/* ─────────────────────────────────────────────────────────────
   OA KIOSK 랜딩 (8/31 Jay 승인 — issues/2026-08-31-랜딩페이지.md)
   원칙: 타이포 주도 · 잉크/그레이 + 민트 1악센트 · 그라데이션/이모지/균일 카드 금지
   순수 정적 — 프레임워크 없음, Pretendard CDN(폴백: 시스템 국문 폰트)
   ───────────────────────────────────────────────────────────── */

:root {
  --ink: #14191e;        /* 본문 잉크 */
  --ink-soft: #3d454d;   /* 서브 텍스트 */
  --ink-mute: #7a838c;   /* 캡션 */
  --line: #e4e7ea;       /* 헤어라인 */
  --paper: #ffffff;
  --paper-warm: #f7f8f7; /* 섹션 교차 배경 */
  --mint: #05f2a5;       /* 악센트 — 버튼·마크 (위엔 잉크 텍스트) */
  --mint-deep: #02734c;  /* 악센트 텍스트용 — 흰 배경 대비 5.9:1 (review M2: #029e68은 3.45:1 미달) */
  --mint-dim: #dcfbef;   /* 악센트 옅은 면 */
  --dark: #101519;       /* 클라우드 섹션 배경 */
  --radius: 12px;
  --shell: 1120px;
  --font: 'Pretendard Variable', Pretendard, 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* 앵커 이동 시 64px 고정 헤더에 제목이 가리지 않게 (review M1) */
section[id] { scroll-margin-top: 84px; }
/* 키보드 포커스 링 — 브라우저 기본 대신 악센트 링, 다크 섹션 공용 (review m1) */
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 4px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
  letter-spacing: -0.01em; /* 국문 자간 튜닝 */
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.shell { max-width: var(--shell); margin: 0 auto; padding: 0 24px; }
img { max-width: 100%; }
h1, h2, h3 { margin: 0; font-weight: 800; letter-spacing: -0.03em; line-height: 1.22; word-break: keep-all; }
p { margin: 0; word-break: keep-all; }
a { color: inherit; text-decoration: none; }

/* 형광펜 마크 — 제목 속 1악센트 */
.mark {
  font-style: normal;
  background: linear-gradient(transparent 62%, var(--mint) 62%); /* 밑줄형 하이라이트 — 색 그라데이션 아님 */
}

/* 아이브로 — 모노 스타일 소제목 */
.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--mint-deep);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 22px; height: 2px;
  background: var(--mint);
  vertical-align: middle;
  margin-right: 10px;
}

/* ───────── 버튼 ───────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-weight: 700;
  padding: 12px 22px;
  font-size: 15px;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-accent { background: var(--mint); color: var(--ink); }
.btn-accent:hover { background: #04dd97; }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink); background: var(--paper); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-lg { padding: 15px 30px; font-size: 16px; }

/* ───────── 헤더 ───────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 32px; height: 64px; }
.wordmark, .footer-brand {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.02em;
}
.wordmark-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--mint);
  margin: 0 3px 1px;
}
.header-nav { display: flex; gap: 26px; margin-left: auto; }
.header-nav a { font-size: 14.5px; font-weight: 600; color: var(--ink-soft); }
.header-nav a:hover { color: var(--ink); }
.header-actions { display: flex; gap: 8px; margin-left: 8px; }
.header-login { padding: 12px 18px; }

/* ───────── 히어로 ───────── */
.hero { padding: 88px 0 72px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 56px;
  align-items: center;
}
.hero h1 { font-size: clamp(38px, 5.2vw, 60px); }
.hero-sub {
  margin-top: 26px;
  font-size: 18px;
  color: var(--ink-soft);
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 12px; margin-top: 38px; flex-wrap: wrap; }

.hero-visual { margin: 0; }
.hero-visual figcaption, .inverse-caption {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--ink-mute);
  line-height: 1.55;
}

/* 플레이스홀더 프레임 — 실물 자산 자리 (Jay 8/31: 비워두고 진행) */
.ph {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px dashed #c6ccd2;
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, #f0f2f4 14px 15px), /* 해칭 텍스처 */
    var(--paper-warm);
  color: var(--ink-mute);
}
.ph-tag {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
  border: 1px solid #c6ccd2;
  border-radius: 999px;
  padding: 3px 12px;
  background: var(--paper);
}
.ph-note { font-size: 12px; }
.ph-kiosk { aspect-ratio: 3 / 4; }
.ph-wide { aspect-ratio: 16 / 10; }
.ph-admin { aspect-ratio: 16 / 10; }
.ph-dark {
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(255,255,255,0.05) 14px 15px),
    #1a2127;
  border-color: #38424b;
}
.ph-dark .ph-tag { background: #101519; border-color: #38424b; color: #aeb6bd; }

/* ───────── 스탯 — 헤어라인 분할 행 (카드 아님) ───────── */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 84px 0 0;
  border-top: 1px solid var(--ink);
  padding-top: 0;
}
.stat { padding: 26px 20px 6px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat dt { font-size: 13.5px; color: var(--ink-mute); font-weight: 600; }
.stat dd {
  margin: 8px 0 0;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.stat-unit { font-size: 15px; font-weight: 700; color: var(--mint-deep); margin-left: 6px; }

/* ───────── 섹션 공통 ───────── */
section h2 { font-size: clamp(30px, 3.8vw, 44px); }

/* ───────── 문제 제기 ───────── */
.problems { padding: 110px 0; background: var(--paper-warm); }
.num-list {
  list-style: none;
  margin: 56px 0 0;
  padding: 0;
  max-width: 780px;
}
.num-list > li {
  display: flex;
  gap: 34px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
.num-list > li:last-child { border-bottom: 1px solid var(--line); }
.num {
  font-size: 15px;
  font-weight: 800;
  color: var(--mint-deep);
  font-variant-numeric: tabular-nums;
  flex: 0 0 34px;
}
.num-list h3 { font-size: 20px; margin-bottom: 8px; }
.num-list p { color: var(--ink-soft); font-size: 15.5px; }

/* ───────── 핵심 기능 — 교차 에디토리얼 행 ───────── */
.features { padding: 110px 0; }
.feature-rows { margin-top: 72px; display: flex; flex-direction: column; gap: 96px; }
.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 64px;
  align-items: center;
}
.feature-row:nth-child(even) .feature-copy { order: 2; }  /* 지그재그 — 균일 반복 회피 */
.feature-row:nth-child(even) .ph { order: 1; }
.feature-idx {
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
}
.feature-row h3 { font-size: 26px; margin: 12px 0 16px; }
.feature-row > .feature-copy > p { color: var(--ink-soft); font-size: 16px; line-height: 1.75; }
.spec-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.spec-list li {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  padding-left: 20px;
  position: relative;
}
.spec-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 10px; height: 2px;
  background: var(--mint);
}

/* ───────── 배리어프리 — 민트 옅은 면 밴드 (9/1) ───────── */
.a11y { padding: 100px 0; background: var(--mint-dim); }
.a11y-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}
.a11y-lead { margin-top: 24px; font-size: 16.5px; color: var(--ink-soft); line-height: 1.75; }
.a11y-list { list-style: none; margin: 6px 0 0; padding: 0; }
.a11y-list li {
  padding: 18px 0;
  border-top: 1px solid rgba(2, 115, 76, 0.22);
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.65;
}
.a11y-list li:last-child { border-bottom: 1px solid rgba(2, 115, 76, 0.22); }
.a11y-list strong { display: block; color: var(--ink); font-weight: 700; margin-bottom: 4px; font-size: 17px; }

/* ───────── 클라우드 어드민 — 다크 반전 섹션 ───────── */
.cloud { padding: 120px 0; background: var(--dark); color: #e8ecef; }
.cloud-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 72px;
  align-items: center;
}
.eyebrow-inverse { color: var(--mint); }
.inverse-title { color: #fff; }
.cloud-lead { margin-top: 24px; font-size: 17px; color: #aeb6bd; line-height: 1.75; }
.cloud-list { list-style: none; margin: 34px 0 0; padding: 0; }
.cloud-list li {
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 15.5px;
  color: #c7cdd2;
  line-height: 1.65;
}
.cloud-list strong { color: #fff; font-weight: 700; margin-right: 6px; }
.cloud-visual { margin: 0; }

/* ───────── PMS 연동 ───────── */
.pms { padding: 110px 0; }
.pms-cols {
  margin-top: 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 56px;
}
.pms-col { border-top: 2px solid var(--ink); padding-top: 26px; }
.pms-col-partner { grid-column: 1 / -1; border-top-color: var(--mint); background: var(--mint-dim); padding: 30px 34px 34px; border-radius: 0 0 var(--radius) var(--radius); }
.pms-badge {
  display: block;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  margin-bottom: 10px;
}
.pms-badge-accent { color: var(--mint-deep); }
.pms-col h3 { font-size: 22px; }
.pms-col p { margin-top: 14px; color: var(--ink-soft); font-size: 15.5px; line-height: 1.7; }

/* ───────── 도입 절차 ───────── */
.process { padding: 110px 0; background: var(--paper-warm); }
.step-row {
  list-style: none;
  margin: 64px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  counter-reset: step;
}
.step { border-top: 1px solid var(--ink); padding-top: 22px; position: relative; }
.step .num { display: block; margin-bottom: 14px; }
.step h3 { font-size: 20px; }
.step p { margin-top: 10px; color: var(--ink-soft); font-size: 15px; }

/* ───────── 문의 ───────── */
.contact { padding: 120px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 64px;
  align-items: center;
}
.contact-sub { margin-top: 22px; color: var(--ink-soft); font-size: 17px; line-height: 1.7; }
.contact-card {
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 36px 38px;
  box-shadow: 8px 8px 0 var(--mint); /* 오프셋 섀도 — 악센트 포인트 */
}
.contact-label {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--mint-deep);
}
.contact-tel {
  display: block;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-top: 14px;
  font-variant-numeric: tabular-nums;
}
.contact-tel:hover { color: var(--mint-deep); }
.contact-mail { display: block; margin-top: 8px; font-size: 17px; font-weight: 600; color: var(--ink-soft); }
.contact-mail:hover { color: var(--ink); }
.contact-hours { margin-top: 18px; font-size: 13px; color: var(--ink-mute); }

/* ───────── 푸터 ───────── */
.site-footer { border-top: 1px solid var(--line); padding: 44px 0 52px; }
.footer-row { display: flex; flex-wrap: wrap; gap: 24px 48px; align-items: baseline; }
.footer-info { font-size: 13.5px; color: var(--ink-mute); line-height: 1.8; }
.footer-copy { margin-left: auto; font-size: 12.5px; color: var(--ink-mute); }

/* ───────── 등장 모션 (JS 없으면 그대로 노출 — .js 게이트) ───────── */
.js .io { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .io.in { opacity: 1; transform: none; }
.js .d1.io.in { transition-delay: 0.08s; }
.js .d2.io.in { transition-delay: 0.16s; }
.js .d3.io.in { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .io { opacity: 1; transform: none; transition: none; }
}

/* ───────── 반응형 ───────── */
.wide-only { display: inline; }
@media (max-width: 1024px) {
  .hero-grid, .cloud-grid, .contact-grid, .a11y-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 64px; }
  .hero-visual { max-width: 420px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .feature-row { grid-template-columns: 1fr; gap: 28px; }
  .feature-row:nth-child(even) .feature-copy { order: 1; }
  .feature-row:nth-child(even) .ph { order: 2; }
  .feature-rows { gap: 72px; }
  .pms-cols { grid-template-columns: 1fr; }
  .wide-only { display: none; }
}
@media (max-width: 640px) {
  .header-nav { display: none; }
  .header-actions { margin-left: auto; } /* 내비 숨김 시 우측 정렬 유지 */
  .header-login, .header-cta { padding: 10px 14px; font-size: 14px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 14px 4px; }
  .num-list > li { gap: 18px; }
  .step-row { grid-template-columns: 1fr; gap: 32px; }
  .problems, .features, .a11y, .cloud, .pms, .process, .contact { padding: 76px 0; }
  .contact-card { padding: 28px 24px; }
  .footer-copy { margin-left: 0; }
}