:root {
  --blue: #4169FF;
  --blue-hover: #2C4FE0;
  --ink: #0A0D14;
  --bg: #FAFBFF;
  --surface: #FFFFFF;
  --line: #E3E8F5;
  --line-strong: #C9D3F5;
  --tint: #EEF2FF;
  --field: #F5F7FE;
  --pad: 80px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; word-break: keep-all; line-height: 1.5; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-hover); }
h1, h2, h3, p { margin: 0; }
img { max-width: 100%; }
svg { flex-shrink: 0; }
.mono { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; }
.wrap { max-width: 1440px; margin: 0 auto; padding-inline: var(--pad); }
.eyebrow { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 13px; font-weight: 600; letter-spacing: .08em; color: var(--blue); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 58px; padding: 0 26px; border-radius: 14px; font-size: 17px; font-weight: 600; white-space: nowrap; transition: background .15s, border-color .15s; }
.btn-primary { background: var(--blue); color: #FFFFFF; box-shadow: 0 12px 24px -12px rgba(65, 105, 255, .7); }
.btn-primary:hover { background: var(--blue-hover); color: #FFFFFF; }
.btn-line { background: var(--surface); border: 1px solid var(--line-strong); color: var(--ink); }
.btn-line:hover { border-color: var(--blue); color: var(--ink); }
.btn-white { background: #FFFFFF; color: var(--ink); font-weight: 700; }
.btn-white:hover { color: var(--ink); background: #F1F4FF; }
.btn-sm { height: 44px; padding: 0 18px; border-radius: 12px; font-size: 15px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 76px; }
.logo img { display: block; height: 30px; width: auto; }
.nav { display: flex; align-items: center; gap: 36px; font-size: 15px; font-weight: 500; }
.nav a { color: var(--ink); }
.nav a:hover { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang { font-size: 14px; font-weight: 600; color: var(--ink); padding: 0 8px; }

/* hero */
.hero { padding-block: 96px 104px; background-color: var(--bg); background-image: radial-gradient(#DCE3FA 1px, transparent 1px); background-size: 24px 24px; }
.hero-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px; align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: 28px; align-items: flex-start; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; background: var(--tint); border: 1px solid var(--line-strong); border-radius: 999px; font-size: 14px; font-weight: 600; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.hero h1 { font-size: 60px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--blue); }
.lead { font-size: 20px; line-height: 1.6; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.chains { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; padding-top: 8px; }
.chains-label { font-size: 14px; font-weight: 600; margin-right: 4px; }
.chip { padding: 6px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-weight: 500; }

.demo { display: flex; flex-direction: column; gap: 20px; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 40px 80px -40px rgba(40, 70, 200, .35); }
.demo-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.token { display: flex; align-items: center; gap: 12px; }
.token-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--tint); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--blue); }
.token-name { display: flex; flex-direction: column; }
.token-name strong { font-size: 17px; }
.token-name span { font-size: 13px; font-weight: 500; }
.live { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; background: #ECFDF3; border-radius: 999px; font-size: 13px; font-weight: 600; }
.live .dot { background: #16A34A; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field-label { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 12px; font-weight: 600; letter-spacing: .08em; }
.field-value { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; background: var(--field); border: 1px solid var(--line); border-radius: 12px; font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 14px; overflow-wrap: anywhere; }
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding-top: 4px; }
.stat { display: flex; flex-direction: column; gap: 4px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; }
.stat span { font-size: 13px; font-weight: 500; }
.stat strong { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 22px; font-weight: 600; }
.stat strong.accent { color: var(--blue); }
.sync { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; }

/* sections */
.section { padding-block: 104px; background: var(--surface); }
.section-head { display: flex; flex-direction: column; gap: 12px; margin-bottom: 48px; }
.section h2 { font-size: 42px; line-height: 1.3; font-weight: 700; letter-spacing: -.01em; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.step { display: flex; flex-direction: column; gap: 14px; padding: 32px; background: var(--bg); border: 1px solid var(--line); border-radius: 20px; }
.step-no { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 28px; font-weight: 600; color: var(--blue); }
.step h3 { font-size: 22px; font-weight: 700; }
.step p { font-size: 16px; line-height: 1.7; }
#how { border-top: 1px solid var(--line); }

.listing { padding-block: 104px; background: var(--blue); color: #FFFFFF; }
.listing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 64px; align-items: center; }
.listing-copy { display: flex; flex-direction: column; gap: 24px; align-items: flex-start; }
.listing .eyebrow { color: #FFFFFF; }
.listing h2 { font-size: 48px; line-height: 1.25; font-weight: 700; letter-spacing: -.01em; }
.listing p { font-size: 19px; line-height: 1.65; }
.handle-row { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; padding-top: 8px; }
.handle { font-family: "IBM Plex Mono", ui-monospace, Consolas, monospace; font-size: 16px; font-weight: 600; color: #FFFFFF; }
.handle:hover { color: #FFFFFF; text-decoration: underline; }
.services { display: flex; flex-direction: column; gap: 14px; }
.service { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 26px 28px; background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .28); border-radius: 18px; color: #FFFFFF; }
.service:hover { background: rgba(255, 255, 255, .2); color: #FFFFFF; }
.service-name { display: flex; align-items: center; gap: 18px; }
.service-name .mono { font-size: 15px; font-weight: 600; }
.service-name strong { font-size: 22px; }

.faq-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 64px; }
.faq-grid .section-head { margin-bottom: 0; }
.faq-list { grid-column: span 2; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 26px 0; font-size: 20px; font-weight: 700; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary .icon-minus { display: none; }
.faq-list details[open] summary .icon-plus { display: none; }
.faq-list details[open] summary .icon-minus { display: block; }
.faq-list details p { padding-bottom: 26px; margin-top: -12px; font-size: 17px; line-height: 1.7; }

.final { padding-block: 0 104px; background: var(--surface); }
.final-card { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 56px 64px; background: var(--tint); border: 1px solid var(--line-strong); border-radius: 28px; }
.final-card h2 { font-size: 36px; line-height: 1.35; font-weight: 700; }

.site-footer { padding-block: 40px; background: var(--bg); border-top: 1px solid var(--line); }
.site-footer .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-brand { display: flex; flex-direction: column; gap: 12px; font-size: 14px; }
.footer-brand img { height: 26px; width: auto; display: block; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 28px; font-size: 14px; font-weight: 500; }
.footer-links a { color: var(--ink); }
.footer-links a.tg { color: var(--blue); font-weight: 600; }

.mobile-bar { display: none; }

/* tablet */
@media (max-width: 1100px) {
  :root { --pad: 40px; }
  .nav { gap: 22px; }
  .hero h1 { font-size: 44px; }
  .hero-grid, .listing-grid { gap: 40px; }
  .stat strong { font-size: 17px; }
}

/* mobile */
@media (max-width: 960px) {
  :root { --pad: 20px; }
  .nav, .header-actions .btn { display: none; }
  .site-header .wrap { height: 60px; }
  .logo img { height: 24px; }
  .hero { padding-block: 36px 40px; background-size: 20px 20px; }
  .hero-grid, .listing-grid, .steps { grid-template-columns: minmax(0, 1fr); }
  .hero-grid { gap: 30px; }
  .hero-copy { gap: 22px; align-items: stretch; }
  .pill { align-self: flex-start; font-size: 13px; padding: 6px 12px; }
  .hero h1 { font-size: 34px; line-height: 1.28; }
  .lead { font-size: 17px; }
  .cta-row { flex-direction: column; gap: 10px; }
  .btn { height: 54px; font-size: 16px; width: 100%; }
  .chains { padding-top: 0; gap: 8px; }
  .chains-label { display: none; }
  .chip { font-size: 13px; padding: 5px 10px; }
  .demo { padding: 20px; gap: 14px; border-radius: 20px; }
  .token-avatar { width: 34px; height: 34px; }
  .token-name span { display: none; }
  .live { font-size: 12px; padding: 5px 10px; }
  .field-value { padding: 12px; font-size: 12px; }
  .field-value svg { display: none; }
  .stats { display: none; }
  .sync { font-size: 13px; }
  .section, .listing { padding-block: 56px; }
  .section-head { margin-bottom: 24px; gap: 8px; }
  .section h2 { font-size: 28px; }
  .steps { gap: 12px; }
  .step { flex-direction: row; gap: 16px; padding: 20px; border-radius: 16px; }
  .step-no { font-size: 20px; }
  .step h3 { font-size: 18px; margin-bottom: 6px; }
  .step p { font-size: 15px; }
  .listing-copy { gap: 20px; align-items: stretch; }
  .listing h2 { font-size: 30px; line-height: 1.3; }
  .listing p { font-size: 16px; }
  .listing p br { display: none; }
  .handle-row { flex-direction: column; align-items: stretch; gap: 10px; }
  .handle { text-align: center; }
  .services { gap: 10px; }
  .service { padding: 18px 20px; border-radius: 14px; }
  .service-name { gap: 14px; }
  .service-name .mono { font-size: 13px; }
  .service-name strong { font-size: 17px; }
  .faq-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .faq-list { grid-column: auto; }
  .faq-list summary { padding: 20px 0; font-size: 17px; }
  .faq-list details p { padding-bottom: 20px; margin-top: -8px; font-size: 15px; }
  .final { padding-block: 0 56px; }
  .final-card { flex-direction: column; align-items: stretch; gap: 20px; padding: 28px 22px; border-radius: 20px; }
  .final-card h2 { font-size: 24px; }
  .site-footer { padding-block: 32px 110px; }
  .site-footer .wrap { flex-direction: column; align-items: flex-start; }
  .footer-brand img { height: 22px; }
  .footer-links { gap: 10px 18px; }
  .mobile-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: flex; gap: 8px; padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); background: #FFFFFF; border-top: 1px solid var(--line); box-shadow: 0 -8px 24px -12px rgba(10, 13, 20, .2); }
  .mobile-bar .btn { height: 50px; border-radius: 12px; font-size: 15px; box-shadow: none; }
  .mobile-bar .btn-line { flex: 1; }
  .mobile-bar .btn-primary { flex: 1.3; }
}