/* ============================================================
   EUREKA5 LP — Stylesheet
   EUREKA5 公式デザインシステム準拠 / サイバーパンク・HUDテーマ
   ============================================================ */

/* ============================================================
   FONTS
   ============================================================ */
@font-face{font-family:"Corporate Logo";src:url("../assets/fonts/Corporate-Logo-Bold-ver3.ttf") format("truetype");font-weight:700;font-display:swap;}
@font-face{font-family:"Corporate Logo";src:url("../assets/fonts/Corporate-Logo-Medium-ver3.ttf") format("truetype");font-weight:500;font-display:swap;}
@font-face{font-family:"Corporate Logo Rounded";src:url("../assets/fonts/Corporate-Logo-Rounded-Bold-ver3.ttf") format("truetype");font-weight:700;font-display:swap;}
@font-face{font-family:"Noto Sans JP";src:url("../assets/fonts/NotoSansJP-Regular.ttf") format("truetype");font-weight:400;font-display:swap;}
@font-face{font-family:"Noto Sans JP";src:url("../assets/fonts/NotoSansJP-Bold.ttf") format("truetype");font-weight:700;font-display:swap;}
@font-face{font-family:"Roboto Flex";src:url("../assets/fonts/Roboto-VariableFont.ttf") format("truetype-variations");font-weight:100 900;font-display:swap;}

/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --mint:#74FFC4; --mint-2:#00FFC2; --mint-3:#26F396;
  --cyan:#19D0FC; --cyan-2:#00C2FF;
  --magenta:#FF009D; --pink:#FF6EFF; --violet:#5A33FF; --purple:#9C00E7;
  --red:#FF1A27; --yellow:#EAFF00; --lime:#A0FA00; --amber:#F6CE69;
  --black:#000; --bg:#08090c; --ink:#101216; --surf:#171a20; --surf-2:#21252d;
  --line:rgba(116,255,196,.55); --line-soft:rgba(116,255,196,.18);
  --white:#fff; --muted:rgba(255,255,255,.62); --muted-2:rgba(255,255,255,.4);

  --f-disp:"Corporate Logo","Noto Sans JP",system-ui,sans-serif;
  --f-round:"Corporate Logo Rounded","Noto Sans JP",system-ui,sans-serif;
  --f-jp:"Noto Sans JP","Hiragino Sans",system-ui,sans-serif;
  --f-mono:"Roboto Flex","SF Mono",ui-monospace,Menlo,monospace;

  --glow-mint:0 0 12px rgba(116,255,196,.65),0 0 32px rgba(116,255,196,.35);
  --glow-mag:0 0 12px rgba(255,0,157,.7),0 0 30px rgba(255,0,157,.4);
  --glow-cyan:0 0 12px rgba(25,208,252,.6),0 0 28px rgba(25,208,252,.35);
  --maxw:1120px;
}

/* ============================================================
   RESET
   ============================================================ */
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  background:var(--bg); color:var(--white);
  font-family:var(--f-jp); line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
::selection{background:var(--mint);color:#062018;}

/* page-wide cyber grid + vignette */
body::before{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    linear-gradient(rgba(116,255,196,.035) 1px,transparent 1px) 0 0/100% 46px,
    linear-gradient(90deg,rgba(116,255,196,.035) 1px,transparent 1px) 0 0/46px 100%;
  mask-image:radial-gradient(120% 90% at 50% 0%,#000 40%,transparent 100%);
}
body::after{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(120% 80% at 50% -10%,transparent 60%,rgba(0,0,0,.55) 100%);
}

/* ============================================================
   SHARED UTILITIES
   ============================================================ */
.wrap{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px;}
section{position:relative;z-index:1;}

/* notched HUD frame */
.hud{position:relative;--n:16px;
  clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));
}
.hud::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;pointer-events:none;z-index:4;}
.hud .cn{position:absolute;width:13px;height:13px;background:var(--mint);z-index:5;opacity:.9;}
.hud .cn.tl{top:0;left:0;clip-path:polygon(0 0,100% 0,0 100%);}
.hud .cn.br{bottom:0;right:0;clip-path:polygon(100% 0,100% 100%,0 100%);}

.mono{font-family:var(--f-mono);font-feature-settings:"tnum";letter-spacing:.04em;}
.glow-m{color:var(--mint);text-shadow:var(--glow-mint);}

/* section eyebrow + title */
.sec-head{margin-bottom:42px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-disp);font-weight:700;font-size:13px;letter-spacing:.32em;
  color:var(--mint);text-transform:uppercase;text-shadow:0 0 10px rgba(116,255,196,.5);
}
.eyebrow .dot{width:9px;height:9px;background:var(--mint);box-shadow:var(--glow-mint);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);}
.eyebrow .ln{width:46px;height:1px;background:linear-gradient(90deg,var(--mint),transparent);}
.sec-title{
  font-family:var(--f-disp);font-weight:700;color:var(--white);
  font-size:clamp(28px,5.2vw,46px);line-height:1.18;margin-top:16px;letter-spacing:.01em;
}
.sec-title b{color:var(--mint);text-shadow:0 0 18px rgba(116,255,196,.35);}
.sec-sub{margin-top:18px;color:var(--muted);font-size:clamp(15px,1.7vw,17px);max-width:60ch;line-height:1.95;}

/* dot run ornament */
.dotrun{display:flex;gap:4px;align-items:center;}
.dotrun i{display:block;width:3px;height:8px;background:var(--mint);opacity:.5;}

/* ============================================================
   STORE BUTTONS
   ============================================================ */
.stores{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
/* 公式ストアバッジ（App Store / Google Play）。規約に従い形状・配色は無加工、角丸クリップもしない */
.store-badge{display:inline-block;line-height:0;
  transition:transform .12s ease,filter .2s ease;}
.store-badge img{display:block;height:56px;width:auto;}
.store-badge:hover{transform:translateY(-3px);
  filter:drop-shadow(0 6px 16px rgba(0,0,0,.5)) drop-shadow(0 0 14px rgba(116,255,196,.6));}
.store-badge:active{transform:translateY(0) scale(.985);}

/* ============================================================
   TOP NAV (slim, appears on scroll)
   ============================================================ */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 22px;
  background:rgba(8,9,12,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transform:translateY(-110%);transition:transform .35s cubic-bezier(.2,.7,.3,1);
}
.topbar.show{transform:translateY(0);}
.topbar .brand{display:flex;align-items:center;}
/* 公式ロゴをミントで着色（白透過PNGをmaskで色付け） */
.topbar .brand-logo{display:block;height:26px;aspect-ratio:7308/1966;
  background:var(--mint);
  -webkit-mask:url("../assets/images/eureka_logo.png") no-repeat left center/contain;
          mask:url("../assets/images/eureka_logo.png") no-repeat left center/contain;
  filter:drop-shadow(0 0 8px rgba(116,255,196,.5));}
.nav-cta{
  font-family:var(--f-disp);font-weight:700;font-size:13px;letter-spacing:.04em;
  color:#062018;background:var(--mint);padding:9px 18px;
  --n:8px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));
  box-shadow:0 0 14px rgba(116,255,196,.55);transition:box-shadow .2s,transform .12s;
}
.nav-cta:hover{box-shadow:0 0 24px rgba(116,255,196,.9);transform:translateY(-1px);}
.topbar-right{display:flex;align-items:center;gap:12px;}

/* ===== 言語切り替え（JA / EN） ===== */
.lang-switch{display:inline-flex;align-items:center;gap:2px;padding:3px;
  background:rgba(8,9,12,.7);border:1px solid var(--line-soft);
  --n:7px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.lang-switch .lang-btn{font-family:var(--f-mono);font-size:11px;font-weight:700;letter-spacing:.08em;
  color:var(--muted);background:transparent;border:0;cursor:pointer;padding:5px 9px;line-height:1;
  transition:color .15s,background .15s,box-shadow .15s;}
.lang-switch .lang-btn:hover{color:var(--white);}
.lang-switch .lang-btn.active{color:#062018;background:var(--mint);box-shadow:0 0 10px rgba(116,255,196,.55);}
/* 常時表示のフローティング版（スクロールヘッダー出現時は隠す） */
.lang-float{position:fixed;top:12px;right:14px;z-index:70;backdrop-filter:blur(8px);
  transition:opacity .3s ease,transform .3s ease;}
.lang-float.hide{opacity:0;transform:translateY(-14px);pointer-events:none;}
@media (max-width:560px){
  .lang-float{top:10px;right:10px;}
}

/* ============================================================
   1. HERO
   ============================================================ */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding:96px 0 80px;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:50% 32%;}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(8,9,12,.55) 0%,rgba(8,9,12,.25) 30%,rgba(8,9,12,.7) 72%,var(--bg) 100%),
    radial-gradient(80% 60% at 50% 40%,transparent 40%,rgba(8,9,12,.6) 100%);
}
/* animated scanline sweep over hero */
.hero-bg .scan{position:absolute;inset:0;mix-blend-mode:screen;opacity:.35;
  background:repeating-linear-gradient(180deg,transparent 0 3px,rgba(116,255,196,.05) 3px 4px);
  animation:scanmove 9s linear infinite;}
@keyframes scanmove{to{background-position:0 60px;}}

.hero-inner{position:relative;z-index:3;max-width:760px;}

/* award badge */
.badge{
  display:inline-flex;align-items:center;gap:12px;
  padding:9px 18px 9px 12px;margin-bottom:30px;
  background:linear-gradient(90deg,rgba(234,255,0,.14),rgba(234,255,0,.03));
  --n:9px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));
  position:relative;animation:badgepulse 3.2s ease-in-out infinite;
}
.badge::before{content:"";position:absolute;inset:0;border:1px solid rgba(234,255,0,.6);clip-path:inherit;}
@keyframes badgepulse{0%,100%{box-shadow:0 0 0 rgba(234,255,0,0);}50%{box-shadow:0 0 22px rgba(234,255,0,.35);}}
.badge .trophy{width:22px;height:22px;color:var(--yellow);flex:0 0 auto;filter:drop-shadow(0 0 6px rgba(234,255,0,.6));}
.badge .b-txt{display:flex;flex-direction:column;line-height:1.25;}
.badge .b-txt small{font-family:var(--f-mono);font-size:9.5px;letter-spacing:.2em;color:rgba(234,255,0,.85);text-transform:uppercase;}
.badge .b-txt b{font-family:var(--f-disp);font-weight:700;font-size:14px;color:#fffce0;letter-spacing:.01em;}
/* レスポンシブ改行: PCでは無効、SP(≤560px)でのみ改行（バッジ見出し・Heroコピー等で使用） */
.br-sp{display:none;}

/* logo */
.hero-logo{margin:0 0 8px;}
.hero-logo .jp{font-family:var(--f-mono);font-weight:600;font-size:clamp(13px,2vw,16px);
  letter-spacing:.55em;color:var(--mint);text-shadow:var(--glow-mint);margin-left:6px;}
/* ---- 公式ロゴ（白透過PNGをミントで着色）+ サイバーグリッチ ---- */
.hero-logo .logo{
  position:relative;display:block;margin-top:10px;isolation:isolate;
  width:min(640px,94%);aspect-ratio:7308/1966;
}
.hero-logo .logo .ly{
  position:absolute;inset:0;
  -webkit-mask:url("../assets/images/eureka_logo.png") no-repeat center/contain;
          mask:url("../assets/images/eureka_logo.png") no-repeat center/contain;
}
/* 1) ベース: 常時表示のミントロゴ + 発光パルス（=現状の点滅を踏襲） */
.hero-logo .logo .base{background:var(--mint);
  filter:drop-shadow(0 0 16px rgba(116,255,196,.55)) drop-shadow(0 0 52px rgba(116,255,196,.3));
  animation:logoPulse 3.2s ease-in-out infinite;}
/* 2) RGB分離 + 左右にノイズが走るグリッチ（シアン/マゼンタ） */
.hero-logo .logo .cy{background:var(--cyan);mix-blend-mode:screen;opacity:0;
  animation:logoCy 3.6s steps(1,end) infinite;}
.hero-logo .logo .rd{background:var(--magenta);mix-blend-mode:screen;opacity:0;
  animation:logoRd 3.6s steps(1,end) infinite;}
/* 3) 走査スリット（横帯がチラッと走る白ノイズ） */
.hero-logo .logo .sc{background:var(--white);mix-blend-mode:screen;opacity:0;
  animation:logoScan 3.6s steps(1,end) infinite;}

@keyframes logoPulse{
  0%,100%{filter:drop-shadow(0 0 14px rgba(116,255,196,.5)) drop-shadow(0 0 46px rgba(116,255,196,.25));}
  50%{filter:drop-shadow(0 0 22px rgba(116,255,196,.8)) drop-shadow(0 0 72px rgba(116,255,196,.45));}
}
/* シアン: 2回のバーストで横スライスが左右にズレる */
@keyframes logoCy{
  0%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  6%{opacity:.7;clip-path:inset(10% 0 70% 0);transform:translateX(11px);}
  8%{opacity:.55;clip-path:inset(48% 0 32% 0);transform:translateX(-15px);}
  10%{opacity:.65;clip-path:inset(28% 0 52% 0);transform:translateX(7px);}
  12%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  60%{opacity:.65;clip-path:inset(68% 0 14% 0);transform:translateX(-13px);}
  62%{opacity:.5;clip-path:inset(18% 0 66% 0);transform:translateX(15px);}
  64%{opacity:.65;clip-path:inset(44% 0 40% 0);transform:translateX(-8px);}
  66%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  100%{opacity:0;}
}
/* マゼンタ: シアンと逆方向にズレてRGB分離を強調 */
@keyframes logoRd{
  0%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  6%{opacity:.7;clip-path:inset(10% 0 70% 0);transform:translateX(-11px);}
  8%{opacity:.55;clip-path:inset(48% 0 32% 0);transform:translateX(15px);}
  10%{opacity:.65;clip-path:inset(28% 0 52% 0);transform:translateX(-7px);}
  12%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  60%{opacity:.65;clip-path:inset(68% 0 14% 0);transform:translateX(13px);}
  62%{opacity:.5;clip-path:inset(18% 0 66% 0);transform:translateX(-15px);}
  64%{opacity:.65;clip-path:inset(44% 0 40% 0);transform:translateX(8px);}
  66%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  100%{opacity:0;}
}
/* 白い横スリットが一瞬走る */
@keyframes logoScan{
  0%,5%{opacity:0;clip-path:inset(0 0 100% 0);}
  7%{opacity:.5;clip-path:inset(20% 0 74% 0);}
  9%{opacity:.35;clip-path:inset(60% 0 34% 0);}
  11%{opacity:0;clip-path:inset(0 0 100% 0);}
  61%{opacity:.45;clip-path:inset(36% 0 58% 0);}
  63%{opacity:.3;clip-path:inset(76% 0 18% 0);}
  65%,100%{opacity:0;clip-path:inset(0 0 100% 0);}
}

.hero-copy{font-family:var(--f-disp);font-weight:700;
  font-size:clamp(22px,3.6vw,34px);line-height:1.42;margin:22px 0 14px;letter-spacing:.01em;
  text-shadow:0 2px 16px rgba(0,0,0,.6);}
.hero-copy .hl{color:var(--mint);text-shadow:var(--glow-mint);}
.hero-copy .hl-m{color:var(--pink);text-shadow:var(--glow-mag);}
.hero-sub{font-size:clamp(14px,1.8vw,17px);color:rgba(255,255,255,.82);max-width:54ch;
  line-height:1.9;margin-bottom:34px;text-shadow:0 1px 10px rgba(0,0,0,.7);}
.hero .stores{margin-bottom:26px;}
.hero-note{display:flex;align-items:center;gap:10px;font-family:var(--f-mono);
  font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;}
.hero-note .dotrun i{height:6px;}

/* ---- ランダム表示アバター（右側） + RGBグリッチ ---- */
.hero-avatar{position:absolute;z-index:2;right:clamp(8px,4vw,64px);bottom:0;
  height:min(86%,720px);pointer-events:none;
  filter:drop-shadow(0 18px 40px rgba(0,0,0,.55));
  animation:floatY 5s ease-in-out infinite;}
.hero-avatar::after{content:"";position:absolute;left:50%;bottom:6%;transform:translateX(-50%);
  width:78%;aspect-ratio:1/.3;border-radius:50%;z-index:-1;
  background:radial-gradient(60% 60% at 50% 50%,rgba(116,255,196,.35),transparent 70%);
  filter:blur(6px);}
.hero-avatar .av{height:100%;width:auto;}
/* 本体: 読み込み後フェードイン */
.hero-avatar .av.base{position:relative;display:block;opacity:0;transition:opacity .6s ease;}
.hero-avatar.is-ready .av.base{opacity:1;}
/* ゴースト2枚: 本体に重ねてシアン/マゼンタに着色、バースト時のみ横スライスしてズレる */
.hero-avatar .av.g1,.hero-avatar .av.g2{position:absolute;top:0;left:0;
  width:100%;height:100%;object-fit:contain;object-position:bottom;
  mix-blend-mode:screen;opacity:0;}
.hero-avatar .av.g1{filter:sepia(1) hue-rotate(120deg) saturate(4) brightness(1.1);
  animation:avGlitchA 2.8s steps(1,end) infinite;}
.hero-avatar .av.g2{filter:sepia(1) hue-rotate(300deg) saturate(5) brightness(1.1);
  animation:avGlitchB 2.8s steps(1,end) infinite;}
@keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-12px);}}
/* シアンゴースト: 2回のバーストで右方向中心にスライス */
@keyframes avGlitchA{
  0%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  3%{opacity:.55;clip-path:inset(14% 0 72% 0);transform:translateX(11px);}
  5%{opacity:.4;clip-path:inset(52% 0 30% 0);transform:translateX(-13px);}
  7%{opacity:.5;clip-path:inset(33% 0 50% 0);transform:translateX(7px);}
  9%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  58%{opacity:.5;clip-path:inset(66% 0 16% 0);transform:translateX(-11px);}
  60%{opacity:.4;clip-path:inset(22% 0 60% 0);transform:translateX(13px);}
  62%{opacity:.5;clip-path:inset(44% 0 40% 0);transform:translateX(-7px);}
  64%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  100%{opacity:0;}
}
/* マゼンタゴースト: 逆方向にズレてRGB分離を強調 */
@keyframes avGlitchB{
  0%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  3%{opacity:.55;clip-path:inset(14% 0 72% 0);transform:translateX(-11px);}
  5%{opacity:.4;clip-path:inset(52% 0 30% 0);transform:translateX(13px);}
  7%{opacity:.5;clip-path:inset(33% 0 50% 0);transform:translateX(-7px);}
  9%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  58%{opacity:.5;clip-path:inset(66% 0 16% 0);transform:translateX(11px);}
  60%{opacity:.4;clip-path:inset(22% 0 60% 0);transform:translateX(-13px);}
  62%{opacity:.5;clip-path:inset(44% 0 40% 0);transform:translateX(7px);}
  64%{opacity:0;clip-path:inset(0 0 0 0);transform:translateX(0);}
  100%{opacity:0;}
}

/* scroll hint */
.scrollhint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--mint);
  font-family:var(--f-mono);font-size:9px;letter-spacing:.3em;opacity:.8;}
.scrollhint .bar{width:1px;height:40px;background:linear-gradient(var(--mint),transparent);
  animation:scrolldrop 1.8s ease-in-out infinite;transform-origin:top;}
@keyframes scrolldrop{0%,100%{transform:scaleY(.3);opacity:.4;}50%{transform:scaleY(1);opacity:1;}}

/* ============================================================
   2. INTRODUCTION
   ============================================================ */
.intro{padding:96px 0 84px;background:linear-gradient(180deg,var(--bg),#0b0d11 60%,var(--bg));}
.intro .catch{
  font-family:var(--f-disp);font-weight:700;text-align:center;
  font-size:clamp(24px,4.6vw,42px);line-height:1.4;letter-spacing:.01em;margin-bottom:30px;
}
.intro .catch b{color:var(--mint);text-shadow:0 0 20px rgba(116,255,196,.4);}
.intro .lead{max-width:740px;margin:0 auto 56px;text-align:center;
  color:var(--muted);font-size:clamp(15px,1.8vw,17px);line-height:2.1;}
.intro .lead .em{color:#fff;font-weight:700;}

/* video placeholder */
.video-frame{position:relative;max-width:920px;margin:0 auto;padding:14px;background:linear-gradient(180deg,#12151b,#0a0b0f);}
/* 縦型動画を含むフレームはスマホ実機サイズ感に絞る */
.video-frame:has(.video.portrait){max-width:min(420px,86vw);}
.video-frame .toplbl{display:flex;justify-content:space-between;align-items:center;
  padding:2px 8px 12px;font-family:var(--f-mono);font-size:10px;letter-spacing:.22em;
  color:var(--mint);text-transform:uppercase;}
.video{position:relative;aspect-ratio:16/9;background:#05060a;overflow:hidden;cursor:pointer;
  --n:14px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.video.portrait{aspect-ratio:9/16;}
.video::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;z-index:3;pointer-events:none;}
.video img,.video .vid{width:100%;height:100%;object-fit:cover;display:block;}
.video .vid{background:#05060a;}
.video img{opacity:.5;transition:opacity .3s,transform .5s;}
/* 再生前はポスターを暗めに、ホバーで少し明るく */
.video:not(.is-playing) .vid{filter:brightness(.55);transition:filter .3s;}
.video:not(.is-playing):hover .vid{filter:brightness(.72);}
.video::after{content:"";position:absolute;inset:0;z-index:1;
  background:repeating-linear-gradient(180deg,transparent 0 4px,rgba(0,0,0,.18) 4px 5px);pointer-events:none;}
.video .center{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;text-align:center;}
.video .play{width:78px;height:78px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(116,255,196,.12);border:2px solid var(--mint);box-shadow:var(--glow-mint);
  transition:transform .2s,box-shadow .2s;}
.video .play svg{width:30px;height:30px;margin-left:5px;color:var(--mint);}
.video .vlabel{font-family:var(--f-disp);font-weight:700;font-size:15px;letter-spacing:.18em;
  color:var(--white);text-transform:uppercase;}
.video .vlabel small{display:block;font-family:var(--f-mono);font-size:10px;letter-spacing:.2em;color:var(--muted);margin-top:6px;text-transform:none;}
.video:hover img{opacity:.7;transform:scale(1.04);}
.video:not(.is-playing):hover .play{transform:scale(1.1);box-shadow:0 0 26px rgba(116,255,196,.9);}
.video .corner{position:absolute;width:18px;height:18px;border:1.5px solid var(--mint);z-index:4;opacity:.8;}
.video .corner.a{top:10px;left:10px;border-right:0;border-bottom:0;}
.video .corner.b{top:10px;right:10px;border-left:0;border-bottom:0;}
.video .corner.c{bottom:10px;left:10px;border-right:0;border-top:0;}
.video .corner.d{bottom:10px;right:10px;border-left:0;border-top:0;}
/* 再生中はオーバーレイ（プレイボタン・走査線・隅罫）を隠してネイティブ操作を優先 */
.video.is-playing{cursor:default;}
.video.is-playing .center,.video.is-playing::after,.video.is-playing .corner{display:none;}

/* ============================================================
   3. FEATURES
   ============================================================ */
.features{padding:96px 0 70px;}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:84px;}
.feat:last-child{margin-bottom:0;}
.feat.rev .feat-media{order:2;}
.feat-media{position:relative;}
.feat-art{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0c0e13;
  --n:18px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.feat-art::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;z-index:5;pointer-events:none;}
.feat-art img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.feat-art:hover img{transform:scale(1.05);}
.feat-art .ovl{position:absolute;inset:0;z-index:2;background:linear-gradient(180deg,transparent 40%,rgba(8,9,12,.55));}
.feat-art .scanl{position:absolute;inset:0;z-index:3;pointer-events:none;
  background:repeating-linear-gradient(180deg,transparent 0 5px,rgba(0,0,0,.14) 5px 6px);}
.feat-art .tag{position:absolute;top:14px;left:14px;z-index:4;font-family:var(--f-mono);
  font-size:10px;letter-spacing:.2em;color:var(--mint);background:rgba(8,9,12,.7);
  padding:5px 10px;border:1px solid var(--line);text-transform:uppercase;}
.feat-art .cn{position:absolute;width:14px;height:14px;background:var(--mint);z-index:6;}
.feat-art .cn.tl{top:0;left:0;clip-path:polygon(0 0,100% 0,0 100%);}
.feat-art .cn.br{bottom:0;right:0;clip-path:polygon(100% 0,100% 100%,0 100%);}

.feat-num{font-family:var(--f-mono);font-weight:700;font-size:14px;letter-spacing:.2em;color:var(--mint);
  display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.feat-num .l{width:40px;height:1px;background:var(--mint);}
.feat h3{font-family:var(--f-disp);font-weight:700;font-size:clamp(24px,3.2vw,32px);
  line-height:1.3;margin-bottom:18px;}
.feat h3 b{color:var(--mint);}
.feat p{color:var(--muted);font-size:16px;line-height:2;}

/* item chips for system 2 */
.itemchips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;
  font-family:var(--f-disp);font-weight:700;font-size:13px;
  background:var(--surf);border:1px solid var(--line-soft);
  --n:7px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.chip svg{width:16px;height:16px;}
.chip.c1{color:var(--mint-3);} .chip.c1 svg{color:var(--mint-3);}
.chip.c2{color:var(--cyan);} .chip.c2 svg{color:var(--cyan);}
.chip.c3{color:var(--magenta);} .chip.c3 svg{color:var(--magenta);}

/* the avatar feature media: chibi on platform */
.avatar-media{position:relative;aspect-ratio:4/3;overflow:hidden;
  background:radial-gradient(120% 90% at 50% 20%,#1a2230,#0a0c10 70%);
  --n:18px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.avatar-media::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;z-index:5;pointer-events:none;}
.avatar-media .grid{position:absolute;inset:0;z-index:1;opacity:.5;
  background:linear-gradient(rgba(116,255,196,.07) 1px,transparent 1px) 0 0/100% 30px,
            linear-gradient(90deg,rgba(116,255,196,.07) 1px,transparent 1px) 0 0/30px 100%;
  mask-image:radial-gradient(70% 60% at 50% 60%,#000,transparent);}
.avatar-media .chibi{position:absolute;left:50%;bottom:6%;transform:translateX(-50%);z-index:3;
  height:84%;width:auto;filter:drop-shadow(0 12px 30px rgba(0,0,0,.6));animation:float 4s ease-in-out infinite;}
@keyframes float{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,-10px);}}
.avatar-media .ring{position:absolute;left:50%;bottom:4%;transform:translateX(-50%);z-index:2;
  width:60%;aspect-ratio:1/.34;border:2px solid var(--mint);border-radius:50%;
  box-shadow:var(--glow-mint),inset 0 0 20px rgba(116,255,196,.3);opacity:.85;}
.avatar-media .coin{position:absolute;top:16px;right:16px;z-index:4;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-mono);font-weight:700;font-size:14px;color:var(--yellow);
  background:rgba(8,9,12,.7);padding:6px 12px;border:1px solid rgba(234,255,0,.5);}
.avatar-media .coin .c{width:16px;height:16px;border-radius:50%;background:var(--yellow);
  color:#1a1a00;font-size:10px;display:flex;align-items:center;justify-content:center;font-weight:700;}

/* ============================================================
   4. GAME MODES
   ============================================================ */
.modes{padding:90px 0;background:linear-gradient(180deg,var(--bg),#0b0d11 50%,var(--bg));}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.mode-card{position:relative;padding:34px 30px 32px;overflow:hidden;
  background:linear-gradient(180deg,var(--surf),#0c0e12);min-height:280px;
  display:flex;flex-direction:column;
  --n:18px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));
  transition:transform .2s ease;}
.mode-card::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;z-index:4;pointer-events:none;transition:border-color .2s,box-shadow .2s;}
.mode-card:hover{transform:translateY(-4px);}
.mode-card:hover::before{border-color:var(--mint);box-shadow:inset 0 0 30px rgba(116,255,196,.12);}
.mode-card .cn{position:absolute;width:14px;height:14px;z-index:5;}
.mode-card .cn.tl{top:0;left:0;background:var(--mint);clip-path:polygon(0 0,100% 0,0 100%);}
.mode-card .cn.br{bottom:0;right:0;background:var(--mint);clip-path:polygon(100% 0,100% 100%,0 100%);}
.mode-card .glowbg{position:absolute;z-index:0;width:200px;height:200px;border-radius:50%;
  filter:blur(60px);opacity:.4;top:-40px;right:-40px;}
.mode-card.rank .glowbg{background:var(--magenta);}
.mode-card.train .glowbg{background:var(--cyan);}
.mode-top{display:flex;align-items:center;justify-content:space-between;position:relative;z-index:2;margin-bottom:auto;}
.mode-badge{font-family:var(--f-mono);font-size:10px;letter-spacing:.22em;text-transform:uppercase;
  padding:5px 11px;border:1px solid currentColor;}
.mode-card.rank .mode-badge{color:var(--magenta);}
.mode-card.train .mode-badge{color:var(--cyan);}
.mode-ico{width:46px;height:46px;}
.mode-card.rank .mode-ico{color:var(--magenta);filter:drop-shadow(0 0 8px rgba(255,0,157,.6));}
.mode-card.train .mode-ico{color:var(--cyan);filter:drop-shadow(0 0 8px rgba(25,208,252,.6));}
.mode-body{position:relative;z-index:2;margin-top:32px;}
.mode-body .en{font-family:var(--f-mono);font-size:11px;letter-spacing:.24em;color:var(--muted);text-transform:uppercase;margin-bottom:6px;}
.mode-body h3{font-family:var(--f-disp);font-weight:700;font-size:26px;margin-bottom:14px;}
.mode-card.rank h3{color:var(--pink);}
.mode-card.train h3{color:var(--cyan);}
.mode-body p{color:var(--muted);font-size:15px;line-height:1.95;}

/* ============================================================
   5. MID CTA
   ============================================================ */
.midcta{position:relative;padding:108px 0;text-align:center;overflow:hidden;}
.midcta .glowband{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 70% at 25% 50%,rgba(255,0,157,.22),transparent 60%),
    radial-gradient(60% 70% at 78% 45%,rgba(116,255,196,.22),transparent 60%);}
.midcta .midgrid{position:absolute;inset:0;z-index:0;opacity:.6;
  background:linear-gradient(90deg,rgba(116,255,196,.06) 1px,transparent 1px) 0 0/54px 100%;
  mask-image:radial-gradient(80% 100% at 50% 50%,#000,transparent);}
.midcta .inner{position:relative;z-index:2;}
.midcta h2{font-family:var(--f-disp);font-weight:700;line-height:1.32;
  font-size:clamp(28px,5.4vw,52px);letter-spacing:.01em;margin-bottom:18px;
  text-shadow:0 0 30px rgba(0,0,0,.6);}
.midcta h2 b{color:var(--mint);text-shadow:var(--glow-mint);}
.midcta .sub{color:rgba(255,255,255,.78);font-size:clamp(14px,1.8vw,17px);
  font-family:var(--f-mono);letter-spacing:.06em;margin-bottom:40px;}
.midcta .stores{justify-content:center;}

/* ============================================================
   NEWS
   ============================================================ */
.news{padding:90px 0;background:linear-gradient(180deg,var(--bg),#0b0d11 50%,var(--bg));}
.news-card{position:relative;max-width:900px;margin:0 auto;padding:30px;
  background:linear-gradient(180deg,var(--surf),#0c0e12);
  --n:18px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.news-card::before{content:"";position:absolute;inset:0;border:1px solid var(--line);clip-path:inherit;z-index:4;pointer-events:none;}
.news-card .cn{position:absolute;width:14px;height:14px;background:var(--mint);z-index:5;}
.news-card .cn.tl{top:0;left:0;clip-path:polygon(0 0,100% 0,0 100%);}
.news-card .cn.br{bottom:0;right:0;clip-path:polygon(100% 0,100% 100%,0 100%);}
.news-imgs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:26px;}
.news-img{position:relative;display:block;overflow:hidden;aspect-ratio:300/169;background:#05060a;
  --n:10px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.news-img::before{content:"";position:absolute;inset:0;border:1px solid var(--line-soft);clip-path:inherit;z-index:2;pointer-events:none;transition:border-color .2s;}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-img:hover img{transform:scale(1.05);}
.news-img:hover::before{border-color:var(--mint);}
.news-date{font-size:12px;letter-spacing:.1em;color:var(--mint);margin-bottom:12px;}
.news-title{font-family:var(--f-disp);font-weight:700;font-size:clamp(18px,2.4vw,24px);line-height:1.45;margin-bottom:16px;}
.news-title b{color:var(--mint);text-shadow:0 0 14px rgba(116,255,196,.35);}
.news-text{color:var(--muted);font-size:15px;line-height:2;margin-bottom:22px;}
.news-meta{display:flex;flex-wrap:wrap;gap:14px 30px;font-size:14px;}
.news-meta > div{display:flex;align-items:center;gap:12px;}
.news-meta dt{font-family:var(--f-mono);font-size:10px;letter-spacing:.14em;color:var(--mint);
  border:1px solid var(--line-soft);padding:4px 9px;text-transform:uppercase;flex:0 0 auto;}
.news-meta dd{color:#e8eef0;}
.news-link{color:var(--mint);border-bottom:1px solid rgba(116,255,196,.4);transition:text-shadow .2s,border-color .2s;}
.news-link:hover{text-shadow:var(--glow-mint);border-color:var(--mint);}
@media (max-width:560px){
  .news-imgs{grid-template-columns:1fr;}
  .news-card{padding:22px;}
}

/* ============================================================
   6. PRODUCT SPEC
   ============================================================ */
.spec{padding:90px 0;}
.spec-box{max-width:780px;margin:0 auto;position:relative;padding:8px;background:linear-gradient(180deg,#12151b,#0a0b0f);}
.spec-inner{position:relative;
  --n:14px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));
  border:1px solid var(--line-soft);}
.spec-row{display:grid;grid-template-columns:200px 1fr;gap:0;
  border-bottom:1px solid rgba(116,255,196,.12);}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{padding:20px 24px;font-family:var(--f-disp);font-weight:700;font-size:15px;
  letter-spacing:.04em;color:var(--mint);background:rgba(116,255,196,.04);
  display:flex;align-items:center;gap:10px;}
.spec-row dt::before{content:"";width:6px;height:6px;background:var(--mint);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);box-shadow:0 0 8px rgba(116,255,196,.7);}
.spec-row dd{padding:20px 24px;font-size:16px;color:#e8eef0;display:flex;align-items:center;}
.spec-row dd .big{font-family:var(--f-disp);font-weight:700;font-size:19px;color:#fff;}
.spec-row dd .free{color:var(--mint);font-weight:700;}

/* ============================================================
   7. FOOTER
   ============================================================ */
.footer{position:relative;padding:90px 0 40px;background:#050609;border-top:1px solid var(--line-soft);overflow:hidden;}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--mint),transparent);box-shadow:0 0 12px var(--mint);}
.foot-cta{text-align:center;margin-bottom:64px;}
.foot-cta .fl{font-family:var(--f-disp);font-weight:700;font-size:clamp(22px,3.4vw,32px);margin-bottom:8px;}
.foot-cta .fl b{color:var(--mint);text-shadow:var(--glow-mint);}
.foot-cta .fs{font-family:var(--f-mono);font-size:12px;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;margin-bottom:30px;}
.foot-cta .stores{justify-content:center;}

.foot-mid{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px;
  padding:34px 0;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);}
.foot-brand{display:inline-block;}
/* 公式ロゴをミントで着色（ヘッダーと同じ mask 方式） */
.foot-brand .foot-logo{display:block;height:30px;aspect-ratio:7308/1966;background:var(--mint);
  -webkit-mask:url("../assets/images/eureka_logo.png") no-repeat left center/contain;
          mask:url("../assets/images/eureka_logo.png") no-repeat left center/contain;
  filter:drop-shadow(0 0 10px rgba(116,255,196,.5));}
.foot-brand small{display:block;font-family:var(--f-mono);font-size:10px;letter-spacing:.3em;color:var(--muted);margin-top:10px;text-shadow:none;}
.socials{display:flex;gap:14px;}
.soc{width:46px;height:46px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-soft);color:var(--muted);transition:all .2s;
  --n:9px;clip-path:polygon(var(--n) 0,100% 0,100% calc(100% - var(--n)),calc(100% - var(--n)) 100%,0 100%,0 var(--n));}
.soc svg{width:20px;height:20px;}
.soc:hover{color:var(--mint);border-color:var(--mint);box-shadow:0 0 16px rgba(116,255,196,.4);transform:translateY(-2px);}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding-top:26px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;color:var(--muted-2);}
.foot-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.foot-bottom .links a{transition:color .2s;}
.foot-bottom .links a:hover{color:var(--mint);}

/* ============================================================
   REVEAL ANIM (fail-safe: visible by default; JS hides below-fold
   elements then transitions them in on scroll)
   ============================================================ */
.rv{transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1);}
.rv.hidden{opacity:0;transform:translateY(26px);}
@media (prefers-reduced-motion:reduce){
  .rv.hidden{opacity:1;transform:none;}
  *{animation:none!important;}
  html{scroll-behavior:auto;}
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:860px){
  .feat{grid-template-columns:1fr;gap:30px;}
  .feat.rev .feat-media{order:0;}
  .mode-grid{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:130px 1fr;}
  /* SP: アバターは右下に小さく・テキストの背面に薄く配置 */
  .hero-avatar{right:-6%;bottom:0;height:min(46%,360px);opacity:.5;}
  .hero-avatar::after{display:none;}
}
@media (max-width:560px){
  .wrap{padding:0 18px;}
  .hero{padding:84px 0 64px;}
  .br-sp{display:inline;}
  .store-badge img{height:52px;}
  .spec-row{grid-template-columns:1fr;}
  .spec-row dt{border-bottom:1px solid rgba(116,255,196,.1);}
  .foot-mid{flex-direction:column;align-items:flex-start;}
  .scrollhint{display:none;}
  .hero-avatar{right:-12%;height:min(40%,300px);opacity:.42;}
}