:root {
  --paper: #faf8f4;
  --surface: #f3efe8;
  --ink: #262420;
  --muted: #77726b;
  --line: #dcd7cd;
  --pine: #2e5e4e;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); }

body {
  margin: 0;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; }
img { display: block; max-width: 100%; }

.shell {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 650;
}

.brand img { border-radius: 8px; }

.language {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.language button {
  border: 0;
  padding: 8px 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

html[data-language="ko"] [data-set-language="ko"],
html[data-language="en"] [data-set-language="en"] {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.lang-en { display: none !important; }
html[data-language="en"] .lang-ko { display: none !important; }
html[data-language="en"] .lang-en { display: revert !important; }

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr);
  gap: 8vw;
  align-items: center;
  padding-block: 88px;
}

.eyebrow,
.story-label {
  margin: 0 0 26px;
  color: var(--pine);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(45px, 6vw, 76px);
  line-height: 1.13;
  letter-spacing: -.055em;
  font-weight: 700;
}

.lead {
  margin: 34px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.6;
}

.hero-actions {
  margin-top: 42px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.primary-link {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  padding-inline: 24px;
  border-radius: 999px;
  background: var(--pine);
  color: white;
  text-decoration: none;
  font-weight: 650;
}

.availability { color: var(--muted); font-size: 14px; }

.product-shot {
  width: min(100%, 360px);
  justify-self: center;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 42px;
  background: #fff;
  box-shadow: 0 28px 80px rgba(38, 36, 32, .1);
  overflow: hidden;
}

.product-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 442 / 960;
  object-fit: cover;
  border-radius: 32px;
}

.product-visual {
  position: relative;
  width: min(100%, 460px);
  justify-self: center;
}

.signal-card {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  min-width: 148px;
  padding: 16px 18px;
  border: 1px solid rgba(46, 94, 78, .16);
  border-radius: 18px;
  background: rgba(255, 255, 255, .92);
  box-shadow: 0 18px 46px rgba(38, 36, 32, .12);
  backdrop-filter: blur(14px);
}

.signal-limit { top: 13%; left: -4%; }
.signal-local { right: -7%; bottom: 14%; flex-direction: row; align-items: center; gap: 10px; }
.signal-label { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.signal-card strong { font-size: 27px; line-height: 1.25; }
.signal-card strong small { color: var(--muted); font-size: 12px; font-weight: 500; }
.signal-local span:last-child { color: var(--muted); font-size: 12px; line-height: 1.45; }
.signal-local span:last-child strong { color: var(--ink); font-size: 13px; }
.signal-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--pine); box-shadow: 0 0 0 6px rgba(46, 94, 78, .1); }

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.principles article {
  min-height: 300px;
  padding: 32px 32px 48px 0;
}

.principles article + article {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.principles span { color: var(--pine); font: 600 13px ui-monospace, monospace; }
.principles h2 { margin: 68px 0 14px; font-size: 24px; letter-spacing: -.035em; }
.principles p { max-width: 280px; margin: 0; color: var(--muted); }

.features { padding-block: 144px 72px; }

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 8vw;
  align-items: end;
  margin-bottom: 64px;
}

.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: 0; }
.section-heading h2,
.purchase h2 {
  margin: 0;
  font-size: clamp(36px, 4.6vw, 58px);
  line-height: 1.16;
  letter-spacing: -.05em;
}
.section-heading > p:last-child { max-width: 440px; margin: 0 0 4px; color: var(--muted); font-size: 18px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 48px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  overflow: hidden;
}

.feature-card-wide {
  grid-column: 1 / -1;
  min-height: 490px;
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: center;
}

.feature-card-dark { background: var(--pine); color: #fff; border-color: var(--pine); }
.feature-copy > span { color: var(--pine); font: 700 11px ui-monospace, monospace; letter-spacing: .1em; }
.feature-card-dark .feature-copy > span { color: #c7dbd2; }
.feature-copy h3 { margin: 24px 0 18px; font-size: clamp(28px, 3vw, 40px); line-height: 1.22; letter-spacing: -.045em; }
.feature-copy p { max-width: 460px; margin: 0; color: var(--muted); }
.feature-card-dark .feature-copy p { color: rgba(255, 255, 255, .72); }

.feature-graphic {
  position: relative;
  min-height: 230px;
  border-radius: 22px;
  background: rgba(255, 255, 255, .72);
}

.limit-graphic { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; }
.limit-graphic > div { display: grid; align-content: center; justify-items: center; background: #fff; }
.limit-graphic span { color: var(--muted); font-size: 13px; }
.limit-graphic strong { font-size: 54px; line-height: 1.1; letter-spacing: -.06em; }
.limit-graphic small { color: var(--muted); }
.limit-graphic i { position: absolute; left: 12%; right: 12%; bottom: 18px; height: 3px; border-radius: 3px; background: var(--pine); }

.watch-graphic { display: grid; place-items: center; background: rgba(255, 255, 255, .08); }
.watch-face { width: 174px; height: 202px; display: grid; place-content: center; justify-items: center; border: 8px solid #1d1e1c; border-radius: 48px; background: #050505; box-shadow: 0 22px 44px rgba(0, 0, 0, .28); }
.watch-face span { color: #e97067; font-size: 22px; }
.watch-face strong { font-size: 56px; line-height: 1; letter-spacing: -.06em; }
.watch-face small { color: rgba(255, 255, 255, .56); font-size: 10px; letter-spacing: .16em; }
.watch-face i { width: 68px; height: 3px; margin-top: 16px; border-radius: 3px; background: #e97067; }
.watch-graphic > p { position: absolute; right: 18px; bottom: 12px; margin: 0; color: rgba(255, 255, 255, .58); font-size: 11px; }

.route-graphic { min-height: 340px; overflow: hidden; background: #e9e7df; }
.route-graphic svg { width: 100%; height: 100%; position: absolute; inset: 0; }
.route-graphic .road { fill: none; stroke: #fff; stroke-width: 16; stroke-linecap: round; opacity: .88; }
.route-graphic .loop { fill: rgba(46, 94, 78, .06); stroke: var(--pine); stroke-width: 7; stroke-linecap: round; stroke-dasharray: 12 10; }
.route-graphic circle { fill: var(--pine); stroke: #fff; stroke-width: 5; }
.route-chip { position: absolute; left: 22px; right: 22px; bottom: 20px; display: flex; justify-content: space-between; gap: 16px; padding: 16px 18px; border-radius: 14px; background: rgba(255, 255, 255, .92); box-shadow: 0 12px 30px rgba(38, 36, 32, .1); }
.route-chip span { color: var(--muted); font-size: 12px; }

.finish-graphic { display: grid; place-content: center; justify-items: center; text-align: center; background: #fff; }
.finish-check { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 50%; background: var(--pine); color: #fff; font-size: 25px; }
.finish-graphic > strong { font-size: 22px; }
.finish-graphic > div { display: flex; gap: 16px; margin-top: 22px; color: var(--muted); font: 12px ui-monospace, monospace; }

.privacy-graphic { display: flex; align-items: center; justify-content: center; gap: 42px; background: #fff; }
.shield { width: 90px; height: 104px; display: grid; place-items: center; clip-path: polygon(50% 0, 92% 15%, 88% 67%, 50% 100%, 12% 67%, 8% 15%); background: var(--pine); color: #fff; font-size: 44px; }
.privacy-graphic ul { margin: 0; padding: 0; list-style: none; color: var(--muted); }
.privacy-graphic li { padding: 7px 0; border-bottom: 1px solid var(--line); }

.purchase {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 9vw;
  align-items: center;
  margin-block: 72px 140px;
  padding: 72px;
  border-radius: 32px;
  background: var(--ink);
  color: #fff;
}
.purchase .eyebrow { color: #a9c8bb; }
.purchase > div > p:last-child { max-width: 510px; margin: 28px 0 0; color: rgba(255,255,255,.62); }
.price-card { padding: 34px; border: 1px solid rgba(255,255,255,.14); border-radius: 24px; background: rgba(255,255,255,.07); }
.price-card > span { display: block; color: #a9c8bb; font-size: 13px; }
.price-card strong { display: block; margin-top: 14px; font-size: clamp(44px, 5vw, 68px); line-height: 1.1; letter-spacing: -.06em; }
.price-card del { color: rgba(255,255,255,.38); font-size: 20px; }
.price-card small { display: block; margin-top: 30px; color: rgba(255,255,255,.48); }

.story {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 8vw;
  padding-block: 140px;
}

.story-copy { font-size: clamp(21px, 2.7vw, 34px); line-height: 1.55; letter-spacing: -.035em; }
.story-copy p { margin: 0 0 42px; }
.story-copy p:nth-child(2) { color: var(--muted); font-size: .67em; letter-spacing: -.02em; }

.closing {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-block: 64px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.closing p { margin: 0; }
.text-link { color: var(--pine); font-weight: 650; text-decoration: none; white-space: nowrap; }

.site-footer {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.site-footer div { display: flex; gap: 20px; }
.site-footer a { text-underline-offset: 3px; }

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 36px), var(--max)); }
  .site-header { min-height: 72px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 64px; padding-block: 64px 80px; }
  .product-visual { width: 100%; }
  .product-shot { width: min(66vw, 270px); margin-inline: auto; padding: 7px; border-radius: 34px; }
  .product-shot img { border-radius: 27px; }
  .signal-card { min-width: 126px; padding: 12px 14px; border-radius: 15px; }
  .signal-limit { left: 0; top: 15%; }
  .signal-local { right: 0; bottom: 12%; }
  .signal-card strong { font-size: 23px; }
  .principles { grid-template-columns: 1fr; }
  .principles article { min-height: auto; padding: 30px 0 38px; }
  .principles article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .principles h2 { margin-top: 40px; }
  .features { padding-block: 96px 48px; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; margin-bottom: 42px; }
  .section-heading .eyebrow { grid-column: auto; }
  .section-heading > p:last-child { font-size: 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card, .feature-card-wide { grid-column: auto; min-height: auto; display: flex; padding: 28px; border-radius: 22px; }
  .feature-card-wide { align-items: stretch; }
  .feature-copy h3 { font-size: 30px; }
  .feature-graphic { min-height: 220px; }
  .route-graphic { min-height: 280px; }
  .route-chip { flex-direction: column; gap: 2px; }
  .privacy-graphic { gap: 24px; }
  .purchase { grid-template-columns: 1fr; gap: 46px; margin-block: 48px 96px; padding: 34px 28px; border-radius: 24px; }
  .story { grid-template-columns: 1fr; gap: 24px; padding-block: 96px; }
  .closing, .site-footer { align-items: flex-start; flex-direction: column; padding-block: 36px; }
  .site-footer { justify-content: center; }
}

@media (max-width: 420px) {
  .signal-card { transform: scale(.9); }
  .signal-limit { transform-origin: left center; }
  .signal-local { transform-origin: right center; }
  .feature-card { padding: 24px; }
  .limit-graphic strong { font-size: 46px; }
}

@media (prefers-reduced-motion: no-preference) {
  .primary-link { transition: transform 160ms ease, background 160ms ease; }
  .primary-link:hover { transform: translateY(-2px); background: #24493d; }
}