:root {
  --bg: #f7fafb;
  --card: #ffffff;
  --ink: #1f2d3d;
  --ink-soft: #5a6b7b;
  --primary: #0f8a8a;
  --primary-dark: #0b6d6d;
  --accent: #3aa6a0;
  --warm: #e07a5f;
  --line: #e2ecee;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(31, 45, 61, 0.05);
  --shadow-hover: 0 6px 16px rgba(15, 138, 138, 0.12);
  --shell: 1120px;
  --reading: 720px;
}

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

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

.site-body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}

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

p {
  margin: 0;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--primary-dark);
}

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

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

table {
  border-collapse: collapse;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   layout · shell
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--card);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 24px;
}

.site-main {
  display: block;
  width: 100%;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px 24px 56px;
}

.home-main {
  padding-bottom: 8px;
}

/* ============================================================
   layout · header / nav
   ============================================================ */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.brand:hover {
  color: var(--primary);
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  border-radius: var(--radius-sm);
  background-color: var(--primary);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  background-color: var(--card);
}

.brand-text {
  white-space: nowrap;
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 15px;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--primary);
  background-color: #eef7f7;
}

.nav-link.is-current {
  color: var(--primary);
  font-weight: 700;
  background-color: #e6f4f4;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background-color: var(--ink);
}

/* ============================================================
   layout · breadcrumb / page header
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

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

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

.breadcrumb-sep {
  color: #a9bcc6;
}

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

.page-header {
  max-width: var(--reading);
  padding: 18px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.page-title {
  font-size: 32px;
  line-height: 1.35;
}

.page-description {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: 16px;
}

/* ============================================================
   layout · footer
   ============================================================ */
.site-footer {
  margin-top: 48px;
  background-color: var(--card);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: 32px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-brand-name {
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
}

.footer-brand-desc {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.footer-col-title {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.footer-list {
  margin-top: 12px;
}

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

.footer-list a {
  display: inline-block;
  min-height: 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
}

.footer-copyright {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 24px;
  color: var(--ink-soft);
  font-size: 13px;
}

/* ============================================================
   components · generic
   ============================================================ */
.section {
  padding: 44px 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: var(--reading);
  margin-bottom: 26px;
}

.section-title {
  font-size: 22px;
}

.section-text,
.section-desc,
.section-lead,
.section-intro {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.subsection-title {
  font-size: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #ffffff;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--primary);
  background-color: #eef7f7;
  color: var(--primary-dark);
}

.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background-color: #eef7f7;
  color: var(--primary);
  font-size: 12px;
  line-height: 1.7;
}

.tag-update {
  background-color: #fdf0ec;
  color: var(--warm);
}

/* ============================================================
   components · tables
   ============================================================ */
.field-table {
  width: 100%;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.field-table th,
.field-table td {
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.field-table thead th {
  background-color: #f1f8f8;
  color: var(--ink);
  font-weight: 700;
  white-space: nowrap;
}

.field-table tbody tr:last-child th,
.field-table tbody tr:last-child td {
  border-bottom: 0;
}

.field-table tbody th {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

.field-table td {
  color: var(--ink-soft);
}

/* ============================================================
   components · related links
   ============================================================ */
.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-item a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  color: var(--primary);
  font-size: 15px;
}

.related-item a:hover,
.related-item a:focus-visible {
  border-color: var(--primary);
  background-color: #eef7f7;
  color: var(--primary-dark);
}

/* ============================================================
   pages · index
   ============================================================ */
.site-notice {
  padding: 9px 24px;
  background-color: #eef7f7;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
  text-align: center;
}

.hero {
  padding: 40px 0 8px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr);
  gap: 40px;
  align-items: start;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-lead {
  min-width: 0;
}

.hero-eyebrow {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  background-color: #e6f4f4;
  color: var(--primary);
  font-size: 13px;
}

.hero-title {
  margin-top: 16px;
  font-size: 32px;
  line-height: 1.35;
}

.hero-text {
  margin-top: 14px;
  max-width: 620px;
  color: var(--ink-soft);
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-figure {
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.hero-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.hero-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  box-shadow: var(--shadow);
}

.hero-panel-title {
  font-size: 18px;
}

.hero-panel-text {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
}

.hero-panel-list {
  margin-top: 18px;
}

.hero-panel-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.hero-panel-label {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.hero-panel-desc {
  color: var(--ink-soft);
  font-size: 13px;
  text-align: right;
}

.hero-panel-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

/* 题材分类索引 */
.genre-list {
  border-top: 1px solid var(--line);
}

.genre-row {
  display: grid;
  grid-template-columns: 72px minmax(120px, 180px) minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.genre-code {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

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

.genre-scope {
  color: var(--ink-soft);
  font-size: 14px;
}

.genre-pick {
  font-size: 14px;
}

/* 封面墙与最近更新 */
.shelf-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
  gap: 40px;
  align-items: start;
}

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

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.cover-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.cover-card:hover,
.cover-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}

.cover-figure {
  overflow: hidden;
  background-color: #eef4f5;
}

.cover-figure img {
  width: 100%;
  height: 168px;
  object-fit: cover;
}

.cover-name {
  padding: 12px 14px 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.cover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  padding: 8px 14px 14px;
}

.shelf-aside {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.update-list {
  margin-top: 14px;
}

.update-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.update-date {
  grid-row: 1 / span 2;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.update-name {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

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

.update-note {
  grid-column: 2;
  color: var(--ink-soft);
  font-size: 13px;
}

.shelf-aside-foot {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

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

.rank-row {
  display: grid;
  grid-template-columns: 52px minmax(140px, 220px) minmax(100px, 150px) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
}

.rank-no {
  color: var(--warm);
  font-size: 16px;
  font-weight: 700;
}

.rank-name {
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.rank-genre {
  color: var(--accent);
  font-size: 13px;
}

.rank-reason {
  color: var(--ink-soft);
  font-size: 14px;
}

/* 阅读说明摘要 */
.guide-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
}

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

.guide-layout .step-list {
  margin-top: 16px;
}

.guide-layout .step-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.guide-layout .step-no {
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: #e6f4f4;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

.guide-layout .step-name {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.guide-layout .step-desc {
  grid-column: 2;
  color: var(--ink-soft);
  font-size: 14px;
}

.guide-boundary {
  margin-top: 20px;
}

/* 站内栏目索引 */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.channel-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 108px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.channel-card:hover,
.channel-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}

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

.channel-desc {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

/* ============================================================
   pages · inner shared sections
   ============================================================ */
.content-section {
  margin-bottom: 44px;
}

.content-section > .section-title {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.content-section > .section-desc,
.content-section > .section-intro,
.content-section > .section-lead {
  margin-top: 14px;
}

.content-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.content-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 16px;
  color: var(--ink-soft);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.content-media-inline {
  margin-top: 18px;
}

/* ============================================================
   pages · timetable
   ============================================================ */
.category-rows {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.category-row {
  border-bottom: 1px solid var(--line);
}

.category-item {
  display: grid;
  grid-template-columns: 84px minmax(140px, 190px) minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: baseline;
  padding: 18px 4px;
}

.category-code {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.category-name {
  font-size: 17px;
}

.category-cover {
  color: var(--ink-soft);
  font-size: 14px;
}

.category-samples {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 14px;
}

.field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin-top: 20px;
}

.field-table-wrap {
  min-width: 0;
}

.field-table-wrap .field-table {
  margin-top: 14px;
}

.field-order {
  min-width: 0;
}

.order-list {
  margin-top: 14px;
  counter-reset: order;
}

.order-item {
  position: relative;
  padding: 10px 0 10px 30px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}

.order-item::before {
  counter-increment: order;
  content: counter(order);
  position: absolute;
  left: 0;
  top: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #e6f4f4;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.field-note {
  margin-top: 16px;
  font-size: 14px;
}

.category-figure {
  margin-top: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.category-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.category-figure-caption {
  padding: 10px 16px;
  color: var(--ink-soft);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.section-related {
  margin-bottom: 0;
}

/* ============================================================
   pages · topics
   ============================================================ */
.topics-section {
  margin-bottom: 44px;
}

.topic-item {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.topic-item:first-of-type {
  padding-top: 20px;
}

.topic-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: #eef4f5;
}

.topic-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

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

.topic-name {
  font-size: 19px;
}

.topic-judgement {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.topic-picks,
.topic-order {
  margin-top: 18px;
}

.topic-subtitle {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.topic-pick-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 10px;
}

.topic-pick-list li {
  padding: 3px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  color: var(--ink-soft);
  font-size: 13px;
}

.topic-order-list {
  margin-top: 10px;
  counter-reset: topic-order;
}

.topic-order-list li {
  position: relative;
  padding: 6px 0 6px 26px;
  color: var(--ink-soft);
  font-size: 14px;
}

.topic-order-list li::before {
  counter-increment: topic-order;
  content: counter(topic-order);
  position: absolute;
  left: 0;
  top: 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #e6f4f4;
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
}

.topics-notes {
  margin-bottom: 44px;
}

.topics-notes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
  margin-top: 20px;
}

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

.notes-title {
  font-size: 17px;
}

.notes-col p {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.notes-list {
  margin-top: 12px;
}

.notes-list li {
  position: relative;
  padding: 6px 0 6px 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.notes-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.related-section {
  margin-bottom: 0;
}

/* ============================================================
   pages · guide
   ============================================================ */
.guide-steps {
  margin-bottom: 44px;
}

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

.guide-steps .step-item {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.guide-steps .step-name {
  font-size: 16px;
}

.guide-steps .step-check {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
}

.guide-steps .step-action {
  margin-top: 12px;
  font-size: 14px;
}

.guide-figure {
  margin-top: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
}

.guide-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 10px 16px;
  color: var(--ink-soft);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.guide-reference {
  margin-bottom: 44px;
}

.guide-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin-top: 20px;
}

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

.guide-col-fields .field-table {
  margin-top: 14px;
}

.guide-col-boundary {
  min-width: 0;
}

.boundary-text {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 15px;
}

.boundary-list {
  margin-top: 14px;
}

.boundary-item {
  position: relative;
  padding: 8px 0 8px 18px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--warm);
}

.guide-faq {
  margin-bottom: 44px;
}

.faq-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
  background-color: var(--card);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 14px 18px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--primary);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}

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

.faq-answer {
  padding: 0 18px 16px;
}

.faq-answer p {
  color: var(--ink-soft);
  font-size: 15px;
}

.related-links {
  margin-bottom: 0;
}

/* ============================================================
   pages · records
   ============================================================ */
.records-section {
  margin-bottom: 44px;
}

.records-month {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.records-month-head {
  margin-bottom: 14px;
}

.records-month-title {
  font-size: 19px;
}

.records-month-note {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

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

.records-item {
  display: grid;
  grid-template-columns: 72px minmax(120px, 180px) minmax(0, 1fr);
  gap: 6px 18px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.records-item:last-child {
  border-bottom: 0;
}

.records-type {
  display: inline-block;
  padding: 1px 10px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.8;
  text-align: center;
}

.records-type-add {
  background-color: #e6f4f4;
  color: var(--primary);
}

.records-type-edit {
  background-color: #eef2fa;
  color: #4a6fa5;
}

.records-type-remove {
  background-color: #fdf0ec;
  color: var(--warm);
}

.records-topic {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.records-reason {
  color: var(--ink-soft);
  font-size: 14px;
}

.records-notes {
  margin-bottom: 44px;
}

.notes-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
  margin-top: 20px;
}

.notes-col-title {
  font-size: 17px;
}

.notes-columns .notes-col p {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.related-entry {
  margin-bottom: 0;
}

/* ============================================================
   pages · 404
   ============================================================ */
.error-main {
  display: flex;
  justify-content: center;
  padding: 64px 24px 80px;
}

.error-panel {
  width: 100%;
  max-width: 640px;
  padding: 40px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--card);
  box-shadow: var(--shadow);
  text-align: left;
}

.error-code {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

.error-title {
  margin-top: 12px;
  font-size: 32px;
}

.error-desc {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 16px;
}

.error-list {
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.error-list li {
  position: relative;
  padding: 10px 0 10px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 15px;
}

.error-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 1080px) {
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

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

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

  .guide-steps .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 18px;
  }

  .site-nav {
    flex: 1 1 100%;
    order: 3;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
    border-top: 1px solid var(--line);
  }

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

  .nav-link {
    width: 100%;
    padding: 0 6px;
    border-radius: 0;
  }

  .inner-main {
    padding: 16px 18px 44px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 0 18px;
  }

  .hero-figure img {
    height: 220px;
  }

  .shelf-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .field-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .guide-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .topics-notes-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .notes-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .genre-row {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 6px 14px;
  }

  .genre-scope,
  .genre-pick {
    grid-column: 2;
  }

  .category-item {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 6px 14px;
  }

  .category-cover,
  .category-samples {
    grid-column: 2;
  }

  .rank-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 4px 14px;
  }

  .rank-genre,
  .rank-reason {
    grid-column: 2;
  }

  .topic-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .records-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 4px 14px;
  }

  .records-reason {
    grid-column: 2;
  }

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

@media (max-width: 560px) {
  .page-title,
  .hero-title,
  .error-title {
    font-size: 26px;
  }

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

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

  .cover-figure img {
    height: 190px;
  }

  .guide-steps .step-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .hero-panel-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .hero-panel-desc {
    text-align: left;
  }

  .update-item {
    grid-template-columns: 78px minmax(0, 1fr);
  }

  .category-figure img,
  .guide-figure img,
  .hero-figure img {
    height: 200px;
  }

  .error-panel {
    padding: 28px 20px;
  }
}