:root {
  color-scheme: light;
  --bg: #ffffff;
  --panel: #ffffff;
  --line: #dddddd;
  --line-soft: #ebebeb;
  --surface-soft: #f7f7f7;
  --surface-strong: #f2f2f2;
  --text: #222222;
  --muted: #6a6a6a;
  --primary: #ff385c;
  --primary-hover: #e00b41;
  --success-bg: #eefbf3;
  --success-text: #1f7a4d;
  --error-bg: #fff1f3;
  --error-text: #c81e4f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    "Airbnb Cereal VF",
    Circular,
    -apple-system,
    BlinkMacSystemFont,
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    "Helvetica Neue",
    sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 56, 92, 0.07) 0%, rgba(255, 255, 255, 0) 28%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfb 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.brand-mark {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  object-fit: contain;
  line-height: 1;
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  display: inline-flex;
  height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  transition:
    border-color 160ms ease,
    color 160ms ease,
    background-color 160ms ease;
}

.nav-link:hover {
  border-color: var(--line);
  color: var(--text);
}

.nav-link-accent {
  border-color: var(--line);
  color: var(--text);
}

.nav-link-accent:hover {
  border-color: rgba(255, 56, 92, 0.28);
  color: var(--primary);
}

.welcome {
  color: var(--muted);
  font-size: 14px;
}

.content {
  width: min(100%, 1200px);
  margin: 0 auto;
  padding: 40px 20px 72px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(232, 232, 232, 0.95);
  border-radius: 32px;
  box-shadow:
    0 16px 32px rgba(15, 23, 42, 0.06),
    0 28px 60px rgba(15, 23, 42, 0.04);
}

.auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 460px);
  gap: 24px;
  align-items: stretch;
}

.auth-layout-single {
  grid-template-columns: minmax(0, 520px);
  justify-content: center;
}

.hero-panel {
  display: flex;
  min-height: 560px;
  flex-direction: column;
  justify-content: center;
  padding: 44px;
  background:
    radial-gradient(circle at top left, rgba(255, 56, 92, 0.12) 0%, rgba(255, 255, 255, 0) 32%),
    linear-gradient(180deg, rgba(252, 252, 252, 0.98) 0%, rgba(255, 255, 255, 1) 100%);
}

.hero-panel h1 {
  margin: 0;
  max-width: 10ch;
  font-size: 48px;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-copy {
  max-width: 560px;
  margin-top: 16px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.auth-card {
  padding: 32px;
  align-self: center;
}

.auth-card-wide {
  max-width: 520px;
  margin: 0 auto;
}

.dashboard-card {
  padding: 36px;
}

.card-header h1,
.card-header h2,
.dashboard-card h1 {
  margin: 0;
  font-size: 32px;
  line-height: 1.2;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subtle {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.form {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.form label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
}

.form input {
  width: 100%;
  height: 52px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  font-size: 15px;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.form input[type="file"] {
  height: auto;
  padding: 14px;
}

.field-help {
  margin-top: -2px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.form input:focus {
  outline: 0;
  box-shadow: 0 0 0 4px rgba(255, 56, 92, 0.1);
  border-color: var(--primary);
}

.primary-button,
.ghost-button {
  height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 0;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

.primary-button {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 32px rgba(255, 56, 92, 0.18);
}

.primary-button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.research-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  background: #2563eb;
  color: #fff;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.18);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

.research-button:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

.ghost-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}

.ghost-button:hover {
  border-color: rgba(255, 56, 92, 0.28);
  color: var(--primary);
}

.footer-text {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-text a {
  color: var(--text);
  font-weight: 600;
}

.footer-text a:hover {
  color: var(--primary);
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.primary-link {
  display: inline-flex;
  height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 12px 32px rgba(255, 56, 92, 0.18);
}

.primary-link:hover {
  background: var(--primary-hover);
}

.secondary-link {
  display: inline-flex;
  height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
}

.secondary-link:hover {
  border-color: rgba(255, 56, 92, 0.28);
  color: var(--primary);
}

.upgrade-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 24px;
  padding: 18px 20px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(239, 246, 255, 0.94), rgba(255, 255, 255, 0.96));
}

.upgrade-callout p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.offer-modal[hidden] {
  display: none;
}

.offer-modal {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(20, 20, 20, 0.3);
  backdrop-filter: blur(7px);
}

.offer-modal__panel {
  position: relative;
  width: min(100%, 460px);
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.84);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.2);
  animation: offer-modal-enter 180ms ease-out;
}

.offer-modal__close {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: var(--surface-soft);
  color: var(--muted);
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.offer-modal__close:hover {
  background: var(--surface-strong);
  color: var(--text);
}

.offer-modal__panel h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
}

.offer-modal__lead,
.offer-modal__note {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.offer-modal__lead {
  margin: 14px 0 0;
}

.offer-price {
  display: grid;
  gap: 5px;
  margin-top: 22px;
  padding: 18px;
  border-radius: 20px;
  background: #eff6ff;
}

.offer-price__label {
  color: #2563eb;
  font-size: 12px;
  font-weight: 700;
}

.offer-price strong {
  color: #1d4ed8;
  font-size: 34px;
  line-height: 1;
}

.offer-price strong span {
  font-size: 14px;
  font-weight: 600;
}

.offer-price del {
  color: var(--muted);
  font-size: 13px;
}

.offer-modal__note {
  margin: 16px 0 0;
}

.offer-modal__action {
  width: 100%;
  margin-top: 20px;
}

@keyframes offer-modal-enter {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.subscribe-shell {
  grid-template-columns: minmax(0, 820px);
}

.subscribe-card {
  padding: 34px;
}

.subscribe-card__header,
.subscribe-footer-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.subscribe-card__header h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
}

.subscribe-offer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 28px;
  padding: 22px 24px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 24px;
  background: linear-gradient(135deg, #eff6ff, #f8fbff 60%, #ffffff);
}

.subscribe-offer__eyebrow {
  display: block;
  color: #2563eb;
  font-size: 12px;
  font-weight: 700;
}

.subscribe-offer strong {
  display: block;
  margin-top: 5px;
  color: #1d4ed8;
  font-size: 40px;
  line-height: 1;
}

.subscribe-offer strong small {
  font-size: 14px;
}

.subscribe-offer del {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.subscribe-offer__trial {
  display: grid;
  gap: 5px;
  max-width: 270px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

.subscribe-offer__trial span {
  color: var(--muted);
  font-size: 13px;
}

.subscribe-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.subscribe-payment,
.subscribe-process {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fcfcfc;
}

.subscribe-section-heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.subscribe-section-heading h2 {
  margin: 0;
  font-size: 18px;
}

.subscribe-section-heading p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.subscribe-step {
  display: inline-flex;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #2563eb;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.payment-qr-wrap {
  display: grid;
  min-height: 250px;
  margin-top: 20px;
  place-items: center;
  border: 1px dashed #cbd5e1;
  border-radius: 20px;
  background: #fff;
}

.payment-qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.payment-qr-card {
  display: grid;
  min-width: 0;
  margin: 0;
  place-items: center;
  padding: 12px 8px 10px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.payment-qr-card .payment-qr {
  width: min(100%, 190px);
  height: 250px;
  aspect-ratio: auto;
  object-fit: contain;
}

.payment-qr-card figcaption {
  margin-top: 5px;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.payment-qr {
  display: block;
  width: min(100%, 230px);
  aspect-ratio: 1;
  object-fit: contain;
}

.payment-qr-placeholder {
  display: grid;
  gap: 8px;
  padding: 24px;
  color: var(--muted);
  text-align: center;
}

.payment-qr-placeholder strong {
  color: var(--text);
  font-size: 15px;
}

.payment-qr-placeholder span {
  font-size: 12px;
  line-height: 1.5;
}

.payment-hint {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.subscribe-steps {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding-left: 22px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

.institution-contact {
  margin-top: 24px;
  padding: 15px 16px;
  border-radius: 18px;
  background: #fff;
}

.institution-contact p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.subscribe-footer-actions {
  align-items: center;
  justify-content: flex-start;
  margin-top: 24px;
}

.form-grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.verification-shell {
  grid-template-columns: minmax(0, 720px);
}

.verification-card {
  max-width: 720px;
}

.verification-summary {
  margin-top: 24px;
}

.status-panel {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fcfcfc;
}

.status-panel p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.status-dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 999px;
  background: #b0b0b0;
}

.status-approved .status-dot,
.status-approved.status-pill {
  background: #1f7a4d;
}

.status-pending .status-dot,
.status-pending.status-pill {
  background: #f5a623;
}

.status-rejected .status-dot,
.status-rejected.status-pill {
  background: #c81e4f;
}

.card-preview {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.ocr-helper {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fcfcfc;
}

.ocr-helper__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ocr-helper__text {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.ocr-status-badge {
  display: inline-flex;
  height: 28px;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  background: #f2f2f2;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.ocr-status-badge[data-tone="working"] {
  background: rgba(245, 166, 35, 0.14);
  color: #a86800;
}

.ocr-status-badge[data-tone="success"] {
  background: rgba(31, 122, 77, 0.12);
  color: #1f7a4d;
}

.ocr-status-badge[data-tone="error"] {
  background: rgba(200, 30, 79, 0.1);
  color: var(--error-text);
}

.ocr-preview {
  margin-top: 14px;
}

.ocr-preview img {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.card-preview img {
  max-width: 100%;
  max-height: 260px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-soft);
}

.admin-header {
  display: flex;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}

.status-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-tab {
  display: inline-flex;
  height: 36px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.status-tab.active,
.status-tab:hover {
  border-color: rgba(255, 56, 92, 0.28);
  color: var(--primary);
}

.admin-user-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.admin-search-field {
  display: grid;
  flex: 1 1 340px;
  gap: 7px;
}

.admin-filter-field {
  display: grid;
  flex: 0 1 210px;
  gap: 7px;
}

.admin-search-field > span,
.admin-filter-field > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.admin-search-field input,
.admin-filter-field select {
  width: 100%;
  height: 48px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--text);
  font: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.admin-search-field input:focus,
.admin-filter-field select:focus {
  outline: 0;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 56, 92, 0.1);
}

.admin-reset-link {
  display: inline-flex;
  height: 48px;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.admin-list-summary {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
}

.admin-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.admin-pagination .ghost-button,
.pagination-number,
.pagination-current {
  display: inline-flex;
  min-width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  padding: 0 11px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.pagination-number {
  border: 1px solid var(--line);
  color: var(--muted);
}

.pagination-number:hover {
  border-color: rgba(255, 56, 92, 0.28);
  color: var(--primary);
}

.pagination-current {
  background: var(--primary);
  color: #fff;
}

.pagination-ellipsis {
  color: var(--muted);
}

.review-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.review-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fcfcfc;
}

.review-meta,
.review-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.review-main h2 {
  margin: 12px 0;
  font-size: 22px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.review-reason {
  margin: 12px 0 0;
  color: var(--error-text);
  font-size: 14px;
}

.review-image img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.review-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.reject-form {
  display: flex;
  flex: 1;
  min-width: 260px;
  gap: 10px;
}

.reject-form input {
  flex: 1;
  min-width: 180px;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.empty-panel {
  margin-top: 28px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 24px;
  color: var(--muted);
  text-align: center;
}

.flash-list {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.flash {
  padding: 14px 16px;
  border: 1px solid transparent;
  border-radius: 18px;
  font-size: 14px;
}

.flash-success {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: rgba(31, 122, 77, 0.12);
}

.flash-error {
  background: var(--error-bg);
  color: var(--error-text);
  border-color: rgba(200, 30, 79, 0.12);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.info-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fcfcfc;
}

.label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .content {
    padding-top: 24px;
  }

  .hero-panel,
  .auth-card,
  .dashboard-card {
    padding: 24px;
  }

  .form-grid-two,
  .review-item {
    grid-template-columns: 1fr;
  }

  .admin-header,
  .review-actions,
  .reject-form,
  .admin-user-tools {
    flex-direction: column;
    align-items: stretch;
  }

  .admin-list-summary {
    flex-direction: column;
  }

  .hero-panel h1,
  .card-header h1,
  .card-header h2,
  .dashboard-card h1 {
    font-size: 28px;
  }
}

@media (max-width: 1024px) {
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: auto;
  }

  .hero-panel h1 {
    max-width: none;
  }

  .auth-card {
    max-width: none;
  }
}

/* 用户管理表格 */
.admin-card {
  overflow: hidden;
}

.api-key-once {
  margin: 18px 0;
  padding: 14px 16px;
  border: 1px solid #c9d9d1;
  border-radius: 10px;
  background: #f2f8f4;
}

.api-key-once p {
  margin: 5px 0 10px;
  color: #53615c;
  font-size: 13px;
}

.api-key-once code {
  display: block;
  overflow-wrap: anywhere;
  padding: 10px 12px;
  border: 1px solid #d7e4dc;
  border-radius: 7px;
  background: #fff;
  color: #24342c;
  font-size: 13px;
}

.api-access-panel {
  margin: 20px 0 4px;
  border: 1px solid #e5ddd9;
  border-radius: 14px;
  background: #fffaf7;
  overflow: hidden;
}

.api-access-panel__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  padding: 14px 20px;
  cursor: pointer;
  list-style: none;
}

.api-access-panel__summary::-webkit-details-marker {
  display: none;
}

.api-access-panel__summary > span:first-child {
  display: grid;
  gap: 3px;
}

.api-access-panel__summary .eyebrow {
  margin: 0;
}

.api-access-panel__summary strong {
  font-size: 18px;
}

.api-access-panel__toggle {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 160ms ease;
}

.api-access-panel[open] .api-access-panel__toggle {
  transform: rotate(225deg) translate(-2px, -2px);
}

.api-access-panel__summary:focus-visible {
  outline: 3px solid rgba(47, 99, 232, 0.28);
  outline-offset: -3px;
}

.api-access-panel__content {
  padding: 0 20px 20px;
  border-top: 1px solid #eadfd8;
}

.api-access-guide {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 18px 0 0;
}

.api-access-guide h2 {
  margin: 2px 0 6px;
  font-size: 18px;
}

.api-access-guide p:not(.eyebrow) {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.api-access-guide__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.api-access-guide__steps span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid #eadfd8;
  border-radius: 999px;
  background: #fff;
  color: #5e5551;
  font-size: 12px;
  font-weight: 600;
}

.api-access-guide__steps b {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
}

.api-access-guide__example {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 7px 10px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.api-access-guide__example code {
  overflow-wrap: anywhere;
  padding: 7px 9px;
  border: 1px solid #eadfd8;
  border-radius: 7px;
  background: #fff;
  color: #3d3632;
  font-size: 12px;
}

.api-key-issue-form {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
  margin: 14px 0 20px;
}

.api-key-issue-form label {
  display: grid;
  flex: 1 1 260px;
  gap: 6px;
}

.api-key-issue-form label span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.api-key-issue-form input {
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font: inherit;
}

.global-api-key-list {
  margin: 10px 0 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.global-api-key-list__header,
.global-api-key-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
}

.global-api-key-list__header {
  background: #faf7f5;
  color: var(--text);
  font-size: 13px;
}

.global-api-key-list__header span,
.global-api-key-row small {
  color: var(--muted);
  font-size: 12px;
}

.global-api-key-row {
  border-top: 1px solid var(--line-soft);
}

.global-api-key-row > div {
  display: grid;
  gap: 4px;
  min-width: 0;
}

@media (max-width: 640px) {
  .api-key-issue-form .research-button {
    width: 100%;
  }

  .global-api-key-row {
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .api-access-guide {
    padding-top: 16px;
  }

  .api-access-panel__summary {
    min-height: 64px;
    padding: 12px 16px;
  }

  .api-access-panel__content {
    padding: 0 16px 16px;
  }

  .api-access-guide__example {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

.user-table-wrap {
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 20px;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.user-table th,
.user-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.user-table th {
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.user-table tbody tr:last-child td {
  border-bottom: 0;
}

.user-table tbody tr:hover {
  background: #fcfcfc;
}

.cell-muted {
  color: var(--muted);
  font-size: 13px;
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 20px;
  margin-left: 6px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.tag-admin {
  background: rgba(255, 56, 92, 0.12);
  color: var(--primary);
}

.user-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Login-only launch notice for the weekly distilled research feature. */
.feature-modal-open {
  overflow: hidden;
}

.feature-modal[hidden] {
  display: none;
}

.feature-modal {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.feature-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(30, 26, 25, 0.2);
  backdrop-filter: blur(5px);
}

.feature-modal__panel {
  position: relative;
  width: min(100%, 558px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 22px;
  background: #fffdfc;
  box-shadow: 0 28px 80px rgba(33, 24, 21, 0.25);
  animation: feature-modal-enter 280ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.feature-modal__close {
  position: absolute;
  z-index: 2;
  top: 17px;
  right: 17px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.74);
  color: #6e6865;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.feature-modal__close:hover,
.feature-modal__close:focus-visible {
  background: #fff;
  color: #222;
}

.feature-modal__banner {
  position: relative;
  min-height: 144px;
  overflow: hidden;
  padding: 27px 37px 25px;
  background: #263940;
  color: #f8f8f5;
}

.feature-modal__banner::before,
.feature-modal__banner::after {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  content: "";
}

.feature-modal__banner::before {
  top: -119px;
  right: -84px;
  width: 228px;
  height: 228px;
}

.feature-modal__banner::after {
  top: -77px;
  right: 3px;
  width: 150px;
  height: 150px;
}

.feature-modal__kicker {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #f3a7b4;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.feature-modal__banner h2 {
  position: relative;
  z-index: 1;
  margin: 11px 0 0;
  color: inherit;
  font-size: 31px;
  line-height: 1.18;
  letter-spacing: 0;
  white-space: nowrap;
}

.feature-modal__body {
  padding: 24px 37px 26px;
}

.feature-modal__intro {
  margin: 0;
  color: #5d5654;
  font-size: 14px;
  line-height: 1.7;
}

.feature-modal__steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.feature-modal__step {
  min-width: 0;
  padding: 10px 10px 9px;
  border-top: 2px solid #f3a7b4;
  background: #fbf8f7;
}

.feature-modal__step b {
  display: block;
  color: #4c728e;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.feature-modal__step strong {
  display: block;
  margin-top: 6px;
  color: #393432;
  font-size: 12px;
  line-height: 1.35;
}

.feature-modal__step span {
  display: block;
  margin-top: 3px;
  color: #817874;
  font-size: 11px;
  line-height: 1.4;
}

.feature-modal__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.feature-modal__primary {
  height: 43px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 22px rgba(255, 56, 92, 0.18);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}

.feature-modal__primary:hover,
.feature-modal__primary:focus-visible {
  background: var(--primary-hover);
}

.feature-modal__secondary {
  border: 0;
  background: transparent;
  color: #79716f;
  cursor: pointer;
  font-size: 13px;
}

.feature-modal__secondary:hover,
.feature-modal__secondary:focus-visible {
  color: var(--text);
}

@keyframes feature-modal-enter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 640px) {
  .upgrade-callout,
  .subscribe-offer,
  .subscribe-card__header,
  .subscribe-footer-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .subscribe-grid {
    grid-template-columns: 1fr;
  }

  .payment-qr-grid {
    gap: 8px;
  }

  .payment-qr-card {
    padding-right: 4px;
    padding-left: 4px;
  }

  .payment-qr-card .payment-qr {
    height: 210px;
  }

  .subscribe-card,
  .offer-modal__panel {
    padding: 24px;
  }

  .subscribe-card__header h1 {
    font-size: 29px;
  }

  .subscribe-offer strong {
    font-size: 34px;
  }

  .subscribe-footer-actions .primary-link,
  .subscribe-footer-actions .secondary-link {
    width: 100%;
    margin-left: 0;
  }

  .feature-modal {
    align-items: start;
    padding: 72px 16px 24px;
  }

  .feature-modal__banner,
  .feature-modal__body {
    padding-right: 25px;
    padding-left: 25px;
  }

  .feature-modal__banner h2 {
    font-size: 25px;
  }

  .feature-modal__steps {
    gap: 5px;
  }

  .feature-modal__step {
    padding-right: 7px;
    padding-left: 7px;
  }

  .feature-modal__step strong {
    font-size: 11px;
    white-space: nowrap;
  }

  .feature-modal__step span {
    font-size: 10px;
  }

  /* 认证页顶部在窄屏上分层排列，避免用户名和导航被横向撑出视口。 */
  .topbar {
    width: 100%;
    gap: 12px;
    padding-right: 16px;
    padding-left: 16px;
  }

  .brand {
    min-width: 0;
    max-width: 100%;
  }

  .brand span {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav {
    width: 100%;
    min-width: 0;
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav .welcome {
    flex: 1 1 100%;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav-link,
  .nav form {
    flex: 0 0 auto;
  }

  .nav form {
    margin: 0;
  }

  .nav-link {
    padding-right: 13px;
    padding-left: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .feature-modal__panel {
    animation: none;
  }
}

.primary-button-sm,
.ghost-button-sm,
.research-button-sm {
  height: 32px;
  padding: 0 12px;
  font-size: 12px;
  border-radius: 999px;
  box-shadow: none;
}