:root {
  color-scheme: light only;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172638;
  background: #edf0f3;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  --ink: #172638;
  --muted: #5d6b7b;
  --blue: #2456c7;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
p, h1, h2, h3 { margin: 0; }
.page { max-width: 1280px; margin: 28px auto; padding: 0 44px; background: #fff; border-radius: 24px; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 96px; }
.wordmark { display: inline-flex; align-items: center; font-size: 29px; font-weight: 720; letter-spacing: -1.5px; }
.wordmark > span { font-weight: 430; }
.wordmark-icon { display: block; flex-shrink: 0; width: 40px; height: 35px; margin-right: 9px; }
.section-label { display: flex; align-items: center; gap: 10px; color: var(--blue); font-size: 13px; font-weight: 650; letter-spacing: .02em; }
.label-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }

.hero { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); min-height: 555px; }
.hero-copy { align-self: center; padding: 66px 0 70px 66px; }
.hero h1 { margin-top: 35px; font-size: clamp(42px, 4.25vw, 60px); font-weight: 650; line-height: 1.15; letter-spacing: -.07em; word-break: keep-all; }
.hero h1 span { color: var(--blue); }
.hero-description { max-width: 460px; margin-top: 30px; color: #4c6075; font-size: 17px; line-height: 1.8; word-break: keep-all; }
.route-example { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 46px; padding: 15px 19px; border: 1px solid #d2e2f1; border-radius: 12px; background: #fff; color: #41546b; font-size: 14px; font-weight: 550; }
.route-example span:first-child { color: var(--blue); font-weight: 700; }
.route-arrow { color: #8599ad; font-size: 20px; line-height: 1; }
.hero-visual { display: flex; align-items: center; justify-content: center; min-width: 0; overflow: hidden; }
.hero-visual img { display: block; width: 118%; max-width: none; height: auto; border-radius: 24px; }

.link-check { display: grid; grid-template-columns: 56px minmax(0, 1fr) auto; align-items: center; gap: 28px; padding: 92px 24px 0; }
.check-symbol { display: grid; place-items: center; width: 56px; height: 56px; color: var(--blue); }
.check-symbol svg { width: 43px; height: 43px; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.check-copy h2 { font-size: 29px; font-weight: 630; line-height: 1.35; letter-spacing: -.04em; word-break: keep-all; }
.check-copy > p:last-child { max-width: 560px; margin-top: 9px; color: var(--muted); font-size: 15px; line-height: 1.7; word-break: keep-all; }
.checker-link { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 20px; border: 1px solid #b7ccec; border-radius: 10px; background: #fff; color: var(--blue); font-size: 15px; font-weight: 650; white-space: nowrap; }
.checker-link:hover { border-color: #8cafe5; background: #f5f9ff; }

.how { padding: 88px 24px 112px; }
.section-description { max-width: 760px; margin-top: 20px; color: var(--muted); font-size: 16px; line-height: 1.8; word-break: keep-all; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 34px; margin-top: 62px; }
.step { min-width: 0; min-height: 205px; padding-top: 23px; border-top: 1px solid #cbd6e2; }
.step-number { color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: .07em; }
.step h3 { margin-top: 43px; font-size: 22px; font-weight: 630; letter-spacing: -.035em; }
.step p { max-width: 270px; margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.75; word-break: keep-all; }

.notice { margin-bottom: 64px; padding: 0 24px 64px; }
.notice > p { max-width: 760px; margin-top: 20px; color: var(--muted); font-size: 16px; line-height: 1.8; word-break: keep-all; }
.site-footer { display: flex; align-items: center; gap: 24px; min-height: 86px; border-top: 1px solid #e8eaee; color: var(--muted); font-size: 12px; }
.footer-brand { font-size: 17px; font-weight: 650; color: var(--ink); letter-spacing: -.8px; }

@media (max-width: 1340px) {
  .page { margin: 20px; padding: 0 36px; }
}
@media (max-width: 1050px) {
  .hero { min-height: 500px; }
  .hero-copy { padding-left: 44px; }
  .hero h1 { font-size: clamp(40px, 4.25vw, 48px); }
  .route-example { margin-top: 32px; }
  .link-check { grid-template-columns: 56px minmax(0, 1fr); }
  .link-check .checker-link { grid-column: 2; justify-self: start; }
  .notice { padding: 0 24px 60px; }
}
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding: 58px 50px 28px; }
  .hero-visual { height: auto; padding: 0 48px 40px; }
  .hero-visual img { width: min(100%, 540px); }
  .how { padding: 78px 14px 90px; }
  .steps { gap: 24px; }
}
@media (max-width: 650px) {
  :root { background: #fff; }
  .page { margin: 0 auto; padding: 0 20px; border-radius: 0; }
  .site-header { min-height: 82px; }
  .wordmark { font-size: 26px; }
  .wordmark-icon { width: 34px; height: 30px; margin-right: 7px; }
  .hero { min-height: 0; }
  .hero-copy { padding: 44px 28px 20px; }
  .hero h1 { margin-top: 27px; font-size: clamp(34px, 7.6vw, 44px); }
  .hero-description { margin-top: 24px; font-size: 16px; }
  .route-example { margin-top: 30px; padding: 12px 14px; font-size: 12px; }
  .hero-visual { height: 270px; padding: 0; border-radius: 18px; }
  .hero-visual img { width: min(105%, 460px); border-radius: 18px; }
  .link-check { grid-template-columns: 1fr; gap: 14px; padding: 68px 8px 0; }
  .check-symbol { width: 48px; height: 48px; }
  .check-symbol svg { width: 38px; height: 38px; }
  .check-copy h2 { font-size: 23px; }
  .link-check .checker-link { grid-column: 1; margin-top: 8px; }
  .how { padding: 72px 8px 82px; }
  .section-description { font-size: 15px; }
  .steps { grid-template-columns: 1fr; gap: 28px; margin-top: 46px; }
  .step { min-height: 0; padding-top: 20px; }
  .step h3 { margin-top: 23px; font-size: 21px; }
  .step p { max-width: none; }
  .notice { margin-bottom: 40px; padding: 0 8px 44px; }
  .notice > p { font-size: 15px; }
  .site-footer { flex-wrap: wrap; gap: 10px 18px; min-height: 90px; padding: 18px 0; }
}
@media (max-width: 360px) {
  .page { padding: 0 15px; }
  .hero-copy { padding: 38px 22px 20px; }
  .hero h1 { font-size: 32px; }
  .hero-visual { height: 230px; }
  .link-check { padding: 60px 8px 0; }
  .notice { padding: 0 8px 40px; }
}
@media (min-width: 801px) {
  .hero { min-height: 440px; }
  .hero-copy { padding-top: 40px; padding-bottom: 40px; }
  .hero h1 { margin-top: 0; }
  .route-example { margin-top: 32px; }
  .hero-visual img { width: auto; max-width: 100%; height: auto; max-height: 440px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}