:root{--brand:#5b4bff;--brand-dark:#4a3be0;--ink:#15151c;--muted:#6b7280;--line:#e7e7f0;--bg:#fff;--soft:#f6f6fb;--danger:#dc2626;--radius:12px}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:960px;margin:0 auto;padding:18px 20px}
.brand{font-weight:700;font-size:20px;color:var(--ink);letter-spacing:-.02em;display:inline-flex;align-items:center;gap:9px}
.brand:hover{text-decoration:none}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--brand);display:inline-block}
.nav-links{display:flex;gap:16px;align-items:center;font-size:14px}
.container{max-width:960px;margin:0 auto;padding:20px}
.narrow{max-width:460px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
h1{font-size:28px;letter-spacing:-.02em;margin:0 0 8px}
h2{font-size:20px;margin:0 0 14px}
h3{margin:0}
.muted{color:var(--muted)}
.field{margin-bottom:16px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
input[type=text],input[type=password],input[type=number],input[type=file],select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:#fff;color:var(--ink);font-family:inherit}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;border:1px solid transparent;background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;line-height:1}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{background:var(--soft)}
.btn.danger{background:#fff;border-color:#f0c2c2;color:var(--danger)}
.btn.danger:hover{background:#fdecec}
.btn.sm{padding:7px 12px;font-size:13px}
.row{display:flex;gap:12px;align-items:center}
.alert{padding:12px 14px;border-radius:10px;font-size:14px;margin-bottom:18px}
.alert.err{background:#fdecec;color:#9b1c1c;border:1px solid #f3c9c9}
.alert.ok{background:#e8f6ee;color:#0b6b2e;border:1px solid #bfe6cc}
.hero{padding:64px 20px 16px;text-align:center;max-width:680px;margin:0 auto}
.hero h1{font-size:40px;line-height:1.15}
.hero p{font-size:18px;color:var(--muted)}
.cta{display:flex;gap:12px;justify-content:center;margin-top:26px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.share{border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:14px}
.share .meta{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin:8px 0 12px}
.linkbox{display:flex;gap:8px;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:13px;margin-bottom:12px;flex-wrap:wrap}
.linkbox code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all;flex:1;min-width:180px}
details summary{cursor:pointer;font-size:14px;font-weight:600;color:var(--brand);list-style:none}
details summary::-webkit-details-marker{display:none}
details[open] summary{margin-bottom:14px}
.footer{max-width:960px;margin:48px auto 28px;padding:18px 20px 0;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
.viewer-wrap{position:fixed;inset:0;display:flex;flex-direction:column;background:#0b0b12}
.viewer-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 14px;background:#fff;border-bottom:1px solid var(--line)}
.viewer-bar .t{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#viewer{flex:1;width:100%;border:0;background:#fff}
.gate{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--soft)}
.gate .card{width:100%;max-width:380px}
.stat{display:flex;gap:24px;margin-bottom:20px}
.stat .n{font-size:28px;font-weight:700}
@media(max-width:560px){.grid2{grid-template-columns:1fr}.hero h1{font-size:32px}}