:root {
  --bg: #ffffff;
  --ink: #2b2b2b;
  --ink-soft: #6b6b6b;
  --line: #e5e5e5;
  --green: #4a7c59;
  --blue: #3f6f8f;
  --orange: #b07d3a;
  --purple: #7a5a8f;
  --radius: 8px;
  --radius-sm: 6px;
  --wrap: 1080px;
  --gap: 24px;
}

/* ============================================================
   base
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body.site-body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

p {
  margin: 0;
}

ul,
ol,
dl {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

button {
  font: inherit;
  color: inherit;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ============================================================
   layout
   ============================================================ */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.header-top {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 20px 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.brand-slogan {
  font-size: 13px;
  color: var(--ink-soft);
}

.site-nav {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px 12px;
}

.nav-toggle {
  display: none;
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  background: #f7f8f7;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  min-height: 40px;
  line-height: 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: #f4f6f4;
  border-color: var(--line);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--green);
  font-weight: 700;
  border-color: #cddccf;
  background: #f2f7f3;
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px 40px;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px 48px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 16px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.breadcrumb-sep {
  color: #b8b8b8;
}

.breadcrumb-current {
  color: var(--ink-soft);
}

.page-header {
  padding: 14px 0 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
}

.page-description {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fafaf9;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 28px 20px 8px;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 2fr;
  gap: 24px 40px;
}

.footer-brand {
  min-width: 0;
}

.footer-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.footer-desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-soft);
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-group a {
  font-size: 13px;
  color: var(--ink-soft);
}

.footer-group a:hover,
.footer-group a:focus-visible {
  color: var(--green);
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 20px 22px;
  font-size: 12px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* ============================================================
   components
   ============================================================ */

.btn {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  border: 1px solid transparent;
  text-align: center;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  background: var(--green);
  color: #ffffff;
  border-color: var(--green);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #3f6b4c;
  border-color: #3f6b4c;
}

.btn-secondary {
  background: #ffffff;
  color: var(--blue);
  border-color: #c3d6e2;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: #f1f6fa;
}

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--ink);
  border-color: #c9c9c9;
}

.btn-plain {
  display: inline-block;
  padding: 10px 18px;
  min-height: 44px;
  line-height: 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink-soft);
}

.btn-plain:hover,
.btn-plain:focus-visible {
  color: var(--ink);
  text-decoration: none;
  border-color: #c9c9c9;
}

.section-more {
  margin-top: 18px;
  font-size: 14px;
}

.section-more a {
  color: var(--green);
  font-weight: 700;
}

.tag,
.cover-tag {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 20px;
  border-radius: 4px;
  border: 1px solid currentColor;
}

.tag-green,
.tag-daily {
  color: var(--green);
}

.tag-blue,
.tag-fantasy {
  color: var(--blue);
}

.tag-orange,
.tag-mystery {
  color: var(--orange);
}

.tag-purple,
.tag-growth {
  color: var(--purple);
}

/* ============================================================
   pages · index
   ============================================================ */

.home-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.home-section:last-of-type {
  border-bottom: 0;
}

.home-section h2 {
  font-size: 20px;
}

.section-lead {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 780px;
}

.home-hero {
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(320px, 1.5fr) minmax(260px, 1fr);
  gap: 28px 36px;
  align-items: start;
}

.hero-notice {
  grid-column: 1 / -1;
  display: inline-block;
  padding: 6px 12px;
  background: #f2f7f3;
  border: 1px solid #cddccf;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--green);
}

.hero-title {
  font-size: 28px;
  font-weight: 700;
  margin-top: 14px;
}

.hero-summary {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.hero-actions {
  grid-column: 1;
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-figure {
  grid-column: 2;
  grid-row: 2 / span 3;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f7f8f7;
}

.hero-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.taxonomy-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.taxonomy-col {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.taxonomy-name {
  font-size: 16px;
}

.taxonomy-col:nth-child(1) .taxonomy-name {
  color: var(--green);
}

.taxonomy-col:nth-child(2) .taxonomy-name {
  color: var(--blue);
}

.taxonomy-col:nth-child(3) .taxonomy-name {
  color: var(--orange);
}

.taxonomy-col:nth-child(4) .taxonomy-name {
  color: var(--purple);
}

.taxonomy-feature {
  font-size: 14px;
}

.taxonomy-scope {
  font-size: 13px;
  color: var(--ink-soft);
}

.taxonomy-link {
  margin-top: auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
}

.coverwall-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cover-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #ffffff;
  padding-bottom: 12px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.cover-card:hover {
  transform: translateY(-2px);
  border-color: #c9d6cb;
  box-shadow: 0 4px 12px rgba(43, 43, 43, 0.07);
}

.cover-media {
  background: #f2f3f2;
}

.cover-media img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.cover-card:nth-child(3n + 2) .cover-media img {
  height: 220px;
}

.cover-name {
  margin: 12px 14px 0;
  font-size: 16px;
}

.cover-meta {
  margin: 6px 14px 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.cover-status {
  margin: 4px 14px 0;
  font-size: 13px;
  color: var(--green);
}

.update-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.update-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1.6fr) 110px 130px;
  gap: 12px;
  align-items: center;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.update-date {
  color: var(--ink-soft);
  font-size: 13px;
}

.update-name {
  font-weight: 700;
}

.update-tag {
  font-size: 13px;
  color: var(--blue);
}

.update-state {
  font-size: 13px;
  color: var(--green);
  text-align: right;
}

.ranking-layout {
  margin-top: 20px;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  gap: 32px;
  align-items: start;
}

.ranking-main {
  min-width: 0;
}

.rank-list {
  border-top: 1px solid var(--line);
}

.rank-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1.4fr) 100px minmax(0, 1.6fr);
  gap: 12px;
  align-items: baseline;
  padding: 10px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.rank-no {
  font-weight: 700;
  color: var(--orange);
}

.rank-name {
  font-size: 15px;
  font-weight: 700;
}

.rank-tag {
  font-size: 13px;
  color: var(--blue);
}

.rank-note {
  font-size: 13px;
  color: var(--ink-soft);
}

.ranking-aside {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.aside-title {
  font-size: 16px;
}

.aside-text {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.aside-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-list a {
  font-size: 14px;
  color: var(--green);
}

.topic-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.topic-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.topic-name {
  font-size: 16px;
}

.topic-cover {
  margin-top: 8px;
  font-size: 13px;
  color: var(--blue);
}

.topic-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.fields-layout {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.fields-col {
  min-width: 0;
}

.fields-subtitle {
  font-size: 16px;
}

.fields-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.fields-link {
  margin-top: 10px;
  font-size: 14px;
}

.fields-link a {
  color: var(--green);
  font-weight: 700;
}

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

.index-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
}

.index-item:hover,
.index-item:focus-visible {
  border-color: #c9d6cb;
  background: #f6faf7;
  text-decoration: none;
}

.index-note {
  font-weight: 400;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ============================================================
   pages · tacai
   ============================================================ */

.section {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: 0;
}

.section h2 {
  font-size: 20px;
}

.overview-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.overview-cell {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.overview-name {
  font-size: 16px;
}

.overview-daily .overview-name {
  color: var(--green);
}

.overview-fantasy .overview-name {
  color: var(--blue);
}

.overview-mystery .overview-name {
  color: var(--orange);
}

.overview-growth .overview-name {
  color: var(--purple);
}

.overview-scope {
  font-size: 13px;
  color: var(--ink-soft);
}

.overview-link {
  margin-top: auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
}

.direction-block {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: #fdfdfc;
}

.direction-daily {
  border-left-color: var(--green);
}

.direction-fantasy {
  border-left-color: var(--blue);
}

.direction-mystery {
  border-left-color: var(--orange);
}

.direction-growth {
  border-left-color: var(--purple);
}

.direction-name {
  font-size: 16px;
}

.direction-fields {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 6px 16px;
  font-size: 14px;
}

.direction-fields dt {
  color: var(--ink-soft);
  font-size: 13px;
}

.direction-fields dd {
  margin: 0;
}

.wall-group {
  margin-top: 24px;
}

.wall-group-title {
  font-size: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.wall-daily .wall-group-title {
  color: var(--green);
}

.wall-fantasy .wall-group-title {
  color: var(--blue);
}

.wall-mystery .wall-group-title {
  color: var(--orange);
}

.wall-growth .wall-group-title {
  color: var(--purple);
}

.cover-wall {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.cover-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #ffffff;
  padding-bottom: 12px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.cover-item:hover {
  transform: translateY(-2px);
  border-color: #c9d6cb;
}

.cover-figure {
  background: #f2f3f2;
}

.cover-figure img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.cover-title {
  margin: 10px 12px 0;
  font-size: 15px;
  font-weight: 700;
}

.cover-item .cover-meta {
  margin: 6px 12px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.cover-item .cover-status {
  font-size: 12px;
  color: var(--ink-soft);
}

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

.related-item {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-name {
  font-size: 16px;
}

.related-desc {
  font-size: 13px;
  color: var(--ink-soft);
}

.related-link {
  margin-top: auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
}

/* ============================================================
   pages · gengxin
   ============================================================ */

.update-intro-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  gap: 28px;
  align-items: start;
}

.update-intro-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
}

.update-intro-fields {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
  font-size: 14px;
}

.update-intro-fields dt {
  color: var(--ink-soft);
  font-size: 13px;
}

.update-intro-fields dd {
  margin: 0;
}

.update-day {
  margin-top: 22px;
}

.update-day-title {
  font-size: 15px;
  color: var(--ink);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.update-log .update-list {
  margin-top: 0;
}

.update-item {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) 120px 140px;
  gap: 12px;
  align-items: center;
  padding: 10px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.update-item .update-name {
  font-weight: 700;
}

.update-item .update-tag {
  font-size: 13px;
  color: var(--blue);
}

.update-item .update-state {
  font-size: 13px;
  color: var(--green);
  text-align: right;
}

.update-state-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.update-state-note h2 {
  grid-column: 1 / -1;
}

.update-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f7f8f7;
}

.update-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.update-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.state-list {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.state-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.state-item h3 {
  font-size: 15px;
}

.state-item p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.state-link {
  grid-column: 1 / -1;
  font-size: 14px;
}

.state-link a {
  color: var(--green);
  font-weight: 700;
}

.direction-lead {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.direction-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.direction-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
}

.direction-item a:hover,
.direction-item a:focus-visible {
  border-color: #c9d6cb;
  background: #f6faf7;
  text-decoration: none;
}

.direction-item .direction-name {
  font-size: 15px;
  font-weight: 700;
}

.direction-item .direction-desc {
  font-size: 13px;
  color: var(--ink-soft);
}

.direction-more {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.direction-more a {
  color: var(--green);
  font-weight: 700;
}

/* ============================================================
   pages · bangdan
   ============================================================ */

.rank-method-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.method-block {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.method-title {
  font-size: 16px;
}

.method-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.rank-items {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.rank-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.rank-item .rank-no {
  font-size: 16px;
  font-weight: 700;
  color: var(--orange);
  line-height: 1.5;
}

.rank-body {
  min-width: 0;
}

.rank-body .rank-name {
  font-size: 16px;
}

.rank-meta {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.rank-status {
  color: var(--ink-soft);
}

.rank-body .rank-note {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.editor-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.editor-name {
  font-size: 16px;
}

.editor-scope {
  margin-top: 6px;
  font-size: 13px;
  color: var(--blue);
}

.editor-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.topic-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.topic-item a {
  font-size: 15px;
  font-weight: 700;
  color: var(--green);
}

.topic-note {
  font-size: 13px;
  color: var(--ink-soft);
}

.rank-figure {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f7f8f7;
}

.rank-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.rank-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

/* ============================================================
   pages · shuoming
   ============================================================ */

.section-intro {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 780px;
}

.page-media {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f7f8f7;
}

.page-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.page-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.glossary-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
}

.glossary-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.glossary-item dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.glossary-item dd {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.boundary-columns {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.boundary-col {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.boundary-col h3 {
  font-size: 16px;
}

.boundary-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
}

.feedback-steps {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  counter-reset: feedback;
}

.feedback-step {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
  counter-increment: feedback;
}

.feedback-step h3 {
  font-size: 16px;
}

.feedback-step h3::before {
  content: counter(feedback) ". ";
  color: var(--green);
}

.feedback-step p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.entry-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.entry-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
}

.entry-item a:hover,
.entry-item a:focus-visible {
  border-color: #c9d6cb;
  background: #f6faf7;
  text-decoration: none;
}

.entry-name {
  font-size: 15px;
  font-weight: 700;
}

.entry-desc {
  font-size: 13px;
  color: var(--ink-soft);
}

.faq-block {
  padding-bottom: 36px;
}

.faq-item {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fdfdfc;
}

.faq-item summary {
  padding: 14px 18px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--green);
  font-weight: 700;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:hover,
.faq-item summary:focus-visible {
  color: var(--green);
}

.faq-item p {
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* ============================================================
   pages · 404
   ============================================================ */

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px 20px 56px;
  width: 100%;
}

.error-panel {
  max-width: 640px;
}

.error-panel h1 {
  font-size: 28px;
}

.error-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.error-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.error-links h2 {
  font-size: 20px;
}

.error-link-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.error-link-list a {
  display: block;
  padding: 14px 16px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.error-link-list a:hover,
.error-link-list a:focus-visible {
  border-color: #c9d6cb;
  background: #f6faf7;
  text-decoration: none;
}

/* ============================================================
   responsive
   ============================================================ */

@media (max-width: 960px) {
  .taxonomy-grid,
  .overview-grid,
  .cover-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .coverwall-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cover-card:nth-child(3n + 2) .cover-media img {
    height: 190px;
  }

  .topic-grid,
  .editor-grid,
  .feedback-steps,
  .related-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-figure {
    grid-column: 1;
    grid-row: auto;
  }

  .hero-actions {
    grid-column: 1;
  }

  .ranking-layout,
  .update-intro-grid,
  .update-state-note {
    grid-template-columns: minmax(0, 1fr);
  }

  .update-state-note h2,
  .state-link {
    grid-column: 1;
  }
}

@media (max-width: 768px) {
  .header-top {
    padding: 12px 16px 8px;
  }

  .site-nav {
    padding: 0 16px 12px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
  }

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

  .nav-list a {
    display: block;
    width: 100%;
    padding: 12px 14px;
    min-height: 44px;
    line-height: 20px;
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-header {
    padding: 12px 0 18px;
    margin-bottom: 22px;
  }

  .page-title,
  .hero-title,
  .error-panel h1 {
    font-size: 22px;
  }

  .home-section,
  .section {
    padding: 24px 0;
  }

  .taxonomy-grid,
  .overview-grid,
  .coverwall-grid,
  .cover-wall,
  .topic-grid,
  .editor-grid,
  .feedback-steps,
  .related-list,
  .glossary-list,
  .boundary-columns,
  .entry-list,
  .rank-method-grid,
  .direction-list,
  .fields-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .index-grid,
  .error-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-figure img,
  .update-figure img,
  .page-media img,
  .rank-figure img {
    height: 200px;
  }

  .update-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    padding: 12px 4px;
  }

  .update-row .update-state {
    text-align: left;
  }

  .rank-row {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .rank-row .rank-tag,
  .rank-row .rank-note {
    grid-column: 2;
  }

  .update-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    padding: 12px 4px;
  }

  .update-item .update-state {
    text-align: left;
  }

  .direction-fields {
    grid-template-columns: 110px minmax(0, 1fr);
  }

  .update-intro-fields {
    grid-template-columns: 88px minmax(0, 1fr);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 24px 16px 8px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .footer-copy {
    padding: 14px 16px 22px;
  }
}

@media (max-width: 420px) {
  .index-grid,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .btn,
  .error-actions .btn-primary,
  .error-actions .btn-plain {
    width: 100%;
  }
}