:root {
  --color-blue: #2563eb;
  --color-blue-dark: #1e3a8a;
  --color-blue-soft: #eaf3ff;
  --color-yellow: #fff3c4;
  --color-yellow-deep: #f5c542;
  --color-white: #ffffff;
  --color-text: #243047;
  --color-muted: #64748b;
  --color-border: #dbe5f1;
  --shadow-soft: 0 18px 45px rgba(30, 58, 138, 0.12);
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  background: #f8fbff;
  overflow-x: hidden;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  /* 粘性导航便于在长页面中快速切换栏目。 */
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(219, 229, 241, 0.85);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 32px, var(--max-width));
  min-height: 72px;
  margin: 0 auto;
  gap: 24px;
}

.logo {
  flex-shrink: 0;
  color: var(--color-blue-dark);
  font-size: 1.1rem;
  font-weight: 800;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 6px;
  color: #334155;
  font-size: 0.95rem;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
  color: var(--color-blue-dark);
  background: var(--color-blue-soft);
}

.nav-dropdown {
  position: relative;
}

.nav-submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  display: none;
  min-width: 120px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu {
  display: grid;
  gap: 4px;
}

.nav-submenu a {
  min-height: 34px;
  padding: 0 10px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-white);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: var(--color-blue-dark);
}

.hero {
  /* 轻量渐变营造温暖、清爽的首页氛围。 */
  background:
    linear-gradient(135deg, rgba(234, 243, 255, 0.96), rgba(255, 243, 196, 0.9)),
    linear-gradient(90deg, #ffffff, #eaf3ff);
}

.hero-content {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 92px 0 104px;
}

.hero-kicker,
.section-kicker {
  margin: 0 0 12px;
  color: var(--color-blue);
  font-size: 0.95rem;
  font-weight: 700;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--color-blue-dark);
  font-size: clamp(2.35rem, 6vw, 4.7rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 720px;
  margin: 24px 0 0;
  color: #334155;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--color-white);
  background: var(--color-blue);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-secondary {
  color: var(--color-blue-dark);
  border-color: rgba(30, 58, 138, 0.18);
  background: var(--color-white);
}

.btn-secondary:hover {
  box-shadow: 0 10px 22px rgba(30, 58, 138, 0.12);
}

.values {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 72px 0 84px;
}

.home-section {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 68px 0;
}

.home-section-soft {
  width: 100%;
  max-width: none;
  padding: 68px max(16px, calc((100% - var(--max-width)) / 2));
  background: #ffffff;
}

.page-hero {
  background:
    linear-gradient(135deg, rgba(234, 243, 255, 0.98), rgba(255, 243, 196, 0.72)),
    #ffffff;
}

.page-hero-inner,
.page-content {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.page-hero-inner {
  padding: 64px 0 58px;
}

.page-hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--color-blue-dark);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: 0;
}

.page-description {
  max-width: 720px;
  margin: 18px 0 0;
  color: #334155;
  font-size: 1.08rem;
}

.page-content {
  padding: 56px 0 76px;
}

.placeholder-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.placeholder-card {
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.placeholder-card h2,
.placeholder-card h3 {
  margin: 0 0 10px;
  color: var(--color-blue-dark);
  font-size: 1.18rem;
}

.placeholder-card p {
  margin: 0;
  color: var(--color-muted);
}

.page-note {
  padding: 22px 24px;
  border-left: 4px solid var(--color-yellow-deep);
  border-radius: 8px;
  background: #fffaf0;
  color: #475569;
}

.filter-panel {
  display: grid;
  grid-template-columns: minmax(240px, 1.6fr) repeat(3, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.grade-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 34px;
}

.diagnosis-card {
  display: flex;
  flex-direction: column;
}

.diagnosis-card .btn {
  width: 100%;
  margin-top: auto;
}

.grade-filter-panel {
  grid-template-columns: minmax(240px, 1.5fr) repeat(2, minmax(150px, 1fr));
}

.topic-search-panel {
  grid-template-columns: 1fr;
}

.article-filter-panel {
  grid-template-columns: minmax(220px, 360px);
}

.diagnosis-form {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-wide {
  grid-column: 1 / -1;
}

.choice-field {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  margin: 22px 0 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.choice-field legend {
  padding: 0 8px;
  color: var(--color-blue-dark);
  font-weight: 800;
}

.choice-field label,
.privacy-check {
  display: inline-flex;
  align-items: flex-start;
  gap: 8px;
  color: #475569;
}

.privacy-check {
  margin-top: 18px;
}

.form-error {
  margin: 18px 0 0;
  color: #b91c1c;
  font-weight: 700;
}

.diagnosis-form > .btn {
  margin-top: 22px;
}

.diagnosis-result {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 8px;
  background: var(--color-blue-soft);
}

.diagnosis-result h2,
.diagnosis-result h3 {
  margin: 0 0 10px;
  color: var(--color-blue-dark);
}

.diagnosis-result p {
  margin: 0 0 12px;
  color: #475569;
}

.diagnosis-entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 32px;
}

.legal-page {
  display: grid;
  gap: 18px;
}

.legal-card {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.legal-card h2 {
  margin: 0 0 10px;
  color: var(--color-blue-dark);
  font-size: 1.22rem;
}

.legal-card p {
  margin: 0;
  color: #475569;
}

.legal-card ul {
  padding-left: 20px;
  margin: 0;
  color: #475569;
}

.legal-card li + li {
  margin-top: 8px;
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-field span {
  color: var(--color-blue-dark);
  font-size: 0.92rem;
  font-weight: 800;
}

.filter-field input,
.filter-field select {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  font: inherit;
  background: #ffffff;
}

.filter-field input:focus,
.filter-field select:focus {
  border-color: var(--color-blue);
  outline: 3px solid rgba(37, 99, 235, 0.14);
}

.resources-heading {
  margin-bottom: 24px;
}

.resource-count {
  margin: 0;
  color: var(--color-muted);
  font-weight: 700;
}

.empty-state {
  margin: 0;
  padding: 28px;
  border: 1px dashed #aac3e5;
  border-radius: 8px;
  color: var(--color-muted);
  text-align: center;
  background: #ffffff;
}

.resource-list-grid .empty-state {
  grid-column: 1 / -1;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 32px;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  max-width: none;
  gap: 20px;
}

.section-heading h2 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.2;
}

.section-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-blue-dark);
  font-weight: 700;
  background: var(--color-white);
}

.section-link:hover {
  background: var(--color-blue-soft);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.value-card {
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 6px;
  color: var(--color-blue-dark);
  font-weight: 800;
  background: var(--color-yellow);
}

.value-card h3 {
  margin: 0 0 10px;
  color: var(--color-blue-dark);
  font-size: 1.25rem;
}

.value-card p {
  margin: 0;
  color: var(--color-muted);
}

.quick-link-grid,
.resource-grid,
.score-path-grid {
  display: grid;
  gap: 22px;
}

.grade-link-grid {
  grid-template-columns: repeat(3, 1fr);
}

.quick-link-card,
.resource-card,
.score-path-card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.quick-link-card {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.quick-link-card:hover {
  border-color: rgba(37, 99, 235, 0.32);
  transform: translateY(-2px);
}

.quick-link-tag {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  font-size: 0.86rem;
  font-weight: 800;
  background: var(--color-yellow);
}

.quick-link-card strong {
  margin-top: 18px;
  color: var(--color-blue-dark);
  font-size: 1.25rem;
}

.quick-link-card span:last-child {
  margin-top: 10px;
  color: var(--color-muted);
}

.topic-chip-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.topic-chip-grid a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-blue-dark);
  font-weight: 800;
  text-align: center;
  background: var(--color-white);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.topic-chip-grid a:hover {
  background: var(--color-blue-soft);
  transform: translateY(-2px);
}

.topic-nav-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
  margin-bottom: 46px;
}

.topic-nav-grid a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-blue-dark);
  font-weight: 800;
  text-align: center;
  background: var(--color-white);
  box-shadow: 0 10px 24px rgba(30, 58, 138, 0.08);
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.topic-nav-grid a:hover {
  border-color: rgba(37, 99, 235, 0.34);
  background: var(--color-blue-soft);
  transform: translateY(-2px);
}

.topic-group-list {
  display: grid;
  gap: 22px;
}

.topic-group-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 10px 24px rgba(30, 58, 138, 0.08);
}

.topic-group-heading {
  margin-bottom: 18px;
}

.topic-group-heading h3 {
  margin: 0 0 8px;
  color: var(--color-blue-dark);
  font-size: 1.2rem;
}

.topic-group-heading p {
  margin: 0;
  color: var(--color-muted);
}

.topic-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.topic-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-blue-dark);
  font-weight: 800;
  text-align: center;
  background: #f8fbff;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.topic-card:hover,
.topic-card.is-active {
  border-color: rgba(245, 197, 66, 0.95);
  background: var(--color-yellow);
  transform: translateY(-2px);
}

.topic-section {
  scroll-margin-top: 92px;
  padding: 36px 0;
  border-top: 1px solid var(--color-border);
}

.topic-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.topic-section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.topic-section-header h2 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.2;
}

.topic-section-header p {
  margin: 8px 0 0;
  color: var(--color-muted);
}

.topic-count {
  flex-shrink: 0;
  color: var(--color-blue);
  font-weight: 800;
}

.topic-type-block {
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
}

.topic-type-block:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.topic-type-block h3 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: 1.25rem;
}

.diagnosis-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 34px;
  padding: 30px;
  border: 1px solid rgba(245, 197, 66, 0.75);
  border-radius: 8px;
  background: #fffaf0;
}

.diagnosis-cta h2 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.25;
}

.diagnosis-cta .btn {
  flex-shrink: 0;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 0.9fr);
  gap: 26px;
  align-items: start;
}

.detail-panel,
.detail-side-card,
.related-section,
.community-cta,
.copyright-note {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.detail-panel {
  padding: 30px;
}

.detail-panel h2,
.related-section h2,
.community-cta h2,
.detail-side-card h2 {
  margin: 0 0 12px;
  color: var(--color-blue-dark);
  font-size: 1.28rem;
  line-height: 1.3;
}

.detail-panel section + section {
  margin-top: 28px;
}

.detail-panel p {
  margin: 0;
  color: var(--color-muted);
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 26px;
}

.detail-tags span {
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  font-size: 0.9rem;
  font-weight: 800;
  background: var(--color-blue-soft);
}

.content-list {
  padding-left: 20px;
  margin: 0;
  color: var(--color-muted);
}

.content-list li + li {
  margin-top: 8px;
}

.detail-side {
  display: grid;
  gap: 18px;
}

.detail-side-card {
  padding: 24px;
}

.detail-side-card p {
  margin: 0 0 18px;
  color: var(--color-muted);
}

.detail-side-card .btn {
  width: 100%;
}

.copyright-note {
  padding: 20px 22px;
  color: #475569;
  background: #fffaf0;
}

.related-section {
  margin-top: 28px;
  padding: 28px;
}

.community-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 28px;
  padding: 30px;
  background: linear-gradient(135deg, #ffffff, #fffaf0);
}

.community-cta p {
  margin: 0;
  color: var(--color-muted);
}

.community-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.resource-grid {
  grid-template-columns: repeat(3, 1fr);
}

.resource-list-grid {
  grid-template-columns: repeat(2, 1fr);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.article-card {
  display: flex;
  min-height: 300px;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.article-meta span {
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  font-weight: 800;
  background: var(--color-blue-soft);
}

.article-card h3 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: 1.25rem;
  line-height: 1.35;
}

.article-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.article-target {
  color: #475569;
  font-weight: 700;
}

.article-card .btn {
  width: 100%;
  margin-top: auto;
}

.article-body {
  max-width: 840px;
  padding: 34px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.article-detail-meta {
  margin-bottom: 20px;
}

.article-body section {
  margin-top: 34px;
}

.article-body h2 {
  margin: 0 0 14px;
  color: var(--color-blue-dark);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  line-height: 1.3;
}

.article-body p {
  margin: 0 0 14px;
  color: #475569;
  font-size: 1.03rem;
}

.faq-section {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.faq-item {
  padding: 18px;
  border-radius: 8px;
  background: #f8fbff;
}

.faq-item + .faq-item {
  margin-top: 14px;
}

.faq-item h3 {
  margin: 0 0 8px;
  color: var(--color-blue-dark);
  font-size: 1.05rem;
}

.resource-card {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: 24px;
}

.resource-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.resource-meta span {
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--color-blue-soft);
}

.resource-card h3 {
  margin: 0;
  color: var(--color-blue-dark);
  font-size: 1.16rem;
  line-height: 1.35;
}

.resource-target {
  margin: 12px 0 0;
  color: #475569;
  font-size: 0.94rem;
}

.resource-description {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.resource-card .btn {
  width: 100%;
  margin-top: auto;
}

.resource-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
}

.resource-actions-single {
  grid-template-columns: 1fr;
}

.resource-actions .btn {
  margin-top: 0;
}

.score-path-grid {
  grid-template-columns: repeat(4, 1fr);
}

.score-path-card {
  min-height: 230px;
  padding: 24px;
}

.score-path-card span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--color-blue);
  font-weight: 800;
}

.score-path-card h3 {
  margin: 0 0 10px;
  color: var(--color-blue-dark);
  font-size: 1.12rem;
  line-height: 1.35;
}

.score-path-card p {
  margin: 0;
  color: var(--color-muted);
}

.vocabulary-feature-grid,
.vocab-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.vocab-category-card {
  display: flex;
  min-height: 180px;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-white);
  box-shadow: 0 12px 30px rgba(30, 58, 138, 0.09);
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.vocab-category-card span {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  font-size: 0.9rem;
  font-weight: 800;
  background: var(--color-yellow);
}

.vocab-category-card strong {
  color: var(--color-blue-dark);
  font-size: 1.05rem;
  line-height: 1.35;
}

.vocab-category-card small {
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.vocab-category-card:hover,
.vocab-category-card.is-active {
  border-color: rgba(37, 99, 235, 0.34);
  background: var(--color-blue-soft);
  transform: translateY(-2px);
}

.vocab-resource-section,
.vocab-advice {
  margin-top: 44px;
}

.vocab-filter-panel {
  grid-template-columns: minmax(240px, 1.5fr) repeat(2, minmax(150px, 1fr));
}

.vocab-advice {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 12px 30px rgba(30, 58, 138, 0.09);
}

.site-footer {
  color: #dbeafe;
  background: var(--color-blue-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 34px;
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 48px 0 34px;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: var(--color-white);
  font-size: 1rem;
}

.site-footer p {
  margin: 0 0 8px;
  color: #bfdbfe;
}

.site-footer ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.site-footer li + li {
  margin-top: 8px;
}

.site-footer a {
  color: #bfdbfe;
}

.site-footer a:hover {
  color: var(--color-yellow);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
  padding: 18px 0 24px;
  border-top: 1px solid rgba(191, 219, 254, 0.25);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  /* 移动端导航折叠为按钮，避免菜单挤占首屏空间。 */
  .navbar {
    min-height: 64px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 16px 18px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-white);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    min-height: 44px;
    padding: 0 10px;
  }

  .nav-dropdown {
    display: grid;
    gap: 0;
  }

  .nav-submenu {
    position: static;
    display: grid;
    gap: 0;
    padding: 0 0 0 14px;
    border: 0;
    box-shadow: none;
    background: transparent;
  }

  .nav-submenu a {
    min-height: 40px;
    color: var(--color-muted);
  }

  .hero-content {
    padding: 68px 0 76px;
  }

  .value-grid,
  .placeholder-grid,
  .grade-info-grid,
  .grade-link-grid,
  .diagnosis-entry-grid,
  .resource-grid,
  .resource-list-grid,
  .article-grid,
  .vocabulary-feature-grid,
  .vocab-category-grid,
  .score-path-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .filter-panel {
    grid-template-columns: 1fr 1fr;
  }

  .grade-filter-panel {
    grid-template-columns: 1fr;
  }

  .vocab-filter-panel {
    grid-template-columns: 1fr;
  }

  .topic-chip-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .topic-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .topic-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .topic-section-header,
  .detail-layout,
  .diagnosis-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .detail-layout {
    display: flex;
  }

  .community-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .value-card {
    min-height: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .navbar,
  .hero-content,
  .values,
  .home-section,
  .footer-grid,
  .footer-bottom {
    width: min(100% - 24px, var(--max-width));
  }

  .home-section-soft {
    width: 100%;
    padding-right: 12px;
    padding-left: 12px;
  }

  .page-hero-inner,
  .page-content {
    width: min(100% - 24px, var(--max-width));
  }

  .logo {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .topic-chip-grid {
    grid-template-columns: 1fr;
  }

  .topic-nav-grid {
    grid-template-columns: 1fr;
  }

  .topic-card-grid {
    grid-template-columns: 1fr;
  }

  .filter-panel,
  .form-grid,
  .diagnosis-entry-grid,
  .resource-actions,
  .community-actions {
    grid-template-columns: 1fr;
  }

  .form-wide {
    grid-column: auto;
  }

  .detail-panel,
  .article-body,
  .related-section,
  .community-cta {
    padding: 22px;
  }

  .community-actions,
  .community-actions .btn {
    width: 100%;
  }
}

/* Stage 14 visual polish: professional spacing, mobile comfort, and low-noise CTAs. */
.placeholder-card,
.value-card,
.quick-link-card,
.resource-card,
.article-card,
.score-path-card,
.legal-card,
.detail-panel,
.detail-side-card,
.related-section,
.community-cta,
.diagnosis-form,
.filter-panel {
  box-shadow: 0 12px 30px rgba(30, 58, 138, 0.09);
}

.placeholder-card,
.value-card,
.quick-link-card,
.resource-card,
.article-card,
.score-path-card,
.legal-card {
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.placeholder-card:hover,
.value-card:hover,
.quick-link-card:hover,
.resource-card:hover,
.article-card:hover,
.score-path-card:hover,
.legal-card:hover {
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: 0 16px 34px rgba(30, 58, 138, 0.12);
}

.community-cta,
.diagnosis-cta {
  box-shadow: none;
}

.filter-field input,
.filter-field select,
.choice-field input,
.privacy-check input {
  accent-color: var(--color-blue);
}

.filter-field input,
.filter-field select {
  min-height: 50px;
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(30, 58, 138, 0.18);
  border-radius: 999px;
  color: var(--color-white);
  font-size: 1.25rem;
  font-weight: 800;
  background: var(--color-blue);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.24);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-blue-dark);
}

.admin-body {
  background: #f7fbff;
}

.admin-hero .page-hero-inner {
  padding-bottom: 34px;
}

.admin-page {
  width: min(100% - 32px, 1320px);
}

.admin-alert,
.admin-toolbar,
.admin-editor,
.admin-security-note {
  margin-bottom: 22px;
  padding: 22px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 8px;
  background: var(--color-white);
  box-shadow: 0 12px 28px rgba(30, 58, 138, 0.08);
}

.admin-alert {
  border-color: rgba(245, 158, 11, 0.3);
  background: #fffbeb;
}

.admin-alert p {
  margin: 8px 0 0;
  color: var(--color-muted);
}

.admin-alert-soft {
  background: #f8fbff;
}

.admin-toolbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.admin-tool-group h2,
.admin-panel h2,
.admin-security-note h2 {
  margin: 0 0 12px;
  font-size: 1.08rem;
}

.admin-button-row,
.admin-form-actions,
.admin-row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.admin-button-row .btn,
.admin-form-actions .btn {
  min-height: 42px;
}

.admin-danger-btn,
.admin-row-actions button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid rgba(30, 58, 138, 0.16);
  border-radius: 6px;
  color: var(--color-blue-dark);
  background: var(--color-white);
  cursor: pointer;
}

.admin-danger-btn,
.admin-row-actions .is-danger {
  border-color: rgba(220, 38, 38, 0.22);
  color: #b91c1c;
  background: #fff7f7;
}

.admin-file-input {
  display: none;
}

.admin-status {
  min-height: 26px;
  margin: 0 0 16px;
  color: var(--color-muted);
  font-weight: 700;
}

.admin-status[data-type="success"] {
  color: #047857;
}

.admin-status[data-type="warn"] {
  color: #b45309;
}

.admin-status[data-type="error"] {
  color: #b91c1c;
}

.admin-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.admin-summary article {
  padding: 18px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 8px;
  background: var(--color-white);
}

.admin-summary strong {
  display: block;
  color: var(--color-blue-dark);
  font-size: 1.8rem;
}

.admin-summary span {
  color: var(--color-muted);
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.admin-tabs button {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 999px;
  color: var(--color-blue-dark);
  background: var(--color-white);
  cursor: pointer;
}

.admin-tabs button.is-active {
  color: var(--color-white);
  background: var(--color-blue);
}

.admin-panel {
  display: none;
  padding: 24px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 8px;
  background: var(--color-white);
}

.admin-panel.is-active {
  display: block;
}

.admin-panel-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 18px;
}

.admin-filter-bar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.admin-table-wrap {
  overflow-x: auto;
  border: 1px solid rgba(30, 58, 138, 0.1);
  border-radius: 8px;
}

.admin-table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 13px 14px;
  border-bottom: 1px solid rgba(30, 58, 138, 0.08);
  text-align: left;
  vertical-align: top;
}

.admin-table th {
  color: var(--color-blue-dark);
  font-size: 0.88rem;
  background: #f8fbff;
}

.admin-table td small {
  display: block;
  margin-top: 4px;
  color: var(--color-muted);
}

.admin-status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  color: var(--color-blue-dark);
  background: #eef5ff;
  font-size: 0.85rem;
  font-weight: 700;
}

.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.admin-form-grid label {
  display: grid;
  gap: 7px;
  color: var(--color-blue-dark);
  font-weight: 700;
}

.admin-form-grid input,
.admin-form-grid select,
.admin-form-grid textarea,
.admin-topic-row input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid rgba(30, 58, 138, 0.16);
  border-radius: 6px;
  color: var(--color-text);
  font: inherit;
  background: var(--color-white);
}

.admin-form-grid textarea {
  min-height: 104px;
  resize: vertical;
}

.admin-form-wide {
  grid-column: 1 / -1;
}

.admin-check {
  align-content: center;
  grid-template-columns: auto 1fr;
  gap: 10px;
}

.admin-check input {
  width: 18px;
  min-height: 18px;
  accent-color: var(--color-blue);
}

.admin-form-actions {
  margin-top: 18px;
}

.topic-group-admin {
  display: grid;
  gap: 18px;
  margin-bottom: 22px;
}

.admin-topic-card {
  margin: 0;
}

.admin-topic-list {
  display: grid;
  gap: 10px;
  margin: 14px 0;
}

.admin-topic-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.admin-security-note {
  margin-top: 24px;
}

@media (min-width: 861px) {
  .nav-menu {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

@media (max-width: 860px) {
  body {
    font-size: 16px;
  }

  .site-header {
    backdrop-filter: none;
  }

  .navbar {
    width: min(100% - 24px, var(--max-width));
    gap: 12px;
  }

  .logo {
    max-width: calc(100% - 58px);
    line-height: 1.25;
  }

  .nav-toggle {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
  }

  .nav-menu {
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    padding: 10px 12px 16px;
    box-shadow: 0 18px 32px rgba(30, 58, 138, 0.12);
  }

  .nav-menu a,
  .nav-submenu a {
    min-height: 46px;
    border-radius: 6px;
    font-size: 1rem;
  }

  .hero-content {
    padding: 56px 0 64px;
  }

  .hero h1 {
    font-size: clamp(2.15rem, 10vw, 3.2rem);
    line-height: 1.12;
  }

  .hero-subtitle,
  .page-description {
    font-size: 1.04rem;
  }

  .home-section,
  .values,
  .page-content {
    padding-top: 48px;
    padding-bottom: 58px;
  }

  .home-section-soft {
    padding-top: 50px;
    padding-bottom: 58px;
  }

  .page-hero-inner {
    padding: 48px 0 46px;
  }

  .section-heading {
    margin-bottom: 24px;
  }

  .placeholder-card,
  .value-card,
  .quick-link-card,
  .resource-card,
  .article-card,
  .score-path-card,
  .legal-card,
  .detail-panel,
  .detail-side-card,
  .related-section,
  .community-cta,
  .diagnosis-form,
  .filter-panel {
    padding: 22px;
  }

  .resource-card,
  .article-card,
  .score-path-card,
  .quick-link-card {
    min-height: auto;
  }

  .resource-grid,
  .resource-list-grid,
  .article-grid,
  .placeholder-grid,
  .value-grid,
  .quick-link-grid,
  .vocabulary-feature-grid,
  .vocab-category-grid,
  .score-path-grid,
  .diagnosis-entry-grid {
    gap: 18px;
  }

  .footer-grid {
    gap: 24px;
    padding: 38px 0 28px;
  }

  .footer-bottom {
    gap: 8px;
    padding: 16px 0 22px;
  }

  .admin-page {
    width: 100%;
    max-width: 100%;
    padding-right: 12px;
    padding-left: 12px;
    overflow-x: hidden;
  }

  .admin-page *,
  .admin-panel,
  .admin-toolbar,
  .admin-alert,
  .admin-editor,
  .admin-security-note,
  .admin-table-wrap {
    max-width: 100%;
  }

  .admin-toolbar,
  .admin-summary,
  .admin-filter-bar,
  .admin-form-grid {
    grid-template-columns: 1fr;
  }

  .admin-panel {
    padding: 18px;
  }

  .admin-panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-table {
    min-width: 760px;
  }

  .admin-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .admin-topic-row {
    grid-template-columns: 1fr;
  }
}

.admin-panel:not(.is-active) {
  display: none !important;
}

.admin-table-wrap {
  display: block;
  max-width: 100%;
  overflow-x: auto !important;
  overflow-y: hidden;
}

.admin-table {
  max-width: none !important;
}

@media (max-width: 520px) {
  .hero-actions,
  .resource-actions,
  .community-actions {
    gap: 10px;
  }

  .btn,
  .section-link {
    min-height: 52px;
    padding-right: 18px;
    padding-left: 18px;
  }

  .filter-panel,
  .diagnosis-form {
    padding: 18px;
  }

  .choice-field {
    display: grid;
    gap: 12px;
    padding: 16px;
  }

  .privacy-check {
    line-height: 1.45;
  }

  .topic-nav-grid a,
  .topic-chip-grid a {
    min-height: 54px;
  }

  .article-body p {
    font-size: 1rem;
  }

  .site-footer h2 {
    font-size: 1.02rem;
  }

  .site-footer p,
  .site-footer a {
    font-size: 0.96rem;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
  }
}

@media (max-width: 860px) {
  .admin-page {
    width: 100%;
    max-width: 100%;
    padding-right: 12px;
    padding-left: 12px;
    overflow-x: hidden;
  }

  .admin-page *,
  .admin-panel,
  .admin-toolbar,
  .admin-alert,
  .admin-editor,
  .admin-security-note,
  .admin-table-wrap {
    max-width: 100%;
  }

  .admin-toolbar,
  .admin-summary,
  .admin-filter-bar,
  .admin-form-grid {
    grid-template-columns: 1fr;
  }

  .admin-panel {
    padding: 18px;
  }

  .admin-panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-table-wrap {
    overflow-x: auto;
  }

  .admin-table {
    min-width: 720px;
  }

  .admin-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .admin-topic-row {
    grid-template-columns: 1fr;
  }
}