/* Minimal isolated Study999 account/feedback styles. */
.portal-page{max-width:850px;margin:20px auto;padding:14px;font-family:system-ui,'Microsoft YaHei',sans-serif;color:#1e293b}
.portal-page h1{font-size:1.65rem;margin:0 0 10px}.portal-page h2{font-size:1.17rem;margin:0 0 13px}
.portal-page .portal-card{border:1px solid #dbe3ed;border-radius:12px;padding:18px;margin:15px 0;background:#fff}
.portal-page .portal-field{display:block;font-size:15px;font-weight:600;margin:10px 0}.portal-page input,.portal-page textarea,.portal-page select{box-sizing:border-box;display:block;width:100%;padding:10px;margin-top:5px;border:1px solid #b8c4d2;border-radius:8px;font:inherit}
.portal-page button{background:#2563eb;color:white;border:0;border-radius:8px;padding:10px 15px;margin:6px 6px 6px 0;cursor:pointer;font:inherit}
.portal-page button:disabled{opacity:.5;cursor:wait}.portal-page .portal-secret{padding:12px;white-space:pre-wrap;overflow-wrap:anywhere;background:#eefcf2;color:#14532d;border-radius:8px}
.portal-page .portal-small,.portal-page small{font-size:13px;color:#64748b}.portal-page .portal-message-item{padding:11px;margin:8px 0;border-radius:9px;background:#f1f5f9;white-space:pre-wrap;overflow-wrap:anywhere}.portal-page .portal-message-item.admin{background:#eff6ff}
.portal-page .portal-feedback-item{padding:9px 0;border-bottom:1px solid #e2e8f0}.portal-page .portal-feedback-item button{background:#eaf1ff;color:#1d4ed8}
.portal-main-links{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;margin-left:8px}.portal-main-links a{font-size:14px;padding:6px 9px;border-radius:8px;border:1px solid #cbd5e1;text-decoration:none;color:#1d4ed8}.portal-main-links [hidden]{display:none!important}