:root {
  --leaf: #5fa834;
  --leaf-ink: #3f6f22; /* text on light bg, >=4.5:1 */
  --leaf-fill: #4a8329; /* solid fill under white text */
  --leaf-d: #2f5e1a;
  --lime: #c9ef8f;
  --lime-soft: #eef8dc;
  --cream: #fbf8ee;
  --ink: #1f2a17;
  --muted: #5d6b52;
  --pink: #f06ba8;
  --pink-ink: #a34972;
  --pink-soft: #fde4ef;
  --brown: #8a5a34;
  --card: #ffffff;
  --line: #e2e7d2;
  --red: #d64545;
  --radius: 20px;
  --shadow: 0 6px 24px rgba(47, 94, 26, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: 'Noto Sans KR', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
}
h1, h2, h3, .logo, .btn, .tab, .stat b, .ov-title { font-family: 'Jua', 'Noto Sans KR', sans-serif; font-weight: 400; }
h1, h2, h3 { line-height: 1.25; margin: 0; }
img, svg, canvas { max-width: 100%; }
.nav nav, .hero > *, .stats > *, .anatomy > *, .cards > *, .timeline > *, .care-grid > *, .myths > *, .checklist > *, .opts > *, .result > * { min-width: 0; }
[hidden] { display: none !important; }
.small { font-size: .88rem; }
.kicker { margin: 0 0 8px; color: var(--leaf-ink); font-weight: 700; font-size: .9rem; letter-spacing: .02em; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 20px;
  padding: 12px 20px;
  background: rgba(251, 248, 238, .88);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.logo { display: flex; align-items: center; gap: 8px; font-size: 1.35rem; color: var(--leaf-d); text-decoration: none; white-space: nowrap; }
.logo-dot { width: 14px; height: 14px; border-radius: 50% 50% 50% 0; background: var(--leaf); transform: rotate(-45deg); }
.nav nav { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; margin-left: auto; }
.nav nav::-webkit-scrollbar { display: none; }
.nav nav a { padding: 6px 12px; border-radius: 999px; color: var(--muted); text-decoration: none; font-size: .92rem; white-space: nowrap; }
.nav nav a:hover { background: var(--lime-soft); color: var(--leaf-d); }
.nav nav a.nav-play { background: var(--leaf-fill); color: #fff; }
@media (max-width: 760px) {
  .nav { flex-direction: column; align-items: stretch; gap: 6px; padding: 10px 16px; }
  .nav nav { margin-left: 0; }
}

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 999px; border: 2px solid var(--leaf-fill);
  background: var(--leaf-fill); color: #fff; font-size: 1.1rem; text-decoration: none; cursor: pointer;
  transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-2px); background: var(--leaf-d); border-color: var(--leaf-d); }
.btn.ghost { background: transparent; color: var(--leaf-d); }
.btn.ghost:hover { background: var(--lime-soft); }

/* hero */
.hero {
  display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 24px;
  max-width: 1140px; margin: 0 auto; padding: 48px 20px 24px;
}
.hero h1 { font-size: clamp(2.3rem, 5.6vw, 4rem); margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: var(--leaf-ink); background: linear-gradient(transparent 62%, var(--lime) 62%); padding: 0 4px; }
.lead { color: var(--muted); margin: 0 0 12px; max-width: 34em; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-art {
  position: relative; aspect-ratio: 400 / 420; max-width: 460px; width: 100%; justify-self: center;
  background: radial-gradient(circle at 50% 45%, #e4f6c6 0%, rgba(228, 246, 198, 0) 68%);
}
.hero-art svg { width: 100%; height: 100%; transform-origin: 55% 92%; animation: sway 3.6s ease-in-out infinite; }
@keyframes sway { 0%, 100% { transform: rotate(-1.6deg); } 50% { transform: rotate(1.6deg); } }
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 28px; }
  .hero-art { max-width: 340px; order: -1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-art svg { animation: none; }
  html { scroll-behavior: auto; }
}

/* stats */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  max-width: 1140px; margin: 12px auto 0; padding: 0 20px;
}
.stat { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.stat b { display: block; font-size: 2.3rem; color: var(--leaf-d); line-height: 1.1; }
.stat small { font-size: 1.1rem; margin-left: 2px; }
.stat span { color: var(--muted); font-size: .92rem; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* sections */
.sec { max-width: 1140px; margin: 0 auto; padding: 80px 20px 20px; }
.sec.tint { max-width: none; background: var(--lime-soft); padding-bottom: 80px; margin-top: 60px; }
.sec.tint > * { max-width: 1100px; margin-left: auto; margin-right: auto; }
.sec-head { margin-bottom: 28px; }
.sec-head h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 8px; }
.sec-head p:not(.kicker) { color: var(--muted); margin: 0; max-width: 46em; }
.note { margin-top: 20px; padding: 14px 18px; border-radius: 14px; background: var(--pink-soft); color: #7a2f55; font-size: .95rem; }

/* anatomy */
.anatomy { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.anatomy-art { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 10px; }
.anatomy-art svg { display: block; width: 100%; height: auto; }
.anat-panel { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.anat-panel h3 { font-size: 1.8rem; color: var(--leaf-d); margin-bottom: 10px; }
.anat-panel p { margin: 0 0 18px; min-height: 7.5em; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1.5px solid var(--line); background: var(--cream); border-radius: 999px; padding: 5px 12px; font: inherit; font-size: .88rem; cursor: pointer; color: var(--muted); }
.chip:hover { border-color: var(--leaf); }
.chip.on { background: var(--leaf-fill); border-color: var(--leaf-fill); color: #fff; }
.hot { cursor: pointer; outline: none; }
.hot-dot { fill: var(--pink); stroke: #fff; stroke-width: 3; transition: fill .2s; }
.hot-ring { fill: none; stroke: var(--pink); stroke-width: 3; transform-box: fill-box; transform-origin: center; animation: pulse 1.8s ease-out infinite; }
.hot.on .hot-dot { fill: var(--leaf-d); }
.hot.on .hot-ring { stroke: var(--leaf-d); }
.hot:focus-visible .hot-dot { stroke: var(--ink); }
@keyframes pulse { 0% { transform: scale(.6); opacity: 1; } 100% { transform: scale(1.9); opacity: 0; } }
@media (max-width: 820px) { .anatomy { grid-template-columns: 1fr; } .anat-panel p { min-height: 0; } }

/* species cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.sp-card { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.sp-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.sp-art { position: relative; height: 170px; background: linear-gradient(180deg, #f4fbe8, #e3f3c8); display: flex; justify-content: center; padding-top: 10px; }
.sp-art svg { height: 160px; width: auto; }
.tag { position: absolute; top: 10px; left: 10px; background: #fff; border-radius: 999px; padding: 2px 10px; font-size: .78rem; font-weight: 700; color: var(--leaf-d); }
.tag.warn { background: #ffe1d6; color: #a2401c; }
.tag.pink { background: var(--pink-soft); color: #a3346c; }
.sp-body { padding: 16px 18px 18px; }
.sp-body h3 { font-size: 1.4rem; }
.sci { margin: 0 0 10px; font-style: italic; color: var(--muted); font-size: .88rem; }
.sp-body dl { margin: 0 0 10px; display: grid; gap: 2px; font-size: .9rem; }
.sp-body dl div { display: flex; gap: 8px; }
.sp-body dt { color: var(--leaf-ink); font-weight: 700; flex: none; width: 4.2em; }
.sp-body dd { margin: 0; }
.sp-body p { margin: 0 0 10px; font-size: .95rem; }
.tip { background: var(--lime-soft); border-radius: 12px; padding: 8px 12px; font-size: .9rem !important; margin-bottom: 0 !important; }
.tip b { color: var(--leaf-d); margin-right: 4px; }

/* timeline */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: step; }
.timeline li { position: relative; background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 18px 16px; }
.timeline li::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--leaf-fill); color: #fff; font-family: 'Jua', sans-serif; font-size: 1.1rem; margin-bottom: 8px;
}
.timeline .when { display: inline-block; font-size: .8rem; font-weight: 700; color: var(--brown); background: #f5ead9; border-radius: 999px; padding: 1px 9px; }
.timeline h3 { font-size: 1.2rem; margin: 6px 0; }
.timeline p { margin: 0; font-size: .9rem; color: var(--muted); }
@media (max-width: 1000px) { .timeline { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .timeline { grid-template-columns: 1fr; } }

/* care */
.care-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.care-card { background: var(--card); border-radius: var(--radius); padding: 20px; border: 2px solid var(--line); }
.care-ico { font-size: 1.8rem; line-height: 1; margin-bottom: 8px; }
.care-card h3 { font-size: 1.3rem; margin-bottom: 6px; }
.care-card p { margin: 0; font-size: .93rem; color: var(--muted); }
@media (max-width: 900px) { .care-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .care-grid { grid-template-columns: 1fr; } }
.checklist-box { margin-top: 22px; background: var(--card); border-radius: var(--radius); padding: 22px; border: 2px solid var(--leaf-fill); }
.checklist-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.checklist-head h3 { font-size: 1.4rem; }
.checklist-head span { font-weight: 700; color: var(--leaf-d); }
.bar { height: 10px; background: var(--lime-soft); border-radius: 999px; overflow: hidden; margin: 10px 0 14px; }
.bar i { display: block; height: 100%; width: 0; background: var(--leaf); border-radius: 999px; transition: width .3s; }
.checklist { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 18px; }
@media (max-width: 700px) { .checklist { grid-template-columns: 1fr; } }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 6px 4px; cursor: pointer; font-size: .95rem; }
.check input { width: 20px; height: 20px; accent-color: var(--leaf); margin-top: 3px; flex: none; }
.check input:checked + span { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--leaf); }
.check-msg { margin: 10px 0 0; font-weight: 700; color: var(--leaf-d); }

/* myths */
.myths { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .myths { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .myths { grid-template-columns: 1fr; } }
.myth { perspective: 1000px; background: none; border: 0; padding: 0; height: 250px; font: inherit; color: inherit; text-align: left; cursor: pointer; }
.myth-inner { position: relative; display: block; width: 100%; height: 100%; transition: transform .55s; transform-style: preserve-3d; }
.myth.flipped .myth-inner { transform: rotateY(180deg); }
.myth-front, .myth-back {
  position: absolute; inset: 0; display: flex; flex-direction: column; gap: 8px;
  padding: 22px; border-radius: var(--radius); backface-visibility: hidden; -webkit-backface-visibility: hidden; overflow: auto;
}
.myth-front { background: var(--card); border: 2px solid var(--line); }
.myth-front b { color: var(--pink-ink); font-family: 'Jua', sans-serif; font-weight: 400; font-size: 1.1rem; }
.myth-front span { font-family: 'Jua', sans-serif; font-size: 1.35rem; line-height: 1.35; }
.myth-front small { margin-top: auto; color: var(--muted); }
.myth-back { background: var(--leaf-d); color: #eef8dc; transform: rotateY(180deg); font-size: .93rem; }
.myth-back b { font-family: 'Jua', sans-serif; font-weight: 400; font-size: 1.3rem; }
.myth-back b.no { color: #ffb4a8; }
.myth-back b.ok { color: var(--lime); }
.myth:focus-visible .myth-inner { outline: 3px solid var(--pink); border-radius: var(--radius); }

/* play */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tab { border: 2px solid var(--line); background: var(--card); border-radius: 999px; padding: 8px 18px; font-size: 1.1rem; cursor: pointer; color: var(--muted); }
.tab[aria-selected="true"] { background: var(--leaf-fill); border-color: var(--leaf-fill); color: #fff; }
.hud { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 10px; color: var(--muted); }
.hud b { color: var(--leaf-d); font-size: 1.2rem; font-family: 'Jua', sans-serif; font-weight: 400; }
.game-wrap { position: relative; border-radius: var(--radius); overflow: hidden; border: 2px solid var(--line); aspect-ratio: 720 / 440; background: #dff2c0; }
.game-wrap canvas { display: block; width: 100%; height: 100%; touch-action: none; cursor: crosshair; }
.game-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 16px; text-align: center; background: rgba(31, 42, 23, .62); color: #fff;
}
.ov-title { margin: 0; font-size: clamp(1.6rem, 5vw, 2.6rem); }
.ov-text { margin: 0 0 8px; font-size: clamp(.8rem, 2.2vw, 1rem); max-width: 34em; }
.legend { display: inline-flex; align-items: center; gap: 4px; margin: 0 6px; white-space: nowrap; }
.lg { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.lg.fly { background: #2b2b2b; border: 2px solid #fff; }
.lg.gold { background: #f2b705; }
.lg.wasp { background: repeating-linear-gradient(90deg, #f5c518 0 3px, #111 3px 6px); }
@media (max-width: 560px) { .game-wrap { aspect-ratio: 720 / 560; } }

.quiz { background: var(--card); border: 2px solid var(--line); border-radius: var(--radius); padding: 26px; max-width: 760px; }
.q-head { display: flex; justify-content: space-between; color: var(--muted); font-size: .9rem; margin-bottom: 6px; }
.q-bar { height: 8px; background: var(--lime-soft); border-radius: 999px; overflow: hidden; margin-bottom: 18px; }
.q-bar i { display: block; height: 100%; background: var(--leaf); }
.quiz h3 { font-size: 1.5rem; margin-bottom: 16px; }
.opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px) { .opts { grid-template-columns: 1fr; } }
.opt { border: 2px solid var(--line); background: var(--cream); border-radius: 14px; padding: 12px 16px; font: inherit; text-align: left; cursor: pointer; color: var(--ink); transition: border-color .15s, background .15s; }
.opt:hover:not(:disabled) { border-color: var(--leaf); background: var(--lime-soft); }
.opt:disabled { cursor: default; }
.opt.right { border-color: var(--leaf); background: #d9f1bf; font-weight: 700; }
.opt.wrong { border-color: var(--red); background: #fbe0dc; }
.explain { margin: 16px 0 12px; padding: 12px 16px; background: var(--lime-soft); border-radius: 12px; }
.quiz-end { text-align: center; }
.quiz-end .big { font-family: 'Jua', sans-serif; font-size: 3.4rem; color: var(--leaf-d); margin: 0; }
.result { display: grid; grid-template-columns: 180px 1fr; gap: 20px; align-items: center; }
.result-art { background: linear-gradient(180deg, #f4fbe8, #e3f3c8); border-radius: var(--radius); padding: 10px; }
.result-art svg { width: 100%; height: auto; display: block; }
.result h3 { font-size: 2rem; margin-bottom: 8px; }
.result p { margin: 0 0 12px; }
@media (max-width: 560px) { .result { grid-template-columns: 1fr; } .result-art { max-width: 180px; } }

/* fact box */
.factbox { max-width: 760px; margin: 90px auto 0; padding: 32px 24px; text-align: center; background: var(--card); border: 2px dashed var(--leaf); border-radius: var(--radius); }
.fact { font-family: 'Jua', sans-serif; font-size: clamp(1.2rem, 3vw, 1.6rem); line-height: 1.5; margin: 6px 0 18px; min-height: 3em; }
@media (max-width: 800px) { .factbox { margin-left: 16px; margin-right: 16px; } }

.foot { text-align: center; color: var(--muted); padding: 60px 20px 40px; }
.foot p { margin: 4px 0; }