@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&display=swap');

/* =====================================================
   CSS 自定义属性
   ===================================================== */
:root {
  --c-primary: #6514ff;
  --c-accent: #bf00ff;
  --c-bg: #1c1726;
  --c-bg-2: #251e33;
  --c-bg-3: #2e2540;
  --c-text: #f0eaff;
  --c-text-muted: #b8a8d8;
  --c-border: #3d2f5c;
  --c-neon-primary: #8b3fff;
  --c-neon-accent: #d44eff;
  --c-white: #ffffff;
  --c-success: #00ffb3;
  --radius-card: 4px;
  --radius-btn: 4px;
  --gap-lg: 48px;
  --gap-md: 32px;
  --gap-sm: 16px;
  --header-h: 64px;
  --font: 'Atkinson Hyperlegible', system-ui, -apple-system, sans-serif;
  --transition: 200ms ease;
  --max-prose: 780px;
  --max-site: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font);
  background-color: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  font-size: 1rem;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

a:hover, a:focus-visible {
  color: var(--c-white);
  text-decoration: underline;
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--c-white);
}

hr {
  border: none;
  border-top: 2px solid var(--c-primary);
  margin: var(--gap-sm) 0 var(--gap-md);
  opacity: 0.8;
}

/* =====================================================
   Animated Background Pattern
   ===================================================== */
@keyframes patternDrift {
  0% { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

.site-wrapper {
  position: relative;
}

/* =====================================================
   Header
   ===================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  background: rgba(28, 23, 38, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-site);
  margin: 0 auto;
  padding: 0 var(--gap-md);
}

/* =====================================================
   Brand
   ===================================================== */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--c-white);
}

.brand:hover {
  text-decoration: none;
  color: var(--c-neon-accent);
}

.brand__mark {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.brand__text {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, var(--c-neon-primary), var(--c-neon-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand--footer .brand__text {
  font-size: 1.25rem;
}

/* =====================================================
   Hamburger
   ===================================================== */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 2px solid var(--c-primary);
  padding: 10px 12px;
  cursor: pointer;
  border-radius: var(--radius-btn);
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), background var(--transition);
}

.hamburger:hover {
  background: var(--c-primary);
}

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =====================================================
   Fullscreen Menu
   ===================================================== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 950;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(0.77, 0, 0.175, 1);
}

.fullscreen-menu[aria-hidden="false"] {
  transform: translateX(0);
}

.fullscreen-menu__close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: 2px solid var(--c-border);
  color: var(--c-text);
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}

.fullscreen-menu__close:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.fullscreen-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap-sm);
  width: 100%;
  padding: 0 var(--gap-md);
}

.nav-link {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-text);
  text-decoration: none;
  padding: 14px 32px;
  min-height: 52px;
  border: 2px solid transparent;
  border-radius: var(--radius-card);
  text-align: center;
  width: 100%;
  max-width: 480px;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  line-height: 1.3;
}

.nav-link:hover,
.nav-link--active {
  border-color: var(--c-primary);
  color: var(--c-white);
  background: rgba(101, 20, 255, 0.15);
  text-decoration: none;
}

/* =====================================================
   Sticky Anchors
   ===================================================== */
.sticky-anchors {
  position: sticky;
  top: var(--header-h);
  z-index: 800;
  background: var(--c-bg-2);
  border-bottom: 2px solid var(--c-primary);
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.sticky-anchors::-webkit-scrollbar {
  display: none;
}

.sticky-anchors a {
  display: block;
  padding: 0 20px;
  height: 44px;
  line-height: 44px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-text-muted);
  white-space: nowrap;
  text-decoration: none;
  border-right: 1px solid var(--c-border);
  transition: color var(--transition), background var(--transition);
}

.sticky-anchors a:hover {
  color: var(--c-white);
  background: rgba(101, 20, 255, 0.2);
  text-decoration: none;
}

.sticky-anchors a:last-child {
  border-right: none;
}

/* =====================================================
   Hero (Home)
   ===================================================== */
.hero--home {
  position: relative;
  min-height: 100vh;
  padding-top: var(--header-h);
  display: flex;
  align-items: stretch;
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-lg);
  align-items: center;
  max-width: var(--max-site);
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap-md);
  width: 100%;
  position: relative;
  z-index: 2;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  justify-content: center;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-neon-accent);
  border: 1px solid var(--c-accent);
  padding: 4px 12px;
  border-radius: 2px;
  align-self: flex-start;
}

.hero__h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, var(--c-neon-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: 1.125rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  gap: var(--gap-sm);
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero__media {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__img {
  width: 100%;
  max-width: 560px;
  border-radius: 8px;
  border: 2px solid var(--c-primary);
  box-shadow: 0 0 48px rgba(101, 20, 255, 0.4);
}

.hero__placeholder {
  width: 100%;
  max-width: 520px;
  aspect-ratio: 4/3;
  border-radius: 8px;
  border: 2px solid var(--c-primary);
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(101, 20, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(101, 20, 255, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: patternDrift 8s linear infinite;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .hero__bg-pattern {
    animation: none;
  }
}

/* =====================================================
   Page Banner (inner pages)
   ===================================================== */
.page-banner {
  position: relative;
  padding: calc(var(--header-h) + var(--gap-lg)) var(--gap-md) var(--gap-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-bg) 0%, var(--c-bg-3) 100%);
  border-bottom: 3px solid var(--c-primary);
}

.page-banner__inner {
  max-width: var(--max-site);
  margin: 0 auto;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-banner__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-neon-accent);
  border: 1px solid var(--c-accent);
  padding: 3px 10px;
  border-radius: 2px;
  align-self: flex-start;
}

.page-banner__h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
}

.page-banner__meta {
  display: flex;
  gap: var(--gap-sm);
  flex-wrap: wrap;
}

.page-banner__date {
  font-size: 0.875rem;
  color: var(--c-text-muted);
}

.page-banner__geo {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(191, 0, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(191, 0, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  animation: patternDrift 12s linear infinite;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-banner__geo {
    animation: none;
  }
}

.page-banner__media {
  position: absolute;
  right: var(--gap-md);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  max-width: 320px;
  opacity: 0.7;
}

.page-banner--ranking { border-bottom-color: var(--c-neon-primary); }
.page-banner--review { border-bottom-color: var(--c-neon-accent); }
.page-banner--compare { border-bottom-color: var(--c-success); }
.page-banner--faq { border-bottom-color: var(--c-primary); }
.page-banner--about { border-bottom-color: var(--c-neon-accent); }
.page-banner--privacy { border-bottom-color: var(--c-text-muted); }

/* =====================================================
   Main Layout
   ===================================================== */
.site-main {
  max-width: var(--max-site);
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap-md);
}

.page-article > div {
  margin-bottom: var(--gap-lg);
}

.content-with-aside {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--gap-lg);
  align-items: start;
}

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

/* =====================================================
   Aside
   ===================================================== */
.content-aside {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  position: sticky;
  top: calc(var(--header-h) + 56px);
}

.aside-block {
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--radius-card);
  padding: var(--gap-md);
}

.aside-block--contact {
  border-left-color: var(--c-accent);
}

.aside-block__title {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-neon-accent);
  margin-bottom: var(--gap-sm);
  text-transform: uppercase;
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-links li a {
  display: block;
  font-size: 0.9375rem;
  color: var(--c-text-muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--c-border);
  transition: color var(--transition), padding-left var(--transition);
}

.aside-links li:last-child a {
  border-bottom: none;
}

.aside-links li a:hover {
  color: var(--c-white);
  padding-left: 6px;
  text-decoration: none;
}

/* =====================================================
   Prose
   ===================================================== */
.prose {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-text);
  max-width: var(--max-prose);
}

.prose h2 {
  font-size: 1.5rem;
  margin: var(--gap-md) 0 var(--gap-sm);
  color: var(--c-white);
}

.prose h3 {
  font-size: 1.25rem;
  margin: var(--gap-sm) 0 8px;
  color: var(--c-neon-accent);
}

.prose p {
  margin-bottom: var(--gap-sm);
}

.prose ul, .prose ol {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: var(--gap-sm);
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 6px;
}

.prose a {
  color: var(--c-neon-accent);
  text-decoration: underline;
}

.prose strong {
  color: var(--c-white);
  font-weight: 700;
}

.prose blockquote {
  border-left: 3px solid var(--c-primary);
  padding-left: var(--gap-sm);
  color: var(--c-text-muted);
  margin: var(--gap-sm) 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--gap-sm);
}

.prose th {
  background: var(--c-bg-3);
  border: 1px solid var(--c-border);
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  color: var(--c-neon-accent);
}

.prose td {
  border: 1px solid var(--c-border);
  padding: 10px 14px;
}

.prose hr {
  margin: var(--gap-md) 0;
}

/* =====================================================
   Section Headings
   ===================================================== */
.ranking-section h2,
.review-section h2,
.related-section h2,
.content-section h2,
.rank-list-section h2 {
  font-size: clamp(1.375rem, 2.5vw, 2rem);
}

/* =====================================================
   Card Grid
   ===================================================== */
.card-grid {
  display: grid;
  gap: var(--gap-md);
}

.card-grid--4 {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.card {
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-bottom: 4px solid var(--c-primary);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-bottom-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.card:hover {
  border-bottom-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(101, 20, 255, 0.25);
}

.card--review {
  border-bottom-color: var(--c-neon-accent);
}

.card--sm .card__body {
  padding: var(--gap-sm);
}

.card__accent {
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
}

.card__body {
  padding: var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-neon-accent);
  text-transform: uppercase;
}

.card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  flex: 1;
}

.card__title a {
  color: var(--c-white);
  text-decoration: none;
  transition: color var(--transition);
}

.card__title a:hover {
  color: var(--c-neon-accent);
}

.card__desc {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__date {
  font-size: 0.8125rem;
  color: var(--c-text-muted);
}

.card__cta {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-neon-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--c-primary);
  padding-bottom: 2px;
  align-self: flex-start;
  transition: color var(--transition), border-color var(--transition);
}

.card__cta:hover {
  color: var(--c-neon-accent);
  border-color: var(--c-accent);
  text-decoration: none;
}

/* =====================================================
   Geo Pattern (placeholder)
   ===================================================== */
.geo-pattern {
  background:
    radial-gradient(circle at 25% 25%, rgba(101, 20, 255, 0.3) 0%, transparent 60%),
    radial-gradient(circle at 75% 75%, rgba(191, 0, 255, 0.2) 0%, transparent 60%),
    var(--c-bg-3);
}

/* =====================================================
   Rank List
   ===================================================== */
.rank-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.rank-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: var(--gap-sm);
  align-items: center;
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-left: 4px solid var(--c-primary);
  border-radius: var(--radius-card);
  padding: var(--gap-md);
  transition: border-left-color var(--transition), transform var(--transition);
}

.rank-item:hover {
  border-left-color: var(--c-accent);
  transform: translateX(4px);
}

.rank-item:nth-child(1) { border-left-color: #ffd700; }
.rank-item:nth-child(2) { border-left-color: #c0c0c0; }
.rank-item:nth-child(3) { border-left-color: #cd7f32; }

.rank-item__number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-primary);
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.rank-item:nth-child(1) .rank-item__number { color: #ffd700; opacity: 1; }
.rank-item:nth-child(2) .rank-item__number { color: #c0c0c0; opacity: 1; }
.rank-item:nth-child(3) .rank-item__number { color: #cd7f32; opacity: 1; }

.rank-item__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.rank-item__title {
  font-size: 1.0625rem;
  font-weight: 700;
}

.rank-item__title a {
  color: var(--c-white);
  text-decoration: none;
  transition: color var(--transition);
}

.rank-item__title a:hover {
  color: var(--c-neon-accent);
}

.rank-item__desc {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.5;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.rank-item__date {
  font-size: 0.8125rem;
  color: var(--c-text-muted);
}

.rank-item__cta {
  display: block;
  padding: 10px 20px;
  background: var(--c-primary);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-btn);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition);
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rank-item__cta:hover {
  background: var(--c-accent);
  color: var(--c-white);
  text-decoration: none;
}

/* =====================================================
   Compare Child List / FAQ List
   ===================================================== */
.compare-child-list,
.faq-list {
  margin-top: var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.compare-child-list dt,
.faq-list dt {
  font-size: 1.0625rem;
  font-weight: 700;
  padding: 12px 0 4px;
  border-top: 1px solid var(--c-border);
}

.compare-child-list dt a,
.faq-list dt a {
  color: var(--c-white);
  text-decoration: none;
  transition: color var(--transition);
}

.compare-child-list dt a:hover,
.faq-list dt a:hover {
  color: var(--c-neon-accent);
}

.compare-child-list dd,
.faq-list dd {
  font-size: 0.9375rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  padding-bottom: 8px;
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
  min-height: 48px;
  letter-spacing: 0.02em;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--c-primary);
  color: var(--c-white);
  border-color: var(--c-primary);
}

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

.btn--ghost {
  background: transparent;
  color: var(--c-neon-accent);
  border-color: var(--c-neon-accent);
}

.btn--ghost:hover {
  background: rgba(191, 0, 255, 0.15);
  color: var(--c-white);
  border-color: var(--c-white);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.875rem;
  min-height: 40px;
}

/* =====================================================
   Footer
   ===================================================== */
.site-footer {
  background: var(--c-bg-2);
  border-top: 3px solid var(--c-primary);
  margin-top: var(--gap-lg);
}

.footer-top {
  background: linear-gradient(135deg, var(--c-bg-3), var(--c-bg-2));
  border-bottom: 1px solid var(--c-border);
  padding: var(--gap-lg) var(--gap-md);
}

.footer-subscribe {
  max-width: var(--max-site);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  align-items: flex-start;
}

.footer-subscribe h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-neon-accent);
}

.footer-subscribe p {
  color: var(--c-text-muted);
  font-size: 0.9375rem;
}

.subscribe-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 480px;
}

.subscribe-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: 12px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-btn);
  color: var(--c-text);
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color var(--transition);
  min-height: 48px;
}

.subscribe-form input[type="email"]:focus {
  outline: none;
  border-color: var(--c-primary);
}

.subscribe-form input::placeholder {
  color: var(--c-text-muted);
}

.footer-main {
  max-width: var(--max-site);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 2fr 1fr 1fr;
  gap: var(--gap-lg);
  padding: var(--gap-lg) var(--gap-md);
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-neon-accent);
  text-transform: uppercase;
  margin-bottom: var(--gap-sm);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul a {
  color: var(--c-text-muted);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer-col ul a:hover {
  color: var(--c-white);
}

.footer-col--nav dl {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col--nav dt {
  font-weight: 700;
  font-size: 0.9rem;
}

.footer-col--nav dt a {
  color: var(--c-text-muted);
  transition: color var(--transition);
}

.footer-col--nav dt a:hover {
  color: var(--c-white);
}

.footer-col--nav dd {
  font-size: 0.8125rem;
  color: var(--c-border);
  line-height: 1.4;
  padding-left: 0;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.footer-about {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.65;
  margin-top: 8px;
}

.footer-bottom {
  border-top: 1px solid var(--c-border);
  padding: var(--gap-sm) var(--gap-md);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* =====================================================
   Scroll Reveal Animation
   ===================================================== */
@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal-item {
  animation: revealUp 0.4s ease both;
  animation-play-state: paused;
}

.reveal-item.is-visible {
  animation-play-state: running;
}

@media (prefers-reduced-motion: reduce) {
  .reveal-item {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

/* =====================================================
   Utility
   ===================================================== */
.empty-tip {
  color: var(--c-text-muted);
  font-style: italic;
  padding: var(--gap-md) 0;
}

/* =====================================================
   Responsive — Tablet (≤1024px)
   ===================================================== */
@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-md);
  }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }

  .hero__eyebrow {
    align-self: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__media {
    max-width: 460px;
    width: 100%;
  }

  .hero__placeholder {
    max-width: 400px;
  }
}

/* =====================================================
   Responsive — Mobile (≤768px)
   ===================================================== */
@media (max-width: 768px) {
  :root {
    --gap-lg: 40px;
    --gap-md: 24px;
  }

  .content-with-aside {
    grid-template-columns: 1fr;
  }

  .content-aside {
    position: static;
  }

  .card-grid--4 {
    grid-template-columns: 1fr 1fr;
  }

  .rank-item {
    grid-template-columns: 48px 1fr;
    grid-template-rows: auto auto;
  }

  .rank-item__cta {
    grid-column: 1 / -1;
    width: 100%;
  }

  .rank-item__number {
    font-size: 1.5rem;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--gap-md);
  }

  .subscribe-form {
    flex-direction: column;
  }

  .subscribe-form input[type="email"] {
    width: 100%;
  }

  .subscribe-form .btn {
    width: 100%;
  }

  .page-banner__media {
    display: none;
  }
}

/* =====================================================
   Responsive — Small Mobile (≤480px)
   ===================================================== */
@media (max-width: 480px) {
  :root {
    --gap-lg: 32px;
    --gap-md: 20px;
  }

  .header-inner {
    padding: 0 var(--gap-sm);
  }

  .site-main {
    padding: var(--gap-md) var(--gap-sm);
  }

  .card-grid--4 {
    grid-template-columns: 1fr;
  }

  .hero__h1 {
    font-size: 1.875rem;
  }

  .page-banner {
    padding-top: calc(var(--header-h) + var(--gap-md));
    padding-bottom: var(--gap-md);
    padding-left: var(--gap-sm);
    padding-right: var(--gap-sm);
  }

  .page-banner__h1 {
    font-size: 1.5rem;
  }

  .sticky-anchors a {
    padding: 0 14px;
    font-size: 0.8125rem;
  }

  .footer-top {
    padding: var(--gap-md) var(--gap-sm);
  }

  .footer-main {
    padding: var(--gap-md) var(--gap-sm);
  }

  .footer-bottom {
    padding: var(--gap-sm);
  }

  .btn {
    padding: 12px 20px;
    font-size: 0.9375rem;
  }
}