/* ==========================================================================
   51吃瓜网最新 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base —— 变量、重置、排版
   -------------------------------------------------------------------------- */
:root {
  --bg: #F6F8FC;
  --surface: #FFFFFF;
  --primary: #FF6B8A;
  --primary-dark: #E85173;
  --accent: #4A7DFF;
  --accent-dark: #3462D8;
  --highlight: #FFC94D;
  --text: #1F2430;
  --text-soft: #5C6577;
  --line: #E3E8F2;
  --note-bg: #EEF4FF;
  --zebra: #F9FBFF;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-pill: 999px;
  --container: 1160px;
  --aside-w: 300px;
  --gap: 32px;
  --shadow-card: 0 1px 2px rgba(31, 36, 48, .05), 0 8px 20px -14px rgba(31, 36, 48, .22);
  --shadow-card-hover: 0 4px 10px rgba(31, 36, 48, .07), 0 16px 30px -16px rgba(31, 36, 48, .28);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 .6em;
  line-height: 1.35;
  font-weight: 600;
  color: var(--text);
}

h1 {
  font-size: clamp(26px, 4.6vw, 38px);
  font-weight: 700;
  letter-spacing: 0;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color .16s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-dark);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.6;
}

table {
  border-collapse: collapse;
  width: 100%;
}

caption {
  padding: 0 0 10px;
  color: var(--text-soft);
  font-size: 13.5px;
  text-align: left;
}

th,
td {
  text-align: left;
  vertical-align: top;
}

button {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   2. layout —— 骨架：页头、导航、主容器、面包屑、页脚
   -------------------------------------------------------------------------- */

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(6px);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  flex: none;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0;
}

.brand::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 8px;
  border-radius: 3px;
  background: var(--primary);
  vertical-align: 2px;
}

.brand:hover {
  color: var(--primary-dark);
}

/* 主导航 */
.site-nav {
  margin-left: auto;
}

.site-nav ul {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}

.site-nav li + li {
  border-left: 1px solid var(--line);
}

.site-nav a {
  display: block;
  padding: 10px 14px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.4;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--text);
  border-bottom-color: rgba(74, 125, 255, .4);
}

.site-nav a.is-current {
  color: var(--text);
  font-weight: 600;
  border-bottom-color: var(--primary);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  min-height: 48px;
  padding: 0 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle-text {
  font-size: 14px;
  color: var(--text);
}

/* 主内容容器 */
.site-main {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.home-main {
  padding-top: 0;
}

/* 面包屑 */
.breadcrumb {
  margin: 0 0 18px;
  color: var(--text-soft);
  font-size: 14px;
}

.breadcrumb ol,
.breadcrumb > a,
.breadcrumb span {
  display: inline;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

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

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

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

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

/* 页面标题区 */
.page-header {
  margin: 0 0 22px;
}

.page-title {
  margin: 0 0 10px;
  font-size: clamp(26px, 4.6vw, 38px);
  font-weight: 700;
  color: var(--text);
}

/* 页脚 */
.site-footer {
  margin-top: 24px;
  padding: 40px 0 32px;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(4, minmax(140px, 1fr));
  gap: 28px 24px;
}

.footer-brand-name {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.footer-brand-desc {
  margin: 0 0 10px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.7;
}

.footer-copy {
  margin: 0;
  color: var(--text-soft);
  font-size: 13px;
}

.footer-group h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

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

.footer-group a {
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.5;
}

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

/* --------------------------------------------------------------------------
   3. components —— 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color .16s ease, color .16s ease, border-color .16s ease, transform .16s ease;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--surface);
  color: var(--accent);
  border-color: var(--line);
}

.btn-ghost:hover {
  color: var(--accent-dark);
  border-color: var(--accent);
  background: var(--note-bg);
}

/* 区块标题与说明 */
.section-title {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 600;
}

.section-intro,
.section-lead {
  margin: 0 0 20px;
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 15px;
}

.sub-title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
}

/* 标签：细线胶囊 */
.genre-tag,
.tag,
.tag-pill,
.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid rgba(74, 125, 255, .38);
  border-radius: var(--radius-pill);
  color: var(--accent);
  font-size: 12.5px;
  line-height: 1.7;
  white-space: nowrap;
}

a.genre-tag:hover,
a.tag:hover,
a.tag-pill:hover,
a.pill:hover {
  background: var(--note-bg);
  color: var(--accent-dark);
  border-color: var(--accent);
}

.tag-pill-plain {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--text-soft);
  font-size: 12.5px;
  line-height: 1.7;
  white-space: nowrap;
}

/* 标签行 / 标签组 */
.tag-row,
.tag-line,
.tag-list,
.tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-row li,
.tag-line li,
.tag-list li,
.tag-strip li {
  display: flex;
}

/* 更多链接 */
.more-link,
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  min-height: 44px;
  color: var(--accent);
  font-size: 14.5px;
  font-weight: 600;
}

.more-link::after,
.link-more::after {
  content: "›";
  font-size: 17px;
  line-height: 1;
  transition: transform .16s ease;
}

.more-link:hover::after,
.link-more:hover::after {
  transform: translateX(3px);
}

/* 批次标记 */
.batch-tag,
.batch-mark,
.cross-batch {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 201, 77, .22);
  color: #8A6100;
  font-size: 12.5px;
  line-height: 1.7;
  white-space: nowrap;
}

/* 提示条 / 说明块 */
.notice-box,
.notice-bar,
.note-bar {
  margin: 0 0 18px;
  padding: 14px 16px;
  background: var(--note-bg);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.75;
}

.notice-bar a,
.note-bar a {
  font-weight: 600;
}

/* 步骤列表 */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 8px;
}

.step-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.step-index {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  border-radius: 50%;
  background: rgba(255, 107, 138, .14);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
}

.step-body h3,
.step-item h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.step-body p,
.step-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14.5px;
}

.step-list-numbered {
  counter-reset: stepnum;
}

.step-list-numbered > li {
  position: relative;
  padding-left: 34px;
  color: var(--text-soft);
  font-size: 14.5px;
  counter-increment: stepnum;
}

.step-list-numbered > li::before {
  content: counter(stepnum);
  position: absolute;
  left: 0;
  top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 107, 138, .14);
  color: var(--primary-dark);
  font-size: 12.5px;
  font-weight: 700;
}

/* 要点列表 */
.point-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 18px;
}

.point-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--primary);
}

/* 折叠问答 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.faq-item summary {
  position: relative;
  padding: 14px 44px 14px 16px;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 2px solid var(--text-soft);
  border-bottom: 2px solid var(--text-soft);
  transform: rotate(45deg);
  transition: transform .18s ease;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
}

.faq-item p {
  margin: 0;
  padding: 0 16px 16px;
  color: var(--text-soft);
  font-size: 14.5px;
}

/* 封面卡 */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(178px, 1fr));
  gap: 18px;
}

.cover-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}

.cover-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(74, 125, 255, .3);
}

.cover-card > a,
.cover-link {
  display: block;
  padding: 10px;
  color: var(--text);
}

.cover-card img,
.cover-card-media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--note-bg);
  transition: transform .16s ease;
}

.cover-card:hover img {
  transform: scale(1.02);
}

.cover-card .genre-tag,
.cover-card .tag-pill,
.cover-card .tag {
  margin: 10px 0 0;
}

.cover-desc,
.cover-card-desc {
  display: block;
  margin: 6px 0 0;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.6;
}

.cover-link h3 {
  margin: 8px 0 0;
  font-size: 15px;
}

/* 榜单条目 */
.rank-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rank-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
}

.rank-item:nth-child(odd) {
  background: var(--zebra);
}

.rank-no {
  flex: none;
  min-width: 22px;
  color: var(--primary);
  font-size: 14.5px;
  font-weight: 700;
}

.rank-name,
.rank-title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.rank-note {
  margin: 4px 0 0;
  color: var(--text-soft);
  font-size: 14px;
}

/* 更新记录表 */
.table-wrap,
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.update-table {
  min-width: 620px;
  font-size: 14.5px;
}

.update-table caption {
  padding: 12px 14px 0;
}

.update-table th,
.update-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
}

.update-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--note-bg);
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.update-table tbody tr:nth-child(even) {
  background: var(--zebra);
}

.update-table tbody tr:last-child td {
  border-bottom: 0;
}

.update-table td {
  color: var(--text-soft);
}

.update-table td:first-child {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.th-sort {
  cursor: pointer;
  user-select: none;
}

.th-sort::after {
  content: "↕";
  margin-left: 6px;
  color: var(--text-soft);
  font-size: 12px;
}

.th-sort[data-order="asc"]::after {
  content: "↑";
  color: var(--primary);
}

.th-sort[data-order="desc"]::after {
  content: "↓";
  color: var(--primary);
}

/* 延伸阅读 */
.read-more {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.read-more h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.read-more ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.read-more a {
  font-size: 14.5px;
}

/* 首页相关内容条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 8px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.related-links-item {
  font-size: 14.5px;
}

/* --------------------------------------------------------------------------
   4. pages —— 首页与各内页模块
   -------------------------------------------------------------------------- */

/* ============ 4.1 首页 ============ */

/* 封面墙首屏 */
.hero-wall {
  padding: 34px 0 30px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr);
  gap: var(--gap);
  align-items: start;
}

.hero-lead h1 {
  margin: 0 0 10px;
  font-size: clamp(26px, 3.4vw, 40px);
}

.hero-slogan {
  margin: 0 0 18px;
  max-width: 60ch;
  color: var(--text-soft);
  font-size: 15.5px;
}

.hero-figure {
  margin: 0 0 20px;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--note-bg);
}

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

.hero-updates {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.panel-title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
}

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

.update-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.update-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.update-note {
  flex: 1 1 100%;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.65;
}

/* 题材标签带 */
.genre-strip {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

/* 主推合集封面墙 */
.cover-wall {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.cover-wall .cover-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* 榜单速览 */
.rank-brief {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.rank-brief-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 1fr);
  gap: var(--gap);
  align-items: start;
}

.rank-column {
  padding: 8px 4px;
}

.rank-note-column {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.note-list li {
  position: relative;
  padding-left: 16px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
}

/* 专题合集推荐 */
.feature-topics {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.topic-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.topic-card {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .16s ease, box-shadow .16s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.topic-summary {
  margin: 0 0 10px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.topic-meta {
  margin: 0;
  color: var(--text-soft);
  font-size: 13.5px;
}

/* 更新节奏与记录预览 */
.rhythm-section {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.rhythm-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 22px;
}

.rhythm-list li {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text-soft);
  font-size: 14.5px;
}

/* 阅读问答摘要 */
.faq-brief {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

/* 编辑说明摘要 */
.editor-brief {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.editor-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.editor-points li {
  position: relative;
  padding-left: 18px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.editor-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--primary);
}

/* ============ 4.2 内页通用 ============ */

/* 页面标题区（内页 hero） */
.page-hero {
  margin: 0 0 26px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(240px, 1fr);
  gap: var(--gap);
  align-items: center;
}

.page-hero-text {
  min-width: 0;
}

.page-hero-lead,
.page-hero-desc {
  margin: 0 0 14px;
  max-width: 68ch;
  color: var(--text-soft);
  font-size: 15px;
}

.page-hero-media img,
.page-hero-figure img,
.hero-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--note-bg);
}

.page-hero-figure,
.hero-media {
  margin: 16px 0 0;
}

/* 主内容 + 侧栏布局 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--aside-w);
  gap: var(--gap);
  align-items: start;
}

.page-layout > .site-main,
.page-layout .site-main {
  min-width: 0;
}

.page-content,
.layout-main,
.content-main {
  min-width: 0;
}

.page-aside,
.layout-aside,
.content-aside {
  min-width: 0;
}

/* 侧栏块 */
.aside-block {
  margin-bottom: 20px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-block:last-child {
  margin-bottom: 0;
}

.aside-block h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

.aside-note {
  margin: 0 0 10px;
  color: var(--text-soft);
  font-size: 13.5px;
  line-height: 1.7;
}

.aside-block p {
  color: var(--text-soft);
  font-size: 14px;
}

.aside-links,
.aside-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-links li,
.aside-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.aside-links li:last-child,
.aside-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.aside-links a,
.aside-list a {
  font-size: 14.5px;
  font-weight: 600;
}

.aside-links span,
.aside-list p {
  margin: 0;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.6;
}

.aside-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-points li {
  position: relative;
  padding-left: 16px;
  color: var(--text-soft);
  font-size: 14px;
}

.aside-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
}

/* 内容区块 */
.content-block {
  margin: 0 0 30px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

.content-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.content-block p {
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 15px;
}

.content-block > h2 {
  margin: 0 0 12px;
}

.content-figure {
  margin: 16px 0 20px;
}

.content-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--note-bg);
}

/* 通用 section（gengxin / fankui） */
.section {
  margin: 0 0 32px;
}

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

.section > h2 {
  margin: 0 0 10px;
}

/* 多列说明 */
.column-grid {
  display: grid;
  gap: 18px;
}

.column-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.column-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.column-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.column-card p {
  margin: 0 0 4px;
  color: var(--text-soft);
  font-size: 14.5px;
}

/* ============ 4.3 榜单页 ============ */
.page-bangdan .rank-list {
  gap: 4px;
}

.page-bangdan .rank-item {
  align-items: flex-start;
  padding: 14px 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-sm);
}

.page-bangdan .rank-item:nth-child(odd) {
  background: var(--zebra);
}

.page-bangdan .rank-no {
  flex: none;
  min-width: 28px;
  font-size: 16px;
  line-height: 1.5;
}

.page-bangdan .rank-body {
  flex: 1 1 auto;
  min-width: 0;
}

.page-bangdan .rank-title {
  margin: 0 0 6px;
  font-size: 16px;
}

.page-bangdan .tag-line {
  margin: 0 0 6px;
}

.page-bangdan .rank-note {
  margin: 0;
}

.page-bangdan .column-card .link-more {
  margin-top: 6px;
}

/* ============ 4.4 题材索引页 ============ */
.ticai-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.ticai-index {
  position: sticky;
  top: 84px;
  padding: 18px 18px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.ticai-index-title {
  margin: 0 0 12px;
  font-size: 16px;
}

.ticai-index-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ticai-index-list a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-soft);
  font-size: 14.5px;
  border-left: 2px solid transparent;
}

.ticai-index-list a:hover,
.ticai-index-list a.is-active {
  background: var(--note-bg);
  color: var(--accent-dark);
  border-left-color: var(--primary);
}

.ticai-index-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.65;
}

.ticai-panels {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.genre-panel {
  scroll-margin-top: 84px;
  padding: 22px 22px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.genre-panel > h2 {
  margin: 0 0 8px;
  font-size: 20px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}

.genre-taste {
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 14.5px;
}

.genre-cover {
  margin: 14px 0 18px;
}

.genre-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--note-bg);
}

.genre-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 18px;
}

.genre-cards .cover-card {
  padding: 10px;
}

.genre-cards .cover-card-media {
  margin: 0 0 8px;
}

.genre-cards .cover-card-media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--note-bg);
}

.genre-cards .cover-card-desc {
  margin: 6px 0 0;
}

.genre-updates {
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.genre-updates h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

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

.update-line-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--text-soft);
  font-size: 14px;
}

.genre-updates-link {
  margin: 10px 0 0;
  font-size: 14.5px;
}

.view-order {
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.view-order h2 {
  margin: 0 0 14px;
}

.view-order-more {
  margin-top: 14px;
  font-size: 14.5px;
}

/* ============ 4.5 更新动态页 ============ */
.page-gengxin .page-hero {
  padding-bottom: 20px;
}

.update-table-section {
  margin-bottom: 34px;
}

.update-table-section .table-scroll {
  margin-top: 4px;
}

.update-table-section .update-table {
  min-width: 760px;
}

.update-cross-section {
  margin-bottom: 34px;
}

.cross-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.cross-col {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.cross-col h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.cross-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cross-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}

.cross-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.cross-batch {
  color: #8A6100;
}

.update-rhythm-section {
  margin-bottom: 0;
}

/* ============ 4.6 专题合集页 ============ */
.page-zhuanti .page-hero {
  padding-bottom: 18px;
}

.hero-kicker {
  margin: 0 0 8px;
  color: var(--primary-dark);
  font-size: 13.5px;
  font-weight: 600;
}

.topic-visual {
  margin: 0 0 28px;
}

.topic-visual img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--note-bg);
}

.topic-summary,
.topic-core,
.topic-process,
.topic-related,
.topic-back {
  margin: 0 0 32px;
}

.topic-summary p {
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 15px;
}

.topic-summary .note-bar {
  margin-top: 16px;
}

.topic-core .cover-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.topic-core .cover-card > p {
  margin: 0;
  padding: 0 10px 12px;
  color: var(--text-soft);
  font-size: 13.5px;
}

.topic-process .step-list {
  gap: 16px;
  counter-reset: topicstep;
}

.topic-process .step-item {
  display: block;
  padding-left: 34px;
  position: relative;
}

.topic-process .step-item h3 {
  margin: 0 0 4px;
}

.topic-process .step-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14.5px;
}

.topic-process .step-item::before {
  counter-increment: topicstep;
  content: counter(topicstep);
  position: absolute;
  left: 0;
  top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 107, 138, .14);
  color: var(--primary-dark);
  font-size: 12.5px;
  font-weight: 700;
}

.related-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.related-column {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-column h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.related-column ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-column a {
  font-size: 14.5px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .16s ease, box-shadow .16s ease;
}

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

.entry-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.entry-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14.5px;
}

/* ============ 4.7 阅读问答页 ============ */
.page-yuedu-faq .page-hero {
  margin-bottom: 28px;
}

.faq-reading,
.faq-compare,
.faq-list {
  margin: 0 0 30px;
}

.faq-reading > h2,
.faq-compare > h2,
.faq-list > h2 {
  margin: 0 0 10px;
}

.faq-reading > p,
.faq-compare > p,
.faq-list > p {
  max-width: 72ch;
  color: var(--text-soft);
  font-size: 15px;
}

.reading-figure {
  margin: 16px 0 20px;
}

.reading-figure img {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--note-bg);
}

.reading-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.reading-note {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.reading-note h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
}

.reading-note p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
}

.faq-compare .step-item {
  display: block;
  padding-left: 34px;
  position: relative;
}

.faq-compare .step-item p {
  margin: 0;
}

.faq-compare .step-item .step-index {
  position: absolute;
  left: 0;
  top: 2px;
  margin: 0;
}

/* ============ 4.8 反馈与更正页 ============ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 6px;
}

.category-card {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.category-card .tag {
  margin-bottom: 10px;
}

.category-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

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

.process-panel {
  margin: 0 0 20px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.process-panel:last-child {
  margin-bottom: 0;
}

.process-panel h3 {
  margin: 0 0 12px;
  font-size: 16.5px;
}

.process-panel .step-list {
  margin-bottom: 14px;
}

.process-panel .step-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.process-panel .step-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
}

.path-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
}

/* ============ 4.9 编辑说明页 ============ */
.naming-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 6px;
}

.naming-list li {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.naming-list h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  color: var(--accent-dark);
}

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

.compare-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 6px;
}

.compare-col {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compare-col h3 {
  margin: 0 0 12px;
  font-size: 16px;
  padding-left: 10px;
  border-left: 3px solid var(--accent);
}

.compare-col:last-child h3 {
  border-left-color: var(--primary);
}

.compare-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compare-col li {
  position: relative;
  padding-left: 16px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.compare-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
}

.compare-col:last-child li::before {
  background: var(--primary);
}

.related-block {
  border-bottom: 0;
  padding-bottom: 0;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.related-list a {
  display: block;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
}

.related-list a:hover {
  border-color: var(--accent);
  background: var(--note-bg);
}

/* ============ 4.10 404 页 ============ */
.error-main {
  padding-top: 48px;
  padding-bottom: 72px;
}

.error-panel {
  max-width: 640px;
  margin: 0 auto;
  padding: 34px 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
}

.error-code {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
}

.error-panel h1 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.6vw, 30px);
}

.error-text {
  margin: 0 0 20px;
  color: var(--text-soft);
  font-size: 15px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.error-links a {
  font-size: 14.5px;
}

/* 滚动出现增强（内容默认可见，仅作动效补充） */
.reveal {
  transition: opacity .3s ease, transform .3s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   5. responsive —— 断点 1024 / 860 / 768 / 480
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .rank-brief-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-aside,
  .layout-aside,
  .content-aside {
    order: 2;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .ticai-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .ticai-index {
    position: static;
    top: auto;
  }

  .ticai-index-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .ticai-index-list a {
    border-left: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    padding: 6px 12px;
    font-size: 13.5px;
  }

  .ticai-index-list a:hover,
  .ticai-index-list a.is-active {
    border-color: var(--accent);
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topic-cards,
  .cross-grid,
  .compare-columns,
  .reading-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    padding: 8px 16px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 24px -18px rgba(31, 36, 48, .4);
  }

  .site-nav ul {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .site-nav li + li {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .site-nav a {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 0 6px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .site-nav a.is-current {
    border-left-color: var(--primary);
    background: var(--note-bg);
  }
}

@media (max-width: 768px) {
  .site-main {
    padding: 22px 16px 44px;
  }

  .header-inner,
  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-hero {
    padding: 18px 18px;
  }

  .page-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .hero-wall {
    padding: 22px 0 24px;
  }

  .genre-strip,
  .cover-wall,
  .rank-brief,
  .feature-topics,
  .rhythm-section,
  .faq-brief,
  .editor-brief {
    padding: 24px 0;
  }

  .genre-strip .tag-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .genre-strip .tag-row li {
    flex: none;
  }

  .cover-grid,
  .cover-wall .cover-grid,
  .topic-core .cover-grid,
  .genre-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rhythm-list,
  .related-columns,
  .entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .table-wrap,
  .table-scroll {
    border-radius: var(--radius-sm);
  }

  .update-table {
    min-width: 640px;
  }

  .update-table th,
  .update-table td {
    padding: 10px 12px;
  }

  .update-table thead th:first-child,
  .update-table tbody td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    background: var(--surface);
  }

  .update-table thead th:first-child {
    z-index: 3;
    background: var(--note-bg);
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .error-panel {
    padding: 26px 20px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15.5px;
  }

  .brand {
    font-size: 17.5px;
  }

  h2,
  .section-title {
    font-size: 20px;
  }

  .cover-grid,
  .cover-wall .cover-grid,
  .topic-core .cover-grid,
  .genre-cards,
  .rhythm-list,
  .related-columns,
  .entry-grid,
  .topic-cards,
  .cross-grid,
  .compare-columns,
  .reading-notes,
  .category-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cover-card img,
  .cover-card-media img,
  .genre-cards .cover-card-media img {
    aspect-ratio: 4 / 3;
  }

  .hero-actions .btn,
  .error-actions .btn {
    flex: 1 1 100%;
  }

  .step-item {
    gap: 10px;
  }

  .faq-item summary {
    padding: 13px 40px 13px 14px;
    font-size: 15px;
  }

  .faq-item p {
    padding: 0 14px 14px;
  }

  .reading-figure img {
    max-width: 100%;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .cover-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}