:root {
  color-scheme: dark;
  --bg: #07171b;
  --bg-deep: #02090b;
  --surface: #0e2328;
  --surface-soft: #122c31;
  --line: rgba(182, 224, 224, .14);
  --text: #f4f7f6;
  --muted: #9dafb1;
  --teal: #55d6cb;
  --teal-deep: #087f78;
  --gold: #e5c15a;
  --gold-soft: #f5df9a;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Apple SD Gothic Neo", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: -80px; padding: 12px 18px; border-radius: 8px; background: var(--teal); color: #041213; font-weight: 800; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  background: rgba(3, 15, 18, .76);
  backdrop-filter: blur(20px);
}
.header-inner { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 850; font-size: 20px; letter-spacing: -.04em; }
.brand img, .footer-brand img { border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.28); }
nav { display: flex; align-items: center; gap: 30px; color: #c2cecf; font-size: 14px; font-weight: 700; }
nav a { transition: color .2s ease; }
nav a:hover { color: #fff; }
.nav-download { padding: 9px 17px; border: 1px solid rgba(85,214,203,.44); border-radius: 999px; color: var(--teal); }

.hero { position: relative; overflow: hidden; padding: 176px 0 0; background: radial-gradient(circle at 72% 34%, rgba(17,124,119,.18), transparent 34%), linear-gradient(180deg, #06191d 0%, #07171b 78%); }
.hero-grid { position: relative; z-index: 2; min-height: 700px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 72px; }
.hero-copy { padding-bottom: 78px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--teal); font-size: 12px; font-weight: 850; letter-spacing: .14em; }
.eyebrow span { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 16px var(--teal); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin: 25px 0 26px; font-size: clamp(54px, 6vw, 80px); line-height: 1.06; letter-spacing: -.065em; font-weight: 900; }
h1 em { color: var(--gold-soft); font-style: normal; }
.hero-description { max-width: 590px; margin-bottom: 34px; color: #b7c5c6; font-size: 18px; line-height: 1.75; letter-spacing: -.025em; }
.hero-highlights { max-width: 590px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: -8px 0 26px; }
.hero-highlights a { display: flex; flex-direction: column; gap: 3px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 14px; background: rgba(18,44,49,.62); transition: border-color .2s ease, background .2s ease; }
.hero-highlights a:hover { border-color: rgba(85,214,203,.48); background: rgba(18,55,59,.8); }
.hero-highlights strong { color: #edf4f3; font-size: 13px; }
.hero-highlights span { color: #7f9698; font-size: 11px; }
.store-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.store-button { min-width: 188px; height: 62px; display: flex; align-items: center; gap: 13px; padding: 10px 20px; border: 1px solid rgba(255,255,255,.19); border-radius: 14px; background: rgba(255,255,255,.06); box-shadow: 0 12px 35px rgba(0,0,0,.18); transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.store-button:hover { transform: translateY(-3px); border-color: rgba(85,214,203,.55); background: rgba(255,255,255,.1); }
.store-button small, .store-button strong { display: block; line-height: 1.2; }
.store-button small { color: #aab9ba; font-size: 10px; }
.store-button strong { margin-top: 3px; font-size: 16px; letter-spacing: -.03em; }
.store-symbol { width: 27px; display: grid; place-items: center; font-size: 0; }
.store-symbol.apple::before { content: ""; font-family: system-ui, sans-serif; color: #fff; font-size: 31px; line-height: 1; }
.play-symbol { width: 27px; height: 31px; flex: 0 0 auto; }
.platform-note { margin: 15px 0 0 4px; color: #708689; font-size: 12px; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); pointer-events: none; }
.hero-glow-one { top: 110px; right: 5%; width: 520px; height: 520px; border: 1px solid rgba(85,214,203,.12); box-shadow: inset 0 0 120px rgba(85,214,203,.05); }
.hero-glow-two { top: 250px; right: 16%; width: 270px; height: 270px; border: 1px solid rgba(229,193,90,.12); }
.hero-visual { position: relative; align-self: end; height: 690px; display: flex; align-items: flex-end; justify-content: center; }
.phone { position: relative; overflow: hidden; border: 8px solid #162a2e; border-radius: 52px; background: #081416; box-shadow: 0 40px 90px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.1); }
.phone img { width: 100%; height: auto; }
.phone-speaker { position: absolute; z-index: 2; top: 9px; left: 50%; width: 34%; height: 22px; transform: translateX(-50%); border-radius: 999px; background: #030809; }
.phone-hero { z-index: 2; width: 356px; transform: translateY(42px); }
.app-orbit { position: absolute; z-index: 3; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.15); border-radius: 18px; background: rgba(13,35,39,.78); box-shadow: 0 18px 50px rgba(0,0,0,.35); backdrop-filter: blur(12px); font-weight: 850; }
.orbit-one { top: 142px; right: 24px; width: 94px; height: 62px; color: var(--gold-soft); }
.orbit-two { bottom: 118px; left: 15px; width: 102px; height: 62px; color: var(--teal); }
.hero-metrics { position: relative; z-index: 4; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.hero-metrics div { display: flex; align-items: baseline; gap: 14px; padding: 28px 0; border-right: 1px solid var(--line); }
.hero-metrics div:not(:first-child) { padding-left: 34px; }
.hero-metrics div:last-child { border-right: 0; }
.hero-metrics strong { font-size: 22px; color: #fff; }
.hero-metrics span { color: #7f9597; font-size: 13px; }

.section { padding: 128px 0; }
.section-heading { margin-bottom: 58px; }
.centered { text-align: center; }
.section-heading h2, .detail-copy h2, .classic-copy h2, .download-inner h2 { margin: 18px 0 20px; font-size: clamp(40px, 5vw, 60px); line-height: 1.2; letter-spacing: -.055em; }
.section-heading p, .detail-copy > p, .classic-copy > p { color: var(--muted); font-size: 17px; }
.feature-section { background: #091c20; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.feature-card { position: relative; overflow: hidden; min-height: 380px; padding: 44px; border: 1px solid var(--line); border-radius: 30px; background: linear-gradient(145deg, #10272c, #0b2024); }
.feature-card-wide { grid-column: 1 / -1; height: 590px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; padding: 58px 68px; }
.feature-copy { z-index: 2; max-width: 510px; }
.feature-number { color: var(--teal); font-size: 12px; font-weight: 900; letter-spacing: .1em; }
.feature-card h3 { margin: 15px 0 16px; font-size: 34px; line-height: 1.3; letter-spacing: -.045em; }
.feature-card p { color: #9db0b2; font-size: 16px; }
.feature-card ul { margin: 28px 0 0; padding: 0; list-style: none; color: #c8d4d5; font-size: 14px; }
.feature-card li { position: relative; margin-top: 10px; padding-left: 19px; }
.feature-card li::before { content: ""; position: absolute; left: 0; top: .7em; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.feature-phone { position: absolute; right: 78px; top: 64px; width: 292px; border-width: 6px; border-radius: 42px; box-shadow: 0 36px 70px rgba(0,0,0,.45); }
.feature-icon { width: 56px; height: 56px; display: grid; place-items: center; margin-top: 52px; border-radius: 16px; background: rgba(85,214,203,.1); color: var(--teal); }
.feature-icon svg { width: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.accent-card { background: linear-gradient(145deg, #12363a, #0b2327); }
.news-card { background: linear-gradient(145deg, #182b2e, #0b2024); }

.detail-section { overflow: hidden; background: #061518; }
.detail-grid { min-height: 720px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 110px; }
.detail-visual { position: relative; height: 710px; display: flex; justify-content: center; }
.detail-phone { width: 335px; align-self: start; }
.detail-badge { position: absolute; z-index: 3; display: flex; align-items: center; gap: 10px; padding: 15px 19px; border: 1px solid rgba(255,255,255,.14); border-radius: 15px; background: rgba(18,44,49,.92); box-shadow: 0 18px 45px rgba(0,0,0,.35); backdrop-filter: blur(10px); font-size: 13px; font-weight: 800; }
.detail-badge span { color: var(--teal); }
.detail-badge-top { top: 130px; right: 8px; }
.detail-badge-bottom { bottom: 112px; left: 0; }
.detail-copy > p { max-width: 520px; margin-bottom: 42px; }
.detail-list { border-top: 1px solid var(--line); }
.detail-list > div { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.detail-list span { color: var(--gold); font-size: 12px; font-weight: 900; }
.detail-list p { margin: 0; color: #90a2a4; font-size: 14px; }
.detail-list strong { display: block; margin-bottom: 3px; color: #f5f7f6; font-size: 16px; }

.classic-section { position: relative; overflow: hidden; background: #000; }
.classic-glow { position: absolute; top: 50%; left: 14%; width: 560px; height: 560px; transform: translateY(-50%); border-radius: 50%; background: radial-gradient(circle, rgba(152,112,22,.25), transparent 67%); }
.classic-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 90px; }
.section-kicker.gold { color: var(--gold); }
.classic-copy > p { max-width: 570px; }
.classic-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
.classic-tags span { padding: 9px 14px; border: 1px solid rgba(229,193,90,.22); border-radius: 999px; background: rgba(229,193,90,.06); color: #d7c58f; font-size: 12px; }
.classic-phone { justify-self: center; width: 320px; border-color: #1b1b1b; }

.update-section { background: #0a1d21; }
.update-wrap { padding: 64px; border: 1px solid var(--line); border-radius: 36px; background: linear-gradient(145deg, rgba(20,48,53,.86), rgba(8,27,31,.94)); }
.update-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 44px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.update-heading h2 { margin: 11px 0 0; font-size: 46px; letter-spacing: -.05em; }
.release-date { color: #789093; font-size: 13px; }
.update-grid { display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 56px; row-gap: 34px; }
.update-grid article { position: relative; padding-left: 52px; }
.update-grid article > span { position: absolute; left: 0; top: 2px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: rgba(85,214,203,.1); color: var(--teal); font-size: 11px; font-weight: 900; }
.update-grid h3 { margin-bottom: 8px; font-size: 19px; }
.update-grid p { margin-bottom: 0; color: #91a5a7; font-size: 14px; }

.download-section { position: relative; overflow: hidden; padding: 136px 0; background: linear-gradient(180deg, #061417, #02090b); text-align: center; }
.download-glow { position: absolute; left: 50%; top: 50%; width: 680px; height: 420px; transform: translate(-50%, -50%); border-radius: 50%; background: radial-gradient(circle, rgba(15,127,120,.24), transparent 70%); }
.download-inner { position: relative; z-index: 2; }
.download-inner > img { margin: 0 auto 28px; border-radius: 29px; box-shadow: 0 24px 64px rgba(0,0,0,.45); }
.download-inner > p { margin-bottom: 30px; color: #91a2a4; }
.centered-buttons { justify-content: center; }

footer { padding: 50px 0 60px; border-top: 1px solid var(--line); background: #02090b; }
.footer-inner { color: #6f8486; font-size: 12px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; color: #e8eeee; font-size: 16px; font-weight: 850; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 18px; color: #a1b1b2; font-weight: 700; }
.footer-links a:hover { color: var(--teal); }
.footer-inner p { max-width: 720px; margin-bottom: 14px; }

@media (max-width: 920px) {
  .hero { padding-top: 142px; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 0; }
  .hero-copy { padding-bottom: 56px; }
  .hero-description { margin-inline: auto; }
  .store-buttons { justify-content: center; }
  .hero-visual { height: 610px; }
  .hero-metrics div { display: block; text-align: center; }
  .hero-metrics div:not(:first-child) { padding-left: 0; }
  .hero-metrics strong, .hero-metrics span { display: block; }
  .feature-card-wide { height: 830px; grid-template-columns: 1fr; align-items: start; padding: 48px; }
  .feature-copy { max-width: 100%; }
  .feature-phone { top: auto; bottom: -295px; right: 50%; transform: translateX(50%); }
  .detail-grid, .classic-grid { grid-template-columns: 1fr; gap: 70px; }
  .detail-visual { order: 2; }
  .detail-copy { text-align: center; }
  .detail-copy > p { margin-inline: auto; }
  .detail-list { text-align: left; }
  .classic-copy { text-align: center; }
  .classic-copy > p { margin-inline: auto; }
  .classic-tags { justify-content: center; }
}

@media (max-width: 640px) {
  .shell { width: min(calc(100% - 32px), var(--max)); }
  .header-inner { height: 66px; }
  .brand { font-size: 17px; }
  .brand img { width: 38px; height: 38px; }
  nav a:not(.nav-download) { display: none; }
  .nav-download { padding: 7px 13px; font-size: 12px; }
  .hero { padding-top: 120px; }
  h1 { font-size: 47px; }
  .hero-description { font-size: 16px; }
  .hero-highlights { grid-template-columns: 1fr; margin-inline: auto; text-align: left; }
  .store-buttons { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .store-button { min-width: 0; height: 58px; padding: 9px 12px; gap: 9px; }
  .store-button strong { font-size: 14px; }
  .store-symbol, .play-symbol { width: 24px; }
  .hero-visual { height: 540px; }
  .phone-hero { width: 290px; }
  .orbit-one { right: 0; }
  .orbit-two { left: 0; }
  .hero-metrics { grid-template-columns: 1fr; padding: 10px 0; }
  .hero-metrics div, .hero-metrics div:not(:first-child) { display: flex; justify-content: space-between; align-items: center; padding: 14px 4px; border-right: 0; border-bottom: 1px solid var(--line); text-align: left; }
  .hero-metrics div:last-child { border-bottom: 0; }
  .hero-metrics strong, .hero-metrics span { display: inline; }
  .section { padding: 88px 0; }
  .section-heading h2, .detail-copy h2, .classic-copy h2, .download-inner h2 { font-size: 38px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 340px; padding: 34px 28px; border-radius: 24px; }
  .feature-card-wide { grid-column: auto; height: 760px; }
  .feature-card h3 { font-size: 29px; }
  .feature-phone { width: 250px; bottom: -240px; }
  .feature-icon { margin-top: 38px; }
  .detail-grid { gap: 48px; }
  .detail-visual { height: 650px; }
  .detail-phone { width: 290px; }
  .detail-badge-top { right: -2px; }
  .detail-badge-bottom { left: -2px; }
  .classic-grid { gap: 48px; }
  .classic-phone { width: 286px; }
  .update-wrap { padding: 34px 24px; border-radius: 26px; }
  .update-heading { display: block; }
  .update-heading h2 { font-size: 34px; }
  .release-date { display: block; margin-top: 8px; }
  .update-grid { grid-template-columns: 1fr; row-gap: 30px; }
  .download-section { padding: 100px 0; }
  .download-inner > img { width: 104px; height: 104px; border-radius: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}