:root {
  --ink: #11131a;
  --muted: #626978;
  --paper: #f7f7f2;
  --white: #ffffff;
  --line: rgba(17, 19, 26, 0.12);
  --blue: #3158ff;
  --violet: #7647ff;
  --cyan: #45d5ff;
  --night: #0d1020;
  --lime: #d9ff62;
  --shadow: 0 30px 80px rgba(20, 28, 70, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }

.noise {
  position: fixed;
  inset: 0;
  opacity: .045;
  pointer-events: none;
  z-index: 20;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");
}

.site-header {
  width: min(1180px, calc(100% - 40px));
  margin: 18px auto 0;
  min-height: 66px;
  padding: 10px 12px 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  z-index: 10;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.86);
  box-shadow: 0 12px 42px rgba(20, 28, 70, .08);
  backdrop-filter: blur(20px);
  border-radius: 18px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-family: "Manrope", sans-serif; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; color: #fff; background: linear-gradient(145deg, var(--blue), var(--violet)); box-shadow: 0 8px 22px rgba(49,88,255,.28); }
.site-header nav { display: flex; gap: 28px; font-size: 14px; font-weight: 600; color: #4e5564; }
.site-header nav a:hover { color: var(--ink); }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border-radius: 14px; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 42px; padding: 0 16px; border-radius: 12px; font-size: 14px; }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--blue), var(--violet)); box-shadow: 0 14px 34px rgba(49,88,255,.28); }
.button-secondary { border: 1px solid var(--line); background: rgba(255,255,255,.65); }
.button-secondary:hover, .button-ghost:hover { background: #fff; box-shadow: 0 12px 28px rgba(17,19,26,.08); }
.button-ghost { border: 1px solid var(--line); }
.button-secondary.light { color: #fff; border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.08); }
.button-secondary.light:hover { background: rgba(255,255,255,.14); }

.section-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero { min-height: 760px; padding: 92px 0 80px; display: grid; grid-template-columns: .94fr 1.06fr; align-items: center; gap: 64px; }
.eyebrow { margin: 0 0 16px; font-size: 12px; line-height: 1.2; letter-spacing: .16em; font-weight: 800; color: var(--blue); }
h1, h2, h3 { font-family: "Manrope", sans-serif; margin: 0; line-height: 1.08; letter-spacing: -.045em; }
h1 { max-width: 680px; font-size: clamp(48px, 6.2vw, 82px); }
h2 { font-size: clamp(38px, 4.8vw, 64px); }
h3 { font-size: 28px; }
.hero-text { max-width: 650px; margin: 26px 0 0; color: var(--muted); font-size: 19px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 34px; }
.microcopy { max-width: 620px; margin: 18px 0 0; font-size: 12px; color: #7a8190; }

.hero-visual { position: relative; min-height: 530px; display: grid; place-items: center; }
.orb { position: absolute; border-radius: 50%; filter: blur(2px); }
.orb-one { width: 310px; height: 310px; right: 0; top: 0; background: radial-gradient(circle at 35% 30%, rgba(69,213,255,.72), rgba(49,88,255,.1) 65%, transparent 72%); }
.orb-two { width: 340px; height: 340px; left: -10px; bottom: -10px; background: radial-gradient(circle at 55% 45%, rgba(118,71,255,.52), rgba(49,88,255,.05) 64%, transparent 72%); }
.domain-card { width: min(100%, 620px); min-height: 410px; padding: 30px 32px 0; position: relative; overflow: hidden; color: #fff; background: linear-gradient(145deg, #111525, #1a2151 56%, #293b8f); border: 1px solid rgba(255,255,255,.15); border-radius: 32px; box-shadow: var(--shadow); transform: rotate(-2deg); }
.domain-card::before { content: ""; position: absolute; inset: -20% 22% 40% -20%; background: radial-gradient(circle, rgba(69,213,255,.22), transparent 68%); }
.domain-card-top { display: flex; align-items: center; gap: 9px; position: relative; z-index: 2; font-size: 11px; letter-spacing: .14em; color: rgba(255,255,255,.72); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 18px rgba(217,255,98,.76); }
.domain-word { margin-top: 72px; position: relative; z-index: 2; font: 800 clamp(62px, 8vw, 112px)/.95 "Manrope", sans-serif; letter-spacing: -.075em; }
.domain-word span { color: var(--cyan); }
.domain-subline { margin-top: 14px; position: relative; z-index: 2; color: rgba(255,255,255,.72); font-size: 15px; }
.skyline { position: absolute; left: 0; right: 0; bottom: -4px; color: var(--cyan); opacity: .9; }
.skyline svg { display: block; width: 100%; }
.price-card { position: absolute; right: -12px; bottom: 26px; z-index: 3; min-width: 205px; padding: 18px 20px; display: grid; gap: 2px; background: rgba(255,255,255,.9); border: 1px solid rgba(255,255,255,.95); border-radius: 18px; box-shadow: 0 20px 50px rgba(15,18,43,.18); backdrop-filter: blur(14px); }
.price-card span { font-size: 10px; letter-spacing: .13em; font-weight: 800; color: var(--blue); }
.price-card strong { font: 800 28px/1.2 "Manrope", sans-serif; letter-spacing: -.04em; }
.price-card small { color: var(--muted); }

.trust-strip { min-height: 88px; padding: 22px 28px; display: flex; justify-content: center; align-items: center; gap: 28px; flex-wrap: wrap; color: rgba(255,255,255,.75); background: var(--night); font-size: 12px; letter-spacing: .13em; font-weight: 800; }
.trust-strip i { width: 4px; height: 4px; border-radius: 50%; background: var(--cyan); }

.vision { padding: 120px 0 110px; }
.section-heading { max-width: 760px; }
.section-heading p:not(.eyebrow) { margin: 20px 0 0; color: var(--muted); font-size: 18px; }
.section-heading.centered { text-align: center; margin: 0 auto; }
.scenario-tabs { margin-top: 44px; display: flex; gap: 10px; flex-wrap: wrap; }
.scenario-tab { min-height: 44px; padding: 0 17px; border: 1px solid var(--line); border-radius: 999px; color: #565e6e; background: rgba(255,255,255,.45); cursor: pointer; font-weight: 700; }
.scenario-tab.active { color: #fff; border-color: transparent; background: var(--ink); box-shadow: 0 10px 28px rgba(17,19,26,.16); }
.ownership-grid { margin-top: 26px; display: grid; grid-template-columns: 1.18fr .82fr; gap: 26px; align-items: stretch; }
.browser-frame { min-height: 510px; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: 0 24px 72px rgba(20,28,70,.12); }
.browser-chrome { height: 58px; padding: 0 18px; display: grid; grid-template-columns: 80px 1fr 80px; align-items: center; background: #f1f2f4; border-bottom: 1px solid var(--line); }
.window-dots { display: flex; gap: 7px; }
.window-dots span { width: 10px; height: 10px; border-radius: 50%; background: #cfd2d8; }
.address-bar { min-height: 34px; padding: 6px 14px; border-radius: 9px; background: #fff; color: #596172; font-size: 12px; text-align: center; box-shadow: inset 0 0 0 1px rgba(17,19,26,.07); }
.browser-actions { text-align: right; color: #8d94a2; letter-spacing: .2em; }
.browser-content { min-height: 452px; padding: 58px 54px 40px; position: relative; overflow: hidden; color: #fff; background: radial-gradient(circle at 85% 15%, rgba(69,213,255,.34), transparent 28%), linear-gradient(145deg, #0d1020, #171d45 58%, #26398d); transition: background .35s ease; }
.browser-content::after { content: "SEOUL.IO"; position: absolute; right: -18px; bottom: -28px; color: rgba(255,255,255,.045); font: 800 96px/1 "Manrope", sans-serif; letter-spacing: -.08em; }
.preview-badge { display: inline-flex; padding: 8px 10px; border: 1px solid rgba(255,255,255,.22); border-radius: 8px; color: var(--cyan); font-size: 10px; letter-spacing: .13em; font-weight: 800; }
.browser-content h3 { margin-top: 28px; max-width: 520px; font-size: clamp(38px, 5vw, 63px); }
.browser-content > p { max-width: 560px; color: rgba(255,255,255,.72); font-size: 15px; }
.preview-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 26px; }
.preview-actions span { padding: 10px 13px; border-radius: 10px; background: #fff; color: var(--night); font-size: 12px; font-weight: 800; }
.preview-actions span:last-child { color: #fff; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); }
.preview-metrics { margin-top: 38px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; position: relative; z-index: 2; }
.preview-metrics div { padding: 14px; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.06); border-radius: 12px; }
.preview-metrics strong { display: block; color: var(--cyan); font: 800 17px/1.2 "Manrope", sans-serif; }
.preview-metrics span { color: rgba(255,255,255,.65); font-size: 11px; }
.ownership-copy { padding: 42px; display: flex; flex-direction: column; justify-content: center; background: #fff; border: 1px solid var(--line); border-radius: 26px; }
.question-label { margin: 0 0 13px; color: var(--blue); font-size: 10px; letter-spacing: .15em; font-weight: 800; }
.ownership-copy h3 { font-size: 34px; }
.ownership-copy > p:not(.question-label) { margin: 18px 0 0; color: var(--muted); }
.feature-benefit { margin-top: 30px; padding: 18px; display: grid; grid-template-columns: 1fr 36px 1fr; align-items: center; gap: 10px; background: var(--paper); border-radius: 16px; }
.feature-benefit span { display: block; margin-bottom: 5px; color: #8b92a0; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; font-weight: 800; }
.feature-benefit strong { font-size: 13px; line-height: 1.35; }
.feature-benefit .arrow { color: var(--blue); text-align: center; font-size: 20px; }
.text-link { margin-top: 28px; color: var(--blue); font-weight: 800; }
.text-link span { margin-left: 4px; }
.concept-note { margin: 18px 0 0; color: #878e9a; font-size: 12px; }

.value-section { padding: 110px 0; color: #fff; background: var(--night); }
.value-section .section-heading p:not(.eyebrow) { color: rgba(255,255,255,.62); }
.value-cards { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.value-card { min-height: 330px; padding: 28px; display: flex; flex-direction: column; border: 1px solid rgba(255,255,255,.12); border-radius: 22px; background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025)); }
.value-card .icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; color: var(--night); background: var(--lime); font-size: 22px; font-weight: 800; }
.value-card h3 { margin-top: 44px; font-size: 28px; }
.value-card p { color: rgba(255,255,255,.62); }
.card-question { margin-top: auto; padding-top: 26px; color: var(--cyan); font-size: 13px; font-weight: 700; }

.fit { padding: 110px 0; }
.fit-panel { padding: 56px; display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; color: #fff; background: linear-gradient(135deg, #3158ff, #7447ff); border-radius: 30px; box-shadow: var(--shadow); }
.fit-panel .eyebrow { color: var(--lime); }
.fit-list { display: grid; align-content: center; }
.fit-list span { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.2); font-size: 16px; font-weight: 700; }
.fit-list span:last-child { border-bottom: 0; }

.acquisition { padding: 10px 0 110px; }
.acquisition-card { padding: 54px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 72px; color: #fff; background: #10131f; border-radius: 30px; box-shadow: var(--shadow); }
.acquisition-copy > p:not(.eyebrow):not(.contact-line) { color: rgba(255,255,255,.65); }
.price-row { margin-top: 34px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.price-row div { padding: 18px; border: 1px solid rgba(255,255,255,.13); border-radius: 15px; background: rgba(255,255,255,.045); }
.price-row span { display: block; color: rgba(255,255,255,.52); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; font-weight: 800; }
.price-row strong { display: block; margin-top: 5px; font: 800 22px/1.2 "Manrope", sans-serif; }
.acquisition-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.contact-line { margin: 18px 0 0; color: rgba(255,255,255,.64); font-size: 13px; }
.process-list { display: grid; align-content: center; gap: 14px; }
.process-list > div { padding: 19px; display: grid; grid-template-columns: 44px 1fr; gap: 13px; border: 1px solid rgba(255,255,255,.12); border-radius: 16px; background: rgba(255,255,255,.04); }
.process-list > div > span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: var(--night); background: var(--cyan); font: 800 12px/1 "Manrope", sans-serif; }
.process-list p { margin: 0; color: rgba(255,255,255,.6); font-size: 13px; }
.process-list strong { display: block; margin-bottom: 3px; color: #fff; font-size: 15px; }

.faq { padding: 0 0 110px; }
.faq-grid { margin-top: 40px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
details { padding: 20px 22px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
summary { cursor: pointer; list-style: none; font-weight: 800; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; color: var(--blue); }
details[open] summary::after { content: "−"; }
details p { margin: 14px 0 0; color: var(--muted); font-size: 14px; }

footer { padding: 42px 0; color: rgba(255,255,255,.62); background: #090b12; }
.footer-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: end; }
.footer-brand { color: #fff; }
.footer-inner p { margin: 10px 0 0; font-size: 13px; }
.footer-links { display: flex; gap: 20px; font-size: 13px; font-weight: 700; }
.footer-links a:hover { color: #fff; }
.copyright { grid-column: 1 / -1; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 72px; }
  .hero-copy { max-width: 760px; }
  .hero-visual { min-height: 500px; }
  .ownership-grid, .fit-panel, .acquisition-card { grid-template-columns: 1fr; }
  .value-cards { grid-template-columns: 1fr; }
  .value-card { min-height: 260px; }
  .fit-panel, .acquisition-card { gap: 42px; }
}

@media (max-width: 660px) {
  .site-header { width: min(100% - 20px, 1180px); }
  .site-header .button { display: none; }
  .section-shell { width: min(100% - 24px, 1180px); }
  .hero { padding: 58px 0 64px; }
  h1 { font-size: 48px; }
  h2 { font-size: 38px; }
  .domain-card { min-height: 360px; padding: 24px 22px 0; transform: none; }
  .domain-word { margin-top: 68px; font-size: 65px; }
  .price-card { right: 4px; bottom: 8px; }
  .trust-strip { justify-content: flex-start; padding-left: 24px; }
  .scenario-tabs { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; }
  .scenario-tab { flex: 0 0 auto; }
  .browser-content { padding: 40px 24px 30px; }
  .browser-content h3 { font-size: 42px; }
  .browser-chrome { grid-template-columns: 58px 1fr 34px; }
  .ownership-copy, .fit-panel, .acquisition-card { padding: 30px 24px; }
  .feature-benefit { grid-template-columns: 1fr; }
  .feature-benefit .arrow { transform: rotate(90deg); }
  .preview-metrics { grid-template-columns: 1fr; }
  .value-section, .vision, .fit { padding-top: 86px; padding-bottom: 86px; }
  .price-row, .faq-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; align-items: start; }
  .footer-links { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}