:root{--ink:#18332d;--muted:#6f7f78;--paper:#f5f1e8;--card:#fffdf8;--green:#174c40;--line:#dedbd2}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% 15%,#dcece4 0,transparent 32%),radial-gradient(circle at 85% 85%,#f2dfd6 0,transparent 30%),var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif}.login-shell{min-height:100vh;display:grid;place-items:center;padding:28px}.login-card{width:min(460px,100%);padding:48px;background:rgba(255,253,248,.94);border:1px solid var(--line);border-radius:28px;box-shadow:0 24px 70px rgba(24,51,45,.12)}.brand-mark{width:52px;height:52px;border-radius:16px;background:var(--green);color:#fff;display:grid;place-items:center;font:25px Georgia,serif;box-shadow:inset 0 0 0 1px rgba(255,255,255,.2)}.eyebrow{margin:28px 0 10px;font-size:10px;letter-spacing:.18em;color:#55766d;font-weight:800}h1{font:500 38px/1.15 Georgia,"Noto Serif TC",serif;letter-spacing:-.025em;margin:0}.intro{color:var(--muted);font-size:14px;line-height:1.75;margin:18px 0 28px}.google-button{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:15px 18px;border-radius:14px;background:var(--green);color:#fff;text-decoration:none;font-size:14px;font-weight:750;box-shadow:0 12px 28px rgba(23,76,64,.2);transition:transform .2s,box-shadow .2s}.google-button:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(23,76,64,.25)}.google-mark{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#fff;color:#4285f4;font:bold 14px Arial,sans-serif}.privacy{color:#89938e;font-size:10px;line-height:1.6;text-align:center;margin:18px 12px 0}.error{background:#fae3dd;color:#9e4635;border-radius:12px;padding:12px 14px;font-size:12px;line-height:1.5;margin:0 0 18px}@media(max-width:560px){.login-shell{padding:16px}.login-card{padding:34px 26px}h1{font-size:32px}}