:root {
  --bg: #F2F1EC;
  --bg-dark: #E8E7E0;
  --fg: #111111;
  --fg-muted: #777777;
  --accent: #111111;
  --accent-light: #EEEEEA;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ── */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 64px;
  border-bottom: 1px solid #D4D3CC;
}

.nav-brand {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--fg);
}

.nav-tag {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  border: 1px solid #D4D3CC;
  padding: 4px 10px;
  border-radius: 2px;
}

/* ── Hero ── */
.hero {
  position: relative;
  padding: 80px 64px 100px;
  border-bottom: 1px solid #D4D3CC;
}

.hero-grid-line {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: #D4D3CC;
}
.hero-grid-line--top { top: 100px; }
.hero-grid-line--bottom { bottom: 0; }

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-kicker {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(52px, 6vw, 88px);
  line-height: 0.95;
  color: var(--fg);
  margin-bottom: 36px;
  font-style: italic;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: #444444;
  max-width: 420px;
  margin-bottom: 40px;
  font-weight: 300;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
}

.hero-meta-sep {
  color: #CCCCCC;
}

/* Hero Product Frame */
.hero-product-frame {
  background: #111111;
  padding: 36px;
  color: #F2F1EC;
  border-radius: 2px;
}

.hero-product-label {
  font-size: 10px;
  letter-spacing: 0.25em;
  color: #888888;
  margin-bottom: 6px;
}

.hero-product-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-style: italic;
  margin-bottom: 32px;
}

.hero-product-visual {
  margin-bottom: 28px;
}

.captcha-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.captcha-cell {
  aspect-ratio: 1;
  background: #2A2A2A;
  border-radius: 2px;
}

.captcha-cell--light {
  background: #3A3A3A;
  border: 1px solid #555555;
}

.hero-product-desc {
  font-size: 11px;
  color: #888888;
  line-height: 1.5;
  border-top: 1px solid #333333;
  padding-top: 16px;
  font-style: italic;
}

/* ── Product Grid ── */
.product-grid {
  padding: 80px 64px;
  border-bottom: 1px solid #D4D3CC;
}

.product-grid-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 48px;
}

.product-grid-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg);
  font-weight: 500;
}

.product-grid-sub {
  font-size: 14px;
  color: var(--fg-muted);
}

.products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: #D4D3CC;
  border: 1px solid #D4D3CC;
}

.product-card {
  background: var(--bg);
  padding: 28px 24px;
  transition: background 0.15s;
}

.product-card:hover {
  background: var(--accent-light);
}

.product-code {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--fg-muted);
  margin-bottom: 10px;
}

.product-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-style: italic;
  line-height: 1.3;
  margin-bottom: 12px;
}

.product-tier {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.product-material {
  font-size: 12px;
  color: #AAAAAA;
}

/* ── Features ── */
.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid #D4D3CC;
}

.features-col {
  padding: 80px 64px;
}

.features-col:first-child {
  border-right: 1px solid #D4D3CC;
}

.feature-item {
  margin-bottom: 56px;
}

.feature-item:last-child {
  margin-bottom: 0;
}

.feature-tag {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--fg-muted);
  margin-bottom: 14px;
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-style: italic;
  margin-bottom: 14px;
  line-height: 1.2;
}

.feature-body {
  font-size: 15px;
  color: #555555;
  line-height: 1.7;
  font-weight: 300;
}

/* ── Manifesto ── */
.manifesto {
  padding: 100px 64px;
  border-bottom: 1px solid #D4D3CC;
}

.manifesto-inner {
  max-width: 640px;
}

.manifesto-text {
  font-size: 20px;
  line-height: 1.7;
  color: #444444;
  font-weight: 300;
  margin-bottom: 36px;
}

.manifesto-text:last-child {
  margin-bottom: 0;
}

.manifesto-text--loud {
  font-family: var(--font-serif);
  font-size: 32px;
  font-style: italic;
  color: var(--fg);
  line-height: 1.25;
}

/* ── Closing ── */
.closing {
  padding: 80px 64px;
  border-bottom: 1px solid #D4D3CC;
}

.closing-text {
  font-family: var(--font-serif);
  font-size: clamp(48px, 8vw, 120px);
  font-style: italic;
  color: var(--fg);
  line-height: 1;
  letter-spacing: -0.02em;
}

/* ── Footer ── */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 64px;
}

.footer-left {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.footer-brand {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
}

.footer-slug {
  font-size: 12px;
  color: var(--fg-muted);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--fg-muted);
}

.footer-sep {
  color: #CCCCCC;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .nav { padding: 20px 28px; }
  .hero { padding: 60px 28px 80px; }
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .hero-right { order: -1; }
  .product-grid { padding: 60px 28px; }
  .products { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: 1fr; }
  .features-col { padding: 60px 28px; }
  .features-col:first-child { border-right: none; border-bottom: 1px solid #D4D3CC; }
  .manifesto { padding: 60px 28px; }
  .closing { padding: 60px 28px; }
  .footer { padding: 24px 28px; flex-direction: column; gap: 12px; align-items: flex-start; }
}

@media (max-width: 600px) {
  .products { grid-template-columns: 1fr; }
  .product-grid-header { flex-direction: column; gap: 8px; }
  .hero-meta { flex-wrap: wrap; }
}