:root{--red:#e01828;--blue:#1687ff;--black:#050607;--panel:#101216;--line:#2a2d33;--play-bottom:22px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#050607}
body{margin:0;background:radial-gradient(circle at 50% 20%,#17191e 0,#08090b 36%,#030405 80%);color:#f5f7fa;font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;letter-spacing:.04em}
a{color:inherit;text-decoration:none}
.siteHeader{position:sticky;top:0;z-index:30;height:76px;padding:8px clamp(18px,4vw,64px);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(180deg,rgba(21,23,28,.97),rgba(4,5,7,.94));border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(16px)}
.brand img{width:170px;height:58px;object-fit:contain}
.siteHeader nav{display:flex;gap:clamp(18px,3vw,48px);font:700 12px/1 Arial,sans-serif;letter-spacing:.2em}
.siteHeader nav a{position:relative;padding:26px 0;color:#c7cbd2}
.siteHeader nav a:after{content:"";position:absolute;left:0;bottom:13px;width:0;height:2px;background:linear-gradient(90deg,var(--blue),var(--red));transition:.25s}
.siteHeader nav a:hover{color:white}
.siteHeader nav a:hover:after{width:100%}
.hero{position:relative;overflow:hidden;background:#000}
.hero img{width:100%;display:block;min-height:360px;max-height:calc(100vh - 76px);object-fit:cover;object-position:center}
.heroPlayArea{display:flex;justify-content:center;padding:20px 20px 4px;background:#080808}
.heroPlayButton{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 30px;color:#fff;font-size:14px;font-weight:800;letter-spacing:.03em;text-align:center;background:linear-gradient(105deg,#670710,#df1729 52%,#820812);border:1px solid #ff6674;border-radius:7px;box-shadow:0 6px 20px rgba(215,19,36,.3);transition:transform .2s,filter .2s,box-shadow .2s}
.heroPlayButton:hover{transform:translateY(-2px);filter:brightness(1.13);box-shadow:0 8px 24px rgba(215,19,36,.45)}
.heroPlayButton:focus-visible{outline:3px solid #ffe45c;outline-offset:3px}
.section{width:min(1120px,calc(100% - 40px));margin:auto;padding:110px 0}
.sectionHead p{margin:0 0 7px;color:#8d939e;font:700 11px Arial;letter-spacing:.35em}
.sectionHead h2{margin:0;font-size:clamp(30px,5vw,52px);letter-spacing:.08em}
.sectionHead h2:after{content:"";display:block;width:84px;height:3px;margin-top:20px;background:linear-gradient(90deg,var(--blue),#ddd 50%,var(--red))}
.newsSection{display:grid;grid-template-columns:260px 1fr;gap:70px;align-items:start}
.newsBox{max-height:270px;overflow-y:auto;border-top:1px solid #484c55;border-bottom:1px solid #484c55;scrollbar-color:#8d939e #15171b}
.newsBox article{min-height:54px;display:grid;grid-template-columns:110px 72px 1fr;align-items:center;gap:14px;border-bottom:1px solid #272a30;font-size:14px}
.newsBox article:last-child{border:0}
.newsBox time{color:#8d939e;font:12px Arial}
.newsBox span{text-align:center;padding:5px;border:1px solid #7d828b;color:#dadddf;font:700 9px Arial}
.newsBox p{margin:0}
.about{padding-top:65px}
.aboutPanel{position:relative;overflow:hidden;display:grid;grid-template-columns:1fr 1.2fr;gap:65px;margin-top:52px;padding:70px;background:linear-gradient(135deg,rgba(25,29,36,.96),rgba(7,8,11,.92));border:1px solid #30343d;box-shadow:0 28px 90px rgba(0,0,0,.5)}
.aboutPanel:before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(22,135,255,.08),transparent 42%,rgba(224,24,40,.08));pointer-events:none}
.xMark{align-self:center;text-align:center;font:900 clamp(150px,23vw,270px)/.7 Georgia,serif;color:transparent;-webkit-text-stroke:2px #505763;filter:drop-shadow(-8px 0 20px rgba(22,135,255,.25)) drop-shadow(8px 0 20px rgba(224,24,40,.22))}
.aboutPanel .lead{margin:0 0 30px;font-size:clamp(31px,4vw,52px);font-weight:800;line-height:1.35}
.aboutPanel p:not(.lead){color:#c3c7ce;line-height:2.1}
.rules{background:linear-gradient(180deg,rgba(11,13,16,.5),#0c0e12);border-top:1px solid #20232a}
.rulesInner{width:min(1240px,calc(100% - 40px))}
.rulesIntro{margin:30px 0 60px;color:#aeb3bc}
.ruleGrid{display:grid;gap:38px}
.ruleCard{display:grid;grid-template-columns:minmax(320px,1.2fr) 1fr;min-height:300px;background:#111318;border:1px solid #2a2e36;overflow:hidden;box-shadow:0 18px 50px rgba(0,0,0,.22)}
.ruleCard:nth-child(even) .ruleImage{order:2}
.ruleImage{position:relative;border:0;padding:0;background:#000;cursor:zoom-in;overflow:hidden}
.ruleImage img{width:100%;height:100%;min-height:300px;display:block;object-fit:cover;transition:.45s}
.ruleImage:hover img{transform:scale(1.025);filter:brightness(.72)}
.ruleImage span{position:absolute;inset:50% auto auto 50%;translate:-50% -50%;opacity:0;border:1px solid white;padding:10px 18px;color:white;font:700 10px Arial;letter-spacing:.2em;transition:.3s}
.ruleImage:hover span{opacity:1}
.ruleCopy{align-self:center;padding:45px}
.ruleCopy>p{margin:0 0 12px;color:#aeb3bc;font:700 10px Arial;letter-spacing:.3em}
.ruleCopy h3{margin:0 0 24px;font-size:clamp(24px,3vw,38px)}
.ruleCopy div{color:#bbc0c8;line-height:2}
.ruleCardTextOnly{display:block;min-height:0;background:linear-gradient(135deg,#181a20,#0b0c0f)}
.ruleCardTextOnly .ruleCopy{padding:52px clamp(28px,6vw,76px)}
.otherRuleList{display:grid;gap:18px;margin:0;padding:0;list-style:none;color:#d5d8de;line-height:1.85}
.otherRuleList li{position:relative;padding-left:24px}
.otherRuleList li:before{content:"";position:absolute;left:0;top:.8em;width:8px;height:8px;rotate:45deg;background:linear-gradient(135deg,var(--blue),var(--red));box-shadow:0 0 10px rgba(224,24,40,.35)}
.lightbox{max-width:min(1000px,92vw);padding:0;border:1px solid #555b66;background:#050607;box-shadow:0 20px 100px #000}
.lightbox::backdrop{background:rgba(0,0,0,.88);backdrop-filter:blur(8px)}
.lightbox img{display:block;max-width:90vw;max-height:84vh}
.lightbox button{position:absolute;right:8px;top:8px;width:40px;height:40px;border:1px solid #777;background:rgba(0,0,0,.8);color:white;font-size:24px;cursor:pointer}
.siteFooter{padding:65px 20px 115px;text-align:center;background:linear-gradient(#111318,#020303);border-top:1px solid #262a31;color:#777d87}
.siteFooter img{width:200px;max-height:100px;object-fit:contain;filter:saturate(.8)}
.siteFooter p{font:700 10px Arial;letter-spacing:.4em}
.siteFooter small{font-size:10px}
.playButton{position:fixed;z-index:50;left:50%;bottom:var(--play-bottom);translate:-50% 0;width:min(510px,calc(100% - 28px));min-height:68px;display:grid;grid-template-columns:82px 1fr 46px;align-items:center;padding:8px 14px;background:linear-gradient(105deg,#56050b,#d71324 48%,#760710);border:1px solid #ff6a76;clip-path:polygon(18px 0,calc(100% - 18px) 0,100% 50%,calc(100% - 18px) 100%,18px 100%,0 50%);box-shadow:0 10px 35px #000,0 0 28px rgba(224,24,40,.42);transition:.25s}
.playButton:hover{transform:translateY(-4px);filter:brightness(1.18)}
.playButton small{color:#ffe45c;font:800 9px Arial;letter-spacing:.16em}
.playButton strong{text-align:center;font-size:15px}
.playButton em{justify-self:end;padding:8px 7px;background:#fff;border-radius:50%;color:#d71324;font-size:11px;font-style:normal;font-weight:900}

@media(max-width:760px){.siteHeader{height:62px;padding:6px 14px}
.brand img{width:130px;height:48px}
.siteHeader nav{gap:14px}
.siteHeader nav a{padding:20px 0;font-size:9px}
.hero img{min-height:260px;aspect-ratio:16/9}
.heroPlayArea{padding:14px 14px 2px}
.heroPlayButton{width:min(100%,360px);min-height:44px;padding:10px 18px;font-size:12px}
.section{width:min(100% - 28px,1120px);padding:78px 0}
.newsSection{display:block}
.newsBox{margin-top:42px}
.newsBox article{grid-template-columns:78px 48px 1fr;gap:8px;font-size:12px}
.aboutPanel{display:block;padding:35px 24px}
.xMark{display:none}
.ruleCard,.ruleCard:nth-child(even){display:flex;flex-direction:column}
.ruleCard:nth-child(even) .ruleImage{order:0}
.ruleImage img{min-height:0;aspect-ratio:16/9}
.ruleCopy{padding:28px 24px 34px}
.playButton{grid-template-columns:60px 1fr 40px;min-height:60px}
.playButton strong{font-size:12px}
.playButton small{font-size:7px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
.ruleImage img,.playButton{transition:none}
}