:root {
  color-scheme: dark;
  --ink: #f7f5ff;
  --muted: #aaa6bd;
  --violet: #8b7cff;
  --violet-bright: #b8adff;
  --night: #100e20;
  --panel: #19162c;
  --line: rgba(255,255,255,.11);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--night); color: var(--ink); }
a { color: inherit; text-decoration: none; }
.site-header { position: relative; z-index: 10; display: flex; align-items: center; justify-content: space-between; width: min(1180px, calc(100% - 48px)); height: 88px; margin: auto; border-bottom: 1px solid var(--line); }
.company-mark { display: flex; align-items: center; gap: 12px; font-size: 14px; letter-spacing: .16em; }
.company-symbol { position: relative; width: 32px; height: 32px; transform: rotate(45deg); }
.company-symbol i { position: absolute; display: block; width: 18px; height: 10px; border: 3px solid var(--violet-bright); border-radius: 999px; }
.company-symbol i:first-child { top: 4px; left: 1px; }
.company-symbol i:last-child { right: 1px; bottom: 4px; }
.site-header nav { display: flex; align-items: center; gap: 34px; color: var(--muted); font-size: 13px; font-weight: 700; }
.site-header nav a:hover { color: white; }
.site-header .nav-cta { padding: 11px 17px; border: 1px solid rgba(184,173,255,.42); border-radius: 999px; color: var(--ink); }

main { overflow: hidden; }
.hero { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; width: min(1180px, calc(100% - 48px)); min-height: 720px; margin: auto; padding: 70px 0 95px; }
.hero::before { content: ""; position: absolute; top: -230px; left: 45%; width: 740px; height: 740px; border-radius: 50%; background: radial-gradient(circle, rgba(105,86,238,.22), transparent 68%); pointer-events: none; }
.hero-copy { position: relative; z-index: 2; max-width: 650px; }
.eyebrow { margin: 0 0 20px; color: var(--violet-bright); font-size: 12px; font-weight: 900; letter-spacing: .2em; }
.hero h1 { margin: 0; font-size: clamp(54px, 6.7vw, 92px); line-height: .98; letter-spacing: -.065em; }
.hero h1 em { color: var(--violet-bright); font-style: normal; }
.hero-description { max-width: 610px; margin: 34px 0 0; color: var(--muted); font-size: 17px; line-height: 1.85; word-break: keep-all; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 40px; }
.primary-action, .closing > a { display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; min-width: 205px; padding: 17px 21px; border-radius: 14px; background: var(--violet); color: white; font-size: 14px; font-weight: 850; box-shadow: 0 18px 44px rgba(91,75,217,.3); }
.primary-action:hover, .closing > a:hover { background: #9b8fff; transform: translateY(-2px); }
.text-action { padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.4); color: #d3d0df; font-size: 14px; font-weight: 750; }

.hero-visual { position: relative; min-height: 560px; }
.glow { position: absolute; border-radius: 50%; filter: blur(2px); }
.glow-one { top: 40px; right: -40px; width: 410px; height: 410px; background: linear-gradient(140deg, rgba(110,89,255,.42), rgba(255,116,153,.18)); }
.glow-two { bottom: 25px; left: 0; width: 260px; height: 260px; background: rgba(78,207,175,.14); }
.phone-card { position: absolute; z-index: 2; top: 0; left: 50%; width: 300px; height: 590px; padding: 18px 20px; border: 7px solid #2e294d; border-radius: 43px; background: linear-gradient(160deg, #f3efff, #fffaf4 47%); color: #182033; box-shadow: 0 42px 100px rgba(0,0,0,.5); transform: translateX(-42%) rotate(4deg); }
.phone-card::before { content: ""; position: absolute; top: 9px; left: 50%; width: 78px; height: 19px; border-radius: 20px; background: #211e38; transform: translateX(-50%); }
.phone-top { display: flex; justify-content: space-between; padding: 2px 7px 28px; font-size: 10px; font-weight: 800; }
.phone-top i { width: 32px; height: 8px; border-radius: 99px; background: linear-gradient(90deg, #27233c 60%, #7268b6 60%); }
.app-brand { display: flex; align-items: center; gap: 8px; color: #5b4bd9; font-size: 15px; }
.app-brand img { width: 34px; height: 34px; border-radius: 11px; }
.phone-kicker { margin: 52px 0 6px; color: #5b4bd9; font-size: 10px; font-weight: 900; }
.phone-card h2 { margin: 0; font-size: 27px; line-height: 1.16; letter-spacing: -1.2px; }
.coupon-card { display: flex; align-items: center; gap: 10px; margin-top: 32px; padding: 14px; border-radius: 18px; background: #292643; color: white; box-shadow: 0 18px 34px rgba(41,38,67,.2); }
.coupon-brand { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; background: #ffd166; color: #332914; font-weight: 950; }
.coupon-card > div:nth-child(2) { min-width: 0; flex: 1; }
.coupon-card strong, .coupon-card span { display: block; }
.coupon-card strong { font-size: 11px; }
.coupon-card span { margin-top: 3px; color: #c4c0d6; font-size: 9px; }
.coupon-card b { color: #fff0a4; font-size: 9px; }
.phone-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.phone-stats span { padding: 12px 9px; border: 1px solid #e4e0f4; border-radius: 14px; background: rgba(255,255,255,.7); color: #69667b; font-size: 9px; }
.phone-stats b { display: block; margin-bottom: 3px; color: #5b4bd9; font-size: 18px; }
.float-card { position: absolute; z-index: 3; min-width: 160px; padding: 15px 17px; border: 1px solid rgba(255,255,255,.15); border-radius: 16px; background: rgba(33,29,57,.88); box-shadow: 0 18px 44px rgba(0,0,0,.3); backdrop-filter: blur(15px); }
.float-card span, .float-card strong { display: block; }
.float-card span { color: var(--muted); font-size: 10px; }
.float-card strong { margin-top: 5px; font-size: 15px; }
.float-saving { top: 150px; left: 5px; }
.float-safe { right: -12px; bottom: 92px; }

.intro { display: grid; grid-template-columns: 1fr .72fr; gap: 80px; width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 135px 0 75px; border-top: 1px solid var(--line); }
.section-heading h2, .principles h2 { margin: 0; font-size: clamp(38px, 4.6vw, 62px); line-height: 1.12; letter-spacing: -.055em; }
.intro-copy { padding-top: 37px; }
.intro-copy p, .principles-copy > p:last-child { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.85; word-break: keep-all; }
.intro-copy a { display: inline-block; margin-top: 28px; color: var(--violet-bright); font-size: 14px; font-weight: 800; }
.intro-copy a span { margin-left: 7px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; width: min(1180px, calc(100% - 48px)); margin: auto; padding-bottom: 145px; }
.feature { position: relative; min-height: 390px; padding: 28px; overflow: hidden; border-radius: 25px; }
.feature::after { content: ""; position: absolute; right: -65px; bottom: -65px; width: 200px; height: 200px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 38px rgba(255,255,255,.04), 0 0 0 76px rgba(255,255,255,.025); }
.feature-purple { background: #7567df; }
.feature-mint { background: #278a75; }
.feature-coral { background: #c85f59; }
.feature-number { font-size: 11px; font-weight: 900; letter-spacing: .12em; opacity: .72; }
.feature-icon { display: grid; place-items: center; width: 66px; height: 66px; margin-top: 62px; border: 1px solid rgba(255,255,255,.24); border-radius: 21px; background: rgba(255,255,255,.12); font-size: 28px; font-weight: 850; }
.feature h3 { margin: 45px 0 12px; font-size: 25px; letter-spacing: -.04em; }
.feature p { max-width: 285px; margin: 0; color: rgba(255,255,255,.78); font-size: 14px; line-height: 1.72; word-break: keep-all; }

.principles { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; width: min(1180px, calc(100% - 48px)); margin: auto; padding: 130px 0; border-top: 1px solid var(--line); }
.principles-copy > p:last-child { margin-top: 32px; }
.principle-list { margin: 0; padding: 0; list-style: none; }
.principle-list li { display: grid; grid-template-columns: 42px 1fr; gap: 20px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.principle-list li:first-child { border-top: 1px solid var(--line); }
.principle-list li > span { padding-top: 3px; color: var(--violet-bright); font-size: 11px; font-weight: 900; }
.principle-list strong { font-size: 18px; }
.principle-list p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.closing { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; width: min(1180px, calc(100% - 48px)); margin: 0 auto 110px; padding: 50px; border: 1px solid rgba(184,173,255,.2); border-radius: 28px; background: linear-gradient(120deg, #211c46, #19162c 62%, #2d2039); }
.closing img { width: 70px; height: 70px; border-radius: 21px; box-shadow: 0 15px 35px rgba(91,75,217,.3); }
.closing p { margin: 0 0 7px; color: var(--violet-bright); font-size: 12px; font-weight: 800; }
.closing h2 { margin: 0; font-size: 30px; letter-spacing: -.04em; }
.closing > a { min-width: 160px; }

footer { display: flex; justify-content: space-between; gap: 50px; width: min(1180px, calc(100% - 48px)); margin: auto; padding: 45px 0 58px; border-top: 1px solid var(--line); color: #777389; font-size: 12px; line-height: 1.8; }
.footer-brand strong { color: #d8d4e3; font-size: 14px; letter-spacing: .15em; }
.footer-brand p, .footer-info p { margin: 6px 0 0; }
.footer-info { text-align: right; }
.footer-info a:hover { color: var(--violet-bright); }
.footer-info small { display: block; margin-top: 8px; color: #5f5b6e; }

@media (max-width: 900px) {
  .site-header nav > a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 80px; }
  .hero-copy { text-align: center; margin: auto; }
  .hero-description { margin-right: auto; margin-left: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin-top: 75px; }
  .phone-card { left: 50%; transform: translateX(-50%) rotate(3deg); }
  .float-saving { left: calc(50% - 250px); }
  .float-safe { right: calc(50% - 260px); }
  .intro, .principles { grid-template-columns: 1fr; gap: 35px; }
  .intro-copy { padding-top: 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: 300px; }
  .feature-icon { margin-top: 35px; }
  .feature h3 { margin-top: 30px; }
}

@media (max-width: 620px) {
  .site-header, .hero, .intro, .feature-grid, .principles, .closing, footer { width: min(100% - 32px, 1180px); }
  .site-header { height: 72px; }
  .company-mark { font-size: 12px; }
  .site-header .nav-cta { padding: 9px 13px; font-size: 11px; }
  .hero { min-height: 0; padding: 75px 0 90px; }
  .hero h1 { font-size: clamp(45px, 14vw, 66px); }
  .hero-description { font-size: 15px; }
  .hero-actions { flex-direction: column; gap: 16px; }
  .primary-action { width: 100%; }
  .hero-visual { min-height: 520px; margin-top: 65px; transform: scale(.88); transform-origin: top center; }
  .float-saving { left: -15px; }
  .float-safe { right: -22px; }
  .intro { padding-top: 95px; }
  .section-heading h2, .principles h2 { font-size: 39px; }
  .feature-grid { padding-bottom: 100px; }
  .feature { padding: 24px; }
  .principles { padding: 95px 0; }
  .closing { grid-template-columns: 1fr; padding: 30px; text-align: left; }
  .closing > a { width: 100%; }
  footer { flex-direction: column; gap: 25px; }
  .footer-info { text-align: left; }
}

@media (prefers-reduced-motion: no-preference) {
  .primary-action, .closing > a { transition: transform .2s ease, background .2s ease; }
  .phone-card { animation: float 5s ease-in-out infinite; }
  @keyframes float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -10px; } }
}