/* roulang page: index */
:root {
    --primary: #14728F;
    --primary-dark: #0E5670;
    --primary-light: #E3F2F6;
    --accent: #E58E3A;
    --accent-dark: #C9772A;
    --bg: #F5F8FA;
    --card: #FFFFFF;
    --text: #1F2A33;
    --text-secondary: #5C6B76;
    --border: #E2E8EF;
    --footer-bg: #12303B;
    --footer-text: #A8C1CB;
    --success: #2F8F6B;
    --radius: 14px;
    --radius-lg: 16px;
    --radius-btn: 8px;
    --shadow: 0 1px 2px rgba(16,42,67,.04), 0 10px 30px rgba(16,42,67,.06);
    --shadow-hover: 0 12px 36px rgba(16,42,67,.10);
    --transition: .2s ease;
    --container: 1200px;
    --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; background: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 96px 0; }
.section-alt { background: #EAF3F6; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 48px; }
.section-head.center { text-align: center; justify-content: center; flex-direction: column; align-items: center; }
.section-head h2 { font-size: clamp(1.375rem, 2.4vw, 2.125rem); font-weight: 700; margin-top: 8px; line-height: 1.3; }
.section-head p { color: var(--text-secondary); font-size: 15px; margin-top: 8px; max-width: 640px; }
.eyebrow { display: inline-flex; align-items: center; gap: 6px; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 999px; letter-spacing: .4px; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius-btn); font-weight: 600; font-size: 15px; transition: all var(--transition); white-space: nowrap; cursor: pointer; min-height: 44px; padding: 0 24px; line-height: 1.2; }
.btn-primary { background: var(--accent); color: #fff; text-shadow: 0 1px 1px rgba(0,0,0,.05); }
.btn-primary:hover { background: var(--accent-dark); box-shadow: 0 6px 16px rgba(229,142,58,.30); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-solid { background: var(--primary); color: #fff; }
.btn-solid:hover { background: var(--primary-dark); box-shadow: 0 8px 18px rgba(20,114,143,.18); transform: translateY(-1px); }
.btn-solid:active { transform: translateY(0); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(20,114,143,.04); }
.btn-lg { height: 48px; padding: 0 28px; font-size: 16px; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; }
.topbar { background: var(--primary-dark); color: #fff; font-size: 13px; height: 40px; display: flex; align-items: center; }
.topbar-inner { display: flex; align-items: center; gap: 12px; width: 100%; }
.topbar-domain { font-weight: 600; opacity: .95; }
.topbar-status { color: #B7D5DE; }
.topbar-login { margin-left: auto; background: rgba(255,255,255,.14); border-radius: 6px; padding: 5px 12px; font-weight: 500; transition: var(--transition); }
.topbar-login:hover { background: rgba(255,255,255,.24); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.site-header.nav-open { border-bottom-color: transparent; }
.header-inner { display: grid; grid-template-columns: auto 1fr auto; align-items: center; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); display: flex; align-items: center; justify-content: center; color: #fff; flex-shrink: 0; }
.brand-name { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: .4px; }
.brand-tagline { display: block; font-size: 11px; color: var(--text-secondary); margin-top: 2px; letter-spacing: .3px; line-height: 1.3; }
.main-nav { display: flex; justify-content: center; gap: 36px; }
.nav-link { font-size: 15px; color: var(--text-secondary); font-weight: 500; padding: 8px 2px; border-bottom: 2px solid transparent; transition: var(--transition); line-height: 1.3; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); border-bottom-color: var(--primary); }
.header-cta { display: inline-flex; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 8px; align-items: center; justify-content: center; color: var(--text); transition: var(--transition); }
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }
.hero { position: relative; padding: 96px 0 80px; background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat; border-bottom: 1px solid var(--border); }
.hero::before { content: ""; position: absolute; inset: 0; background: rgba(245,248,250,.88); }
.hero-inner { position: relative; z-index: 2; text-align: center; max-width: 780px; margin: 0 auto; }
.hero h1 { margin: 20px 0 16px; font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.2; font-weight: 700; color: var(--text); }
.hero-sub { font-size: 18px; color: var(--text-secondary); max-width: 540px; margin: 0 auto 32px; line-height: 1.6; }
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.hero-trust { margin-top: 44px; display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; }
.trust-item svg { color: var(--primary); flex-shrink: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: start; padding-bottom: 24px; }
.feature-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; box-shadow: var(--shadow); transition: all var(--transition); }
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--primary-light); }
.feature-card:nth-child(2) { transform: translateY(24px); }
.feature-card:nth-child(2):hover { transform: translateY(20px); }
.feature-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.feature-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; color: var(--primary); }
.feature-num { font-size: 42px; font-weight: 800; color: rgba(20,114,143,.14); line-height: 1; letter-spacing: 1px; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.feature-link { color: var(--primary); font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 4px; transition: var(--transition); }
.feature-link:hover { gap: 8px; }
.showcase-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.showcase-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.showcase-media img { width: 100%; height: 440px; object-fit: cover; }
.showcase-content h2 { font-size: clamp(1.375rem, 2.4vw, 2.125rem); font-weight: 700; margin: 12px 0 12px; line-height: 1.3; }
.showcase-desc { color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; max-width: 460px; }
.step-list { display: flex; flex-direction: column; gap: 22px; margin-bottom: 32px; }
.step-item { display: flex; gap: 14px; align-items: flex-start; }
.step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 600; flex-shrink: 0; font-size: 15px; }
.step-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.news-list { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.news-card-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; transition: all var(--transition); }
.news-card-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--primary-light); }
.news-badge { display: inline-flex; align-items: center; background: var(--primary-light); color: var(--primary); font-size: 12px; padding: 5px 14px; border-radius: 999px; font-weight: 600; white-space: nowrap; }
.news-content { min-width: 0; }
.news-title { display: block; font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 4px; transition: var(--transition); }
.news-card-item:hover .news-title { color: var(--primary); }
.news-summary { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; color: var(--text-secondary); font-size: 14px; line-height: 1.6; }
.news-meta { display: flex; align-items: center; gap: 16px; color: #8FA3AD; font-size: 13px; white-space: nowrap; }
.news-arrow { width: 32px; height: 32px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px; transition: var(--transition); flex-shrink: 0; }
.news-card-item:hover .news-arrow { transform: translateX(4px); background: var(--primary); color: #fff; }
.empty-tip { text-align: center; color: var(--text-secondary); padding: 40px 0; font-size: 15px; background: var(--card); border: 1px dashed var(--border); border-radius: var(--radius); }
.stats-row { display: flex; justify-content: space-around; gap: 32px; flex-wrap: wrap; text-align: center; }
.stat-item h4 { font-size: 36px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.stat-item p { color: var(--text-secondary); font-size: 14px; margin-top: 6px; }
.testimonials { max-width: 820px; margin: 56px auto 0; display: grid; gap: 24px; }
.testimonial { position: relative; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 36px 24px 44px; box-shadow: var(--shadow); }
.quote-mark { position: absolute; left: 22px; top: 12px; font-size: 44px; color: var(--primary-light); line-height: 1; font-family: Georgia, serif; }
.testimonial p { color: var(--text); font-size: 16px; line-height: 1.8; }
.testimonial cite { display: block; margin-top: 14px; color: var(--text-secondary); font-size: 14px; font-style: normal; text-align: right; }
.faq-list { max-width: 840px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px; background: var(--card); overflow: hidden; transition: border-color var(--transition); }
.faq-item.open { border-color: var(--primary); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text); text-align: left; transition: var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-item.open .faq-question { color: var(--primary); }
.faq-icon { width: 26px; height: 26px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px; line-height: 1; flex-shrink: 0; transition: transform .3s ease, background .3s ease; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { color: var(--text-secondary); padding: 0 24px 20px; font-size: 14px; line-height: 1.8; }
.faq-item.open .faq-answer { background: var(--primary-light); border-radius: 0; }
.cta-section { background: var(--primary-light); }
.cta-box { max-width: 860px; margin: 0 auto; text-align: center; padding: 52px 40px; background: var(--card); border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border); }
.cta-box h2 { font-size: clamp(1.375rem, 2.4vw, 2rem); font-weight: 700; margin-bottom: 10px; }
.cta-box p { color: var(--text-secondary); font-size: 15px; margin-bottom: 28px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.site-footer { background: var(--footer-bg); color: var(--footer-text); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-tagline { color: #8FA3AD; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #B9D0D9; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 11px; font-size: 14px; }
.footer-col ul a { color: var(--footer-text); transition: var(--transition); }
.footer-col ul a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 48px; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #89A6B1; }
.bottom-cta { position: fixed; bottom: 0; left: 0; right: 0; z-index: 50; background: rgba(255,255,255,.96); border-top: 1px solid var(--border); padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; box-shadow: 0 -4px 16px rgba(16,42,67,.05); }
.bottom-cta-text { font-size: 15px; font-weight: 500; color: var(--text); }
.bottom-cta-text strong { color: var(--primary); }
body::after { content: ""; display: block; height: 76px; }
@media (max-width: 1023px) {
    .feature-grid { grid-template-columns: 1fr 1fr; }
    .feature-card:nth-child(2) { transform: none; }
    .feature-card:nth-child(2):hover { transform: translateY(-4px); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .section { padding: 56px 0; }
    .topbar-status { display: none; }
    .topbar-login { padding: 5px 10px; }
    .header-inner { grid-template-columns: auto 1fr auto; gap: 12px; height: 64px; }
    .brand-name { font-size: 16px; }
    .brand-tagline { display: none; }
    .brand-logo { width: 34px; height: 34px; }
    .main-nav { display: none; }
    .header-cta { display: none; }
    .nav-toggle { display: inline-flex; }
    .site-header.nav-open .main-nav { display: flex; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); flex-direction: column; gap: 4px; padding: 8px 16px 16px; box-shadow: 0 10px 30px rgba(16,42,67,.06); }
    .site-header.nav-open .main-nav .nav-link { padding: 14px 12px; font-size: 16px; border-bottom: 1px solid var(--border); border-radius: 8px; }
    .site-header.nav-open .main-nav .nav-link.active { background: var(--primary-light); border-bottom-color: var(--primary); }
    .hero { padding: 64px 0 56px; }
    .hero h1 { font-size: 1.9rem; }
    .hero-sub { font-size: 16px; }
    .hero-trust { gap: 20px; }
    .feature-grid { grid-template-columns: 1fr; }
    .feature-card:nth-child(2) { transform: none; }
    .feature-card { padding: 24px 20px; }
    .showcase-inner { grid-template-columns: 1fr; gap: 32px; }
    .showcase-media img { height: 260px; }
    .news-card-item { grid-template-columns: 1fr; gap: 12px; padding: 20px; }
    .news-meta { justify-content: space-between; width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .bottom-cta { padding: 10px 16px; }
    .bottom-cta-text { font-size: 14px; }
}

/* roulang page: article */
/* ===== Reset & Base ===== */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
            font-size:16px;line-height:1.7;color:#1F2A33;background:#F5F8FA;
            -webkit-font-smoothing:antialiased;padding-bottom:76px;
        }
        img{max-width:100%;display:block}
        a{color:inherit;text-decoration:none;transition:color .2s ease}
        button{font-family:inherit;cursor:pointer;border:none;background:none}
        input,textarea{font-family:inherit}

        :root{
            --primary:#14728F;
            --primary-dark:#0E5670;
            --primary-light:#E3F2F6;
            --accent:#E58E3A;
            --accent-dark:#C9772A;
            --bg:#F5F8FA;
            --surface:#FFFFFF;
            --text:#1F2A33;
            --text-secondary:#5C6B76;
            --border:#E2E8EF;
            --footer-bg:#12303B;
            --success:#2F8F6B;
            --radius:14px;
            --radius-lg:16px;
            --radius-sm:8px;
            --shadow:0 1px 2px rgba(16,42,67,.04),0 10px 30px rgba(16,42,67,.06);
            --shadow-hover:0 12px 36px rgba(16,42,67,.10);
            --transition:all .2s ease;
            --container-width:1200px;
        }

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

        /* ===== Buttons ===== */
        .btn{
            display:inline-flex;align-items:center;justify-content:center;
            border-radius:var(--radius-sm);font-weight:600;font-size:15px;
            padding:0 24px;height:44px;transition:var(--transition);
            white-space:nowrap;line-height:1;
        }
        .btn-accent{background:var(--accent);color:#fff}
        .btn-accent:hover{background:var(--accent-dark);box-shadow:0 6px 16px rgba(229,142,58,.3);transform:translateY(-1px)}
        .btn-primary{background:var(--primary);color:#fff}
        .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}
        .btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-secondary)}
        .btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
        .btn-sm{height:36px;padding:0 16px;font-size:14px}
        .btn:active{transform:none}

        /* ===== Top Bar ===== */
        .top-bar{
            background:var(--primary-dark);color:#d6e9f0;height:40px;
            font-size:13px;display:flex;align-items:center;
        }
        .top-bar-inner{display:flex;justify-content:space-between;align-items:center;width:100%}
        .top-bar-domain{display:flex;align-items:center;gap:6px}
        .top-bar-domain svg{flex-shrink:0}
        .top-bar-entry{
            color:#fff;font-weight:500;border-bottom:1px solid rgba(255,255,255,.35);
            padding-bottom:1px;transition:var(--transition);
        }
        .top-bar-entry:hover{border-color:#fff;color:var(--accent)}

        /* ===== Header & Nav ===== */
        .site-header{
            position:sticky;top:0;z-index:100;
            background:rgba(255,255,255,.94);
            backdrop-filter:blur(12px);
            border-bottom:1px solid var(--border);
            height:72px;display:flex;align-items:center;
        }
        .header-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
        .brand{display:flex;align-items:center;gap:10px}
        .brand-logo{
            width:38px;height:38px;border-radius:10px;
            background:var(--primary-light);color:var(--primary);
            display:flex;align-items:center;justify-content:center;flex-shrink:0;
        }
        .brand-text{display:flex;flex-direction:column;line-height:1.2}
        .brand-name{font-weight:700;font-size:18px;color:var(--text)}
        .brand-tagline{font-size:11px;color:var(--text-secondary);margin-top:2px}
        .main-nav{display:flex;align-items:center;gap:32px}
        .nav-link{
            font-size:15px;font-weight:500;color:var(--text);position:relative;
            padding:6px 0;transition:var(--transition);
        }
        .nav-link:hover{color:var(--primary)}
        .nav-link.active{color:var(--primary)}
        .nav-link.active::after{
            content:"";position:absolute;left:0;right:0;bottom:-2px;
            height:2px;background:var(--primary);border-radius:2px;
        }
        .header-cta{flex-shrink:0}
        .nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:8px;color:var(--text)}
        .nav-toggle:hover{background:var(--primary-light)}

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap{
            background:#fff;border-bottom:1px solid var(--border);
            padding:14px 0;
        }
        .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:14px;color:var(--text-secondary)}
        .breadcrumb li{display:flex;align-items:center;gap:6px;list-style:none}
        .breadcrumb li::after{content:"/";color:#B7C2CC;font-size:12px}
        .breadcrumb li:last-child::after{display:none}
        .breadcrumb a{color:var(--text-secondary);transition:var(--transition)}
        .breadcrumb a:hover{color:var(--primary)}
        .breadcrumb li[aria-current="page"]{color:var(--text);font-weight:500;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

        /* ===== Article Page ===== */
        .article-page{padding:40px 0 64px;min-height:60vh}
        .article-wrap{
            max-width:880px;margin:0 auto;background:var(--surface);
            border-radius:var(--radius-lg);box-shadow:var(--shadow);
            padding:48px 56px;border:1px solid var(--border);
        }
        .article-header{text-align:center;margin-bottom:36px}
        .article-header .badge{
            display:inline-block;background:var(--primary-light);color:var(--primary);
            font-size:12px;font-weight:600;padding:4px 14px;border-radius:20px;
            margin-bottom:16px;letter-spacing:.5px;
        }
        .article-header h1{
            font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3;
            color:var(--text);margin-bottom:18px;
        }
        .article-meta{
            display:flex;align-items:center;justify-content:center;gap:24px;
            flex-wrap:wrap;font-size:14px;color:var(--text-secondary);
        }
        .meta-item{display:inline-flex;align-items:center;gap:6px}
        .meta-item svg{width:14px;height:14px;flex-shrink:0}

        /* ===== Article Body ===== */
        .article-body{
            max-width:720px;margin:0 auto;font-size:16px;line-height:1.8;color:var(--text);
        }
        .article-body h2{
            font-size:1.5rem;font-weight:700;margin:48px 0 16px;color:var(--text);
            padding-bottom:8px;border-bottom:1px solid var(--border);
        }
        .article-body h3{
            font-size:1.2rem;font-weight:600;margin:32px 0 12px;color:var(--text);
        }
        .article-body h4{
            font-size:1.05rem;font-weight:600;margin:24px 0 10px;color:var(--text);
        }
        .article-body p{margin:0 0 1.5em}
        .article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.6em}
        .article-body li{margin-bottom:.5em}
        .article-body img{border-radius:12px;margin:24px 0;max-width:100%;height:auto}
        .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}
        .article-body a:hover{color:var(--primary-dark)}
        .article-body blockquote{
            border-left:4px solid var(--primary);background:var(--primary-light);
            padding:16px 20px;border-radius:0 10px 10px 0;margin:24px 0;
            color:var(--text);font-style:normal;
        }
        .article-body blockquote p:last-child{margin-bottom:0}
        .article-body table{
            width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
        }
        .article-body table th{
            background:var(--primary-light);color:var(--primary-dark);
            padding:12px 16px;text-align:left;font-weight:600;border:1px solid var(--border);
        }
        .article-body table td{
            padding:12px 16px;border:1px solid var(--border);color:var(--text);
        }
        .article-body table tr:nth-child(even) td{background:#F8FAFC}
        .article-body code{
            background:var(--primary-light);color:var(--primary-dark);
            padding:2px 8px;border-radius:4px;font-size:.9em;
        }
        .article-body pre{
            background:#1F2A33;color:#E3F2F6;padding:20px;border-radius:12px;
            overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.6;
        }
        .article-body pre code{background:transparent;color:inherit;padding:0}
        .article-body .tip,.article-body .note{
            background:var(--primary-light);border-radius:10px;padding:20px;
            margin:24px 0;font-size:15px;
        }
        .article-body .tip strong,.article-body .note strong{color:var(--primary)}

        /* ===== Article Empty ===== */
        .article-empty{text-align:center;padding:60px 20px}
        .article-empty p{font-size:18px;color:var(--text-secondary);margin-bottom:24px}

        /* ===== Section Head ===== */
        .section-head{
            display:flex;align-items:flex-end;justify-content:space-between;
            margin-bottom:32px;gap:16px;
        }
        .eyebrow{
            font-size:13px;font-weight:600;color:var(--primary);
            text-transform:uppercase;letter-spacing:1px;display:block;margin-bottom:6px;
        }
        .section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;color:var(--text)}

        /* ===== Related Section ===== */
        .related-section{padding:64px 0 32px}
        .related-grid{
            display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
        }
        .related-card{
            background:var(--surface);border:1px solid var(--border);
            border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
            transition:var(--transition);
        }
        .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
        .related-img{aspect-ratio:16/10;overflow:hidden;background:var(--primary-light)}
        .related-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
        .related-card:hover .related-img img{transform:scale(1.04)}
        .related-content{padding:20px 24px 24px}
        .related-content .badge{
            display:inline-block;background:var(--primary-light);color:var(--primary);
            font-size:11px;font-weight:600;padding:3px 12px;border-radius:16px;
            margin-bottom:10px;letter-spacing:.3px;
        }
        .related-content h3{
            font-size:1.05rem;font-weight:600;color:var(--text);
            margin-bottom:8px;line-height:1.4;
        }
        .related-content p{
            font-size:14px;color:var(--text-secondary);line-height:1.6;
            display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
        }

        /* ===== Footer ===== */
        .site-footer{
            background:var(--footer-bg);color:#BCD4DD;padding:60px 0 24px;
            margin-top:0;
        }
        .footer-grid{
            display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;
        }
        .footer-brand p{font-size:14px;line-height:1.7;margin-top:16px;color:#9DB8C4;max-width:300px}
        .site-footer .brand-name{color:#fff}
        .site-footer .brand-tagline{color:#7FA4B2}
        .site-footer .brand-logo{background:rgba(255,255,255,.1);color:#fff}
        .footer-col h4{
            font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;
        }
        .footer-col ul{list-style:none}
        .footer-col ul li{margin-bottom:10px;font-size:14px}
        .footer-col ul li a{color:#9DB8C4;transition:var(--transition)}
        .footer-col ul li a:hover{color:#fff}
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,.08);
            padding-top:20px;display:flex;justify-content:space-between;
            align-items:center;flex-wrap:wrap;gap:8px;
            font-size:13px;color:#7FA4B2;
        }

        /* ===== Fixed CTA ===== */
        .fixed-cta{
            position:fixed;bottom:0;left:0;right:0;z-index:50;
            background:rgba(255,255,255,.96);
            backdrop-filter:blur(8px);
            border-top:1px solid var(--border);
            padding:12px 0;
            box-shadow:0 -4px 20px rgba(16,42,67,.05);
        }
        .fixed-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
        .fixed-cta p{
            font-size:15px;font-weight:500;color:var(--text);
            display:flex;align-items:center;gap:8px;
        }
        .fixed-cta p::before{
            content:"";width:8px;height:8px;border-radius:50%;
            background:var(--success);flex-shrink:0;
        }
        .fixed-cta .btn{flex-shrink:0}

        /* ===== Responsive ===== */
        @media(max-width:1023px){
            .related-grid{grid-template-columns:repeat(2,1fr)}
            .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
        }
        @media(max-width:767px){
            body{padding-bottom:64px}
            .container{padding-left:16px;padding-right:16px}
            .top-bar{height:38px;font-size:12px}
            .top-bar-inner{flex-wrap:nowrap}
            .main-nav{
                display:none;position:absolute;top:72px;left:0;right:0;
                background:#fff;border-bottom:1px solid var(--border);
                padding:16px;flex-direction:column;align-items:flex-start;gap:4px;
                box-shadow:0 12px 24px rgba(16,42,67,.08);
            }
            .main-nav.open{display:flex}
            .nav-link{
                width:100%;padding:14px 8px;font-size:16px;
                border-radius:8px;
            }
            .nav-link:hover,.nav-link.active{background:var(--primary-light);color:var(--primary)}
            .nav-link.active::after{display:none}
            .header-cta{display:none}
            .nav-toggle{display:flex}
            .header-inner{gap:8px}
            .brand-tagline{display:none}
            .article-page{padding:24px 0 40px}
            .article-wrap{padding:32px 20px;border-radius:14px}
            .article-header h1{font-size:1.4rem}
            .article-meta{gap:12px;font-size:13px;flex-direction:column;gap:6px}
            .article-body{font-size:15px;line-height:1.75}
            .article-body h2{font-size:1.25rem;margin-top:32px}
            .related-section{padding:40px 0 24px}
            .related-grid{grid-template-columns:1fr;gap:16px}
            .section-head{flex-direction:column;align-items:flex-start}
            .footer-grid{grid-template-columns:1fr;gap:24px}
            .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
            .fixed-cta{padding:10px 0}
            .fixed-cta p{font-size:13px}
            .fixed-cta p span{display:none}
            .fixed-cta .btn{height:38px;padding:0 18px;font-size:14px}
        }
        @media(max-width:520px){
            .brand-name{font-size:16px}
            .top-bar-entry{font-size:12px}
            .related-grid{grid-template-columns:1fr}
            .article-header h1{font-size:1.25rem}
        }

        /* ===== Focus visibility ===== */
        a:focus-visible,.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible{
            outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;
        }

/* roulang page: category1 */
:root {
            --primary: #14728F;
            --primary-dark: #0E5670;
            --primary-light: #E3F2F6;
            --accent: #E58E3A;
            --accent-dark: #C9772A;
            --bg: #F5F8FA;
            --card-bg: #FFFFFF;
            --text: #1F2A33;
            --text-secondary: #5C6B76;
            --border: #E2E8EF;
            --footer-bg: #12303B;
            --success: #2F8F6B;
            --radius: 14px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 2px rgba(16, 42, 67, .04), 0 10px 30px rgba(16, 42, 67, .06);
            --shadow-hover: 0 12px 36px rgba(16, 42, 67, .10);
            --transition: .2s ease;
            --container-width: 1200px;
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 76px;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* 顶部信息条 */
        .topbar {
            background: var(--primary-dark);
            color: #EAF3F6;
            font-size: 13px;
            min-height: 40px;
            display: flex;
            align-items: center;
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
        }

        .topbar-left {
            display: flex;
            align-items: center;
            gap: 12px;
            opacity: .92;
        }

        .topbar-right a {
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
            color: #fff;
        }

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

        /* 主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: 72px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 32px;
        }

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

        .brand-logo {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .01em;
            color: var(--text);
        }

        .brand-tagline {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 2px;
            letter-spacing: .03em;
        }

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

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 22px 2px 20px;
            position: relative;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 14px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

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

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .header-cta {
            margin-left: 8px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--text);
            transition: background var(--transition);
        }

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

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            min-height: 48px;
            padding: 0 24px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-sm {
            min-height: 36px;
            padding: 0 16px;
            font-size: 14px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 16px rgba(229, 142, 58, .30);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 8px 20px rgba(229, 142, 58, .35);
            transform: translateY(-1px);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border);
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn:active {
            transform: none;
            box-shadow: none;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .nav-toggle:focus-visible,
        .faq-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* 页头区 Hero */
        .category-hero {
            background: var(--primary-light);
            padding: 80px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(20, 114, 143, .08) 1px, transparent 1px);
            background-size: 22px 22px;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            max-width: 640px;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .06em;
            text-transform: uppercase;
            margin-bottom: 18px;
            background: rgba(255, 255, 255, .8);
            border: 1px solid rgba(20, 114, 143, .18);
            padding: 6px 14px;
            border-radius: 999px;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3.15rem);
            line-height: 1.2;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -.015em;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero .hero-lead {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
        }

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

        .hero-trust {
            display: flex;
            gap: 24px;
            margin-top: 42px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .trust-item svg {
            color: var(--success);
            flex-shrink: 0;
        }

        .hero-visual {
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual img {
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-card);
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .visual-bubble {
            position: absolute;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            padding: 12px 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, .8);
        }

        .bubble-1 {
            top: -12px;
            left: -12px;
        }

        .bubble-2 {
            bottom: 24px;
            right: 8px;
        }

        .bubble-icon {
            color: var(--primary);
            display: flex;
        }

        /* 通用板块 */
        .section {
            padding: var(--section-space) 0;
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header.center {
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .08em;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            display: inline-block;
        }

        .section-header.center .eyebrow {
            justify-content: center;
        }

        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -.01em;
        }

        .section-header p {
            color: var(--text-secondary);
            max-width: 640px;
            font-size: 16px;
        }

        .section-header.center p {
            margin: 0 auto;
        }

        /* 导语区 */
        .intro-bar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-card);
            padding: 32px 36px;
            margin-top: -32px;
            position: relative;
            z-index: 2;
            max-width: var(--container-width);
            margin-left: auto;
            margin-right: auto;
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .intro-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .intro-bar p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* 内容卡片网格 */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .guide-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 28px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(20, 114, 143, .25);
        }

        .guide-card-large {
            grid-column: span 7;
            padding: 0;
            overflow: hidden;
            min-height: 360px;
        }

        .guide-card-large img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .guide-card-large::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(18, 48, 59, 0) 30%, rgba(18, 48, 59, .85) 100%);
            z-index: 1;
        }

        .guide-card-large .card-inner {
            position: relative;
            z-index: 2;
            margin-top: auto;
            padding: 28px;
            color: #fff;
            display: flex;
            flex-direction: column;
            min-height: 360px;
            justify-content: flex-end;
        }

        .guide-card-large .card-inner h3 {
            font-size: 1.5rem;
            margin-bottom: 8px;
        }

        .guide-card-large .card-inner p {
            color: rgba(255, 255, 255, .9);
            max-width: 340px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            min-height: 44px;
            margin-top: 12px;
            transition: gap var(--transition);
        }

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

        .guide-card-large .card-link {
            color: #fff;
        }

        .guide-card-large .card-link:hover {
            color: var(--accent);
        }

        .guide-card-tall {
            grid-column: span 5;
            background: var(--primary-light);
            border-color: transparent;
            justify-content: center;
        }

        .guide-card-tall .card-icon {
            width: 56px;
            height: 56px;
            background: #fff;
            color: var(--primary);
        }

        .guide-card-tall h3 {
            font-size: 1.35rem;
            margin: 16px 0 10px;
        }

        .guide-card-tall .card-link {
            color: var(--primary-dark);
        }

        .guide-card-small {
            grid-column: span 3;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .guide-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .guide-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            flex-grow: 1;
        }

        /* 标签 */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: .02em;
        }

        .tag-accent {
            background: rgba(229, 142, 58, .12);
            color: var(--accent-dark);
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
        }

        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            min-height: 64px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            transition: transform var(--transition), background var(--transition);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: currentColor;
            border-radius: 2px;
        }

        .faq-icon::before {
            width: 12px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 12px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 24px 24px;
        }

        .faq-answer p {
            padding: 16px 20px;
            background: var(--primary-light);
            border-radius: 10px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        /* CTA 区块 */
        .cta-block {
            background: var(--primary-light);
            border-top: 1px solid rgba(20, 114, 143, .1);
            padding: 72px 0;
            text-align: center;
        }

        .cta-block h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }

        .cta-block p {
            color: var(--text-secondary);
            max-width: 500px;
            margin: 0 auto 28px;
            font-size: 16px;
        }

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

        /* 页脚 */
        .site-footer {
            background: var(--footer-bg);
            color: #C8DAE2;
            padding-top: 60px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .footer-col ul a {
            color: #A8BFC9;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            min-height: 24px;
        }

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

        .footer-brand .brand-name {
            color: #fff;
            font-size: 18px;
        }

        .footer-brand .brand-tagline {
            color: #A8BFC9;
        }

        .footer-brand .brand-logo {
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            max-width: 300px;
            color: #A8BFC9;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: #849EA7;
        }

        /* 底部固定转化条 */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }

        .fixed-cta .cta-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .fixed-cta .cta-text span {
            color: var(--primary);
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .guide-card-large {
                grid-column: span 7;
            }
            .guide-card-tall {
                grid-column: span 5;
            }
            .guide-card-small {
                grid-column: span 3;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 56px 0;
            }

            .topbar-left span:not(.topbar-domain) {
                display: none;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 16px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 30px rgba(16, 42, 67, .08);
            }

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

            .main-nav .nav-link {
                min-height: 48px;
                padding: 14px 8px;
                justify-content: center;
                border-radius: 8px;
            }

            .main-nav .nav-link::after {
                display: none;
            }

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

            .header-cta {
                margin-left: auto;
            }

            .nav-toggle {
                display: flex;
            }

            .header-inner {
                gap: 12px;
            }

            .category-hero {
                padding: 56px 0 48px;
            }

            .category-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-content {
                text-align: center;
                max-width: 100%;
            }

            .hero-lead {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-trust {
                justify-content: center;
                gap: 16px;
            }

            .hero-visual {
                min-height: 240px;
                order: -1;
            }

            .intro-bar {
                flex-direction: column;
                gap: 12px;
                padding: 24px;
                margin-top: -24px;
            }

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

            .guide-card-large,
            .guide-card-tall,
            .guide-card-small {
                grid-column: span 1;
            }

            .guide-card-large,
            .guide-card-large .card-inner {
                min-height: 280px;
            }

            .guide-card-tall {
                order: -1;
            }

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

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

            .fixed-cta {
                padding: 10px 16px;
            }

            .fixed-cta .cta-text {
                display: none;
            }

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

            .faq-answer {
                padding: 0 14px 14px;
            }

            .faq-item.open .faq-answer {
                padding: 0 14px 18px;
            }

            .faq-answer p {
                padding: 14px 16px;
            }
        }

        @media (max-width: 520px) {
            .brand-tagline {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .category-hero h1 {
                font-size: 1.75rem;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 220px;
            }

            .guide-card {
                padding: 22px;
            }

            .guide-card-large .card-inner {
                padding: 22px;
            }

            .bubble-1 {
                left: 50%;
                transform: translateX(-50%);
                top: -20px;
            }

            .bubble-2 {
                right: 50%;
                transform: translateX(50%);
                bottom: 12px;
            }

            .fixed-cta .btn {
                width: 100%;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .guide-card-small {
                grid-column: span 4;
            }

            .guide-card-large {
                grid-column: span 7;
            }

            .guide-card-tall {
                grid-column: span 5;
            }

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

        @media (min-width: 1024px) and (max-width: 1200px) {
            .guide-card-small {
                grid-column: span 6;
            }
        }