/* ============ RESET & BASE ============ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  background: #ffffff;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
.page-wrapper {
  max-width: 750px;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
  background: #fff;
  container-type: inline-size;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; }

/* Shared: layered section pattern */
.section-bg { width: 100%; display: block; }
.section-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

/* ============ 1. HERO (375x452) ============ */
.sec-hero { position: relative; }
.sec-hero img { width: 100%; }
.sec-hero.glitch-active {
  overflow: hidden;
}
.sec-hero.glitch-active img {
  animation: glitchFlicker 0.15s steps(1) infinite;
}
@keyframes glitchFlicker {
  0%   { opacity: 1; }
  10%  { opacity: 0.7; }
  20%  { opacity: 1; }
  50%  { opacity: 0.85; }
  70%  { opacity: 1; }
  90%  { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ============ GAME-STYLE SCROLL ANIMATIONS ============ */
.ga-hidden {
  opacity: 0;
  visibility: hidden;
}

/* --- Pixel spawn (blur + brightness flash) --- */
@keyframes gaPixelIn {
  0%   { opacity: 0; filter: blur(12px) brightness(3); transform: scale(0.85); }
  25%  { opacity: 0.5; filter: blur(6px) brightness(2); transform: scale(1.04); }
  50%  { opacity: 0.8; filter: blur(2px) brightness(1.3); transform: scale(0.98); }
  75%  { opacity: 0.95; filter: blur(0) brightness(1.05); transform: scale(1.01); }
  100% { opacity: 1; filter: none; transform: scale(1); }
}
.ga-pixel-in { animation: gaPixelIn 0.8s ease-out forwards; }

/* --- Slide left with bounce --- */
@keyframes gaSlideLeft {
  0%   { opacity: 0; transform: translateX(-80px) skewX(5deg); }
  40%  { opacity: 0.8; transform: translateX(12px) skewX(-2deg); }
  60%  { opacity: 1; transform: translateX(-6px) skewX(1deg); }
  80%  { transform: translateX(3px) skewX(0); }
  100% { opacity: 1; transform: translateX(0) skewX(0); }
}
.ga-slide-left { animation: gaSlideLeft 0.7s ease-out forwards; }

/* --- Slide right with bounce --- */
@keyframes gaSlideRight {
  0%   { opacity: 0; transform: translateX(80px) skewX(-5deg); }
  40%  { opacity: 0.8; transform: translateX(-12px) skewX(2deg); }
  60%  { opacity: 1; transform: translateX(6px) skewX(-1deg); }
  80%  { transform: translateX(-3px) skewX(0); }
  100% { opacity: 1; transform: translateX(0) skewX(0); }
}
.ga-slide-right { animation: gaSlideRight 0.7s ease-out forwards; }

/* --- Pop scale (item pickup) --- */
@keyframes gaPop {
  0%   { opacity: 0; transform: scale(0.2) rotate(-8deg); }
  35%  { opacity: 1; transform: scale(1.15) rotate(2deg); }
  55%  { transform: scale(0.92) rotate(-1deg); }
  75%  { transform: scale(1.04) rotate(0); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}
.ga-pop { animation: gaPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }

/* --- Drop (score counter) --- */
@keyframes gaDrop {
  0%   { opacity: 0; transform: translateY(-60px) scaleY(0.5) scaleX(1.1); }
  35%  { opacity: 1; transform: translateY(12px) scaleY(1.08) scaleX(0.96); }
  55%  { transform: translateY(-6px) scaleY(0.97) scaleX(1.02); }
  75%  { transform: translateY(3px) scaleY(1.01); }
  100% { opacity: 1; transform: translateY(0) scaleY(1) scaleX(1); }
}
.ga-drop { animation: gaDrop 0.7s ease-out forwards; }

/* --- Rise (HP bar) --- */
@keyframes gaRise {
  0%   { opacity: 0; transform: translateY(60px) scaleX(0.9); }
  40%  { opacity: 0.8; transform: translateY(-10px) scaleX(1.02); }
  65%  { opacity: 1; transform: translateY(5px) scaleX(0.99); }
  85%  { transform: translateY(-2px); }
  100% { opacity: 1; transform: translateY(0) scaleX(1); }
}
.ga-rise { animation: gaRise 0.7s ease-out forwards; }

/* --- Heavy glitch reveal (scanline + RGB shift) --- */
@keyframes gaGlitchIn {
  0%   { opacity: 0; transform: translateX(-30px) scaleX(1.3); filter: hue-rotate(120deg) brightness(3) saturate(3); clip-path: inset(40% 0 40% 0); }
  10%  { opacity: 0.6; transform: translateX(25px) scaleX(0.9); filter: hue-rotate(-90deg) brightness(2) saturate(2); clip-path: inset(20% 0 60% 0); }
  20%  { opacity: 0.3; transform: translateX(-15px) scaleX(1.1); filter: hue-rotate(60deg) brightness(1.8); clip-path: inset(60% 0 10% 0); }
  30%  { opacity: 0.8; transform: translateX(10px) scaleX(0.95); filter: hue-rotate(-30deg) brightness(1.5); clip-path: inset(10% 0 30% 0); }
  45%  { opacity: 0.5; transform: translateX(-5px); filter: hue-rotate(15deg) brightness(1.3); clip-path: inset(0 0 0 0); }
  60%  { opacity: 0.9; transform: translateX(3px); filter: hue-rotate(-5deg) brightness(1.1); }
  75%  { opacity: 1; transform: translateX(-1px); filter: none; }
  100% { opacity: 1; transform: translateX(0); filter: none; clip-path: none; }
}
.ga-glitch-in { animation: gaGlitchIn 1s steps(8) forwards; }

/* --- Card slam (3D flip + slam down) --- */
@keyframes gaCardSlam {
  0%   { opacity: 0; transform: perspective(600px) rotateX(-70deg) translateY(-30px) scale(0.8); }
  40%  { opacity: 1; transform: perspective(600px) rotateX(8deg) translateY(5px) scale(1.02); }
  55%  { transform: perspective(600px) rotateX(-4deg) translateY(-3px) scale(0.99); }
  70%  { transform: perspective(600px) rotateX(2deg) translateY(1px); }
  100% { opacity: 1; transform: perspective(600px) rotateX(0) translateY(0) scale(1); }
}
.ga-card-slam { animation: gaCardSlam 0.7s ease-out forwards; }

/* --- Shockwave pop (explosion-like) --- */
@keyframes gaShockwave {
  0%   { opacity: 0; transform: scale(0); filter: brightness(4) blur(4px); }
  20%  { opacity: 0.7; transform: scale(1.3); filter: brightness(2) blur(1px); }
  40%  { opacity: 1; transform: scale(0.85); filter: brightness(1.2) blur(0); }
  60%  { transform: scale(1.08); filter: brightness(1.05); }
  80%  { transform: scale(0.97); filter: none; }
  100% { opacity: 1; transform: scale(1); filter: none; }
}
.ga-shockwave { animation: gaShockwave 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards; }

/* --- Scan reveal (top-down wipe with glow) --- */
@keyframes gaScanReveal {
  0%   { opacity: 0; clip-path: inset(0 0 100% 0); filter: brightness(2) drop-shadow(0 0 10px cyan); }
  30%  { opacity: 1; clip-path: inset(0 0 70% 0); filter: brightness(1.5) drop-shadow(0 0 6px cyan); }
  60%  { clip-path: inset(0 0 30% 0); filter: brightness(1.1) drop-shadow(0 0 2px cyan); }
  85%  { clip-path: inset(0 0 5% 0); filter: none; }
  100% { opacity: 1; clip-path: inset(0 0 0 0); filter: none; }
}
.ga-scan-reveal { animation: gaScanReveal 0.9s ease-out forwards; }

/* --- Zoom crash (rush towards camera) --- */
@keyframes gaZoomCrash {
  0%   { opacity: 0; transform: scale(3) rotate(10deg); filter: blur(15px) brightness(0.3); }
  25%  { opacity: 0.6; transform: scale(1.5) rotate(-3deg); filter: blur(5px) brightness(0.8); }
  50%  { opacity: 1; transform: scale(0.9) rotate(1deg); filter: blur(0) brightness(1.2); }
  70%  { transform: scale(1.05) rotate(0); filter: brightness(1); }
  100% { opacity: 1; transform: scale(1) rotate(0); filter: none; }
}
.ga-zoom-crash { animation: gaZoomCrash 0.8s ease-out forwards; }

/* --- Typewriter columns (slide + clip) --- */
@keyframes gaTypeCol {
  0%   { opacity: 0; transform: translateY(30px); clip-path: inset(0 100% 0 0); }
  40%  { opacity: 1; transform: translateY(0); clip-path: inset(0 50% 0 0); }
  70%  { clip-path: inset(0 10% 0 0); }
  100% { opacity: 1; transform: translateY(0); clip-path: inset(0 0 0 0); }
}
.ga-type-col { animation: gaTypeCol 0.8s ease-out forwards; }

/* --- Shake burst (screen-shake + appear) --- */
@keyframes gaShake {
  0%   { opacity: 0; transform: translate(0, 0) scale(0.9); }
  10%  { opacity: 1; transform: translate(-8px, 4px) scale(1.05); }
  20%  { transform: translate(6px, -6px) scale(0.98); }
  30%  { transform: translate(-5px, 2px) scale(1.02); }
  40%  { transform: translate(4px, -3px) scale(0.99); }
  50%  { transform: translate(-2px, 1px) scale(1.01); }
  65%  { transform: translate(1px, -1px); }
  100% { opacity: 1; transform: translate(0, 0) scale(1); }
}
.ga-shake { animation: gaShake 0.6s ease-out forwards; }

/* --- Power-up glow pulse (for CTAs) --- */
@keyframes gaPowerUp {
  0%   { opacity: 0; transform: scale(0.8); filter: brightness(0.5); }
  30%  { opacity: 1; transform: scale(1.06); filter: brightness(1.8) drop-shadow(0 0 15px rgba(255,50,50,0.8)); }
  50%  { transform: scale(0.97); filter: brightness(1.3) drop-shadow(0 0 8px rgba(255,50,50,0.5)); }
  70%  { transform: scale(1.02); filter: brightness(1.1) drop-shadow(0 0 4px rgba(255,50,50,0.3)); }
  100% { opacity: 1; transform: scale(1); filter: none; }
}
.ga-power-up { animation: gaPowerUp 0.7s ease-out forwards; }

/* --- Spiral in (rotate + scale) --- */
@keyframes gaSpiral {
  0%   { opacity: 0; transform: rotate(-180deg) scale(0); }
  40%  { opacity: 0.8; transform: rotate(20deg) scale(1.1); }
  60%  { opacity: 1; transform: rotate(-8deg) scale(0.95); }
  80%  { transform: rotate(3deg) scale(1.02); }
  100% { opacity: 1; transform: rotate(0) scale(1); }
}
.ga-spiral { animation: gaSpiral 0.8s ease-out forwards; }

/* --- Honki slam (zoom crash + RGB split + shake) --- */
@keyframes gaHonkiSlam {
  0%   { opacity: 0; transform: scale(3) translateY(-30px); filter: blur(20px) brightness(0); }
  12%  { opacity: 0.8; transform: scale(1.1) translateY(5px); filter: blur(2px) brightness(2.5); }
  18%  { opacity: 1; transform: scale(0.97) translateX(-8px); filter: hue-rotate(60deg) brightness(1.8); }
  24%  { transform: scale(1.03) translateX(6px); filter: hue-rotate(-40deg) brightness(1.5); }
  30%  { transform: scale(0.99) translateX(-4px) skewX(2deg); filter: hue-rotate(20deg) brightness(1.3); }
  38%  { transform: scale(1.01) translateX(3px) skewX(-1deg); filter: hue-rotate(-10deg) brightness(1.1); }
  50%  { transform: scale(1) translateX(-1px); filter: none; }
  60%  { transform: scale(1.02); filter: brightness(1.15) drop-shadow(0 0 20px rgba(255,0,100,0.6)); }
  75%  { transform: scale(0.99); filter: brightness(1.05) drop-shadow(0 0 10px rgba(255,0,100,0.3)); }
  100% { opacity: 1; transform: scale(1); filter: none; }
}
.ga-honki-slam { animation: gaHonkiSlam 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards; }

/* --- Title glitch type (char-by-char feel with heavy glitch) --- */
@keyframes gaTitleGlitch {
  0%   { opacity: 0; transform: translateX(-100%) scaleX(0.3); filter: hue-rotate(180deg) brightness(3) saturate(5); clip-path: inset(30% 0 30% 0); }
  8%   { opacity: 0.5; transform: translateX(40px) scaleX(1.2); filter: hue-rotate(-120deg) brightness(2); clip-path: inset(50% 0 20% 0); }
  16%  { opacity: 0.3; transform: translateX(-25px) scaleX(0.9); filter: hue-rotate(90deg) brightness(2.5); clip-path: inset(10% 0 60% 0); }
  24%  { opacity: 0.7; transform: translateX(15px) scaleX(1.05); filter: hue-rotate(-45deg) brightness(1.6); clip-path: inset(0 0 0 0); }
  35%  { opacity: 0.9; transform: translateX(-8px); filter: hue-rotate(15deg) brightness(1.3); }
  45%  { opacity: 1; transform: translateX(4px); filter: hue-rotate(-5deg) brightness(1.1); }
  55%  { transform: translateX(0); filter: none; }
  65%  { transform: scale(1.06); filter: brightness(1.3) drop-shadow(0 0 15px rgba(0,200,255,0.7)); }
  80%  { transform: scale(0.98); filter: brightness(1.1) drop-shadow(0 0 5px rgba(0,200,255,0.3)); }
  100% { opacity: 1; transform: scale(1); filter: none; clip-path: none; }
}
.ga-title-glitch { animation: gaTitleGlitch 1.4s steps(10) forwards; }

/* --- Dots scatter-in (particles converging) --- */
@keyframes gaDotsScatter {
  0%   { opacity: 0; transform: translate(-50%, calc(-50% + 50px)) scale(1.8) rotate(15deg); filter: blur(10px) brightness(0.3); }
  15%  { opacity: 0.3; transform: translate(-50%, calc(-50% + 50px)) scale(0.7) rotate(-8deg); filter: blur(6px) brightness(1.5); }
  30%  { opacity: 0.6; transform: translate(-50%, calc(-50% + 50px)) scale(1.15) rotate(4deg); filter: blur(3px) brightness(1.2); }
  50%  { opacity: 0.8; transform: translate(-50%, calc(-50% + 50px)) scale(0.95) rotate(-2deg); filter: blur(1px) brightness(1.1); }
  70%  { opacity: 0.95; transform: translate(-50%, calc(-50% + 50px)) scale(1.03) rotate(1deg); filter: none; }
  85%  { opacity: 1; transform: translate(-50%, calc(-50% + 50px)) scale(0.99); }
  100% { opacity: 1; transform: translate(-50%, calc(-50% + 50px)) scale(1); filter: none; }
}
.ga-dots-scatter { animation: gaDotsScatter 1.6s ease-out forwards; }

/* --- Dots pulse-in (for absolute positioned dots — uses only opacity + filter) --- */
@keyframes gaDotsPulse {
  0%   { opacity: 0; filter: brightness(0) blur(8px); }
  15%  { opacity: 0.5; filter: brightness(3) blur(4px) hue-rotate(60deg); }
  25%  { opacity: 0.2; filter: brightness(0.5) blur(6px); }
  40%  { opacity: 0.7; filter: brightness(2) blur(2px) hue-rotate(-30deg); }
  55%  { opacity: 0.4; filter: brightness(1.5) blur(3px); }
  70%  { opacity: 0.9; filter: brightness(1.2) blur(0); }
  85%  { opacity: 1; filter: brightness(1.05); }
  100% { opacity: 1; filter: none; }
}
.ga-dots-pulse { animation: gaDotsPulse 1.2s steps(8) forwards; }

/* --- Banner slide (preserves rotate/scale) --- */
@keyframes gaBannerSlide {
  0%   { opacity: 0; transform: rotate(-4deg) scale(1.15) translateX(80px); }
  60%  { opacity: 1; transform: rotate(-4deg) scale(1.15) translateX(-8px); }
  80%  { transform: rotate(-4deg) scale(1.15) translateX(3px); }
  100% { opacity: 1; transform: rotate(-4deg) scale(1.15) translateX(0); }
}
.ga-banner-slide { animation: gaBannerSlide 0.7s ease-out forwards; }

/* --- Marquee band-1 glitch (preserves rotate(-4deg) scale(1.15)) --- */
@keyframes gaBand1Glitch {
  0%   { opacity: 0; transform: rotate(-4deg) scale(1.15) translateX(-20px); filter: hue-rotate(120deg) brightness(3); }
  15%  { opacity: 0.6; transform: rotate(-4deg) scale(1.15) translateX(15px); filter: hue-rotate(-80deg) brightness(2); }
  30%  { opacity: 0.3; transform: rotate(-4deg) scale(1.15) translateX(-10px); filter: hue-rotate(50deg) brightness(1.8); }
  45%  { opacity: 0.8; transform: rotate(-4deg) scale(1.15) translateX(6px); filter: hue-rotate(-20deg) brightness(1.4); }
  60%  { opacity: 0.5; transform: rotate(-4deg) scale(1.15) translateX(-3px); filter: hue-rotate(10deg) brightness(1.2); }
  75%  { opacity: 1; transform: rotate(-4deg) scale(1.15) translateX(1px); filter: none; }
  100% { opacity: 1; transform: rotate(-4deg) scale(1.15) translateX(0); filter: none; }
}
.ga-band1-scan { animation: gaBand1Glitch 1s steps(8) forwards; }

/* --- Marquee band-2 glitch (preserves rotate(6deg) scale(1.15)) --- */
@keyframes gaBand2Glitch {
  0%   { opacity: 0; transform: rotate(6deg) scale(1.15) translateX(20px); filter: hue-rotate(-120deg) brightness(3); }
  15%  { opacity: 0.6; transform: rotate(6deg) scale(1.15) translateX(-15px); filter: hue-rotate(80deg) brightness(2); }
  30%  { opacity: 0.3; transform: rotate(6deg) scale(1.15) translateX(10px); filter: hue-rotate(-50deg) brightness(1.8); }
  45%  { opacity: 0.8; transform: rotate(6deg) scale(1.15) translateX(-6px); filter: hue-rotate(20deg) brightness(1.4); }
  60%  { opacity: 0.5; transform: rotate(6deg) scale(1.15) translateX(3px); filter: hue-rotate(-10deg) brightness(1.2); }
  75%  { opacity: 1; transform: rotate(6deg) scale(1.15) translateX(-1px); filter: none; }
  100% { opacity: 1; transform: rotate(6deg) scale(1.15) translateX(0); filter: none; }
}
.ga-band2-scan { animation: gaBand2Glitch 1s steps(8) forwards; }

/* --- Frame flash (for absolute positioned elements — opacity + filter only) --- */
@keyframes gaFrameFlash {
  0%   { opacity: 0; filter: brightness(0) blur(6px); }
  20%  { opacity: 0.6; filter: brightness(2.5) blur(2px) hue-rotate(40deg); }
  35%  { opacity: 0.3; filter: brightness(0.8) blur(4px); }
  50%  { opacity: 0.8; filter: brightness(1.8) blur(1px) hue-rotate(-20deg); }
  70%  { opacity: 1; filter: brightness(1.2) blur(0); }
  100% { opacity: 1; filter: none; }
}
.ga-frame-flash { animation: gaFrameFlash 0.8s steps(6) forwards; }

/* --- Warp in (stretch + squeeze distortion) --- */
@keyframes gaWarpIn {
  0%   { opacity: 0; transform: scaleX(3) scaleY(0.1); filter: blur(10px) brightness(3); }
  15%  { opacity: 0.7; transform: scaleX(0.6) scaleY(1.4); filter: blur(4px) brightness(2); }
  30%  { opacity: 0.9; transform: scaleX(1.3) scaleY(0.8); filter: blur(2px) brightness(1.5); }
  45%  { transform: scaleX(0.9) scaleY(1.1); filter: blur(0) brightness(1.2); }
  60%  { transform: scaleX(1.05) scaleY(0.97); filter: none; }
  75%  { transform: scaleX(0.98) scaleY(1.01); }
  100% { opacity: 1; transform: scaleX(1) scaleY(1); filter: none; }
}
.ga-warp-in { animation: gaWarpIn 0.9s ease-out forwards; }

/* --- Level-up card (rise + flash + number counter feel) --- */
@keyframes gaLevelUp {
  0%   { opacity: 0; transform: translateY(80px) scale(0.7); filter: brightness(0) blur(5px); }
  15%  { opacity: 0.8; transform: translateY(-5px) scale(1.05); filter: brightness(2.5) blur(0); }
  20%  { opacity: 1; transform: translateY(0) scale(1); filter: brightness(3); }
  25%  { filter: brightness(0.8); }
  30%  { filter: brightness(2); }
  35%  { filter: brightness(1); }
  45%  { transform: translateY(0) scale(1.03); filter: brightness(1.4) drop-shadow(0 0 12px rgba(100,200,255,0.8)); }
  60%  { transform: scale(0.98); filter: brightness(1.1) drop-shadow(0 0 6px rgba(100,200,255,0.4)); }
  80%  { transform: scale(1.01); filter: none; }
  100% { opacity: 1; transform: scale(1); filter: none; }
}
.ga-level-up { animation: gaLevelUp 0.8s ease-out forwards; }

/* --- Deco glitch wander (for absolute positioned — uses filter + clip-path only) --- */
@keyframes gaDecoGlitch {
  0%   { opacity: 0; filter: brightness(0); clip-path: inset(0 100% 0 0); }
  8%   { opacity: 0.8; filter: brightness(3) hue-rotate(90deg); clip-path: inset(30% 0 40% 0); }
  16%  { opacity: 0.3; filter: brightness(0.5) hue-rotate(-60deg); clip-path: inset(60% 0 10% 0); }
  24%  { opacity: 0.9; filter: brightness(2) hue-rotate(40deg) saturate(3); clip-path: inset(10% 0 50% 0); }
  32%  { opacity: 0.4; filter: brightness(1.5) hue-rotate(-30deg); clip-path: inset(0 40% 0 20%); }
  40%  { opacity: 0.7; filter: brightness(2.5) hue-rotate(60deg); clip-path: inset(20% 0 20% 0); }
  50%  { opacity: 0.5; filter: brightness(0.8); clip-path: inset(50% 0 0 0); }
  60%  { opacity: 0.9; filter: brightness(1.8) hue-rotate(-15deg); clip-path: inset(0 10% 10% 0); }
  72%  { opacity: 1; filter: brightness(1.3); clip-path: inset(5% 0 5% 0); }
  85%  { filter: brightness(1.1); clip-path: inset(0 0 0 0); }
  100% { opacity: 1; filter: none; clip-path: none; }
}
.ga-deco-glitch { animation: gaDecoGlitch 1.5s steps(12) forwards; }

/* --- Bubble bounce in + infinite wobble --- */
@keyframes gaBubbleIn {
  0%   { opacity: 0; transform: scale(0.3); }
  30%  { opacity: 1; transform: scale(1.08); }
  50%  { transform: scale(0.95); }
  70%  { transform: scale(1.03); }
  85%  { transform: scale(0.99); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes gaBubbleWobble {
  0%   { transform: scale(1) translateY(0); }
  25%  { transform: scale(1.03) translateY(-4px); }
  50%  { transform: scale(0.97) translateY(2px); }
  75%  { transform: scale(1.02) translateY(-3px); }
  100% { transform: scale(1) translateY(0); }
}
.ga-bubble {
  animation: gaBubbleIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards,
             gaBubbleWobble 2s ease-in-out 0.8s infinite;
}

/* --- BG flash (background dramatic reveal) --- */
@keyframes gaBgFlash {
  0%   { opacity: 0; filter: brightness(0); }
  15%  { opacity: 0.4; filter: brightness(3) saturate(2); }
  25%  { opacity: 0.2; filter: brightness(0.5); }
  40%  { opacity: 0.7; filter: brightness(1.8) saturate(1.5); }
  55%  { opacity: 0.5; filter: brightness(0.8); }
  70%  { opacity: 0.9; filter: brightness(1.2); }
  85%  { opacity: 1; filter: brightness(1.05); }
  100% { opacity: 1; filter: none; }
}
.ga-bg-flash { animation: gaBgFlash 1s steps(6) forwards; }

/* ============ 2. LOGO + CTA (375x309) ============ */
.sec-logo-cta {
  background: #ffffff;
  padding: 3.5% 0 5.2%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.logo-img {
  width: 80%; /* 300/375 */
  margin-bottom: 6%;
}
.cta-container {
  width: 93.6%; /* 351/375 */
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.cta-item {
  text-align: center;
}
.cta-label {
  width: 74.4%; /* 261/351 */
  margin: 0 auto -16px;
  position: relative;
  z-index: 1;
}
.cta-btn-img {
  width: 100%;
}
/* CTA 2 (no logo) */
.sec-cta-only {
  padding-top: 5.2%;
}
.sec-cta-only .logo-img {
  display: none;
}

/* ============ 3. KADAI (375x549) ============ */
.sec-kadai {
  position: relative;
  overflow: hidden;
}
.kadai-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 3.2%; /* 12px/375 */
  gap: 2.7%; /* ~10px */
}
.kadai-tags {
  width: 100%;
}
.kadai-headline {
  width: 82.4%; /* 309/375 */
}
.kadai-red {
  width: 95%;
  margin-top: 3%;
  align-self: center;
}
.kadai-dark {
  width: 95%;
  align-self: center;
}

/* ============ 4. ANIME-DA (375x811) ============ */
.sec-animeda {
  position: relative;
  overflow: hidden;
}
.animeda-gradient {
  display: none;
}
.animeda-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 6.4% 3.2% 8.1%; /* 24px 12px 66px */
  gap: 5.6%; /* 21px */
  z-index: 2;
}
.animeda-honki {
  width: 93.6%; /* 351/375 */
}
.animeda-title {
  width: 70.6%; /* 264.7/375 */
  align-self: center;
  margin-top: -50px;
}
.animeda-dots {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, calc(-50% + 50px));
  width: 95%;
  pointer-events: none;
  z-index: 3;
}

/* ============ 5. REASONS (375x1260) ============ */
.sec-reasons {
  margin-top: -30px;
  position: relative;
  z-index: 4;
  padding: 2.5% 3.2% 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.reasons-bg-deco {
  position: absolute;
  top: -15px;
  left: 0;
  width: 100%;
  pointer-events: none;
  z-index: 0;
}
.reasons-heading {
  position: relative;
  z-index: 10;
  width: 93.6%; /* 351/375 */
  margin-bottom: 3.5%;
}
.reasons-container {
  position: relative;
  width: 100%;
}
.reasons-bg-img {
  width: 100%;
  display: block;
}
.reasons-cards {
  position: absolute;
  top: 0; left: 10px;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  padding: 1.5%;
}
.reasons-cards img {
  width: 105%;
  max-width: none;
}

/* ============ 6. MARQUEE BAND (961x178 overflows) ============ */
.sec-marquee {
  overflow: visible;
  background: transparent;
  position: relative;
  z-index: 10;
  margin-top: -4%;
}
.marquee-inner {
  display: flex;
  flex-direction: column;
  padding: 4cqw 0;
}
.marquee-band {
  background-repeat: repeat-x;
  background-size: auto 100%;
  background-position: 0 center;
}
.marquee-band-1 {
  height: 14cqw;
  background-image: url('../images/marquee-row-1.png');
  transform: rotate(-4deg) scale(1.15);
}
.marquee-band-2 {
  height: 14cqw;
  background-image: url('../images/marquee-row-2.png');
  transform: rotate(6deg) scale(1.15);
  margin-top: -3cqw;
  position: relative;
  z-index: -1;
}

/* ============ 7. AD STRATEGY (375x865) ============ */
.sec-adstrategy {
  margin-top: -10px;
  background: none;
}

/* Heading area (375x181) */
.adstrategy-heading-area {
  background: #fff;
  border-bottom: 1px solid #111;
}
.adstrategy-heading-area img {
  width: 100%;
}

/* Flow chart area (375x600) */
.adstrategy-flow-area {
  background: url('../images/adstrategy-bg.png') center / cover no-repeat;
  padding: 5% 3%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.flow-header {
  width: 100%;
  margin-bottom: 3%;
}
.flow-columns {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  grid-template-rows: auto auto auto auto;
  width: 100%;
  margin-bottom: 2%;
  align-items: center;
  justify-items: center;
}
.flow-col {
  display: contents;
}
.flow-left .flow-item-img    { grid-column: 1; grid-row: 1; }
.flow-left .flow-starburst-img:first-of-type  { grid-column: 1; grid-row: 2; }
.flow-left .flow-item-small  { grid-column: 1; grid-row: 3; }
.flow-left .flow-starburst-img:last-of-type   { grid-column: 1; grid-row: 4; }
.flow-center .flow-vertical  { grid-column: 2; grid-row: 1 / 3; align-self: center; transform: translateY(15px); }
.flow-center .flow-arrow-right { grid-column: 2; grid-row: 3 / 5; align-self: center; transform: translateY(15px); }
.flow-right .flow-item-img   { grid-column: 3; grid-row: 1; width: 80%; }
.flow-right .flow-starburst-img:first-of-type { grid-column: 3; grid-row: 2; }
.flow-right .flow-starburst-img:last-of-type  { grid-column: 3; grid-row: 4; }
.flow-item-img { width: 70%; }
.flow-starburst-img { width: 100%; }
.flow-item-small { width: 50%; }
.flow-vertical { width: 100%; position: relative; top: 120px; }
.flow-arrow-right { width: 100%; position: relative; top: 15px; }
.flow-spacer { display: none; }

/* Dakara (375x84) */
.adstrategy-dakara img {
  width: 100%;
}

/* ============ 8. MID-CTA (375x572) ============ */
.sec-midcta {
  background: url('../images/midcta-bg.png') top center / 100% 100% no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  padding: 40px 0 20px;
  margin-top: -50px;
}
.midcta-heading {
  width: 100%;
}
.midcta-main {
  position: relative;
  width: 100%;
  margin-top: -10%;
}
.midcta-frame {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -52%);
  width: 95.7%;
  pointer-events: none;
  z-index: 0;
}
.midcta-characters {
  width: 100%;
  position: relative;
  z-index: 10;
}
.midcta-banner-band {
  width: 100%;
  margin-top: -21cqw;
  position: relative;
  z-index: 10;
  height: 15cqw;
  background-image: url('../images/midcta-banner.png');
  background-repeat: repeat-x;
  background-size: auto 100%;
  background-position: 0 center;
  transform: rotate(-4deg) scale(1.15);
  margin-top: -8cqw;
  margin-bottom: 4cqw;
}
.midcta-logo {
  width: 80%;
  margin: 2% auto 4%;
}

/* ============ 10. CASE STUDY (375x732) ============ */
.sec-casestudy {
  position: relative;
  overflow: clip;
  overflow-x: clip;
  overflow-y: visible;
  margin-top: 15px;
}
.casestudy-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.casestudy-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* Marquee inside case study */
.casestudy-marquee {
  width: 100%;
  overflow: visible;
  padding: 4cqw 0;
}
.casestudy-marquee-top {
  margin-top: -3.7%;
  margin-bottom: 2%;
}
.casestudy-marquee-bottom {
  margin-top: -4%;
  margin-bottom: 4%;
}
.casestudy-marquee .marquee-band-2 {
  margin-top: -3cqw;
  position: relative;
  z-index: -1;
}
.casestudy-heading {
  width: 95%;
  margin-bottom: 3%;
}
/* Slider */
.casestudy-slider {
  position: relative;
  width: 100%;
}
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  transition: opacity 0.3s ease;
  opacity: 1;
}
.slider-arrow.hidden {
  opacity: 0;
  pointer-events: none;
}
.slider-arrow img {
  width: 35px;
  height: 39px;
}
.slider-prev {
  left: 4px;
}
.slider-next {
  right: 4px;
}
.casestudy-cards {
  display: flex;
  gap: 3%;
  width: 100%;
  padding: 0 3.2%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 3%;
  scroll-behavior: smooth;
}
.casestudy-cards::-webkit-scrollbar { display: none; }
.casestudy-cards img {
  min-width: 70%;
  scroll-snap-align: center;
  flex-shrink: 0;
}

/* ============ 12. STEPS (375x2071) ============ */
.sec-steps {
  background: #1a1a2e url('../images/steps-bg.png') center top / 100% auto repeat-y;
  padding: 120px 4px 66px;
  margin-top: -120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.steps-heading {
  width: 92%;
  margin-bottom: 24px;
}
.steps-cards {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
}
.steps-cards img {
  width: 96%; /* 361/375 - includes badge & shadow */
}
/* Steps decorative elements */
.steps-deco {
  position: absolute;
  pointer-events: none;
  z-index: 1;
}
.steps-deco-rect94 {
  width: 140px;
  left: -20px;
  top: 11.5%;
}
.steps-deco-group24 {
  width: 120px;
  right: 0;
  top: 27.5%;
}
.steps-deco-group25a {
  width: 130px;
  left: -20px;
  top: 45.5%;
}
.steps-deco-rect93 {
  width: 140px;
  right: -20px;
  top: 59.5%;
}
.steps-deco-group25b {
  width: 130px;
  left: -15px;
  top: 81%;
}

/* ============ 13. COMPANY (375x546) ============ */
.sec-company {
  position: relative;
  overflow: hidden;
}
.company-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3% 3.2% 6%;
  gap: 3%;
}
.company-logo {
  width: 55%;
  border-radius: 50%;
  margin-left: 15px;
}
.company-card {
  width: 105%;
  max-width: none;
  margin-top: -30px;
}

/* ============ 14. FORM (375x801) ============ */
.sec-form {
  background: #fafafa;
  padding: 0 0 8%;
}
.form-header {
  text-align: center;
  padding: 3% 0.5% 0;
}
.form-speech-area {
  width: 99%; /* 371.5/375 */
  margin: 0 auto;
}
.form-bubble {
  width: 100%;
  margin: 0 auto;
  position: relative;
  top: 35px;
  z-index: 20;
}
.form-content {
  padding: 4% 6.4%; /* x=24 → 6.4% */
}
.form-group {
  margin-bottom: 24px;
}
.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.form-label span {
  font-size: clamp(14px, 3.7vw, 28px);
  font-weight: 700;
  color: #111;
}
.form-label .required {
  background: #ff1235;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 2px;
}
.form-input {
  width: 100%;
  height: clamp(52px, 14vw, 82px); /* 68px at 375px */
  border: 1px solid #ececec;
  border-radius: 4px;
  padding: 0 16px;
  font-size: clamp(14px, 3.7vw, 26px);
  font-family: 'Noto Sans JP', sans-serif;
  background: #fff;
  outline: none;
}
.form-input:focus {
  border-color: #4264fc;
}
.form-submit-wrap {
  display: block;
  width: 93.6%; /* 351/375 */
  margin: 24px auto 0;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.form-submit-img {
  width: 100%;
}

/* ============ 15. FOOTER (375x49) ============ */
.sec-footer {
  background: #222;
  padding: 14px 0;
  text-align: center;
}
.sec-footer p {
  color: #fff;
  font-size: 13px;
  margin: 0;
  letter-spacing: 0.5px;
}