:root {
  --navy: #252864;
  --navy-dark: #181a46;
  --navy-light: #eef0f8;
  --red: #a52a32;
  --red-dark: #861f26;
  --blue: #2b4f8a;
  --blue-dark: #203d6d;
  --blue-light: #eef3fa;
  --blue-th: #f3f5fa;
  --text: #202431;
  --muted: #6d7482;
  --border: #e1e5ee;
  --border-light: #edf0f5;
  --bg: #f4f6fa;
  --surface: #fff;
}

* { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.65;
  margin: 0;
  min-height: 100vh;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  margin: 0 auto;
  max-width: 1140px;
  padding: 0 15px;
}

/* Header */
.site-header {
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(24, 26, 70, 0.04);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 28px;
  min-height: 74px;
}

.brand {
  align-items: center;
  color: var(--navy);
  display: flex;
  flex-shrink: 0;
  gap: 11px;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-logo {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 50%;
  height: 46px;
  object-fit: contain;
  padding: 1px;
  width: 46px;
}
.brand-name {
  display: flex;
  flex-direction: column;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.15;
}
.brand-sub {
  color: var(--muted);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-top: 3px;
}

.main-nav {
  align-items: stretch;
  display: flex;
  gap: 25px;
}
.main-nav a {
  border-bottom: 2px solid transparent;
  color: #3a4050;
  font-size: 14px;
  padding: 26px 0 22px;
  text-decoration: none;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--navy); text-decoration: none; }
.main-nav a.active { border-bottom-color: var(--red); color: var(--navy); font-weight: 600; }

.account {
  align-items: center;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 13px;
  gap: 12px;
  margin-left: auto;
}
.account-user { color: #333; font-weight: 600; }
.account-points { color: var(--muted); }
.inline-form { display: inline; margin: 0; }
.link-button {
  background: none;
  border: 0;
  color: #1976d2;
  cursor: pointer;
  font-size: 13px;
  padding: 0;
}
.link-button:hover { text-decoration: underline; }
.account-link { color: #1976d2; font-size: 13px; }
.account-link:hover { text-decoration: underline; }

/* Buttons */
.btn {
  background: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  display: inline-block;
  font-size: 14px;
  line-height: 1.4;
  padding: 8px 18px;
  text-align: center;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.btn-primary:hover { background: var(--navy-dark); border-color: var(--navy-dark); color: #fff; }
.btn-light {
  background: var(--navy-light);
  border-color: #dfe3f1;
  color: var(--navy);
}
.btn-light:hover { background: #e2e6f3; color: var(--navy-dark); }
.btn-outline {
  border-color: #cbd2e1;
  color: var(--navy);
}
.btn-outline:hover { background: var(--navy-light); }
.btn-sm { font-size: 13px; padding: 4px 11px; }

/* Main */
.main {
  flex: 1;
  padding: 26px 15px 56px;
}

.page-title {
  color: var(--navy);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.page-head {
  align-items: flex-end;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  margin-bottom: 18px;
}
.page-head .page-title { margin: 0 0 4px; }
.page-count {
  background: var(--navy-light);
  border-radius: 999px;
  color: var(--navy);
  font-size: 12px;
  padding: 4px 12px;
  white-space: nowrap;
}

.section-title {
  color: var(--navy);
  font-size: 20px;
  font-weight: 700;
  margin: 26px 0 12px;
}
.section-title:first-child { margin-top: 0; }

.meta-line {
  color: var(--muted);
  font-size: 13px;
  margin: -6px 0 16px;
}
.meta-line span { margin-right: 18px; }

.notice {
  background: #f6f7fc;
  border: 1px solid #dfe3f1;
  border-left: 3px solid var(--red);
  border-radius: 6px;
  color: #4a5162;
  font-size: 13px;
  margin-bottom: 16px;
  padding: 10px 13px;
}

.text-block {
  color: #333;
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
}

/* Home */
.home-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) 320px;
}
.home-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  box-shadow: 0 1px 3px rgba(24, 26, 70, 0.035);
  padding: 18px 20px;
}
.section-head {
  align-items: center;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  padding-bottom: 9px;
}
.section-head h2 {
  color: var(--navy);
  font-size: 17px;
  font-weight: 700;
  margin: 0;
}
.section-head a {
  color: var(--muted);
  font-size: 12px;
}
.section-head a:hover { color: var(--navy); }
.brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.brief-list li {
  align-items: baseline;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 11px 0;
}
.brief-list li:last-child { border-bottom: 0; padding-bottom: 2px; }
.brief-list a {
  color: #333b4d;
  font-size: 13px;
  line-height: 1.55;
}
.brief-list a:hover { color: var(--navy); }
.brief-list span {
  color: var(--muted);
  flex-shrink: 0;
  font-size: 11px;
}
.rank-list {
  list-style: none;
  margin: 0;
  padding: 2px 0 0;
}
.rank-list li {
  align-items: center;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 10px;
  padding: 10px 0;
}
.rank-list li:last-child { border-bottom: 0; }
.rank-index {
  align-items: center;
  background: #f0f2f8;
  border-radius: 50%;
  color: var(--muted);
  display: inline-flex;
  flex-shrink: 0;
  font-size: 11px;
  height: 22px;
  justify-content: center;
  width: 22px;
}
.rank-1 { background: var(--red); color: #fff; }
.rank-2 { background: var(--navy); color: #fff; }
.rank-3 { background: #b9a06a; color: #fff; }
.rank-name {
  color: #333b4d;
  flex: 1;
  font-size: 13px;
}
.rank-points {
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}
.rank-points small {
  color: var(--muted);
  font-size: 10px;
  font-weight: 400;
  margin-left: 2px;
}
.empty-line {
  color: var(--muted);
  font-size: 13px;
  padding: 14px 0;
}

/* Tables */
.table-wrap { overflow-x: auto; }

.table {
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: 0;
  width: 100%;
}
.table th,
.table td {
  border: 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 13px;
  padding: 11px 12px;
  text-align: center;
  vertical-align: middle;
}
.table th {
  background: var(--blue-th);
  border-bottom: 1px solid var(--border);
  color: var(--navy);
  font-weight: 600;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: #fafbff; }
.table a { color: var(--navy); }
.table a:hover { color: var(--red); }

.detail-table {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.detail-table th {
  background: #f7f8fc;
  font-weight: 600;
  text-align: left;
  width: 150px;
}
.detail-table td { text-align: left; word-break: break-all; }

.col-id { width: 70px; }
.col-time { width: 180px; }
.col-sev { width: 100px; }
.col-score { width: 80px; }
.col-status { width: 100px; }
.col-submitter { width: 160px; }
.col-rank { width: 80px; }
.col-points { width: 100px; }

/* Severity / status */
.sev {
  border-radius: 2px;
  color: #fff;
  display: inline-block;
  font-size: 13px;
  line-height: 1.5;
  min-width: 44px;
  padding: 1px 7px;
  text-align: center;
}
.sev-critical { background: #c62828; }
.sev-high { background: #ef6c00; }
.sev-medium { background: #1e88e5; }
.sev-low { background: #78909c; }

.status { font-size: 13px; }
.status-pending { color: #ef6c00; }
.status-confirmed { color: #1e88e5; }
.status-fixed { color: #2e7d32; }
.status-closed { color: #888; }

.rank { color: #333; }
.rank-top { color: #ef6c00; font-weight: 700; }

/* Forms */
.form-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(24, 26, 70, 0.035);
  margin: 0 auto;
  max-width: 780px;
  padding: 26px 30px;
}
.form-box.narrow { margin: 36px auto; max-width: 420px; }
.form-box.medium { margin: 24px auto; max-width: 640px; }

.form-section { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--border-light); }
.form-section:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.form-section-title {
  color: var(--navy);
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 12px;
}

.form-grid {
  display: grid;
  gap: 0 16px;
  grid-template-columns: 1fr 1fr;
}

.form-field { margin-bottom: 14px; }
.form-field > label,
form > div > label {
  color: #333;
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 5px;
}
.form-field .req { color: #d32f2f; font-weight: 400; }
.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="password"],
.form-field input[type="url"],
.form-field input[type="number"],
.form-field input[type="date"],
.form-field select,
.form-field textarea,
form input[type="text"],
form input[type="email"],
form input[type="password"],
form input[type="url"],
form input[type="number"],
form input[type="date"],
form select,
form textarea {
  background: #fff;
  border: 1px solid #ccd2df;
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  width: 100%;
}
.form-field textarea,
form textarea { min-height: 130px; resize: vertical; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus,
form input:focus,
form select:focus,
form textarea:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(37, 40, 100, 0.1);
  outline: none;
}
.form-field .helptext,
form .helptext { color: #888; font-size: 12px; margin-top: 4px; }
.form-field .errorlist,
form .errorlist { color: #d32f2f; font-size: 12px; margin: 4px 0 0; padding-left: 16px; }

.checkbox-field { align-items: center; display: flex; gap: 7px; }
.checkbox-field input { height: 15px; width: 15px; }
.checkbox-field label { font-weight: 400; margin: 0; }

.attachment-input {
  background: #fafbfe;
  border: 1px dashed #cbd2e1;
  border-radius: 6px;
  display: block;
  font-size: 13px;
  padding: 10px;
  width: 100%;
}

.markdown-source { display: none; }
.markdown-editor { margin-top: 8px; }
.prose img { height: auto; max-width: 100%; }
.prose table { border-collapse: collapse; margin: 12px 0; width: 100%; }
.prose table th,
.prose table td { border: 1px solid #e5e5e5; padding: 6px 8px; }
.prose pre {
  background: #f7f8fa;
  border: 1px solid #e5e5e5;
  overflow-x: auto;
  padding: 10px;
}
.prose code { background: #f4f5f7; padding: 1px 4px; }

.form-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.form-note { color: #888; font-size: 12px; }
.req-note { color: #888; font-size: 12px; margin-top: 10px; }
.form-links { color: #777; font-size: 13px; margin-top: 16px; }
.form-links a,
.form-links .link-button { margin: 0 3px; }
.form-links span { color: #ccc; margin: 0 4px; }

/* Pagination */
.pagination { margin-top: 16px; }
.pagination a,
.pagination span {
  border: 1px solid #ddd;
  color: #1976d2;
  display: inline-block;
  font-size: 13px;
  margin-right: 4px;
  padding: 3px 9px;
  text-decoration: none;
}
.pagination a:hover { background: #f2f8ff; }
.pagination .current {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

/* Empty / alerts */
.empty {
  color: #888;
  padding: 32px 12px;
  text-align: center;
}
.alert {
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 14px;
  padding: 10px 13px;
}
.alert-success { background: #f1f8f0; border-color: #d7e9d2; color: #2f6428; }
.alert-info { background: #eef3fa; border-color: #d5e1f0; color: #244a80; }
.alert-danger,
.alert-error { background: #fdf0f0; border-color: #f0d4d6; color: #8f2028; }

.error-page { padding: 40px 0; text-align: center; }
.error-page h1 { color: #222; font-size: 22px; margin: 0 0 10px; }
.error-page p { color: #777; }

/* Two-factor */
.qr-image { display: block; height: auto; margin: 0 auto; max-width: 190px; }
.backup-code-list {
  background: #fafafa;
  border: 1px solid var(--border);
  display: grid;
  gap: 6px 20px;
  grid-template-columns: 1fr 1fr;
  list-style: none;
  margin: 14px 0;
  padding: 12px 18px;
}

/* Policy page */
.policy {
  margin-left: auto;
  margin-right: auto;
  max-width: 980px;
  padding: 22px 28px;
}
.policy .page-title {
  font-size: 20px;
  margin-bottom: 4px;
}
.policy p {
  color: #3a4050;
  line-height: 1.8;
  margin: 7px 0;
}
.policy h2 {
  border-left: 3px solid var(--red);
  color: var(--navy);
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 8px;
  padding-left: 9px;
}
.policy h2:first-of-type { margin-top: 18px; }
.policy h3 {
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
  margin: 16px 0 5px;
}
.policy h4 {
  color: var(--navy);
  font-size: 13px;
  font-weight: 600;
  margin: 12px 0 3px;
}
.policy ul {
  margin: 7px 0 12px 20px;
  padding: 0;
}
.policy li {
  color: #3a4050;
  line-height: 1.8;
  margin: 4px 0;
}
.policy code {
  background: #f3f5fa;
  border-radius: 3px;
  color: var(--navy);
  padding: 1px 5px;
}
.policy .sev {
  vertical-align: 2px;
}
.policy-note {
  background: #f6f7fc;
  border-left: 3px solid var(--navy);
  color: var(--muted) !important;
  margin-top: 16px !important;
  padding: 9px 12px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  padding: 22px 0;
  text-align: center;
}
.site-footer p { margin: 2px 0; }

@media (max-width: 900px) {
  .header-inner { flex-wrap: wrap; gap: 0 18px; padding: 8px 12px 8px 0; }
  .table-wide { min-width: 640px; }
  .main-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }
  .main-nav a { padding: 9px 0 8px; }
  .account { margin-left: auto; }
  .main { padding-top: 18px; }
  .home-grid { grid-template-columns: 1fr; }
  .home-aside { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  body { overflow-x: hidden; }
  .header-inner { gap: 6px 10px; padding: 8px 12px; }
  .brand { flex-shrink: 1; min-width: 0; }
  .brand-name { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .brand-logo { height: 38px; width: 38px; }
  .brand-sub { display: none; }
  .main-nav { gap: 18px; }
  .main-nav a { font-size: 13px; }
  .account { flex-shrink: 0; gap: 6px; padding-right: 0; }
  .account .btn { font-size: 12px; padding: 5px 8px; }
  .account-points { display: none; }
  .main { padding: 18px 12px 40px; }
  .home-aside { display: flex; }
  .panel { padding: 15px 16px; }
  .form-box { padding: 18px; }
  .policy { padding: 18px; }
  .policy h2 { font-size: 16px; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .table-wide { min-width: 0; }
  .table th,
  .table td { padding: 7px 6px; font-size: 12px; }
  .col-time { width: 90px; }
  .col-id { width: 48px; }
  .col-sev { width: 60px; }
  .col-status { width: 76px; }
  .col-submitter { width: 80px; }
  .detail-table th { width: 110px; }
  .backup-code-list { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .header-inner { gap: 4px 8px; padding: 8px 10px; }
  .brand { gap: 7px; }
  .brand-name { font-size: 14px; max-width: 170px; }
  .brand-logo { height: 34px; width: 34px; }
  .account { gap: 4px; }
  .account .btn { font-size: 11px; padding: 4px 6px; }
  .main-nav { gap: 14px; }
  .main-nav a { font-size: 12px; }
}