/* ============================================================
   墨韵阁 MOYUN READING - 网络文学阅读平台 - 全局样式
   配色：米黄护眼底色 + 深棕/墨绿文字 + 暗金点缀
   字体：Alibaba PuHuiTi
   ============================================================ */

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

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

body {
  font-family: "Alibaba PuHuiTi", "Alibaba PuHuiTi 2.0", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: #3D2B1F;
  background-color: #F5EFE6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

a:hover {
  color: #B8860B;
}

ul,
ol {
  list-style: none;
}

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: #2C1810;
}

/* ---------- 设计令牌 ---------- */
:root {
  /* 主色 - 墨绿 */
  --color-primary: #2D5A3D;
  --color-primary-dark: #1E4030;
  --color-primary-light: #4A7C59;
  --color-primary-50: rgba(45, 90, 61, 0.06);
  --color-primary-100: rgba(45, 90, 61, 0.12);

  /* 辅色 - 深棕 */
  --color-secondary: #5D4037;
  --color-secondary-dark: #3E2723;
  --color-secondary-light: #8D6E63;

  /* 强调色 - 暗金 */
  --color-accent: #B8860B;
  --color-accent-light: #DAA520;
  --color-accent-50: rgba(184, 134, 11, 0.08);

  /* 文字色 */
  --text-primary: #2C1810;
  --text-secondary: #5D4037;
  --text-tertiary: #8D6E63;
  --text-muted: #A1887F;
  --text-light: #BCAAA4;
  --text-white: #FAF3E3;

  /* 背景色 - 米黄系 */
  --bg-body: #F5EFE6;
  --bg-white: #FFFBF2;
  --bg-cream: #FAF3E3;
  --bg-paper: #F5EFE6;
  --bg-card: #FFFBF2;
  --bg-footer: #2C1810;
  --bg-footer-dark: #1A0F08;

  /* 边框 */
  --border-color: #D7CCC8;
  --border-light: #EFEBE9;
  --border-dark: #BCAAA4;
  --border-primary: rgba(45, 90, 61, 0.3);

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(60, 40, 20, 0.04);
  --shadow-sm: 0 2px 6px rgba(60, 40, 20, 0.06);
  --shadow-md: 0 4px 12px rgba(60, 40, 20, 0.08);
  --shadow-lg: 0 8px 24px rgba(60, 40, 20, 0.12);
  --shadow-card: 0 2px 8px rgba(60, 40, 20, 0.06);
  --shadow-hover: 0 8px 20px rgba(60, 40, 20, 0.12);
  --shadow-book: 4px 6px 12px rgba(60, 40, 20, 0.15);

  /* 圆角 */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* 最大宽度 */
  --container-max: 1200px;
  --container-narrow: 880px;
}

/* ---------- 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-8) 0;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary);
}

.section-title h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
  position: relative;
  padding-left: var(--space-3);
  letter-spacing: 1px;
}

.section-title h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-title .more {
  font-size: 13px;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
}

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

/* ---------- 顶部条 ---------- */
.top-bar {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
  line-height: 1;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 32px;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.top-bar-date {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.top-bar-date svg {
  width: 13px;
  height: 13px;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.top-bar-right a {
  color: rgba(255, 255, 255, 0.75);
}

.top-bar-right a:hover {
  color: #FFD700;
}

/* ---------- 头部 ---------- */
.header {
  background: linear-gradient(180deg, #FFFBF2 0%, #FAF3E3 100%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.logo-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-light);
  font-weight: 700;
  font-size: 26px;
  border-radius: var(--radius-sm);
  letter-spacing: -1px;
  font-family: "KaiTi", "STKaiti", serif;
  box-shadow: var(--shadow-sm);
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-text {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 4px;
  line-height: 1.1;
  font-family: "KaiTi", "STKaiti", serif;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* 搜索框 */
.header-search {
  flex: 1;
  max-width: 400px;
}

.search-form {
  display: flex;
  width: 100%;
  height: 44px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
  background: #FFFFFF;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.search-form:focus-within {
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.search-input {
  flex: 1;
  padding: 0 var(--space-5);
  border: none;
  font-size: 14px;
  color: var(--text-primary);
  background: transparent;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  width: 90px;
  background: var(--color-primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all var(--transition-fast);
}

.search-btn:hover {
  background: var(--color-primary-dark);
}

.search-btn svg {
  width: 15px;
  height: 15px;
}

/* 头部操作 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.header-action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  cursor: pointer;
  background: #FFFBF2;
}

.header-action-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.header-action-btn.primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #FFFFFF;
  border-color: var(--color-primary);
  font-weight: 500;
}

.header-action-btn.primary:hover {
  background: var(--color-primary-dark);
  color: #FFFFFF;
}

.mobile-toggle {
  display: none;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-primary-dark);
}

.mobile-toggle svg {
  width: 22px;
  height: 22px;
}

/* ---------- 主导航 ---------- */
.main-nav {
  background: var(--color-primary);
  box-shadow: 0 2px 6px rgba(45, 90, 61, 0.2);
}

.nav-list {
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-item {
  flex-shrink: 0;
}

.nav-link {
  display: block;
  padding: 0 22px;
  height: 48px;
  line-height: 48px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.nav-link:hover,
.nav-item.active .nav-link {
  color: #FFD700;
  background: rgba(0, 0, 0, 0.15);
}

.nav-item.active .nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--color-accent-light);
  border-radius: 2px 2px 0 0;
}

.nav-item:first-child .nav-link {
  padding-left: 0;
}

/* ---------- 轮播图 ---------- */
.carousel-section {
  padding: var(--space-5) 0 var(--space-6);
}

.carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 6;
  background: var(--bg-paper);
  box-shadow: var(--shadow-md);
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-slide-bg {
  position: absolute;
  inset: 0;
}

.carousel-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(44, 24, 16, 0.85) 0%, rgba(44, 24, 16, 0.5) 45%, transparent 70%);
  pointer-events: none;
}

.carousel-slide-content {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: var(--space-10);
  color: #FFFFFF;
  z-index: 2;
  max-width: 460px;
}

.carousel-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-accent);
  color: #2C1810;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-xs);
  margin-bottom: var(--space-3);
}

.carousel-title {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: var(--space-3);
  line-height: 1.35;
  color: #FFFFFF;
  font-family: "KaiTi", "STKaiti", serif;
  letter-spacing: 1px;
}

.carousel-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.carousel-meta {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.carousel-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.carousel-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: var(--color-accent);
  color: #2C1810;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(218, 165, 32, 0.3);
  color: #2C1810;
}

.carousel-controls {
  position: absolute;
  bottom: var(--space-5);
  right: var(--space-6);
  display: flex;
  gap: var(--space-2);
  z-index: 3;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-dot.active {
  background: var(--color-accent-light);
  width: 28px;
  border-radius: 5px;
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(44, 24, 16, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 3;
  opacity: 0;
}

.carousel:hover .carousel-arrow {
  opacity: 1;
}

.carousel-arrow:hover {
  background: var(--color-primary);
}

.carousel-arrow.prev { left: var(--space-4); }
.carousel-arrow.next { right: var(--space-4); }

.carousel-arrow svg {
  width: 20px;
  height: 20px;
}

/* ---------- 主布局 ---------- */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-6);
  padding: var(--space-6) 0 var(--space-10);
}

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

.sidebar {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ---------- 书籍封面卡片 ---------- */
.book-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-primary);
}

.book-cover {
  aspect-ratio: 2 / 3;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-cover::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  background: linear-gradient(90deg, rgba(0,0,0,0.25), transparent);
  pointer-events: none;
}

.book-cover-title {
  font-size: 20px;
  font-weight: 700;
  color: #FAF3E3;
  text-align: center;
  padding: 0 var(--space-3);
  font-family: "KaiTi", "STKaiti", serif;
  line-height: 1.5;
  letter-spacing: 2px;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

.book-badge {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-xs);
  z-index: 2;
}

.book-badge.hot {
  background: var(--color-accent);
  color: #2C1810;
}

.book-badge.new {
  background: var(--color-primary);
  color: #FFFFFF;
}

.book-badge.end {
  background: var(--color-secondary);
  color: #FFFFFF;
}

.book-badge.vip {
  background: linear-gradient(135deg, #DAA520, #B8860B);
  color: #2C1810;
}

.book-card-body {
  padding: var(--space-3) var(--space-4) var(--space-4);
}

.book-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: var(--space-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
}

.book-card:hover .book-title {
  color: var(--color-primary);
}

.book-author {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.book-author span {
  color: var(--text-muted);
  margin-right: var(--space-1);
}

.book-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.book-tag {
  font-size: 11px;
  padding: 1px 6px;
  color: var(--color-primary);
  background: var(--color-primary-50);
  border-radius: var(--radius-xs);
  font-weight: 500;
}

.book-status {
  font-size: 11px;
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  font-weight: 500;
}

.book-status.ongoing {
  color: #E65100;
  background: rgba(230, 81, 0, 0.08);
}

.book-status.completed {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

/* ---------- 书籍网格 ---------- */
.book-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

/* ---------- 书籍列表（竖排） ---------- */
.book-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.book-list-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-light);
}

.book-list-item:hover {
  border-color: var(--border-primary);
  box-shadow: var(--shadow-sm);
}

.book-list-cover {
  width: 90px;
  height: 135px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FAF3E3;
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  padding: 6px;
  box-shadow: var(--shadow-sm);
  line-height: 1.4;
  position: relative;
}

.book-list-cover::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: linear-gradient(90deg, rgba(0,0,0,0.25), transparent);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.book-list-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.book-list-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.book-list-item:hover .book-list-title {
  color: var(--color-primary);
}

.book-list-author {
  font-size: 13px;
  color: var(--text-tertiary);
}

.book-list-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-list-meta {
  display: flex;
  gap: var(--space-3);
  font-size: 12px;
  color: var(--text-muted);
  align-items: center;
  flex-wrap: wrap;
}

.book-list-meta .book-tag {
  font-size: 11px;
}

/* ---------- 侧边栏组件 ---------- */
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
}

.widget-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  height: 48px;
  background: var(--bg-cream);
  border-bottom: 1px solid var(--border-light);
}

.widget-title h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary-dark);
  position: relative;
  padding-left: var(--space-3);
  letter-spacing: 1px;
}

.widget-title h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 2px;
}

.widget-title .more-link {
  font-size: 12px;
  color: var(--text-tertiary);
}

.widget-title .more-link:hover {
  color: var(--color-accent);
}

/* 排行榜 */
.ranking-list {
  padding: var(--space-2) 0;
}

.ranking-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.ranking-item:hover {
  background: var(--bg-cream);
}

.rank-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--bg-paper);
  color: var(--text-tertiary);
  border-radius: var(--radius-xs);
  font-family: "Georgia", serif;
}

.ranking-item:nth-child(1) .rank-num {
  background: linear-gradient(135deg, #DAA520, #B8860B);
  color: #2C1810;
}

.ranking-item:nth-child(2) .rank-num {
  background: linear-gradient(135deg, #C0C0C0, #A0A0A0);
  color: #2C1810;
}

.ranking-item:nth-child(3) .rank-num {
  background: linear-gradient(135deg, #CD7F32, #A0522D);
  color: #FFFFFF;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-title {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 3px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
  font-weight: 500;
}

.ranking-item:hover .rank-title {
  color: var(--color-primary);
}

.rank-sub {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: var(--space-2);
}

.rank-hot {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--color-accent);
  font-weight: 600;
  background: var(--color-accent-50);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
}

/* ---------- 分类标签 ---------- */
.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  margin-bottom: var(--space-5);
}

.category-chip {
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.category-chip:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

.category-chip.active {
  background: var(--color-primary);
  color: #FFFFFF;
  font-weight: 500;
  border-color: var(--color-primary);
}

/* ---------- 分类导航卡片 ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-3);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.category-card:hover .category-icon {
  background: var(--color-primary);
  color: #FFFFFF;
}

.category-card:hover .category-name {
  color: var(--color-primary);
}

.category-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto var(--space-2);
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.category-icon svg {
  width: 22px;
  height: 22px;
}

.category-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

/* ---------- Tabs ---------- */
.tab-bar {
  display: flex;
  gap: var(--space-5);
  border-bottom: 2px solid var(--border-color);
  margin-bottom: var(--space-5);
  background: var(--bg-card);
  padding: 0 var(--space-4);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.tab-item {
  flex-shrink: 0;
  padding: var(--space-4) var(--space-3);
  font-size: 15px;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  position: relative;
}

.tab-item:hover { color: var(--color-primary); }
.tab-item.active { color: var(--color-primary); font-weight: 600; }

.tab-item.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px 2px 0 0;
}

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: var(--space-8);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 var(--space-3);
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.pagination a {
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.pagination a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.pagination .current {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.pagination .dots {
  color: var(--text-tertiary);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding: var(--space-3) 0;
  font-size: 13px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--text-tertiary); }
.breadcrumb a:hover { color: var(--color-primary); }

.breadcrumb .separator {
  color: var(--text-light);
  font-size: 11px;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(45, 90, 61, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45, 90, 61, 0.3);
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
  color: #2C1810;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(184, 134, 11, 0.25);
}

.btn-gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(184, 134, 11, 0.3);
  color: #2C1810;
}

.btn-lg {
  padding: 12px 32px;
  font-size: 15px;
}

.btn-block {
  width: 100%;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--bg-footer);
  color: #BCAAA4;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
  gap: var(--space-8);
  padding: var(--space-10) 0 var(--space-8);
  border-bottom: 1px solid #3E2723;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  color: #8D6E63;
  margin: var(--space-4) 0 var(--space-5);
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: #3E2723;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: #BCAAA4;
}

.footer-social a:hover {
  background: var(--color-primary);
  color: #FFD700;
  transform: translateY(-2px);
}

.footer-social svg {
  width: 16px;
  height: 16px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #EFEBE9;
  margin-bottom: var(--space-5);
  position: relative;
  padding-bottom: var(--space-3);
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--color-accent);
}

.footer-col li {
  margin-bottom: var(--space-3);
}

.footer-col a {
  font-size: 13px;
  color: #8D6E63;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  background: var(--bg-footer-dark);
  padding: var(--space-5) 0;
  font-size: 12px;
  color: #6D4C41;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-5);
}

.footer-bottom-links a {
  color: #6D4C41;
}

.footer-bottom-links a:hover {
  color: #BCAAA4;
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(45, 90, 61, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  cursor: pointer;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(45, 90, 61, 0.4);
}

.back-to-top svg {
  width: 18px;
  height: 18px;
}

/* ---------- 滚动揭示动画 ---------- */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #EFEBE9; }
::-webkit-scrollbar-thumb { background: #BCAAA4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #8D6E63; }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .container { max-width: 960px; }

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

  .sidebar {
    order: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }

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

  .category-grid { grid-template-columns: repeat(5, 1fr); }

  .footer-main { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 992px) {
  .container { max-width: 720px; padding: 0 16px; }

  .header-main { flex-wrap: wrap; gap: var(--space-3); }

  .header-search {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
  }

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

  .carousel { aspect-ratio: 16 / 8; }

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

  .category-grid { grid-template-columns: repeat(4, 1fr); }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  body { font-size: 14px; }

  .top-bar { display: none; }

  .logo-text { font-size: 22px; }

  .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .header-actions { display: none; }

  .mobile-toggle { display: flex; }

  .nav-link {
    padding: 0 var(--space-4);
    font-size: 14px;
    height: 44px;
    line-height: 44px;
  }

  .carousel { aspect-ratio: 4 / 3; }

  .carousel-slide-content {
    left: var(--space-4);
    right: var(--space-4);
    top: auto;
    bottom: var(--space-4);
    transform: none;
  }

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

  .carousel-desc { display: none; }

  .section-title h2 { font-size: 18px; }

  .book-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }

  .book-title { font-size: 13px; }

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

  .book-list-cover { width: 80px; height: 120px; font-size: 13px; }

  .book-list-title { font-size: 15px; }

  .book-list-desc { display: none; }

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

  .category-icon { width: 36px; height: 36px; }

  .category-name { font-size: 12px; }

  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom-links {
    justify-content: center;
    flex-wrap: wrap;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .book-grid { grid-template-columns: repeat(2, 1fr); }

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

  .tab-bar { gap: var(--space-3); overflow-x: auto; scrollbar-width: none; }
  .tab-bar::-webkit-scrollbar { display: none; }
  .tab-item { flex-shrink: 0; font-size: 14px; padding: var(--space-3) var(--space-2); }
}