/* ==========================================================================
   汗汗漫画 · 全站样式
   base → layout → components → pages → responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版、通用元素
   -------------------------------------------------------------------------- */

:root {
  --bg-page: #f7f9fa;
  --bg-panel: #ffffff;
  --ink: #1c2b36;
  --ink-soft: #5b6b76;
  --accent: #0f8a7a;
  --accent-2: #2f6fb0;
  --line: #e3e9ec;
  --footer-bg: #12222c;
  --footer-ink: #cfd9de;
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1180px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
}

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

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

body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 12px;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.35;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin: 0 0 12px;
}

ul,
ol {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

time,
code {
  font-family: var(--font-mono);
  font-size: 14px;
}

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

/* --------------------------------------------------------------------------
   layout：站点骨架（顶部事实条、页头、主导航、主容器、面包屑、页标题、页脚）
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg-page);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.fact-bar {
  margin: 0;
  padding: 8px 24px;
  background-color: #eef3f5;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background-color: #eef3f5;
  color: var(--accent);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--accent);
  font-weight: 600;
  background-color: #e6f2ef;
}

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

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

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.inner-main {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px 24px 56px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

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

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent);
}

.breadcrumb-sep {
  color: #a9b6be;
}

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

.page-header {
  margin: 0 0 32px;
  padding: 0 0 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
}

.page-description {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.site-footer {
  background-color: var(--footer-bg);
  color: var(--footer-ink);
  font-size: 14px;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

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

.footer-logo {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
}

.footer-desc {
  margin: 0;
  color: #9fb0ba;
  line-height: 1.7;
}

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

.footer-heading {
  margin: 0 0 12px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
}

.footer-list li {
  margin: 0 0 8px;
}

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

.footer-list a:hover,
.footer-list a:focus-visible {
  color: #6fd6c4;
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid #24373f;
  color: #8798a2;
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   components：标签、按钮、封面卡、列表行、字段表
   -------------------------------------------------------------------------- */

.tag {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
}

.tag-genre {
  background-color: #e6f2ef;
  color: #0b6a5e;
}

.tag-status {
  background-color: #e8eff7;
  color: #245a91;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.5;
  text-align: center;
  border: 1px solid transparent;
  cursor: pointer;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #0b6f62;
  border-color: #0b6f62;
  color: #ffffff;
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--accent-2);
  border-color: var(--line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--accent-2);
  color: var(--accent);
  text-decoration: none;
}

.cover-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.cover-card:hover {
  border-color: #b9cdc8;
  background-color: #fbfdfd;
}

.cover-figure {
  margin: 0;
  aspect-ratio: 3 / 4;
  background-color: #eef3f5;
  overflow: hidden;
}

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

.cover-name,
.cover-title {
  margin: 12px 14px 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.cover-tags {
  margin: 0 14px 14px;
  line-height: 1.8;
}

.field-list {
  margin: 0;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(96px, 140px) minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.field-row:last-child {
  border-bottom: 0;
}

.field-name {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.field-desc {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  padding: 8px 0 40px;
  border-bottom: 1px solid var(--line);
}

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

.hero-title {
  margin: 0 0 16px;
  font-size: 34px;
  font-weight: 600;
  line-height: 1.35;
}

.hero-summary {
  margin: 0 0 24px;
  max-width: 560px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

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

.hero-figure {
  min-width: 0;
  margin: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section {
  padding: 40px 0 0;
}

.section-head {
  margin: 0 0 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  margin: 0 0 6px;
}

.section-desc {
  margin: 0;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 15px;
}

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

.direction-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.direction-index {
  margin: 0 0 6px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.direction-name {
  margin: 0 0 8px;
  font-size: 18px;
}

.direction-note {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.direction-figure {
  margin: auto 0 0;
}

.direction-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

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

.cover-card-feature {
  grid-column: span 2;
}

.cover-card-feature .cover-figure {
  aspect-ratio: 3 / 2;
}

.duo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.duo-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.duo-heading {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
}

.update-list {
  margin: 0;
}

.update-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) 84px;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

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

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

.update-name {
  font-weight: 600;
}

.update-genre {
  color: var(--accent-2);
  font-size: 13px;
}

.update-note {
  grid-column: 2 / -1;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.rank-list {
  margin: 0;
  padding: 0;
}

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

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

.rank-no {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.rank-name {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
}

.rank-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.duo-more,
.fields-more {
  margin: 16px 0 0;
  font-size: 14px;
}

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

.fields-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.fields-heading {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
}

.fields-text {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

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

.index-card {
  min-width: 0;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.index-name {
  margin: 0 0 8px;
  font-size: 16px;
}

.index-duty {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages：题材分类
   -------------------------------------------------------------------------- */

.section-title {
  margin: 0 0 8px;
  font-size: 22px;
}

.section-lead {
  margin: 0 0 22px;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 15px;
}

.category-sections {
  margin: 0 0 40px;
}

.category-block {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.category-block:last-child {
  border-bottom: 0;
}

.category-intro {
  min-width: 0;
}

.category-index {
  display: block;
  margin: 0 0 6px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.category-name {
  margin: 0 0 10px;
  font-size: 20px;
}

.category-trait {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.category-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  margin: 0;
  font-size: 14px;
}

.category-meta dt {
  color: var(--accent-2);
  font-family: var(--font-mono);
}

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

.category-covers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  min-width: 0;
}

.field-hint {
  margin: 0 0 40px;
  padding: 26px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

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

.field-hint-name {
  margin: 0 0 8px;
  font-size: 16px;
}

.field-hint-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.field-hint-link {
  margin: 20px 0 0;
  font-size: 14px;
}

.related-entry {
  padding: 26px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.related-item {
  min-width: 0;
}

.related-item a {
  display: block;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
}

.related-item a:hover,
.related-item a:focus-visible {
  border-color: #b9cdc8;
  background-color: #fbfdfd;
  text-decoration: none;
}

.related-name {
  display: block;
  font-weight: 600;
}

.related-desc {
  display: block;
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages：最近更新
   -------------------------------------------------------------------------- */

.update-intro {
  margin: 0 0 32px;
}

.update-media {
  margin: 18px 0 0;
}

.update-media img {
  width: 100%;
  max-width: 760px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.update-log {
  margin: 0 0 40px;
}

.update-group {
  margin: 0 0 24px;
  padding: 20px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.update-date {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
}

.update-rows {
  margin: 0;
}

.update-log .update-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 96px;
  gap: 10px 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

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

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

.update-row-title {
  font-weight: 600;
}

.update-row-tag {
  color: var(--accent-2);
  font-size: 13px;
}

.update-row-note {
  grid-column: 2 / -1;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.update-fields {
  margin: 0 0 40px;
  padding: 26px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.update-fields .field-list {
  display: grid;
  grid-template-columns: minmax(120px, 160px) minmax(0, 1fr);
  gap: 0 16px;
  margin: 0;
}

.update-fields .field-name {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.update-fields .field-desc {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.field-more {
  margin: 18px 0 0;
  font-size: 14px;
}

.update-boundary {
  margin: 0 0 40px;
}

.boundary-list {
  margin: 0;
}

.boundary-list li {
  position: relative;
  padding: 8px 0 8px 20px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent);
}

.update-related {
  padding: 26px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0;
}

.related-link {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 15px;
}

.related-link:hover,
.related-link:focus-visible {
  border-color: #b9cdc8;
  background-color: #fbfdfd;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   pages：人气榜单
   -------------------------------------------------------------------------- */

.ranking-criteria {
  margin: 0 0 32px;
  padding: 24px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.criteria-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  margin: 0;
}

.criteria-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.criteria-key {
  flex: 0 0 auto;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.ranking-list-section {
  margin: 0 0 40px;
}

.ranking-list {
  margin: 0;
}

.ranking-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

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

.ranking-item-top {
  grid-template-columns: 56px 96px minmax(0, 1fr);
}

.rank-number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}

.rank-cover {
  margin: 0;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #eef3f5;
}

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

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

.rank-meta {
  margin: 0 0 6px;
  line-height: 1.8;
}

.ranking-notes {
  margin: 0 0 40px;
}

.notes-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin: 0 0 24px;
}

.notes-col {
  min-width: 0;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.notes-col h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.notes-col p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.notes-figure {
  margin: 0;
}

.notes-figure img {
  width: 100%;
  max-width: 760px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.ranking-list-section + .ranking-notes + .related-entry {
  margin: 0;
}

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

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  gap: 32px;
  align-items: start;
}

.fields-layout {
  grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
}

.content-article {
  min-width: 0;
}

.fields-article {
  max-width: 760px;
}

.page-aside {
  min-width: 0;
}

.article-media {
  margin: 0 0 36px;
}

.field-figure {
  margin: 0;
}

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

.field-table-section {
  margin: 0 0 36px;
}

.field-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 15px;
}

.field-table th,
.field-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}

.field-table thead th {
  background-color: #eef3f5;
  font-weight: 600;
}

.field-table tbody th {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

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

.field-rule-section {
  margin: 0 0 36px;
}

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

.rule-card {
  min-width: 0;
  padding: 16px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rule-title {
  margin: 0 0 8px;
  font-size: 16px;
}

.rule-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.boundary-section {
  margin: 0 0 36px;
}

.boundary-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

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

.boundary-name {
  margin: 0 0 6px;
  font-size: 16px;
}

.boundary-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.path-section {
  margin: 0;
}

.path-list {
  margin: 0 0 24px;
  counter-reset: path;
}

.path-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

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

.path-step {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.path-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.feedback-note {
  padding: 20px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-title {
  margin: 0 0 8px;
  font-size: 16px;
}

.feedback-text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.aside-block {
  margin: 0 0 24px;
  padding: 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
}

.quick-list {
  margin: 0;
}

.quick-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

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

.field-code {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.quick-desc {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.aside-link-list {
  margin: 0;
}

.aside-link-list li {
  margin: 0 0 10px;
}

.aside-link-list a {
  display: block;
  font-size: 14px;
}

.aside-link-desc {
  display: block;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */

.error-main {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 64px;
}

.error-panel {
  padding: 32px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
}

.error-code {
  margin: 0 0 8px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.2;
}

.error-desc {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

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

.error-guide {
  margin: 32px 0 0;
}

.error-guide-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.error-guide-list li {
  min-width: 0;
}

.error-guide-list a {
  display: block;
  padding: 12px 14px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 15px;
}

.error-guide-list a:hover,
.error-guide-list a:focus-visible {
  border-color: #b9cdc8;
  background-color: #fbfdfd;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive：960px 与 640px 两档
   -------------------------------------------------------------------------- */

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
    order: 2;
  }

  .brand {
    order: 1;
  }

  .site-nav {
    order: 3;
    flex: 1 0 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    padding: 12px 10px;
    min-height: 44px;
  }

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

  .hero-title {
    font-size: 28px;
  }

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

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

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

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

  .category-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .field-hint-grid,
  .related-list,
  .notes-columns,
  .rule-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .fields-article {
    max-width: none;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .fact-bar {
    padding: 8px 16px;
    font-size: 13px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .home-main,
  .inner-main {
    padding: 20px 16px 40px;
  }

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

  .section {
    padding: 28px 0 0;
  }

  .hero-summary {
    font-size: 15px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-height: 44px;
  }

  .direction-grid,
  .coverwall-grid,
  .index-grid,
  .field-hint-grid,
  .related-list,
  .notes-columns,
  .rule-grid,
  .error-guide-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .cover-card-feature {
    grid-column: span 2;
  }

  .category-covers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

  .update-note,
  .update-row-note {
    grid-column: 1 / -1;
  }

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

  .ranking-item,
  .ranking-item-top {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
  }

  .ranking-item-top .rank-cover {
    grid-column: 2;
    max-width: 120px;
  }

  .ranking-item-top .rank-body {
    grid-column: 2;
  }

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

  .update-fields .field-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .update-fields .field-name {
    border-top: 1px solid var(--line);
    padding-bottom: 0;
  }

  .update-fields .field-desc {
    border-top: 0;
    padding-top: 4px;
  }

  .field-table {
    display: block;
    overflow-x: auto;
  }

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

  .error-main {
    padding: 32px 16px 48px;
  }

  .error-panel {
    padding: 22px;
  }

  .error-code {
    font-size: 32px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
    min-height: 44px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    padding: 14px 16px 24px;
  }

  .related-links {
    flex-direction: column;
    align-items: stretch;
  }

  .related-link {
    text-align: center;
    min-height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}