/* ==========================================================================
   漫画之家 jntdzh.com — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base — 变量、重置、基础排版
   -------------------------------------------------------------------------- */

:root {
  --ink: #111417;
  --paper: #ffffff;
  --tint: #f4f6f7;
  --brand: #2f6f8f;
  --brand-deep: #245870;
  --muted: #6b7580;
  --line: #d8dee2;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --radius: 6px;
  --radius-sm: 4px;
  --shell: 1180px;
  --reading: 760px;

  --space-1: 8px;
  --space-2: 14px;
  --space-3: 22px;
  --space-4: 34px;
  --space-5: 52px;
  --space-6: 72px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--brand-deep);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

figure {
  margin: 0;
}

strong {
  font-weight: 700;
}

time {
  font-variant-numeric: tabular-nums;
}

button {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   layout — 全站骨架：页头、导航、主容器、页脚
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand:hover {
  color: var(--ink);
  text-decoration: none;
}

.brand-slogan {
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
}

.nav-toggle::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 15px;
  height: 2px;
  background: var(--ink);
  box-shadow: 0 6px 0 var(--ink), 0 12px 0 var(--ink);
}

.nav-toggle:hover {
  border-color: var(--brand);
}

.site-nav {
  margin-left: auto;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--brand);
  background: var(--tint);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--brand);
  font-weight: 700;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px var(--space-6);
}

.inner-main {
  padding-top: var(--space-3);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

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

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

.breadcrumb-sep {
  color: var(--line);
}

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

.page-header {
  max-width: var(--reading);
  padding: var(--space-3) 0 var(--space-4);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-4);
}

.page-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.page-description {
  margin-top: var(--space-2);
  color: var(--muted);
  font-size: 16px;
}

.site-footer {
  flex: 0 0 auto;
  background: var(--tint);
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: var(--space-3) 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  font-size: 13px;
  color: var(--muted);
}

.footer-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--ink);
}

.footer-brand strong {
  font-size: 15px;
}

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

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

.footer-nav a {
  color: var(--brand);
  min-height: 24px;
}

.footer-note {
  flex: 1 1 220px;
  min-width: 180px;
  color: var(--muted);
}

.footer-copy {
  color: var(--muted);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   components — 通用区块、标签、列表行、封面卡、折叠面板
   -------------------------------------------------------------------------- */

.section {
  padding: var(--space-5) 0 0;
}

.section + .section {
  border-top: 1px solid var(--line);
  margin-top: var(--space-5);
}

.section-head {
  max-width: var(--reading);
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: 24px;
  font-weight: 700;
}

.section-desc,
.section-lead,
.section-intro {
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}

.section-more {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: var(--space-2);
  font-size: 15px;
  font-weight: 500;
}

.tag {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--tint);
  color: var(--brand);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.7;
  white-space: nowrap;
}

.field-columns,
.path-columns,
.boundary-columns,
.meaning-columns,
.guide-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.field-col,
.path-col,
.path-column,
.boundary-col,
.meaning-col,
.guide-column,
.field-column {
  min-width: 0;
  padding: var(--space-3);
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.field-col-title,
.path-title,
.path-name,
.path-subtitle,
.boundary-title,
.meaning-subtitle,
.field-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.field-list li,
.boundary-list li,
.meaning-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 15px;
  color: var(--ink);
}

.field-list li::before,
.boundary-list li::before,
.meaning-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

.field-list li strong {
  display: inline-block;
  min-width: 62px;
  margin-right: 6px;
  color: var(--ink);
}

.field-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  font-size: 15px;
  font-weight: 500;
}

.cover-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.cover-card:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
}

.cover-media {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--tint);
  border-radius: var(--radius-sm);
}

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

.cover-name {
  display: block;
  margin-top: 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

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

.cover-state,
.cover-status {
  color: var(--muted);
  font-size: 12px;
}

.cover-tag {
  display: inline-block;
  margin-top: 6px;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--tint);
  color: var(--brand);
  font-size: 12px;
  line-height: 1.7;
}

.update-row,
.rank-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.update-row:last-child,
.rank-row:last-child {
  border-bottom: 0;
}

.update-date {
  min-width: 96px;
  color: var(--muted);
  font-size: 13px;
}

.update-name,
.rank-name {
  font-weight: 600;
  color: var(--ink);
}

.update-note,
.rank-note {
  flex: 1 1 180px;
  min-width: 0;
  color: var(--muted);
  font-size: 14px;
}

.rank-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 24px;
  padding: 0 6px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
}

.rank-list .rank-row:nth-child(n + 4) .rank-no {
  background: var(--tint);
  color: var(--brand);
  border: 1px solid var(--line);
}

/* FAQ 折叠面板 */
.faq-list {
  margin-top: var(--space-3);
  border-top: 1px solid var(--line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 34px 12px 0;
  position: relative;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  margin-top: -3px;
}

.faq-answer {
  padding: 0 0 16px;
  max-width: var(--reading);
  color: var(--muted);
  font-size: 15px;
}

/* 滚动进入视口的轻量淡入 */
.reveal {
  animation: reveal-in 0.5s ease both;
}

@keyframes reveal-in {
  from {
    transform: translateY(10px);
  }
  to {
    transform: translateY(0);
  }
}

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

  .cover-card,
  .faq-question::after {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   pages — 首页
   -------------------------------------------------------------------------- */

.fact-bar {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 10px 24px 0;
  color: var(--muted);
  font-size: 13px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-4);
  align-items: start;
  padding: var(--space-4) 0 var(--space-5);
  border-bottom: 1px solid var(--line);
}

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

.hero-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.hero-lead {
  margin-top: var(--space-2);
  max-width: 560px;
  color: var(--muted);
  font-size: 16px;
}

.hero-paths {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

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

.hero-path a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 100%;
  padding: 14px;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease;
}

.hero-path a:hover {
  border-color: var(--brand);
  text-decoration: none;
}

.hero-path a strong {
  color: var(--ink);
  font-size: 15px;
}

.hero-path a span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

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

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--tint);
}

.hero-caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
}

.topic-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--space-3);
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.topic-name {
  font-size: 18px;
  font-weight: 700;
}

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

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

.topic-link {
  margin-top: auto;
  padding-top: var(--space-2);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.section-duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.section-duo .section {
  padding-top: 0;
}

.section-duo .section + .section {
  border-top: 0;
  margin-top: 0;
}

.updates-brief,
.ranking-brief {
  min-width: 0;
}

.field-brief .field-columns {
  gap: var(--space-3);
}

.site-index .index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-2);
}

.index-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 100%;
  padding: 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.index-item:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  text-decoration: none;
}

.index-item strong {
  color: var(--ink);
  font-size: 15px;
}

.index-item span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   pages — 题材分类
   -------------------------------------------------------------------------- */

.topic-directory {
  padding-top: var(--space-4);
}

.directory-nav {
  margin-top: var(--space-2);
}

.directory-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.directory-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  min-width: 0;
  padding: 12px 14px;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.directory-item a {
  font-size: 15px;
  font-weight: 600;
}

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

.topic-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.topic-block-text {
  min-width: 0;
}

.topic-block-media {
  min-width: 0;
}

.topic-block-media .topic-subtitle {
  margin-bottom: var(--space-2);
}

.topic-block-media .cover-card {
  display: inline-flex;
  width: calc(50% - 8px);
  margin: 0 12px 12px 0;
  vertical-align: top;
}

.topic-block-media .cover-card:nth-of-type(2n) {
  margin-right: 0;
}

.topic-block-media .cover-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--tint);
}

.topic-block-media .cover-card figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
}

.topic-block-media .cover-name {
  margin-top: 0;
  font-size: 14px;
}

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

.topic-subtitle {
  margin-top: var(--space-3);
  font-size: 17px;
  font-weight: 700;
}

.topic-points {
  margin-top: 10px;
}

.topic-points li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

.topic-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

.topic-path {
  margin-top: var(--space-2);
  font-size: 14px;
}

.topic-path a {
  margin-right: 14px;
  font-weight: 500;
  white-space: nowrap;
}

.topic-guide {
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.topic-guide .section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.guide-column p {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 15px;
}

.guide-column p a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-right: 12px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages — 最近更新
   -------------------------------------------------------------------------- */

.update-scope .scope-list {
  margin-top: var(--space-2);
}

.scope-item {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  max-width: var(--reading);
  color: var(--ink);
  font-size: 15px;
}

.scope-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

.update-groups {
  margin-top: var(--space-3);
}

.update-group {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.update-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.update-group .update-date {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.update-rows {
  margin-top: 8px;
}

.update-row .update-topic {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--tint);
  color: var(--brand);
  font-size: 12px;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.focus-card {
  min-width: 0;
  padding: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.focus-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--tint);
}

.focus-card figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 10px;
}

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

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

.update-fields .field-column p {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 15px;
}

.update-paths .path-column p {
  color: var(--muted);
  font-size: 15px;
}

.update-paths .path-column p a {
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages — 人气榜单
   -------------------------------------------------------------------------- */

.method-list {
  margin-top: var(--space-2);
}

.method-item {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  max-width: var(--reading);
  color: var(--ink);
  font-size: 15px;
}

.method-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

.ranking-list {
  margin-top: var(--space-3);
  border-top: 1px solid var(--line);
}

.ranking-row {
  display: grid;
  grid-template-columns: 44px 96px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--line);
}

.ranking-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 30px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
}

.ranking-list .ranking-row:nth-child(n + 4) .ranking-rank {
  background: var(--tint);
  color: var(--brand);
  border: 1px solid var(--line);
}

.ranking-cover {
  width: 96px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.ranking-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.ranking-name {
  font-size: 17px;
  font-weight: 700;
}

.ranking-tag {
  display: inline-block;
  margin-top: 6px;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--tint);
  color: var(--brand);
  font-size: 12px;
}

.ranking-note {
  margin-top: 8px;
  max-width: 620px;
  color: var(--muted);
  font-size: 14px;
}

.ranking-paths .path-col p {
  color: var(--muted);
  font-size: 15px;
}

.ranking-paths .path-col p a {
  font-weight: 500;
}

.path-foot {
  margin-top: var(--space-3);
  font-size: 14px;
}

.path-foot a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-right: 16px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   pages — 条目字段说明
   -------------------------------------------------------------------------- */

.field-name-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-2);
}

.field-name-item {
  min-width: 0;
}

.field-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.field-figure {
  margin-top: var(--space-3);
  max-width: var(--reading);
}

.field-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--tint);
}

.field-figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.field-entry {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.field-entry:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.field-entry-title {
  font-size: 18px;
  font-weight: 700;
}

.field-entry-text {
  margin-top: 8px;
  max-width: var(--reading);
  color: var(--ink);
  font-size: 15px;
}

.field-meta {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 6px var(--space-3);
  margin: var(--space-2) 0 0;
  max-width: var(--reading);
  font-size: 14px;
}

.field-meta dt {
  color: var(--muted);
}

.field-meta dd {
  margin: 0;
  color: var(--ink);
}

.rule-list {
  margin-top: var(--space-2);
  counter-reset: field-rule;
}

.rule-item {
  position: relative;
  padding-left: 34px;
  margin-bottom: 12px;
  max-width: var(--reading);
  color: var(--muted);
  font-size: 15px;
}

.rule-item::before {
  counter-increment: field-rule;
  content: counter(field-rule);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
}

.rule-item strong {
  color: var(--ink);
  margin-right: 6px;
}

.boundary-include {
  border-left: 3px solid var(--brand);
}

.boundary-exclude {
  border-left: 3px solid var(--line);
}

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

.path-text {
  color: var(--muted);
  font-size: 15px;
}

.path-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 6px;
  font-size: 15px;
  font-weight: 500;
}

.section-related {
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.related-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  min-width: 0;
  padding: 12px 14px;
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-item a {
  font-size: 15px;
  font-weight: 600;
}

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

/* --------------------------------------------------------------------------
   pages — 404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) 24px;
}

.error-block {
  width: 100%;
  max-width: 620px;
  padding: var(--space-4);
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  color: var(--brand);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.1;
}

.error-block h1 {
  margin-top: 8px;
  font-size: 26px;
  font-weight: 700;
}

.error-text {
  margin-top: var(--space-2);
  color: var(--muted);
  font-size: 15px;
}

.error-paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: var(--space-3);
}

.error-paths li {
  min-width: 0;
}

.error-paths a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
}

.error-paths a:hover {
  border-color: var(--brand);
  text-decoration: none;
}

.error-action {
  margin-top: var(--space-3);
}

.error-home {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
}

.error-home:hover {
  background: var(--brand-deep);
  color: #fff;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive — 1024 / 768 / 480
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .hero-media {
    order: -1;
  }

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

  .cover-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
  }

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

  .topic-block {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

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

  .ranking-row {
    grid-template-columns: 40px 84px minmax(0, 1fr);
    gap: var(--space-2);
  }

  .ranking-cover {
    width: 84px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 18px;
    flex-wrap: wrap;
  }

  .brand {
    font-size: 18px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    flex: 1 0 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 10px;
    border-top: 1px solid var(--line);
  }

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

  .nav-link {
    padding: 0 4px;
    min-height: 46px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .nav-list li:last-child .nav-link {
    border-bottom: 0;
  }

  .site-main {
    padding: 0 18px var(--space-5);
  }

  .fact-bar {
    padding: 10px 18px 0;
  }

  .hero {
    padding: var(--space-3) 0 var(--space-4);
  }

  .hero-title,
  .page-title {
    font-size: 26px;
  }

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

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

  .section-duo {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

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

  .field-columns,
  .path-columns,
  .boundary-columns,
  .meaning-columns,
  .guide-columns,
  .directory-list,
  .related-list,
  .section-faq .path-columns {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .footer-inner {
    padding: var(--space-3) 18px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .footer-copy {
    white-space: normal;
  }

  .error-main {
    padding: var(--space-5) 18px;
  }
}

@media (max-width: 480px) {
  .site-main {
    padding: 0 14px var(--space-4);
  }

  .fact-bar {
    padding: 8px 14px 0;
  }

  .header-inner {
    padding: 10px 14px;
  }

  .brand-slogan {
    display: none;
  }

  .hero-title,
  .page-title {
    font-size: 24px;
  }

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

  .topic-block-media .cover-card {
    width: 100%;
    margin-right: 0;
  }

  .update-date {
    min-width: 0;
  }

  .update-row,
  .rank-row {
    gap: 4px 10px;
  }

  .ranking-row {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .ranking-cover {
    width: 100%;
    max-width: 120px;
    grid-column: 2;
  }

  .ranking-body {
    grid-column: 2;
  }

  .field-meta {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .field-meta dd {
    margin-bottom: 8px;
  }

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

  .footer-inner {
    padding: var(--space-2) 14px;
  }
}