/* ==========================================================================
   base — 全站基础样式
   ========================================================================== */

:root {
  --color-primary: #3B2A6B;
  --color-primary-light: #4A3784;
  --color-bg: #F5F2EC;
  --color-surface: #FFFFFF;
  --color-accent: #E64A8A;
  --color-accent-soft: #FCE4EF;
  --color-note: #3BA67E;
  --color-note-soft: #E0F2EA;
  --color-text: #2B2B33;
  --color-text-secondary: #5C5B66;
  --color-text-muted: #8A8994;
  --color-border: #E4E0D8;
  --color-border-dark: #C9C4BA;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;

  --container-width: 1200px;
  --header-height: 72px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 3px rgba(43, 43, 51, 0.06), 0 4px 14px rgba(43, 43, 51, 0.04);
  --shadow-hover: 0 6px 20px rgba(43, 43, 51, 0.1);

  --swatch-red: #E84A4A;
  --swatch-pink: #F47CB8;
  --swatch-purple: #8B5FBF;
  --swatch-green: #3BA67E;
  --swatch-blue: #4A90D9;
  --swatch-orange: #E88A3A;
  --swatch-yellow: #D9B23A;
  --swatch-mist: #7FA8C9;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary);
}

h1 {
  font-size: 40px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

/* ==========================================================================
   layout — 全站布局骨架
   ========================================================================== */

.site-header {
  background-color: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(43, 43, 51, 0.16);
}

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

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

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent);
  position: relative;
  flex-shrink: 0;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 2px solid #fff;
  border-radius: 2px;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.12);
}

.nav-list li a.is-current {
  color: #FFFFFF;
  background-color: rgba(255, 255, 255, 0.18);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  align-items: center;
  gap: 8px;
}

.nav-toggle-icon {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #FFFFFF;
  position: relative;
  border-radius: 1px;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background-color: #FFFFFF;
  border-radius: 1px;
  transition: transform 0.2s ease;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

.nav-toggle-label {
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 600;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.site-main {
  min-height: calc(100vh - var(--header-height) - 320px);
}

.site-main.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* 面包屑 */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

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

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

.breadcrumb-sep {
  color: var(--color-border-dark);
  font-size: 12px;
}

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

/* 页面标题区 */

.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 720px;
}

/* 页脚 */

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 16px;
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  margin-bottom: 0;
}

/* ==========================================================================
   components — 通用组件
   ========================================================================== */

.section-title {
  font-size: 24px;
  margin-bottom: 12px;
}

.section-intro,
.section-lead {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 720px;
}

/* CTA 按钮 */

.cta-button {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.cta-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.cta-primary:hover {
  background-color: #D13A78;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(230, 74, 138, 0.3);
}

.cta-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.cta-secondary:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

/* 404 页按钮 */

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #D13A78;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

/* ==========================================================================
   pages — 首页
   ========================================================================== */

.home-main {
  overflow: visible;
}

/* hero 区 */

.hero-section {
  background-color: var(--color-bg);
  padding: 56px 24px 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  max-width: var(--container-width);
  margin: 0 auto;
  align-items: center;
}

.hero-content {
  grid-column: 1 / 2;
}

.hero-content h1 {
  font-size: 40px;
  margin-bottom: 16px;
}

.hero-slogan {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.hero-lead {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

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

.hero-media {
  grid-column: 2 / 3;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-entry-cards {
  grid-column: 3 / 4;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.entry-card {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

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

.entry-card-title {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.entry-card-desc {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 核心事实区 */

.fact-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.fact-section .section-title {
  text-align: center;
}

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

.fact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow 0.2s ease;
}

.fact-card:hover {
  box-shadow: var(--shadow-hover);
}

.fact-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.fact-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* 套色分类入口 */

.category-color-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
}

.category-color-section .section-title {
  text-align: center;
}

.category-color-section .section-intro {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.color-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.color-cat {
  display: block;
  border-radius: var(--radius-md);
  padding: 28px 20px;
  color: #FFFFFF;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.color-cat:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  color: #FFFFFF;
}

.color-cat-name {
  display: block;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.color-cat-desc {
  display: block;
  font-size: 13px;
  opacity: 0.9;
  line-height: 1.6;
}

.color-cat-hot {
  background-color: var(--swatch-red);
}

.color-cat-love {
  background-color: var(--swatch-pink);
}

.color-cat-mystery {
  background-color: var(--swatch-purple);
}

.color-cat-slice {
  background-color: var(--swatch-green);
}

.color-cat-sci {
  background-color: var(--swatch-blue);
}

.color-cat-fantasy {
  background-color: var(--swatch-orange);
}

.color-cat-campus {
  background-color: var(--swatch-yellow);
}

.color-cat-heal {
  background-color: var(--swatch-mist);
}

/* 下一屏预告条 */

.next-screen-tip {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.tip-arrow {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(45deg);
  animation: tip-bounce 1.6s ease-in-out infinite;
}

@keyframes tip-bounce {
  0%, 100% {
    transform: rotate(45deg) translate(0, 0);
  }
  50% {
    transform: rotate(45deg) translate(4px, 4px);
  }
}

/* 封面墙 */

.cover-wall-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
}

.cover-wall-section .section-title {
  text-align: center;
}

.cover-wall-section .section-intro {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

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

.cover-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.cover-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.cover-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.cover-card figcaption {
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

/* 编辑推荐榜与本地记录双栏 */

.rank-record-duo {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
}

.rank-record-duo .section-title {
  text-align: center;
  margin-bottom: 28px;
}

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

.rank-preview,
.library-preview {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.rank-preview h3,
.library-preview h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

.rank-list {
  margin-bottom: 16px;
}

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

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

.rank-list li a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.rank-list li a:hover {
  color: var(--color-accent);
}

.rank-more-link,
.library-enter-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.rank-more-link:hover,
.library-enter-link:hover {
  color: var(--color-primary);
}

.library-feature-list {
  margin-bottom: 20px;
}

.library-feature-list li {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.library-feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-note);
}

/* 题材标签精选组 */

.tag-preview-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px;
}

.tag-preview-section .section-title {
  text-align: center;
}

.tag-preview-section .section-intro {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.tag-bubble-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.tag-bubble {
  display: inline-block;
  padding: 8px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.tag-bubble:hover {
  background-color: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.tag-more-link {
  text-align: center;
}

.tag-more-link a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.tag-more-link a:hover {
  color: var(--color-primary);
}

/* 相关链接 */

.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  color: var(--color-text-muted);
}

.related-links-item {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
}

.related-links-item:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ==========================================================================
   pages — 分类目录页
   ========================================================================== */

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

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

.category-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.category-swatch {
  height: 8px;
}

.swatch-red {
  background-color: var(--swatch-red);
}

.swatch-pink {
  background-color: var(--swatch-pink);
}

.swatch-purple {
  background-color: var(--swatch-purple);
}

.swatch-green {
  background-color: var(--swatch-green);
}

.swatch-blue {
  background-color: var(--swatch-blue);
}

.swatch-orange {
  background-color: var(--swatch-orange);
}

.swatch-yellow {
  background-color: var(--swatch-yellow);
}

.swatch-mist {
  background-color: var(--swatch-mist);
}

.category-card-media {
  padding: 8px 8px 0;
}

.category-card-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.category-card-body {
  padding: 16px;
}

.category-card-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.category-card-body p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  line-height: 1.7;
}

.category-usage-section,
.hierarchy-section {
  margin-top: 48px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.category-usage-section p,
.hierarchy-section p {
  color: var(--color-text-secondary);
  max-width: 760px;
}

.category-usage-section a,
.hierarchy-note a {
  color: var(--color-accent);
  font-weight: 500;
}

.category-usage-section a:hover,
.hierarchy-note a:hover {
  color: var(--color-primary);
}

.hierarchy-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
  margin-bottom: 24px;
}

.hierarchy-step {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}

.hierarchy-step h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.hierarchy-step p {
  font-size: 13px;
  margin-bottom: 0;
}

.hierarchy-note {
  font-size: 14px;
  color: var(--color-text-muted);
}

/* ==========================================================================
   pages — 题材标签页
   ========================================================================== */

.tag-scope-section,
.tag-cloud-section,
.tag-demo-section,
.tag-guide-section {
  margin-bottom: 48px;
}

.tag-scope-content p {
  color: var(--color-text-secondary);
  max-width: 760px;
}

.tag-tip-bar {
  background-color: var(--color-note-soft);
  border-left: 4px solid var(--color-note);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 48px;
}

.tag-tip-bar p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.tag-tip-bar strong {
  color: var(--color-note);
}

.tag-tip-bar a {
  color: var(--color-note);
  font-weight: 600;
}

.tag-tip-bar a:hover {
  color: var(--color-primary);
}

.tag-cloud-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.tag-color-group {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.tag-group-name {
  font-size: 15px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.tag-group-red .tag-group-name {
  color: var(--swatch-red);
  border-bottom-color: var(--swatch-red);
}

.tag-group-pink .tag-group-name {
  color: var(--swatch-pink);
  border-bottom-color: var(--swatch-pink);
}

.tag-group-purple .tag-group-name {
  color: var(--swatch-purple);
  border-bottom-color: var(--swatch-purple);
}

.tag-group-green .tag-group-name {
  color: var(--swatch-green);
  border-bottom-color: var(--swatch-green);
}

.tag-group-blue .tag-group-name {
  color: var(--swatch-blue);
  border-bottom-color: var(--swatch-blue);
}

.tag-group-orange .tag-group-name {
  color: var(--swatch-orange);
  border-bottom-color: var(--swatch-orange);
}

.tag-group-yellow .tag-group-name {
  color: var(--swatch-yellow);
  border-bottom-color: var(--swatch-yellow);
}

.tag-group-mist .tag-group-name {
  color: var(--swatch-mist);
  border-bottom-color: var(--swatch-mist);
}

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

.tag-bubble-list .tag-bubble {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tag-bubble-list .tag-bubble a {
  color: inherit;
}

.tag-bubble-list .tag-bubble:hover {
  background-color: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.tag-demo-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.tag-demo-card:hover {
  box-shadow: var(--shadow-hover);
}

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

.tag-demo-body {
  padding: 16px;
}

.tag-demo-title {
  font-size: 15px;
  margin-bottom: 6px;
}

.tag-demo-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.tag-demo-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
}

.tag-demo-link:hover {
  color: var(--color-primary);
}

.tag-guide-content p {
  color: var(--color-text-secondary);
  max-width: 760px;
}

.tag-guide-content a {
  color: var(--color-accent);
  font-weight: 500;
}

.tag-guide-content a:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   pages — 阅读榜单页
   ========================================================================== */

.rank-section {
  margin-bottom: 48px;
}

.rank-list .rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 12px;
  transition: box-shadow 0.2s ease;
}

.rank-list .rank-item:hover {
  box-shadow: var(--shadow-hover);
}

.rank-number {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 36px;
  text-align: center;
}

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

.rank-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.rank-reason {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.rank-list .rank-item img {
  width: 80px;
  height: 56px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

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

.rank-note h2,
.rank-guide h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.rank-note p,
.rank-guide p {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 0;
}

.rank-guide a {
  color: var(--color-accent);
  font-weight: 500;
}

.rank-guide a:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   pages — 阅读记录页
   ========================================================================== */

.local-data-note {
  background-color: var(--color-note-soft);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
}

.local-data-note h2 {
  font-size: 16px;
  color: var(--color-note);
  margin-bottom: 8px;
}

.local-data-note p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.record-status-panel {
  margin-bottom: 40px;
}

.status-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.status-item {
  text-align: center;
}

.status-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.status-value {
  display: block;
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
}

.status-tip {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 12px;
}

.record-list-section {
  margin-bottom: 40px;
}

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

.record-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: box-shadow 0.2s ease;
}

.record-item:hover {
  box-shadow: var(--shadow-hover);
}

.record-cover {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

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

.record-name {
  font-size: 15px;
  margin-bottom: 4px;
}

.record-progress,
.record-time {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.record-status {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-note);
  background-color: var(--color-note-soft);
  padding: 4px 12px;
  border-radius: 999px;
  flex-shrink: 0;
}

.list-footnote {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 16px;
}

.list-footnote a {
  color: var(--color-accent);
}

.clear-record-section {
  margin-bottom: 40px;
}

.clear-record-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
}

.clear-record-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.clear-record-btn {
  display: inline-block;
  background-color: var(--color-note);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.clear-record-btn:hover {
  background-color: #2E8A67;
}

.clear-tip {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 12px;
  margin-bottom: 0;
}

.related-guide-section {
  margin-bottom: 32px;
}

.guide-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.guide-links a {
  display: inline-block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

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

.guide-steps-section {
  margin-bottom: 48px;
}

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

.guide-step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: box-shadow 0.2s ease;
}

.guide-step-card:hover {
  box-shadow: var(--shadow-hover);
}

.step-number {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.guide-step-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.guide-step-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

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

.step-link:hover {
  color: var(--color-primary);
}

.faq-section {
  margin-bottom: 48px;
}

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

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

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  position: relative;
  padding-right: 40px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.guide-links-section {
  margin-bottom: 32px;
}

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

.guide-link-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.guide-link-card:hover {
  box-shadow: var(--shadow-hover);
}

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

.guide-link-card h3 {
  font-size: 15px;
  padding: 16px 16px 0;
  margin-bottom: 6px;
}

.guide-link-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 0 16px;
  margin-bottom: 12px;
}

.guide-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 0 16px 16px;
}

.guide-link:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   pages — 关于本站页
   ========================================================================== */

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

.about-section h2 {
  font-size: 20px;
  margin-bottom: 16px;
}

.about-section p {
  color: var(--color-text-secondary);
  max-width: 760px;
}

.org-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.org-media img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

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

.boundary-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.boundary-items li {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  position: relative;
  padding-left: 36px;
}

.boundary-items li::before {
  content: "×";
  position: absolute;
  left: 14px;
  top: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
}

/* ==========================================================================
   pages — 404 页
   ========================================================================== */

.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-section {
  text-align: center;
}

.error-code {
  font-family: var(--font-num);
  font-size: 96px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-desc {
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

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

/* ==========================================================================
   responsive — 响应式断点
   ========================================================================== */

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

  .hero-content {
    grid-column: 1 / 3;
  }

  .hero-media {
    grid-column: 1 / 2;
  }

  .hero-entry-cards {
    grid-column: 2 / 3;
  }

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

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

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

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

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

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

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

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

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

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    box-shadow: 0 8px 16px rgba(43, 43, 51, 0.2);
    display: block;
    visibility: visible;
    opacity: 1;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    padding: 12px 16px 20px;
    gap: 2px;
  }

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

  .nav-list li a {
    padding: 12px 16px;
    font-size: 15px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-main.inner-main {
    padding: 24px 16px 48px;
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px;
  }

  .hero-content {
    grid-column: 1 / 2;
  }

  .hero-media {
    grid-column: 1 / 2;
  }

  .hero-entry-cards {
    grid-column: 1 / 2;
  }

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

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

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

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

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

  .hierarchy-steps {
    grid-template-columns: 1fr;
  }

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

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

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

  .guide-links-grid {
    grid-template-columns: 1fr;
  }

  .org-wrap {
    grid-template-columns: 1fr;
  }

  .boundary-items {
    grid-template-columns: 1fr;
  }

  .status-card {
    grid-template-columns: 1fr;
  }

  .rank-list .rank-item {
    flex-wrap: wrap;
  }

  .rank-list .rank-item img {
    width: 100%;
    height: 120px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 32px;
  }

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

  .color-category-grid {
    grid-template-columns: 1fr;
  }

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

  .category-card-grid {
    grid-template-columns: 1fr;
  }

  .tag-cloud-group {
    grid-template-columns: 1fr;
  }

  .tag-demo-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    padding: 12px 16px;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .cta-button {
    text-align: center;
  }

  .rank-list .rank-item {
    padding: 14px;
  }

  .record-item {
    flex-wrap: wrap;
  }

  .record-status {
    margin-left: auto;
  }

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

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

  .about-section {
    padding: 24px;
  }
}