/* 黑狗兄娛樂城 o9play.tw — 深紫霓虹街機風 */
:root{
  --bg:#120d1d; --bg2:#1a1329; --card:#221a38; --card2:#2a2045;
  --ink:#f3eeff; --mut:#b5aacf; --bord:#372a5a;
  --acc:#c9a7ff; --acc2:#9d7bff; --line:#06c755; --line2:#04a647;
  --gold:#ffd166; --pink:#ff5da2;
  --r:16px; --w:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"PingFang TC","Noto Sans TC","Microsoft JhengHei","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.75;font-size:16.5px;
  background-image:radial-gradient(900px 480px at 85% -10%,rgba(157,123,255,.16),transparent 60%),
    radial-gradient(700px 420px at -10% 30%,rgba(255,93,162,.08),transparent 60%)}
a{color:var(--acc);text-decoration:none}
a:hover{color:#ddc9ff}
img,svg{max-width:100%}
.wrap{max-width:var(--w);margin:0 auto;padding:0 18px}

/* progress */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;pointer-events:none}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc2),var(--pink));transition:width .1s linear}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(18,13,29,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--bord)}
.topbar-in{display:flex;align-items:center;gap:18px;min-height:62px}
.brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-weight:900;font-size:1.12rem;letter-spacing:.02em}
.logo-img{height:40px;width:auto;filter:drop-shadow(0 0 10px rgba(255,209,102,.35))}
.logo-word b{color:var(--acc)}
@media(max-width:400px){.logo-word{display:none}}
.mainnav{display:flex;gap:4px;margin-left:auto}
.mainnav a{padding:8px 13px;border-radius:10px;color:var(--mut);font-weight:700;font-size:.95rem}
.mainnav a:hover{color:var(--ink);background:var(--card)}
.mainnav a[aria-current]{color:var(--ink);background:var(--card)}
.nav-cta{white-space:nowrap}
@media(max-width:860px){.mainnav{display:none}.nav-cta{margin-left:auto}}

/* buttons */
.btn{display:inline-block;padding:13px 22px;border-radius:999px;font-weight:900;letter-spacing:.02em;
  background:linear-gradient(135deg,var(--acc2),#7d5cff);color:#fff;border:0;cursor:pointer;
  box-shadow:0 6px 22px rgba(125,92,255,.35);transition:transform .15s,box-shadow .15s;font-size:1rem}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(125,92,255,.5);color:#fff}
.btn.line{background:linear-gradient(135deg,var(--line),var(--line2));box-shadow:0 6px 22px rgba(6,199,85,.35)}
.btn.line:hover{box-shadow:0 10px 28px rgba(6,199,85,.5)}
.btn.gold{background:linear-gradient(135deg,var(--gold),#ffb01f);color:#3a2a00;box-shadow:0 6px 22px rgba(255,209,102,.3)}
.btn.ghost{background:transparent;border:2px solid var(--bord);color:var(--ink);box-shadow:none}
.btn.ghost:hover{border-color:var(--acc2)}
.btn.small{padding:9px 16px;font-size:.92rem}
.btn.big{padding:16px 30px;font-size:1.1rem}

/* hero */
.hero{padding:54px 0 40px;position:relative;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.25fr .75fr;gap:38px;align-items:center}
@media(max-width:860px){.hero-in{grid-template-columns:1fr}}
.eyebrow{color:var(--pink);font-weight:700;letter-spacing:.08em;font-size:.88rem;margin:0 0 10px}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.4rem);line-height:1.18;margin:0 0 16px;font-weight:900}
.hero h1 span{background:linear-gradient(90deg,var(--acc),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 34px rgba(201,167,255,.25)}
.hero-sub{color:var(--mut);font-size:1.06rem;max-width:34em;margin:0 0 22px}
.hero-stats{display:flex;gap:26px;margin:0 0 24px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:1.5rem;color:var(--gold);font-weight:900}
.hero-stats span{color:var(--mut);font-size:.9rem}
.hero-cta{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.hero-fine{color:var(--mut);font-size:.84rem;margin-top:14px}
.hero-card{display:flex;flex-direction:column;align-items:center;gap:18px}
.hero-banner{display:block;width:100%;max-width:440px;aspect-ratio:16/9;border-radius:18px;overflow:hidden;border:1px solid var(--bord);
  box-shadow:0 18px 50px rgba(0,0,0,.5),0 0 34px rgba(157,123,255,.18);transition:transform .18s}
.hero-banner:hover{transform:translateY(-3px) scale(1.01)}
.hero-banner img{display:block;width:100%;height:100%;object-fit:cover}
.promo-banner{display:block;max-width:760px;border-radius:18px;overflow:hidden;border:1px solid rgba(255,209,102,.4);
  box-shadow:0 14px 40px rgba(0,0,0,.45);margin:1.2em 0;transition:transform .18s}
.promo-banner:hover{transform:translateY(-3px)}
.promo-banner img{display:block;width:100%;height:auto}
.illo-img img{width:100%;height:240px;object-fit:cover;object-position:top center;border-radius:18px;
  border:1px solid var(--bord);display:block}
.gth{width:calc(100% + 40px);margin:-18px -20px 8px;height:150px;object-fit:cover;object-position:top center;
  border-radius:var(--r) var(--r) 0 0;display:block}

/* mini slot */
.slot{background:linear-gradient(160deg,var(--card2),var(--card));border:1px solid var(--bord);border-radius:22px;
  padding:22px;text-align:center;width:min(300px,100%);box-shadow:0 18px 50px rgba(0,0,0,.45),inset 0 0 40px rgba(157,123,255,.07)}
.slot-head{font-weight:900;color:var(--acc);letter-spacing:.1em;margin-bottom:14px}
.reels{display:flex;justify-content:center;gap:10px;margin-bottom:16px}
.reels span{display:grid;place-items:center;width:64px;height:76px;font-size:2rem;background:var(--bg);
  border:1px solid var(--bord);border-radius:12px;box-shadow:inset 0 -14px 20px rgba(0,0,0,.4)}
.reels.spin span{animation:reel .12s linear infinite}
@keyframes reel{50%{transform:translateY(3px) scale(.96)}}
.slot-note{color:var(--mut);font-size:.8rem;margin:12px 0 0;min-height:2.2em}

/* content */
.content-wrap{padding:34px 0 60px}
.prose{max-width:760px}
.prose h2{font-size:1.5rem;margin:2em 0 .6em;font-weight:900;padding-left:14px;border-left:4px solid var(--acc2)}
.prose h3{font-size:1.12rem;margin:1.5em 0 .4em;color:var(--acc)}
.prose p{margin:.7em 0}
.prose li{margin:.35em 0}
.prose table{border-collapse:collapse;width:100%;margin:1.2em 0;font-size:.97rem}
.prose th,.prose td{border:1px solid var(--bord);padding:10px 12px;text-align:left;vertical-align:top}
.prose th{background:var(--card);color:var(--acc);font-weight:700}
.prose tr:nth-child(even) td{background:rgba(34,26,56,.5)}
.page-head{padding:44px 0 6px}
.page-head .wrap,.page-head{max-width:var(--w);margin:0 auto;padding-left:18px;padding-right:18px}
.crumbs{color:var(--mut);font-size:.88rem;margin-bottom:10px}
.page-head h1{font-size:clamp(1.7rem,4.5vw,2.5rem);margin:0 0 10px;font-weight:900}
.lede{color:var(--mut);max-width:44em;font-size:1.04rem;margin:0}
.upd{color:var(--mut);font-size:.84rem;margin:10px 0 0;opacity:.85}
.illo{margin:0 0 22px}
.illo svg{border-radius:18px;width:100%;height:auto}

/* tldr 懶人包 */
.tldr{background:linear-gradient(150deg,rgba(157,123,255,.14),rgba(255,93,162,.08));border:1px solid var(--acc2);
  border-radius:var(--r);padding:18px 22px;margin:0 0 26px}
.tldr-k{font-weight:900;color:var(--acc);letter-spacing:.14em;margin:0 0 8px;font-size:.92rem}
.tldr-k::before{content:"⚡ "}
.tldr ul{margin:0;padding-left:1.2em}
.tldr li{margin:.4em 0}

/* steps */
.steps{counter-reset:st;list-style:none;padding:0;margin:1.2em 0}
.steps li{counter-increment:st;position:relative;padding:14px 16px 14px 58px;margin:10px 0;background:var(--card);
  border:1px solid var(--bord);border-radius:var(--r)}
.steps li::before{content:counter(st);position:absolute;left:14px;top:14px;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--acc2),var(--pink));font-size:.95rem}

/* feature / game grids (home) */
.feature-band h2,.prose>h2:first-child{margin-top:.6em}
.feat-grid,.game-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:1.2em 0}
@media(max-width:640px){.feat-grid,.game-grid{grid-template-columns:1fr}}
.feat,.game{background:var(--card);border:1px solid var(--bord);border-radius:var(--r);padding:18px 20px;
  transition:transform .18s,border-color .18s,box-shadow .18s}
.feat:hover,.game:hover{transform:translateY(-4px);border-color:var(--acc2);box-shadow:0 12px 32px rgba(0,0,0,.35)}
.feat h3{margin:.4em 0 .3em;font-size:1.05rem}
.feat p{margin:0;color:var(--mut);font-size:.93rem}
.fi,.gi{font-size:1.7rem;display:inline-grid;place-items:center;width:52px;height:52px;border-radius:14px;
  background:linear-gradient(150deg,rgba(157,123,255,.22),rgba(255,93,162,.12));border:1px solid var(--bord)}
.game{display:flex;flex-direction:column;gap:6px;color:var(--ink);overflow:hidden}
.game b{font-size:1.08rem;font-weight:900}
.game>span:last-child{color:var(--mut);font-size:.9rem}
.game:hover{color:var(--ink)}

/* honest box */
.honest{background:var(--card);border-left:4px solid var(--gold);border-radius:0 var(--r) var(--r) 0;padding:16px 20px;margin:1.2em 0}
.honest p{margin:.5em 0}

/* cta-box / convbar */
.cta-box{display:flex;gap:18px;align-items:flex-start;background:linear-gradient(150deg,rgba(6,199,85,.13),rgba(157,123,255,.1));
  border:1px solid rgba(6,199,85,.45);border-radius:var(--r);padding:22px;margin:2em 0}
.cta-paw{font-size:2.2rem;filter:drop-shadow(0 0 12px rgba(6,199,85,.5))}
.cta-k{font-weight:900;font-size:1.15rem;margin:0 0 6px;color:#7dffb0}
.cta-box p{margin:.4em 0 .9em;color:var(--ink)}
.cta-fine{color:var(--mut)!important;font-size:.8rem;margin-top:10px!important}
.convbar{display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--card);
  border:1px solid var(--bord);border-radius:var(--r);padding:18px 22px;margin:2.2em 0 0;max-width:760px}
.convbar span{color:var(--mut);font-size:.92rem}

/* toc & related */
.toc{background:var(--card);border:1px solid var(--bord);border-radius:var(--r);padding:12px 18px;margin:0 0 24px;max-width:760px}
.toc summary{font-weight:900;color:var(--acc);cursor:pointer}
.toc ol{margin:.6em 0 .3em;padding-left:1.3em}
.related{margin:3em 0 0;max-width:760px}
.related h2{font-size:1.3rem;font-weight:900}
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(max-width:640px){.rel-grid{grid-template-columns:1fr}}
.rel{display:flex;flex-direction:column;gap:4px;background:var(--card);border:1px solid var(--bord);border-radius:var(--r);
  padding:14px 16px;color:var(--ink);transition:border-color .15s,transform .15s}
.rel:hover{border-color:var(--acc2);transform:translateY(-2px);color:var(--ink)}
.rel span{color:var(--mut);font-size:.86rem}

/* footer */
.foot{border-top:1px solid var(--bord);margin-top:40px;padding:38px 0 96px;background:var(--bg2)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-brand{font-size:1.1rem}
.foot p{color:var(--mut);font-size:.9rem}
.fh{font-weight:900;color:var(--ink);margin:0 0 8px}
.foot a{display:block;color:var(--mut);padding:3px 0;font-size:.92rem}
.foot a:hover{color:var(--acc)}
.age{margin-top:26px;padding:14px 18px;border:1px dashed var(--bord);border-radius:var(--r);color:var(--mut);font-size:.86rem}
.age b{color:var(--gold)}
.copy{color:#6d6287;font-size:.82rem}

/* bottom bar (mobile) */
.bottombar{position:fixed;left:0;right:0;bottom:0;z-index:55;display:none;grid-template-columns:repeat(4,1fr);
  background:rgba(26,19,41,.96);backdrop-filter:blur(10px);border-top:1px solid var(--bord);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
@media(max-width:860px){.bottombar{display:grid}}
.bottombar a{display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--mut);font-size:.72rem;font-weight:700;padding:4px 2px;border-radius:10px}
.bottombar .bi{font-size:1.25rem}
.bottombar a.cta{color:#fff;background:linear-gradient(135deg,var(--line),var(--line2));margin:0 4px;box-shadow:0 4px 14px rgba(6,199,85,.4)}

/* reveal */
.rv{opacity:0;transform:translateY(14px);transition:opacity .5s,transform .5s}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}