/* ============================================================
   糖心vlog日常 · 整站样式表
   单色品牌风：白底黑字，暖橙识别色，编辑部工作台秩序感
   版本：1.0
   ============================================================ */

/* ============================================================
   Base · 基础变量、重置与全局元素
   ============================================================ */
:root {
  --color-text: #161616;
  --color-bg: #ffffff;
  --color-bg-soft: #f6f3ef;
  --color-border: #e7e2db;
  --color-accent: #e8590c;
  --color-muted: #6e6a65;

  --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;

  --container-width: 1200px;
  --container-padding: 24px;

  --text-base: 16px;
  --text-h1: 36px;
  --text-h2: 24px;
  --text-h3: 18px;
  --line-height-base: 1.75;
  --line-height-h1: 1.3;
  --line-height-h2: 1.4;
  --line-height-h3: 1.5;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;

  --shadow-card: 0 1px 3px rgba(22, 22, 22, 0.06);
  --shadow-card-hover: 0 6px 16px rgba(22, 22, 22, 0.08);
}

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

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

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

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

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

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

ul,
ol {
  list-style: none;
}

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

figure {
  margin: 0;
}

/* ============================================================
   Layout · 全站统一外壳、容器与栅格
   ============================================================ */

/* 站点主体：全站统一背景与文字 */
.site-body {
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 站点主体容器 */
.site-main {
  flex: 1 0 auto;
  width: 100%;
}

/* 首页主体 */
.home-main {
  width: 100%;
}

/* 内页主体 */
.inner-main {
  width: 100%;
  padding: 40px 0 72px;
}

/* 统一内容宽度 */
.header-inner,
.footer-inner,
.home-main > section,
.inner-main {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* 首页各 section 的内容容器 */
.home-main > section {
  padding-top: 56px;
  padding-bottom: 56px;
}

/* ============================================================
   Components · 通用组件
   ============================================================ */

/* ---------- 页头 ---------- */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.brand-name::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: 2px;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 400;
  color: var(--color-muted);
  line-height: 1.4;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link.is-current {
  color: var(--color-text);
  font-weight: 700;
  border-bottom-color: var(--color-accent);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 5px;
  padding: 0;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

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

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

/* ---------- 页面标题区 ---------- */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: var(--text-h1);
  line-height: var(--line-height-h1);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 720px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background-color: #d04e0a;
  border-color: #d04e0a;
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

/* ---------- 区块标题 ---------- */
.section-heading {
  margin-bottom: 32px;
}

.section-title {
  font-size: var(--text-h2);
  line-height: var(--line-height-h2);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.section-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 640px;
}

.section-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
  max-width: 720px;
  margin-bottom: 24px;
}

.section-more {
  margin-top: 32px;
  text-align: center;
}

.section-more a {
  display: inline-block;
  padding: 10px 20px;
  font-size: 15px;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.section-more a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

/* ---------- 图片容器 ---------- */
.card-figure,
.hero-figure,
.prepare-figure,
.confirm-figure,
.process-figure,
.topic-media,
.sidebar-figure,
.updates-hero-media {
  overflow: hidden;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
}

.card-figure img,
.hero-figure img,
.prepare-figure img,
.confirm-figure img,
.process-figure img,
.topic-media img,
.sidebar-figure img,
.updates-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 折叠问答 ---------- */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  margin-bottom: 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
}

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

.faq-item summary::after {
  content: '';
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-muted);
  border-bottom: 2px solid var(--color-muted);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
  margin-top: -4px;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.faq-item > p,
.faq-answer {
  padding: 16px 24px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background-color: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 40px;
}

.footer-brand-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 16px;
}

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

.footer-brand-name::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: 2px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 280px;
}

.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
}

/* ============================================================
   Components · 首页专属组件
   ============================================================ */

/* ---------- 首屏时间线焦点区 ---------- */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  padding-top: 64px !important;
  padding-bottom: 64px !important;
  background-color: var(--color-bg);
}

.hero-title {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-muted);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-timeline {
  margin-bottom: 32px;
  padding-left: 4px;
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 16px;
  padding-bottom: 24px;
  padding-left: 24px;
  border-left: 1px solid var(--color-border);
}

.timeline-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.timeline-dot {
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.timeline-text {
  flex: 1;
}

.timeline-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.timeline-text p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

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

.hero-media {
  position: relative;
}

.hero-figure {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.hero-figure img {
  transition: transform 0.4s ease;
}

.hero-figure:hover img {
  transform: scale(1.02);
}

/* ---------- 内容方向工具条 ---------- */
.tools-section {
  background-color: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.tool-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  min-height: 52px;
}

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

/* ---------- 分类数据表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
}

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

.data-table thead th {
  background-color: var(--color-bg-soft);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  padding: 14px 24px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 16px 24px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr {
  transition: background-color 0.2s ease;
}

.data-table tbody tr:hover {
  background-color: var(--color-bg-soft);
}

/* ---------- 专题片单推荐 ---------- */
.topic-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

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

.topic-card .card-figure {
  aspect-ratio: 16 / 9;
  border-radius: 0;
}

.card-body {
  padding: 20px 24px 24px;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: 8px;
}

.card-scene {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: rgba(232, 89, 12, 0.08);
  border-radius: 100px;
}

/* ---------- 最近更新状态流 ---------- */
.updates-section {
  background-color: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.update-stream {
  max-width: 720px;
}

.update-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 28px;
  padding-left: 24px;
  border-left: 1px solid var(--color-border);
}

.update-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.update-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg-soft);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.update-date {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  min-width: 72px;
  padding-top: 2px;
}

.update-type {
  flex-shrink: 0;
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(232, 89, 12, 0.08);
  border-radius: 100px;
  margin-top: 2px;
  white-space: nowrap;
}

.update-item p {
  flex: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

/* ---------- 观看指南四步 ---------- */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-item {
  padding: 24px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.step-num {
  display: inline-block;
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
}

/* ---------- FAQ 摘选与反馈 ---------- */
.faq-list {
  max-width: 720px;
}

.feedback-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding: 24px 32px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.feedback-bar p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  flex: 1;
  min-width: 240px;
}

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

/* ============================================================
   Layout · 内页双栏与单栏
   ============================================================ */

/* ---------- 内页双栏（主内容 + 右侧栏） ---------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: start;
}

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

/* ---------- 内页侧栏 ---------- */
.sidebar {
  min-width: 0;
}

.sidebar-block,
.sidebar-card {
  padding: 24px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.sidebar-block h3,
.sidebar-card h2,
.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.5;
}

.sidebar-block p,
.sidebar-card p,
.sidebar-note p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.sidebar-block a,
.sidebar-card a {
  color: var(--color-accent);
  font-weight: 600;
}

.sidebar-block a:hover,
.sidebar-card a:hover {
  color: var(--color-text);
}

.sidebar-links li {
  margin-bottom: 10px;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

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

/* ---------- 相关链接条 ---------- */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ============================================================
   Pages · 内容分类页
   ============================================================ */

.category-table-section {
  margin-bottom: 48px;
}

.category-table-section h2,
.category-cards-section h2 {
  font-size: var(--text-h2);
  line-height: var(--line-height-h2);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

.category-table {
  min-width: 560px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.category-table thead th {
  background-color: var(--color-bg-soft);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.category-table tbody td {
  padding: 16px 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.category-table tbody tr:last-child td {
  border-bottom: none;
}

.category-table tbody tr {
  transition: background-color 0.2s ease;
}

.category-table tbody tr:hover {
  background-color: var(--color-bg-soft);
}

.category-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

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

.category-card .card-figure {
  aspect-ratio: 16 / 9;
  border-radius: 0;
}

.category-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
  padding: 20px 24px 0;
}

.category-card > p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  padding: 8px 24px 0;
}

.category-card .card-scene {
  font-size: 13px;
  color: var(--color-accent);
  padding: 8px 24px 20px;
  margin: 0;
}

/* ============================================================
   Pages · 专题片单页
   ============================================================ */

.topic-list {
  margin-bottom: 56px;
}

.topic-list .section-title {
  margin-bottom: 24px;
}

.topic-block {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.topic-block:first-of-type {
  padding-top: 0;
}

.topic-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.topic-media {
  width: 100%;
  aspect-ratio: 4 / 3;
}

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

.topic-name {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 8px;
}

.topic-scene {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.topic-scene strong {
  color: var(--color-accent);
  font-weight: 600;
}

.topic-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 16px;
}

.topic-points {
  margin-bottom: 16px;
}

.topic-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.topic-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.topic-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
}

.topic-link:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.topic-detail {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.topic-detail .section-title {
  margin-bottom: 8px;
}

.topic-detail .section-intro {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 24px;
}

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

.detail-card {
  padding: 20px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

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

.detail-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.detail-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
}

/* ============================================================
   Pages · 观看指南页
   ============================================================ */

.guide-layout {
  max-width: 720px;
}

.guide-prepare {
  margin-bottom: 56px;
}

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

.prepare-media {
  margin-bottom: 32px;
}

.prepare-figure {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.prepare-figure figcaption,
.confirm-figure figcaption,
.process-figure figcaption,
.updates-hero-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}

.prepare-list {
  display: grid;
  gap: 16px;
}

.prepare-item {
  padding: 20px 24px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.prepare-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.prepare-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

.guide-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 56px;
}

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

.guide-steps .section-lead {
  margin-bottom: 24px;
}

.steps-list {
  display: grid;
  gap: 16px;
}

.steps-list .step-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 24px;
  align-items: start;
}

.steps-list .step-num {
  font-size: 32px;
  line-height: 1.2;
  color: var(--color-accent);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.step-body {
  min-width: 0;
}

.step-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.step-body p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.step-body a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
}

.step-body a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.guide-verify-tip {
  margin-bottom: 56px;
}

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

.tip-box {
  padding: 24px 28px;
  background-color: var(--color-bg-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.tip-box p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 8px;
}

.tip-box p:last-child {
  margin-bottom: 0;
}

.tip-box strong {
  color: var(--color-accent);
  font-weight: 700;
}

.tip-box a {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
}

.tip-box a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.guide-quick-faq {
  margin-bottom: 24px;
}

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

.faq-more {
  margin-top: 16px;
}

.faq-more a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
}

.faq-more a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

/* ============================================================
   Pages · 入口核验页
   ============================================================ */

.verify-page {
  max-width: 720px;
}

.verify-confirm {
  margin-bottom: 56px;
}

.verify-confirm .section-title {
  margin-bottom: 8px;
}

.verify-confirm .section-desc {
  margin-bottom: 24px;
}

.confirm-steps {
  counter-reset: confirm-counter;
  margin-bottom: 32px;
}

.confirm-step {
  position: relative;
  padding: 20px 24px 20px 80px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  counter-increment: confirm-counter;
}

.confirm-step::before {
  content: counter(confirm-counter, decimal-leading-zero);
  position: absolute;
  left: 24px;
  top: 20px;
  font-size: 24px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}

.confirm-step h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.confirm-step p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.confirm-figure {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.verify-table {
  margin-bottom: 56px;
}

.verify-table .section-title {
  margin-bottom: 8px;
}

.verify-table .section-desc {
  margin-bottom: 24px;
}

.symptom-table {
  min-width: 480px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.symptom-table thead th {
  background-color: var(--color-bg-soft);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.symptom-table tbody td {
  padding: 16px 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.symptom-table tbody tr:last-child td {
  border-bottom: none;
}

.symptom-table tbody tr {
  transition: background-color 0.2s ease;
}

.symptom-table tbody tr:hover {
  background-color: var(--color-bg-soft);
}

.verify-paths {
  margin-bottom: 56px;
}

.verify-paths .section-title {
  margin-bottom: 8px;
}

.verify-paths .section-desc {
  margin-bottom: 24px;
}

.path-block {
  margin-bottom: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.path-block h3 {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  line-height: 1.5;
}

.path-content {
  padding: 20px 24px;
}

.path-content p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.path-content p strong {
  color: var(--color-text);
  font-weight: 700;
}

.path-content ol {
  list-style: decimal;
  padding-left: 20px;
  margin-top: 12px;
}

.path-content ol li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 6px;
  padding-left: 4px;
}

/* 反馈入口条 */
.feedback-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 32px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.feedback-bar .section-title {
  font-size: 18px;
  margin-bottom: 4px;
}

.feedback-bar p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
  flex: 1;
  min-width: 240px;
}

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

.feedback-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ============================================================
   Pages · 更新动态页
   ============================================================ */

.updates-hero-media {
  width: 100%;
  aspect-ratio: 16 / 7;
  margin-bottom: 40px;
}

.updates-types {
  margin-bottom: 48px;
}

.updates-types h2 {
  font-size: var(--text-h2);
  line-height: var(--line-height-h2);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.updates-types > p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.type-tag-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.type-tag {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: 100px;
}

.type-tag-category {
  color: var(--color-accent);
  border-color: rgba(232, 89, 12, 0.3);
  background-color: rgba(232, 89, 12, 0.06);
}

.type-tag-topic {
  color: var(--color-text);
}

.type-tag-guide {
  color: var(--color-muted);
}

.updates-timeline {
  max-width: 720px;
  margin-bottom: 48px;
}

.updates-timeline h2 {
  font-size: var(--text-h2);
  line-height: var(--line-height-h2);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 32px;
}

.timeline-group {
  margin-bottom: 40px;
}

.timeline-period {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 28px;
  padding-left: 24px;
  border-left: 1px solid var(--color-border);
}

.timeline-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  background-color: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.timeline-date {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  min-width: 72px;
  padding-top: 2px;
}

.timeline-tag {
  flex-shrink: 0;
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 100px;
  margin-top: 2px;
  white-space: nowrap;
}

.tag-guide {
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}

.timeline-text {
  flex: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
}

.updates-links {
  padding: 24px 28px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.updates-links h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.updates-links p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.updates-links ul li {
  margin-bottom: 10px;
}

.updates-links ul a {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
}

.updates-links ul a:hover {
  color: var(--color-text);
}

/* ============================================================
   Pages · 站务说明页
   ============================================================ */

.content-section {
  max-width: 720px;
  margin-bottom: 56px;
}

.content-section h2 {
  font-size: var(--text-h2);
  line-height: var(--line-height-h2);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.content-section p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.site-position p:last-child {
  margin-bottom: 0;
}

.process-figure {
  width: 100%;
  aspect-ratio: 16 / 8;
  margin: 24px 0;
}

.process-list {
  counter-reset: process-counter;
}

.process-list li {
  position: relative;
  padding: 20px 24px 20px 80px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  counter-increment: process-counter;
}

.process-list li::before {
  content: counter(process-counter, decimal-leading-zero);
  position: absolute;
  left: 24px;
  top: 20px;
  font-size: 24px;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}

.process-list h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.5;
}

.process-list p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 0;
}

.standard-list li {
  position: relative;
  padding: 16px 20px 16px 48px;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

.standard-list li::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 22px;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.standard-list strong {
  color: var(--color-text);
  font-weight: 700;
}

.boundary-list li {
  position: relative;
  padding: 16px 20px 16px 48px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

.boundary-list li::before {
  content: '×';
  position: absolute;
  left: 20px;
  top: 14px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.5;
}

.related-links p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.related-links a {
  display: inline-block;
  margin-right: 16px;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.related-links a:hover {
  color: var(--color-text);
}

/* ============================================================
   Pages · 常见问题页
   ============================================================ */

.faq-group {
  margin-bottom: 40px;
}

.faq-group-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.5;
}

.faq-group .faq-item:last-child {
  margin-bottom: 0;
}

.feedback-bar {
  margin-top: 48px;
}

.feedback-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.feedback-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.sidebar-figure {
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 24px;
}

.sidebar-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
  background-color: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}

.sidebar-links {
  margin-bottom: 24px;
}

.sidebar-note {
  padding: 16px 20px;
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* ============================================================
   Pages · 404 页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 80px 24px;
}

.error-inner {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.error-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
  margin-bottom: 32px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.error-btn:hover {
  background-color: #d04e0a;
  color: #ffffff;
  transform: translateY(-1px);
}

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

/* ---------- 1200px 断点 ---------- */
@media (max-width: 1200px) {
  .hero-section {
    gap: 40px;
  }

  .hero-title {
    font-size: 36px;
  }

  .page-layout {
    gap: 32px;
  }
}

/* ---------- 992px 断点 ---------- */
@media (max-width: 992px) {
  :root {
    --container-padding: 20px;
  }

  .header-inner {
    height: 60px;
  }

  /* 导航折叠为汉堡 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(22, 22, 22, 0.08);
    display: block;
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: none;
    border-left: 2px solid transparent;
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  .nav-link.is-current {
    border-bottom: none;
    border-left-color: var(--color-accent);
    background-color: var(--color-bg-soft);
  }

  /* 首页 hero */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 48px !important;
    padding-bottom: 48px !important;
  }

  .hero-media {
    order: 2;
  }

  .hero-figure {
    aspect-ratio: 16 / 10;
  }

  /* 工具条 */
  .tools-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 专题卡 */
  .topic-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

  /* 内页双栏 */
  .page-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    margin-top: 24px;
  }

  /* 专题块 */
  .topic-block {
    grid-template-columns: 220px 1fr;
    gap: 24px;
  }

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

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* ---------- 768px 断点 ---------- */
@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --text-h1: 28px;
    --text-h2: 20px;
    --text-h3: 17px;
  }

  .inner-main {
    padding: 24px 0 56px;
  }

  .home-main > section {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .tools-bar {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .tool-tag {
    padding: 14px 12px;
    font-size: 14px;
    min-height: 48px;
  }

  .topic-cards {
    grid-template-columns: 1fr;
  }

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

  .step-item {
    padding: 20px;
  }

  .feedback-bar {
    padding: 20px;
    flex-direction: column;
    align-items: stretch;
  }

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

  .feedback-actions .btn {
    width: 100%;
  }

  /* 分类卡 */
  .category-cards {
    grid-template-columns: 1fr;
  }

  /* 专题块 */
  .topic-block {
    grid-template-columns: 1fr;
  }

  .topic-media {
    aspect-ratio: 16 / 10;
  }

  .detail-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .detail-card {
    padding: 16px;
  }

  /* 更新页 */
  .updates-hero-media {
    aspect-ratio: 16 / 10;
  }

  .timeline-date {
    min-width: 64px;
  }

  /* 站务 */
  .process-list li,
  .confirm-step {
    padding-left: 64px;
  }

  .process-list li::before,
  .confirm-step::before {
    left: 20px;
    font-size: 20px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
  }

  .footer-desc {
    max-width: 100%;
  }

  /* 表格横向滚动 */
  .table-wrap {
    overflow-x: auto;
  }

  .category-table,
  .symptom-table {
    min-width: 520px;
  }

  /* 面包屑 */
  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
  }

  .page-header {
    margin-bottom: 28px;
    padding-bottom: 16px;
  }

  .page-description {
    font-size: 15px;
  }
}

/* ---------- 480px 断点 ---------- */
@media (max-width: 480px) {
  .brand-name {
    font-size: 18px;
  }

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

  .hero-timeline {
    margin-bottom: 24px;
  }

  .timeline-item {
    padding-left: 20px;
    gap: 12px;
  }

  .timeline-label {
    font-size: 12px;
  }

  .timeline-text p {
    font-size: 14px;
  }

  .tools-bar {
    grid-template-columns: 1fr;
  }

  .tool-tag {
    justify-content: flex-start;
  }

  .data-table thead th,
  .data-table tbody td {
    padding: 12px 16px;
    font-size: 14px;
  }

  .card-body {
    padding: 16px 20px 20px;
  }

  .update-item {
    padding-left: 20px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .update-date {
    min-width: auto;
  }

  .update-item p {
    flex-basis: 100%;
  }

  .steps-list .step-item {
    grid-template-columns: 48px 1fr;
    gap: 16px;
    padding: 20px;
  }

  .steps-list .step-num {
    font-size: 26px;
  }

  /* 侧栏 */
  .sidebar-block,
  .sidebar-card {
    padding: 20px;
  }

  /* 分类表 */
  .category-table thead th,
  .category-table tbody td,
  .symptom-table thead th,
  .symptom-table tbody td {
    padding: 12px 16px;
    font-size: 14px;
  }

  .category-card h3 {
    padding: 16px 20px 0;
  }

  .category-card > p {
    padding: 6px 20px 0;
  }

  .category-card .card-scene {
    padding: 6px 20px 16px;
  }

  /* 专题 */
  .topic-name {
    font-size: 19px;
  }

  .topic-content {
    padding: 0;
  }

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

  /* 更新 */
  .timeline-item {
    padding-left: 20px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .timeline-date {
    min-width: auto;
  }

  .timeline-tag {
    margin-top: 0;
  }

  .timeline-text {
    flex-basis: 100%;
  }

  .type-tag-list {
    gap: 8px;
  }

  .type-tag {
    padding: 5px 12px;
    font-size: 12px;
  }

  /* 站务 */
  .process-list li,
  .confirm-step {
    padding: 16px 16px 16px 56px;
  }

  .process-list li::before,
  .confirm-step::before {
    left: 16px;
    top: 16px;
    font-size: 18px;
  }

  .standard-list li,
  .boundary-list li {
    padding: 14px 16px 14px 44px;
  }

  .standard-list li::before,
  .boundary-list li::before {
    left: 16px;
  }

  /* FAQ */
  .faq-item summary {
    padding: 16px 20px;
    font-size: 15px;
  }

  .faq-item > p,
  .faq-answer {
    padding: 14px 20px 18px;
    font-size: 14px;
  }

  /* 反馈 */
  .feedback-bar {
    padding: 20px;
  }

  .feedback-links {
    flex-direction: column;
    width: 100%;
  }

  .feedback-link {
    width: 100%;
    justify-content: center;
  }

  /* 404 */
  .error-code {
    font-size: 56px;
  }

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

  .error-desc {
    font-size: 15px;
  }

  .error-btn {
    width: 100%;
  }

  /* 页脚 */
  .footer-inner {
    padding-top: 32px;
    padding-bottom: 24px;
  }
}