/* ==========================================================================
   歪歪漫画官网 - 全站样式表
   版本: 1.0
   说明: 全站统一视觉系统，洁净浅底、蓝绿辅助色、10px 卡片圆角
   ========================================================================== */

/* ==========================================================================
   1. Base - 基础变量、重置、全局元素
   ========================================================================== */

:root {
  /* 色彩体系 */
  --color-bg: #f7fafc;
  --color-surface: #ffffff;
  --color-text: #1f2d3d;
  --color-text-secondary: #5a6b7b;
  --color-text-muted: #8492a6;
  --color-blue: #2b6cb0;
  --color-blue-dark: #2c5282;
  --color-blue-light: #ebf4ff;
  --color-green: #38a169;
  --color-green-light: #f0fff4;
  --color-orange: #ed8936;
  --color-orange-light: #fffaf0;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;

  /* 布局尺寸 */
  --container-width: 1200px;
  --sidebar-width: 280px;
  --content-width: 880px;
  --gap-base: 24px;
  --gap-lg: 40px;

  /* 圆角与阴影 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(31, 45, 61, 0.06);
  --shadow-md: 0 4px 12px rgba(31, 45, 61, 0.08);
  --shadow-lg: 0 8px 24px rgba(31, 45, 61, 0.1);

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 13px;
  --line-height-base: 1.7;
  --line-height-heading: 1.4;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-blue-dark);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--line-height-heading);
  font-weight: 700;
  color: var(--color-text);
}

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

/* ==========================================================================
   2. Layout - 容器、页头、页脚、侧栏布局
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 页头 ---------- */

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--gap-base);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-base);
}

.brand-link {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.brand-tagline {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-blue);
  background-color: var(--color-blue-light);
}

.nav-link.is-current {
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  font-weight: 600;
}

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

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--gap-base) 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: 2px 0;
}

.footer-links a:hover {
  color: var(--color-blue);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-light);
  padding: 20px var(--gap-base);
  text-align: center;
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- 侧栏布局 ---------- */

.layout-shell,
.page-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  padding: var(--gap-lg) var(--gap-base);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-lg);
}

.sidebar-left {
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  align-items: start;
}

.sidebar-area,
.sidebar {
  min-width: 0;
}

.sidebar-inner {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: sticky;
  top: 84px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 16px;
}

/* 题材树 */

.tree-list,
.sidebar-tree,
.topic-tree {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tree-branch,
.tree-item,
.tree-parent {
  border-radius: var(--radius-sm);
}

.tree-node,
.tree-label {
  display: block;
  padding: 8px 10px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  cursor: default;
}

.tree-children {
  padding: 2px 0 6px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tree-children li a {
  display: block;
  padding: 6px 10px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tree-children li a:hover {
  color: var(--color-blue);
  background-color: var(--color-blue-light);
}

.sidebar-note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border-light);
}

.sidebar-note p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- 主内容区 ---------- */

.site-main {
  flex: 1;
}

.inner-main {
  min-width: 0;
  max-width: var(--content-width);
}

/* 面包屑 */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 4px 0 20px;
  flex-wrap: wrap;
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--color-border);
  user-select: none;
}

.breadcrumb-current {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* 页面标题区 */

.page-header {
  padding-bottom: 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-border-light);
}

.page-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
}

.page-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 720px;
  line-height: 1.7;
}

/* 区块标题 */

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.module-desc,
.section-desc,
.section-intro {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  max-width: 720px;
}

/* 通用按钮 */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background-color: var(--color-blue);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, transform 0.2s ease;
  min-height: 44px;
}

.btn-primary:hover {
  background-color: var(--color-blue-dark);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background-color: var(--color-surface);
  color: var(--color-blue);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
}

.btn-secondary:hover {
  background-color: var(--color-blue-light);
  border-color: var(--color-blue);
  color: var(--color-blue);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-blue);
  padding: 4px 0;
}

.text-link:hover {
  color: var(--color-blue-dark);
  text-decoration: underline;
}

.text-link::after {
  content: "→";
  font-size: 14px;
  transition: transform 0.2s ease;
}

.text-link:hover::after {
  transform: translateX(3px);
}

/* ==========================================================================
   3. Components - 通用组件
   ========================================================================== */

/* ---------- 图片容器 ---------- */

figure {
  margin: 0;
}

figcaption {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.5;
}

/* ---------- 提示框 ---------- */

.notice-box {
  background-color: var(--color-blue-light);
  border: 1px solid #bee3f8;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 32px;
}

.notice-text {
  font-size: var(--font-size-sm);
  color: var(--color-blue-dark);
  line-height: 1.7;
}

.tip-box {
  background-color: var(--color-orange-light);
  border: 1px solid #fbd38d;
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.tip-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #9c4221;
  margin-bottom: 6px;
}

.tip-box p {
  font-size: var(--font-size-sm);
  color: #744210;
  line-height: 1.6;
}

/* ---------- FAQ ---------- */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  position: relative;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

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

.faq-item p,
.faq-answer {
  padding: 0 20px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-answer p {
  padding: 0;
}

/* ---------- 步骤条 ---------- */

.guide-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-blue);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.step-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---------- 返回首页 ---------- */

.page-back {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.page-back a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-blue);
}

.page-back a::before {
  content: "←";
  font-size: 16px;
}

.page-back a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   4. Pages - 首页
   ========================================================================== */

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  padding: var(--gap-lg) var(--gap-base);
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* ---------- 首屏混合门户 ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.9fr;
  gap: var(--gap-lg);
  align-items: stretch;
}

/* 左侧推荐封面 */

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

.feature-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.feature-figure {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-border-light);
}

.feature-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.feature-card:hover .feature-image {
  transform: scale(1.03);
}

.feature-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.feature-content h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
}

.feature-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.feature-content .btn-primary {
  align-self: flex-start;
  margin-top: 4px;
}

/* 中间分类网格 */

.hero-center {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.hero-center .section-title {
  font-size: 20px;
  margin-bottom: 6px;
}

.hero-center .module-desc {
  font-size: var(--font-size-sm);
  margin-bottom: 16px;
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  flex: 1;
}

.genre-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 12px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  text-align: center;
}

.genre-card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.genre-icon {
  font-size: 24px;
  line-height: 1;
}

.genre-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.hero-center-footer {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* 右侧更新摘要 */

.hero-right {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.hero-right .section-title {
  font-size: 20px;
  margin-bottom: 6px;
}

.hero-right .module-desc {
  font-size: var(--font-size-sm);
  margin-bottom: 16px;
}

.update-summary-list {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.update-summary-item {
  border-bottom: 1px solid var(--color-border-light);
}

.update-summary-item:last-child {
  border-bottom: none;
}

.update-summary-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  transition: background-color 0.2s ease;
}

.update-summary-link:hover {
  background-color: var(--color-bg);
}

.update-title {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.update-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.hero-right .btn-secondary {
  margin-top: 16px;
  align-self: stretch;
}

/* 首屏内容配图 */

.content-media {
  grid-column: 1 / -1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  padding: 12px;
}

.content-media img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.content-media figcaption {
  padding: 10px 4px 4px;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
}

/* ---------- 题材榜单摘要 ---------- */

.ranking-summary {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.ranking-summary .section-title {
  font-size: 22px;
  margin-bottom: 6px;
}

.ranking-summary .module-desc {
  margin-bottom: 24px;
}

.ranking-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.ranking-genre {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--color-blue-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ranking-genre::before {
  content: "";
  width: 4px;
  height: 18px;
  background-color: var(--color-blue);
  border-radius: 2px;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ranking-list li a {
  display: block;
  padding: 8px 10px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.ranking-list li a:hover {
  background-color: var(--color-bg);
  color: var(--color-blue);
}

.center-link {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

/* ---------- 本周更新记录 ---------- */

.recent-timeline {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.recent-timeline .section-title {
  font-size: 22px;
  margin-bottom: 6px;
}

.recent-timeline .module-desc {
  margin-bottom: 24px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 24px;
}

.timeline-day {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
}

.timeline-date {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-blue);
  padding-top: 4px;
}

.timeline-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 2px solid var(--color-border-light);
  padding-left: 20px;
}

.timeline-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 6px 0;
}

.item-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.item-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.recent-timeline .btn-secondary {
  display: flex;
  margin: 0 auto;
}

/* ---------- 阅读须知与反馈帮助双卡 ---------- */

.guide-feedback {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-lg);
}

.entry-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.entry-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.entry-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.entry-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.entry-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.entry-content .btn-primary {
  align-self: flex-start;
  margin-top: 8px;
}

/* ---------- 追更指南入口 ---------- */

.guide-entry {
  background-color: var(--color-blue-light);
  border: 1px solid #bee3f8;
  border-radius: var(--radius-lg);
  padding: 28px;
}

.guide-entry-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.guide-entry .section-title {
  font-size: 22px;
  margin-bottom: 0;
}

.guide-entry .module-desc {
  margin-bottom: 8px;
}

.guide-steps {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 8px 0;
}

.guide-entry .guide-step {
  flex-direction: column;
  gap: 8px;
  padding: 16px 20px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  min-width: 140px;
}

.guide-entry .step-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.guide-entry .btn-secondary {
  margin-top: 8px;
}

/* ==========================================================================
   5. Pages - 作品总览 (works.html)
   ========================================================================== */

.works-cover-figure {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

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

.works-cover-figure figcaption {
  padding: 10px 16px;
  text-align: left;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* 筛选器 */

.filter-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.filter-section .section-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.filter-group {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.filter-group:last-child {
  border-bottom: none;
}

.filter-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  min-width: 72px;
  padding-top: 8px;
  flex-shrink: 0;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}

.filter-btn {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all 0.2s ease;
  min-height: 36px;
}

.filter-btn:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
}

.filter-btn.is-active {
  background-color: var(--color-blue);
  border-color: var(--color-blue);
  color: #ffffff;
  font-weight: 500;
}

/* 结果表 */

.result-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.result-section .section-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.works-table {
  width: 100%;
  min-width: 560px;
  font-size: var(--font-size-sm);
}

.works-table thead th {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.works-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.works-table tbody tr:last-child td {
  border-bottom: none;
}

.works-table tbody tr:hover td {
  background-color: var(--color-bg);
}

.result-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background-color: var(--color-green-light);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: #276749;
  line-height: 1.6;
}

.result-tip a {
  color: var(--color-green);
  font-weight: 600;
}

.result-tip a:hover {
  text-decoration: underline;
}

/* 字段解释 */

.legend-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.legend-section .section-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.legend-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.legend-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.legend-item:last-child {
  border-bottom: none;
}

.legend-term {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.legend-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 相关入口 */

.related-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.related-links .section-title {
  font-size: 18px;
  margin-bottom: 16px;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-list li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  border-radius: 20px;
  transition: background-color 0.2s ease;
}

.related-list li a:hover {
  background-color: #dbeafe;
  color: var(--color-blue-dark);
}

/* ==========================================================================
   6. Pages - 题材导航 (tags.html)
   ========================================================================== */

/* 标签墙 */

.tag-wall {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.tag-wall .section-title,
.tag-cards .section-title,
.tag-guide .section-title {
  font-size: 18px;
  margin-bottom: 8px;
}

.tag-wall .section-desc,
.tag-cards .section-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.tag-item {
  display: inline-block;
  padding: 6px 14px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 20px;
  transition: all 0.2s ease;
}

.tag-item:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
  background-color: var(--color-blue-light);
}

.tag-xl {
  font-size: 16px;
  padding: 8px 18px;
  font-weight: 700;
}

.tag-lg {
  font-size: 15px;
  padding: 7px 16px;
  font-weight: 600;
}

.tag-md {
  font-size: var(--font-size-sm);
  padding: 6px 14px;
}

.tag-sm {
  font-size: var(--font-size-xs);
  padding: 5px 12px;
}

/* 题材说明卡片 */

.tag-cards {
  margin-bottom: 32px;
}

.tag-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tag-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}

.tag-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tag-card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-border-light);
}

.card-figure {
  width: 100%;
  height: 100%;
}

.card-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.tag-card:hover .card-figure img {
  transform: scale(1.03);
}

.tag-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.tag-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.tag-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.tag-card-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.label-item {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  border-radius: 12px;
}

.tag-card-link {
  align-self: flex-start;
  margin-top: 4px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-blue);
}

.tag-card-link:hover {
  text-decoration: underline;
}

.tag-card-link::after {
  content: " →";
}

/* 题材使用指南 */

.tag-guide {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.tag-guide .guide-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 20px 0;
}

.tag-guide .guide-step {
  padding: 12px 0;
}

.tag-guide .guide-step .step-num {
  background-color: var(--color-green);
}

.tag-guide .guide-step p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.guide-more {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.guide-more a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-blue);
}

.guide-more a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   7. Pages - 更新日历 (updates.html)
   ========================================================================== */

.update-cover {
  margin-bottom: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
}

.update-cover img {
  width: 100%;
  height: auto;
  max-height: 240px;
  object-fit: cover;
}

.update-cover figcaption {
  padding: 10px 16px;
  text-align: left;
}

/* 更新说明 */

.update-notice {
  margin-bottom: 24px;
}

/* 月份时间轴 */

.month-timeline {
  margin-bottom: 32px;
}

.month-timeline .section-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.month-group {
  margin-bottom: 28px;
}

.month-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-blue-light);
  margin-bottom: 8px;
}

.month-summary {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.update-item {
  display: grid;
  grid-template-columns: 100px 100px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 10px 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease;
}

.update-item:hover {
  border-color: var(--color-blue);
}

.update-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.update-type {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  padding: 2px 8px;
  border-radius: 10px;
  display: inline-block;
  text-align: center;
  justify-self: start;
}

.update-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 日历指南 */

.calendar-guide {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.calendar-guide .section-title {
  font-size: 18px;
  margin-bottom: 20px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.guide-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guide-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.guide-card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.guide-card .text-link {
  align-self: flex-start;
}

/* ==========================================================================
   8. Pages - 追更指南 (guide.html)
   ========================================================================== */

/* 步骤说明 */

.guide-steps {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
}

.guide-steps h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-steps .section-intro {
  margin-bottom: 24px;
}

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

.step-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.step-card .step-num {
  width: 36px;
  height: 36px;
  font-size: 16px;
  background-color: var(--color-blue);
}

.step-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.step-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.step-card a {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-blue);
  align-self: flex-start;
  margin-top: 4px;
}

.step-card a:hover {
  text-decoration: underline;
}

/* 工具说明 */

.guide-tools {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
}

.guide-tools h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-tools .section-intro {
  margin-bottom: 24px;
}

.tools-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tool-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.tool-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-border-light);
}

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

.tool-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.tool-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.tool-body p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.tool-body a {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-blue);
  align-self: flex-start;
  margin-top: 4px;
}

.tool-body a:hover {
  text-decoration: underline;
}

/* FAQ */

.guide-faq {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
}

.guide-faq h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-faq .section-intro {
  margin-bottom: 20px;
}

/* 相关入口 */

.guide-related {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.guide-related h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.related-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guide-related .related-links a {
  display: inline-block;
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-blue);
  background-color: var(--color-blue-light);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
  align-self: flex-start;
}

.guide-related .related-links a:hover {
  background-color: #dbeafe;
  color: var(--color-blue-dark);
}

/* ==========================================================================
   9. Pages - 阅读须知 (notice.html)
   ========================================================================== */

/* 内容边界 */

.boundary-section {
  margin-bottom: 32px;
}

.boundary-section .section-title,
.copyright-section .section-title,
.feedback-entry-section .section-title {
  font-size: 18px;
  margin-bottom: 16px;
}

.boundary-intro {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.notice-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.notice-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.boundary-lead {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.8;
}

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

.boundary-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-card .card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-blue-light);
}

.boundary-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 版权说明 */

.copyright-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.copyright-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.copyright-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 反馈入口 */

.feedback-entry-section {
  margin-bottom: 32px;
}

.feedback-entry-card {
  background-color: var(--color-blue-light);
  border: 1px solid #bee3f8;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.feedback-entry-text {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 260px;
}

.feedback-entry-text p {
  font-size: var(--font-size-sm);
  color: var(--color-blue-dark);
  line-height: 1.7;
}

.feedback-entry-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background-color: var(--color-blue);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
  flex-shrink: 0;
  transition: background-color 0.2s ease;
}

.feedback-entry-link:hover {
  background-color: var(--color-blue-dark);
  color: #ffffff;
}

/* 提示框 */

.notice-tips {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ==========================================================================
   10. Pages - 反馈帮助 (feedback.html)
   ========================================================================== */

/* 反馈范围 */

.scope-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.scope-section .section-title,
.process-section .section-title,
.faq-section .section-title {
  font-size: 18px;
  margin-bottom: 16px;
}

.scope-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 24px;
  align-items: center;
}

.scope-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.scope-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.scope-figure figcaption {
  padding: 8px;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
}

.scope-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scope-text p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 处理流程 */

.process-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

.process-intro {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

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

.process-step {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-green);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.process-step .step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.process-step .step-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* FAQ */

.faq-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}

/* ==========================================================================
   11. Pages - 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px var(--gap-base);
  flex: 1;
}

.error-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  max-width: 520px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.error-code {
  font-size: 64px;
  font-weight: 800;
  color: var(--color-blue);
  line-height: 1;
}

.error-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
}

.error-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 28px;
  background-color: var(--color-blue);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
  margin-top: 8px;
  transition: background-color 0.2s ease;
}

.error-home-link:hover {
  background-color: var(--color-blue-dark);
  color: #ffffff;
}

.error-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.error-links a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-blue);
}

.error-links a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   12. Responsive - 响应式
   ========================================================================== */

/* ---------- 平板（≤1024px） ---------- */

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr 1fr;
  }

  .hero-right {
    grid-column: 1 / -1;
  }

  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .boundary-intro,
  .scope-content {
    grid-template-columns: 1fr;
  }

  .sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 20px;
  }
}

/* ---------- 手机（≤768px） ---------- */

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
  }

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

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0 16px;
    gap: 2px;
  }

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

  .site-nav.is-open {
    max-height: 480px;
    overflow-y: auto;
  }

  .nav-link {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
  }

  /* 布局切换为单列 */

  .layout-shell,
  .page-layout {
    grid-template-columns: 1fr !important;
    padding: 24px 16px;
    gap: 24px;
  }

  .sidebar-left {
    grid-template-columns: 1fr;
  }

  .sidebar-area,
  .sidebar {
    order: 2;
  }

  .inner-main {
    order: 1;
  }

  .sidebar-inner {
    position: static;
  }

  .page-header {
    padding-bottom: 16px;
    margin-bottom: 20px;
  }

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

  .breadcrumb {
    padding-bottom: 16px;
  }

  /* 首页 */

  .home-main {
    padding: 24px 16px;
    gap: 32px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-left,
  .hero-center,
  .hero-right {
    grid-column: 1;
  }

  .genre-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .genre-card {
    padding: 16px 8px;
  }

  .ranking-summary,
  .recent-timeline {
    padding: 20px;
  }

  .ranking-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .timeline-day {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .timeline-items {
    padding-left: 16px;
  }

  .guide-feedback {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .guide-steps {
    flex-direction: column;
    align-items: stretch;
  }

  .guide-entry .guide-step {
    min-width: 0;
  }

  .content-media {
    padding: 8px;
  }

  /* 页脚 */

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 16px 24px;
  }

  /* 作品总览 */

  .filter-section,
  .result-section,
  .legend-section,
  .related-links {
    padding: 20px;
  }

  .filter-group {
    flex-direction: column;
    gap: 8px;
  }

  .filter-label {
    min-width: 0;
    padding-top: 0;
  }

  .legend-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  /* 题材导航 */

  .tag-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .tag-cloud {
    gap: 8px;
  }

  /* 更新日历 */

  .update-item {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 14px;
  }

  .update-type {
    justify-self: start;
  }

  .guide-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 追更指南 */

  .steps-wrap,
  .tools-wrap,
  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .guide-steps,
  .guide-tools,
  .guide-faq,
  .guide-related {
    padding: 20px;
  }

  /* 阅读须知 */

  .boundary-grid,
  .notice-tips {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feedback-entry-card {
    flex-direction: column;
    align-items: stretch;
  }

  .feedback-entry-link {
    align-self: flex-start;
  }

  /* 反馈帮助 */

  .scope-content {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .scope-figure img {
    aspect-ratio: 16 / 9;
  }

  /* 404 */

  .error-panel {
    padding: 32px 24px;
  }

  .error-code {
    font-size: 48px;
  }
}

/* ---------- 小手机（≤390px） ---------- */

@media (max-width: 390px) {
  .genre-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .header-inner {
    gap: 8px;
  }

  .nav-link {
    font-size: var(--font-size-sm);
    padding: 10px 12px;
  }

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

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

  .ranking-columns {
    gap: 20px;
  }

  .timeline-day {
    grid-template-columns: 1fr;
  }

  .timeline-items {
    padding-left: 12px;
  }

  .update-summary-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .entry-card {
    padding: 20px;
  }

  .tag-item {
    padding: 5px 10px;
    font-size: var(--font-size-xs);
  }

  .tag-xl {
    font-size: 14px;
    padding: 6px 12px;
  }

  .tag-lg {
    font-size: var(--font-size-sm);
    padding: 5px 12px;
  }

  .step-card {
    padding: 20px 16px;
  }

  .process-step {
    padding: 20px 16px;
  }

  .tool-body {
    padding: 16px;
  }
}