:root{
  --brand:#0f4c81;--brand-2:#1769aa;--ink:#182230;--muted:#64748b;--line:#e2e8f0;
  --soft:#f5f8fb;--soft-blue:#eef6fc;--green:#147d64;--amber:#a85d00;--white:#fff;
  --shadow:0 8px 30px rgba(15,76,129,.08);--radius:14px;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.65}
a{color:var(--brand);text-decoration:none}a:hover{color:var(--brand-2)}button,input{font:inherit}
.container{width:min(var(--max),calc(100% - 32px));margin:auto}.site-header{border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:50;backdrop-filter:blur(10px)}
.header-inner{height:66px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;font-size:15px}.brand small{display:block;font-size:10px;letter-spacing:.08em;color:var(--muted);font-weight:600}.nav{display:flex;gap:22px;font-size:14px}.nav a{color:#334155}.nav a:hover{color:var(--brand)}
.hero{background:linear-gradient(180deg,#f4f9fd 0,#fff 100%);border-bottom:1px solid #edf2f7;padding:46px 0 32px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}.breadcrumb a{color:var(--muted)}.hero h1{font-size:32px;line-height:1.25;margin:0 0 12px;letter-spacing:-.02em}.hero p{margin:0;color:var(--muted);max-width:820px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--brand);font-size:13px;font-weight:700;margin-bottom:10px}.eyebrow:before{content:"";width:22px;height:2px;background:var(--brand)}
.search-shell{margin-top:24px;position:relative;max-width:760px}.search-box{display:flex;align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:12px;box-shadow:0 10px 25px rgba(15,76,129,.08);overflow:hidden}.search-box:focus-within{border-color:#7db4db;box-shadow:0 0 0 3px rgba(23,105,170,.09)}.search-box input{flex:1;border:0;outline:0;padding:15px 16px;font-size:15px;min-width:0}.search-box button{border:0;background:var(--brand);color:#fff;padding:15px 22px;cursor:pointer;font-weight:700}.search-hint{font-size:12px;color:var(--muted);margin-top:8px}.search-results{display:none;position:absolute;left:0;right:0;top:54px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);max-height:380px;overflow:auto;z-index:60}.search-results.show{display:block}.search-result{display:flex;justify-content:space-between;gap:16px;padding:11px 14px;border-bottom:1px solid #edf2f7;color:var(--ink)}.search-result:last-child{border-bottom:0}.search-result:hover{background:#f8fafc}.search-result strong{font-size:14px}.search-result small{display:block;color:var(--muted)}.search-code{font-variant-numeric:tabular-nums;color:var(--brand);font-weight:800}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}.stat strong{display:block;font-size:24px;color:var(--brand);line-height:1.2}.stat span{font-size:13px;color:var(--muted)}
.section{padding:34px 0}.section.alt{background:var(--soft)}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}.section-head h2{margin:0;font-size:22px}.section-head p{margin:4px 0 0;color:var(--muted);font-size:14px}.category-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}.category-card{display:block;border:1px solid var(--line);border-radius:12px;background:#fff;padding:15px;transition:.18s}.category-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#b8d3e7}.category-code{font-size:12px;color:var(--brand);font-weight:800}.category-card h3{font-size:16px;margin:5px 0 4px;color:var(--ink)}.category-card p{margin:0;font-size:12px;color:var(--muted)}
.panel{border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 3px 15px rgba(15,23,42,.03);overflow:hidden}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding:14px;border-bottom:1px solid var(--line);background:#fbfdff}.filter-btn{border:1px solid #cbd5e1;background:#fff;color:#475569;border-radius:999px;padding:7px 13px;cursor:pointer;font-size:13px}.filter-btn.active{background:var(--brand);border-color:var(--brand);color:#fff}.count-note{margin-left:auto;font-size:13px;color:var(--muted)}
.table-wrap{overflow:auto}.directory-table{width:100%;border-collapse:collapse}.directory-table th,.directory-table td{padding:13px 16px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:middle}.directory-table th{font-size:12px;color:#64748b;background:#f8fafc;white-space:nowrap}.directory-table td{font-size:14px}.directory-table tr:last-child td{border-bottom:0}.directory-table tr:hover td{background:#fbfdff}.code-pill{font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}.type-pill{display:inline-flex;padding:3px 8px;border-radius:999px;font-size:12px;background:#eef2f7;color:#475569;white-space:nowrap}.type-pill.prof{background:#edf8f4;color:var(--green)}.type-pill.master{background:#fff5e6;color:var(--amber)}.name-link{font-weight:700;color:var(--ink)}.name-link:hover{color:var(--brand)}
.info-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}.detail-card{padding:24px}.detail-title-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-bottom:22px}.big-code{display:inline-grid;place-items:center;min-width:84px;height:56px;padding:0 14px;border-radius:11px;background:var(--brand);color:#fff;font-size:22px;font-weight:800;letter-spacing:.03em}.detail-title-row h2{margin:0;font-size:25px}.meta-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.meta-item{padding:15px 16px;border-bottom:1px solid var(--line)}.meta-item:nth-child(odd){border-right:1px solid var(--line)}.meta-item:nth-last-child(-n+2){border-bottom:0}.meta-item span{display:block;font-size:12px;color:var(--muted);margin-bottom:3px}.meta-item strong{font-size:14px}.notice{margin-top:18px;border-left:4px solid var(--brand);background:var(--soft-blue);padding:13px 15px;border-radius:0 9px 9px 0;font-size:13px;color:#40566d}.notice.warn{border-left-color:#d48a16;background:#fff8eb}.side-card{border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:#fff;margin-bottom:16px}.side-card h3{font-size:16px;margin:0 0 10px}.side-list{display:grid;gap:8px}.side-list a{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed #e2e8f0;color:#334155;font-size:13px}.side-list a:last-child{border-bottom:0}.side-list code{color:var(--brand);font-family:inherit;font-weight:700}.source-list{margin:0;padding-left:20px;color:#475569;font-size:14px}.source-list li{margin:6px 0}
.explain{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}.explain h2,.explain h3{margin-top:0}.explain p{color:#475569}.code-demo{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin:15px 0}.code-demo strong{font-size:28px;color:var(--brand);letter-spacing:.08em}.code-demo span{color:var(--muted);font-size:13px}.mapping-table{width:100%;border-collapse:collapse}.mapping-table th,.mapping-table td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;font-size:14px}.mapping-table th{background:#f8fafc;color:var(--muted);font-size:12px}
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:#f8fafc;padding:30px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer-grid h3{font-size:14px;margin:0 0 10px}.footer-grid p,.footer-grid a{font-size:12px;color:#64748b}.footer-links{display:grid;gap:6px}.footer-bottom{margin-top:25px;padding-top:17px;border-top:1px solid var(--line);font-size:12px;color:#94a3b8;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
.empty{padding:36px;text-align:center;color:var(--muted)}.mobile-only{display:none}

.skip-link{position:fixed;left:12px;top:-60px;z-index:200;background:#0f172a;color:#fff;padding:8px 12px;border-radius:8px;font-size:13px}.skip-link:focus{top:12px;color:#fff}
.nav-toggle{display:none;width:40px;height:38px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);font-size:20px;line-height:1;cursor:pointer}.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff}.mobile-nav .container{display:grid;padding-top:8px;padding-bottom:10px}.mobile-nav a{padding:10px 2px;border-bottom:1px solid #edf2f7;color:#334155;font-size:14px}.mobile-nav a:last-child{border-bottom:0}.mobile-nav.open{display:block}
.table-empty{padding:28px 16px;text-align:center;color:var(--muted);font-size:14px;background:#fff}.toolbar input{transition:border-color .15s,box-shadow .15s}.toolbar input:focus{border-color:#7db4db!important;box-shadow:0 0 0 3px rgba(23,105,170,.09);outline:0}.filter-btn:focus-visible,.search-box button:focus-visible,.nav-toggle:focus-visible,a:focus-visible{outline:2px solid #1769aa;outline-offset:2px}
@media(max-width:900px){.nav{display:none}.nav-toggle{display:inline-grid;place-items:center}.hero{padding-top:32px}.hero h1{font-size:27px}.stats{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(4,1fr)}.info-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:640px){.container{width:min(100% - 24px,var(--max))}.header-inner{height:58px}.brand small{display:none}.hero h1{font-size:24px}.hero p{font-size:14px}.search-box button{padding:14px 15px}.stats{gap:9px}.stat{padding:13px}.stat strong{font-size:20px}.category-grid{grid-template-columns:repeat(2,1fr)}.section{padding:26px 0}.section-head{align-items:start}.directory-table thead{display:none}.directory-table,.directory-table tbody,.directory-table tr,.directory-table td{display:block;width:100%}.directory-table tr{padding:13px 14px;border-bottom:1px solid var(--line)}.directory-table td{border:0;padding:2px 0}.directory-table td:nth-child(1),.directory-table td:nth-child(3),.directory-table td:nth-child(4){display:inline-block;width:auto;margin-right:8px}.directory-table td:nth-child(2){font-size:16px;margin:2px 0 4px}.meta-grid{grid-template-columns:1fr}.meta-item:nth-child(odd){border-right:0}.meta-item:nth-last-child(2){border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.count-note{width:100%;margin-left:0}.detail-card{padding:18px}.big-code{height:48px;font-size:19px}.detail-title-row h2{font-size:21px}}