*{box-sizing:border-box}
:root{
  --bg:#f6f7f9;--card:#fff;--text:#18202a;--muted:#687386;--line:#e6e9ef;
  --accent:#1d4ed8;--accent2:#eff6ff;--danger:#b42318;--shadow:0 8px 30px rgba(15,23,42,.07)
}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif}
a{color:inherit;text-decoration:none}.container{width:min(1120px,calc(100% - 32px));margin:auto}
.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;font-size:18px}.nav-actions{display:flex;gap:10px;align-items:center}
.btn{border:1px solid var(--line);background:#fff;color:var(--text);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:650;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:7px}
.btn:hover{transform:translateY(-1px);box-shadow:0 5px 16px rgba(15,23,42,.08)}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.danger{color:var(--danger);border-color:#f1c8c5;background:#fff}
.btn.ghost{background:transparent}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.hero{padding:58px 0 30px}.hero h1{font-size:clamp(30px,6vw,54px);letter-spacing:-.03em;margin:0 0 12px}.hero p{margin:0;color:var(--muted);font-size:17px;line-height:1.7}
.toolbar{display:grid;grid-template-columns:1fr auto;gap:12px;margin:22px 0 18px}
.search{display:flex;gap:10px}.search input,.form input,.form select,.form textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:11px 12px;outline:none;font:inherit}
.search input:focus,.form input:focus,.form select:focus,.form textarea:focus{border-color:#8bb0ff;box-shadow:0 0 0 3px rgba(29,78,216,.08)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.chip{border:1px solid var(--line);background:#fff;padding:8px 12px;border-radius:999px;font-size:13px;cursor:pointer}.chip.active{border-color:var(--accent);background:var(--accent2);color:var(--accent);font-weight:700}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding-bottom:48px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;min-height:220px}
.card-top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.file-icon{width:42px;height:42px;border-radius:12px;background:var(--accent2);display:grid;place-items:center;font-size:21px}
.badge{font-size:12px;padding:5px 8px;border-radius:999px;background:#f2f4f7;color:#475467;white-space:nowrap}
.card h3{margin:0;font-size:17px;line-height:1.4;overflow-wrap:anywhere}.desc{color:var(--muted);font-size:14px;line-height:1.55;min-height:43px}
.meta{font-size:12px;color:#8a94a6;display:flex;gap:10px;flex-wrap:wrap}.card-actions{margin-top:auto;display:flex;gap:8px}.card-actions .btn{flex:1}
.empty,.loading,.notice{padding:34px;text-align:center;background:#fff;border:1px dashed #d7dce5;border-radius:14px;color:var(--muted)}
.footer{padding:24px 0 45px;color:#8a94a6;font-size:13px;text-align:center}
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);margin:26px 0}
.panel h2{margin:0 0 16px}.form{display:grid;gap:13px}.form label{font-size:13px;font-weight:700;color:#475467;display:grid;gap:7px}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.status{margin-top:12px;padding:10px 12px;border-radius:10px;font-size:13px;display:none}.status.show{display:block}.status.ok{background:#ecfdf3;color:#027a48}.status.err{background:#fef3f2;color:#b42318}.admin-list{display:grid;gap:10px}.admin-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:13px;border:1px solid var(--line);border-radius:12px;align-items:center}.admin-row small{color:var(--muted)}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--accent);background:var(--accent2);padding:7px 10px;border-radius:999px;margin-bottom:14px}
code{background:#f2f4f7;padding:2px 5px;border-radius:5px}
@media(max-width:850px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.container{width:min(100% - 22px,1120px)}.nav{height:58px}.grid{grid-template-columns:1fr}.toolbar{grid-template-columns:1fr}.two{grid-template-columns:1fr}.hero{padding-top:38px}.nav .muted-link{display:none}}