:root{
  --bg: #0f1410;
  --bg-alt: #141b14;
  --panel: #1a2119;
  --panel-border: #2a3527;
  --forest: #2f5233;
  --forest-light: #4c7a4f;
  --amber: #e8a13a;
  --amber-light: #ffc866;
  --danger: #d9503f;
  --text: #eef1e9;
  --text-dim: #a7b3a0;
  --radius: 14px;
  --font-display: "Bungee", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.wrap{
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

a{ color: inherit; text-decoration: none; }

img{ max-width: 100%; display: block; }

/* ---------- background ---------- */
.bg-layer{
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bg-glow{
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
}
.bg-glow--amber{
  width: 520px; height: 520px;
  background: var(--amber);
  top: -160px; right: -120px;
}
.bg-glow--green{
  width: 620px; height: 620px;
  background: var(--forest-light);
  bottom: -220px; left: -180px;
}
.bg-trees{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 40vh;
  background:
    linear-gradient(transparent, var(--bg) 92%),
    repeating-linear-gradient(115deg, #17201699 0 40px, #10160f99 40px 80px);
  opacity: 0.6;
}

/* ---------- header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(15,20,16,0.72);
  border-bottom: 1px solid var(--panel-border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-emoji{ font-size: 1.8rem; }
.brand-text{
  font-family: var(--font-display);
  font-size: 0.72rem;
  line-height: 1.15;
  letter-spacing: 0.5px;
  color: var(--amber-light);
}
.site-nav{
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.site-nav a:hover{ color: var(--text); }
.nav-cta{
  background: var(--amber);
  color: #24170a;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 700;
}
.nav-cta:hover{ background: var(--amber-light); color: #24170a; }

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary{
  background: linear-gradient(135deg, var(--amber-light), var(--amber));
  color: #241505;
  box-shadow: 0 8px 24px -8px rgba(232,161,58,0.6);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 12px 28px -8px rgba(232,161,58,0.75); }
.btn-ghost{
  border-color: var(--panel-border);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--forest-light); background: var(--panel); }
.btn-wide{ width: 100%; margin-top: 18px; }
.btn-lg{ padding: 18px 40px; font-size: 1.1rem; }

/* ---------- hero ---------- */
.hero{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding: 72px 24px 56px;
}
.eyebrow{
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--amber-light);
  font-weight: 700;
  margin: 0 0 14px;
}
.hero-title{
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.25;
  margin: 0 0 20px;
}
.hero-title .accent{ color: var(--amber-light); }
.hero-sub{
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: 0 0 32px;
}
.hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}
.hero-badges{
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* ---------- hero art ---------- */
.hero-art{
  position: relative;
  height: 380px;
}
.scene{
  position: relative;
  height: 100%;
  border-radius: 24px;
  background: linear-gradient(180deg, #1b2a1c 0%, #12190f 70%, #0c110b 100%);
  border: 1px solid var(--panel-border);
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
}
.scene-ground{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 90px;
  background: linear-gradient(180deg, #3a4a2c, #212d19);
}
.scene-danger{
  position: absolute;
  top: 20px; right: 20px;
  background: rgba(217,80,63,0.18);
  border: 1px solid rgba(217,80,63,0.55);
  color: #ff9d8c;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  letter-spacing: 1px;
}
.scene-coin{
  position: absolute;
  font-size: 1.6rem;
  animation: coin-float 2.6s ease-in-out infinite;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.4));
}
.scene-coin--1{ top: 38%; left: 20%; animation-delay: 0s; }
.scene-coin--2{ top: 26%; left: 62%; animation-delay: 0.6s; }
.scene-coin--3{ top: 52%; left: 78%; animation-delay: 1.2s; }
.scene-runner{
  position: absolute;
  bottom: 78px; left: 22%;
  font-size: 2.6rem;
  animation: runner-move 3.2s ease-in-out infinite;
  filter: drop-shadow(0 6px 8px rgba(0,0,0,0.5));
}
.scene-bear{
  position: absolute;
  bottom: 74px; right: 14%;
  font-size: 3.2rem;
  transform: scaleX(-1);
  animation: bear-chase 3.2s ease-in-out infinite;
  filter: drop-shadow(0 6px 8px rgba(0,0,0,0.5));
}
@keyframes coin-float{
  0%, 100%{ transform: translateY(0) rotate(0deg); }
  50%{ transform: translateY(-10px) rotate(180deg); }
}
@keyframes runner-move{
  0%, 100%{ transform: translateX(0); }
  50%{ transform: translateX(30px); }
}
@keyframes bear-chase{
  0%, 100%{ transform: scaleX(-1) translateX(0); }
  50%{ transform: scaleX(-1) translateX(-36px); }
}

/* ---------- sections ---------- */
main section{ padding: 64px 24px; }
.section-title{
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  text-align: center;
  margin: 0 0 12px;
}
.section-sub{
  text-align: center;
  color: var(--text-dim);
  max-width: 56ch;
  margin: 0 auto 40px;
}

/* ---------- play / iframe ---------- */
.play-section{ text-align: center; }
.game-frame{
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  background: #0b0f0a;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7);
  max-width: 880px;
  margin: 0 auto;
}
.game-frame-bar{
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #171f15;
  border-bottom: 1px solid var(--panel-border);
}
.dot{ width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot--r{ background: #e0605a; }
.dot--y{ background: #e3b34f; }
.dot--g{ background: #58b368; }
.game-frame-url{
  margin-left: 10px;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.game-frame-body{
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #000;
}
.game-frame-body iframe{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- cards ---------- */
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 26px 22px;
}
.card-icon{ font-size: 1.9rem; margin-bottom: 12px; }
.card h3{ margin: 0 0 8px; font-size: 1.05rem; }
.card p{ margin: 0; color: var(--text-dim); font-size: 0.92rem; }
.card strong{ color: var(--amber-light); }

/* ---------- levels ---------- */
.level-table{
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 780px;
  margin: 0 auto;
}
.level-row{
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr 1.3fr;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--panel-border);
}
.level-row:last-child{ border-bottom: none; }
.level-row--head{
  background: #171f15;
  color: var(--text-dim);
  font-size: 0.82rem;
  letter-spacing: 0.5px;
}
.level-row:not(.level-row--head){ background: var(--panel); }
.level-name{ font-weight: 700; }
.level-name--easy{ color: #7fd08c; }
.level-name--normal{ color: var(--amber-light); }
.level-name--hard{ color: #ff8a7a; }

/* ---------- pricing ---------- */
.price-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 860px;
  margin: 0 auto;
}
.price-card{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
}
.price-card--highlight{
  border-color: var(--amber);
  background: linear-gradient(180deg, #21260f, #1a2119);
  box-shadow: 0 20px 40px -20px rgba(232,161,58,0.35);
}
.price-badge{
  position: absolute;
  top: -13px; right: 24px;
  background: var(--amber);
  color: #241505;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.price-tag{
  font-size: 0.78rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin: 0 0 6px;
}
.price-value{
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 12px;
}
.price-value span{
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-dim);
  font-weight: 400;
}
.price-desc{ color: var(--text-dim); font-size: 0.92rem; margin: 0 0 18px; }
.price-list{ list-style: none; padding: 0; margin: 0; font-size: 0.92rem; }
.price-list li{ margin-bottom: 8px; color: var(--text); }

/* ---------- cta ---------- */
.cta-section{ padding-bottom: 96px; }
.cta-box{
  text-align: center;
  background: linear-gradient(135deg, #22301f, #172018);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 64px 32px;
}
.cta-box h2{
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  margin: 0 0 12px;
}
.cta-box p{ color: var(--text-dim); margin: 0 0 28px; }

/* ---------- footer ---------- */
.site-footer{
  border-top: 1px solid var(--panel-border);
  padding: 28px 24px;
}
.footer-inner{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.footer-inner a:hover{ color: var(--amber-light); }

/* ---------- responsive ---------- */
@media (max-width: 860px){
  .card-grid{ grid-template-columns: repeat(2, 1fr); }
  .price-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .hero{ grid-template-columns: 1fr; padding-top: 40px; }
  .hero-art{ height: 300px; order: -1; }
  .site-nav a:not(.nav-cta){ display: none; }
  .level-row{ grid-template-columns: 1fr 1fr; row-gap: 6px; }
  .level-row span:nth-child(4){ grid-column: 1 / -1; }
}

@media (max-width: 560px){
  .card-grid{ grid-template-columns: 1fr; }
}