/* ============================================================
   BASE — 全局基础样式
   ============================================================ */
:root {
  --color-bg: #1a1d29;
  --color-bg-card: #2a2e3d;
  --color-bg-card-hover: #323748;
  --color-accent: #ff4d6d;
  --color-accent-soft: rgba(255, 77, 109, 0.15);
  --color-secondary: #00c2a8;
  --color-secondary-soft: rgba(0, 194, 168, 0.15);
  --color-text: #f0f0f0;
  --color-text-dim: #b8bcc9;
  --color-text-mute: #8a8f9e;
  --color-border: rgba(255, 255, 255, 0.08);
  --footer-bg: #f7f3e9;
  --footer-text: #3a3d4a;
  --footer-text-dim: #6b6f7d;
  --footer-border: rgba(58, 61, 74, 0.1);
  --content-max: 1200px;
  --content-pad: 24px;
  --radius: 8px;
  --radius-sm: 6px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --header-h: 64px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 15px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

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

/* ============================================================
   LAYOUT — 全站骨架
   ============================================================ */

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

.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

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

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-dim);
  letter-spacing: 0.01em;
}

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

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

.nav-item {
  position: relative;
}

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

.nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-item.is-current .nav-link {
  color: var(--color-text);
  font-weight: 600;
}

.nav-item.is-current .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

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

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-main {
  min-height: 60vh;
}

/* 内页统一容器 */
.inner-main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 32px var(--content-pad) 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-mute);
  margin-bottom: 28px;
}

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

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

.breadcrumb-sep {
  color: var(--color-text-mute);
  opacity: 0.6;
}

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

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
}

.page-description {
  font-size: 13px;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  font-weight: 600;
}

.page-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 12px;
}

.page-intro,
.page-lead,
.page-subtitle {
  font-size: 16px;
  color: var(--color-text-dim);
  max-width: 720px;
  line-height: 1.8;
}

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */

/* 章节标题 */
.section-heading {
  margin-bottom: 24px;
}

.section-kicker {
  font-size: 13px;
  color: var(--color-secondary);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.section-desc {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-top: 8px;
  max-width: 640px;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 20px;
  line-height: 1.6;
  white-space: nowrap;
}

.theme-tag {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.status-tag {
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
  line-height: 1.4;
}

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

.btn-primary:hover {
  background: #e63d5c;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* 内容图片 */
.content-media {
  margin: 24px 0;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.content-media figcaption {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 8px;
  text-align: center;
}

.content-media-inline {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* 查看详情提示 */
.section-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-secondary);
  margin-top: 16px;
  transition: gap 0.2s ease;
}

.section-more:hover {
  gap: 10px;
  color: var(--color-accent);
}

/* 检查清单 */
.checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.6;
}

.check-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

.check-icon::before {
  content: "✓";
}

/* 时间线（通用） */
.process-timeline {
  position: relative;
  padding-left: 0;
}

/* ============================================================
   PAGES — 首页
   ============================================================ */

.site-home {
  background: var(--color-bg);
}

/* 首屏焦点区 */
.hero-section {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(255, 77, 109, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -40px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(0, 194, 168, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 72px var(--content-pad) 56px;
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

#hero-title {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--color-text);
}

#hero-title .accent {
  color: var(--color-accent);
}

.hero-subtitle {
  font-size: 17px;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-note {
  font-size: 13px;
  color: var(--color-text-mute);
}

.hero-media {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-figure {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

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

.cover-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cover-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.cover-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.cover-card figcaption {
  padding: 8px 10px;
  font-size: 13px;
  color: var(--color-text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 首页主体两栏 */
.home-layout {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px var(--content-pad) 64px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

/* 左侧主内容 */
.home-main-col {
  display: flex;
  flex-direction: column;
  gap: 56px;
  min-width: 0;
}

.home-section .section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.home-section .section-heading h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
}

.home-section .section-heading .section-desc {
  flex-basis: 100%;
  margin-top: 4px;
}

.chapter-num {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  opacity: 0.85;
}

/* 题材分类速览 */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.theme-block {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.2s ease, transform 0.2s ease;
  border: 1px solid transparent;
}

.theme-block:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(255, 77, 109, 0.3);
  transform: translateY(-2px);
}

.theme-index {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
}

.theme-block h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.theme-block p {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.6;
  flex: 1;
}

.theme-block img {
  width: 100%;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

/* 最近更新短讯列表 */
.update-list {
  display: flex;
  flex-direction: column;
}

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.update-date {
  font-size: 13px;
  color: var(--color-text-mute);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  min-width: 64px;
}

.update-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
  transition: color 0.2s ease;
}

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

.update-item .tag {
  flex-shrink: 0;
}

/* 阅读指南提示带 */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.guide-step {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
}

.guide-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.guide-step p {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.6;
}

/* 右侧侧栏 */
.home-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-width: 0;
}

.sidebar-section {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px;
}

.sidebar-section .section-heading {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 18px;
}

.sidebar-section .section-heading h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

/* 热度榜单 */
.rank-list {
  display: flex;
  flex-direction: column;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.rank-num {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  min-width: 28px;
  text-align: center;
}

.rank-item:nth-child(n+4) .rank-num {
  color: var(--color-text-mute);
}

.rank-item img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.rank-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
  line-height: 1.4;
  transition: color 0.2s ease;
}

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

.rank-item .tag {
  flex-shrink: 0;
}

.rank-note {
  font-size: 12px;
  color: var(--color-text-mute);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* 选书标准摘要 */
.standard-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.standard-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.standard-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.standard-card p {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.6;
}

/* 版权与反馈条 */
.feedback-section {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px;
}

.feedback-section h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.feedback-section p {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* ============================================================
   PAGES — 题材分类页
   ============================================================ */

.page-ticaifenlei .inner-main {
  padding-top: 32px;
}

.layout-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  align-items: start;
}

/* 左侧分类索引 */
.category-index {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 20px;
}

.index-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.index-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.index-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-text-dim);
  transition: background 0.2s ease, color 0.2s ease;
}

.index-item a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
}

.index-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
  min-width: 20px;
}

.index-tip {
  font-size: 12px;
  color: var(--color-text-mute);
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  line-height: 1.6;
}

/* 右侧分类详情 */
.category-detail {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

.category-block {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 28px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.category-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 14px;
}

.category-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  opacity: 0.85;
  flex-shrink: 0;
}

.category-head-text {
  flex: 1;
}

.category-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.category-taste {
  font-size: 13px;
  color: var(--color-secondary);
}

.category-desc {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 10px;
}

.category-audience {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-bottom: 18px;
}

.category-audience strong {
  color: var(--color-text-dim);
  font-weight: 600;
}

/* 作品卡片 */
.work-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.work-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.work-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.work-figure {
  overflow: hidden;
}

.work-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.work-card:hover .work-figure img {
  transform: scale(1.04);
}

.work-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  padding: 12px 14px 4px;
}

.work-tags {
  padding: 0 14px 14px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.work-tags .tag {
  font-size: 11px;
  padding: 1px 8px;
}

/* 组合搭配 */
.combo-section {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 28px;
}

.combo-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.combo-intro {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.combo-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.combo-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--color-border);
}

.combo-pair {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.combo-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}

.combo-plus {
  color: var(--color-text-mute);
  font-size: 14px;
}

.combo-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.combo-desc {
  font-size: 13px;
  color: var(--color-text-mute);
  line-height: 1.7;
}

/* 阅读指南入口 */
.guide-entry {
  background: var(--color-secondary-soft);
  border: 1px solid rgba(0, 194, 168, 0.25);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.guide-entry-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.guide-entry p {
  font-size: 13px;
  color: var(--color-text-dim);
}

.guide-entry a {
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}

.guide-entry a:hover {
  color: var(--color-text);
}

/* ============================================================
   PAGES — 最近更新页
   ============================================================ */

.page-zuixingengxin .inner-main {
  padding-top: 32px;
}

/* 状态图例 */
.status-legend {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
}

.status-legend .section-title {
  font-size: 16px;
  margin-bottom: 14px;
}

.legend-list {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-dim);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-new .legend-dot {
  background: var(--color-accent);
}

.legend-serial .legend-dot {
  background: var(--color-secondary);
}

.legend-hiatus .legend-dot {
  background: var(--color-text-mute);
}

/* 更新日期分组 */
.update-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.date-group {
  margin-bottom: 0;
}

.date-group-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.date-count {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-mute);
}

.update-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.update-item {
  display: flex;
  gap: 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 16px;
  border-bottom: none;
  transition: background 0.2s ease;
}

.update-item:hover {
  background: var(--color-bg-card-hover);
}

.update-media {
  flex-shrink: 0;
}

.update-cover {
  width: 96px;
  height: 128px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.update-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.update-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.update-meta {
  font-size: 13px;
  color: var(--color-text-mute);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.update-meta .tag {
  font-size: 11px;
  padding: 1px 8px;
}

.update-desc {
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 统计注释 */
.update-stats-note {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 24px;
  padding: 14px 18px;
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-secondary);
}

/* 相关入口 */
.related-links {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
}

.related-links p {
  font-size: 14px;
  color: var(--color-text-dim);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.related-links a {
  color: var(--color-secondary);
  font-weight: 600;
}

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

/* 状态标签颜色 */
.status {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 20px;
  line-height: 1.6;
}

.status-new {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.status-serial {
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
}

.status-hiatus {
  background: rgba(138, 143, 158, 0.15);
  color: var(--color-text-mute);
}

/* ============================================================
   PAGES — 选书标准页
   ============================================================ */

.page-xuanshubiaozhun .inner-main {
  padding-top: 32px;
}

/* 四个选书维度 */
.criterion-section {
  margin-bottom: 48px;
}

.criterion-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.criterion-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  position: relative;
  border-top: 3px solid var(--color-accent);
  transition: transform 0.2s ease;
}

.criterion-card:nth-child(even) {
  border-top-color: var(--color-secondary);
}

.criterion-card:hover {
  transform: translateY(-3px);
}

.criterion-index {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.25;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 12px;
}

.criterion-card:nth-child(even) .criterion-index {
  color: var(--color-secondary);
}

.criterion-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.criterion-level {
  font-size: 12px;
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 10px;
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-secondary-soft);
  border-radius: 20px;
}

.criterion-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
}

/* 评估流程时间线 */
.process-section {
  margin-bottom: 48px;
}

.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 0;
}

.process-step {
  display: flex;
  gap: 20px;
  padding: 0 0 28px;
  position: relative;
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-step::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.process-step:last-child::before {
  display: none;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  z-index: 1;
}

.process-timeline .process-step:nth-child(even) .step-number {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.step-body {
  flex: 1;
  padding-top: 6px;
  min-width: 0;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
  max-width: 640px;
}

/* 检查清单 */
.checklist-section {
  margin-bottom: 48px;
}

.checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

.check-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-secondary-soft);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

.check-icon::before {
  content: "✓";
}

/* 后续步骤 */
.nextstep-section {
  margin-bottom: 0;
}

.nextstep-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.nextstep-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: left;
  transition: transform 0.2s ease;
}

.nextstep-card:hover {
  transform: translateY(-3px);
}

.nextstep-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.3;
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
}

.nextstep-card:nth-child(2) .nextstep-number {
  color: var(--color-secondary);
}

.nextstep-card:nth-child(3) .nextstep-number {
  color: #f0a500;
}

.nextstep-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.nextstep-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.nextstep-note {
  font-size: 14px;
  color: var(--color-text-mute);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border-radius: var(--radius);
}

.nextstep-note a {
  color: var(--color-secondary);
  font-weight: 600;
}

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

/* ============================================================
   PAGES — 阅读指南页
   ============================================================ */

.page-yueduzhinan .inner-main {
  padding-top: 32px;
}

/* 三种阅读路径 */
.paths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.path-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.path-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.path-card-media {
  overflow: hidden;
}

.path-card-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.path-card:hover .path-card-media img {
  transform: scale(1.04);
}

.path-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  padding: 16px 20px 6px;
}

.path-card-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
  padding: 0 20px;
  flex: 1;
}

.path-card-action {
  padding: 12px 20px 20px;
}

.path-card-action a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.path-card-action a:hover {
  color: var(--color-accent);
}

/* 追更流程 */
.process-section {
  margin-bottom: 48px;
}

.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.process-item {
  display: flex;
  gap: 20px;
  padding: 0 0 28px;
  position: relative;
}

.process-item:last-child {
  padding-bottom: 0;
}

.process-item::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.process-item:last-child::before {
  display: none;
}

.process-item .step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
  z-index: 1;
}

.process-item:nth-child(even) .step-number {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.process-content {
  flex: 1;
  padding-top: 6px;
  min-width: 0;
}

.process-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.process-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
  max-width: 640px;
}

/* 阅读习惯建议 */
.habit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}

.habit-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border-left: 3px solid var(--color-accent);
}

.habit-card:nth-child(2) {
  border-left-color: var(--color-secondary);
}

.habit-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.habit-text {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.8;
}

.habit-note {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* 检查清单（阅读指南版） */
.checklist-section {
  margin-bottom: 0;
}

.checklist-more {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 14px;
  font-style: italic;
}

/* ============================================================
   PAGES — 版权与反馈页
   ============================================================ */

.page-banquanyufankui .inner-main {
  padding-top: 32px;
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.layout-sidebar-right {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

.main-column {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

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

/* 内容边界 */
.content-section {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 28px;
}

.content-section .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

.section-intro {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.boundary-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
  padding: 20px;
}

.boundary-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.boundary-provide .boundary-card-title {
  color: var(--color-secondary);
}

.boundary-not-provide .boundary-card-title {
  color: var(--color-accent);
}

.boundary-list li {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-border);
}

.boundary-provide .boundary-list li::before {
  background: var(--color-secondary);
}

.boundary-not-provide .boundary-list li::before {
  background: var(--color-accent);
}

/* 版权说明 */
.copyright-section p {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 12px;
}

.copyright-section p:last-child {
  margin-bottom: 0;
}

/* 反馈流程 */
.feedback-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feedback-step {
  display: flex;
  gap: 16px;
  padding: 0 0 20px;
  position: relative;
}

.feedback-step:last-child {
  padding-bottom: 0;
}

.feedback-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.feedback-step:last-child::before {
  display: none;
}

.feedback-step .step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  z-index: 1;
  box-shadow: 0 0 0 4px var(--color-bg);
}

.feedback-step:nth-child(2) .step-number {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.feedback-step:nth-child(3) .step-number {
  border-color: #f0a500;
  color: #f0a500;
}

.step-content {
  flex: 1;
  padding-top: 4px;
  min-width: 0;
}

.step-content h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.feedback-note {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

.feedback-note a {
  color: var(--color-secondary);
  font-weight: 600;
}

/* FAQ 侧栏 */
.faq-widget {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.sidebar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

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

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

.faq-item summary {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 18px;
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

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

.faq-item p {
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.7;
  padding: 0 0 14px;
}

/* ============================================================
   PAGES — 404
   ============================================================ */

.site-error {
  background: var(--color-bg);
}

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-h) - 300px);
  padding: 48px 24px;
}

.error-panel {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 96px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  opacity: 0.8;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-dim);
  line-height: 1.8;
  margin-bottom: 24px;
}

.error-action {
  display: inline-block;
  padding: 12px 32px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: background 0.2s ease;
  margin-bottom: 20px;
}

.error-action:hover {
  background: #e63d5c;
}

.error-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  font-size: 14px;
}

.error-links a {
  color: var(--color-secondary);
  font-weight: 600;
}

.error-links a:hover {
  color: var(--color-text);
}

/* ============================================================
   FOOTER — 全站页脚
   ============================================================ */

.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  margin-top: 0;
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px var(--content-pad) 32px;
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.5fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--footer-text-dim);
  line-height: 1.8;
  max-width: 320px;
}

.footer-nav-title,
.footer-info-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--footer-text);
  margin-bottom: 14px;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--footer-text-dim);
  transition: color 0.2s ease;
}

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

.footer-info p {
  font-size: 13px;
  color: var(--footer-text-dim);
  line-height: 1.8;
  margin-bottom: 8px;
}

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

.footer-feedback a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 8px 20px;
  border: 1px solid rgba(255, 77, 109, 0.3);
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease;
}

.footer-feedback a:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid var(--footer-border);
  padding: 16px 0;
}

.footer-bottom p {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
  font-size: 12px;
  color: var(--footer-text-dim);
  text-align: center;
}

/* ============================================================
   RESPONSIVE — 响应式
   ============================================================ */

/* 平板 */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 48px;
  }

  .hero-subtitle {
    max-width: 100%;
  }

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

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

  .home-layout {
    grid-template-columns: 1fr;
  }

  .home-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .sidebar-section,
  .feedback-section {
    margin-bottom: 0;
  }

  .layout-shell {
    grid-template-columns: 180px 1fr;
    gap: 24px;
  }

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

  .page-layout,
  .layout-sidebar-right {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .faq-widget {
    position: static;
  }
}

/* 手机 */
@media (max-width: 768px) {
  :root {
    --content-pad: 16px;
    --header-h: 56px;
  }

  .header-inner {
    height: var(--header-h);
  }

  .brand-slogan {
    display: none;
  }

  .brand-name {
    font-size: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 2px;
  }

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

  .nav-link {
    padding: 12px 14px;
    font-size: 15px;
  }

  .nav-item.is-current .nav-link::after {
    display: none;
  }

  .nav-item.is-current .nav-link {
    color: var(--color-accent);
  }

  /* 首页 */
  .hero-content {
    padding: 40px 16px 32px;
    gap: 24px;
  }

  #hero-title {
    font-size: 32px;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

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

  .hero-update-wall {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .cover-card img {
    height: 100px;
  }

  .cover-card figcaption {
    font-size: 12px;
    padding: 6px 8px;
  }

  .home-layout {
    padding: 32px 16px 48px;
    gap: 32px;
  }

  .home-main-col {
    gap: 40px;
  }

  .home-section .section-heading h2 {
    font-size: 20px;
  }

  .theme-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .theme-block {
    padding: 14px;
  }

  .theme-block img {
    height: 72px;
  }

  .update-item {
    flex-wrap: wrap;
    gap: 8px 12px;
  }

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

  .update-title {
    flex-basis: calc(100% - 80px);
  }

  .guide-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  /* 内页通用 */
  .inner-main {
    padding: 24px 16px 48px;
  }

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

  .page-header {
    margin-bottom: 28px;
  }

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

  .page-intro,
  .page-lead,
  .page-subtitle {
    font-size: 14px;
  }

  /* 题材分类 */
  .layout-shell {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .category-index {
    position: static;
    overflow-x: auto;
    padding: 14px;
  }

  .index-title {
    font-size: 14px;
    margin-bottom: 10px;
  }

  .index-list {
    flex-direction: row;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .index-item a {
    padding: 6px 12px;
    white-space: nowrap;
    font-size: 13px;
    background: rgba(255, 255, 255, 0.04);
  }

  .index-tip {
    display: none;
  }

  .category-block {
    padding: 20px;
  }

  .category-num {
    font-size: 22px;
  }

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

  .work-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .work-figure img {
    height: 130px;
  }

  .combo-list {
    grid-template-columns: 1fr;
  }

  .guide-entry {
    padding: 16px;
  }

  /* 最近更新 */
  .status-legend {
    padding: 16px;
    margin-bottom: 24px;
  }

  .legend-list {
    gap: 14px;
  }

  .update-items {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .update-item {
    padding: 12px;
  }

  .update-cover {
    width: 80px;
    height: 108px;
  }

  .update-name {
    font-size: 15px;
  }

  .related-links p {
    flex-direction: column;
    gap: 10px;
  }

  /* 选书标准 */
  .criterion-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .criterion-card {
    padding: 18px 16px;
  }

  .process-step {
    gap: 14px;
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }

  .process-step::before {
    left: 19px;
  }

  .checklist {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .nextstep-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* 阅读指南 */
  .paths-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 36px;
  }

  .path-card-media img {
    height: 140px;
  }

  .habit-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 36px;
  }

  /* 版权与反馈 */
  .page-layout,
  .layout-sidebar-right {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-section {
    padding: 20px;
  }

  .boundary-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .feedback-step {
    gap: 14px;
  }

  /* 404 */
  .error-code {
    font-size: 72px;
  }

  .error-main {
    min-height: 50vh;
    padding: 32px 16px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 24px;
  }

  .footer-brand-desc {
    max-width: 100%;
  }

  .footer-bottom p {
    font-size: 11px;
  }
}

/* 小手机 */
@media (max-width: 390px) {
  .theme-grid {
    grid-template-columns: 1fr;
  }

  .work-list {
    grid-template-columns: 1fr;
  }

  .work-figure img {
    height: 180px;
  }

  .hero-update-wall {
    grid-template-columns: 1fr 1fr;
  }

  .cover-card:last-child {
    display: none;
  }
}

/* ============================================================
   ANIMATIONS — 轻量动效（不影响初始可见性）
   ============================================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content {
  animation: fadeInUp 0.5s ease-out both;
}

.home-section:nth-child(2) .theme-block {
  animation: fadeInUp 0.4s ease-out both;
  animation-delay: 0.05s;
}

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