/* ADD+ corporate v3 — clean tech: tokens, base, top bar, hero, stats */
:root {
  --bg: #FFFFFF;
  --alt: #F6F7F8;
  --dark: #14161A;
  --dark-2: #1D2025;
  --ink: #17191C;
  --sub: #40444A;
  --body: #5C6167;
  --faint: #8B9096;
  --line: #E7E9EC;
  --line-dark: rgba(255, 255, 255, 0.12);
  --cream: #F3F4F5;
  --red: #E5352B;
  --red-deep: #C22B22;
  --red-soft: #FF6A5E;
  --sans: "Pretendard Variable", Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 18px;
  --shadow-card: 0 1px 2px rgba(20, 22, 26, 0.05), 0 12px 32px rgba(20, 22, 26, 0.07);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--body);
  font-size: 16px;
  line-height: 1.72;
  letter-spacing: -0.012em;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }
b { color: var(--sub); font-weight: 700; }

h1, h2 {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.18;
  text-wrap: balance;
}
h1 { font-size: clamp(34px, 5vw, 60px); }
h1 em { font-style: normal; color: var(--red); }
h2 { font-size: clamp(25px, 3.4vw, 40px); }
h3 { color: var(--ink); font-weight: 700; letter-spacing: -0.02em; }

.frame {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: clamp(20px, 5vw, 44px);
  padding-right: clamp(20px, 5vw, 44px);
}

.kicker {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--red);
  margin-bottom: 16px;
}
.lead { max-width: 34em; margin-top: 22px; color: var(--sub); font-size: clamp(15.5px, 2vw, 18px); }
.para { max-width: 44em; margin-top: 18px; font-size: clamp(15px, 1.8vw, 16.5px); }

/* ---- top bar ---- */
.top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px clamp(20px, 5vw, 44px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark {
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 9px;
}
.wordmark em { font-style: normal; color: var(--red); }
.wordmark span { font-size: 12.5px; font-weight: 600; color: var(--faint); letter-spacing: 0; }
.top nav { display: flex; align-items: center; gap: clamp(12px, 2.2vw, 26px); }
.top nav a { font-size: 14px; font-weight: 600; color: var(--sub); transition: color 0.2s var(--ease); }
.top nav a:hover { color: var(--ink); }
.top nav .nav-cta {
  color: #fff;
  background: var(--red);
  padding: 9px 18px;
  border-radius: 10px;
  font-weight: 700;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.top nav .nav-cta:hover { background: var(--red-deep); transform: translateY(-1px); }

/* ---- hero ---- */
.hero { padding: clamp(56px, 9vh, 104px) 0 clamp(56px, 9vh, 96px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--sub);
  background: var(--alt);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 7px 14px;
  margin-bottom: 26px;
}
.badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--red); }
.hero-cta { display: flex; gap: 12px; margin-top: 34px; }

.btn {
  display: inline-block;
  font-size: 15px;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 12px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--red); transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: var(--bg); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

.hero-photo {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.hero-photo img { width: 100%; aspect-ratio: 4 / 4.6; object-fit: cover; }
.hero-photo figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 18px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #FFF;
  background: linear-gradient(transparent, rgba(16, 14, 13, 0.55));
}

/* ---- hero stats ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(12px, 2vw, 20px);
  margin-top: clamp(48px, 8vh, 80px);
}
.stat {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  background: var(--bg);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.stat:hover { border-color: var(--red); transform: translateY(-2px); }
.stat em {
  display: block;
  font-style: normal;
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat span { display: block; margin-top: 4px; font-size: 13px; color: var(--body); }

@media (max-width: 900px) {
  .wordmark span { display: none; }
  .top nav a:not(.nav-cta) { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-photo img { aspect-ratio: 16 / 10; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero h1 br { display: none; }
}