/* ==========================================================================
   91短剧 · 全站样式表
   设计方向：夜场放映目录风 · 深色画布 + 暖黄路径提示
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base — 重置、变量、全局基础
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #111318;
  --color-bg-soft: #171a21;
  --color-surface: #1c1f27;
  --color-surface-raised: #22252e;
  --color-border: #2A2D35;
  --color-border-light: #343842;
  --color-text: #E9E6DF;
  --color-text-dim: #9699A3;
  --color-text-faint: #6a6e7a;
  --color-accent: #F0B63A;
  --color-accent-soft: rgba(240, 182, 58, 0.12);
  --color-accent-border: rgba(240, 182, 58, 0.35);
  --color-success: #57B894;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono",
    Menlo, monospace;

  --container-width: 1180px;
  --reading-width: 780px;
  --header-height: 64px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --transition-fast: 0.18s ease;
  --transition-base: 0.25s ease;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 0.95rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: #f6c95e;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.45rem);
  letter-spacing: 0.01em;
}

h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.65rem);
}

h3 {
  font-size: 1.08rem;
}

h4 {
  font-size: 1rem;
}

p {
  margin-bottom: 0.85rem;
}

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

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

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* --------------------------------------------------------------------------
   Layout — 页头、页脚、主容器骨架
   -------------------------------------------------------------------------- */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

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

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

.brand-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  position: relative;
}

.brand-name::after {
  content: "";
  display: block;
  width: 22px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 4px;
  border-radius: 2px;
}

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

.brand-link:hover .brand-name::after {
  background: var(--color-text);
}

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

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 10px 16px;
  cursor: pointer;
  min-height: 44px;
}

.nav-toggle-icon {
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--color-accent);
  position: relative;
  transition: background var(--transition-fast);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transition: transform var(--transition-fast);
}

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

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  color: var(--color-text-dim);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-list li a:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav-list li a.is-current {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  margin-top: 80px;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  max-width: 300px;
}

.footer-col-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

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

.footer-links-col ul li a {
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

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

.footer-meta {
  font-size: 0.82rem;
  color: var(--color-text-faint);
}

.footer-lang,
.footer-region {
  margin-bottom: 6px;
  padding-left: 14px;
  position: relative;
}

.footer-lang::before,
.footer-region::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

.footer-copyright {
  border-top: 1px solid var(--color-border);
  padding: 18px 24px;
  text-align: center;
}

.footer-copyright p {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin: 0;
}

/* 主内容骨架 */
.site-main {
  min-height: 60vh;
}

/* 首页主区 */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 内页主区 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 4px;
  font-size: 0.84rem;
  color: var(--color-text-faint);
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  color: var(--color-text-faint);
  font-size: 0.75rem;
}

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

/* 内页统一页面标题区 */
.page-header {
  padding: 26px 0 18px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.page-description {
  display: inline-block;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  padding: 4px 12px;
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
}

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

.page-intro,
.page-lead {
  font-size: 1.05rem;
  color: var(--color-text-dim);
  max-width: 720px;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   Components — 通用组件
   -------------------------------------------------------------------------- */

/* 区块标题与导语 */
.section-intro {
  margin-bottom: 24px;
}

.section-title {
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 4px;
  height: 1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-desc,
.section-lead {
  color: var(--color-text-dim);
  font-size: 0.92rem;
  margin-top: 8px;
  margin-bottom: 18px;
}

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 26px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background var(--transition-fast),
    border-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary {
  background: var(--color-accent);
  color: #1a1a1a;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: #f6c95e;
  border-color: #f6c95e;
  color: #1a1a1a;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-light);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

/* 区块内容容器 */
.content-section {
  margin-bottom: 56px;
}

/* 图片容器通用约束 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

figcaption {
  font-size: 0.82rem;
  color: var(--color-text-faint);
  padding: 10px 4px 0;
  line-height: 1.6;
  text-align: left;
}

/* 步骤项目（首页与频道页共用结构，父级限定） */
.steps-row .step-item,
.step-list .step-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  position: relative;
}

.steps-row .step-item .step-num,
.step-list .step-item .step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.steps-row .step-item h3,
.step-list .step-item h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.steps-row .step-item p,
.step-list .step-item p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin-bottom: 12px;
}

.steps-row .step-item a,
.step-list .step-item a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 频道编号行（首页与频道页） */
.channel-item .channel-number,
.channel-row .channel-no {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* 频道入口行（首页） */
.channel-item .channel-number {
  width: 56px;
}

.channel-item h3 {
  font-size: 1.02rem;
  margin-bottom: 4px;
  color: var(--color-text);
}

.channel-item p {
  font-size: 0.87rem;
  color: var(--color-text-dim);
  margin-bottom: 8px;
  line-height: 1.65;
}

.channel-item a {
  font-size: 0.84rem;
  font-weight: 500;
}

/* 频道总览行（频道页） */
.channel-row .channel-no {
  width: 48px;
  color: var(--color-text-faint);
}

.channel-row .channel-info h4 {
  font-size: 0.98rem;
  margin-bottom: 4px;
}

.channel-row .channel-info p {
  font-size: 0.86rem;
  color: var(--color-text-dim);
  line-height: 1.65;
  margin-bottom: 0;
}

.channel-row .channel-check {
  font-size: 0.84rem;
  color: var(--color-success);
  flex-shrink: 0;
  text-align: right;
  align-self: center;
  max-width: 200px;
  line-height: 1.6;
}

/* 表格通用 */
.path-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.path-table {
  width: 100%;
  min-width: 640px;
  font-size: 0.9rem;
}

.path-table th,
.path-table td {
  padding: 14px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
}

.path-table thead th {
  background: var(--color-bg-soft);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

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

.path-table .step-num {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  width: 52px;
}

.path-table .step-name {
  font-weight: 600;
  color: var(--color-text);
  min-width: 140px;
}

.path-table .step-owner {
  color: var(--color-text-dim);
  min-width: 140px;
}

.path-table .step-done {
  color: var(--color-text-dim);
  min-width: 180px;
}

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

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

.faq-item summary {
  padding: 16px 48px 16px 20px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  list-style: none;
  min-height: 48px;
  display: flex;
  align-items: center;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--color-accent);
  font-weight: 400;
  transition: transform var(--transition-fast);
}

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

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

.faq-item .faq-answer {
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.8;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
  margin-top: 0;
}

.faq-item .faq-answer p {
  margin-bottom: 8px;
}

.faq-item .faq-answer a {
  font-size: 0.88rem;
}

/* 页尾相关入口 */
.related-links,
.end-nav-links,
.next-links,
.terms-related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  flex: 1;
  min-width: 180px;
}

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

.related-card .related-label {
  font-size: 0.76rem;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.related-card .related-name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-text);
}

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

/* 内页末尾相关模块 */
.page-end-nav {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.end-nav-label,
.end-nav-title,
.related-title {
  font-size: 0.85rem;
  color: var(--color-text-faint);
  margin-bottom: 14px;
  font-weight: 500;
}

.end-nav-links a,
.related-links a {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-text-dim);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.end-nav-links a:hover,
.related-links a:hover {
  border-color: var(--color-accent-border);
  color: var(--color-accent);
}

/* 内页末尾相关模块（guide 用） */
.next-link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

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

.next-link-card .next-link-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.98rem;
}

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

.next-link-card .next-link-desc {
  font-size: 0.84rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}

/* 内容边界侧栏 */
.sidebar-note {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.aside-box .aside-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.aside-box p {
  font-size: 0.86rem;
  color: var(--color-text-dim);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Pages — 首页
   -------------------------------------------------------------------------- */

/* 首屏主区 */
.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 72px 0 64px;
}

.hero-copy h1 {
  margin-bottom: 16px;
}

.hero-copy .hero-lead {
  font-size: 1.08rem;
  color: var(--color-text-dim);
  margin-bottom: 28px;
  max-width: 480px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin-bottom: 0;
}

.hero-figure {
  position: relative;
}

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

/* 下一屏提示 */
.next-section-hint {
  text-align: center;
  padding: 28px 0 44px;
  border-top: 1px solid var(--color-border);
  position: relative;
}

.next-section-hint::before {
  content: "";
  display: block;
  width: 1px;
  height: 32px;
  background: var(--color-border-light);
  margin: 0 auto 18px;
}

.next-section-hint p {
  font-size: 0.95rem;
  color: var(--color-text-dim);
  margin: 0;
}

.next-section-hint a {
  color: var(--color-accent);
  font-weight: 500;
}

.next-section-hint a:hover {
  color: #f6c95e;
}

/* 频道引索带 */
.channel-index-section {
  padding: 56px 0 64px;
  margin-bottom: 0;
}

.channel-index-section h2,
.theme-entry-section h2,
.steps-preview-section h2,
.faq-teaser-section h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  margin-bottom: 10px;
  position: relative;
  padding-left: 16px;
}

.channel-index-section h2::before,
.theme-entry-section h2::before,
.steps-preview-section h2::before,
.faq-teaser-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 4px;
  height: 1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-intro {
  color: var(--color-text-dim);
  font-size: 0.92rem;
  margin-bottom: 28px;
  max-width: 640px;
}

.channel-strip {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.channel-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.channel-item:hover {
  border-color: var(--color-accent-border);
  background: var(--color-bg-soft);
}

.channel-item .channel-number {
  width: 52px;
  font-size: 1.05rem;
  padding-top: 2px;
}

.channel-item h3 {
  margin-bottom: 6px;
}

.channel-item p {
  margin-bottom: 8px;
}

.channel-item a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 题材入口行 */
.theme-entry-section {
  padding: 56px 0;
  border-top: 1px solid var(--color-border);
}

.theme-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 36px;
  align-items: center;
}

.theme-figure img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.theme-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.theme-tag {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: border-color var(--transition-fast), color var(--transition-fast),
    background var(--transition-fast);
  min-height: 44px;
}

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

/* 观剧三步预告 */
.steps-preview-section {
  padding: 56px 0;
  border-top: 1px solid var(--color-border);
}

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

.steps-row .step-item {
  display: flex;
  flex-direction: column;
}

.steps-row .step-item a {
  margin-top: auto;
}

/* 问答窄带 */
.faq-teaser-section {
  padding: 56px 0;
  border-top: 1px solid var(--color-border);
}

.faq-teaser-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.faq-teaser-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.faq-teaser-item:hover {
  border-color: var(--color-accent-border);
  background: var(--color-bg-soft);
}

.faq-teaser-item h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.faq-teaser-item p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-bottom: 12px;
  line-height: 1.7;
}

.faq-teaser-item a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 内容边界细条 */
.boundary-strip {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 0 24px;
  flex-wrap: wrap;
}

.boundary-strip h2 {
  font-size: 1rem;
  margin: 0;
  flex-shrink: 0;
}

.boundary-strip p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.boundary-strip a {
  font-size: 0.88rem;
  font-weight: 500;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Pages — 频道总览 (channels)
   -------------------------------------------------------------------------- */

/* 频道查找优先级说明 */
.relation-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

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

.relation-item .relation-lead {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.relation-item p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.75;
  margin-bottom: 10px;
}

.relation-item a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 频道结构分组 */
.channel-group {
  margin-bottom: 32px;
}

.channel-group .group-title {
  font-size: 1.05rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-accent);
  font-weight: 600;
}

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

.channel-row {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  transition: border-color var(--transition-fast);
}

.channel-row:hover {
  border-color: var(--color-accent-border);
}

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

/* 入口核验步骤 */
.verify-steps .step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.step-footer a {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-text-dim);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Pages — 题材专题 (themes)
   -------------------------------------------------------------------------- */

/* 题材边界提示条（顶部） */
.themes-boundary-note {
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 24px;
  margin-bottom: 40px;
}

.themes-boundary-note .section-title {
  font-size: 1rem;
  margin-bottom: 6px;
  padding-left: 0;
}

.themes-boundary-note .section-title::before {
  display: none;
}

.themes-boundary-note p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-bottom: 0;
  line-height: 1.75;
}

/* 题材词入口表 */
.themes-entry-section {
  margin-bottom: 56px;
}

.themes-entry-section .section-title {
  margin-bottom: 6px;
}

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

.theme-entry-row {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1.4fr 1fr;
  gap: 12px 28px;
  align-items: start;
  transition: border-color var(--transition-fast);
}

.theme-entry-row:hover {
  border-color: var(--color-accent-border);
}

.theme-entry-head h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.theme-entry-head .theme-tone {
  font-size: 0.82rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.theme-audience {
  font-size: 0.87rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin-bottom: 0;
}

.theme-channel-path {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.6;
  margin-bottom: 0;
  text-align: right;
}

.theme-channel-path::before {
  content: "→ ";
  color: var(--color-accent);
}

/* 题材词转频道关键词 */
.themes-convert-section {
  margin-bottom: 56px;
}

.themes-convert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.convert-col {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.convert-col h3 {
  font-size: 0.95rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-accent);
}

.convert-col ul li {
  padding: 6px 0;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.convert-col ul li:last-child {
  border-bottom: none;
}

.convert-col ul li span {
  color: var(--color-text);
}

.convert-tip {
  font-size: 0.86rem;
  color: var(--color-text-faint);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0;
}

.convert-tip a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 题材边界提示（底部） */
.themes-boundary-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 28px;
  margin-bottom: 56px;
}

.themes-boundary-section .section-title {
  font-size: 1rem;
  margin-bottom: 10px;
}

.themes-boundary-section p {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-bottom: 0;
  line-height: 1.75;
}

.themes-boundary-section a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* 题材页图片 */
.themes-media-block {
  margin: 40px 0;
}

.themes-media-block img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* 题材页内页相关 */
.inner-page-related {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Pages — 观剧流程 (guide)
   -------------------------------------------------------------------------- */

/* 责任摘要区 */
.responsibility-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

.resp-col {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.resp-col .resp-col-title {
  font-size: 1rem;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.resp-site .resp-col-title {
  color: var(--color-accent);
}

.resp-user .resp-col-title {
  color: var(--color-text);
}

.resp-col .resp-list li {
  padding: 6px 0;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.65;
  padding-left: 18px;
  position: relative;
}

.resp-site .resp-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-size: 0.8rem;
}

.resp-user .resp-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* 流程媒体区 */
.process-media {
  margin: 32px 0;
}

.process-figure img {
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
}

/* 检查点 */
.checkpoint-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  counter-reset: checkpoint;
  margin-bottom: 20px;
}

.checkpoint-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  counter-increment: checkpoint;
}

.checkpoint-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 700;
  border-radius: 50%;
  font-size: 0.88rem;
  flex-shrink: 0;
}

.checkpoint-label::before {
  content: counter(checkpoint, decimal-leading-zero);
}

.checkpoint-text {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin: 0;
  line-height: 1.75;
}

.checkpoint-more {
  font-size: 0.88rem;
}

.checkpoint-more a {
  font-weight: 500;
}

/* 边界提示 aside */
.process-note {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin-bottom: 48px;
}

.process-note .note-title {
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--color-accent);
}

.process-note .note-text {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  margin-bottom: 12px;
  line-height: 1.75;
}

.process-note .note-link {
  font-size: 0.88rem;
  font-weight: 500;
}

/* 下一步 */
.next-section {
  margin-top: 48px;
}

.next-links {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

/* --------------------------------------------------------------------------
   Pages — 短剧词汇 (terms)
   -------------------------------------------------------------------------- */

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

.section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.section-heading .section-index {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.section-heading h2 {
  font-size: 1.25rem;
}

.terms-section .section-desc {
  margin-bottom: 20px;
}

.term-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.term-item {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: start;
}

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

.term-item:hover {
  background: var(--color-bg-soft);
}

.term-name {
  font-size: 1rem;
  margin-bottom: 0;
  padding-top: 2px;
}

.term-name::before {
  content: "▸ ";
  color: var(--color-accent);
  font-size: 0.85rem;
}

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

.term-def {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.75;
  margin-bottom: 6px;
}

.term-where {
  font-size: 0.82rem;
  color: var(--color-text-faint);
  line-height: 1.6;
}

.term-where a {
  color: var(--color-accent);
  font-size: 0.82rem;
}

/* 窄横幅词条 */
.terms-section-narrow {
  margin-bottom: 56px;
}

.term-list-inline {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: none;
  background: transparent;
  border-radius: 0;
  overflow: visible;
}

.term-item-inline {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 22px;
}

.term-item-inline:hover {
  background: var(--color-bg-soft);
  border-color: var(--color-accent-border);
}

.term-item-inline .term-name {
  min-width: 120px;
  margin: 0;
  flex-shrink: 0;
}

.term-item-inline .term-def {
  margin: 0;
  font-size: 0.87rem;
}

/* 词汇页相关 */
.terms-related {
  margin-bottom: 40px;
}

.terms-related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.terms-related-text {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.terms-figure {
  margin: 40px 0;
}

.terms-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* --------------------------------------------------------------------------
   Pages — 短剧问答 (faq)
   -------------------------------------------------------------------------- */

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

.faq-section .section-heading h2 {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.faq-section .section-heading p {
  font-size: 0.85rem;
  color: var(--color-text-faint);
  margin-bottom: 16px;
}

.faq-figure {
  margin: 40px 0;
}

.faq-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.faq-section + .page-end-nav {
  margin-top: 8px;
}

.page-end-nav .end-nav-title {
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: 14px;
}

.page-end-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-end-nav ul li a {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-text-dim);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.page-end-nav ul li a:hover {
  border-color: var(--color-accent-border);
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Pages — 内容边界 (boundary)
   -------------------------------------------------------------------------- */

.layout-shell {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

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

.boundary-figure {
  margin-bottom: 40px;
}

.boundary-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.content-block {
  margin-bottom: 44px;
}

.content-block h2 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.content-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 4px;
  height: 1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.content-block .block-intro {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.collect-list,
.exclude-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.collect-list li,
.exclude-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 22px;
}

.collect-list li h3,
.exclude-list li h3 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  padding-left: 20px;
  position: relative;
}

.collect-list li h3::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-size: 0.9rem;
}

.exclude-list li h3::before {
  content: "×";
  position: absolute;
  left: 0;
  color: #e06c6c;
  font-size: 0.95rem;
}

.collect-list li p,
.exclude-list li p {
  font-size: 0.86rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 待办式确认 */
.check-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-steps li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.check-steps li::before {
  content: "①";
  font-family: var(--font-mono);
  color: var(--color-accent);
  flex-shrink: 0;
}

.check-steps li:nth-child(2)::before {
  content: "②";
}

.check-steps li:nth-child(3)::before {
  content: "③";
}

/* 侧栏 */
.sidebar-note {
  position: sticky;
  top: 20px;
}

/* 边界页末尾导航 */
.next-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.next-links p {
  font-size: 0.85rem;
  color: var(--color-text-faint);
}

.next-links p a {
  display: inline-block;
  margin-right: 8px;
  margin-bottom: 6px;
  padding: 6px 14px;
  font-size: 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-dim);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Pages — 404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 64px - 300px);
  padding: 60px 24px;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 48px 40px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 1rem;
  color: var(--color-text-dim);
  margin-bottom: 10px;
}

.error-desc {
  font-size: 0.88rem;
  color: var(--color-text-faint);
  margin-bottom: 28px;
}

.error-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  background: var(--color-accent);
  color: #1a1a1a;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
}

.error-back:hover {
  background: #f6c95e;
  color: #1a1a1a;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

/* 移动端导航 */
@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 76px 24px 24px;
    z-index: 1000;
    overflow-y: auto;
    gap: 4px;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.4);
  }

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

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

  .nav-list li a {
    padding: 14px 16px;
    font-size: 0.95rem;
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-list li a.is-current {
    background: var(--color-accent-soft);
  }

  .nav-list li a::after {
    content: "→";
    margin-left: auto;
    color: var(--color-text-faint);
    font-size: 0.8rem;
  }

  .nav-list li a.is-current::after {
    color: var(--color-accent);
  }

  /* 页脚两列 */
  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }

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

  /* 首屏调整 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 40px;
  }

  .hero-figure {
    max-width: 520px;
  }

  /* 题材布局调整 */
  .theme-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .theme-figure {
    max-width: 480px;
  }

  /* 频道行调整 */
  .theme-entry-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .theme-channel-path {
    text-align: left;
  }

  /* 边界页侧栏调整 */
  .layout-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .sidebar-note {
    position: static;
  }
}

@media (max-width: 720px) {
  .header-shell {
    padding: 0 16px;
  }

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

  .footer-shell {
    padding: 40px 16px 28px;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-copyright {
    padding: 16px;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  /* 首页模块间距 */
  .hero-section {
    padding: 36px 0 32px;
  }

  .channel-index-section,
  .theme-entry-section,
  .steps-preview-section,
  .faq-teaser-section {
    padding: 40px 0;
  }

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

  .faq-teaser-list {
    grid-template-columns: 1fr;
  }

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

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

  .channel-row {
    flex-direction: column;
    gap: 10px;
  }

  .channel-row .channel-check {
    text-align: left;
    max-width: none;
  }

  .channel-item {
    flex-direction: column;
    gap: 8px;
    padding: 18px 20px;
  }

  .channel-item .channel-number {
    width: auto;
  }

  .boundary-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 18px 20px;
  }

  .term-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 18px;
  }

  .term-item-inline {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .term-item-inline .term-name {
    min-width: 0;
  }

  .themes-convert-grid {
    grid-template-columns: 1fr;
  }

  .convert-col ul li {
    flex-direction: column;
    gap: 2px;
  }

  .next-links {
    flex-direction: column;
  }

  .next-link-card,
  .related-card {
    min-width: 0;
  }

  /* 流程表在手机上允许横向查看 */
  .path-table-wrap {
    margin: 0 -8px;
    padding: 0 8px;
    width: calc(100% + 16px);
  }

  .path-table {
    min-width: 560px;
  }

  /* 面包屑与页头 */
  .breadcrumb {
    padding-top: 16px;
    font-size: 0.8rem;
  }

  .page-header {
    padding: 20px 0 16px;
    margin-bottom: 32px;
  }

  .page-description {
    font-size: 0.72rem;
    padding: 3px 10px;
  }

  .page-intro,
  .page-lead {
    font-size: 0.95rem;
  }

  /* 图片比例调整 */
  .hero-figure img {
    aspect-ratio: 16 / 10;
  }

  .process-figure img,
  .terms-figure img,
  .faq-figure img,
  .boundary-figure img,
  .themes-media-block img {
    aspect-ratio: 16 / 10;
  }

  /* 检查点 */
  .checkpoint-item {
    flex-direction: column;
    gap: 8px;
  }

  /* 问答摘要 */
  .faq-item summary {
    font-size: 0.9rem;
    padding: 14px 44px 14px 16px;
  }

  .faq-item .faq-answer {
    padding: 12px 16px 16px;
  }

  /* 术语相关卡片 */
  .terms-related-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  /* 404 */
  .error-panel {
    padding: 36px 24px;
  }

  .error-code {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .nav-toggle-text {
    display: none;
  }

  .nav-toggle {
    padding: 10px 14px;
  }

  .nav-toggle-icon {
    width: 16px;
  }

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

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

  .theme-tag {
    width: calc(50% - 5px);
    justify-content: center;
    padding: 10px 12px;
  }

  .theme-list {
    gap: 10px;
  }

  .channel-item {
    padding: 16px;
  }

  .faq-teaser-item {
    padding: 18px;
  }
}

/* --------------------------------------------------------------------------
   Motion — 尊重系统减弱动效
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 程序验收反馈：移动端防溢出 */
@media (max-width: 768px) {
  .site-main,
  .site-main * {
    min-width: 0;
    max-width: 100%;
  }

  .site-main :is(h1, h2, h3, h4, p, a, span) {
    overflow-wrap: anywhere;
  }
}