:root{--bg:#f7f9fb;--card:#fff;--ink:#0f172a;--ink2:#475569;--ink3:#64748b;--line:#e2e8f0;
--brand:#0f766e;--brand2:#115e59;--warn:#b45309;--danger:#dc2626;--ok:#15803d;--r:14px;--sh:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.hdr{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.hdr-in{display:flex;align-items:center;gap:16px;height:58px}
.logo{font-weight:800;font-size:19px;color:var(--ink);display:flex;align-items:center;gap:8px}
.logo-ic{font-size:20px}
.nav{margin-left:auto;display:flex;gap:6px;align-items:center;font-size:15px}
.nav a{padding:6px 12px;border-radius:8px;color:var(--ink2)}
.nav a.on{background:#ecfdf5;color:var(--brand2);font-weight:700}
.nav-cta{background:var(--brand);color:#fff!important}
.searchbar{display:flex;gap:8px;padding:10px 0 12px}
.searchbar input{flex:1;min-width:0;padding:10px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:#f8fafc;color:var(--ink)}
.searchbar input:focus{outline:none;border-color:var(--brand)}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--brand);color:#fff;font-weight:600;white-space:nowrap}
.h1{font-size:26px;line-height:1.4;margin:14px 0 10px}
.crumb{font-size:13px;color:var(--ink3);margin:12px 0}
.sec{margin:26px 0}
.h2,.sec h2{font-size:20px;margin:0 0 12px}
main h2{font-size:20px}
.hero{background:linear-gradient(160deg,#ecfdf5,#fff 70%);border:1px solid #ccfbf1;border-radius:18px;padding:26px;margin:18px 0}
.hero h1{font-size:28px;margin:0 0 10px;line-height:1.4}
.hero h1 b{color:var(--brand)}
.hero-p{color:var(--ink2);margin:6px 0 18px}
.hero-note{margin:10px 0 4px;font-size:13.5px;line-height:1.85;color:#6b7a83;background:rgba(255,255,255,.72);
  border:1px dashed rgba(15,118,110,.28);border-radius:10px;padding:10px 14px}
.hero-note b{color:#0f766e}
.hero-stats{display:flex;gap:26px;flex-wrap:wrap;margin-bottom:14px}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:26px;color:var(--brand)}
.hero-stats span{font-size:13px;color:var(--ink3)}
.hero-alert{background:#fff;border:1px solid var(--line);border-left:4px solid var(--warn);border-radius:10px;padding:12px 14px;color:var(--ink2);font-size:14px}
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px}
.cat{display:flex;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;color:var(--ink);transition:.15s}
.cat:hover{border-color:var(--brand);box-shadow:var(--sh);text-decoration:none;transform:translateY(-1px)}
.cat-ic{font-size:26px;width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;background:#f1f5f9;border-radius:11px}
.cat-b h3{margin:0 0 4px;font-size:16px}
.cat-b p{margin:0 0 8px;font-size:13px;color:var(--ink2)}
.cat-s{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.s{font-size:12px;padding:2px 8px;background:#f1f5f9;color:var(--ink2);border-radius:20px}
.cat-n{margin-left:auto;font-size:12px;color:var(--brand);font-weight:700}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;color:var(--ink)}
.card:hover{border-color:var(--brand);text-decoration:none;box-shadow:var(--sh)}
.card-h{font-weight:700;font-size:15px;margin-bottom:6px;line-height:1.5}
.card-l{margin:0 0 10px;font-size:13px;color:var(--ink2);line-height:1.6}
.card-m{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.chip{font-size:12px;padding:2px 9px;background:#ecfdf5;color:var(--brand2);border-radius:20px}
.amt{font-size:12px;color:var(--ink3);margin-left:auto}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 8px}
.tag{font-size:12px;padding:3px 10px;border-radius:20px;background:#eff6ff;color:#1e40af}
.tag.gray{background:#f1f5f9;color:var(--ink2)}
.tag.real{background:#fef3c7;color:#92400e}
.tag.inline{padding:1px 8px}
.answer{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:14px 16px;margin:14px 0 22px}
.answer-p{margin:0;font-size:16px;color:var(--ink);line-height:1.75}
.src{background:#f7f9fa;border:1px dashed var(--line);border-radius:10px;padding:11px 14px;margin:14px 0 22px;font-size:13.5px;color:#5b6b74;line-height:1.8}
.src-t{display:inline-block;font-size:11.5px;font-weight:700;color:#5b6b74;background:#e9eef1;border-radius:5px;padding:2px 7px;margin-right:8px;vertical-align:1px}
.src-n{display:block;margin-top:5px;font-size:12.5px;color:#93a3ab}
.src-a{color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.case{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:22px}
.case p{margin:0 0 14px;color:var(--ink2)}
.case p:first-of-type{margin-top:0}
.vcard{background:linear-gradient(160deg,#fff,#f8fafc);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:4px 0 18px}
.vplay{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff!important;font-weight:700;font-size:15px;
  padding:9px 16px;border-radius:10px;text-decoration:none!important;line-height:1.4}
.vplay:hover{background:var(--brand2);text-decoration:none!important}
.vplay-ic{font-size:13px}
.vdesc{margin:12px 0 0!important;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  color:var(--ink2);font-size:14.5px;line-height:1.85}
.vdesc b{color:var(--ink)}
.vmeta{margin:8px 0 0!important;font-size:12.5px;color:#93a3ab;line-height:1.7}
.tag.vid{background:#ede9fe;color:#6d28d9}
.tag.u2{background:#fff7ed;color:#9a3412;border:1px dashed #fdba74}
.tag.story{background:#fdf2f8;color:#a21caf;border:1px solid #f0abfc}
.vid-chip{font-size:11.5px;padding:1px 8px;background:#ede9fe;color:#6d28d9;border-radius:20px;margin-left:6px}
.self-chip{font-size:11.5px;padding:1px 8px;background:#fff7ed;color:#9a3412;border:1px dashed #fdba74;border-radius:20px;margin-left:6px}
.checklist,.chk{list-style:none;padding:0;margin:0}
.chk li{position:relative;padding:8px 0 8px 26px;border-bottom:1px dashed var(--line);color:var(--ink2);font-size:15px}
.chk li:last-child{border-bottom:none}
.chk li:before{position:absolute;left:0;top:8px;font-size:15px}
.chk.ok li:before{content:"\2713";color:var(--ok);font-weight:800}
.chk.help li:before{content:"\26A1";color:var(--warn)}
.lead{color:var(--ink)!important}
.faq{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin-bottom:8px}
.faq summary{font-weight:600;cursor:pointer}
.faq p{margin:8px 0 0;color:var(--ink2);font-size:15px}
.faqs{display:grid;gap:8px}
.recs{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.rec{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px}
.rec-t{display:block;font-weight:600;font-size:14px;margin-bottom:4px}
.rec-m{font-size:12px;color:var(--ink3)}
.cat-head{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.cat-head .cat-ic{background:color-mix(in srgb,var(--c) 12%,#fff);font-size:28px}
.cat-d{margin:0 0 10px;color:var(--ink2);font-size:15px}
.cat-head h1{margin:0}
.alert{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:10px 12px;font-size:14px;color:#78350f}
.subs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}
.sub-t{font-size:13px;padding:5px 12px;border:1px solid var(--line);border-radius:20px;background:#fff;color:var(--ink2)}
.sub-t.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.sub-t span{margin-left:4px;opacity:.7}
.subs+.grid{margin-top:8px}
.empty{margin:0;padding:18px 16px;border:1px dashed var(--line);border-radius:12px;
  background:#fff;color:var(--ink2);font-size:14px;line-height:1.8;text-align:center}
.empty b{color:var(--ink)}
.empty a{color:var(--brand)}
.pager{display:flex;gap:10px;align-items:center;justify-content:center;margin:22px 0}
.pg{font-size:14px;padding:7px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink2)}
.pg.cur{background:var(--brand);color:#fff;border-color:var(--brand)}
.tb{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.tb th,.tb td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
.tb th{background:#f8fafc;color:var(--ink2);font-weight:700}
.tb tr:last-child td{border-bottom:none}
.sb{display:flex;gap:8px;margin:14px 0}
.sb input{flex:1;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:16px}
.sb input:focus{outline:none;border-color:var(--brand)}
.suggest{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.empty{color:var(--ink3);text-align:center;padding:20px}
.more{text-align:center;margin:18px 0}
.ft{background:#0f172a;color:#cbd5e1;margin-top:36px;padding:26px 0}
.ft-t{color:#fff;font-weight:700;margin:0 0 10px}
.ft-o{margin:0 0 12px;padding-left:20px;color:#cbd5e1}
.ft-o li{margin:3px 0}
.ft-c{font-size:13px;color:#94a3b8;margin:4px 0}
.ft a{color:#7dd3fc}
@media(max-width:640px){
 .h1{font-size:22px}
 .hero{padding:18px}
 .hero h1{font-size:23px}
 .nav a{display:none}
 .cats,.grid,.recs{grid-template-columns:1fr}
 .cat-head{flex-direction:column}
 .searchbar input{font-size:16px}
}