/* ==========================================================================
   风车动漫 · 全站样式
   分组：base / layout / header / components / pages / footer / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */
:root {
  --bg: #f7f5f1;
  --ink: #1f1c18;
  --ink-soft: #5c554c;
  --ink-faint: #8b8378;
  --accent: #8a2b2b;
  --accent-soft: #f0e4e0;
  --line: #d9d2c7;
  --line-soft: #e7e1d7;
  --panel: #fdfbf8;
  --serif: Georgia, "Songti SC", "SimSun", "Noto Serif SC", serif;
  --sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --radius: 6px;
  --wrap: 1120px;
}

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0;
}

p {
  margin: 0 0 0.9em;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 43, 43, 0.28);
  transition: color 0.18s ease, border-color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: #6d1f1f;
  border-bottom-color: #6d1f1f;
}

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

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

figure {
  margin: 0;
}

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

dl,
dd,
dt {
  margin: 0;
}

summary {
  cursor: pointer;
}

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

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

.home-main,
.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.home-main > section,
.inner-main > section,
.inner-main > div {
  padding-top: 48px;
}

.inner-main > .breadcrumb {
  padding-top: 20px;
}

.inner-main > .page-header {
  padding-top: 18px;
}

.section-head {
  margin-bottom: 22px;
}

.section-head h2,
.section-title {
  font-size: 24px;
  line-height: 1.4;
}

.section-desc,
.section-lead,
.section-intro {
  margin: 8px 0 0;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

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

/* --------------------------------------------------------------------------
   header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  flex: 0 0 auto;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: none;
  padding: 6px 0;
}

.brand::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  vertical-align: middle;
  background: var(--accent);
  border-radius: 2px;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 15px;
  color: var(--ink);
  border-bottom: none;
  border-radius: var(--radius);
}

.nav-list a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.nav-list a.is-current {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 2px solid var(--accent);
  border-radius: 0;
}

.nav-note {
  margin: 0;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ink-faint);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   components
   -------------------------------------------------------------------------- */

/* 首屏 */
.home-hero {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 40px;
  align-items: start;
  padding-top: 44px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 460px;
}

.hero-kicker {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.hero-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.hero-paths {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-paths li {
  display: block;
}

.path-link {
  display: inline-block;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--accent);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.path-link:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.hero-visual {
  display: grid;
  gap: 10px;
}

.hero-visual img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.hero-visual figcaption {
  padding-top: 2px;
}

/* 题材方向总览 */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.topic-cell {
  padding: 18px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
}

.topic-index {
  display: block;
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-faint);
}

.topic-name {
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 8px;
}

.topic-feature {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.topic-sample {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
}

.topic-sample a {
  border-bottom: 1px solid rgba(138, 43, 43, 0.28);
}

/* 最近更新 + 封面墙 */
.home-updates {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 40px;
  align-items: start;
}

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

.update-group {
  padding: 14px 0 6px;
  border-bottom: 1px solid var(--line-soft);
}

.update-date {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.update-rows {
  display: grid;
  gap: 2px;
}

.update-row {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 8px 6px;
  border-radius: var(--radius);
  font-size: 14px;
}

.update-row:hover {
  background: var(--accent-soft);
}

.update-title {
  color: var(--ink);
  font-weight: 600;
}

.update-topic {
  color: var(--ink-soft);
}

.update-type {
  color: var(--ink-faint);
  text-align: right;
}

.cover-column {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.cover-title {
  font-size: 18px;
  margin-bottom: 14px;
}

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

.cover-card {
  display: grid;
  gap: 8px;
  padding: 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.cover-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 10px rgba(31, 28, 24, 0.08);
}

.cover-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--line-soft);
}

.cover-card figcaption {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
}

/* 人气榜单 + 字段口径 */
.home-ranking {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 40px;
  align-items: start;
}

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

.rank-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1.6fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 6px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

.rank-no {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--accent);
}

.rank-title {
  font-weight: 600;
  color: var(--ink);
}

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

.fields-column {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.fields-column h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

.fields-intro {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.fields-summary {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 8px 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
}

.fields-summary dt {
  font-weight: 600;
  color: var(--ink);
}

.fields-summary dd {
  color: var(--ink-soft);
  line-height: 1.7;
}

.fields-more {
  margin-top: 16px;
  font-size: 14px;
}

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

.index-cell {
  padding: 16px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.index-cell a {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  border-bottom: none;
}

.index-cell a:hover {
  color: var(--accent);
}

.index-cell p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 面包屑 */
.breadcrumb {
  font-size: 13px;
  color: var(--ink-faint);
}

.breadcrumb a {
  color: var(--ink-soft);
  border-bottom: none;
}

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--line);
}

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

/* 页面标题区 */
.page-header {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 12px;
}

.page-description {
  margin: 0;
  max-width: 820px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 通用两栏内页布局：主内容在前，aside 在后 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 40px;
  align-items: start;
}

.page-layout > aside {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.aside-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.aside-subtitle {
  font-size: 16px;
  margin: 18px 0 8px;
}

/* --------------------------------------------------------------------------
   pages
   -------------------------------------------------------------------------- */

/* 题材分类页 */
.topic-groups .section-title {
  margin-bottom: 8px;
}

.topic-block {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 28px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-soft);
}

.topic-media img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.topic-body .topic-index {
  margin-bottom: 6px;
}

.topic-body .topic-name {
  font-size: 20px;
  margin-bottom: 10px;
}

.topic-body .topic-feature {
  font-size: 15px;
  line-height: 1.8;
}

.topic-items {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}

.topic-items li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
}

.item-title {
  font-weight: 600;
  color: var(--ink);
}

.item-note {
  color: var(--ink-soft);
}

.topic-path {
  margin: 0;
  font-size: 14px;
}

.reading-path {
  padding-top: 44px;
}

.path-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.path-list li {
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
}

/* 最近更新页 */
.updates-list-block .section-head {
  margin-bottom: 14px;
}

.updates-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  margin-bottom: 4px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--ink-soft);
  position: sticky;
  top: 68px;
}

.toolbar-label {
  font-weight: 600;
  color: var(--ink);
}

.toolbar-meta {
  color: var(--ink-faint);
}

.updates-list-block .update-group {
  padding: 16px 0 8px;
}

.updates-list-block .update-date {
  font-size: 16px;
}

.updates-list-block .update-row {
  grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr) minmax(0, 1fr);
}

.updates-aside {
  display: grid;
  gap: 16px;
}

.updates-figure img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.updates-figure figcaption {
  padding-top: 6px;
}

.aside-guide {
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-guide h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.guide-steps {
  counter-reset: guide;
  display: grid;
  gap: 10px;
}

.guide-steps li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.guide-steps li::before {
  counter-increment: guide;
  content: counter(guide);
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  line-height: 20px;
  text-align: center;
  font-size: 12px;
  color: #fff;
  background: var(--accent);
  border-radius: 4px;
}

.aside-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 14px;
}

.updates-method .method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.method-item {
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.method-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

.method-note {
  margin-top: 18px;
  font-size: 14px;
}

/* 人气榜单页 */
.ranking-list {
  border-top: 1px solid var(--line);
}

.ranking-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--line-soft);
}

.rank-index {
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.2;
  color: var(--accent);
}

.ranking-entry h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.entry-meta {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--ink-faint);
}

.entry-tag {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 8px;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
}

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

.ranking-figure {
  margin-top: 22px;
}

.ranking-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.ranking-figure figcaption {
  padding-top: 6px;
}

.ranking-rule-aside > p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.rule-list {
  display: grid;
  gap: 8px;
}

.rule-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

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

.ranking-rule-aside .aside-links {
  flex-direction: column;
  gap: 8px;
}

.ranking-path-section {
  padding-top: 44px;
}

.ranking-path-section p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* 条目字段说明页 */
.fields-section .section-title {
  margin-bottom: 8px;
}

.fields-figure {
  margin: 18px 0 22px;
}

.fields-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.fields-figure figcaption {
  padding-top: 6px;
}

.field-list {
  display: grid;
  gap: 14px;
}

.field-item {
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.field-name {
  font-size: 17px;
  margin-bottom: 10px;
}

.field-meta {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 6px 14px;
  font-size: 14px;
}

.field-meta dt {
  font-weight: 600;
  color: var(--ink);
}

.field-meta dd {
  color: var(--ink-soft);
  line-height: 1.75;
}

.fields-note {
  margin-top: 18px;
  font-size: 14px;
}

.boundary-section .section-intro {
  margin-bottom: 16px;
}

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

.faq-item summary {
  padding: 14px 0;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item p {
  margin: 0 0 16px;
  max-width: 860px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-note {
  margin-top: 18px;
  font-size: 14px;
}

.path-section .path-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.path-item {
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.path-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.path-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.path-item .path-link {
  margin-top: 4px;
}

/* 404 */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.error-block {
  max-width: 720px;
}

.error-code {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.error-block h1 {
  font-size: 32px;
  line-height: 1.35;
  margin-bottom: 14px;
}

.error-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.error-actions li {
  display: block;
}

.error-btn {
  display: inline-block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-bottom: 1px solid var(--line);
}

.error-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

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

.error-btn-primary:hover {
  color: #fff;
  background: #6d1f1f;
  border-color: #6d1f1f;
}

/* --------------------------------------------------------------------------
   footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: 40px;
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-brand {
  max-width: 340px;
}

.footer-logo {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}

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

.footer-heading {
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--ink);
}

.footer-group ul {
  display: grid;
  gap: 8px;
}

.footer-group a {
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: none;
}

.footer-group a:hover {
  color: var(--accent);
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--ink-faint);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    gap: 12px;
  }

  .nav-toggle {
    display: block;
    margin-left: auto;
  }

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

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

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

  .nav-list a {
    display: block;
    padding: 12px 10px;
  }

  .nav-list a.is-current {
    border-bottom: none;
    background: var(--accent-soft);
  }

  .nav-note {
    display: block;
    margin-top: 8px;
    white-space: normal;
  }

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

  .hero-copy {
    max-width: none;
  }

  .hero-visual img {
    height: 240px;
  }

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

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

  .cover-column,
  .fields-column {
    padding-left: 0;
    border-left: none;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }

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

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

  .page-layout > aside {
    padding-left: 0;
    border-left: none;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }

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

  .topic-media img {
    height: 200px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
    line-height: 1.7;
  }

  .header-inner {
    padding: 10px 16px;
  }

  .brand {
    font-size: 19px;
  }

  .home-main,
  .inner-main {
    padding: 0 16px 48px;
  }

  .home-main > section,
  .inner-main > section,
  .inner-main > div {
    padding-top: 34px;
  }

  .inner-main > .breadcrumb {
    padding-top: 14px;
  }

  .inner-main > .page-header {
    padding-top: 12px;
  }

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

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

  .hero-visual img {
    height: 190px;
  }

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

  .update-row,
  .updates-list-block .update-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .update-type {
    text-align: left;
  }

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

  .cover-card img {
    height: 130px;
  }

  .rank-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 8px 10px;
  }

  .rank-note {
    grid-column: 2 / 3;
  }

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

  .topic-items li,
  .field-meta,
  .fields-summary {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

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

  .rank-index {
    font-size: 20px;
  }

  .updates-toolbar {
    position: static;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 30px 16px 20px;
  }

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

  .error-main {
    padding: 44px 16px 60px;
  }

  .error-block h1 {
    font-size: 24px;
  }
}