:root{--bg:#f6f7f9;--surface:#fff;--text:#1d2330;--muted:#667085;--border:#dfe3ea;--primary:#c2410c;--primary-contrast:#fff;--danger:#b42318;--ok:#067647;--warn:#b54708;--radius:10px;--font:Tahoma,"Segoe UI",system-ui,-apple-system,Arial,sans-serif}
[data-theme="dark"]{--bg:#12151c;--surface:#1b2030;--text:#e8ebf2;--muted:#9aa3b5;--border:#2c3447;--primary:#f97316;--primary-contrast:#1b1206;--danger:#f97066;--ok:#47cd89;--warn:#fdb022}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#12151c;--surface:#1b2030;--text:#e8ebf2;--muted:#9aa3b5;--border:#2c3447;--primary:#f97316;--primary-contrast:#1b1206;--danger:#f97066;--ok:#47cd89;--warn:#fdb022}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7}
a{color:var(--primary)}
img,video{max-width:100%;height:auto}
h1,h2{line-height:1.3}
.muted{color:var(--muted)}
.inline{display:inline}
code{font-size:.85em;background:var(--bg);padding:.1em .35em;border-radius:5px}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .9rem;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);text-decoration:none;cursor:pointer;font:inherit;font-size:.92rem}
.btn:hover{border-color:var(--primary)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--primary);border-color:var(--primary);color:var(--primary-contrast)}
.btn-danger{color:var(--danger);border-color:var(--danger)}
.btn-ghost{border-color:transparent;background:transparent}
.btn.block{width:100%;justify-content:center}