:root {
  --black: #0f0f0f;
  --white: #fafaf8;
  --lime: #b5ff00;
  --grey-1: #1a1a1a;
  --grey-2: #2a2a2a;
  --grey-3: #888;
  --grey-4: #ccc;
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  padding: 20px 40px;
  border-bottom: 1px solid var(--grey-2);
}
.nav-inner {
  display: flex;
  align-items: baseline;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.1em;
  color: var(--lime);
}
.nav-tagline {
  font-size: 13px;
  color: var(--grey-3);
  font-weight: 400;
}
.nav-buy {
  margin-left: auto;
  background: var(--lime);
  color: var(--black);
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 8px 20px;
  text-decoration: none;
  transition: opacity 0.2s;
}
.nav-buy:hover { opacity: 0.85; }

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 85vh;
  border-bottom: 1px solid var(--grey-2);
}
.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 60px 80px 40px;
}
.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--lime);
  margin-bottom: 24px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(64px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  color: var(--white);
  margin-bottom: 32px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.65;
  color: var(--grey-3);
  max-width: 420px;
  font-weight: 300;
  margin-bottom: 32px;
}
.hero-cta {
  display: inline-block;
  background: var(--lime);
  color: var(--black);
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.1em;
  padding: 14px 28px;
  text-decoration: none;
  text-align: center;
  transition: opacity 0.2s;
  width: fit-content;
}
.hero-cta:hover { opacity: 0.85; }
.hero-right {
  background: var(--grey-1);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  position: relative;
}
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}
.hero-visual-label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--grey-3);
  text-align: center;
}
.hero-visual-block {
  aspect-ratio: 3/4;
  background: var(--grey-2);
  border: 1px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.hero-visual-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 8px,
    rgba(181, 255, 0, 0.04) 8px,
    rgba(181, 255, 0, 0.04) 9px
  );
}
.sock-placeholder {
  width: 60px;
  height: 120px;
  border: 2px solid var(--lime);
  display: flex;
  align-items: center;
  justify-content: center;
}
.sock-text {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--lime);
  writing-mode: vertical-rl;
}
.hero-visual-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--grey-3);
}

/* PROOF */
.proof {
  padding: 60px 40px;
  border-bottom: 1px solid var(--grey-2);
}
.proof-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  align-items: center;
}
.proof-stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 40px;
}
.proof-stat:first-child { padding-left: 0; }
.proof-number {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--lime);
  line-height: 1;
}
.proof-label {
  font-size: 13px;
  color: var(--grey-3);
  line-height: 1.5;
  font-weight: 300;
}
.proof-divider {
  width: 1px;
  height: 60px;
  background: var(--grey-2);
  flex-shrink: 0;
}

/* PRODUCT */
.product {
  padding: 100px 40px;
  border-bottom: 1px solid var(--grey-2);
}
.product-header {
  max-width: 1200px;
  margin: 0 auto 60px;
}
.section-label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--lime);
  display: block;
  margin-bottom: 16px;
}
.product-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 5vw, 72px);
  line-height: 0.95;
}
.product-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.product-card {
  background: var(--grey-1);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.product-card-visual {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-1 { background: #1a1a12; }
.card-2 { background: #1a1212; }
.card-3 { background: #12121a; }
.product-visual-inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 60%;
}
.pvi-line {
  height: 2px;
  background: var(--lime);
  opacity: 0.6;
}
.pvi-line--short { width: 60%; }
.product-card-name {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.05em;
}
.product-card-desc {
  font-size: 14px;
  color: var(--grey-3);
  line-height: 1.6;
  font-weight: 300;
  flex: 1;
}
.product-card-price {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--lime);
}
.product-note {
  max-width: 1200px;
  margin: 40px auto 0;
  font-size: 13px;
  color: var(--grey-3);
  font-weight: 300;
}

/* PHILOSOPHY */
.philosophy {
  padding: 100px 40px;
  border-bottom: 1px solid var(--grey-2);
}
.philosophy-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 80px;
}
.philosophy-body {
  display: flex;
  flex-direction: column;
  gap: 60px;
}
.philosophy-quote {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  color: var(--white);
  border-left: 3px solid var(--lime);
  padding-left: 32px;
}
.philosophy-points {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.philosophy-point {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.point-marker {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--lime);
  letter-spacing: 0.1em;
  flex-shrink: 0;
  padding-top: 2px;
}
.philosophy-point p {
  font-size: 15px;
  color: var(--grey-3);
  line-height: 1.65;
  font-weight: 300;
}

/* CLOSING */
.closing {
  padding: 120px 40px;
  border-bottom: 1px solid var(--grey-2);
}
.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.closing-line {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1;
  color: var(--grey-3);
}
.closing-line--accent {
  color: var(--lime);
}

/* FOOTER */
.footer {
  padding: 40px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--lime);
}
.footer-sub {
  font-size: 12px;
  color: var(--grey-3);
}
.footer-meta {
  display: flex;
  gap: 24px;
  font-size: 12px;
  color: var(--grey-3);
}

/* MOBILE */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-left { padding: 60px 20px; }
  .hero-right { padding: 40px 20px; min-height: 300px; }
  .hero-visual-block { aspect-ratio: 4/3; }
  .proof { padding: 40px 20px; }
  .proof-inner { flex-direction: column; gap: 32px; }
  .proof-stat { padding: 0; }
  .proof-divider { width: 40px; height: 1px; }
  .product { padding: 60px 20px; }
  .product-grid { grid-template-columns: 1fr; gap: 2px; }
  .philosophy { padding: 60px 20px; }
  .philosophy-inner { grid-template-columns: 1fr; gap: 40px; }
  .philosophy-quote { font-size: 24px; }
  .closing { padding: 80px 20px; }
  .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
}