.portal-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 20%,#ddd8ff 0,transparent 30%),radial-gradient(circle at 80% 80%,#d9f1ff 0,transparent 28%),#f4f6fb}.portal-card{width:min(440px,96vw);padding:34px;display:grid;gap:16px}.portal-card h1{text-align:center;margin:0}.portal-card>p{text-align:center;margin:-8px 0 4px}.brand-mark{width:58px;height:58px;border-radius:17px;background:linear-gradient(135deg,#725df7,#4d36db);display:grid;place-items:center;color:#fff;font-size:30px;font-weight:900;margin:auto}.tabs{display:grid;grid-template-columns:1fr 1fr;background:#eef2f7;border-radius:12px;padding:4px}.tabs button{border:0;background:transparent;border-radius:9px;padding:9px;font-weight:800}.tabs button.active{background:#fff;box-shadow:0 3px 9px #0001;color:#4f46e5}.login-pane{display:grid;gap:14px}.login-pane .btn{padding:12px}.portal-error{color:#b42318;text-align:center;min-height:20px}.support{text-align:center;color:#64748b;font-size:13px}.portal-app{min-height:100vh}.portal-app>header{height:72px;background:#111827;color:#fff;padding:0 26px;display:flex;align-items:center;justify-content:space-between}.portal-app>header b{font-size:21px}.portal-app>header span{margin-left:14px;color:#a5b4fc}.portal-app>main{padding:24px;display:grid;grid-template-columns:300px 1fr;gap:20px}.mailbox-list,.mail-list{padding:18px}.mailbox-list h2,.mail-head h2{margin:0 0 12px}.mailbox-btn{width:100%;border:1px solid var(--line);border-radius:12px;background:#fff;text-align:left;padding:12px;margin-bottom:9px}.mailbox-btn.active{border-color:#5b4df5;background:#f0efff}.mailbox-btn b{display:block;word-break:break-all}.mailbox-btn span{color:#64748b;font-size:12px}.mail-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.message-card{border:1px solid var(--line);border-radius:14px;padding:15px;margin-bottom:11px}.message-card h3{margin:0 0 6px}.message-meta{display:flex;gap:12px;flex-wrap:wrap;color:#64748b;font-size:12px}.message-body{white-space:pre-wrap;word-break:break-word;margin-top:12px;border-top:1px solid #eef2f7;padding-top:12px;max-height:360px;overflow:auto}.code-chip{display:inline-block;background:#ede9fe;color:#4c1d95;border-radius:8px;padding:5px 9px;font-weight:900;letter-spacing:1px}@media(max-width:800px){.portal-app>main{grid-template-columns:1fr;padding:12px}.portal-app>header{padding:0 14px}}