:root {
  --brand: #1a2b4a;
  --accent: #3b82f6;
  --accent-deep: #1d4ed8;
  --accent-soft: #dbeafe;
  --warm: #f59e0b;
  --text: #1f2937;
  --text-sub: #6b7280;
  --text-faint: #9ca3af;
  --bg: #faf9f7;
  --surface: #ffffff;
  --border: #e7e4de;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  word-break: keep-all;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site {
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
header.site .wrap, header.site .wrap-narrow {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo { font-size: 18px; font-weight: 800; color: var(--brand); text-decoration: none; }
nav a {
  margin-left: 16px; font-size: 14px; color: var(--text-sub);
  text-decoration: none;
}
nav a:hover { color: var(--accent); }

main { padding: 0 0 72px; }

/* ── 히어로 ─────────────────────────────────────────────── */

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: center;
  padding: 72px 0 56px;
}
.hero-copy h1 {
  font-size: 38px; line-height: 1.32; color: var(--brand);
  letter-spacing: -0.8px; font-weight: 800;
}
.hero-copy h1 em {
  font-style: normal; color: var(--accent);
}
.hero-copy p.tagline {
  margin-top: 16px; font-size: 16.5px; color: var(--text-sub);
}
.hero-badges { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  font-size: 12.5px; font-weight: 600; color: var(--brand);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 12px;
}

/* 앱 대시보드 목업 카드 */
.mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px 20px 20px;
  box-shadow:
    0 1px 2px rgba(26, 43, 74, 0.05),
    0 16px 40px -18px rgba(26, 43, 74, 0.25);
}
.mock-head { display: flex; align-items: baseline; justify-content: space-between; }
.mock-head .label { font-size: 12.5px; color: var(--text-sub); font-weight: 600; }
.mock-head .period { font-size: 11.5px; color: var(--text-faint); }
.mock-hero-number {
  margin-top: 2px;
  font-size: 30px; font-weight: 800; color: var(--brand);
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
}
.mock-hero-number .delta {
  font-size: 12.5px; font-weight: 700; color: #15803d;
  margin-left: 8px; letter-spacing: 0;
}
.mock svg.chart { display: block; width: 100%; height: auto; margin-top: 14px; }

.mock-tiles {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px;
}
.tile {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 14px; padding: 12px 14px;
}
.tile .t-label { font-size: 11.5px; color: var(--text-sub); }
.tile .t-value {
  font-size: 18px; font-weight: 800; color: var(--brand);
  font-variant-numeric: tabular-nums;
}
.tile .t-value .unit { font-size: 12px; font-weight: 600; color: var(--text-sub); }
.tile .t-value .flame { color: var(--warm); }

/* 과목별 진행 바 */
.mock-subjects { margin-top: 16px; display: flex; flex-direction: column; gap: 9px; }
.subj { display: grid; grid-template-columns: 44px 1fr 42px; gap: 10px; align-items: center; }
.subj .s-name { font-size: 12px; font-weight: 600; color: var(--text); }
.subj .s-track {
  display: block; height: 8px; border-radius: 4px; background: #efece6; overflow: hidden;
}
.subj .s-fill { display: block; height: 100%; border-radius: 4px; }
.subj .s-pct {
  font-size: 11.5px; color: var(--text-sub); text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ── 기능 카드 ───────────────────────────────────────────── */

.section-title {
  text-align: center; font-size: 24px; color: var(--brand);
  font-weight: 800; letter-spacing: -0.4px; margin-top: 24px;
}
.section-sub { text-align: center; font-size: 14.5px; color: var(--text-sub); margin-top: 8px; }

.features {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px; margin-top: 32px;
}
.feature {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 22px 20px;
}
.feature .f-icon {
  width: 38px; height: 38px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); margin-bottom: 12px;
}
.feature .f-icon svg { display: block; }
.feature h3 { font-size: 15px; color: var(--brand); margin-bottom: 6px; }
.feature p { font-size: 13.5px; color: var(--text-sub); }

/* ── 법적 문서 ───────────────────────────────────────────── */

article.doc {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 32px 28px; margin-top: 48px;
}
article.doc h1 { font-size: 24px; color: var(--brand); margin-bottom: 6px; }
article.doc p.date { font-size: 13px; color: var(--text-sub); margin-bottom: 24px; }
article.doc h2 { font-size: 16.5px; color: var(--brand); margin: 26px 0 8px; }
article.doc p, article.doc li { font-size: 14.5px; }
article.doc ul { padding-left: 20px; margin: 6px 0; }
article.doc .notice {
  margin-top: 28px; padding: 12px 14px; border-radius: 8px;
  background: #fef9ec; border: 1px solid #f5e3b3;
  font-size: 13px; color: #8a6d1d;
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 28px 0; font-size: 13px; color: var(--text-sub);
}
footer.site .footer-top {
  display: flex; flex-wrap: wrap; gap: 10px 20px; align-items: baseline;
  justify-content: space-between;
  padding-bottom: 18px; margin-bottom: 16px; border-bottom: 1px solid var(--border);
}
footer.site .footer-contact a,
footer.site .footer-links a { color: var(--text-sub); text-decoration: none; }
footer.site .footer-contact a:hover,
footer.site .footer-links a:hover { color: var(--accent); }
footer.site .footer-links a { margin-right: 14px; }
footer.site .footer-links a:last-child { margin-right: 0; }
footer.site .footer-company {
  font-size: 12px; color: var(--text-faint); line-height: 1.8;
}
footer.site .footer-company p { margin: 0; }
footer.site .footer-company strong { color: var(--text-sub); font-weight: 600; }
footer.site .footer-company-en { margin-left: 2px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 40px; }
  .hero-copy { text-align: center; }
  .hero-badges { justify-content: center; }
  .hero-copy h1 { font-size: 29px; }
  .mock { max-width: 420px; margin: 0 auto; width: 100%; }
  article.doc { padding: 24px 18px; }
}