/* 飞鸟机场 (ifeiniao.mom) - Layer 1.5 复古报刊编辑风格样式表 (BEM 命名规范) */
:root {
  --bg-page: #F1E8D5;
  --bg-surface: #F8F2E5;
  --bg-subtle: #E6D9C0;
  --text-main: #201E1A;
  --text-muted: #595043;
  --color-secondary: #71685A;
  --border-line: #C9BEAA;
  --ink-line: #201E1A;
  --accent: #A43B27;
  --accent-hover: #822C1B;
  --accent-soft: #EFE2DC;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: "Songti SC", "SimSun", "STSong", "Noto Serif CJK SC", Georgia, "Times New Roman", serif;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  background-image: linear-gradient(to bottom, rgba(201, 190, 170, 0.14) 1px, transparent 1px);
  background-size: 100% 28px;
}

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

/* 顶部报头导航 (Masthead + Navigation) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(241, 232, 213, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--ink-line);
}

.site-header__masthead {
  max-width: 1140px;
  margin: 0 auto;
  padding: 4px 20px;
  border-bottom: 1px solid var(--border-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.site-header__inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__logo {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: 0.02em;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.site-header__logo-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background-color: var(--accent);
  border: 1px solid var(--ink-line);
}

.site-header__toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--ink-line);
  border-radius: 2px;
  min-width: 44px;
  min-height: 44px;
  padding: 8px;
  color: var(--text-main);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-header__link {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0 12px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.site-header__link:hover,
.site-header__link--active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background-color: var(--accent-soft);
}

/* 复古油墨按压感按钮 (Solid ink-style pressed state) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  min-width: 44px;
  padding: 10px 24px;
  font-size: 0.96rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid var(--ink-line);
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink-line);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
}

.btn:hover {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink-line);
}

.btn:active {
  transform: translate(3px, 3px);
  box-shadow: 0 0 0 var(--ink-line);
}

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

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

.btn--secondary {
  background-color: var(--bg-page);
  color: var(--text-main);
}

.btn--secondary:hover {
  background-color: var(--bg-subtle);
  color: var(--accent);
}

.btn--block {
  width: 100%;
}

/* 头版头条 Hero (Newspaper Front Page Layout) */
.hero-panel {
  padding: 44px 20px 56px;
  border-bottom: 3px double var(--ink-line);
  background-color: var(--bg-surface);
}

.hero-panel__edition {
  max-width: 1140px;
  margin: 0 auto 24px;
  padding: 8px 0;
  border-top: 2px solid var(--ink-line);
  border-bottom: 1px solid var(--border-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.hero-panel__grid {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 36px;
  align-items: start;
}

.hero-panel__content {
  padding-right: 28px;
  border-right: 1px solid var(--border-line);
}

.hero-panel__kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  margin-bottom: 12px;
}

.hero-panel__title {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.6vw, 2.75rem);
  line-height: 1.25;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hero-panel__subtitle {
  font-size: 1.06rem;
  color: var(--text-muted);
  margin-bottom: 26px;
  max-width: 540px;
}

.hero-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-panel__trust {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-top: 16px;
  border-top: 1px solid var(--border-line);
}

.hero-panel__console {
  border: 1px solid var(--ink-line);
  background-color: var(--bg-page);
  padding: 12px;
}

.hero-panel__console-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border-line);
  font-size: 0.82rem;
  color: var(--text-main);
  font-weight: 700;
}

.hero-panel__console-status {
  color: var(--accent);
}

.hero-panel__svg {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-line);
  background-color: var(--bg-surface);
}

.hero-panel__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 10px;
  border-top: 1px solid var(--border-line);
  padding-top: 8px;
}

.hero-panel__metric-cell {
  padding: 4px 10px;
  border-right: 1px solid var(--border-line);
  font-size: 0.8rem;
}

.hero-panel__metric-cell:last-child {
  border-right: none;
}

.hero-panel__metric-label {
  display: block;
  color: var(--text-muted);
}

.hero-panel__metric-val {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--text-main);
}

/* 通用报刊版面区块 (Numbered Newspaper Sections & Fine Rules) */
.section-block {
  padding: 60px 20px;
  border-bottom: 1px solid var(--border-line);
}

.section-block--alt {
  background-color: var(--bg-surface);
}

.section-block__container {
  max-width: 1140px;
  margin: 0 auto;
}

.section-block__header {
  margin-bottom: 36px;
  padding-top: 12px;
  border-top: 3px double var(--ink-line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-block__kicker {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.section-block__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.section-block__desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  max-width: 680px;
}

/* 使用场景分栏 (Multi-column Editorial Layout) */
.scenario-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink-line);
  border-bottom: 1px solid var(--ink-line);
  background-color: var(--bg-surface);
}

.scenario-matrix__item {
  padding: 28px 24px;
  border-right: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.scenario-matrix__item:last-child {
  border-right: none;
}

.scenario-matrix__device {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  background-color: var(--accent-soft);
  border: 1px solid var(--border-line);
  padding: 2px 10px;
}

.scenario-matrix__title {
  font-family: var(--font-serif);
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-main);
}

.scenario-matrix__desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 特性卡片：报刊文章预览风格 (Feature cards resemble article previews) */
.feature-ledger {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--ink-line);
  border-left: 1px solid var(--border-line);
  background-color: var(--bg-page);
}

.feature-ledger__item {
  border-right: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  padding: 28px 24px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: background-color 0.15s ease;
}

.feature-ledger__item:hover {
  background-color: var(--bg-surface);
}

.feature-ledger__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background-color: var(--bg-surface);
  color: var(--accent);
  border: 1px solid var(--ink-line);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-ledger__title {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
  display: inline-block;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease;
}

.feature-ledger__item:hover .feature-ledger__title {
  border-bottom-color: var(--accent);
}

.feature-ledger__desc {
  color: var(--text-muted);
  font-size: 0.94rem;
}

/* 流媒体支持板块 */
.media-board__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--ink-line);
  border-left: 1px solid var(--border-line);
  background-color: var(--bg-surface);
}

.media-board__cell {
  padding: 22px 14px;
  border-right: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.media-board__icon {
  color: var(--text-main);
}

.media-board__name {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--text-main);
}

.media-board__tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background-color: var(--accent-soft);
  padding: 2px 8px;
}

.media-board__note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.media-board__note a {
  color: var(--accent);
  font-weight: 700;
}

/* AI 工具支持矩阵 */
.ai-matrix__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.ai-matrix__item {
  border: 1px solid var(--border-line);
  border-top: 2px solid var(--ink-line);
  background-color: var(--bg-page);
  padding: 20px;
}

.ai-matrix__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-line);
}

.ai-matrix__name {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text-main);
}

.ai-matrix__region {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}

.ai-matrix__usage {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.ai-matrix__disclaimer {
  margin-top: 16px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* 结构化报刊对照表 (Structured Editorial Tables) */
.benefit-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-surface);
  border-top: 2px solid var(--ink-line);
  border-bottom: 2px solid var(--ink-line);
}

.benefit-table__head {
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--ink-line);
}

.benefit-table__th,
.benefit-table__td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-line);
  border-right: 1px solid var(--border-line);
  font-size: 0.95rem;
}

.benefit-table__th:last-child,
.benefit-table__td:last-child {
  border-right: none;
}

.benefit-table__th {
  font-family: var(--font-serif);
  font-weight: 800;
  color: var(--text-main);
}

.benefit-table__td--highlight {
  color: var(--accent);
  font-weight: 700;
  background-color: var(--accent-soft);
}

/* 现代易扫读定价区 (Pricing: Modern & Easy to Scan) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-grid__card {
  background-color: var(--bg-page);
  border: 1px solid var(--border-line);
  border-top: 3px solid var(--ink-line);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-grid__card--featured {
  background-color: var(--bg-surface);
  border: 2px solid var(--ink-line);
  border-top: 4px solid var(--accent);
  box-shadow: 4px 4px 0 var(--border-line);
}

.pricing-grid__badge {
  display: inline-block;
  align-self: flex-start;
  background-color: var(--accent);
  color: #FFFFFF;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 2px 10px;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.pricing-grid__name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 4px;
}

.pricing-grid__target {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.pricing-grid__price {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-line);
}

.pricing-grid__unit {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-grid__list {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-grid__item {
  font-size: 0.93rem;
  color: var(--text-main);
  padding-left: 18px;
  position: relative;
}

.pricing-grid__item::before {
  content: "▪";
  position: absolute;
  left: 2px;
  color: var(--accent);
}

/* 常见问题手风琴 */
.faq-list {
  max-width: 840px;
  border-top: 2px solid var(--ink-line);
}

.faq-list__item {
  border-bottom: 1px solid var(--border-line);
  background-color: var(--bg-surface);
}

.faq-list__question {
  width: 100%;
  min-height: 54px;
  padding: 16px 20px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
}

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

.faq-list__icon {
  flex-shrink: 0;
  font-family: var(--font-sans);
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.15s ease;
}

.faq-list__question[aria-expanded="true"] .faq-list__icon {
  transform: rotate(45deg);
}

.faq-list__answer {
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-list__answer[hidden] {
  display: none;
}

/* 终局行动召唤栏 (独立于 section-block) */
.final-cta {
  padding: 52px 20px;
  background-color: var(--bg-subtle);
  border-top: 2px solid var(--ink-line);
  border-bottom: 3px double var(--ink-line);
}

.final-cta__box {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.final-cta__title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.2vw, 1.68rem);
  font-weight: 900;
  color: var(--text-main);
}

/* 页脚 */
.site-footer {
  padding: 40px 20px 48px;
  background-color: var(--bg-surface);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer__inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.site-footer__link {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-footer__link:hover {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer__disclosure {
  padding-top: 14px;
  border-top: 1px solid var(--border-line);
  color: var(--text-muted);
}

.site-footer__copy {
  color: var(--text-muted);
}

/* 移动端吸底转化栏 */
.sticky-bar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  background-color: var(--bg-surface);
  border-top: 2px solid var(--ink-line);
  padding: 10px 16px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transform: translateY(100%);
  transition: transform 0.2s ease;
}

.sticky-bar--visible {
  transform: translateY(0);
}

.sticky-bar__text {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-main);
}

/* 面包屑导航 */
.breadcrumb-nav {
  max-width: 1140px;
  margin: 0 auto;
  padding: 16px 20px 0;
}

.breadcrumb-nav__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumb-nav__link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.breadcrumb-nav__link:hover {
  text-decoration: underline;
}

/* 指南列表页卡片 (Editorial Article Cards with subtle underline & crop transition) */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.guide-grid__card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-top: 2px solid var(--ink-line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.guide-grid__thumb {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 1px solid var(--border-line);
  background-color: var(--bg-page);
  transition: transform 0.25s ease;
}

.guide-grid__card:hover .guide-grid__thumb {
  transform: scale(1.02);
}

.guide-grid__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
  gap: 12px;
}

.guide-grid__meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 6px;
}

.guide-grid__title {
  font-family: var(--font-serif);
  font-size: 1.16rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.4;
  margin-top: 8px;
}

.guide-grid__title-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

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

.guide-grid__excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.guide-grid__link {
  align-self: flex-start;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.92rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid var(--accent);
}

/* 文章详情页与合规页报刊排版 */
.article-layout,
.legal-doc {
  max-width: 840px;
  margin: 0 auto;
  padding: 36px 24px 64px;
  background-color: var(--bg-surface);
  border-left: 1px solid var(--border-line);
  border-right: 1px solid var(--border-line);
}

.article-layout__header,
.legal-doc__header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 3px double var(--ink-line);
}

.article-layout__title,
.legal-doc__title {
  font-family: var(--font-serif);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 12px;
}

.article-layout__meta,
.legal-doc__meta {
  font-size: 0.86rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.article-layout__lead {
  font-size: 1.04rem;
  color: var(--text-main);
  background-color: var(--bg-page);
  border-left: 4px solid var(--accent);
  border-top: 1px solid var(--border-line);
  border-right: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  padding: 16px 20px;
  margin-bottom: 28px;
}

.article-layout__body h2,
.legal-doc__section h2 {
  font-family: var(--font-serif);
  font-size: 1.38rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink-line);
}

.article-layout__body h3,
.legal-doc__section h3 {
  font-family: var(--font-serif);
  font-size: 1.14rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 22px 0 10px;
}

.article-layout__body p,
.legal-doc__section p {
  margin-bottom: 16px;
  color: var(--text-main);
}

.article-layout__body ul,
.article-layout__body ol,
.legal-doc__section ul {
  margin: 0 0 18px 22px;
}

.article-layout__body li,
.legal-doc__section li {
  margin-bottom: 8px;
}

.article-layout__body a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
}

.article-layout__table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 24px;
  background-color: var(--bg-page);
  border-top: 2px solid var(--ink-line);
  border-bottom: 2px solid var(--ink-line);
}

.article-layout__table th,
.article-layout__table td {
  border: 1px solid var(--border-line);
  padding: 12px 14px;
  text-align: left;
  font-size: 0.92rem;
}

.article-layout__table th {
  font-family: var(--font-serif);
  background-color: var(--bg-subtle);
  font-weight: 800;
}

.article-layout__faq {
  margin-top: 36px;
  padding: 24px;
  background-color: var(--bg-page);
  border: 1px solid var(--border-line);
}

.article-layout__cta {
  margin-top: 36px;
  padding: 28px 24px;
  background-color: var(--accent-soft);
  border: 2px solid var(--ink-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.article-layout__related {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 2px solid var(--ink-line);
}

.article-layout__related-list {
  list-style: none;
  margin: 12px 0 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.article-layout__related-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  background-color: var(--bg-page);
  border: 1px solid var(--border-line);
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.94rem;
}

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

/* 网站地图列表 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.sitemap-grid__group {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-top: 2px solid var(--ink-line);
  padding: 24px;
}

.sitemap-grid__list {
  list-style: none;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sitemap-grid__link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.sitemap-grid__link:hover {
  text-decoration: underline;
}

/* 响应式适配 (移动端垂直阅读流，精简装饰性元数据) */
@media (max-width: 960px) {
  .scenario-matrix,
  .pricing-grid,
  .guide-grid,
  .ai-matrix__grid {
    grid-template-columns: 1fr;
  }
  .scenario-matrix__item {
    border-right: none;
    border-bottom: 1px solid var(--border-line);
  }
  .media-board__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header__masthead,
  .hero-panel__edition {
    display: none;
  }
  .site-header__toggle {
    display: inline-flex;
  }
  .site-header__nav {
    display: none;
  }
  .site-header__nav--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 2px solid var(--ink-line);
    padding: 12px 20px;
    align-items: stretch;
  }
  .hero-panel__grid,
  .feature-ledger,
  .sitemap-grid,
  .article-layout__related-list {
    grid-template-columns: 1fr;
  }
  .hero-panel__content {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid var(--border-line);
    padding-bottom: 24px;
  }
  .media-board__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .benefit-table__th,
  .benefit-table__td {
    padding: 12px 10px;
    font-size: 0.86rem;
  }
  .sticky-bar {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}