:root{--ink:#16181f;--mut:#6b7080;--line:#e6e8f0;--bg:#f7f8fb;--card:#fff;--accent:#3339b7;--accent2:#23288f;--code:#0b1020}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.top{background:linear-gradient(160deg,var(--accent),var(--accent2));color:#fff}
.top .wrap{display:flex;align-items:center;gap:16px;padding:14px 20px;flex-wrap:wrap}
.top .brand{color:#fff;font-weight:800;font-size:18px}
.top .tag{color:rgba(255,255,255,.75);font-size:13px}
main.wrap{padding-top:28px;padding-bottom:48px}
.hero h1,.open-hero h1{font-size:30px;letter-spacing:-.02em;margin:.1em 0}
.lead{color:var(--mut);margin:.2em 0 0}
.notice{background:#fff4e5;border:1px solid #f3d9a8;padding:8px 12px;border-radius:8px}
.grid-sec h2{font-size:18px;margin:28px 0 12px}
.fmt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px}
.fmt{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;background:var(--card);border:1px solid var(--line);border-radius:12px;color:var(--ink);transition:border-color .13s,transform .13s}
.fmt:hover{border-color:#c3c8e8;transform:translateY(-2px);text-decoration:none}
.fmt b{font-size:12.5px}
.open-hero{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.viewer-mount{margin:8px 0 26px}
.dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:200px;border:2px dashed #c7cbe6;border-radius:16px;background:var(--card);cursor:pointer;text-align:center;padding:24px;transition:border-color .13s,background .13s}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:#eef0fb}
.dropzone b{font-size:17px}.dropzone span{color:var(--mut);font-size:14px}
.render{margin-top:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.render .bar{display:flex;gap:12px;align-items:center;padding:8px 14px;border-bottom:1px solid var(--line);font-size:13px;color:var(--mut)}
.render .bar .nm{color:var(--ink);font-weight:700}
.codeview{margin:0;max-height:70vh;overflow:auto;font:13px/1.55 ui-monospace,"JetBrains Mono",Consolas,monospace;background:var(--code);color:#e6e9f5}
.codeview table{border-collapse:collapse;width:100%}
.codeview td{padding:0 10px;vertical-align:top;white-space:pre}
.codeview td.ln{text-align:right;color:#5b6180;user-select:none;background:#11162b;position:sticky;left:0}
.tableview{max-height:70vh;overflow:auto}
.tableview table{border-collapse:collapse;width:100%;font-size:13px}
.tableview th,.tableview td{border:1px solid var(--line);padding:4px 9px;text-align:left;white-space:nowrap}
.tableview th{background:#eef0fb;position:sticky;top:0}
.about{border-top:1px solid var(--line);padding-top:20px}
.about h2{font-size:18px}
.facts{display:grid;grid-template-columns:140px 1fr;gap:4px 16px;margin:12px 0}
.facts dt{color:var(--mut)}.facts dd{margin:0}
.soon{padding:40px;text-align:center;background:var(--card);border:1px dashed var(--line);border-radius:14px;color:var(--mut)}
.muted{color:var(--mut);font-size:13px}
.foot{border-top:1px solid var(--line);background:#fff;margin-top:30px}
.foot .wrap{padding:20px}
.foot p{margin:.2em 0}