@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;500;600;700&display=swap');

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

:root {
  --col: 8px;
  --black: #000000;
  --white: #ffffff;
  --gray-100: #f5f5f5;
  --gray-200: #e8e8e8;
  --gray-400: #999999;
  --gray-600: #555555;
  --accent: #000000;
  --header-w: 240px;
  --content-max: 880px;
  --font-sans: 'Noto Sans JP', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-serif: 'Noto Serif JP', Georgia, serif;
  --fs-base: 17px;
  --lh-base: 1.75;
  --radius-card: 18px;
  --transition-fast: 0.18s ease;
  --transition-mid: 0.32s ease;
}

html {
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  font-family: var(--font-sans);
  color: var(--black);
  background: var(--white);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

a:hover {
  text-decoration: underline;
}

/* ===== Layout Shell ===== */
.site-shell {
  display: grid;
  grid-template-columns: var(--header-w) 1fr;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

/* ===== Left Fixed Header / Nav ===== */
.site-header {
  grid-column: 1;
  grid-row: 1 / 4;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--black);
  color: var(--white);
  padding: calc(var(--col) * 4) calc(var(--col) * 3);
  z-index: 100;
  overflow-y: auto;
  border-right: 1px solid #111;
}

.brand-block {
  margin-bottom: calc(var(--col) * 6);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  line-height: 1.3;
  display: block;
  writing-mode: horizontal-tb;
}

.brand-name:hover {
  text-decoration: none;
  opacity: 0.8;
}

.site-nav {
  display: flex;
  flex-direction: column;
  gap: calc(var(--col) * 0.5);
  flex: 1;
}

.nav-link {
  display: block;
  font-size: 0.78rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  padding: calc(var(--col) * 1.5) calc(var(--col) * 1.5);
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  letter-spacing: 0.02em;
  line-height: 1.4;
  min-height: 40px;
  align-items: center;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--white);
  border-left-color: var(--white);
  background: rgba(255,255,255,0.06);
  text-decoration: none;
}

.nav-cta {
  display: block;
  margin-top: calc(var(--col) * 4);
  padding: calc(var(--col) * 1.5) calc(var(--col) * 2);
  background: var(--white);
  color: var(--black);
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.06em;
  border: none;
  min-height: 40px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-cta:hover {
  background: var(--gray-200);
  text-decoration: none;
  color: var(--black);
}

/* ===== Main Content Area ===== */
.site-main {
  grid-column: 2;
  grid-row: 1 / 3;
  min-width: 0;
}

.wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: calc(var(--col) * 6) calc(var(--col) * 5);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 1);
  align-items: center;
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: calc(var(--col) * 5);
  letter-spacing: 0.03em;
}

.breadcrumb a {
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

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

/* ===== Hero Section (Home) ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  margin: 0 calc(var(--col) * -5);
  padding: 0 calc(var(--col) * 5);
  background: var(--black);
  color: var(--white);
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: -10%;
  width: 130%;
  height: 3px;
  background: var(--white);
  transform: skewX(-8deg);
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: calc(var(--col) * 12) 0;
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  margin-bottom: calc(var(--col) * 4);
}

.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: calc(var(--col) * 4);
}

.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

.hero-slash {
  width: 48px;
  height: 2px;
  background: rgba(255,255,255,0.4);
  margin: calc(var(--col) * 5) auto 0;
}

/* ===== Section Headers ===== */
.section-h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: calc(var(--col) * 2);
  margin-top: calc(var(--col) * 10);
}

.section-hr {
  border: none;
  border-top: 2px solid var(--black);
  margin-bottom: calc(var(--col) * 4);
}

/* ===== Featured Grid (Home) ===== */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--col) * 3);
}

.feat-card {
  display: flex;
  flex-direction: column;
  gap: calc(var(--col) * 1.5);
  padding: calc(var(--col) * 3.5);
  border: 1.5px solid var(--black);
  border-radius: var(--radius-card);
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
  color: var(--black);
}

.feat-card:hover {
  background: var(--black);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-2px);
}

.feat-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gray-400);
  text-transform: uppercase;
}

.feat-card:hover .feat-label {
  color: rgba(255,255,255,0.5);
}

.feat-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  display: block;
}

.feat-desc {
  font-size: 0.82rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.feat-card:hover .feat-desc {
  color: rgba(255,255,255,0.65);
}

/* ===== Child Table ===== */
.child-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin-top: calc(var(--col) * 2);
}

.child-table th {
  text-align: left;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: calc(var(--col) * 1.5) calc(var(--col) * 2);
  border-bottom: 2px solid var(--black);
  color: var(--gray-600);
}

.child-table td {
  padding: calc(var(--col) * 2) calc(var(--col) * 2);
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}

.child-row:hover td {
  background: var(--gray-100);
}

.child-num {
  font-family: 'Helvetica Neue', Helvetica, Arial, monospace;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--gray-400);
  white-space: nowrap;
  width: 3rem;
}

.child-title a {
  font-weight: 600;
  color: var(--black);
  transition: opacity var(--transition-fast);
}

.child-title a:hover {
  opacity: 0.6;
  text-decoration: none;
}

.child-desc {
  color: var(--gray-600);
  font-size: 0.82rem;
}

.child-date {
  font-size: 0.75rem;
  color: var(--gray-400);
  white-space: nowrap;
}

/* ===== Ranking Hero ===== */
.rank-hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: calc(var(--col) * 6);
  align-items: start;
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 6);
  border-bottom: 2px solid var(--black);
  margin-bottom: calc(var(--col) * 6);
}

.rank-hero-num {
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 700;
  color: var(--gray-200);
  line-height: 1;
  letter-spacing: -0.04em;
  user-select: none;
}

.rank-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: calc(var(--col) * 2);
}

.rank-desc {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: calc(var(--col) * 2);
}

.page-dates {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 2);
}

.page-date {
  font-size: 0.75rem;
  color: var(--gray-400);
  letter-spacing: 0.03em;
}

/* ===== Nav Grid (Related) ===== */
.nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--col) * 2);
}

.nav-card {
  display: flex;
  flex-direction: column;
  gap: calc(var(--col) * 1);
  padding: calc(var(--col) * 2.5) calc(var(--col) * 3);
  border: 1.5px solid var(--black);
  border-radius: var(--radius-card);
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--black);
}

.nav-card:hover {
  background: var(--gray-100);
  text-decoration: none;
}

.nav-card strong {
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.3;
}

.nav-card span {
  font-size: 0.75rem;
  color: var(--gray-600);
}

/* ===== Review Layout ===== */
.review-header {
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 5);
  border-bottom: 2px solid var(--black);
  margin-bottom: calc(var(--col) * 6);
}

.review-meta {
  display: flex;
  align-items: center;
  gap: calc(var(--col) * 3);
  margin-bottom: calc(var(--col) * 3);
  flex-wrap: wrap;
}

.review-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  border: 1.5px solid var(--black);
  padding: calc(var(--col) * 0.5) calc(var(--col) * 1.5);
  border-radius: 4px;
}

.review-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: calc(var(--col) * 2.5);
}

.review-deck {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: calc(var(--col) * 3);
}

.review-hero-media {
  margin-top: calc(var(--col) * 4);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.review-hero-img {
  width: 100%;
  height: auto;
}

.sib-grid {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 2);
}

.sib-link {
  padding: calc(var(--col) * 1.5) calc(var(--col) * 3);
  border: 1.5px solid var(--black);
  border-radius: 40px;
  font-size: 0.82rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.sib-link:hover {
  background: var(--black);
  color: var(--white);
  text-decoration: none;
}

.back-section {
  margin-top: calc(var(--col) * 8);
  padding-top: calc(var(--col) * 4);
  border-top: 1px solid var(--gray-200);
}

.back-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--black);
  text-decoration: none;
}

/* ===== Compare Layout ===== */
.compare-header {
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 5);
  margin-bottom: calc(var(--col) * 6);
}

.compare-label-row {
  display: flex;
  align-items: center;
  gap: calc(var(--col) * 3);
  margin-bottom: calc(var(--col) * 3);
  flex-wrap: wrap;
}

.compare-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  background: var(--black);
  color: var(--white);
  padding: calc(var(--col) * 0.75) calc(var(--col) * 1.5);
  border-radius: 4px;
}

.compare-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: calc(var(--col) * 2.5);
}

.compare-deck {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: calc(var(--col) * 4);
}

.compare-divider {
  display: flex;
  align-items: center;
  gap: calc(var(--col) * 2);
}

.compare-divider::before,
.compare-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--black);
}

.compare-divider span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gray-400);
}

/* ===== FAQ Layout ===== */
.faq-header {
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 5);
  border-bottom: 2px solid var(--black);
  margin-bottom: calc(var(--col) * 6);
}

.faq-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gray-400);
  border-bottom: 2px solid var(--gray-200);
  padding-bottom: calc(var(--col) * 0.5);
  margin-bottom: calc(var(--col) * 3);
}

.faq-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: calc(var(--col) * 2);
}

.faq-deck {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 600px;
  margin-bottom: calc(var(--col) * 3);
}

.faq-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 2);
}

.faq-nav-link {
  padding: calc(var(--col) * 1.5) calc(var(--col) * 2.5);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-card);
  font-size: 0.82rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.faq-nav-link:hover {
  border-color: var(--black);
  background: var(--gray-100);
  text-decoration: none;
}

/* ===== About Layout ===== */
.about-header {
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 5);
  margin-bottom: calc(var(--col) * 6);
}

.about-rule {
  width: 64px;
  height: 4px;
  background: var(--black);
  margin-bottom: calc(var(--col) * 4);
}

.about-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: calc(var(--col) * 3);
}

.about-deck {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 600px;
}

.about-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 2);
}

.about-link-card {
  padding: calc(var(--col) * 1.5) calc(var(--col) * 3);
  border: 1.5px solid var(--black);
  border-radius: var(--radius-card);
  font-size: 0.85rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.about-link-card:hover {
  background: var(--black);
  color: var(--white);
  text-decoration: none;
}

/* ===== Privacy Layout ===== */
.privacy-header {
  padding: calc(var(--col) * 8) 0 calc(var(--col) * 5);
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: calc(var(--col) * 6);
}

.privacy-h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: calc(var(--col) * 2);
}

.privacy-deck {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.75;
  max-width: 600px;
  margin-top: calc(var(--col) * 2);
}

.pfl-grid {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--col) * 2);
}

.pfl-link {
  padding: calc(var(--col) * 1.5) calc(var(--col) * 3);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-card);
  font-size: 0.82rem;
  transition: border-color var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.pfl-link:hover {
  border-color: var(--black);
  text-decoration: none;
}

/* ===== Prose (content area) ===== */
.content-section {
  margin: calc(var(--col) * 6) 0;
}

.prose {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--black);
  max-width: 720px;
}

.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin-top: calc(var(--col) * 8);
  margin-bottom: calc(var(--col) * 2);
  letter-spacing: 0.02em;
}

.prose h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: calc(var(--col) * 5);
  margin-bottom: calc(var(--col) * 1.5);
}

.prose p {
  margin-bottom: calc(var(--col) * 2.5);
}

.prose ul,
.prose ol {
  margin: calc(var(--col) * 2) 0 calc(var(--col) * 3) calc(var(--col) * 3);
}

.prose li {
  margin-bottom: calc(var(--col) * 1);
}

.prose a {
  color: var(--black);
  border-bottom: 1px solid var(--gray-400);
  transition: border-color var(--transition-fast);
}

.prose a:hover {
  border-color: var(--black);
  text-decoration: none;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--col) * 3) 0;
  font-size: 0.88rem;
}

.prose table th {
  text-align: left;
  font-weight: 700;
  padding: calc(var(--col) * 1.5) calc(var(--col) * 2);
  border-bottom: 2px solid var(--black);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.prose table td {
  padding: calc(var(--col) * 1.5) calc(var(--col) * 2);
  border-bottom: 1px solid var(--gray-200);
}

.prose blockquote {
  border-left: 3px solid var(--black);
  padding-left: calc(var(--col) * 3);
  color: var(--gray-600);
  font-style: italic;
  margin: calc(var(--col) * 3) 0;
}

/* ===== Footer ===== */
.site-footer {
  grid-column: 2;
  grid-row: 3;
  background: var(--black);
  color: var(--white);
  padding: calc(var(--col) * 8) calc(var(--col) * 8) calc(var(--col) * 5);
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: calc(var(--col) * 8);
  color: var(--white);
  opacity: 0.12;
  pointer-events: none;
  user-select: none;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--col) * 6);
  margin-bottom: calc(var(--col) * 8);
}

.footer-dl dt {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  margin-bottom: calc(var(--col) * 2);
}

.footer-dl dd {
  margin: 0 0 calc(var(--col) * 1.5);
}

.footer-dl dd a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.footer-dl dd a:hover {
  color: var(--white);
  text-decoration: none;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: calc(var(--col) * 4);
  border-top: 1px solid rgba(255,255,255,0.12);
  gap: calc(var(--col) * 3);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
}

.footer-links {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  display: flex;
  gap: calc(var(--col) * 2);
}

.footer-links a {
  color: rgba(255,255,255,0.45);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
  text-decoration: none;
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.48s ease, transform 0.48s ease;
}

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

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

/* ===== Index Section (home child table) ===== */
.index-section {
  margin-bottom: calc(var(--col) * 10);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  :root {
    --header-w: 0px;
  }

  .site-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .site-header {
    grid-column: 1;
    grid-row: 1;
    position: static;
    height: auto;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    padding: calc(var(--col) * 2) calc(var(--col) * 3);
    gap: calc(var(--col) * 2);
  }

  .brand-block {
    margin-bottom: 0;
  }

  .brand-name {
    font-size: 1rem;
  }

  .site-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: calc(var(--col) * 0.5);
    flex: 1;
    order: 3;
    width: 100%;
  }

  .nav-link {
    font-size: 0.75rem;
    padding: calc(var(--col) * 1.2) calc(var(--col) * 1.5);
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .nav-link:hover,
  .nav-link.is-active {
    border-left-color: transparent;
    border-bottom-color: var(--white);
    background: rgba(255,255,255,0.06);
  }

  .nav-cta {
    margin-top: 0;
    padding: calc(var(--col) * 1.2) calc(var(--col) * 2.5);
    font-size: 0.75rem;
    min-height: 40px;
  }

  .site-main {
    grid-column: 1;
    grid-row: 2;
  }

  .site-footer {
    grid-column: 1;
    grid-row: 3;
  }

  .wrap {
    padding: calc(var(--col) * 4) calc(var(--col) * 3);
  }

  .hero-section {
    min-height: 100vh;
    margin: 0;
    padding: 0 calc(var(--col) * 3);
  }

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

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

  .rank-hero {
    grid-template-columns: 1fr;
    gap: calc(var(--col) * 3);
    padding: calc(var(--col) * 5) 0 calc(var(--col) * 4);
  }

  .rank-hero-num {
    font-size: 3rem;
    display: none;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: calc(var(--col) * 5);
  }

  .footer-brand {
    font-size: 2.5rem;
    margin-bottom: calc(var(--col) * 5);
  }

  .site-footer {
    padding: calc(var(--col) * 6) calc(var(--col) * 3) calc(var(--col) * 4);
  }

  .child-table {
    font-size: 0.8rem;
  }

  .child-desc {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-h1 {
    font-size: 2rem;
  }

  .section-h2 {
    font-size: 1.2rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .compare-header,
  .review-header,
  .faq-header,
  .about-header,
  .privacy-header {
    padding: calc(var(--col) * 5) 0 calc(var(--col) * 3);
  }
}