:root{color-scheme:light dark;--bg:#f3efe7;--card:#faf7f1;--text:#38332d;--muted:#70665b;--line:#d9cfc1;--accent:#9b471e;--button-text:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 -apple-system,BlinkMacSystemFont,'Microsoft YaHei',sans-serif;min-height:100vh;display:grid;place-items:center;padding:32px 20px}a{color:var(--accent);text-underline-offset:4px}.login{width:100%;max-width:460px}.eyebrow{margin-top:36px;color:var(--muted);letter-spacing:2px;font-size:12px}h1{font-size:30px;margin:8px 0}.intro,.hint{color:var(--muted)}.hint{font-size:13px}label{display:block;margin-top:18px}input:not([type=checkbox]){width:100%;padding:12px 14px;background:var(--card);color:var(--text);border:1px solid var(--line);border-radius:8px;font:inherit;min-width:0}.code-row{display:flex;gap:10px}.code-row button{white-space:nowrap}button{font:inherit;border:1px solid var(--accent);border-radius:8px;padding:10px 16px;background:var(--card);color:var(--accent);cursor:pointer}button:disabled{opacity:.55;cursor:default}.agreement{display:flex;align-items:flex-start;gap:8px;font-size:13px}.agreement input{margin-top:6px;accent-color:var(--accent)}#submit{margin-top:22px;width:100%;background:var(--accent);color:var(--button-text)}#status{min-height:28px;font-size:14px}input:focus-visible,button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@media(prefers-color-scheme:dark){:root{--bg:#211f1c;--card:#292621;--text:#e0d8cc;--muted:#b4a797;--line:#484036;--accent:#e4a06a;--button-text:#211f1c}}
:root[data-theme="dark"]{--bg:#211f1c;--card:#292621;--text:#e0d8cc;--muted:#b4a797;--line:#484036;--accent:#e4a06a;--button-text:#211f1c}
:root[data-theme="light"]{--bg:#f3efe7;--card:#faf7f1;--text:#38332d;--muted:#70665b;--line:#d9cfc1;--accent:#9b471e;--button-text:#fff}
body.embedded{padding:38px 24px 24px;min-height:100vh;align-items:start}body.embedded .eyebrow{margin-top:0}body.embedded h1{font-size:26px;line-height:1.4}