
      padding: 64px 0 24px;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      gap: 48px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .footer-brand {
      flex: 1;
      min-width: 260px;
      max-width: 420px;
    }

    .footer-brand h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
    }

    .footer-brand h3 i {
      color: var(--brand-primary);
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .footer-links {
      min-width: 180px;
    }

    .footer-links h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 18px;
      letter-spacing: 1px;
    }

    .footer-links a {
      display: block;
      padding: 6px 0;
      font-size: 14px;
      color: var(--text-secondary);
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: var(--brand-primary);
      padding-left: 6px;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      border-top: 1px solid rgba(38, 53, 92, 0.5);
    }

    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }

    /* ============ 响应式 ============ */
    @media (max-width: 1024px) {
      .page-hero {
        padding: 80px 0 70px;
      }

      .page-hero h1 {
        font-size: 42px;
      }

      .hero-stats-panel {
        margin-top: 40px;
      }

      .section {
        padding: 70px 0;
      }

      .section-title {
        font-size: 30px;
      }

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

      .data-item {
        border-right: none;
        border-bottom: 1px solid rgba(38, 53, 92, 0.5);
      }

      .data-item:nth-child(odd) {
        border-right: 1px solid rgba(38, 53, 92, 0.5);
      }

      .data-item:nth-last-child(-n+2) {
        border-bottom: none;
      }
    }

    @media (max-width: 768px) {
      .page-hero {
        padding: 60px 0 55px;
      }

      .page-hero h1 {
        font-size: 34px;
      }

      .page-hero .lead-text {
        font-size: 15px;
      }

      .hero-actions {
        flex-direction: column;
      }

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

      .section {
        padding: 55px 0;
      }

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

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

      .compare-card {
        padding: 26px;
      }

      .cta-inner {
        padding: 40px 24px;
      }

      .cta-inner h2 {
        font-size: 27px;
      }

      .footer-top {
        flex-direction: column;
        gap: 32px;
      }
    }

    @media (max-width: 520px) {
      .page-hero h1 {
        font-size: 28px;
      }

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

      .data-item {
        border-right: none !important;
        border-bottom: 1px solid rgba(38, 53, 92, 0.5) !important;
      }

      .data-item:last-child {
        border-bottom: none !important;
      }

      .data-value {
        font-size: 34px;
      }

      .nav-mobile-header {
        padding: 0 18px;
      }

      .nav-mobile-menu {
        padding: 10px 18px 20px;
      }

      .article-body {
        padding: 18px;
      }

      .faq-item {
        padding: 20px;
      }

      .faq-question {
        font-size: 15px;
      }
    }

    /* ============ 焦点可访问性 ============ */
    a:focus-visible,
    button:focus-visible {
      outline: 2px solid var(--brand-secondary);
      outline-offset: 3px;
      border-radius: 4px;
    }

/* roulang page: category3 */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --primary-light: #a78bfa;
  --secondary: #f59e0b;
  --secondary-dark: #d97706;
  --dark-bg: #0f172a;
  --dark-secondary: #1e1b4b;
  --light-bg: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 48px rgba(15, 23, 42, 0.14);
  --transition: 0.3s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: var(--light-bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
button {
  border: none;
  outline: none;
  cursor: pointer;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(15, 23, 42, 0.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}
.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 76px;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}
.nav-right {
  justify-content: flex-end;
}
.nav-logo {
  flex-shrink: 0;
  padding: 0 1.5rem;
}
.nav-logo a {
  display: inline-flex;
  align-items: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.nav-logo a i {
  color: var(--secondary);
  margin-right: 0.5rem;
  font-size: 1.2rem;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}
.nav-link.active {
  color: var(--secondary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.15rem;
  height: 2px;
  border-radius: 2px;
  background: var(--secondary);
}
.nav-mobile {
  display: none;
}
.nav-mobile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 1.25rem;
}
.nav-logo-mobile {
  display: inline-flex;
  align-items: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
}
.nav-logo-mobile i {
  color: var(--secondary);
  margin-right: 0.4rem;
}
.nav-mobile-toggle {
  background: transparent;
  color: #ffffff;
  font-size: 1.35rem;
  line-height: 1;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
}
.nav-mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}
.nav-mobile-menu {
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  padding: 0.5rem 1.25rem 1.25rem;
  background: rgba(15, 23, 42, 0.98);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.nav-mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-link-mobile {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  transition: background 0.2s, color 0.2s;
}
.nav-link-mobile:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}
.nav-link-mobile.active {
  color: var(--secondary);
  background: rgba(245, 158, 11, 0.08);
  font-weight: 600;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 110px 0 100px;
  background:
    linear-gradient(140deg, rgba(15, 23, 42, 0.93) 0%, rgba(30, 27, 75, 0.88) 55%, rgba(76, 29, 149, 0.78) 100%),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #ffffff;
  border-bottom: 4px solid rgba(245, 158, 11, 0.4);
}
.page-hero .hero-inner {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--secondary);
  background: rgba(245, 158, 11, 0.1);
  text-transform: uppercase;
  margin-bottom: 1.8rem;
}
.page-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin: 0 0 1.2rem;
  background: linear-gradient(120deg, #ffffff, #e9d5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-hero .hero-sub {
  font-size: 1.08rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 2.2rem;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 50px;
  line-height: 1.5;
  transition: all var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: #ffffff;
  border: none;
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(245, 158, 11, 0.45);
  color: #ffffff;
  background: linear-gradient(135deg, #fbbf24, var(--secondary-dark));
}
.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.45);
  color: #ffffff;
  transform: translateY(-2px);
}
.btn:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.5);
  outline-offset: 2px;
}

/* ===== 板块 ===== */
.section {
  padding: 95px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 1rem;
  background: rgba(124, 58, 237, 0.08);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.section-label i {
  font-size: 0.8rem;
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 0.8rem;
  letter-spacing: 0.01em;
}
.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

/* ===== 安全服务卡片 ===== */
.service-section {
  background: var(--light-bg);
}
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.2rem 2rem 2rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.25);
}
.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.4rem;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(245, 158, 11, 0.1));
  color: var(--primary);
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.7rem;
}
.service-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.2rem;
  flex: 1;
}
.service-points {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4rem;
}
.service-points li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-main);
  padding: 0.3rem 0;
}
.service-points li i {
  color: var(--primary);
  font-size: 0.78rem;
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--transition), color var(--transition);
}
.service-link:hover {
  gap: 0.6rem;
  color: var(--primary-dark);
}

/* ===== 防护要点图文 ===== */
.feature-section {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.feature-block {
  display: flex;
  align-items: center;
  gap: 4rem;
}
.feature-img-wrap {
  flex: 1;
  position: relative;
}
.feature-img-wrap img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: cover;
}
.feature-img-wrap::before {
  content: "";
  position: absolute;
  top: 20px;
  left: -16px;
  right: 20px;
  bottom: -16px;
  border: 2px solid rgba(124, 58, 237, 0.25);
  border-radius: var(--radius-lg);
  z-index: 0;
}
.feature-img-wrap img {
  position: relative;
  z-index: 1;
}
.feature-content {
  flex: 1;
}
.feature-content .section-label {
  margin-bottom: 1rem;
}
.feature-content h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.feature-content > p {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 1.6rem;
}
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.96rem;
  color: var(--text-main);
  font-weight: 500;
}
.feature-list li:last-child {
  border-bottom: none;
}
.feature-list li i {
  margin-top: 0.3rem;
  color: var(--secondary);
  font-size: 0.95rem;
}

/* ===== 安全数据 HUD ===== */
.stats-section {
  padding: 0;
}
.stats-panel {
  position: relative;
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 27, 75, 0.88)),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-radius: 28px;
  padding: 70px 50px;
  margin: 90px 0;
  color: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.stats-panel::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.12);
  filter: blur(20px);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  position: relative;
  z-index: 1;
}
.stat-item {
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.stat-item:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(245, 158, 11, 0.4);
}
.stat-icon {
  font-size: 1.6rem;
  color: var(--secondary);
  margin-bottom: 0.6rem;
}
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.3rem;
  background: linear-gradient(120deg, #ffffff, #e9d5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.04em;
}

/* ===== 安全流程 ===== */
.process-section {
  background: var(--light-bg);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  position: relative;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 2.5rem 1.8rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.process-num {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.2rem 0.9rem;
  border-radius: 50px;
  letter-spacing: 0.05em;
}
.process-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 1.2rem;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(124, 58, 237, 0.1);
  color: var(--primary);
}
.process-step h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
}
.process-step p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: #ffffff;
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md) !important;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.accordion-button {
  background: var(--card-bg);
  color: var(--text-main);
  font-weight: 600;
  font-size: 1rem;
  padding: 1.25rem 1.5rem;
  transition: background var(--transition), color var(--transition);
}
.accordion-button:not(.collapsed) {
  background: rgba(124, 58, 237, 0.05);
  color: var(--primary);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-md);
}
.accordion-button::after {
  background-size: 1rem;
  opacity: 0.55;
  transition: transform 0.25s ease;
}
.accordion-body {
  padding: 1.25rem 1.5rem 1.5rem;
  background: var(--card-bg);
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(226, 232, 240, 0.6);
}

/* ===== CTA ===== */
.cta-section {
  padding: 0;
}
.cta-box {
  background:
    linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(245, 158, 11, 0.08)),
    url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  background-color: var(--dark-bg);
  border-radius: 28px;
  padding: 65px 55px;
  margin: 90px 0;
  text-align: center;
  color: #ffffff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 27, 75, 0.75));
  border-radius: 28px;
}
.cta-box > * {
  position: relative;
  z-index: 1;
}
.cta-box h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}
.cta-box p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 620px;
  margin: 0 auto 2rem;
  line-height: 1.85;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark-bg);
  color: rgba(255, 255, 255, 0.75);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 0;
}
.site-footer .footer-top {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  padding-bottom: 45px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  flex-wrap: wrap;
}
.footer-brand {
  max-width: 380px;
}
.footer-brand h3 {
  display: flex;
  align-items: center;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.8rem;
}
.footer-brand h3 i {
  color: var(--secondary);
  margin-right: 0.5rem;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.7rem;
}
.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition), padding-left var(--transition);
}
.footer-links a:hover {
  color: var(--secondary);
  padding-left: 4px;
}
.footer-bottom {
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}
.footer-bottom a:hover {
  color: var(--secondary);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
  .section {
    padding: 75px 0;
  }
  .page-hero {
    padding: 85px 0 75px;
  }
  .page-hero h1 {
    font-size: 2.2rem;
  }
  .feature-block {
    flex-direction: column;
    gap: 2.5rem;
  }
  .feature-img-wrap::before {
    display: none;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-panel {
    padding: 45px 30px;
    margin: 70px 0;
  }
  .cta-box {
    padding: 50px 35px;
    margin: 70px 0;
  }
  .nav-desktop {
    display: none;
  }
  .nav-mobile {
    display: block;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
}
@media (max-width: 767px) {
  .section-title {
    font-size: 1.65rem;
  }
  .section-desc {
    font-size: 0.95rem;
  }
  .page-hero {
    padding: 70px 0 60px;
  }
  .page-hero h1 {
    font-size: 1.8rem;
  }
  .page-hero .hero-sub {
    font-size: 0.98rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .btn {
    width: 100%;
    max-width: 320px;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    padding: 45px 25px;
    border-radius: 20px;
  }
  .cta-box h2 {
    font-size: 1.5rem;
  }
  .site-footer .footer-top {
    flex-direction: column;
    gap: 2rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .page-hero h1 {
    font-size: 1.55rem;
  }
  .hero-sub {
    font-size: 0.92rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .service-card {
    padding: 1.75rem 1.4rem;
  }
  .cta-box h2 {
    font-size: 1.3rem;
  }
  .cta-box p {
    font-size: 0.92rem;
  }
  .nav-logo a {
    font-size: 1.15rem;
  }
  .nav-logo-mobile {
    font-size: 1.1rem;
  }
}