:root {
  --s28-bg: #f4f8fb;
  --s28-surface: #ffffff;
  --s28-border: #dce3ec;
  --s28-text: #1f2937;
  --s28-muted: #667085;
  --s28-primary: #206bc4;
  --s28-primary-soft: #e8f2ff;
  --s28-teal: #0ca678;
  --s28-amber: #f59f00;
  --s28-rose: #d6336c;
  --s28-row-alt: #f6f9fd;
  --s28-hero-start: rgba(232, 242, 255, 0.95);
  --s28-hero-end: rgba(231, 247, 241, 0.96);
  --s28-shadow: 0 18px 42px rgba(30, 41, 59, 0.09);
  --s28-shadow-soft: 0 10px 26px rgba(30, 41, 59, 0.07);
  --s28-focus: rgba(32, 107, 196, 0.22);
}

body.theme-s28-silver {
  --s28-bg: #f3f6f8;
  --s28-surface: #ffffff;
  --s28-border: #d8dee8;
  --s28-text: #1e293b;
  --s28-muted: #64748b;
  --s28-primary: #475569;
  --s28-primary-soft: #eef2f6;
  --s28-teal: #0f766e;
  --s28-amber: #c27a15;
  --s28-rose: #be3455;
  --s28-row-alt: #f8fafc;
  --s28-hero-start: rgba(248, 250, 252, 0.98);
  --s28-hero-end: rgba(238, 244, 246, 0.98);
  --s28-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
  --s28-shadow-soft: 0 8px 22px rgba(15, 23, 42, 0.06);
  --s28-focus: rgba(71, 85, 105, 0.22);
}

body.theme-s28-warm {
  --s28-bg: #fff8ed;
  --s28-surface: #ffffff;
  --s28-border: #eadfce;
  --s28-text: #263248;
  --s28-muted: #756b5f;
  --s28-primary: #2563eb;
  --s28-primary-soft: #edf4ff;
  --s28-teal: #0f8b78;
  --s28-amber: #f59e0b;
  --s28-rose: #d14d72;
  --s28-row-alt: #fffaf2;
  --s28-hero-start: rgba(255, 250, 242, 0.98);
  --s28-hero-end: rgba(238, 245, 255, 0.96);
  --s28-shadow: 0 18px 42px rgba(127, 93, 45, 0.12);
  --s28-shadow-soft: 0 8px 22px rgba(127, 93, 45, 0.08);
  --s28-focus: rgba(37, 99, 235, 0.2);
}

html[data-login-theme="blue"] body:is(.s28-login-body, .s28-resource-body) {
  --s28-bg: #f4f8fb;
  --s28-surface: #ffffff;
  --s28-border: #dce3ec;
  --s28-text: #1f2937;
  --s28-muted: #667085;
  --s28-primary: #206bc4;
  --s28-primary-soft: #e8f2ff;
  --s28-teal: #0ca678;
  --s28-row-alt: #f6f9fd;
  --s28-shadow: 0 18px 42px rgba(30, 41, 59, 0.09);
  --s28-focus: rgba(32, 107, 196, 0.22);
}

html[data-login-theme="warm"] body:is(.s28-login-body, .s28-resource-body) {
  --s28-bg: #fff8ed;
  --s28-surface: #ffffff;
  --s28-border: #eadfce;
  --s28-text: #263248;
  --s28-muted: #756b5f;
  --s28-primary: #2563eb;
  --s28-primary-soft: #edf4ff;
  --s28-teal: #0f8b78;
  --s28-row-alt: #fffaf2;
  --s28-shadow: 0 18px 42px rgba(127, 93, 45, 0.12);
  --s28-focus: rgba(37, 99, 235, 0.2);
}

* {
  box-sizing: border-box;
}

body.theme-campus {
  min-height: 100vh;
  margin: 0;
  background: var(--s28-bg);
  color: var(--s28-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

.theme-campus a {
  text-decoration: none;
}

html[data-login-theme="silver"] body:is(.s28-login-body, .s28-resource-body) {
  --s28-bg: #f3f6f8;
  --s28-surface: #ffffff;
  --s28-border: #d8dee8;
  --s28-text: #1e293b;
  --s28-muted: #64748b;
  --s28-primary: #475569;
  --s28-primary-soft: #eef2f6;
  --s28-teal: #0f766e;
  --s28-amber: #c27a15;
  --s28-rose: #be3455;
  --s28-row-alt: #f8fafc;
  --s28-hero-start: rgba(248, 250, 252, 0.98);
  --s28-hero-end: rgba(238, 244, 246, 0.98);
  --s28-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
  --s28-shadow-soft: 0 8px 22px rgba(15, 23, 42, 0.06);
  --s28-focus: rgba(71, 85, 105, 0.22);
}

.s28-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--s28-border) 82%, transparent);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--s28-shadow-soft);
  color: var(--s28-muted);
  font-size: 13px;
  line-height: 1.6;
}

.s28-footer-left,
.s28-footer-right {
  min-width: 0;
}

.s28-footer-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
  text-align: right;
}

.s28-footer-ip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid var(--s28-border);
  border-radius: 6px;
  background: var(--s28-primary-soft);
  color: var(--s28-primary);
  font-weight: 700;
}

.s28-login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 24px 28px;
}

.s28-login-shell {
  display: grid;
  gap: 14px;
  width: min(900px, 100%);
}

.s28-login-card {
  display: grid;
  grid-template-columns: minmax(280px, .82fr) minmax(0, 1.48fr);
  min-height: 500px;
  overflow: hidden;
  border: 1px solid var(--s28-border);
  border-radius: 12px;
  background: var(--s28-surface);
  box-shadow: var(--s28-shadow);
}

.s28-login-context {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 40px 36px;
  border-inline-end: 1px solid var(--s28-border);
  background: color-mix(in srgb, var(--s28-primary-soft) 72%, var(--s28-surface));
}

.s28-login-context-heading {
  text-align: center;
}

.s28-login-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin-bottom: 17px;
  border: 1px solid color-mix(in srgb, var(--s28-primary) 24%, var(--s28-border));
  border-radius: 50%;
  color: var(--s28-primary);
  background: color-mix(in srgb, var(--s28-primary) 6%, var(--s28-surface));
}

.s28-login-hero i {
  font-size: 36px;
}

.s28-login-context-heading h1 {
  margin: 0;
  color: var(--s28-text);
  font-size: 30px;
  font-weight: 720;
  line-height: 1.25;
  letter-spacing: -.025em;
}

.s28-login-context-heading p {
  margin: 9px 0 0;
  color: var(--s28-muted);
  font-size: 15px;
  line-height: 1.55;
}

.s28-login-trust-list {
  display: grid;
  gap: 18px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.s28-login-trust-list li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.s28-login-trust-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: var(--s28-primary);
  background: color-mix(in srgb, var(--s28-primary) 8%, var(--s28-surface));
}

.s28-login-trust-icon i {
  font-size: 19px;
}

.s28-login-trust-list li > span:last-child {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.s28-login-trust-list strong {
  color: var(--s28-text);
  font-size: 15px;
  font-weight: 680;
  line-height: 1.4;
}

.s28-login-trust-list small {
  color: var(--s28-muted);
  font-size: 13px;
  line-height: 1.45;
}

.s28-login-auth {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 38px 48px;
}

.s28-login-method-title {
  margin: 3px 0 27px;
  padding-bottom: 13px;
  border-bottom: 3px solid var(--s28-primary);
  color: var(--s28-primary);
  font-size: 18px;
  font-weight: 720;
  line-height: 1.3;
  text-align: center;
}

.s28-login-tabs {
  display: flex;
  align-items: stretch;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--s28-border);
}

.s28-login-tab {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  margin-bottom: -2px;
  padding: 12px 6px;
  border-bottom: 3px solid transparent;
  color: var(--s28-muted);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
}

.s28-login-tab:hover,
.s28-login-tab[aria-selected="true"] {
  color: var(--s28-primary);
}

.s28-login-tab[aria-selected="true"] {
  border-bottom-color: var(--s28-primary);
  font-weight: 750;
}

.s28-login-panel[hidden] {
  display: none;
}

.s28-login-panel {
  min-width: 0;
}

.s28-login-tab:focus-visible,
.s28-login-method-row:focus-visible {
  outline: 3px solid var(--s28-focus);
  outline-offset: 3px;
}

.s28-login-method-list {
  overflow: hidden;
  border: 1px solid var(--s28-border);
  border-radius: 12px;
}

.s28-login-method-list h2 {
  margin: 0 20px;
  padding: 20px 0;
  border-bottom: 2px solid var(--s28-border);
  color: var(--s28-text);
  font-size: 23px;
  font-weight: 720;
  text-align: center;
}

.s28-login-method-row {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 98px;
  padding: 18px 20px;
  color: var(--s28-text);
  font-size: 19px;
  font-weight: 680;
  line-height: 1.4;
  text-decoration: none;
}

.s28-login-method-row + .s28-login-method-row {
  border-top: 1px solid var(--s28-border);
}

.s28-login-method-row:hover {
  color: var(--s28-primary);
  background: var(--s28-primary-soft);
}

.s28-login-method-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  border-radius: 12px;
  background: var(--s28-primary-soft);
  color: var(--s28-primary);
  font-size: 32px;
}

.s28-login-method-wechat .s28-login-method-icon,
.s28-login-method-icon.s28-login-method-wechat {
  color: #129655;
  background: #e6f5ed;
}

.s28-login-method-row > .ti-chevron-right {
  margin-inline-start: auto;
  color: var(--s28-muted);
  font-size: 25px;
}

.s28-login-external {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 12px 0;
  text-align: center;
}

.s28-login-external h2 {
  margin: 0;
  color: var(--s28-text);
  font-size: 22px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.s28-login-external p {
  margin: 0 0 8px;
  color: var(--s28-muted);
  font-size: 14px;
  line-height: 1.6;
}

.s28-login-panel ~ .s28-login-notice {
  margin: 20px 0 0;
}

.s28-login-submit:disabled {
  opacity: .55;
  cursor: not-allowed;
}

.s28-login-form {
  display: grid;
  gap: 18px;
}

.s28-login-field {
  display: grid;
  gap: 7px;
}

.s28-login-field-compact {
  margin-bottom: -5px;
}

.s28-login-field label {
  color: var(--s28-text);
  font-size: 14px;
  font-weight: 680;
  line-height: 1.4;
}

.s28-login-input-wrap {
  position: relative;
}

.s28-login-input-wrap > i {
  position: absolute;
  top: 50%;
  inset-inline-start: 14px;
  color: var(--s28-muted);
  font-size: 19px;
  pointer-events: none;
  transform: translateY(-50%);
}

.s28-login-input-wrap input {
  width: 100%;
  min-height: 48px;
  padding: 10px 14px;
  padding-inline-start: 43px;
  border: 1px solid color-mix(in srgb, var(--s28-muted) 50%, var(--s28-border));
  border-radius: 8px;
  outline: 0;
  color: var(--s28-text);
  background: var(--s28-surface);
  font-size: 16px;
  line-height: 1.35;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.s28-login-input-wrap input:focus {
  border-color: var(--s28-primary);
  box-shadow: 0 0 0 3px var(--s28-focus);
}

.s28-login-field > p {
  margin: 0;
  color: var(--s28-muted);
  font-size: 12.5px;
  line-height: 1.5;
}

.s28-login-submit,
.s28-login-wx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease, transform 100ms ease;
}

.s28-login-submit {
  border: 1px solid var(--s28-primary);
  background: var(--s28-primary);
  color: #fff;
  box-shadow: 0 9px 18px var(--s28-focus);
}

.s28-login-submit:hover {
  border-color: color-mix(in srgb, var(--s28-primary) 86%, #000);
  background: color-mix(in srgb, var(--s28-primary) 88%, #000);
  color: #fff;
}

.s28-login-submit:active,
.s28-login-wx:active {
  transform: translateY(1px);
}

.s28-login-wx {
  border: 1px solid color-mix(in srgb, var(--s28-teal) 58%, var(--s28-border));
  color: var(--s28-teal);
  background: var(--s28-surface);
}

.s28-login-wx:hover {
  border-color: var(--s28-teal);
  color: var(--s28-teal);
  background: color-mix(in srgb, var(--s28-teal) 9%, var(--s28-surface));
}

.s28-login-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 23px 0 17px;
  color: var(--s28-muted);
  font-size: 13px;
  white-space: nowrap;
}

.s28-login-divider::before,
.s28-login-divider::after {
  height: 1px;
  background: var(--s28-border);
  content: "";
  flex: 1;
}

.s28-login-notice,
.s28-login-empty {
  margin-bottom: 18px;
  padding: 11px 13px;
  border: 1px solid color-mix(in srgb, var(--s28-primary) 26%, var(--s28-border));
  border-radius: 8px;
  color: var(--s28-text);
  background: color-mix(in srgb, var(--s28-primary) 5%, var(--s28-surface));
  font-size: 13px;
  line-height: 1.55;
}

.s28-login-notice strong {
  display: block;
  margin-bottom: 3px;
}

.s28-login-notice p {
  margin: 0;
  color: var(--s28-muted);
}

.s28-login-auth .err {
  margin-bottom: 18px;
}

.s28-login-submit:focus-visible,
.s28-login-wx:focus-visible,
.s28-login-theme-choice:focus-visible,
.s28-login-input-wrap input:focus-visible {
  outline: 3px solid var(--s28-focus);
  outline-offset: 2px;
}

.s28-login-theme-switcher {
  display: flex;
  align-items: center;
  align-self: flex-start;
  gap: 4px;
  min-height: 44px;
  max-width: 100%;
  margin-top: 18px;
  padding: 4px;
  border: 1px solid var(--s28-border);
  border-radius: 8px;
  color: var(--s28-muted);
  background: color-mix(in srgb, var(--s28-surface) 94%, transparent);
  box-shadow: var(--s28-shadow-soft);
}

.s28-login-theme-switcher > i {
  margin-inline: 6px 2px;
  font-size: 18px;
}

.s28-login-theme-choice {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 44px;
  padding: 0 8px;
  border: 0;
  border-radius: 6px;
  color: var(--s28-muted);
  background: transparent;
  font-size: 12px;
  font-weight: 650;
  cursor: pointer;
}

.s28-login-theme-choice > span {
  width: 10px;
  height: 10px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 50%;
}

.s28-login-theme-blue > span { background: #206bc4; }
.s28-login-theme-silver > span { background: #475569; }
.s28-login-theme-warm > span { background: #f59e0b; }

.s28-login-theme-choice[aria-pressed="true"] {
  color: var(--s28-text);
  background: var(--s28-primary-soft);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.1);
}

.err {
  margin-bottom: 14px;
  padding: 10px 12px;
  border: 1px solid #fecdd3;
  border-radius: 8px;
  background: #fff1f2;
  color: #b91c1c;
  font-size: 14px;
}

@media (max-width: 980px) {
  .s28-login-card {
    grid-template-columns: minmax(260px, .76fr) minmax(0, 1.24fr);
  }

  .s28-login-context {
    padding-inline: 28px;
  }

  .s28-login-auth {
    padding-inline: 36px;
  }
}

@media (max-width: 680px) {
  .s28-footer { align-items: flex-start; flex-direction: column; }
  .s28-footer-right { justify-content: flex-start; text-align: left; }
  .s28-login-page {
    flex-direction: column;
    justify-content: flex-start;
    min-height: 100dvh;
    padding: 10px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
  }

  .s28-login-shell {
    width: min(540px, 100%);
  }

  .s28-login-card {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
    border-radius: 10px;
    box-shadow: 0 12px 34px color-mix(in srgb, var(--s28-text) 9%, transparent);
  }

  .s28-login-context {
    padding: 14px 14px 12px;
    border-inline-end: 0;
    border-bottom: 1px solid var(--s28-border);
  }

  .s28-login-hero {
    width: 44px;
    height: 44px;
    margin-bottom: 5px;
  }

  .s28-login-hero i {
    font-size: 24px;
  }

  .s28-login-context-heading h1 {
    font-size: 24px;
  }

  .s28-login-context-heading p {
    margin-top: 3px;
    font-size: 12.5px;
  }

  .s28-login-trust-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px 10px;
    margin-top: 8px;
  }

  .s28-login-trust-list li {
    display: block;
  }

  .s28-login-trust-icon,
  .s28-login-trust-list small {
    display: none;
  }

  .s28-login-trust-list strong {
    color: var(--s28-muted);
    font-size: 11.5px;
    font-weight: 620;
  }

  .s28-login-auth {
    padding: 15px 14px 16px;
  }

  .s28-login-method-title {
    margin-top: 0;
    margin-bottom: 12px;
    padding-bottom: 8px;
    font-size: 16px;
  }

  .s28-login-form {
    gap: 10px;
  }

  .s28-login-field {
    gap: 4px;
  }

  .s28-login-field label {
    font-size: 13px;
  }

  .s28-login-input-wrap input,
  .s28-login-submit,
  .s28-login-wx {
    min-height: 44px;
  }

  .s28-login-input-wrap input {
    font-size: 16px;
  }

  .s28-login-field > p {
    font-size: 11px;
  }

  .s28-login-divider {
    margin: 10px 0 8px;
  }

  .s28-login-theme-switcher {
    align-self: flex-start;
    margin-top: 8px;
    overflow-x: auto;
  }
}

@media (max-width: 640px) {
  .s28-login-tabs { margin-bottom: 20px; overflow-x: auto; border-bottom: 0; box-shadow: inset 0 -2px 0 var(--s28-border); }
  .s28-login-tab { flex: 1 0 auto; margin-bottom: 0; padding: 10px 6px; font-size: 13px; min-height: 44px; white-space: nowrap; }
  .s28-login-method-list h2 { padding: 16px 0; font-size: 21px; }
  .s28-login-method-row { gap: 14px; padding: 16px; min-height: 86px; font-size: 17px; }
  .s28-login-method-icon { width: 50px; height: 50px; font-size: 28px; }
  .s28-login-external h2 { font-size: 20px; }
}

@media (max-width: 350px) {
  .s28-login-page {
    padding: 8px;
  }

  .s28-login-context {
    padding: 17px 14px 14px;
  }

  .s28-login-auth {
    padding: 18px 14px 20px;
  }

  .s28-login-trust-list {
    gap: 5px 9px;
  }

  .s28-login-trust-list strong {
    font-size: 10.5px;
  }

  .s28-login-theme-choice {
    padding-inline: 6px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }
}

/* Resource navigation shares the reader login palette and shape scale. */
.s28-resource-body { --s28r-panel-radius: 12px; --s28r-control-radius: 8px; -webkit-font-smoothing: antialiased; }
.s28-resource-body [hidden] { display: none !important; }
.s28-resource-body button, .s28-resource-body input { font: inherit; }
.s28-resource-body button { cursor: pointer; }
.s28-resource-body :where(a, button, input, summary):focus-visible { outline: 3px solid var(--s28-primary); outline-offset: 3px; }
.s28-resource-body button:disabled { cursor: wait; opacity: .6; }
.s28r-page { padding: 26px 0 26px; min-height: 100dvh; }
.s28r-shell { width: min(1240px, calc(100% - 64px)); margin: auto; }
.s28r-skip { position: fixed; left: 16px; top: 12px; z-index: 20; padding: 12px 16px; border-radius: 8px; transform: translateY(-160%); background: var(--s28-primary); color: #fff; }
.s28r-skip:focus { transform: translateY(0); color: #fff; }
.s28r-topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.s28r-brand { display: inline-flex; gap: 12px; align-items: center; flex-shrink: 0; color: var(--s28-text); font-size: 17px; font-weight: 720; line-height: 1.35; }
.s28r-brand:hover { color: var(--s28-primary); }
.s28r-brand-icon { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid color-mix(in srgb, var(--s28-primary) 20%, var(--s28-border)); border-radius: 50%; color: var(--s28-primary); background: color-mix(in srgb, var(--s28-primary) 6%, var(--s28-surface)); font-size: 25px; }
.s28r-brand-caption { display: block; margin-top: 3px; color: var(--s28-muted); font-size: 12px; font-weight: 450; letter-spacing: .06em; }
.s28r-topbar-actions { display: flex; align-items: center; gap: 24px; }
.s28r-theme-switcher { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--s28-border); border-radius: 8px; background: var(--s28-surface); color: var(--s28-muted); }
.s28r-theme-switcher > i { margin: 0 4px 0 6px; font-size: 18px; }
.s28r-theme-switcher button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 34px; padding: 0 10px; border: 0; border-radius: 6px; color: var(--s28-muted); background: transparent; font-size: 12px; font-weight: 650; }
.s28r-theme-switcher button[aria-pressed="true"] { color: var(--s28-text); background: var(--s28-primary-soft); box-shadow: 0 1px 4px rgb(15 23 42 / 8%); }
.s28r-swatch { width: 10px; height: 10px; border-radius: 50%; border: 1px solid rgb(15 23 42 / 12%); }
.s28r-swatch.blue { background: #206bc4; } .s28r-swatch.silver { background: #475569; } .s28r-swatch.warm { background: #f59e0b; }
.s28r-account { display: flex; align-items: center; gap: 16px; color: var(--s28-muted); font-size: 13px; }
.s28r-account > span, .s28r-account > a { display: inline-flex; gap: 6px; align-items: center; }
.s28r-account > span > i { font-size: 20px; }
.s28r-account a { color: var(--s28-muted); min-height: 36px; }
.s28r-account a:hover { color: var(--s28-primary); }
.s28r-search-card { display: grid; grid-template-columns: minmax(290px, .92fr) minmax(0, 1.48fr); min-height: 190px; border: 1px solid var(--s28-border); border-radius: var(--s28r-panel-radius); background: var(--s28-surface); box-shadow: var(--s28-shadow); overflow: hidden; }
.s28r-context { display: flex; align-items: center; gap: 18px; padding: 30px 32px; border-inline-end: 1px solid var(--s28-border); background: color-mix(in srgb, var(--s28-primary-soft) 72%, var(--s28-surface)); }
.s28r-context-icon { display: grid; place-items: center; width: 58px; height: 58px; flex-shrink: 0; border: 1px solid color-mix(in srgb, var(--s28-primary) 24%, var(--s28-border)); border-radius: 50%; background: color-mix(in srgb, var(--s28-primary) 6%, var(--s28-surface)); color: var(--s28-primary); font-size: 29px; }
.s28r-context h1 { margin: 0; font-size: 29px; line-height: 1.3; font-weight: 720; letter-spacing: -.025em; }
.s28r-context p { margin: 9px 0 0; color: var(--s28-muted); font-size: 14px; line-height: 1.55; }
.s28r-search-form { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding: 30px 36px; }
.s28r-search-form label { display: block; margin-bottom: 9px; font-size: 14px; font-weight: 680; }
.s28r-search-control { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
.s28r-input-wrap { position: relative; min-width: 0; }
.s28r-input-wrap > i { position: absolute; inset-inline-start: 14px; top: 50%; transform: translateY(-50%); font-size: 20px; color: var(--s28-muted); pointer-events: none; }
.s28r-input-wrap input { width: 100%; min-width: 0; min-height: 48px; padding: 10px 12px; padding-inline-start: 43px; border: 1px solid color-mix(in srgb, var(--s28-muted) 50%, var(--s28-border)); border-radius: var(--s28r-control-radius); color: var(--s28-text); background: var(--s28-surface); outline: 0; font-size: 16px; line-height: 1.4; }
.s28r-input-wrap input::placeholder { color: var(--s28-muted); opacity: 1; }
.s28r-input-wrap input:focus { border-color: var(--s28-primary); box-shadow: 0 0 0 3px var(--s28-focus); }
.s28r-search-form > p { margin: 9px 0 0; color: var(--s28-muted); font-size: 12.5px; line-height: 1.5; }
.s28r-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 17px; border: 1px solid transparent; border-radius: var(--s28r-control-radius, 8px); font-size: 14px; font-weight: 650; white-space: nowrap; line-height: 1.2; transition: background-color 150ms ease, border-color 150ms ease, transform 100ms ease; }
.s28r-button-primary { color: #fff; background: var(--s28-primary); border-color: var(--s28-primary); box-shadow: 0 7px 16px var(--s28-focus); }
.s28r-button-primary:hover { color: #fff; background: color-mix(in srgb, var(--s28-primary) 88%, #000); border-color: color-mix(in srgb, var(--s28-primary) 88%, #000); }
.s28r-button-secondary { color: var(--s28-primary); border-color: color-mix(in srgb, var(--s28-primary) 38%, var(--s28-border)); background: var(--s28-surface); }
.s28r-button-secondary:hover { color: var(--s28-primary); background: var(--s28-primary-soft); border-color: var(--s28-primary); }
.s28r-button:active, .s28r-icon-button:active { transform: translateY(1px); }
.s28r-search-control > .s28r-button { min-width: 94px; }
.s28r-filters { margin-top: 18px; border: 1px solid var(--s28-border); border-radius: var(--s28r-panel-radius); background: var(--s28-surface); }
.s28r-filters summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 58px; padding: 12px 22px; list-style: none; cursor: pointer; }
.s28r-filters summary::-webkit-details-marker { display: none; }
.s28r-section-label { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 680; }
.s28r-section-label > i { font-size: 19px; color: var(--s28-primary); }
.s28r-filter-count { min-width: 20px; padding: 1px 6px; border-radius: 5px; background: var(--s28-primary-soft); color: var(--s28-primary); text-align: center; font-size: 11px; }
.s28r-filter-summary { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--s28-muted); }
.s28r-filter-hint { margin-inline-end: 16px; }
.s28r-close-label { display: none; }
.s28r-filters[open] .s28r-close-label { display: inline; }
.s28r-filters[open] .s28r-open-label { display: none; }
.s28r-filters[open] summary { border-bottom: 1px solid var(--s28-border); }
.s28r-filters[open] .s28r-filter-summary > i { transform: rotate(180deg); }
.s28r-filter-content { padding: 7px 22px; }
.s28r-filter-row { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 14px; padding: 10px 0; }
.s28r-filter-row + .s28r-filter-row { border-top: 1px solid color-mix(in srgb, var(--s28-border) 60%, transparent); }
.s28r-filter-label { padding-top: 8px; font-size: 13px; color: var(--s28-muted); }
.s28r-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.s28r-chip { min-height: 32px; padding: 5px 11px; border: 1px solid transparent; border-radius: 6px; background: transparent; color: var(--s28-muted); font-size: 13px !important; line-height: 1.3; }
.s28r-chip:hover { background: var(--s28-row-alt); color: var(--s28-primary); }
.s28r-chip[aria-pressed="true"] { color: var(--s28-primary); background: var(--s28-primary-soft); border-color: color-mix(in srgb, var(--s28-primary) 20%, var(--s28-border)); font-weight: 650; }
.s28r-filter-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 22px 12px; color: var(--s28-muted); font-size: 12px; }
.s28r-text-button { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 6px 0; border: 0; color: var(--s28-primary); background: transparent; font-size: 13px !important; }
.s28r-results { margin-top: 22px; overflow: hidden; border: 1px solid var(--s28-border); border-radius: var(--s28r-panel-radius); background: var(--s28-surface); box-shadow: 0 10px 28px color-mix(in srgb, var(--s28-text) 5%, transparent); }
.s28r-results-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 96px; padding: 22px 24px; border-bottom: 1px solid var(--s28-border); }
.s28r-results-header h2 { display: flex; align-items: center; gap: 10px; margin: 0; font-size: 18px; font-weight: 720; line-height: 1.3; }
.s28r-results-header h2 > span { padding: 2px 8px; border: 1px solid var(--s28-border); border-radius: 6px; background: var(--s28-row-alt); color: var(--s28-muted); font-size: 12px; font-weight: 600; }
.s28r-results-header p { margin: 7px 0 0; color: var(--s28-muted); font-size: 12px; }
.s28r-list-switcher { display: flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--s28-border); border-radius: 8px; background: var(--s28-row-alt); }
.s28r-list-switcher > button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 34px; padding: 6px 11px; border: 0; border-radius: 6px; background: transparent; color: var(--s28-muted); font-size: 12px; white-space: nowrap; }
.s28r-list-switcher > button[aria-pressed="true"] { color: var(--s28-text); background: var(--s28-surface); box-shadow: 0 1px 5px rgb(15 23 42 / 9%); font-weight: 650; }
#favorite-count { padding-inline-start: 3px; font-size: 11px; }
.s28r-resource-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.s28r-resource { position: relative; display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; align-items: center; gap: 12px; min-height: 64px; padding: 12px 24px; border-bottom: 1px solid color-mix(in srgb, var(--s28-border) 72%, transparent); transition: background-color 140ms ease; }
.s28r-resource:nth-child(2n + 1) { border-inline-end: 1px solid var(--s28-border); }
.s28r-resource:last-child, .s28r-resource:nth-last-child(2):nth-child(odd) { border-bottom: 0; }
.s28r-resource:hover, .s28r-resource:focus-within { background: color-mix(in srgb, var(--s28-primary-soft) 32%, var(--s28-surface)); }
.s28r-index { color: var(--s28-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.s28r-resource-copy { min-width: 0; }
.s28r-resource-name { display: block; width: 100%; max-width: 100%; padding: 0; border: 0; background: transparent; color: var(--s28-text); text-align: start; font-size: 15px !important; font-weight: 650 !important; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; line-height: 1.5; }
.s28r-resource-name:hover { color: var(--s28-primary); }
.s28r-resource-actions { display: flex; align-items: center; gap: 8px; }
.s28r-visit { min-height: 34px; padding: 7px 10px; gap: 5px; border-color: color-mix(in srgb, var(--s28-primary) 22%, var(--s28-border)); font-size: 12px !important; font-weight: 550 !important; box-shadow: none; }
.s28r-visit > i { font-size: 15px; }
.s28r-icon-button { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; flex-shrink: 0; padding: 0; border: 1px solid transparent; border-radius: 8px; color: var(--s28-muted); background: transparent; font-size: 19px !important; }
.s28r-icon-button:hover { color: var(--s28-primary); background: var(--s28-primary-soft); border-color: color-mix(in srgb, var(--s28-primary) 16%, var(--s28-border)); }
.s28r-favorite[aria-pressed="true"] { color: var(--s28-primary); background: var(--s28-primary-soft); }
.s28r-results-footer { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 24px; border-top: 1px solid var(--s28-border); color: var(--s28-muted); background: color-mix(in srgb, var(--s28-row-alt) 55%, var(--s28-surface)); font-size: 11.5px; }
.s28r-results-footer > span:last-child { display: inline-flex; gap: 6px; align-items: center; }
.s28r-empty { padding: 42px 24px; text-align: center; }
.s28r-empty-icon { display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 14px; background: var(--s28-primary-soft); border-radius: 50%; color: var(--s28-primary); font-size: 25px; }
.s28r-empty h3 { margin: 0; font-size: 18px; }
.s28r-empty p { color: var(--s28-muted); margin: 10px 0 20px; font-size: 14px; }

@media (max-width: 1080px) {
  .s28r-topbar-actions { gap: 16px; }
  .s28r-context { padding: 26px 24px; gap: 14px; }
  .s28r-context-icon { width: 48px; height: 48px; font-size: 25px; }
  .s28r-context h1 { font-size: 25px; }
  .s28r-context p { font-size: 13px; }
  .s28r-search-form { padding: 26px 24px; }
  .s28r-resource { padding: 12px 18px; grid-template-columns: 24px minmax(0, 1fr) auto; gap: 9px; }
  .s28r-resource-actions { gap: 5px; }
}
@media (max-width: 800px) {
  .s28r-topbar { flex-wrap: wrap; gap: 16px; }
  .s28r-topbar-actions { width: 100%; justify-content: space-between; }
  .s28r-search-card { grid-template-columns: minmax(0, 1fr); }
  .s28r-context { padding: 22px 24px; border-inline-end: 0; border-bottom: 1px solid var(--s28-border); }
  .s28r-context h1 { font-size: 26px; }
  .s28r-context p { margin-top: 4px; }
  .s28r-search-form { padding: 22px 24px; }
  .s28r-resource-grid { grid-template-columns: minmax(0, 1fr); }
  .s28r-resource:nth-child(n) { border-inline-end: 0; border-bottom: 1px solid color-mix(in srgb, var(--s28-border) 72%, transparent); }
  .s28r-resource:last-child { border-bottom: 0; }
  .s28r-resource { padding: 12px 24px; gap: 12px; }
  .s28r-resource-name { white-space: normal; overflow-wrap: anywhere; }
}
@media (max-width: 540px) {
  .s28r-page { padding-top: 18px; padding-bottom: max(18px, env(safe-area-inset-bottom)); }
  .s28r-shell { width: calc(100% - 24px); }
  .s28r-topbar { gap: 16px; margin: 0 4px 20px; }
  .s28r-brand { font-size: 16px; }
  .s28r-brand-icon { width: 38px; height: 38px; font-size: 22px; }
  .s28r-brand-caption { font-size: 11px; }
  .s28r-topbar-actions { gap: 10px; flex-wrap: wrap; }
  .s28r-account { position: absolute; right: 16px; top: 65px; gap: 11px; font-size: 12px; }
  .s28r-account > span { gap: 4px; }
  .s28r-account > span > i { font-size: 17px; }
  .s28r-account > a { min-height: 44px; min-width: 32px; justify-content: center; }
  .s28r-account > a > span { display: none; }
  .s28r-account > a > i { font-size: 18px; }
  .s28r-theme-switcher { width: 100%; justify-content: space-between; gap: 4px; }
  .s28r-theme-switcher > i { margin: 0 8px; }
  .s28r-theme-switcher button { flex: 1; min-height: 44px; }
  .s28r-context { padding: 23px 20px; gap: 14px; }
  .s28r-context h1 { font-size: 25px; }
  .s28r-context-icon { width: 48px; height: 48px; }
  .s28r-search-form { padding: 20px; }
  .s28r-search-form label { font-size: 13px; }
  .s28r-search-form > p { font-size: 11.5px; }
  .s28r-search-control { gap: 8px; }
  .s28r-input-wrap input { padding-inline-start: 37px; font-size: 16px; }
  .s28r-input-wrap > i { inset-inline-start: 11px; font-size: 18px; }
  .s28r-search-control > .s28r-button { min-width: 65px; padding-inline: 12px; }
  .s28r-search-control > .s28r-button > i { display: none; }
  .s28r-filters { margin-top: 14px; }
  .s28r-filters summary { padding: 12px 18px; min-height: 56px; }
  .s28r-filter-hint { display: none; }
  .s28r-filter-content { padding: 0 16px; }
  .s28r-filter-row { grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 12px 0; }
  .s28r-filter-label { padding-top: 0; font-weight: 600; }
  .s28r-chip { min-width: 38px; min-height: 44px; padding: 7px 10px; }
  .s28r-filter-footer { padding: 8px 16px 12px; }
  .s28r-filter-footer > span { font-size: 11px; }
  .s28r-text-button { min-height: 44px; }
  .s28r-results { margin-top: 18px; }
  .s28r-results-header { align-items: flex-start; flex-direction: column; gap: 17px; padding: 20px 18px 17px; }
  .s28r-results-header h2 { font-size: 18px; }
  .s28r-list-switcher { width: 100%; }
  .s28r-list-switcher > button { min-height: 44px; flex: 1; font-size: 13px; }
  .s28r-resource { grid-template-columns: 20px minmax(0, 1fr) auto; gap: 8px; min-height: 68px; padding: 11px 14px; }
  .s28r-index { align-self: center; padding-top: 0; }
  .s28r-resource-name { font-size: 15px !important; }
  .s28r-resource-actions { justify-content: flex-end; gap: 4px; margin-top: 0; }
  .s28r-visit { min-height: 44px; padding: 10px 9px; font-size: 13px !important; }
  .s28r-icon-button { width: 44px; height: 44px; }
  .s28r-results-footer { padding: 14px 18px; flex-wrap: wrap; gap: 6px; }
  .s28r-results-footer > span:last-child { font-size: 11px; }
}
@media (max-width: 350px) {
  .s28r-brand { font-size: 15px; gap: 8px; }
  .s28r-account > span { font-size: 11px; }
  .s28r-account { gap: 5px; }
  .s28r-context, .s28r-search-form { padding-inline: 16px; }
  .s28r-context h1 { font-size: 22px; }
  .s28r-context p { font-size: 12px; }
}

.s28r-brand { flex-shrink: 1; min-width: 0; }
.s28r-brand-text { min-width: 0; overflow-wrap: anywhere; }
.s28r-brand-icon { flex-shrink: 0; }
.s28r-topbar-actions { flex-shrink: 0; }
.s28r-account { min-width: 0; }
.s28r-account > span { min-width: 0; }
.s28r-account bdi { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s28r-error { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; padding: 12px 24px; border-bottom: 1px solid var(--s28-border); color: #b91c1c; background: #fff1f2; font-size: 14px; }
.s28r-pagination { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 16px; padding: 16px; border-top: 1px solid var(--s28-border); color: var(--s28-muted); font-size: 13px; }
.s28r-pagination [aria-disabled="true"] { opacity: .45; cursor: default; }
.s28r-resource-grid[aria-busy="true"] { opacity: .55; }
.s28-resource-body .s28-footer { margin: 22px 4px 0; padding: 0; border: 0; background: transparent; box-shadow: none; font-size: 11.5px; overflow-wrap: anywhere; }
.s28-resource-body .s28-footer-ip { padding: 0; border: 0; background: transparent; color: var(--s28-muted); font-weight: 400; }
.s28r-detail { border: 1px solid var(--s28-border); border-radius: 12px; background: var(--s28-surface); overflow: hidden; box-shadow: var(--s28-shadow); }
.s28r-detail-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 28px; border-bottom: 1px solid var(--s28-border); background: var(--s28-row-alt); }
.s28r-detail-top > span { display: flex; align-items: center; gap: 8px; color: var(--s28-muted); font-size: 13px; }
.s28r-detail-content { padding: 32px; }
.s28r-detail-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.s28r-detail-heading h1 { margin: 0; min-width: 0; font-size: 30px; line-height: 1.4; overflow-wrap: anywhere; }
.s28r-detail-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.s28r-detail-actions .s28r-icon-button { width: 44px; height: 44px; }
.s28r-detail-meta { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0 0 32px; border: 1px solid var(--s28-border); border-radius: 8px; background: var(--s28-row-alt); }
.s28r-detail-meta > div { padding: 18px 20px; }
.s28r-detail-meta dt { color: var(--s28-muted); font-size: 12px; font-weight: 400; margin-bottom: 8px; }
.s28r-detail-meta dd { margin: 0; font-size: 14px; font-weight: 600; overflow-wrap: anywhere; }
.s28r-detail-section h2 { margin: 0 0 14px; font-size: 18px; }
.s28r-detail-copy { color: var(--s28-text); line-height: 1.85; overflow-wrap: anywhere; overflow-x: auto; }
.s28r-detail-copy img, .s28r-detail-copy iframe, .s28r-detail-copy video { max-width: 100%; }
.s28r-detail-copy img { height: auto; }
.s28r-detail-copy > :last-child { margin-bottom: 0; }
.s28r-detail-notes { margin-top: 28px; border-top: 1px solid var(--s28-border); }
.s28r-detail-notes summary { display: flex; align-items: center; justify-content: space-between; min-height: 56px; list-style: none; cursor: pointer; font-size: 15px; font-weight: 650; }
.s28r-detail-notes summary::-webkit-details-marker { display: none; }
.s28r-detail-notes[open] summary > i { transform: rotate(180deg); }
.s28r-detail-notes .s28r-detail-copy { white-space: pre-wrap; }
.s28r-toast { position: fixed; z-index: 30; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); transform: translateX(-50%); max-width: calc(100vw - 32px); width: max-content; padding: 13px 18px; border: 1px solid var(--s28-border); border-radius: 8px; color: var(--s28-text); background: var(--s28-surface); box-shadow: 0 12px 38px rgb(15 23 42 / 16%); font-size: 13px; }
.s28r-noscript { margin: 20px; text-align: center; }
@media (max-width: 800px) {
  .s28r-detail-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .s28r-detail-heading { flex-direction: column; align-items: flex-start; gap: 18px; }
  .s28-resource-body .s28-footer { flex-direction: column; align-items: flex-start; gap: 6px; }
  .s28-resource-body .s28-footer-right { justify-content: flex-start; text-align: start; }
}
@media (max-width: 540px) {
  .s28r-topbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px 10px; }
  .s28r-topbar-actions { display: contents; }
  .s28r-theme-switcher { grid-row: 2; grid-column: 1 / -1; }
  .s28r-account { position: static; grid-row: 1; grid-column: 2; }
  .s28r-account bdi { max-width: 80px; }
  .s28r-account > span > i { display: none; }
  .s28r-detail-top { padding: 10px 18px; flex-wrap: wrap; gap: 8px; }
  .s28r-detail-top > span { display: none; }
  .s28r-detail-content { padding: 24px 20px; }
  .s28r-detail-heading h1 { font-size: 25px; }
  .s28r-detail-meta > div { padding: 14px 12px; }
  .s28r-error { padding: 12px 18px; }
}