:root{--fg:#1a2230;--muted:#5b6676;--border:#d8dee8;--accent:#1f6feb;--bg:#f6f8fc;--card:#ffffff;--header:#11203a}*{box-sizing:border-box}body,html{background:var(--bg)}body{margin:0;color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}header.app-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 28px;background:var(--header);color:#fff}header.app-bar strong{font-size:15px;letter-spacing:.2px}header.app-bar nav a{color:#cdd9ee;margin-left:18px;text-decoration:none;font-size:14px}header.app-bar nav a:hover{color:#fff}main{max-width:1040px;margin:0 auto;padding:24px 28px}h1{font-size:22px;margin:0 0 6px}h2{font-size:17px;margin:24px 0 8px}h3{font-size:15px;margin:16px 0 6px}p{margin:8px 0}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}small{color:var(--muted)}table{border-collapse:collapse;width:100%;margin:14px 0;background:var(--card)}caption{color:var(--muted);padding:4px 0;font-size:13px}caption,td,th{text-align:left}td,th{border:1px solid var(--border);padding:8px 11px;font-size:14px;vertical-align:top}th{background:#eef2f8;font-weight:600}tbody tr:nth-child(2n) td{background:#fbfcfe}form{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px 20px;margin:14px 0;max-width:520px}fieldset{border:1px solid var(--border);border-radius:6px;margin:10px 0;padding:10px 14px}legend{font-size:13px;padding:0 6px}label,legend{font-weight:600}label{display:block;margin:10px 0 4px;font-size:14px}input,select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:#fff}input[type=checkbox],input[type=file],input[type=radio]{width:auto}label input[type=checkbox],label input[type=radio]{margin-right:6px}button,input[type=submit]{margin-top:14px;padding:9px 16px;background:var(--accent);color:#fff;border:0;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer}button:hover,input[type=submit]:hover{filter:brightness(.94)}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;background:#eef2f8;padding:1px 5px;border-radius:4px}audio{width:100%;margin:6px 0}