:root {
  --green-900: #193b38;
  --green-700: #244e4c;
  --bg: #f7f7f2;
  --ink: #233532;
  --muted: #63716d;
  --line: #e1e5df;
  --accent: #bd4428;
  --accent-hover: #a53820;
  --focus: #196d89;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--ink);
  font-synthesis: none;
  -webkit-text-size-adjust: 100%;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; background: var(--bg); line-height: 1.75; letter-spacing: -0.02em; }
h1, h2, p, dl, dd { margin: 0; }
a { color: var(--green-700); text-underline-offset: 0.25em; }
::selection { background: var(--green-900); color: var(--bg); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
.page { max-width: 1200px; min-height: 100svh; margin-inline: auto; padding: 0 52px; display: flex; flex-direction: column; }
.skip-link { position: absolute; top: 12px; left: 16px; padding: 10px 18px; background: var(--bg); transform: translateY(-180%); z-index: 1; }
.skip-link:focus { transform: none; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 106px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; font-size: 28px; font-weight: 800; letter-spacing: -0.04em; color: var(--green-900); text-decoration: none; }
.brand:hover { color: var(--green-700); }
.brand-mark, .brand-dot { color: var(--accent); }
.service-state { color: var(--muted); font-size: 14px; }
main { flex: 1; }
.introduction { display: grid; grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr); gap: 88px; padding: 90px 0 76px; align-items: start; }
h1 { color: var(--green-900); font-size: clamp(36px, 4.4vw, 60px); line-height: 1.3; font-weight: 750; letter-spacing: -0.04em; word-break: keep-all; text-wrap: balance; }
.lead { max-width: 38em; margin-top: 26px; font-size: 18px; word-break: keep-all; }
.primary-link { display: inline-flex; align-items: center; gap: 16px; min-height: 52px; margin-top: 32px; padding: 12px 20px; border-radius: 10px; background: var(--accent); color: white; font-size: 16px; font-weight: 650; text-decoration: none; transition: background-color 160ms ease-out; }
.primary-link:hover { background: var(--accent-hover); }
.primary-link:active { background: var(--green-900); }
.primary-link svg { flex: 0 0 auto; }
.test-note { max-width: 38em; margin-top: 14px; font-size: 13px; color: var(--muted); word-break: keep-all; }
.preparation { padding-top: 8px; }
.preparation h2 { color: var(--green-700); font-size: 27px; line-height: 1.5; font-weight: 650; letter-spacing: -0.03em; word-break: keep-all; }
.preparation p { margin-top: 20px; font-size: 15px; word-break: keep-all; }
.preparation p + p { color: var(--muted); font-size: 14px; }
.service-description { padding: 0 0 52px; }
.service-description h2 { font-size: 19px; font-weight: 650; padding-bottom: 20px; }
.features { border-top: 1px solid var(--line); }
.features > div { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 36px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.features dt { color: var(--green-700); font-size: 16px; font-weight: 650; }
.features dd { font-size: 15px; max-width: 68ch; word-break: keep-all; }
.footer { display: flex; align-items: end; justify-content: space-between; gap: 30px; padding: 28px 0 32px; color: var(--muted); font-size: 12px; }
.footer span { white-space: nowrap; }
.mobile-break { display: none; }

@media (max-width: 850px) {
  .page { padding-inline: 32px; }
  .introduction { gap: 44px; padding-block: 64px; }
  .preparation h2 { font-size: 23px; }
  .features > div { grid-template-columns: 190px minmax(0, 1fr); gap: 28px; }
}

@media (max-width: 620px) {
  .page { padding-inline: 24px; }
  .header { min-height: 90px; gap: 18px; }
  .brand { font-size: 26px; }
  .brand-mark { width: 24px; height: 24px; }
  .service-state { max-width: 7.5em; text-align: right; font-size: 12px; line-height: 1.6; word-break: keep-all; }
  .introduction { grid-template-columns: minmax(0, 1fr); gap: 42px; padding: 46px 0 44px; }
  h1 { font-size: clamp(30px, 8.8vw, 42px); }
  .lead { margin-top: 20px; font-size: 16px; }
  .primary-link { margin-top: 26px; font-size: 15px; }
  .test-note { font-size: 12px; }
  .preparation { padding: 28px 0 0; border-top: 1px solid var(--line); }
  .preparation h2 { font-size: 22px; }
  .preparation h2 br { display: none; }
  .preparation p { margin-top: 14px; }
  .service-description { padding-bottom: 12px; }
  .service-description h2 { font-size: 18px; padding-bottom: 18px; }
  .features > div { grid-template-columns: minmax(0, 1fr); gap: 8px; padding-block: 20px; }
  .features dd { font-size: 14px; }
  .footer { flex-direction: column; align-items: start; gap: 18px; padding-block: 28px; }
  .mobile-break { display: initial; }
}

@media (prefers-reduced-motion: reduce) {
  .primary-link { transition: none; }
}