:root{color-scheme:dark;--bg: #0f1117;--card: #181b24;--border: #262a36;--text: #e6e8ee;--muted: #8b90a0;--accent: #4f7cff}*{box-sizing:border-box}body{margin:0;font-family:system-ui,Segoe UI,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}header{display:flex;align-items:baseline;gap:12px;padding:28px 32px 12px}.brand{font-size:22px;font-weight:700}.sub{color:var(--muted);font-size:14px}main{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;padding:16px 32px;max-width:1080px;width:100%;margin:0 auto;flex:1}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px}.card.wide{grid-column:1 / -1}h2{margin:0 0 14px;font-size:16px}.version{font-size:26px;font-weight:700;margin:0 0 6px}.notes{color:var(--muted);font-size:14px;white-space:pre-wrap;margin:0 0 14px}.muted{color:var(--muted);font-size:14px}.qr{width:180px;height:180px;object-fit:contain;background:#fff;border-radius:10px;padding:8px}.btn{border:1px solid var(--border);background:#1f2330;color:var(--text);border-radius:8px;padding:8px 16px;font-size:14px;cursor:pointer;text-decoration:none;display:inline-block}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn:disabled{opacity:.5;cursor:not-allowed}footer{padding:18px 32px;color:var(--muted);font-size:13px}footer a{color:var(--accent)}main>.card.narrow{max-width:420px}.col{display:flex;flex-direction:column;gap:12px}.col label{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--muted)}.col input[type=text],.col input:not([type]),.col input[type=password],.col textarea{background:#0c0e14;border:1px solid var(--border);border-radius:8px;color:var(--text);padding:8px 10px;font-size:14px;font-family:inherit}.col input[type=file]{font-size:13px}.notice{margin:0;padding:10px 16px;border:1px solid var(--border);border-radius:10px;background:var(--card);font-size:14px}