:root{color-scheme:dark;--bg:#121416;--card:#1c2025;--line:#3b434d;--text:#f4f6f8;--muted:#bdc6d1;--accent:#a9c9ff;--button:#2654a5;--bad:#ffb4b4;--good:#94e0be;--warn:#f8d18f}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}button,input,.button{font:inherit}button,.button{touch-action:manipulation;cursor:pointer;border-radius:12px;min-height:46px;padding:10px 16px;border:1px solid transparent;font-weight:600;text-align:center;text-decoration:none}button:disabled{cursor:default;color:#a5aeb9;background:#30363e;border-color:#515b68}button:focus-visible,.button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.app-shell{max-width:920px;margin:auto;padding:env(safe-area-inset-top) 18px env(safe-area-inset-bottom)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 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