/* ==================================================
   网际快车云 - 第3套“问题切面系统”全局样式表
   Visual Theme: Problem Facet System
   ================================================== */

:root {
  --bg: #F4F5F6;
  --surface: #FFFFFF;
  --text: #292B31;
  --body: #62656D;
  --muted: #8E9198;
  --graphite: #373940;
  --graphite-dark: #2B2D33;
  --violet-gray: #626176;
  --violet-dark: #4D4B60;
  --violet-soft: #ECEBF0;
  --wine: #8A5660;
  --wine-dark: #70444D;
  --wine-soft: #F2E6E8;
  --copper: #AD8464;
  --copper-dark: #87654C;
  --copper-soft: #F4EBE4;
  --green-gray: #737C76;
  --green-soft: #EBEEEC;
  --border: #D9DBDF;

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

/* Reset & Basic */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-main);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

a {
  color: var(--violet-gray);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

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

/* Accessibility Focus */
:focus-visible {
  outline: 2px solid var(--wine);
  outline-offset: 2px;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo: 3 Vertical Facets of Different Heights */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-facets {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 28px;
  padding: 2px 0;
}

.logo-facet {
  width: 6px;
  border-radius: 1px;
}

.facet-1 {
  height: 24px;
  background-color: var(--graphite);
}

.facet-2 {
  height: 14px;
  background-color: var(--wine);
}

.facet-3 {
  height: 20px;
  background-color: var(--copper);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--graphite-dark);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.brand-sub {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.2px;
}

/* Desktop Navigation */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  font-size: 14px;
  color: var(--body);
  font-weight: 500;
  padding: 6px 4px;
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--graphite-dark);
  border-bottom: 2px solid var(--wine);
}

.header-cta {
  display: flex;
  align-items: center;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--graphite-dark);
  color: var(--surface);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 4px;
  border: 1px solid var(--graphite-dark);
  transition: all 0.2s ease;
}

.btn-cta:hover {
  background-color: var(--wine);
  border-color: var(--wine);
  color: var(--surface);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--surface);
  color: var(--graphite-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--graphite);
  background-color: var(--violet-soft);
  transform: translateY(-2px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  color: var(--graphite);
}

/* Mobile Drawer Nav */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 99;
  padding: 24px 20px;
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
}

.mobile-nav-item a {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

/* Main Content Area */
main {
  flex: 1;
}

/* Component: Problem Facet Box (切面块) */
.facet-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--graphite);
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.facet-box:hover {
  transform: translateY(-2px);
  border-color: var(--violet-gray);
}

.facet-box.wine-edge {
  border-top-color: var(--wine);
}

.facet-box.copper-edge {
  border-top-color: var(--copper);
}

.facet-box.violet-edge {
  border-top-color: var(--violet-gray);
}

.facet-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  background-color: var(--violet-soft);
  color: var(--violet-dark);
  border-radius: 2px;
  margin-bottom: 12px;
}

.facet-label.wine {
  background-color: var(--wine-soft);
  color: var(--wine-dark);
}

.facet-label.copper {
  background-color: var(--copper-soft);
  color: var(--copper-dark);
}

/* Section Common Styling */
.problem-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--wine);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  display: block;
}

.section-h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--graphite-dark);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-direct-answer {
  background-color: var(--surface);
  border-left: 4px solid var(--wine);
  padding: 16px 20px;
  font-size: 15px;
  color: var(--text);
  margin-bottom: 32px;
  border-radius: 0 4px 4px 0;
}

.section-direct-answer strong {
  color: var(--wine-dark);
}

/* Hero Section: 问题切面 Hero */
.hero-section {
  padding: 64px 0 80px 0;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
}

.hero-header {
  max-width: 860px;
  margin-bottom: 40px;
}

.hero-subhead {
  font-size: 16px;
  font-weight: 700;
  color: var(--wine);
  margin-bottom: 12px;
  display: block;
}

.hero-h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--graphite-dark);
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 24px;
}

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

.hero-text-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--violet-gray);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* Asymmetric Facet Grid in Hero (Not uniform cards!) */
.hero-facet-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.hero-facet-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.hero-facet-item:hover {
  transform: translateY(-3px);
  border-color: var(--graphite);
}

.hero-facet-1 {
  grid-column: span 6;
  border-top: 4px solid var(--wine);
  background-color: var(--surface);
}

.hero-facet-2 {
  grid-column: span 6;
  border-top: 4px solid var(--copper);
}

.hero-facet-3 {
  grid-column: span 4;
  border-top: 3px solid var(--graphite);
}

.hero-facet-4 {
  grid-column: span 8;
  border-top: 3px solid var(--violet-gray);
  background-color: #FAFAFC;
}

.hero-facet-5 {
  grid-column: span 4;
  border-top: 3px solid var(--green-gray);
}

.hero-facet-6 {
  grid-column: span 5;
  border-top: 3px solid var(--wine);
}

.hero-facet-7 {
  grid-column: span 3;
  border-top: 3px solid var(--copper);
}

.hero-facet-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin-bottom: 8px;
}

.hero-facet-desc {
  font-size: 13px;
  color: var(--body);
  margin-bottom: 16px;
  flex: 1;
}

.hero-facet-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--violet-dark);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hero-facet-link:hover {
  color: var(--wine);
}

/* Section 01: 大问题切面 + 六个检查边条 */
.check-strip-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
}

.main-facet-summary {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--wine);
  padding: 32px 24px;
}

.main-facet-summary h3 {
  font-size: 20px;
  color: var(--graphite-dark);
  margin-bottom: 12px;
}

.main-facet-summary p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: 20px;
}

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

.check-strip-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--violet-gray);
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color 0.2s;
}

.check-strip-item:hover {
  border-left-color: var(--wine);
}

.check-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--wine);
  background: var(--wine-soft);
  padding: 4px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

.check-content h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin-bottom: 4px;
}

.check-content p {
  font-size: 13px;
  color: var(--body);
}

/* Section 04: AI Platform Slices */
.ai-facet-layout {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.ai-slice-large {
  grid-column: span 12;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--wine);
  padding: 24px;
}

.ai-slice-medium-1 {
  grid-column: span 6;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--violet-gray);
  padding: 20px;
}

.ai-slice-medium-2 {
  grid-column: span 6;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--copper);
  padding: 20px;
}

.ai-slice-narrow-index {
  grid-column: span 12;
  background: var(--violet-soft);
  border: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.narrow-index-item {
  font-size: 14px;
  color: var(--graphite);
}

.narrow-index-item strong {
  color: var(--graphite-dark);
}

/* Section 10: HTML Table */
.line-table-wrapper {
  width: 100%;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  margin-top: 24px;
}

.line-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.line-table th {
  background-color: var(--violet-soft);
  color: var(--graphite-dark);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.line-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--body);
  vertical-align: top;
}

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

.line-table td strong {
  color: var(--graphite-dark);
}

/* Section 12: 需求症状 → 方案结果 (Plan List Layout) */
.plan-facet-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.plan-facet-row {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: border-color 0.2s ease;
}

.plan-facet-row:hover {
  border-color: var(--graphite);
}

.plan-facet-row.primary-plan {
  background-color: var(--violet-soft);
  border: 2px solid var(--violet-gray);
  position: relative;
}

.plan-demand {
  flex: 1;
  max-width: 420px;
}

.plan-demand-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 4px;
}

.plan-demand-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--graphite-dark);
}

.plan-line-divider {
  width: 40px;
  height: 2px;
  background-color: var(--copper);
  flex-shrink: 0;
}

.plan-result {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-shrink: 0;
}

.plan-info {
  text-align: right;
}

.plan-name-tag {
  font-size: 16px;
  font-weight: 700;
  color: var(--graphite-dark);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.badge-recommend {
  font-size: 11px;
  font-weight: 700;
  background-color: var(--wine);
  color: var(--surface);
  padding: 2px 6px;
  border-radius: 2px;
}

.plan-meta {
  font-size: 13px;
  color: var(--body);
}

.plan-price {
  font-size: 22px;
  font-weight: 800;
  color: var(--wine-dark);
  font-family: var(--font-mono);
}

.plan-price span {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
}

/* Section 13: 排障文章中心 (Problem Index Slices) */
.article-index-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.article-index-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--graphite);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-index-card.col-6 { grid-column: span 6; }
.article-index-card.col-4 { grid-column: span 4; }
.article-index-card.col-8 { grid-column: span 8; }
.article-index-card.col-12 { grid-column: span 12; border-top-color: var(--wine); }

.article-cat-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--wine);
  margin-bottom: 6px;
  display: inline-block;
}

.article-title-link {
  font-size: 16px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin-bottom: 8px;
  display: block;
}

.article-title-link:hover {
  color: var(--wine);
}

.article-quick-verdict {
  font-size: 13px;
  color: var(--body);
  margin-bottom: 16px;
  flex: 1;
}

.article-meta-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

/* Section 14: FAQ Accordion System */
.faq-facet-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.faq-facet-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--violet-gray);
  transition: border-color 0.2s ease;
}

.faq-facet-item.open {
  border-left-color: var(--wine);
}

.faq-trigger {
  width: 100%;
  padding: 16px 20px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}

.faq-num-q {
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.faq-q-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--graphite-dark);
}

.faq-icon {
  font-size: 18px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.2s ease;
}

.faq-facet-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 20px 20px 48px;
  font-size: 14px;
  color: var(--body);
  line-height: 1.7;
}

.faq-facet-item.open .faq-answer {
  display: block;
}

/* Article Page Layout */
.article-page-container {
  padding: 40px 0 80px 0;
}

.article-layout-grid {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 32px;
  align-items: start;
}

.article-main-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 40px;
  max-width: 820px;
  width: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

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

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

.article-h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--graphite-dark);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.article-summary-box {
  background-color: var(--wine-soft);
  border-left: 4px solid var(--wine);
  padding: 20px;
  margin-bottom: 32px;
  border-radius: 0 4px 4px 0;
}

.article-summary-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--wine-dark);
  margin-bottom: 6px;
}

.article-summary-content {
  font-size: 15px;
  color: var(--graphite-dark);
  line-height: 1.6;
}

.article-body {
  font-size: 16px;
  color: var(--body);
  line-height: 1.8;
}

.article-body h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--graphite);
  margin: 24px 0 12px 0;
}

.article-body p {
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin: 0 0 20px 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body strong {
  color: var(--graphite-dark);
}

.article-body blockquote {
  background: var(--violet-soft);
  border-left: 4px solid var(--violet-gray);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 15px;
}

.article-links-box {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 20px;
}

.article-links-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin-bottom: 12px;
}

.article-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-links-list a {
  font-size: 14px;
  color: var(--violet-gray);
}

.article-sidebar {
  position: sticky;
  top: 96px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px;
}

.toc-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--graphite-dark);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.toc-list a {
  color: var(--body);
  display: block;
}

.toc-list a:hover, .toc-list a.active {
  color: var(--wine);
  font-weight: 600;
}

/* Category Page Layout */
.cat-hero {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}

.cat-h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--graphite-dark);
  margin-bottom: 12px;
}

.cat-sub {
  font-size: 16px;
  color: var(--body);
  max-width: 760px;
}

/* Footer: 深石墨 (Dark Graphite #2B2D33) Problem Directory Footer */
.site-footer {
  background-color: var(--graphite-dark);
  color: #F7F7F8;
  padding: 64px 0 32px 0;
  margin-top: auto;
  border-top: 3px solid var(--wine);
}

.footer-top {
  display: grid;
  grid-template-columns: 280px repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid #3E414B;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-brand-desc {
  font-size: 13px;
  color: #C8C9CE;
  line-height: 1.6;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--violet-soft);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-col-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 12px;
  background-color: var(--copper);
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-list a {
  font-size: 13px;
  color: #C8C9CE;
  transition: color 0.15s;
}

.footer-nav-list a:hover {
  color: #FFFFFF;
}

.footer-mid {
  padding: 24px 0;
  border-bottom: 1px solid #3E414B;
}

.friend-links-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--violet-soft);
  margin-bottom: 12px;
}

.friend-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.friend-links-list a {
  font-size: 13px;
  color: #C8C9CE;
}

.friend-links-list a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-facet-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .hero-facet-1, .hero-facet-2, .hero-facet-4 {
    grid-column: span 6;
  }
  .hero-facet-3, .hero-facet-5, .hero-facet-6, .hero-facet-7 {
    grid-column: span 3;
  }
  .check-strip-container {
    grid-template-columns: 1fr;
  }
  .article-layout-grid {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-h1 {
    font-size: 28px;
  }
  .section-h2 {
    font-size: 22px;
  }
  .hero-facet-grid {
    display: flex;
    flex-direction: column;
  }
  .ai-facet-layout {
    display: flex;
    flex-direction: column;
  }
  .article-index-grid {
    display: flex;
    flex-direction: column;
  }
  .plan-facet-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .plan-line-divider {
    display: none;
  }
  .plan-result {
    width: 100%;
    justify-content: space-between;
  }
  .plan-info {
    text-align: left;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .line-table {
    display: block;
  }
  .line-table th, .line-table td {
    padding: 10px 12px;
  }
}

/* Reduced Motion */
@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;
  }
}