/* ================= NEXO Brand Site ================= */
:root {
  --ink: #111113;
  --gray: #6e6e73;
  --faint: #a1a1a6;
  --line: #ececee;
  --bg: #ffffff;
  --accent: #0a0a0a;
  --max: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  word-break: keep-all;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.nav.is-solid {
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  box-shadow: 0 1px 0 var(--line);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  z-index: 2;
}
.nav-logo img { height: 22px; width: auto; }
.nav-links {
  display: flex;
  gap: 36px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray);
}
.nav-links a { transition: color 0.25s; }
.nav-links a:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-cta {
  font-size: 13px;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  transition: transform 0.25s var(--ease), background 0.25s;
}
.nav-cta:hover { background: #000; transform: scale(1.04); }

/* burger + mobile menu */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  padding: 0 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-burger i {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s var(--ease);
}
.nav-burger.is-open i:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-burger.is-open i:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: -1;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
  display: flex;
  align-items: center;
}
.mobile-menu.is-open {
  z-index: 1;
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 32px;
  width: 100%;
}
.mobile-menu a {
  font-size: clamp(2rem, 9vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-menu a:last-child { border-bottom: none; color: var(--gray); }

/* ---------- hero ---------- */
.hero { position: relative; height: 480vh; background: #000; }
.hero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}
#heroCanvas,
.hero-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-fallback { display: none; }
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,0.10), rgba(0,0,0,0) 30%, rgba(0,0,0,0) 62%, rgba(0,0,0,0.30));
  pointer-events: none;
}

.hero-copy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 24px;
  will-change: opacity, transform;
}
.hero-copy h1 {
  font-size: clamp(2.2rem, 5.6vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.18;
  color: var(--ink);
  text-shadow: 0 1px 24px rgba(255, 255, 255, 0.45);
}
.hero-copy h1 .line { display: block; }
.hero-copy h1 .accent { color: rgba(17, 17, 19, 0.55); }

.scroll-hint {
  margin-top: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(17, 17, 19, 0.55);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
}
.scroll-hint i {
  width: 1px;
  height: 44px;
  background: rgba(17, 17, 19, 0.25);
  overflow: hidden;
  position: relative;
  display: block;
}
.scroll-hint i::after {
  content: "";
  position: absolute;
  left: 0;
  top: -40%;
  width: 100%;
  height: 40%;
  background: rgba(17, 17, 19, 0.7);
  animation: hint-fall 1.8s ease-in-out infinite;
}
@keyframes hint-fall {
  0% { top: -40%; }
  100% { top: 110%; }
}

.hero-caption {
  position: absolute;
  left: 50%;
  bottom: 12vh;
  transform: translateX(-50%) translateY(16px);
  font-size: clamp(1.15rem, 2.2vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.45);
  opacity: 0;
  white-space: nowrap;
  will-change: opacity, transform;
}

.hero-dim {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 10, 0.62);
  opacity: 0;
  pointer-events: none;
  will-change: opacity;
}
.hero-end {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 24px;
  opacity: 0;
  will-change: opacity, transform;
}
.hero-end-eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-end h2 {
  font-size: clamp(1.9rem, 4.4vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.24;
  color: #fff;
}

/* ---------- shared section head ---------- */
section { background: var(--bg); }

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 18px;
}
.section-head h2 {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.16;
}

/* ---------- statement ---------- */
.statement {
  padding: clamp(120px, 18vw, 220px) 0;
  text-align: center;
}
.statement-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 600;
  color: var(--faint);
  letter-spacing: -0.01em;
  margin-bottom: 44px;
}
.statement-lines .reveal:nth-child(2) { transition-delay: 0.12s; }
.statement-lines .reveal:nth-child(3) { transition-delay: 0.24s; }
.statement-big {
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.14;
}
.statement-big em { font-style: normal; }
.statement-sub {
  margin-top: 40px;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 500;
  color: var(--gray);
}

/* ---------- spaces ---------- */
.spaces { padding: clamp(80px, 10vw, 140px) 0 0; }
.spaces .section-head { margin-bottom: clamp(56px, 8vw, 110px); }

.space-list {
  display: flex;
  flex-direction: column;
  gap: clamp(90px, 12vw, 170px);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px clamp(120px, 14vw, 200px);
}
.space figure {
  border-radius: 28px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #f2f2f4;
}
.space figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.4s var(--ease);
}
.space:hover figure img { transform: scale(1.06); }
.space-copy {
  max-width: 640px;
  margin-top: 36px;
}
.space-copy .eyebrow { margin-bottom: 12px; }
.space-copy h3 {
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 12px;
}
.space-copy p:last-child {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--gray);
  font-weight: 500;
}
.space:nth-child(even) .space-copy { margin-left: auto; text-align: right; }

/* ---------- why ---------- */
.why {
  background: #fafafa;
  padding: clamp(110px, 14vw, 190px) 0;
}
.why .section-head { margin-bottom: clamp(60px, 8vw, 100px); }

.value-list { list-style: none; }
.value-list li {
  display: flex;
  gap: clamp(24px, 6vw, 90px);
  align-items: baseline;
  padding: clamp(32px, 4vw, 48px) 0;
  border-top: 1px solid var(--line);
}
.value-list li:last-child { border-bottom: 1px solid var(--line); }
.value-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--faint);
  letter-spacing: 0.08em;
  min-width: 40px;
}
.value-list h3 {
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.value-list p {
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  color: var(--gray);
  font-weight: 500;
}

/* ---------- product ---------- */
.product { padding: clamp(110px, 14vw, 190px) 0; }
.product .section-head { margin-bottom: clamp(70px, 9vw, 120px); text-align: center; }

.product-row {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: clamp(28px, 5vw, 72px);
  flex-wrap: wrap;
}
.product-item {
  text-align: center;
  flex: 0 1 auto;
}
.display {
  width: calc(var(--w) * clamp(220px, 26vw, 340px));
  margin: 0 auto 28px;
}
.display-screen {
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  border: 3px solid #1c1c1e;
  background: linear-gradient(135deg, #fdfdfd 0%, #eef0f3 55%, #e3e6ea 100%);
  box-shadow: 0 20px 60px rgba(17, 17, 19, 0.10);
}
.display-stand {
  width: 34%;
  height: clamp(20px, 3vw, 34px);
  margin: 0 auto;
  background:
    linear-gradient(to right, transparent 44%, #2c2c2e 44%, #2c2c2e 56%, transparent 56%),
    linear-gradient(to top, #2c2c2e 4px, transparent 4px);
}
.product-item strong {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.product-item strong span { color: var(--faint); font-weight: 700; }
.product-item p {
  margin-top: 6px;
  font-size: 0.95rem;
  color: var(--gray);
  font-weight: 500;
}
.product-spec {
  margin-top: clamp(70px, 9vw, 110px);
  text-align: center;
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  font-weight: 600;
  color: var(--faint);
  letter-spacing: 0.01em;
}

/* ---------- cta ---------- */
.cta {
  background: var(--ink);
  color: #fff;
  padding: clamp(130px, 16vw, 220px) 0;
  text-align: center;
}
.cta h2 {
  font-size: clamp(2.2rem, 5.4vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.16;
}
.cta h2 em {
  font-style: normal;
  color: rgba(255, 255, 255, 0.6);
}
.cta-actions {
  margin-top: 56px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 16px 34px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s;
}
.btn:hover { transform: scale(1.05); }
.btn-primary { background: #fff; color: var(--ink); }
.btn-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }
.cta-note {
  margin-top: 36px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 500;
}

/* ---------- footer ---------- */
.footer {
  background: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo { height: 18px; width: auto; filter: brightness(0) invert(1); opacity: 0.8; }
.footer p { font-size: 13px; color: rgba(255, 255, 255, 0.4); font-weight: 500; }

/* ================= product page ================= */
.subpage { background: var(--bg); }

.p-hero {
  padding: clamp(140px, 16vw, 210px) 0 0;
  text-align: center;
}
.p-hero h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.14;
}
.p-hero .eyebrow { color: var(--gray); }
.p-hero-sub {
  margin-top: 28px;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 500;
  color: var(--gray);
}
.p-hero-visual {
  max-width: 1280px;
  margin: clamp(56px, 7vw, 100px) auto 0;
  padding: 0 24px;
}
.p-hero-visual img {
  width: 100%;
  border-radius: 24px;
}

/* key numbers */
.numbers { padding: clamp(90px, 11vw, 150px) 0; }
.number-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(40px, 5vw, 64px) 24px;
  text-align: center;
}
.number-grid strong {
  display: block;
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 12px;
}
.number-grid span {
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  font-weight: 600;
  color: var(--gray);
}

/* dark feature (Android) */
.feature-dark {
  background: var(--ink);
  color: #fff;
  padding: clamp(120px, 15vw, 200px) 0;
  text-align: center;
}
.feature-dark .eyebrow { color: rgba(255, 255, 255, 0.45); }
.feature-dark h2 {
  font-size: clamp(2.2rem, 5.2vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.16;
}
.feature-dark h2 em { font-style: normal; color: rgba(255, 255, 255, 0.55); }
.feature-copy {
  max-width: 560px;
  margin: 36px auto 0;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 500;
  line-height: 1.7;
  color: var(--gray);
}
.feature-dark .feature-copy { color: rgba(255, 255, 255, 0.72); }
.feature-dark .feature-copy.dim { color: rgba(255, 255, 255, 0.45); margin-top: 20px; }
.os-row {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 52px;
}
.os-row li {
  padding: 12px 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
}

/* light feature splits (sound / share) */
.feature-light { padding: clamp(110px, 13vw, 180px) 0; }
.feature-light.alt { background: #fafafa; }
.feature-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(48px, 7vw, 110px);
  align-items: center;
}
.feature-split h2 {
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.18;
}
.feature-split .feature-copy { margin: 28px 0 0; max-width: 520px; }
.mini-stats { list-style: none; display: flex; flex-direction: column; }
.mini-stats li {
  padding: clamp(24px, 3vw, 34px) 0;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}
.mini-stats li:last-child { border-bottom: 1px solid var(--line); }
.mini-stats strong {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.mini-stats span { font-size: 0.98rem; font-weight: 600; color: var(--gray); text-align: right; }

/* ota */
.ota { padding: clamp(120px, 15vw, 200px) 0; text-align: center; }
.ota h2 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.16;
}
.feature-copy.center { text-align: center; }

/* ports */
.ports { background: #fafafa; padding: clamp(110px, 13vw, 180px) 0; }
.ports .section-head { margin-bottom: clamp(56px, 7vw, 90px); }
.port-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.port-grid li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: clamp(24px, 3vw, 36px) clamp(18px, 2.4vw, 28px);
}
.port-grid strong {
  display: block;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.port-grid span { font-size: 0.9rem; font-weight: 600; color: var(--gray); }

/* spec table */
.spec { padding: clamp(110px, 13vw, 180px) 0; }
.spec .section-head { margin-bottom: clamp(48px, 6vw, 80px); }
.spec-table dl { display: flex; flex-direction: column; }
.spec-table dl > div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.spec-table dl > div:last-child { border-bottom: 1px solid var(--line); }
.spec-table dt { font-size: 0.95rem; font-weight: 700; color: var(--faint); }
.spec-table dd { font-size: 1rem; font-weight: 600; color: var(--ink); line-height: 1.6; }

/* assembly scrub */
.assembly { position: relative; height: 340vh; background: #0b0b0d; }
.assembly-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}
#assemblyCanvas,
.assembly-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.assembly-fallback { display: none; }
.assembly-intro,
.assembly-copy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  text-align: center;
  padding: 0 24px 10vh;
  pointer-events: none;
  will-change: opacity, transform;
}
.assembly-intro .eyebrow { color: rgba(255, 255, 255, 0.5); }
.assembly-intro h2,
.assembly-copy h2 {
  font-size: clamp(1.7rem, 3.8vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.24;
  color: #fff;
}
.assembly-hint {
  margin-top: 22px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.45);
}
.assembly-copy { opacity: 0; }

/* feature visuals */
.feature-visual {
  max-width: 1400px;
  margin: 0 auto clamp(56px, 7vw, 100px);
  padding: 0 24px;
}
.feature-visual img {
  width: 100%;
  border-radius: 28px;
}

/* port pictograms */
.port-grid svg {
  width: 30px;
  height: 30px;
  color: var(--faint);
  margin-bottom: 16px;
  display: block;
}

/* comparison */
.compare { background: #fafafa; padding: clamp(110px, 13vw, 180px) 0; }
.compare .section-head { margin-bottom: clamp(56px, 7vw, 90px); }
.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: stretch;
}
.compare-col { padding: clamp(28px, 3.4vw, 44px) 0 0; border-top: 2px solid var(--line); }
.compare-col.now { border-top-color: var(--ink); }
.compare-era {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 16px;
}
.compare-col.now .compare-era { color: var(--ink); }
.compare-col h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.compare-col.past h3 { color: var(--gray); }
.compare-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.compare-col li {
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--faint);
}
.compare-col.now li { color: var(--ink); font-weight: 600; }

/* size finder */
.finder { padding: clamp(110px, 13vw, 180px) 0; text-align: center; }
.finder .section-head { margin-bottom: clamp(48px, 6vw, 72px); }
.finder-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.finder-tab {
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 13px 26px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.finder-tab:hover { border-color: var(--faint); color: var(--ink); }
.finder-tab.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.finder-result { margin-top: clamp(48px, 6vw, 72px); }
.finder-size {
  font-size: clamp(5rem, 14vw, 11rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
}
.finder-size span { color: var(--faint); font-weight: 700; }
.finder-copy {
  margin-top: 24px;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 600;
  color: var(--ink);
}
.finder-note { margin-top: 12px; font-size: 0.95rem; font-weight: 500; color: var(--faint); }

/* onboarding steps */
.steps { background: #fafafa; padding: clamp(110px, 13vw, 180px) 0; }
.steps .section-head { margin-bottom: clamp(56px, 7vw, 90px); }
.step-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(32px, 5vw, 64px);
}
.step-list li { display: flex; flex-direction: column; gap: 20px; }
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-list h3 {
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.step-list p { font-size: 0.98rem; font-weight: 500; color: var(--gray); line-height: 1.65; }

/* product page link on main */
.product-more {
  margin-top: 44px;
  text-align: center;
}
.product-more a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 3px;
  transition: opacity 0.25s;
}
.product-more a:hover { opacity: 0.6; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .feature-split { grid-template-columns: 1fr; }
  .port-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-grid { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .space:nth-child(even) .space-copy { margin-left: 0; text-align: left; }
  .value-list li { flex-direction: column; gap: 12px; }
  .hero-caption { white-space: normal; text-align: center; width: 90%; }
  .number-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-table dl > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-hint i::after { animation: none; }
  .hero { height: auto; }
  .hero-sticky { position: relative; height: 100vh; }
  #heroCanvas { display: none; }
  .hero-fallback { display: block; }
  .hero-caption, .hero-end { display: none; }
  .hero-copy { opacity: 1 !important; }
  .assembly { height: auto; }
  .assembly-sticky { position: relative; height: 80vh; }
  #assemblyCanvas { display: none; }
  .assembly-fallback { display: block; }
  .assembly-copy { display: none; }
}