:root {
  --bg: #0a0a0c;
  --bg-alt: #15151a;
  --card: #1c1c22;
  --border: #2a2a32;
  --text: #fff;
  --text-sub: #b0b0b8;
  --accent: #ffcc00;
  --accent-2: #ff3b30;
  --accent-3: #34c759;
  --gold: #d4af37;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic Bold', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }

/* ============ HERO ============ */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse at top, #2a1f00 0%, var(--bg) 60%),
    var(--bg);
  padding: 100px 20px 80px;
  text-align: center;
  overflow: hidden;
  border-bottom: 4px solid var(--accent);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 30px, rgba(255,204,0,0.03) 30px, rgba(255,204,0,0.03) 31px);
  pointer-events: none;
}

.brand {
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 700;
}

.hero-title {
  font-size: clamp(48px, 12vw, 120px);
  font-weight: 900;
  line-height: 0.95;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.hero-title span {
  display: block;
}

.line-1 { color: #fff; }
.line-2 {
  color: var(--accent);
  font-size: 1.3em;
  text-shadow: 6px 6px 0 var(--accent-2);
  transform: rotate(-2deg);
  display: inline-block !important;
  margin: 0.05em 0;
}
.line-3 { color: #fff; }
.line-4 {
  color: var(--accent);
  font-size: 1.15em;
  -webkit-text-stroke: 2px var(--bg);
}

.tagline {
  color: var(--text-sub);
  font-size: clamp(14px, 3vw, 18px);
  margin-bottom: 36px;
  font-weight: 500;
}

.yt-link {
  display: inline-block;
  padding: 16px 36px;
  background: var(--accent);
  color: #000;
  border-radius: 999px;
  font-weight: 900;
  font-size: 16px;
  border: 3px solid #000;
  box-shadow: 6px 6px 0 var(--accent-2);
  transition: transform 0.1s, box-shadow 0.1s;
}
.yt-link:hover {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--accent-2);
}
.yt-link.big {
  font-size: 20px;
  padding: 20px 48px;
}

/* スタンプ */
.stamp {
  position: absolute;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: var(--accent-2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 900;
  font-size: 20px;
  line-height: 1.2;
  border: 4px dashed #fff;
  z-index: 2;
}
.stamp-1 {
  top: 60px;
  left: 8%;
  transform: rotate(-15deg);
  background: var(--accent-2);
}
.stamp-2 {
  top: 80px;
  right: 8%;
  transform: rotate(12deg);
  background: var(--accent-3);
  font-size: 22px;
}

@media (max-width: 768px) {
  .stamp { width: 90px; height: 90px; font-size: 14px; border-width: 3px; }
  .stamp-2 { font-size: 16px; }
  .stamp-1 { top: 20px; left: 4%; }
  .stamp-2 { top: 30px; right: 4%; }
  .hero { padding: 80px 16px 60px; }
}

/* ============ MARQUEE ============ */
.banner {
  background: var(--accent);
  color: #000;
  padding: 20px 0;
  border-top: 4px solid #000;
  border-bottom: 4px solid #000;
  overflow: hidden;
  white-space: nowrap;
}
.marquee {
  display: inline-flex;
  gap: 40px;
  animation: scroll 25s linear infinite;
  font-size: 24px;
  font-weight: 900;
  white-space: nowrap;
}
.marquee span {
  flex-shrink: 0;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ MAIN ============ */
main { max-width: 1080px; margin: 0 auto; padding: 80px 20px; }

/* ============ WHY ============ */
.why {
  text-align: center;
  margin-bottom: 80px;
  padding: 40px 24px;
  background: var(--bg-alt);
  border: 3px solid var(--accent);
  border-radius: 24px;
  position: relative;
}
.why::before {
  content: "?";
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #000;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 900;
  border: 3px solid #000;
}
.why h2 {
  font-size: clamp(20px, 4vw, 28px);
  margin-bottom: 20px;
  margin-top: 12px;
}
.why-text {
  font-size: clamp(15px, 3vw, 18px);
  color: var(--text-sub);
  line-height: 1.8;
  font-weight: 600;
}

/* ============ APPS ============ */
.apps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-bottom: 100px;
}

.app-card {
  background: var(--card);
  border: 3px solid var(--border);
  border-radius: 24px;
  padding: 40px 28px 32px;
  text-align: center;
  position: relative;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.app-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 0 var(--accent-2);
}

.card-1 { --card-accent: var(--accent); }
.card-2 { --card-accent: var(--accent-3); }
.card-3 { --card-accent: var(--gold); }

.app-no {
  position: absolute;
  top: -16px;
  left: 24px;
  background: var(--card-accent);
  color: #000;
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 900;
  font-size: 14px;
  border: 3px solid #000;
}

.app-icon {
  width: 110px;
  height: 110px;
  border-radius: 26px;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.app-card h2 {
  font-size: 26px;
  margin-bottom: 12px;
  font-weight: 900;
}

.catch {
  font-size: 18px;
  color: var(--card-accent);
  margin-bottom: 20px;
  font-weight: 800;
  font-style: italic;
}

.desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 24px;
  font-weight: 500;
}

.features {
  list-style: none;
  text-align: left;
  margin-bottom: 28px;
  padding: 16px 20px;
  background: var(--bg);
  border-radius: 12px;
}
.features li {
  font-size: 13px;
  color: var(--text-sub);
  padding: 6px 0 6px 24px;
  position: relative;
  font-weight: 600;
}
.features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--card-accent);
  font-weight: 900;
  font-size: 16px;
}

.appstore-btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
  background: var(--bg);
  color: var(--text-sub);
  border: 2px solid var(--border);
  text-decoration: none;
}
.appstore-btn.live {
  background: var(--card-accent);
  color: #000;
  border: 3px solid #000;
  box-shadow: 4px 4px 0 var(--accent-2);
  transition: transform 0.1s, box-shadow 0.1s;
}
.appstore-btn.live:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--accent-2);
  text-decoration: none;
}

/* ============ STORY ============ */
.story {
  text-align: center;
  padding: 60px 24px;
  background: var(--bg-alt);
  border-radius: 24px;
  margin-bottom: 80px;
  border: 2px solid var(--border);
}
.story h2 {
  font-size: clamp(20px, 4vw, 28px);
  margin-bottom: 32px;
  color: var(--accent);
}
blockquote {
  font-size: clamp(18px, 4vw, 26px);
  font-weight: 800;
  color: #fff;
  line-height: 1.6;
  position: relative;
  padding: 0 30px;
  max-width: 720px;
  margin: 0 auto 16px;
}
blockquote::before, blockquote::after {
  content: '"';
  font-size: 80px;
  color: var(--accent);
  position: absolute;
  font-family: serif;
  line-height: 1;
}
blockquote::before { top: -20px; left: -10px; }
blockquote::after { bottom: -50px; right: -10px; }
.story-by {
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 600;
  margin-top: 24px;
}

/* ============ CTA ============ */
.cta {
  text-align: center;
  padding: 60px 24px;
  background: linear-gradient(135deg, #2a1f00, #1a1a20);
  border-radius: 24px;
  border: 3px solid var(--accent);
}
.cta h2 {
  font-size: clamp(24px, 5vw, 36px);
  margin-bottom: 16px;
  font-weight: 900;
}
.cta p {
  color: var(--text-sub);
  margin-bottom: 32px;
  font-size: 16px;
  font-weight: 600;
}

/* ============ FOOTER ============ */
footer {
  border-top: 4px solid var(--accent);
  padding: 40px 20px;
  text-align: center;
  background: var(--bg-alt);
  margin-top: 60px;
}
footer nav { margin-bottom: 16px; }
footer nav a {
  margin: 0 16px;
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 600;
}
.copy {
  font-size: 12px;
  color: var(--text-sub);
}

@media (max-width: 600px) {
  main { padding: 60px 16px; }
  .apps { gap: 32px; }
}