:root {
  color-scheme: light;
  --ink: #26372c;
  --muted: #607066;
  --green: #82bd3f;
  --mint: #dff3e3;
  --cream: #fffbf2;
  --line: #d8e4d8;
  --white: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  line-height: 1.7;
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 36px;
}

.language-switch {
  display: block;
  width: fit-content;
  margin: 0 0 10px auto;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .72);
  font-size: .82rem;
  text-decoration: none;
}
.hero { text-align: center; padding: 28px 12px 44px; }
.eyebrow { margin: 12px 0 4px; color: #5c8d2d; font-size: .78rem; font-weight: 800; letter-spacing: .16em; }
h1 { margin: 0; font-size: clamp(2.25rem, 8vw, 4rem); line-height: 1.12; letter-spacing: -.045em; }
h1 small { font-size: .48em; font-weight: 650; letter-spacing: -.02em; }
.lead { max-width: 560px; margin: 22px auto 0; color: var(--muted); font-size: 1.06rem; }

.mark {
  display: grid;
  grid-template-columns: repeat(2, 30px);
  grid-template-rows: repeat(2, 30px);
  justify-content: center;
  gap: 4px;
}
.mark span { display: block; border-radius: 7px; background: var(--green); box-shadow: inset 0 -3px 0 #6ca42f; }
.mark span:first-child { grid-column: 1 / 3; width: 30px; justify-self: center; }

.card {
  margin: 16px 0;
  padding: clamp(22px, 5vw, 36px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: color-mix(in srgb, var(--white) 92%, var(--mint));
  box-shadow: 0 8px 24px rgba(38, 55, 44, .06);
}

h2 { margin: 0 0 12px; font-size: 1.35rem; }
h3 { margin: 30px 0 8px; font-size: 1.08rem; }
p { margin: 8px 0; }
ul { padding-left: 22px; }
a { color: #39701f; font-weight: 700; text-underline-offset: 3px; }
.links { display: grid; gap: 8px; }
.links h2 { margin-bottom: 4px; }

.introduction { position: relative; overflow: hidden; }
.introduction::after {
  content: "";
  position: absolute;
  width: 150px;
  height: 150px;
  right: -64px;
  bottom: -76px;
  border-radius: 36px;
  background: var(--mint);
  transform: rotate(18deg);
  z-index: 0;
}
.introduction > * { position: relative; z-index: 1; }
.introduction .eyebrow { margin: 0 0 4px; }
.introduction h2 { font-size: clamp(1.45rem, 5vw, 1.9rem); }
.introduction p:not(.eyebrow) { max-width: 650px; color: var(--muted); }
.introduction p + p { margin-top: 16px; }

.section-heading { margin: 10px 4px 14px; }
.section-heading .eyebrow { margin-bottom: 2px; }
.section-heading h2 { margin: 0; font-size: 1.65rem; }

.series-card {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: clamp(20px, 5vw, 36px);
  align-items: center;
  margin: 0 0 24px;
  padding: clamp(24px, 6vw, 42px);
  color: inherit;
  text-decoration: none;
  border: 1px solid #cfe0ca;
  border-radius: 28px;
  background: linear-gradient(135deg, #f5fff1, #e4f4df);
  box-shadow: 0 10px 30px rgba(38, 55, 44, .08);
  transition: transform .18s ease, box-shadow .18s ease;
}
.series-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(38, 55, 44, .12); }
.series-copy h3 { margin: 2px 0 8px; font-size: clamp(1.55rem, 5vw, 2.1rem); }
.series-copy p { color: var(--muted); }
.series-label { margin: 0 !important; color: #5c8d2d !important; font-size: .82rem; font-weight: 800; }
.series-link { display: inline-block; margin-top: 10px; color: #39701f; font-weight: 800; }

.series-icon {
  display: grid;
  grid-template-columns: repeat(3, 30px);
  grid-template-rows: repeat(2, 30px);
  gap: 5px;
  justify-content: center;
}
.series-icon span { border-radius: 7px; background: #74b6e8; box-shadow: inset 0 -3px 0 #5799cb; }
.series-icon span:first-child { grid-column: 2; }
.series-icon span:nth-child(2) { grid-row: 2; grid-column: 1; }
.series-icon span:nth-child(3) { grid-row: 2; grid-column: 2; }
.series-icon span:nth-child(4) { grid-row: 2; grid-column: 3; }
.series-app-icon {
  display: block;
  width: 96px;
  height: 96px;
  justify-self: center;
  border-radius: 25%;
  box-shadow: 0 8px 20px rgba(38, 55, 44, .14);
}
.series-icon-large { grid-template-columns: repeat(3, 36px); grid-template-rows: repeat(2, 36px); gap: 6px; }
.product-hero {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 24px;
  align-items: center;
  padding: 8px 12px 32px;
  text-align: left;
}
.product-hero .lead { margin: 14px 0 0; }
.product-app-icon {
  display: block;
  width: 112px;
  height: 112px;
  border-radius: 25%;
  box-shadow: 0 12px 28px rgba(38, 55, 44, .16);
}

.product-feature {
  margin: 0 0 20px;
  overflow: hidden;
  border: 1px solid #cfe0ca;
  border-radius: 28px;
  background: var(--mint);
  box-shadow: 0 12px 32px rgba(38, 55, 44, .1);
}
.product-feature img { display: block; width: 100%; height: auto; }

.product-introduction { display: grid; gap: 28px; }
.product-introduction .eyebrow { margin-top: 0; }
.product-introduction h2 { font-size: clamp(1.45rem, 5vw, 1.9rem); }
.product-introduction > div > p:last-child { color: var(--muted); }
.product-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0;
}
.product-facts div {
  padding: 16px 8px;
  border-radius: 16px;
  background: var(--mint);
  text-align: center;
}
.product-facts dt { color: #39701f; font-size: 1.7rem; font-weight: 850; line-height: 1.15; }
.product-facts dd { margin: 4px 0 0; color: var(--muted); font-size: .8rem; line-height: 1.35; }

.product-gallery-section { margin: 34px 0 30px; }
.product-gallery-section .section-heading p:last-child { margin-top: 6px; color: var(--muted); }
.product-gallery {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 290px;
  gap: 16px;
  margin: 0;
  padding: 4px 2px 22px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-snap-type: inline mandatory;
  scrollbar-color: #a8c99a transparent;
}
.product-gallery:focus-visible { outline: 3px solid rgba(92, 141, 45, .35); outline-offset: 4px; }
.screenshot-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(38, 55, 44, .08);
  scroll-snap-align: start;
}
.screenshot-card img { display: block; width: 100%; height: auto; background: #eef6ec; }
.screenshot-card figcaption { display: grid; gap: 3px; padding: 16px 18px 18px; line-height: 1.45; }
.screenshot-card figcaption strong { color: var(--ink); font-size: 1rem; }
.screenshot-card figcaption span { color: var(--muted); font-size: .88rem; }

.policy-header { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.policy-header h1 { font-size: clamp(2rem, 7vw, 3.2rem); }
.meta { color: var(--muted); font-size: .92rem; }
.notice { margin: 18px 0; padding: 14px 16px; border-radius: 14px; background: var(--mint); }
.back { display: inline-block; margin-bottom: 18px; }

footer { padding: 20px 16px 40px; color: var(--muted); text-align: center; font-size: .85rem; }

@media (max-width: 480px) {
  .shell { width: min(100% - 20px, 760px); padding-top: 28px; }
  .hero { padding-bottom: 28px; }
  .card { border-radius: 18px; }
  .series-card { grid-template-columns: 1fr; text-align: center; border-radius: 20px; }
  .product-hero { grid-template-columns: 82px 1fr; gap: 16px; padding-inline: 6px; }
  .product-app-icon { width: 82px; height: 82px; }
  .product-hero h1 { font-size: clamp(2rem, 11vw, 3rem); }
  .product-hero .lead { font-size: .94rem; }
  .product-feature { border-radius: 18px; }
  .product-facts { gap: 6px; }
  .product-facts div { padding: 13px 4px; }
  .product-facts dt { font-size: 1.45rem; }
  .product-gallery { grid-auto-columns: min(78vw, 290px); }
}