:root{--bg:#f5f7fb;--paper:#fff;--ink:#182130;--muted:#6d7888;--line:#e1e6ee;--purple:#6c5ce7;--cyan:#4cc6d7;--soft:#f0efff;--soft2:#eaf9fb;--deep:#182130;--max:1080px;--radius:18px;--shadow:0 16px 40px rgba(24,33,48,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}button{font:inherit}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}
.topbar{position:sticky;top:0;z-index:50;background:rgba(245,247,251,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.topbar-inner{height:70px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand-pic{width:38px;height:38px;display:grid;place-items:center;background:var(--soft);border-radius:12px;overflow:hidden}.brand-pic img{max-width:32px;max-height:32px;object-fit:contain}.brand b{display:block;font-size:18px}.brand small{display:block;font-size:11px;color:var(--muted)}.desktop-nav{display:flex;gap:4px;margin-left:auto}.desktop-nav a{font-size:14px;padding:8px 11px;color:var(--muted);border-radius:10px}.desktop-nav a:hover,.desktop-nav a.active{background:var(--soft);color:var(--ink)}.menu-button{border:0;background:linear-gradient(135deg,var(--purple),var(--cyan));color:#fff;padding:10px 14px;border-radius:12px;cursor:pointer;box-shadow:0 8px 22px rgba(108,92,231,.18)}
.subbar{background:var(--deep);color:#ecf1f7}.subbar-inner{min-height:38px;display:flex;align-items:center;gap:18px;white-space:nowrap;overflow:auto;font-size:13px}.subbar span{color:#9fe9f0;font-weight:800}.subbar a{opacity:.84}
.hero{padding:72px 0 36px}.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:end}.eyebrow{display:inline-flex;color:var(--purple);font-size:13px;font-weight:800;letter-spacing:.06em}.hero h1{font-size:clamp(36px,6vw,64px);line-height:1.06;margin:14px 0 18px}.hero p{font-size:17px;color:var(--muted);max-width:760px}.hero-note{padding:22px;border-left:3px solid var(--cyan);color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 18px;border-radius:12px;background:linear-gradient(135deg,var(--purple),var(--cyan));color:#fff;font-weight:700}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
.section{padding:30px 0}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.section-head h2{margin:0;font-size:28px}.section-head p{margin:0;max-width:560px;color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.panel,.card,.article,.mini{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.panel{padding:28px}.panel.accent{background:linear-gradient(150deg,#f3f1ff,#fff 70%)}.panel h3{font-size:24px;margin:8px 0 12px}.panel p{color:var(--muted)}.tag{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--soft2);color:#2e8590;font-size:12px;font-weight:800}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:20px}.card h3{margin:7px 0}.card p{font-size:14px;color:var(--muted)}.card a{color:var(--purple);font-weight:700}
.feed{display:grid}.feed-row{display:grid;grid-template-columns:80px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.feed-row:last-child{border-bottom:0}.num{font-size:30px;font-weight:900;color:#cbd3df}.feed-row strong{font-size:17px}.feed-row p{margin:3px 0 0;color:var(--muted);font-size:14px}
.page-hero{padding:48px 0 28px}.crumb{font-size:13px;color:var(--muted);margin-bottom:10px}.page-hero h1{font-size:40px;line-height:1.15;margin:8px 0 10px}.page-hero p{max-width:760px;color:var(--muted)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px;align-items:start}.article{padding:28px}.article h2{font-size:24px;margin-top:34px}.article h2:first-of-type{margin-top:0}.article p{color:#465262}.note{margin:22px 0;padding:18px 20px;border-left:4px solid var(--purple);background:var(--soft);border-radius:12px}
.media{min-height:180px;border-radius:16px;border:1px solid var(--line);background:linear-gradient(135deg,var(--soft),var(--soft2));display:grid;place-items:center;overflow:hidden;margin:18px 0}.media img{display:block;width:100%;height:180px;object-fit:contain;object-position:center}.media.tall img{height:320px}.media.banner img{height:220px}
.side{display:grid;gap:14px;position:sticky;top:124px}.mini{padding:18px}.mini h3{margin:0 0 8px}.mini p{font-size:13px;color:var(--muted);margin:0}.mini a{display:block;margin-top:10px;color:var(--purple);font-weight:700}
.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}
.footer{background:var(--deep);color:#eef3f8;padding:50px 0 80px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,.7fr);gap:30px}.footer-brand p{max-width:470px;color:#b9c4d0;font-size:13px}.footer-logo{max-width:34px;max-height:34px;object-fit:contain}.footer h3{font-size:14px;color:#9fe9f0}.footer a{display:block;font-size:13px;opacity:.84;margin:7px 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#aeb8c3;font-size:12px}
.mask{position:fixed;inset:0;background:rgba(15,22,30,.38);z-index:70}.drawer{position:fixed;top:0;right:0;width:min(440px,92vw);height:100vh;background:#fff;z-index:80;transform:translateX(100%);transition:.22s ease;overflow:auto;box-shadow:-20px 0 50px rgba(0,0,0,.12)}.drawer.open{transform:translateX(0)}.drawer-head{position:sticky;top:0;background:#fff;padding:20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.drawer-head button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px}.drawer-list{padding:18px}.drawer-list a{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--line)}.drawer-list small{color:var(--muted)}.lock{overflow:hidden}.mobile-nav{display:none}
@media(max-width:860px){.desktop-nav{display:none}.hero-grid,.feature-grid,.article-layout{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.side{position:static}.footer-grid{grid-template-columns:1fr 1fr}.feed-row{grid-template-columns:55px 1fr}.feed-row>a{grid-column:2}.mobile-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);z-index:60;padding-bottom:env(safe-area-inset-bottom)}.mobile-nav a{height:54px;display:grid;place-items:center;font-size:12px}.mobile-nav a.active{color:var(--purple);font-weight:800;border-top:2px solid var(--purple)}.footer{padding-bottom:110px}}
@media(max-width:560px){.wrap{width:min(var(--max),calc(100% - 28px))}.topbar-inner{height:64px}.brand small{display:none}.subbar{display:none}.hero{padding-top:44px}.hero h1{font-size:38px}.cards{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:8px}.page-hero h1{font-size:32px}.article{padding:21px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}