:root{color-scheme:light;--ink:#172b26;--muted:#62716b;--line:#e4eae7;--accent:#246b59}
*{box-sizing:border-box}
body{margin:0;background:#f5f7f6;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.65;-webkit-font-smoothing:antialiased}
button,input{font:inherit}a{color:inherit}button{cursor:pointer}
.auth-shell{min-height:100vh;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px}
.auth-card{width:100%;max-width:480px;padding:40px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 40px -24px rgb(23 43 38 / 20%)}
.brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:650;letter-spacing:-.6px;text-decoration:none;width:fit-content}.brand img{display:block}
header{margin:30px 0 26px}h1{font-size:25px;font-weight:650;line-height:1.4;letter-spacing:-.5px;margin:0 0 10px}header p{margin:0;color:var(--muted)}
.status{display:flex;align-items:center;gap:8px;margin-top:28px;color:var(--accent);font-size:12px;font-weight:600}.status+header{margin-top:12px}.status-dot{height:7px;width:7px;background:#38866c;border-radius:50%}.status-warning{color:#8b5c24}
.identity{display:flex;align-items:center;gap:12px;padding:16px;border:1px solid var(--line);border-radius:12px;background:#f8faf9;margin-bottom:26px}.avatar{display:grid;place-items:center;flex-shrink:0;width:40px;height:40px;border-radius:10px;background:#e7efea;color:var(--accent);font-weight:600;font-size:18px}.identity-details{display:flex;flex:1;min-width:0;flex-direction:column;gap:1px;overflow-wrap:anywhere}.label{font-size:11px;color:var(--muted)}.identity strong{font-weight:600;font-size:15px}.email{font-size:12px;color:var(--muted)}.provider{font-size:10px;color:var(--muted);white-space:nowrap;align-self:flex-start;padding-top:3px}
.primary,.secondary{width:100%;min-height:48px;padding:12px 16px;display:flex;align-items:center;justify-content:center;gap:12px;border:1px solid transparent;border-radius:10px;text-decoration:none;font-weight:600;background:var(--ink);color:#fff;transition:background .15s ease}.primary:hover{background:#245143}.primary:active{background:#0e211b}.secondary{background:#fff;color:var(--muted);border-color:var(--line);margin-top:12px}.secondary:hover{background:#f7f9f8}
.action-note{margin:12px 0 0;color:var(--muted);font-size:12px;text-align:center}.sign-out{margin-top:16px;text-align:center}.text-button{border:0;background:transparent;color:var(--muted);padding:9px 12px;font-size:12px;text-decoration:underline;text-underline-offset:4px}.text-button:hover{color:var(--ink)}
.notice{padding:10px 12px;margin:0 0 20px;background:#f0f7f3;color:var(--accent);border:1px solid #d6e8de;border-radius:8px}.session-note{margin:24px 0 0;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.help{margin-top:22px;font-size:12px;color:var(--muted)}.help summary{cursor:pointer;padding:4px 0;color:var(--ink)}.help p{margin-bottom:0}.hint{font-size:12px;color:var(--muted);margin-top:20px}
footer{margin-top:24px;color:#738079;font-size:12px}footer span{padding:0 7px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #a5cdbb;outline-offset:4px}
@media(max-width:480px){.auth-shell{padding:28px 16px}.auth-card{padding:30px 24px;border-radius:20px}h1{font-size:23px}.identity{padding:12px;gap:10px}.provider{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}