/* ==========================================================================
   base — 全局基础样式
   ========================================================================== */

:root {
  --color-bg: #0e1a2b;
  --color-bg-deep: #0a1420;
  --color-bg-card: #152238;
  --color-bg-card-hover: #1b2a45;
  --color-accent: #39ff88;
  --color-amber: #ffb347;
  --color-text: #f5f5f0;
  --color-text-dim: #9fb0c3;
  --color-text-mute: #6b7c91;
  --color-danger: #c73e3e;
  --color-border: #22334d;
  --color-border-light: #2e4261;
  --font-mono: "Courier New", "Noto Sans Mono", Consolas, monospace;
  --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-mono);
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

p {
  margin-bottom: 12px;
}

/* ==========================================================================
   layout — 全站骨架
   ========================================================================== */

.site-header {
  background-color: var(--color-bg-deep);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  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: 28px;
  height: 28px;
  background-color: var(--color-accent);
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}

.brand-mark::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 6px;
  width: 8px;
  height: 8px;
  background-color: var(--color-bg-deep);
  box-shadow: 8px 8px 0 var(--color-bg-deep);
}

.brand-name {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 1px;
}

.brand-name:hover {
  color: var(--color-accent);
}

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

.site-nav .nav-list a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-dim);
  border: 1px solid transparent;
}

.site-nav .nav-list a:hover {
  color: var(--color-accent);
  border-color: var(--color-border);
}

.site-nav .nav-list a.is-current {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: rgba(57, 255, 136, 0.08);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 8px 10px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
}

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

.site-main.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

/* 面包屑 */
.breadcrumb {
  padding: 20px 0 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-mute);
}

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

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-text-mute);
}

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

/* 页面标题区 */
.page-header {
  padding: 20px 0 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}

.page-title {
  font-size: 28px;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.page-description {
  color: var(--color-text-dim);
  font-size: 15px;
  max-width: 720px;
}

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

/* 区块标题 */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  border-left: 3px solid var(--color-accent);
  padding-left: 12px;
}

.section-head h2 {
  color: var(--color-accent);
}

.section-head p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 0;
}

.section-more {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
  white-space: nowrap;
}

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

/* ==========================================================================
   components — 页脚
   ========================================================================== */

.site-footer {
  background-color: var(--color-bg-deep);
  border-top: 2px solid var(--color-border);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand-name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.footer-brand p:not(.footer-brand-name) {
  color: var(--color-text-dim);
  font-size: 14px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  color: var(--color-text-dim);
  font-size: 14px;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 16px 24px;
  text-align: center;
  color: var(--color-text-mute);
  font-family: var(--font-mono);
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

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

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

/* 首屏分类目录 */
.hero-category {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-amber);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  display: inline-block;
}

.hero-content h1 {
  font-size: 32px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero-lead {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 24px;
  max-width: 380px;
}

.hero-cta {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-bg-deep);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  padding: 10px 22px;
  border: 2px solid var(--color-accent);
}

.hero-cta:hover {
  background-color: transparent;
  color: var(--color-accent);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.category-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 16px;
  transition: border-color var(--transition), background-color var(--transition);
}

.category-card:hover {
  border-color: var(--color-accent);
  background-color: var(--color-bg-card-hover);
}

.category-icon {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
  margin-bottom: 8px;
}

.category-name {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

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

.category-desc {
  font-size: 13px;
  color: var(--color-text-mute);
  margin: 0;
}

/* 编辑推荐 */
.editor-picks {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.pick-card {
  display: flex;
  gap: 16px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 16px;
  transition: border-color var(--transition);
}

.pick-card:hover {
  border-color: var(--color-amber);
}

.pick-cover {
  width: 96px;
  height: 128px;
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--color-bg-deep);
}

.pick-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.pick-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-amber);
  border: 1px solid var(--color-border-light);
  padding: 2px 8px;
  align-self: flex-start;
}

.pick-info h3 {
  font-size: 16px;
  color: var(--color-text);
}

.pick-info p {
  font-size: 13px;
  color: var(--color-text-dim);
  margin: 0;
  flex: 1;
}

.pick-info a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.pick-info a:hover {
  color: var(--color-amber);
}

/* 最近更新 */
.recent-updates {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

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

.update-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-mute);
  flex-shrink: 0;
  width: 90px;
}

.update-item a {
  flex: 1;
  color: var(--color-text);
  font-weight: 600;
}

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

.update-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-amber);
  border: 1px solid var(--color-border-light);
  padding: 2px 8px;
  flex-shrink: 0;
}

.update-chapter {
  font-size: 13px;
  color: var(--color-text-mute);
  flex-shrink: 0;
  font-family: var(--font-mono);
}

/* 热门榜单 */
.hot-ranking {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.ranking-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-amber);
  width: 40px;
  flex-shrink: 0;
  text-align: center;
}

.ranking-item:nth-child(1) .ranking-num,
.ranking-item:nth-child(2) .ranking-num,
.ranking-item:nth-child(3) .ranking-num {
  color: var(--color-accent);
}

.ranking-item img {
  width: 48px;
  height: 64px;
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--color-bg-deep);
}

.ranking-item a {
  flex: 1;
  color: var(--color-text);
  font-weight: 600;
}

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

.ranking-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  flex-shrink: 0;
}

/* 阅读路径 */
.reading-path {
  padding: 48px 0;
}

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

.step-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 24px;
  position: relative;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 8px;
}

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

.step-item a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
}

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

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

.page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

.sidebar-left .page-layout {
  grid-template-columns: 260px 1fr;
}

.category-index {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
  position: sticky;
  top: 84px;
}

.category-index h2 {
  font-size: 16px;
  color: var(--color-amber);
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
}

.category-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.category-list a {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  display: inline-block;
}

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

.category-list .count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  margin-left: 8px;
}

.category-list .direction {
  font-size: 13px;
  color: var(--color-text-mute);
  margin-top: 4px;
  margin-bottom: 0;
  line-height: 1.5;
}

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

.genre-section {
  margin-bottom: 40px;
}

.genre-section h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 8px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.genre-desc {
  color: var(--color-text-dim);
  font-size: 14px;
  margin-bottom: 16px;
}

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

.work-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 12px;
  transition: border-color var(--transition);
}

.work-card:hover {
  border-color: var(--color-accent);
}

.work-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  margin-bottom: 12px;
  background-color: var(--color-bg-deep);
}

.work-card h3 {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 6px;
}

.work-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-amber);
  margin-bottom: 8px;
}

.work-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.work-link:hover {
  color: var(--color-amber);
}

.reading-direction {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.reading-direction h2 {
  color: var(--color-amber);
  font-size: 18px;
  margin-bottom: 12px;
}

.reading-direction > p {
  color: var(--color-text-dim);
  font-size: 14px;
}

.direction-list {
  margin: 16px 0;
}

.direction-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.direction-list a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
}

.direction-list a:hover {
  color: var(--color-amber);
}

.reading-direction p:last-child {
  margin-bottom: 0;
}

.reading-direction p a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
  margin-right: 16px;
}

.reading-direction p a:hover {
  color: var(--color-accent);
}

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

.section-title {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 20px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.update-group {
  margin-bottom: 32px;
}

.update-date {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-amber);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

.update-items {
  display: flex;
  flex-direction: column;
}

.update-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.update-thumb {
  width: 56px;
  height: 72px;
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--color-bg-deep);
}

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

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

.update-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-amber);
}

.update-time {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-mute);
  flex-shrink: 0;
}

.update-summary {
  margin-bottom: 40px;
}

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

.summary-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.summary-card h3 {
  color: var(--color-amber);
  font-size: 16px;
  margin-bottom: 8px;
}

.summary-card p {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-bottom: 12px;
}

.summary-card a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
}

.summary-card a:hover {
  color: var(--color-amber);
}

.update-tip {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-amber);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.tip-content {
  flex: 1;
  min-width: 240px;
}

.tip-content h2 {
  color: var(--color-amber);
  font-size: 18px;
  margin-bottom: 8px;
}

.tip-content p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 0;
}

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

.tip-btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 8px 18px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.tip-btn:hover {
  background-color: var(--color-accent);
  color: var(--color-bg-deep);
}

/* ==========================================================================
   pages — 热门榜单页
   ========================================================================== */

.section-heading {
  margin-bottom: 20px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.section-heading h2 {
  color: var(--color-accent);
  font-size: 20px;
}

.section-heading p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 0;
}

.overall-ranking {
  margin-bottom: 48px;
}

.overall-list {
  display: flex;
  flex-direction: column;
}

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

.overall-list .ranking-item:last-child {
  border-bottom: none;
}

.rank-number {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-amber);
  width: 44px;
  flex-shrink: 0;
  text-align: center;
}

.overall-list .ranking-item:nth-child(1) .rank-number,
.overall-list .ranking-item:nth-child(2) .rank-number,
.overall-list .ranking-item:nth-child(3) .rank-number {
  color: var(--color-accent);
  font-size: 26px;
}

.rank-cover {
  width: 56px;
  height: 72px;
  flex-shrink: 0;
  margin: 0;
}

.rank-cover img {
  width: 56px;
  height: 72px;
  object-fit: cover;
  background-color: var(--color-bg-deep);
}

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

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

.rank-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-amber);
  margin: 0;
}

.rank-heat {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.genres-ranking {
  margin-bottom: 48px;
}

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

.genre-rank-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.genre-rank-card h3 {
  color: var(--color-amber);
  font-size: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
}

.mini-rank-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text);
}

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

.mini-rank-num {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  width: 24px;
  flex-shrink: 0;
  text-align: center;
}

.trending-up {
  margin-bottom: 48px;
}

.trending-list {
  display: flex;
  flex-direction: column;
}

.trending-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.trend-icon {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-accent);
  width: 32px;
  flex-shrink: 0;
  text-align: center;
}

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

.trend-title {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 4px;
}

.trend-tags {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  margin: 0;
}

.trend-value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-amber);
  flex-shrink: 0;
}

.ranking-guide {
  margin-bottom: 0;
}

.guide-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.guide-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 8px 18px;
  border: 1px solid var(--color-border-light);
  color: var(--color-text-dim);
}

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

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

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

.guide-section h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

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

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

.step-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 24px;
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-accent);
  display: block;
  margin-bottom: 12px;
}

.step-card h3 {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-bottom: 12px;
}

.step-card p a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-amber);
}

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

.serial-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 32px;
  align-items: start;
}

.guide-media {
  margin: 0;
}

.guide-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background-color: var(--color-bg-deep);
}

.guide-media figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  padding-top: 8px;
}

.serial-text p {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 16px;
}

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

.route-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.route-card h3 {
  color: var(--color-amber);
  font-size: 16px;
  margin-bottom: 8px;
}

.route-card p {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-bottom: 8px;
}

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

.related-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.related-card h3 {
  margin-bottom: 8px;
}

.related-card h3 a {
  color: var(--color-accent);
  font-size: 16px;
}

.related-card h3 a:hover {
  color: var(--color-amber);
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-dim);
  margin: 0;
}

/* ==========================================================================
   pages — 帮助反馈页
   ========================================================================== */

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

.faq-section h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.content-media-inline {
  margin: 16px 0;
  max-width: 640px;
}

.content-media-inline img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background-color: var(--color-bg-deep);
}

.content-media-inline figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  padding-top: 8px;
}

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

.faq-group {
  margin-bottom: 32px;
}

.faq-group-title {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--color-amber);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}

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

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

.faq-item summary {
  padding: 14px 18px;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--color-accent);
}

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

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

.faq-answer {
  padding: 0 18px 16px;
  border-top: 1px solid var(--color-border);
}

.faq-answer p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 12px 0 0;
}

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

.feedback-section h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.feedback-content {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.feedback-content > p {
  color: var(--color-text-dim);
  font-size: 15px;
}

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

.feedback-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.feedback-list a {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
}

.feedback-list a:hover {
  color: var(--color-amber);
}

.boundary-section {
  margin-bottom: 0;
}

.boundary-section h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

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

.boundary-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 20px;
}

.boundary-card h3 {
  color: var(--color-amber);
  font-size: 16px;
  margin-bottom: 12px;
}

.boundary-card ul li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-text-dim);
  position: relative;
  padding-left: 16px;
}

.boundary-card ul li::before {
  content: ">";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.boundary-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-mute);
}

.boundary-note a {
  font-family: var(--font-mono);
  color: var(--color-amber);
}

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

/* ==========================================================================
   pages — 站点说明页
   ========================================================================== */

.about-intro {
  margin-bottom: 48px;
}

.about-intro h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 16px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.about-intro-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 32px;
  align-items: start;
}

.about-figure {
  margin: 0;
}

.about-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background-color: var(--color-bg-deep);
}

.about-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-mute);
  padding-top: 8px;
}

.about-text p {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 16px;
}

.content-scope {
  margin-bottom: 48px;
}

.content-scope h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-amber);
  padding-left: 12px;
}

.scope-lead,
.boundary-lead {
  color: var(--color-text-dim);
  font-size: 15px;
  margin-bottom: 20px;
}

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

.scope-list li {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 16px 20px;
}

.scope-list h3 {
  color: var(--color-amber);
  font-size: 15px;
  margin-bottom: 6px;
}

.scope-list p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin: 0;
}

.boundaries {
  margin-bottom: 48px;
}

.boundaries h2 {
  color: var(--color-accent);
  font-size: 20px;
  margin-bottom: 12px;
  border-left: 3px solid var(--color-danger);
  padding-left: 12px;
}

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

.boundary-list li {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-danger);
  padding: 14px 20px;
  font-size: 14px;
  color: var(--color-text-dim);
}

.boundary-list strong {
  color: var(--color-text);
  font-weight: 600;
}

.cooperation-entry {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.cooperation-entry h2 {
  color: var(--color-amber);
  font-size: 18px;
  margin-bottom: 12px;
}

.cooperation-entry p {
  color: var(--color-text-dim);
  font-size: 14px;
  margin-bottom: 8px;
}

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

.error-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.error-section {
  max-width: 560px;
  text-align: center;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 24px;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 10px 22px;
  border: 1px solid var(--color-accent);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg-deep);
  font-weight: 700;
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-accent);
}

.btn-secondary {
  color: var(--color-text-dim);
  border-color: var(--color-border-light);
}

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

/* ==========================================================================
   responsive — 响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-category {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-content {
    align-items: flex-start;
  }

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

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

  .picks-grid .pick-card:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - 10px);
  }

  .pick-card {
    flex-direction: column;
  }

  .pick-cover {
    width: 100%;
    height: 160px;
  }

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

  .summary-grid .summary-card:last-child,
  .genre-rank-grid .genre-rank-card:last-child {
    grid-column: 1 / -1;
  }

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

  .route-list .route-card:last-child,
  .related-list .related-card:last-child {
    grid-column: 1 / -1;
    max-width: calc(50% - 10px);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-deep);
    border-bottom: 2px solid var(--color-border);
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px;
  }

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

  .site-nav .nav-list a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-border);
    border-left: none;
    border-right: none;
    border-top: none;
  }

  .site-nav .nav-list li:last-child a {
    border-bottom: none;
  }

  .site-main.inner-main,
  .home-main {
    padding: 0 16px 40px;
  }

  .breadcrumb {
    padding-top: 16px;
  }

  .page-header {
    padding: 16px 0 20px;
    margin-bottom: 24px;
  }

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

  .hero-category {
    padding: 32px 0;
  }

  .hero-content h1 {
    font-size: 26px;
  }

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

  .category-card {
    padding: 12px;
  }

  .editor-picks,
  .recent-updates,
  .hot-ranking,
  .reading-path {
    padding: 32px 0;
  }

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

  .picks-grid .pick-card:last-child {
    grid-column: auto;
    max-width: none;
  }

  .pick-card {
    flex-direction: row;
  }

  .pick-cover {
    width: 96px;
    height: 128px;
  }

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

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

  .category-index {
    position: static;
    order: 2;
  }

  .category-content {
    order: 1;
  }

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

  .work-card img {
    height: 120px;
  }

  .serial-content,
  .about-intro-content {
    grid-template-columns: 1fr;
  }

  .guide-media img,
  .about-figure img {
    max-height: 200px;
    object-fit: cover;
  }

  .steps-list,
  .route-list,
  .related-list {
    grid-template-columns: 1fr;
  }

  .route-list .route-card:last-child,
  .related-list .related-card:last-child {
    grid-column: auto;
    max-width: none;
  }

  .summary-grid,
  .genre-rank-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid .summary-card:last-child,
  .genre-rank-grid .genre-rank-card:last-child {
    grid-column: auto;
  }

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

  .update-date {
    width: auto;
    font-size: 12px;
  }

  .update-item a {
    flex-basis: calc(100% - 100px);
  }

  .update-time {
    width: 100%;
    padding-left: 0;
  }

  .update-tip {
    flex-direction: column;
    align-items: flex-start;
  }

  .tip-links {
    width: 100%;
  }

  .tip-btn {
    flex: 1;
    text-align: center;
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 16px 20px;
  }

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

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

  .error-code {
    font-size: 56px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

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

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

  .work-card img {
    height: 160px;
  }

  .pick-card {
    flex-direction: column;
  }

  .pick-cover {
    width: 100%;
    height: 160px;
  }

  .update-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .update-item a {
    flex-basis: auto;
    width: 100%;
  }

  .update-time {
    width: auto;
  }

  .overall-list .ranking-item {
    flex-wrap: wrap;
    gap: 8px;
  }

  .rank-number {
    width: 32px;
    font-size: 18px;
  }

  .rank-cover {
    width: 44px;
    height: 56px;
  }

  .rank-cover img {
    width: 44px;
    height: 56px;
  }

  .rank-heat {
    margin-left: auto;
  }

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

  .trend-value {
    margin-left: auto;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .error-actions {
    flex-direction: column;
  }

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