/* PRND 웹 공통 스타일 — 토큰은 앱 SPEC §3(Relay RS Tokens)과 같다. */

@font-face {
  font-family: "Michroma";
  src: url("../fonts/Michroma-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

:root {
  --bg: #0A0B0D;
  --surface: #16171A;
  --field: #1C1D20;
  --divider: #24262A;
  --text: #F2F2F0;
  --text-2: #8A8D93;
  --text-3: #55585E;
  --cream: #E8DFCC;
  --brake: #C8282D;
  --font: "Pretendard Variable", "Apple SD Gothic Neo", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Michroma", var(--font);
  --frame: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body {
  margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); -webkit-font-smoothing: antialiased;
}
body { min-height: 100vh; line-height: 1.6; word-break: keep-all; overflow-wrap: break-word; }
html { background: radial-gradient(120% 80% at 50% 0%, #17191D 0%, var(--bg) 60%) fixed, var(--bg); }
body { background: transparent; }

/* 배경 도로(assets/js/road.js가 그린다) — 아주 옅게 */
.road-bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; opacity: 0.6; }
.doc-page .road-bg { opacity: 0.35; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
::selection { background: var(--cream); color: var(--bg); }

.frame { max-width: var(--frame); margin: 0 auto; padding: 0 40px; }

/* ── 상단 헤더(link.nugabox.com과 같은 방식) ──
   맨 위에서는 화면 전체 너비에 배경 없이 펴져 있고, 내려가면 가운데 알약으로 줄어든다.
   상태는 assets/js/site.js가 .is-shrunk 클래스 하나로만 알린다. */
.header-sentinel { height: 1px; margin-bottom: -1px; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  width: 100%; max-width: 100%; margin: 0 auto; padding: 0;
  transition: max-width 0.42s cubic-bezier(0.22, 0.61, 0.36, 1), padding 0.42s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.header-bar {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px;
  padding: 20px 32px; border-radius: 0;
  border: 1px solid rgba(255, 255, 255, 0);
  /* 색은 두고 투명도만 0 → 전환 중간 프레임이 깨끗하다 */
  background-color: rgba(22, 23, 26, 0);
  -webkit-backdrop-filter: blur(0px); backdrop-filter: blur(0px);
  transition: padding 0.42s cubic-bezier(0.22, 0.61, 0.36, 1), border-radius 0.42s cubic-bezier(0.22, 0.61, 0.36, 1),
              background-color 0.42s ease, border-color 0.42s ease, backdrop-filter 0.42s ease, box-shadow 0.42s ease;
}
.site-header.is-shrunk { max-width: 1184px; padding: 12px; }
.site-header.is-shrunk .header-bar {
  padding: 10px 12px 10px 24px; border-radius: 999px;
  border-color: rgba(255, 255, 255, 0.08);
  background-color: rgba(22, 23, 26, 0.72);
  -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.header-logo { justify-self: start; display: inline-flex; align-items: center; text-decoration: none; }
.header-logo img { height: 20px; width: auto; transition: height 0.42s cubic-bezier(0.22, 0.61, 0.36, 1); }
.site-header.is-shrunk .header-logo img { height: 17px; }
.header-nav { display: flex; gap: 32px; }
.header-nav a, .header-link {
  color: var(--text-2); text-decoration: none; font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: color 0.2s;
}
.header-nav a:hover, .header-link:hover { color: var(--text); }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 16px; }
.header-cta {
  display: inline-flex; align-items: center; height: 38px; padding: 0 16px; border-radius: 999px;
  background: var(--cream); color: var(--bg); font-size: 14px; font-weight: 700; white-space: nowrap; cursor: default;
}
section[id] { scroll-margin-top: 84px; }
@media (prefers-reduced-motion: reduce) { .site-header, .header-bar, .header-logo img { transition: none; } }

/* ── 버튼 ── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 52px; padding: 0 22px; border-radius: 16px;
  font-size: 15px; font-weight: 600; text-decoration: none; white-space: nowrap;
}
/* 앱의 Hero CTA: 검정 70% 면 + 위→아래 그라디언트 테두리(1.5pt) */
.btn-hero {
  color: var(--text);
  border: 1.5px solid transparent;
  background:
    linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)) padding-box,
    linear-gradient(180deg, var(--text), var(--text-3)) border-box;
}
.btn-quiet { color: var(--text); background: var(--surface); }
.btn-quiet:hover { background: var(--field); }
.btn[aria-disabled="true"] { cursor: default; }
.btn svg { width: 18px; height: 18px; flex: none; }

/* ── 공통 섹션 ── */
section { padding: 112px 0; border-top: 1px solid var(--divider); }
.eyebrow {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 0.18em;
  color: var(--cream); text-transform: uppercase; margin: 0 0 18px;
}
.section-title {
  margin: 0 0 16px; font-size: clamp(30px, 4vw, 44px); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.2;
}
.section-lead { margin: 0; max-width: 620px; color: var(--text-2); font-size: 17px; }

/* ── 히어로 ── */
.hero { padding: 96px 0 112px; border-top: 0; overflow: hidden; }
.hero .frame { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero h1 {
  margin: 0 0 22px; font-size: clamp(34px, 4.6vw, 58px); font-weight: 800;
  letter-spacing: -0.04em; line-height: 1.08;
}
.hero h1 .dim { color: var(--text-3); }
.hero p.lead { margin: 0 0 36px; max-width: 560px; color: var(--text-2); font-size: 18px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .note { margin: 18px 0 0; font-size: 13px; color: var(--text-3); }
.hero-visual { position: relative; display: flex; justify-content: center; }
/* 화면 캡처는 배경 이미지로 — 끌어서 이미지 파일을 가져갈 수 없게 */
.hero-visual::before {
  content: ""; position: absolute; inset: 10% -30% auto; height: 70%;
  background: radial-gradient(closest-side, rgba(232, 223, 204, 0.10), transparent);
  pointer-events: none;
}

/* 폰 프레임 — 스크린샷은 393×852 (iPhone 17 Pro 논리 해상도) */
.phone {
  position: relative; width: 300px; aspect-ratio: 393 / 852;
  border-radius: 48px; padding: 9px; background: #1A1B1E;
  box-shadow: 0 0 0 1px #2C2E33, 0 40px 80px rgba(0, 0, 0, 0.6);
}
/* 화면 캡처는 배경 이미지로 — 끌어서 이미지 파일을 가져갈 수 없게 */
.phone .shot {
  width: 100%; height: 100%; border-radius: 40px;
  background-color: var(--bg); background-position: top center; background-size: cover; background-repeat: no-repeat;
}

/* ── 기능 ── */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  margin-top: 56px; background: rgba(36, 38, 42, 0.8);
  border: 1px solid var(--divider); border-radius: 24px; overflow: hidden;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.feature { background: rgba(10, 11, 13, 0.82); padding: 34px 30px 36px; }
.feature .icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--surface);
  display: grid; place-items: center; margin-bottom: 22px; color: var(--cream);
}
.feature .icon svg { width: 22px; height: 22px; }
.feature h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.feature p { margin: 0; color: var(--text-2); font-size: 15px; }
.tag {
  display: inline-block; margin-left: 6px; padding: 1px 7px; border-radius: 6px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em; vertical-align: 2px;
  color: var(--bg); background: var(--cream);
}

/* ── 화면 슬라이더: 천천히 흐르는 띠. 가운데 최대 3장(태블릿 2, 모바일 1), 양옆은 걸치고 끝은 흐리게 ── */
.slider {
  container-type: inline-size; margin-top: 56px; padding: 24px 0 8px; overflow: hidden;
  touch-action: pan-y; cursor: grab; -webkit-user-select: none; user-select: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.slider.dragging { cursor: grabbing; }
.slider-track {
  --per: 3; --gap: 28px;
  --visible: min(1000px, calc(100cqw - 200px));
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: var(--gap); width: max-content; will-change: transform;
}
.slide { flex: 0 0 calc((var(--visible) - (var(--per) - 1) * var(--gap)) / var(--per)); }
.slide .phone {
  width: 100%;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.slide p { margin: 18px 0 0; text-align: center; font-size: 14px; color: var(--text-2); transition: color 0.6s; }
@media (hover: hover) {
  .slide:hover .phone {
    transform: translateY(-10px) scale(1.025);
    box-shadow: 0 0 0 1px #3A3C42, 0 56px 100px rgba(0, 0, 0, 0.7);
  }
  .slide:hover p { color: var(--text); }
}

/* ── 마무리 CTA ── */
.outro { text-align: center; padding: 128px 0 136px; }
.outro .frame { display: flex; flex-direction: column; align-items: center; }
.outro img { width: auto; height: 30px; margin-bottom: 32px; }
.outro .section-title { margin-bottom: 32px; }
.outro .note { margin: 18px 0 0; font-size: 13px; color: var(--text-3); }

/* ── 요금 ── */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 56px; }
.plan { padding: 32px; border-radius: 24px; background: var(--surface); }
.plan.pro {
  border: 1.5px solid transparent;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(180deg, var(--cream), var(--divider)) border-box;
}
.plan h3 { margin: 0 0 4px; font-family: var(--font-display); font-size: 18px; font-weight: 400; letter-spacing: 0.08em; }
.plan .sub { margin: 0 0 22px; color: var(--text-2); font-size: 14px; }
.plan ul { margin: 0; padding: 0; list-style: none; }
.plan li { position: relative; padding: 9px 0 9px 26px; border-top: 1px solid var(--divider); font-size: 15px; color: var(--text); }
.plan li::before {
  content: ""; position: absolute; left: 2px; top: 16px; width: 10px; height: 6px;
  border-left: 1.5px solid var(--cream); border-bottom: 1.5px solid var(--cream); transform: rotate(-45deg);
}
.fine { margin-top: 18px; font-size: 13px; color: var(--text-3); }

/* ── 푸터 ── */
footer.site { padding: 40px 0 56px; border-top: 1px solid var(--divider); color: var(--text-3); font-size: 13px; }
footer.site .frame { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; }
footer.site nav { display: flex; gap: 22px; }
footer.site a { color: var(--text-2); text-decoration: none; }
footer.site a:hover { color: var(--text); }
footer.site p { margin: 0; }

/* ── 법적 문서(개인정보처리방침·약관) ── */
.doc { padding: 72px 0 112px; }
.doc-wrap { max-width: 760px; margin: 0 auto; }
.doc-head { margin-bottom: 40px; padding-bottom: 28px; border-bottom: 1px solid var(--divider); }
.doc-head .eyebrow { margin-bottom: 14px; }
.doc-head h1 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 40px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.15; }
.doc-head .meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--text-3); }
.doc-head .meta b { color: var(--text-2); font-weight: 500; }
.doc .intro {
  margin: 0 0 36px; padding: 20px 22px; border-radius: 14px; background: var(--surface);
  font-size: 15px; color: var(--text-2); line-height: 1.75;
}
.doc .intro strong { color: var(--text); }
.toc { margin: 0 0 56px; padding: 22px 24px; border-radius: 14px; border: 1px solid var(--divider); }
.toc h2 { margin: 0 0 12px; font-size: 11px; font-weight: 700; color: var(--text-3); letter-spacing: 0.12em; text-transform: uppercase; }
.toc ol { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 24px; counter-reset: toc; }
.toc li { counter-increment: toc; font-size: 14px; }
.toc a { display: flex; gap: 10px; padding: 4px 0; color: var(--text-2); text-decoration: none; }
.toc a:hover { color: var(--text); }
.toc a::before { content: counter(toc, decimal-leading-zero); min-width: 22px; font-size: 11px; font-weight: 600; color: var(--text-3); font-variant-numeric: tabular-nums; padding-top: 2px; }
.policy { margin-bottom: 52px; padding: 0; border-top: 0; scroll-margin-top: 96px; }
.policy h2 { margin: 0 0 14px; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; display: flex; gap: 12px; align-items: baseline; }
.policy h2 .num { font-size: 11px; font-weight: 700; color: var(--text-3); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.policy h3 { margin: 24px 0 8px; font-size: 15px; font-weight: 600; }
.policy p, .policy li { font-size: 15px; color: var(--text-2); line-height: 1.75; }
.policy p { margin: 0 0 12px; }
.policy ul, .policy ol { margin: 0 0 12px; padding-left: 22px; }
.policy li { margin-bottom: 4px; }
.policy li::marker { color: var(--text-3); }
.policy strong { color: var(--text); font-weight: 600; }
.policy a { color: var(--cream); text-decoration: none; }
.policy a:hover { text-decoration: underline; }
.policy .small { font-size: 13px; color: var(--text-3); }
.tbl-wrap { overflow-x: auto; margin: 12px 0 16px; }
table.tbl { width: 100%; min-width: 560px; border-collapse: separate; border-spacing: 0; border: 1px solid var(--divider); border-radius: 12px; overflow: hidden; font-size: 14px; }
table.tbl th, table.tbl td { padding: 11px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--divider); }
table.tbl th { background: var(--surface); color: var(--text-2); font-size: 12.5px; font-weight: 600; }
table.tbl td { color: var(--text-2); line-height: 1.6; }
table.tbl td:first-child { color: var(--text); font-weight: 500; white-space: nowrap; }
table.tbl tbody tr:last-child td { border-bottom: 0; }
.contact-box { margin: 16px 0; padding: 20px 22px; border-radius: 14px; background: var(--surface); }
.contact-box dl { margin: 0; display: grid; grid-template-columns: 90px 1fr; row-gap: 8px; font-size: 15px; }
.contact-box dt { color: var(--text-3); }
.contact-box dd { margin: 0; color: var(--text); }

/* ── 반응형 ── */
@media (max-width: 960px) {
  .hero .frame { grid-template-columns: 1fr; text-align: left; }
  .hero-visual { margin-top: 24px; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .slider-track { --per: 2; --visible: calc(100cqw - 160px); }
}
@media (max-width: 680px) {
  .frame { padding: 0 22px; }
  .hero .eyebrow { font-size: 10.5px; letter-spacing: 0.12em; }
  .hero p.lead { font-size: 16px; }
  footer.site .frame > p span { display: block; }
  footer.site .frame > p .sep { display: none; }
  .header-bar { grid-template-columns: auto 1fr; padding: 16px 20px; gap: 12px; }
  .header-nav { justify-self: end; gap: 20px; }
  .header-nav a { font-size: 14px; }
  .header-actions { display: none; }
  .header-logo img { height: 16px; }
  .site-header.is-shrunk { padding: 10px; }
  .site-header.is-shrunk .header-bar { padding: 10px 18px; }
  .site-header.is-shrunk .header-logo img { height: 14px; }
  section { padding: 80px 0; }
  .hero { padding: 56px 0 80px; }
  .phone { width: 260px; }
  .slider-track { --per: 1; --gap: 18px; --visible: 66cqw; }
  .features-grid, .plans { grid-template-columns: 1fr; }
  .toc ol { grid-template-columns: 1fr; }
  .contact-box dl { grid-template-columns: 1fr; row-gap: 2px; }
  .contact-box dt { margin-top: 6px; }
}