:root{font-family:Inter,Microsoft YaHei,PingFang SC,Arial,sans-serif;color:#111827;background:#f6f7f9}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{font:inherit}.offline-page{min-height:100vh;display:grid;place-items:center;padding:32px 18px;background:linear-gradient(135deg,rgba(47,111,237,.08),transparent 36%),linear-gradient(315deg,rgba(16,185,129,.08),transparent 34%),#f6f7f9}.offline-card{width:min(680px,100%);padding:44px;border:1px solid #e5e7eb;border-radius:16px;background:#ffffffeb;box-shadow:0 24px 70px #0f172a14}.offline-badge{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:#eef2ff;color:#3154c9;font-size:13px;font-weight:700}.offline-card h1{margin:18px 0 14px;font-size:clamp(32px,6vw,52px);line-height:1.08;letter-spacing:0}.offline-lead{margin:0;max-width:580px;color:#4b5563;font-size:18px;line-height:1.75}.contact-box{margin-top:30px;padding:18px;display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;border:1px solid #dbe3f0;border-radius:12px;background:#f8fafc}.contact-box span{color:#64748b;font-size:14px;font-weight:700}.contact-box strong{font-size:26px;letter-spacing:0}.contact-box button{height:40px;padding:0 16px;border:0;border-radius:8px;background:#111827;color:#fff;cursor:pointer;font-weight:700}.contact-box button:hover{background:#1f2937}.offline-notes{margin-top:24px;padding-top:22px;border-top:1px solid #e5e7eb;color:#6b7280;font-size:14px;line-height:1.7}.offline-notes p{margin:0 0 6px}@media(max-width:560px){.offline-card{padding:28px 22px;border-radius:12px}.offline-lead{font-size:16px}.contact-box{grid-template-columns:1fr}.contact-box strong{font-size:24px}}