:root{--ink:#1b2445;--sun:#ffc21f;--bg:#f7f5f0;--card:#fff;--line:#e6e2d8;--muted:#5c6379;--danger:#d93b40;color:var(--ink);background:var(--bg);font-family:-apple-system,Hiragino Sans,Segoe UI,system-ui,sans-serif;line-height:1.7}body{margin:0}main{max-width:600px;margin:0 auto;padding:20px 16px 48px}header{justify-content:space-between;align-items:center;display:flex}.brand{align-items:center;gap:10px;margin:0;font-weight:700;display:flex}.brand img{border-radius:8px}h1{margin:24px 0 8px;font-size:24px}h2{margin:0 0 6px;font-size:17px}h3{margin:16px 0 4px;font-size:14px}.lead{margin:0 0 16px}.muted{color:var(--muted);font-size:14px}.small{margin-bottom:0;font-size:13px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;padding:18px}.card p{margin:0 0 8px}.notice{background:#fffaeb;border-color:#f2d68a}.notice-inline{color:var(--muted);font-size:13px}ul{margin:0 0 12px;padding-left:20px;font-size:14px}.who{font-weight:600}.check{cursor:pointer;align-items:flex-start;gap:10px;margin:12px 0;font-size:14px;display:flex}.check input{margin-top:5px}.buttons{flex-direction:column;gap:10px;margin:14px 0;display:flex}@media (width>=480px){.buttons{flex-flow:wrap}}button{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;border-radius:12px;padding:11px 18px;font-weight:600}button:disabled{opacity:.45;cursor:default}button.apple{color:#fff;background:#000;border-color:#000}button.google{color:#1f1f1f;background:#fff;border-color:#747775}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}button.link{color:var(--muted);background:0 0;border:none;padding:4px;font-weight:500;text-decoration:underline}.error{color:var(--danger);font-weight:600}footer{color:var(--muted);flex-direction:column;gap:4px;margin-top:28px;font-size:13px;display:flex}a{color:var(--ink)}