/* ==========================================================================
   哔咔漫画 · 题材导航与阅读参考站
   整站样式表 v1.0
   农业产地风：深绿主色、麦黄强调、米白背景
   ========================================================================== */

/* ==========================================================================
   Base — 基础变量、重置、全局排版
   ========================================================================== */

:root {
  --color-primary: #3E6B4A;
  --color-accent: #E0B64A;
  --color-background: #F5F1E6;
  --color-text: #243B2C;
  --color-aux-green: #E7EFE4;
  --color-border: #D9C87A;
  --color-white: #FFFFFF;
  --color-text-light: #5A6B5E;
  --color-text-lighter: #7C8A7E;

  --font-sans: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: Georgia, "Noto Serif SC", "Songti SC", serif;

  --container-width: 1200px;
  --content-width: 840px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 72px;

  --border-width: 1px;
  --shadow-card: 0 2px 6px rgba(36, 59, 44, 0.08);
  --shadow-hover: 0 6px 16px rgba(36, 59, 44, 0.14);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
}

ul, ol {
  list-style-position: inside;
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
}

/* ==========================================================================
   Layout — 全站骨架：页头、主容器、页脚
   ========================================================================== */

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

/* ---------- 页头 ---------- */

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

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

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 13px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
}

/* ---------- 主导航 ---------- */

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid transparent;
}

.nav-list li a:hover {
  color: var(--color-primary);
  background-color: var(--color-aux-green);
}

.nav-list li a.is-current {
  color: var(--color-primary);
  background-color: var(--color-aux-green);
  border-color: var(--color-border);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- 主容器 ---------- */

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

.home-main {
  max-width: 100%;
}

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-name {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
}

.footer-version {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-serif);
}

.footer-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-nav a {
  display: block;
  padding: 6px 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
}

.footer-nav a:hover {
  color: var(--color-accent);
  background-color: rgba(255, 255, 255, 0.08);
}

.footer-copyright {
  grid-column: 1 / -1;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  font-family: var(--font-serif);
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 24px;
  font-family: var(--font-sans);
  flex-wrap: wrap;
}

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

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

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

.breadcrumb-current {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- 页面标题区 ---------- */

.page-header {
  margin-bottom: 40px;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 24px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

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

/* ==========================================================================
   Components — 通用组件
   ========================================================================== */

/* ---------- 节标题 ---------- */

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

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 640px;
  font-family: var(--font-serif);
}

/* ---------- 按钮 ---------- */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  min-height: 44px;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #2F5238;
  border-color: #2F5238;
  color: var(--color-white);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: var(--color-aux-green);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* ---------- 相关链接 ---------- */

.related-links {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.related-links-label,
.related-title {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.related-links-item {
  display: inline-block;
  margin-right: 16px;
  margin-bottom: 8px;
  padding: 6px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-aux-green);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.related-links-item:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- 卡片通用 ---------- */

.tag-card,
.ranking-col,
.guide-step {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.tag-card:hover,
.ranking-col:hover,
.guide-step:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
}

/* ==========================================================================
   Pages — 首页
   ========================================================================== */

/* ---------- Hero 首屏 ---------- */

.hero-section {
  background-color: var(--color-aux-green);
  border-bottom: 3px solid var(--color-border);
}

.hero-section .hero-content,
.hero-section .hero-figure {
  max-width: var(--container-width);
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 64px 24px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 520px;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.hero-lead {
  font-size: 17px;
  color: var(--color-text-light);
  line-height: 1.8;
  font-family: var(--font-serif);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

/* ---------- 本周更新日程轨道 ---------- */

.update-track-section {
  padding: 64px 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.update-track {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.track-day {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.day-label {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  padding: 6px 4px;
  background-color: var(--color-aux-green);
  border-radius: var(--radius-sm);
}

.day-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  flex: 1;
  min-height: 110px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.day-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card);
}

.card-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.card-text {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  font-family: var(--font-serif);
}

.track-more,
.garden-more,
.ranking-more {
  text-align: right;
  font-family: var(--font-sans);
  font-size: 14px;
}

.track-more a,
.garden-more a,
.ranking-more a {
  color: var(--color-primary);
  font-weight: 600;
}

.track-more a:hover,
.garden-more a:hover,
.ranking-more a:hover {
  color: var(--color-accent);
}

/* ---------- 题材分类花园 ---------- */

.tag-garden-section {
  padding: 64px 24px;
  background-color: var(--color-aux-green);
  border-top: 3px solid var(--color-border);
  border-bottom: 3px solid var(--color-border);
}

.tag-garden-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 32px;
}

.tag-garden-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tag-card {
  display: block;
  overflow: hidden;
}

.tag-figure {
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

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

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

.tag-name {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  padding: 14px 16px 4px;
}

.tag-desc {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 0 16px 16px;
  font-family: var(--font-serif);
  line-height: 1.6;
}

.garden-more {
  max-width: var(--container-width);
  margin: 24px auto 0;
}

/* ---------- 榜单参考 ---------- */

.ranking-reference-section {
  padding: 64px 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

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

.ranking-col {
  padding: 24px 20px;
}

.ranking-name {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

.ranking-scope {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-lighter);
  margin-bottom: 12px;
}

.ranking-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  font-family: var(--font-serif);
}

.ranking-more {
  margin-top: 24px;
}

/* ---------- 阅读指南路径 ---------- */

.guide-path-section {
  padding: 64px 24px;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.guide-path-section .section-header {
  max-width: var(--container-width);
  margin: 0 auto 32px;
}

.guide-steps {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.guide-step {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
}

.step-title {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
}

.step-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  font-family: var(--font-serif);
  flex: 1;
}

.guide-step a {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  align-self: flex-start;
  border-bottom: 1px solid var(--color-accent);
}

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

/* ---------- 版权与反馈条 ---------- */

.copyright-feedback-bar {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
}

.copyright-note {
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
}

.feedback-link {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 8px 18px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.feedback-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ==========================================================================
   Pages — 内页通用
   ========================================================================== */

/* ---------- 题材分类页 tags ---------- */

.group-index {
  margin-bottom: 48px;
  padding: 24px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.anchor-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.anchor-list li a {
  display: inline-block;
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-aux-green);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 40px;
  line-height: 1.4;
}

.anchor-list li a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.tag-groups {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.tag-group {
  scroll-margin-top: 100px;
}

.group-title {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

.group-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
  font-family: var(--font-serif);
}

.tag-card-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.tag-card-list .tag-card {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.tag-card-list .tag-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
}

.tag-card-list .tag-card img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.tag-card-list .tag-name {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  padding: 0;
  margin-bottom: 6px;
}

.tag-tip {
  font-size: 13px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  line-height: 1.6;
}

/* ---------- 最近更新页 update ---------- */

.rhythm-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.rhythm-copy h2 {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.rhythm-copy p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  font-family: var(--font-serif);
}

.rhythm-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.rhythm-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.rhythm-figure figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-lighter);
  background-color: var(--color-white);
  font-family: var(--font-serif);
}

.schedule-track {
  margin-bottom: 48px;
}

.schedule-track h2,
.follow-guide h2 {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  padding-left: 14px;
  position: relative;
}

.schedule-track h2::before,
.follow-guide h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-lead {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  font-family: var(--font-serif);
}

.track-container {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.track-container .track-day {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
}

.day-node {
  text-align: center;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 10px;
}

.day-name {
  display: block;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
}

.day-type {
  display: inline-block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-text-lighter);
  font-family: var(--font-sans);
  background-color: var(--color-aux-green);
  padding: 2px 8px;
  border-radius: 10px;
}

.track-container .day-card {
  border: none;
  padding: 0;
  min-height: 0;
}

.track-container .day-card h3 {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.track-container .day-card p {
  font-size: 13px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  line-height: 1.5;
}

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

.follow-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.follow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
}

.follow-content h3 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.follow-content p {
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
}

.related-topics {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

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

.related-links a {
  display: inline-block;
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-aux-green);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.related-links a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- 榜单解读页 ranking ---------- */

.page-container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.ranking-types h2,
.ranking-howto h2 {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  padding-left: 14px;
  position: relative;
}

.ranking-types h2::before,
.ranking-howto h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  font-family: var(--font-serif);
}

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

.ranking-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.ranking-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.ranking-item-head h3 {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
}

.ranking-badge {
  display: inline-block;
  padding: 4px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-accent);
  border-radius: 20px;
}

.ranking-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-family: var(--font-serif);
}

.ranking-meta {
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.meta-row {
  display: flex;
  gap: 8px;
  font-size: 14px;
  font-family: var(--font-serif);
}

.meta-row dt {
  color: var(--color-text-lighter);
  font-weight: 600;
  min-width: 72px;
  font-family: var(--font-sans);
  font-size: 13px;
}

.meta-row dd {
  color: var(--color-text-light);
}

.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.howto-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.howto-step .step-num {
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: var(--color-text);
  font-size: 15px;
}

.step-body h3 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.step-body p {
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
}

.ranking-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  max-width: 640px;
}

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

.ranking-figure figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-lighter);
  background-color: var(--color-white);
  font-family: var(--font-serif);
}

.related-themes {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.related-themes h2 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

/* ---------- 阅读指南页 guide ---------- */

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 48px;
}

.guide-steps .section-title {
  margin-bottom: 8px;
}

.guide-step-item {
  display: grid;
  grid-template-columns: 56px 1fr 1fr;
  gap: 20px;
  align-items: center;
  padding: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  border-radius: 50%;
}

.step-content h3 {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  line-height: 1.7;
}

.step-desc a {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom: 1px solid var(--color-accent);
}

.step-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.step-media img {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

.guide-tips {
  margin-bottom: 48px;
}

.guide-tips .section-title {
  margin-bottom: 16px;
}

.tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tip-item {
  padding: 12px 16px;
  background-color: var(--color-aux-green);
  border-left: 3px solid var(--color-accent);
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---------- FAQ 页 ---------- */

.faq-groups {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 40px;
}

.faq-group-title {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

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

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

.faq-item summary {
  padding: 16px 20px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
  display: flex;
  align-items: center;
  min-height: 44px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

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

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  line-height: 1.7;
}

.faq-media {
  margin-top: 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  max-width: 640px;
}

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

.faq-media figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-lighter);
  background-color: var(--color-white);
  font-family: var(--font-serif);
}

/* ---------- 关于本站页 about ---------- */

.container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.about-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
}

.about-section .section-title {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  padding-left: 0;
}

.about-section .section-title::before {
  display: none;
}

.about-content p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  font-family: var(--font-serif);
  line-height: 1.8;
}

.about-content p a {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom: 1px solid var(--color-accent);
}

.scope-list,
.copyright-list,
.feedback-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px 0;
}

.scope-list li,
.copyright-list li,
.feedback-list li {
  padding: 10px 16px;
  background-color: var(--color-aux-green);
  border-left: 3px solid var(--color-accent);
  font-size: 14px;
  color: var(--color-text-light);
  font-family: var(--font-serif);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.copyright-list li strong,
.feedback-list li strong {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  display: block;
  margin-bottom: 2px;
}

.about-figure {
  margin-top: 24px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.about-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.about-figure figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-lighter);
  background-color: var(--color-white);
  font-family: var(--font-serif);
}

.related-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-list li a {
  display: inline-block;
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-aux-green);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.related-list li a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ---------- 404 页 ---------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

.error-panel {
  text-align: center;
  max-width: 480px;
  padding: 48px 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.error-code {
  font-family: var(--font-sans);
  font-size: 64px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  font-family: var(--font-serif);
}

.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  min-height: 44px;
}

.error-link:hover {
  background-color: #2F5238;
  color: var(--color-white);
  transform: translateY(-2px);
}

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

/* ---------- 1024px ---------- */

@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    padding: 48px 24px;
    gap: 24px;
  }

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

  .hero-figure img {
    height: 260px;
  }

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

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

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

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

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

  .guide-step-item {
    grid-template-columns: 48px 1fr;
  }

  .step-media {
    grid-column: 1 / -1;
  }

  .rhythm-intro {
    grid-template-columns: 1fr;
  }
}

/* ---------- 768px ---------- */

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 12px 0;
    border-top: 1px solid var(--color-border);
    gap: 0;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list li a {
    padding: 12px 16px;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

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

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

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

  .hero-section {
    padding: 36px 16px;
  }

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

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

  .update-track-section,
  .tag-garden-section,
  .ranking-reference-section,
  .guide-path-section {
    padding: 40px 16px;
  }

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

  .tag-garden-grid,
  .ranking-grid,
  .guide-steps,
  .tag-card-list {
    grid-template-columns: 1fr;
  }

  .copyright-feedback-bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 16px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 32px 16px 20px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 4px;
  }

  .footer-nav a {
    padding: 8px 0;
  }

  .footer-copyright {
    padding-top: 16px;
  }

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

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

  .guide-step-item {
    grid-template-columns: 44px 1fr;
    padding: 16px;
    gap: 12px;
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .step-media img {
    height: 100px;
  }

  .about-section {
    padding: 20px 16px;
  }

  .ranking-item {
    padding: 16px;
  }

  .error-main {
    padding: 48px 16px;
  }

  .error-panel {
    padding: 32px 20px;
  }

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

/* ---------- 480px ---------- */

@media (max-width: 480px) {
  .update-track,
  .track-container {
    grid-template-columns: 1fr;
  }

  .day-card,
  .track-container .day-card {
    min-height: 0;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .meta-row {
    flex-direction: column;
    gap: 2px;
  }

  .meta-row dt {
    min-width: 0;
  }

  .follow-item {
    flex-direction: column;
    gap: 8px;
  }
}