:root {
  --blue: #1f55a5;
  --sky: #42a7df;
  --ink: #151515;
  --muted: #777;
  --paper: #f1f1f1;
  --shell: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: #fff;
  color: var(--ink);
  font-family: "Noto Sans KR", "Malgun Gothic", Arial, sans-serif;
  line-height: 1.55;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { color: inherit; font: inherit; }
.skip-link { position: fixed; top: -80px; left: 12px; z-index: 1000; padding: 10px 14px; background: #111; color: #fff; }
.skip-link:focus { top: 12px; }
.eyebrow { margin: 0 0 13px; color: #8a8a8a; font-size: 13px; letter-spacing: .16em; }

.site-header {
  position: relative;
  z-index: 50;
  height: 100px;
  display: grid;
  grid-template-columns: 230px 1fr 210px;
  align-items: center;
  gap: 42px;
  padding: 0 20px;
  background: #fff;
}
.brand { display: block; width: 200px; }
.desktop-nav { display: flex; align-items: center; justify-content: center; gap: clamp(22px, 2.3vw, 44px); font-size: 15px; white-space: nowrap; }
.desktop-nav a { position: relative; padding: 14px 0; }
.desktop-nav a::after { content: ""; position: absolute; right: 50%; bottom: 7px; left: 50%; height: 2px; background: var(--blue); transition: .2s ease; }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { right: 0; left: 0; }
.account-links { display: flex; align-items: center; justify-content: flex-end; gap: 14px; }
.office-link { min-width: 140px; padding: 12px 20px; border-radius: 999px; background: var(--blue); color: #fff; text-align: center; font-size: 14px; }
.login-link { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: #050505; color: #fff; font-size: 23px; }
.menu-button, .mobile-menu { display: none; }

.hero { position: relative; width: 100%; overflow: hidden; background: #f2f5f8; }
.hero-track { position: relative; aspect-ratio: 1920 / 980; min-height: 560px; }
.hero-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .75s ease; }
.hero-slide.is-active { opacity: 1; pointer-events: auto; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-dots { position: absolute; right: 0; bottom: 26px; left: 0; display: flex; justify-content: center; gap: 9px; }
.hero-dots button { width: 8px; height: 8px; padding: 0; border: 0; border-radius: 50%; background: #d7d7d7; cursor: pointer; transition: .2s ease; }
.hero-dots button.is-active { background: var(--sky); transform: scale(1.25); }

.best-product { position: relative; width: min(calc(100% - 80px), var(--shell)); min-height: 370px; margin: -18px auto 0; padding: 78px 80px; overflow: hidden; border-radius: 46px; background: #202020; color: #fff; }
.best-copy h1 { margin: 0; font-size: clamp(42px, 5vw, 72px); font-weight: 400; letter-spacing: -.04em; line-height: 1; }
.best-copy > p:not(.eyebrow) { margin: 20px 0 28px; color: #d4d4d4; font-size: 18px; }
.outline-button { display: inline-flex; align-items: center; gap: 16px; padding: 12px 23px; border: 1px solid rgba(255,255,255,.65); border-radius: 999px; font-size: 14px; }
.outline-button:hover, .outline-button:focus-visible { background: #fff; color: #111; }
.orbit-mark { position: absolute; right: 8%; bottom: -125px; width: 310px; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; }
.orbit-mark::before, .orbit-mark::after { content: ""; position: absolute; inset: 42px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; }
.orbit-mark::after { inset: 92px; }
.orbit-mark span { position: absolute; inset: 0; display: grid; place-items: center; color: rgba(255,255,255,.75); font-size: 60px; font-weight: 200; }

.promotion { margin-top: -46px; padding: 150px 0 125px; background: #121212 url("/assets/promotion-bg.png") center/cover; color: #fff; }
.section-shell { width: min(calc(100% - 80px), var(--shell)); margin: 0 auto; }
.promotion-heading { margin-bottom: 52px; }
.promotion-heading > p:first-child { margin: 0 0 8px; font-size: clamp(28px, 3vw, 44px); }
.promotion-heading h2 { margin: 0; color: #e7e7e7; font-size: clamp(24px, 3vw, 38px); font-weight: 400; }
.promotion-heading > p:last-child { margin: 14px 0 0; color: #bdbdbd; font-size: 16px; }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.product-card { min-width: 0; overflow: hidden; border-radius: 24px; background: rgba(255,255,255,.82); color: #111; transition: transform .2s ease; }
.product-card:hover { transform: translateY(-5px); }
.product-card a { display: flex; min-height: 100%; flex-direction: column; padding: 20px; }
.product-image { overflow: hidden; border-radius: 17px; background: #d6d6d6; }
.product-image img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.product-card h3 { margin: 20px 0 7px; font-size: 16px; font-weight: 600; }
.product-card p { margin: auto 0 0; color: #555; font-size: 12px; }

.company { position: relative; min-height: 730px; display: grid; place-items: start center; overflow: hidden; padding: 105px 24px; background: #eee url("/assets/company-orbit.png") center 45%/min(920px, 92vw) auto no-repeat; text-align: center; }
.company-copy { position: relative; z-index: 2; }
.company h2 { margin: 0 0 15px; font-size: clamp(34px, 4vw, 58px); font-weight: 400; letter-spacing: -.04em; }
.company-copy > p:not(.eyebrow) { margin: 5px 0; color: #777; font-size: 19px; }
.light-button { display: inline-flex; gap: 12px; margin-top: 27px; padding: 13px 26px; border-radius: 999px; background: rgba(255,255,255,.9); box-shadow: 0 8px 25px rgba(0,0,0,.05); font-size: 13px; }
.company-word { position: absolute; top: 46%; margin: 0; color: rgba(255,255,255,.7); font-size: clamp(42px, 8vw, 122px); font-weight: 700; letter-spacing: -.05em; }

.values { min-height: 720px; display: grid; grid-template-columns: 1fr 1fr; background: #202020; color: #fff; }
.values-copy { align-self: center; max-width: 600px; padding: 85px clamp(40px, 7vw, 120px); }
.values-copy h2 { margin: 0; font-size: clamp(30px, 3vw, 47px); font-weight: 400; }
.values-copy h2 span { color: #fff; border-bottom: 2px solid var(--sky); }
.values-nav { margin: 10px 0 60px; color: #555; font-size: clamp(26px, 2.4vw, 40px); line-height: 1.45; }
.values-lead { color: #ddd; font-size: 17px; }
.values-copy > p:last-of-type { color: #bcbcbc; font-size: 15px; line-height: 2; }
.values-copy > a { display: inline-block; margin-top: 24px; color: #83c9ee; font-size: 13px; }
.values > img { width: 100%; height: 100%; object-fit: cover; }

.media-band { padding: 110px max(30px, calc((100% - var(--shell)) / 2)); background: #f0f0f0; }
.media-band h2 { margin: 0; font-size: clamp(38px, 5vw, 72px); font-weight: 400; letter-spacing: -.045em; }
.media-band > p:not(.eyebrow) { margin: 17px 0 27px; color: #666; }
.outline-button.dark { border-color: #333; }
.outline-button.dark:hover, .outline-button.dark:focus-visible { background: #111; color: #fff; }

.backup-note { width: min(calc(100% - 80px), var(--shell)); margin: 60px auto; padding: 20px 23px; display: flex; align-items: baseline; gap: 24px; border: 1px solid #d7d7d7; color: #666; font-size: 12px; }
.backup-note b { flex: none; color: #222; letter-spacing: .08em; }
.backup-note p { margin: 0; }
.backup-note a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }

.site-footer { padding: 80px 0 70px; background: #050505; color: #fff; }
.footer-shell { width: min(calc(100% - 80px), var(--shell)); margin: 0 auto; }
.footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 50px; }
.footer-brand { width: 210px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 15px 28px; color: #d0d0d0; font-size: 12px; }
.business-info { max-width: 850px; margin-top: 42px; display: grid; grid-template-columns: max-content max-content; gap: 7px 35px; color: #cfcfcf; font-size: 13px; }
.business-info p { margin: 0; }
.business-info p:nth-child(3) { grid-column: 1 / -1; }
.business-info b { color: #fff; }
.footer-note { margin: 36px 0 0; padding-top: 22px; border-top: 1px solid #2d2d2d; color: #858585; font-size: 11px; }
.copyright { margin: 10px 0 0; color: #666; font-size: 11px; }

@media (max-width: 1120px) {
  .site-header { grid-template-columns: 190px 1fr 160px; gap: 20px; }
  .brand { width: 175px; }
  .desktop-nav { gap: 20px; font-size: 13px; }
  .office-link { min-width: 110px; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .values { grid-template-columns: 1fr; }
  .values-copy { max-width: 780px; }
  .values > img { max-height: 680px; }
}

@media (max-width: 767px) {
  body { font-size: 13px; }
  .site-header { height: 70px; grid-template-columns: 1fr 48px; padding: 0 15px; }
  .brand { width: 174px; }
  .desktop-nav, .account-links { display: none; }
  .menu-button { width: 48px; height: 48px; display: grid; align-content: center; justify-content: end; gap: 6px; padding: 0; border: 0; background: transparent; cursor: pointer; }
  .menu-button span { width: 22px; height: 2px; background: #111; }
  .mobile-menu { position: fixed; inset: 0 0 0 auto; z-index: 100; width: min(84vw, 340px); padding: 22px; background: #fff; box-shadow: -12px 0 40px rgba(0,0,0,.18); }
  .mobile-menu[hidden] { display: none; }
  .mobile-menu:not([hidden]) { display: block; }
  .mobile-menu-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 15px; border-bottom: 1px solid #ddd; }
  .mobile-menu-head button { width: 40px; height: 40px; border: 0; background: transparent; font-size: 30px; }
  .mobile-menu > a { display: block; padding: 15px 2px; border-bottom: 1px solid #eee; }

  .hero-track { min-height: 505px; aspect-ratio: auto; }
  .hero-slide img { object-fit: cover; }
  .hero-water img { object-position: 58% center; }
  .hero-oxygen img { object-position: 70% center; }
  .hero-epiderm img { object-position: 62% center; }
  .hero-dots { bottom: 24px; gap: 11px; }
  .hero-dots button { width: 7px; height: 7px; }

  .best-product { width: 100%; min-height: 325px; margin: 0; padding: 58px 15px 70px; border-radius: 46px 46px 0 0; }
  .best-copy h1 { font-size: 34px; }
  .best-copy > p:not(.eyebrow) { margin: 12px 0 22px; font-size: 15px; }
  .orbit-mark { right: -85px; bottom: -120px; width: 280px; }

  .promotion { margin-top: 0; padding: 70px 14px 72px; background-position: center top; }
  .section-shell { width: 100%; }
  .promotion-heading { margin-bottom: 35px; }
  .promotion-heading > p:first-child { font-size: 30px; }
  .promotion-heading h2 { font-size: 24px; }
  .promotion-heading > p:last-child { font-size: 14px; line-height: 1.45; }
  .product-grid { grid-template-columns: 1fr; gap: 12px; }
  .product-card { border-radius: 18px; }
  .product-card a { padding: 20px; }
  .product-image { width: min(72vw, 280px); margin: 0 auto; }
  .product-card h3 { margin-top: 18px; font-size: 15px; }

  .company { min-height: 700px; padding: 72px 22px; background-size: 650px auto; background-position: center 60%; }
  .company h2 { font-size: 34px; }
  .company-copy > p:not(.eyebrow) { font-size: 16px; }
  .company-word { top: 52%; font-size: 48px; }

  .values { min-height: 0; }
  .values-copy { padding: 65px 15px 50px; }
  .values-copy h2 { font-size: 29px; }
  .values-nav { margin: 9px 0 45px; font-size: 25px; }
  .values-copy > p:last-of-type { font-size: 14px; line-height: 1.9; }
  .values > img { height: auto; aspect-ratio: 1; }

  .media-band { padding: 70px 15px; }
  .media-band h2 { font-size: 38px; line-height: 1.15; }
  .backup-note { width: calc(100% - 30px); margin: 34px auto; display: block; padding: 17px; }
  .backup-note p { margin-top: 8px; }

  .site-footer { padding: 52px 15px 48px; }
  .footer-shell { width: 100%; }
  .footer-top { display: block; }
  .footer-brand { width: 180px; }
  .footer-links { margin-top: 30px; justify-content: flex-start; gap: 12px 20px; font-size: 11px; }
  .business-info { margin-top: 35px; display: block; font-size: 12px; line-height: 1.65; }
  .business-info p { margin-bottom: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-slide, .product-card { transition: none; }
}