/* 루퍼랩스 브랜드 사이트 — 상단 배너(assets/hero.webp)의 밤하늘이 페이지 아래로 이어진다.
   배경 색은 배너에서 뽑았다: 하늘 위 #14326c, 지붕 #313c71. 배너를 바꾸면 이 두 값도 맞춘다. */
:root {
  --sky-top: #14326c;
  --roof: #313c71;
  --deep: #1d2556;
  --deeper: #121838;
  --chalk: #f3eedf;
  --text: #dde1f0;
  --muted: #a3abcc;
  --line: rgba(243, 238, 223, .14);
  --panel: rgba(255, 255, 255, .055);
  --star: #ffe08f;
  --display: "Gowun Batang", "AppleMyungjo", serif;
  --body: "IBM Plex Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
  --gutter: clamp(16px, 5vw, 64px);
  --wrap: 1180px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--deeper); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: linear-gradient(180deg, var(--sky-top) 0, var(--roof) min(37.5vw, 760px), var(--deep) calc(min(37.5vw, 760px) + 700px), var(--deeper) 100%);
  color: var(--text);
  font: 400 16px/1.7 var(--body);
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--star); outline-offset: 3px; border-radius: 6px; }
img { display: block; }

/* 상단: 배너 위에 겹친다 */
.top {
  position: absolute; inset: 0 0 auto; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gutter);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--chalk); font: 700 19px/1 var(--display); }
.brand-mark { width: 30px; height: 23px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.brand-mark .spark { fill: var(--star); stroke: none; }
.top-nav { display: flex; gap: 24px; font-size: 15px; }
.top-nav a { color: var(--text); text-decoration: none; opacity: .8; }
.top-nav a:hover { opacity: 1; }

/* 배너 */
.hero { position: relative; }
.banner {
  width: 100%; height: auto; max-height: 760px; object-fit: cover; object-position: 30% 100%;
  /* 아래 가장자리를 배경 그라데이션으로 녹인다 */
  -webkit-mask-image: linear-gradient(180deg, #000 82%, transparent);
          mask-image: linear-gradient(180deg, #000 82%, transparent);
}
.hero-copy { max-width: var(--wrap); margin: clamp(-40px, -3vw, -8px) auto 0; padding: 0 var(--gutter); position: relative; }
.hero h1 { margin: 0; max-width: 16em; color: var(--chalk); font: 400 clamp(28px, 4.2vw, 52px)/1.3 var(--display); letter-spacing: -0.01em; text-wrap: balance; }
.lede { margin: 14px 0 0; max-width: 34em; color: var(--muted); font-size: clamp(15px, 1.5vw, 18px); }

/* 앱 */
.apps { max-width: var(--wrap); margin: 0 auto; padding: clamp(48px, 7vw, 88px) var(--gutter) clamp(64px, 9vw, 112px); }
.group + .group { margin-top: clamp(40px, 5vw, 64px); }
.group h2 { margin: 0 0 18px; color: var(--chalk); font: 700 clamp(19px, 2vw, 23px)/1.4 var(--display); }
.grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.grid-live { grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr)); }
.grid-soon { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }

.card {
  position: relative; overflow: hidden;
  display: flex; gap: 20px; align-items: stretch;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  scroll-margin-top: 24px;
}
/* 카드 모서리에 앱 색 빛이 번진다 */
.card::before {
  content: ""; position: absolute; width: 220px; height: 220px; left: -60px; top: -80px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--glow) 60%, transparent), transparent 70%);
  opacity: .55; pointer-events: none;
}
.card > * { position: relative; }
.icon { flex: none; width: 80px; height: 80px; border-radius: 20px; box-shadow: 0 0 0 1px var(--line), 0 10px 28px rgba(5, 10, 35, .45); }
.card-body { min-width: 0; flex: 1; display: flex; flex-direction: column; }
.icon { align-self: flex-start; }
.card h3 { margin: 0; color: var(--chalk); font: 700 clamp(18px, 1.8vw, 21px)/1.35 var(--display); }
.meta { margin: 2px 0 0; color: var(--muted); font-size: 13.5px; }
.tagline { margin: 8px 0 0; }
.links { margin: auto 0 0; padding-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px;
  border-radius: 999px; border: 1px solid var(--line);
  font-size: 14px; font-weight: 500; text-decoration: none; white-space: nowrap;
  color: var(--text);
}
.btn:hover { border-color: var(--chalk); color: var(--chalk); }
.btn-main { background: var(--chalk); border-color: var(--chalk); color: #1b2350; }
.btn-main:hover { background: #fff; color: #1b2350; }

/* 준비 중 카드는 작게 */
.grid-soon .card { padding: 20px; gap: 16px; }
.grid-soon .icon { width: 60px; height: 60px; border-radius: 15px; }
.grid-soon .card::before { opacity: .3; }
.grid-soon .tagline { font-size: 14.5px; color: var(--muted); }
.grid-soon .links { padding-top: 12px; }

/* 푸터 */
.foot { max-width: var(--wrap); margin: 0 auto; padding: clamp(44px, 6vw, 72px) var(--gutter) 36px; border-top: 1px solid var(--line); }
.foot-title { margin: 0 0 6px; color: var(--chalk); font: 700 21px/1.3 var(--display); }
.foot p { margin: 0; color: var(--muted); }
.mail { display: inline-block; margin-top: 10px; color: var(--chalk); font: 400 clamp(20px, 2.6vw, 27px)/1.3 var(--display); text-underline-offset: 7px; text-decoration-thickness: 1px; }
.copy { margin-top: 44px !important; font-size: 13px; }

@media (max-width: 640px) {
  .banner { aspect-ratio: 4 / 3; object-position: 22% 100%; }
  .top-nav { gap: 16px; font-size: 14px; }
  .hero-copy { margin-top: -20px; }
  .card { padding: 18px; gap: 14px; }
  .icon { width: 60px; height: 60px; border-radius: 15px; }
  .grid-soon .icon { width: 52px; height: 52px; border-radius: 13px; }
}