/* ==========================================================================
   小牛VPN · xiaoniuvpn.sbs
   瑞士国际主义排版风格 (Swiss International Typographic Style)
   Palette: #FAFAF8 (Canvas) / #111111 (Ink) / #2437E8 (Klein Blue) / #E7E7E2 (Hairline) / #6B6B66 (Muted)
   ========================================================================== */

:root {
  --bg: #FAFAF8;
  --ink: #111111;
  --klein: #2437E8;
  --klein-dark: #1A29C2;
  --hairline: #E7E7E2;
  --muted: #6B6B66;
  --surface: #FFFFFF;
  --radius: 2px;
  --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
  min-width: 320px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.klein {
  color: var(--klein);
}

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

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

.wordmark {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.18s ease;
  padding: 10px 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.nav-active {
  color: var(--ink);
}

.main-nav a.nav-highlight {
  color: var(--klein);
  font-weight: 600;
}

.main-nav a.nav-highlight:hover {
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   2. 排版式 Hero (Typographic Hero)
   -------------------------------------------------------------------------- */
.hero {
  padding: 96px 0 88px;
  border-bottom: 1px solid var(--hairline);
}

.hero-kicker {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 6.8rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
  color: var(--ink);
}

.hero-subtitle {
  max-width: 680px;
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--muted);
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 32px;
  background-color: var(--ink);
  color: var(--bg);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--klein);
  border-color: var(--klein);
  color: #FFFFFF;
}

.btn-klein {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 32px;
  background-color: var(--klein);
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--klein);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
}

.btn-klein:hover {
  background-color: var(--ink);
  border-color: var(--ink);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background-color: transparent;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, color 0.18s ease;
  cursor: pointer;
}

.btn-outline:hover {
  background-color: var(--ink);
  color: var(--bg);
}

.link-underline {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding: 4px 0;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.link-underline:hover {
  color: var(--klein);
  border-bottom-color: var(--klein);
}

/* --------------------------------------------------------------------------
   3. 全宽数据带 (Data Strip)
   -------------------------------------------------------------------------- */
.data-strip {
  border-bottom: 1px solid var(--hairline);
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.data-cell {
  padding: 36px 24px;
  border-right: 1px solid var(--hairline);
}

.data-cell:first-child {
  padding-left: 0;
}

.data-cell:last-child {
  border-right: none;
  padding-right: 0;
}

.data-value {
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 6px;
}

.data-label {
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Section Common Framing
   -------------------------------------------------------------------------- */
.section {
  padding: 88px 0;
  border-bottom: 1px solid var(--hairline);
}

.section-header {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 32px;
  margin-bottom: 56px;
  align-items: start;
}

.section-index {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--klein);
  padding-top: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.18;
  color: var(--ink);
}

.section-desc {
  margin-top: 16px;
  max-width: 640px;
  color: var(--muted);
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   4. 核心优势卡片 (3-Column Swiss Visual Cards)
   -------------------------------------------------------------------------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.adv-card {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 32px;
  background-color: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.adv-visual {
  border: 1px solid var(--hairline);
  background-color: var(--bg);
  padding: 16px;
  border-radius: var(--radius);
}

.adv-tag {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--klein);
}

.adv-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.adv-card p {
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   5. 编号编辑式功能列表 (01–06 Feature Rows)
   -------------------------------------------------------------------------- */
.feature-list {
  border-top: 1px solid var(--hairline);
}

.feature-row {
  display: grid;
  grid-template-columns: 80px 300px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
  transition: transform 0.22s ease;
}

.feature-row:hover {
  transform: translateX(10px);
}

.feature-num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--klein);
  font-variant-numeric: tabular-nums;
}

.feature-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.feature-detail {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   6. 流媒体与 AI 支持图卡 (Streaming & AI Matrix)
   -------------------------------------------------------------------------- */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.matrix-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 36px;
  background-color: var(--bg);
}

.matrix-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}

.matrix-head h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.matrix-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--klein);
  border: 1px solid var(--klein);
  padding: 3px 10px;
  border-radius: var(--radius);
}

.matrix-visual {
  margin-bottom: 24px;
  border: 1px solid var(--hairline);
  padding: 16px;
  border-radius: var(--radius);
}

.matrix-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.matrix-item {
  border: 1px solid var(--hairline);
  padding: 14px 16px;
  border-radius: var(--radius);
}

.matrix-item strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.matrix-item span {
  font-size: 0.84rem;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   7. 3 列细线定价表格 (3-Column Hairline Pricing)
   -------------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.plan-col {
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
}

.plan-header {
  padding: 28px 32px;
  border-bottom: 1px solid var(--ink);
}

.plan-col.plan-featured .plan-header {
  background-color: var(--klein);
  color: #FFFFFF;
}

.plan-tag {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  color: var(--muted);
}

.plan-col.plan-featured .plan-tag {
  color: rgba(255, 255, 255, 0.85);
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.plan-price span {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0;
}

.plan-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
}

.plan-specs {
  list-style: none;
}

.plan-specs li {
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.94rem;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.plan-specs li:last-child {
  border-bottom: none;
}

.plan-specs .spec-k {
  color: var(--muted);
}

.plan-specs .spec-v {
  font-weight: 600;
  text-align: right;
}

.plan-cta {
  width: 100%;
}

/* --------------------------------------------------------------------------
   8. 用户评价 (Editorial Reviews)
   -------------------------------------------------------------------------- */
.rating-summary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--hairline);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 16px;
}

.rating-score {
  color: var(--klein);
  font-weight: 800;
  font-size: 1rem;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.review-card {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.review-quote {
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--ink);
}

.review-meta {
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
  font-size: 0.84rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.review-author {
  font-weight: 700;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   9. FAQ 编号细线行 (Native <details> / <summary>)
   -------------------------------------------------------------------------- */
.faq-list {
  border-top: 1px solid var(--hairline);
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 72px 1fr 32px;
  gap: 16px;
  align-items: center;
  padding: 26px 0;
  min-height: 64px;
}

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

.faq-num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--klein);
  font-variant-numeric: tabular-nums;
}

.faq-question {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.faq-toggle {
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--ink);
  text-align: right;
  line-height: 1;
}

.faq-toggle::before {
  content: "+";
}

.faq-item[open] .faq-toggle::before {
  content: "–";
  color: var(--klein);
}

.faq-answer {
  padding: 0 32px 28px 88px;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 820px;
}

/* --------------------------------------------------------------------------
   10. 极简页脚 (Minimal Footer - 4 Links Only)
   -------------------------------------------------------------------------- */
.site-footer {
  padding: 48px 0 56px;
  border-top: 1px solid var(--hairline);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-links a:hover {
  color: var(--klein);
  border-bottom-color: var(--klein);
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   Subpages, Articles & Network Check Utility Styles
   -------------------------------------------------------------------------- */
.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
}

.breadcrumb a:hover {
  color: var(--klein);
  border-bottom-color: var(--klein);
}

.page-title {
  font-size: clamp(1.9rem, 4.2vw, 3.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 18px;
}

.page-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--muted);
}

.article-layout {
  padding: 64px 0 88px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  align-items: start;
}

.article-body {
  max-width: 780px;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 44px 0 18px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  line-height: 1.35;
}

.article-body h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.article-body h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--ink);
}

.article-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: #222220;
  margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
  margin: 16px 0 24px 22px;
}

.article-body li {
  font-size: 0.98rem;
  line-height: 1.8;
  color: #222220;
  margin-bottom: 10px;
}

.article-body a {
  color: var(--klein);
  font-weight: 600;
  border-bottom: 1px solid var(--klein);
}

.article-body a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.article-callout {
  border: 1px solid var(--ink);
  border-left: 4px solid var(--klein);
  padding: 24px 28px;
  margin: 32px 0;
  background-color: var(--bg);
}

.article-sidebar {
  border: 1px solid var(--hairline);
  padding: 28px;
  position: sticky;
  top: 88px;
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--klein);
  margin-bottom: 14px;
}

.sidebar-desc {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 20px;
  line-height: 1.65;
}

.sidebar-links {
  list-style: none;
  margin-top: 24px;
  border-top: 1px solid var(--hairline);
}

.sidebar-links li {
  border-bottom: 1px solid var(--hairline);
}

.sidebar-links a {
  display: block;
  padding: 12px 0;
  font-size: 0.88rem;
  color: var(--ink);
  font-weight: 500;
}

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

/* Tables on subpages */
.swiss-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--ink);
  margin: 28px 0;
}

.swiss-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
  text-align: left;
}

.swiss-table th {
  background-color: var(--ink);
  color: var(--bg);
  font-weight: 700;
  padding: 16px 20px;
  border-right: 1px solid #333330;
}

.swiss-table td {
  padding: 16px 20px;
  border-top: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
  vertical-align: top;
}

.swiss-table th:last-child,
.swiss-table td:last-child {
  border-right: none;
}

/* Hub Article List */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}

.hub-card {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
}

.hub-tag-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--muted);
}

.hub-tag {
  color: var(--klein);
  font-weight: 700;
}

.hub-card h2 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.4;
}

.hub-card p {
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.75;
}

/* Network Check Interactive Box */
.check-panel {
  border: 1px solid var(--ink);
  padding: 36px;
  margin: 36px 0;
}

.check-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.check-btn {
  min-height: 48px;
  padding: 12px 16px;
  background-color: var(--bg);
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background-color 0.16s ease, color 0.16s ease;
}

.check-btn:hover,
.check-btn.is-selected {
  background-color: var(--klein);
  border-color: var(--klein);
  color: #FFFFFF;
}

.check-result {
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
  margin-top: 12px;
}

.check-result h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--klein);
}

.check-result p {
  font-size: 0.96rem;
  line-height: 1.75;
  margin-bottom: 12px;
}

/* Legal / Info Subpage Blocks */
.doc-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--hairline);
}

.doc-section:last-child {
  border-bottom: none;
}

.doc-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
}

.doc-grid h2 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.doc-grid p,
.doc-grid ul {
  font-size: 0.96rem;
  color: #222220;
  line-height: 1.8;
}

.doc-grid ul {
  margin-left: 20px;
}

.doc-grid li {
  margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   Reveal Animation (IntersectionObserver Fade-Up)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive Adaptation (Mobile down to 360px)
   -------------------------------------------------------------------------- */
@media (max-width: 980px) {
  .data-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .data-cell:nth-child(2) {
    border-right: none;
  }
  .data-cell:nth-child(1),
  .data-cell:nth-child(2) {
    border-bottom: 1px solid var(--hairline);
  }
  .data-cell:nth-child(3) {
    padding-left: 0;
  }
  .adv-grid,
  .pricing-grid,
  .reviews-grid,
  .matrix-grid,
  .hub-grid {
    grid-template-columns: 1fr;
  }
  .section-header,
  .article-layout,
  .doc-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .feature-row {
    grid-template-columns: 56px 1fr;
  }
  .feature-detail {
    grid-column: 1 / -1;
  }
  .check-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 0;
    gap: 6px;
  }
  .main-nav {
    gap: 14px;
    width: 100%;
  }
  .main-nav a {
    font-size: 0.86rem;
    padding: 8px 0;
  }
  .hero {
    padding: 56px 0;
  }
  .section {
    padding: 56px 0;
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
  .data-cell {
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    padding: 24px 0;
  }
  .data-cell:last-child {
    border-bottom: none;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }
  .hero-actions .btn-primary {
    width: 100%;
  }
  .matrix-items,
  .check-buttons {
    grid-template-columns: 1fr;
  }
  .faq-item summary {
    grid-template-columns: 44px 1fr 24px;
    gap: 10px;
  }
  .faq-answer {
    padding: 0 0 24px 0;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-links {
    gap: 20px;
  }
}