:root {
  color-scheme: light;
  --ink: #242c3a;
  --muted: #626d80;
  --blue: #477aec;
  --line: #e4e9f2;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; line-height: 1.7; word-break: keep-all; }
a { color: inherit; text-underline-offset: 5px; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
h1, h2, h3, p { margin-top: 0; }
.wrap { max-width: 1120px; margin-inline: auto; padding-inline: 40px; }
.site-header { min-height: 108px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-size: 31px; font-weight: 800; letter-spacing: -1.8px; text-decoration: none; }
.brand span { color: var(--blue); }
nav { display: flex; gap: 28px; font-size: 14px; }
nav a { text-decoration: none; padding-block: 12px; }
.hero { display: grid; grid-template-columns: 1.25fr 1fr; align-items: center; gap: 42px; padding-block: 74px 94px; }
.eyebrow { margin-bottom: 18px; color: var(--blue); font-size: 11px; font-weight: 750; letter-spacing: 2px; }
h1 { margin-bottom: 24px; font-size: clamp(34px, 4vw, 49px); line-height: 1.35; letter-spacing: -2.4px; font-weight: 800; }
.lead { color: var(--muted); font-size: 16px; line-height: 1.95; margin-bottom: 16px; }
.english { color: var(--muted); font-size: 13px; max-width: 360px; margin-bottom: 30px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 52px; padding: 13px 22px; background: var(--blue); border-radius: 12px; color: #fff; text-decoration: none; font-size: 14px; font-weight: 650; }
.button:hover { background: #3468d8; }
.hello-board { min-width: 0; min-height: 360px; border: 1px solid #e0e9ff; border-radius: 30px; background: #f3f7ff; padding: 30px 24px; display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.board-label, .board-note { color: #6d80a2; font-size: 10px; letter-spacing: 1.2px; text-align: center; }
.hello { border-radius: 18px; padding: 15px 20px; font-size: 35px; font-weight: 750; line-height: 1.3; }
.hello span { display: block; margin-bottom: 6px; font-size: 10px; letter-spacing: 1.6px; font-weight: 650; }
.hello-ko { align-self: flex-start; width: 79%; background: #fff; color: #396acb; box-shadow: 0 7px 22px #7395cc12; }
.hello-ko i { float: right; font-style: normal; color: #fdc565; }
.hello-en { align-self: flex-end; width: 77%; color: #fff; background: #719afa; }
.hello-world { align-self: flex-start; padding-block: 7px; font-size: 14px; font-weight: 500; color: #5b7298; }
.hello-world span { font-size: 9px; }
.board-note { margin-top: 4px; letter-spacing: .3px; }
.about { padding-block: 40px 72px; }
.section-heading h2 { font-size: clamp(24px, 3vw, 30px); letter-spacing: -1.2px; line-height: 1.5; margin-bottom: 30px; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.feature { min-width: 0; padding: 28px 24px; border: 1px solid var(--line); border-radius: 18px; }
.feature-number { display: block; color: var(--blue); font-size: 10px; letter-spacing: 1px; font-weight: 700; margin-bottom: 25px; }
.feature h3 { font-size: 19px; letter-spacing: -.6px; margin-bottom: 12px; }
.feature p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
.support { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding-block: 48px 64px; }
.support h2 { font-size: 27px; letter-spacing: -1px; line-height: 1.5; margin-bottom: 14px; }
.support p { font-size: 14px; color: var(--muted); }
.support p span { font-size: 12px; }
.contact { align-self: center; min-width: 0; border-left: 1px solid var(--line); padding: 20px 0 20px 34px; }
.contact-label { display: block; color: var(--muted); font-size: 11px; letter-spacing: 1px; margin-bottom: 10px; }
.email { font-size: 22px; font-weight: 650; overflow-wrap: anywhere; }
.contact p { margin-block: 15px 0; font-size: 12px; }
.site-footer { border-top: 1px solid var(--line); padding-block: 25px 34px; display: flex; justify-content: space-between; gap: 24px; font-size: 11px; color: var(--muted); }
.site-footer > div { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-brand { font-size: 14px; font-weight: 750; color: var(--ink); }
.legal-links a { text-decoration: none; }
.skip-link { position: absolute; top: -100px; left: 16px; background: var(--ink); color: #fff; padding: 10px 16px; z-index: 2; }
.skip-link:focus { top: 12px; }
.not-found { padding-block: 100px; min-height: 65vh; }
@media (max-width: 760px) {
  .wrap { padding-inline: 24px; }
  .site-header { min-height: 90px; }
  .brand { font-size: 27px; }
  nav { gap: 18px; font-size: 12px; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 38px; padding-block: 35px 42px; }
  h1 { font-size: 36px; letter-spacing: -1.8px; }
  .lead { font-size: 15px; }
  .hello-board { min-height: 0; max-width: 430px; width: 100%; justify-self: center; }
  .about { padding-block: 36px; }
  .features { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .feature { padding: 24px; }
  .feature-number { margin-bottom: 14px; }
  .support { grid-template-columns: minmax(0, 1fr); gap: 6px; padding-block: 36px 44px; }
  .contact { border-left: 0; border-top: 1px solid var(--line); padding: 24px 0 0; }
  .email { font-size: 20px; }
  .site-footer { flex-direction: column; gap: 14px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }