/* 베이스 리셋 + 타이포 + 공통 유틸 */

/* Pretendard Variable */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");
/* Black Han Sans */
@import url("https://fonts.googleapis.com/css2?family=Black+Han+Sans&display=swap");
/* Gmarket Sans */
@import url("https://hangeul.pstatic.net/hangeul_static/css/gmarket-sans.css");

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: var(--t-body);
  line-height: 1.75;        /* 한국어 가독 — 영문 1.5 → 1.75 */
  color: var(--c-text);
  background: var(--c-bg);
  word-break: keep-all;     /* 한국어 단어 끊김 방지 */
  overflow-wrap: break-word;
  font-feature-settings: "ss02", "ss03", "tnum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}
img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  font-weight: 800;
  line-height: 1.35;             /* 한국어 헤딩 — 영문 1.2 → 1.35 */
  letter-spacing: -0.025em;
  color: var(--c-ink-900);
  word-break: keep-all;
}
h1 { font-size: var(--t-h1); font-weight: 900; letter-spacing: -0.04em; line-height: 1.25; }
h2 { font-size: var(--t-h2); line-height: 1.3; }
h3 { font-size: var(--t-h3); line-height: 1.4; }
h4 { font-size: var(--t-h4); line-height: 1.45; }
p  { margin: 0 0 1em; line-height: 1.75; }
.lead { font-size: var(--t-lead); color: var(--c-text-soft); line-height: 1.8; }
.impact { font-family: var(--f-impact); letter-spacing: -0.01em; font-weight: 400; }
small { font-size: var(--t-small); }

/* Container */
.wrap {
  max-width: var(--w-container);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
}
.wrap-narrow { max-width: var(--w-narrow); margin: 0 auto; padding: 0 1rem; }

/* Section */
.section { padding: var(--s-9) 0; }
.section-tight { padding: var(--s-7) 0; }
.section-soft { background: var(--c-bg-soft); }
.section-mint { background: var(--c-bg-mint); }
.section-dark { background: var(--c-blue-900); color: #fff; }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }

/* Eyebrow (섹션 상단 작은 라벨) */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--r-pill);
  background: var(--c-mint-50);
  color: var(--c-mint-700);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--c-mint-500);
  border-radius: 50%;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: 1rem;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-mint-500), var(--c-mint-700));
  color: #fff;
  box-shadow: var(--sh-mint);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 38px -10px rgba(30, 58, 109, 0.6); }
.btn-coral {
  background: var(--c-mono-900);
  color: #fff;
  box-shadow: none;
  border-radius: 0;
}
.btn-coral:hover { transform: translateY(-2px); opacity: 0.85; }
.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border: 1.5px solid var(--c-border);
}
.btn-ghost:hover { border-color: var(--c-mint-500); color: var(--c-mint-700); }
.btn-lg { padding: 1.05rem 1.9rem; font-size: 1.05rem; }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.9rem; }

/* Card */
.card {
  background: #fff;
  border-radius: var(--r-lg);
  padding: var(--s-5);
  border: 1px solid var(--c-border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
  border-color: var(--c-mint-300);
}

/* Grid helpers */
.grid { display: grid; gap: var(--s-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Visually hidden (a11y) */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Stagger animation utility */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; animation: fadeUp 0.7s var(--ease) forwards; }
.fade-up.d1 { animation-delay: 80ms; }
.fade-up.d2 { animation-delay: 160ms; }
.fade-up.d3 { animation-delay: 240ms; }
.fade-up.d4 { animation-delay: 320ms; }
.fade-up.d5 { animation-delay: 400ms; }