/* ═══════════════════════════════════════════════════════
   ergo-C 인간공학 실험실  ·  크림 + 테라코타  ·  공유 스타일
   허브(index.html)와 각 실험 페이지가 함께 사용
   ═══════════════════════════════════════════════════════ */
:root{
  --cream:#FBF3E9; --cream-2:#F5EADB; --paper:#FFFFFF;
  --ink:#2A2320; --ink-2:#5A4F48; --ink-3:#8A7E75;
  --coral:#C9512B; --coral-deep:#A53E1E; --coral-soft:#F3DCD0;
  --sage:#5C7A5C; --sage-soft:#E4EBE1;
  --blue:#3E6E9E; --blue-soft:#DCE7F1;
  --line:#E7DAC8; --line-mid:#D8C7B0;
  --radius:16px; --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(74,55,40,.06),0 4px 14px rgba(74,55,40,.05);
  --shadow-md:0 8px 28px rgba(74,55,40,.10);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Pretendard',-apple-system,'Segoe UI',sans-serif;
  background:var(--cream); color:var(--ink); line-height:1.65;
  -webkit-font-smoothing:antialiased; word-break:keep-all;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}

/* ── Header / Nav ── */
.nav{position:sticky;top:0;z-index:50;background:rgba(251,243,233,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{max-width:920px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.3px}
.brand .mark{width:32px;height:32px;border-radius:9px;background:var(--coral);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:.9rem;
  box-shadow:0 2px 8px rgba(201,81,43,.35)}
.brand .name{font-size:1rem}
.nav-back{font-size:.88rem;color:var(--ink-2);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.nav-back:hover{color:var(--coral)}

/* ── Breadcrumb ── */
.crumb{font-size:.82rem;color:var(--ink-3);padding:18px 0 0}
.crumb a:hover{color:var(--coral)}
.crumb .sep{margin:0 6px;opacity:.5}

/* ── Hero ── */
.hero{padding:34px 0 20px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--paper);
  border:1px solid var(--line-mid);border-radius:30px;padding:6px 15px;font-size:.8rem;
  font-weight:700;color:var(--coral);box-shadow:var(--shadow-sm);margin-bottom:18px}
.hero h1{font-size:2.1rem;font-weight:800;letter-spacing:-1px;line-height:1.22;margin-bottom:14px}
.hero h1 .accent{color:var(--coral)}
.hero .lead{font-size:1.02rem;color:var(--ink-2);max-width:620px;margin:0 auto}
@media(max-width:640px){.hero h1{font-size:1.6rem}}

/* ── Section / Card ── */
.section{padding:22px 0}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:26px}
.card + .card{margin-top:22px}
.card h2{font-size:1.28rem;font-weight:800;letter-spacing:-.4px;margin-bottom:14px}
.card h3{font-size:1.02rem;font-weight:800;margin:18px 0 8px}
.card p{color:var(--ink-2);margin-bottom:12px}
.card p:last-child{margin-bottom:0}
.card ul{margin:0 0 12px 1.1em;color:var(--ink-2)}
.card li{margin-bottom:6px}
.card strong{color:var(--ink)}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:30px;font-size:.95rem;font-weight:700;font-family:inherit;
  cursor:pointer;border:none;transition:.18s;min-height:48px}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 4px 16px rgba(201,81,43,.28)}
.btn-primary:hover{background:var(--coral-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--paper);color:var(--ink);border:1.5px solid var(--line-mid)}
.btn-ghost:hover{border-color:var(--coral);color:var(--coral)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ── Stage (실험 무대 공용) ── */
.stage{background:var(--cream-2);border:1px solid var(--line-mid);border-radius:var(--radius);
  padding:26px;text-align:center;min-height:280px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:18px;position:relative;overflow:hidden}

/* ── Stat / result chips ── */
.stats{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 20px;min-width:110px}
.stat .num{font-size:1.7rem;font-weight:800;color:var(--coral);line-height:1.1;
  font-variant-numeric:tabular-nums}
.stat .lbl{font-size:.78rem;color:var(--ink-3);font-weight:600;margin-top:3px}

/* ── Table ── */
.tbl-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:center}
th{background:var(--cream-2);font-weight:700;color:var(--ink)}
td{color:var(--ink-2)}

/* ── Callout ── */
.callout{background:var(--sage-soft);border-left:4px solid var(--sage);
  border-radius:8px;padding:14px 16px;font-size:.92rem;color:var(--ink-2)}
.callout.coral{background:var(--coral-soft);border-left-color:var(--coral)}
.callout.blue{background:var(--blue-soft);border-left-color:var(--blue)}
.callout b{color:var(--ink)}

/* ── Lab featured card (정서·무드미터) ── */
.lab-featured{display:block;background:linear-gradient(135deg,var(--coral) 0%,var(--coral-deep) 100%);
  border-radius:var(--radius);box-shadow:var(--shadow-md);padding:30px 34px;color:#fff;
  margin-bottom:30px;transition:.18s}
.lab-featured:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(165,62,30,.38)}
.lab-featured .badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.22);
  border-radius:20px;padding:6px 14px;font-size:.78rem;font-weight:700;margin-bottom:14px}
.lab-featured h3{font-size:1.55rem;font-weight:800;letter-spacing:-.5px;margin-bottom:4px}
.lab-featured .en{font-size:.85rem;color:rgba(255,255,255,.8);font-weight:600;letter-spacing:.2px;margin-bottom:10px}
.lab-featured p{font-size:.98rem;color:rgba(255,255,255,.95);max-width:560px;margin:0}
.lab-featured .go{margin-top:16px;font-size:.92rem;font-weight:800}
@media(max-width:640px){.lab-featured{padding:24px 24px}.lab-featured h3{font-size:1.3rem}}

/* ── Lab category section ── */
.lab-cat{margin:8px 0 14px;padding-top:26px;display:flex;align-items:baseline;gap:10px;
  border-top:1px solid var(--line)}
.lab-cat:first-of-type{border-top:none;padding-top:0}
.lab-cat h2{font-size:1.05rem;font-weight:800;color:var(--ink)}
.lab-cat .cnt{font-size:.8rem;color:var(--ink-3);font-weight:600}

/* ── Lab index grid ── */
.lab-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-bottom:12px}
.lab-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:22px;transition:.18s;cursor:pointer;display:flex;
  flex-direction:column;gap:8px}
.lab-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-mid)}
.lab-card .mark{width:34px;height:34px;border-radius:9px;background:var(--coral-soft);color:var(--coral-deep);
  display:grid;place-items:center;font-weight:800;font-size:.85rem;letter-spacing:.02em}
.lab-card h3{font-size:1.05rem;font-weight:800;margin:0}
.lab-card .en{font-size:.78rem;color:var(--ink-3);font-weight:600;letter-spacing:.2px}
.lab-card p{font-size:.9rem;color:var(--ink-2);margin:2px 0 0}
.lab-card .go{margin-top:auto;font-size:.85rem;font-weight:700;color:var(--coral);padding-top:8px}

/* ── Footer ── */
.footer{border-top:1px solid var(--line);margin-top:36px;padding:28px 0;text-align:center;
  font-size:.85rem;color:var(--ink-3)}
.footer a{color:var(--ink-2);font-weight:600}
.footer a:hover{color:var(--coral)}
.footer .disclaimer{font-size:.8rem;margin-top:10px;max-width:640px;margin-left:auto;margin-right:auto}

/* ── Ad slot ── */
.ad-slot{margin:22px 0;text-align:center;min-height:90px}
.ad-slot .ad-label{font-size:.7rem;color:var(--ink-3);letter-spacing:.5px;margin-bottom:4px;text-transform:uppercase}