/* ============================================================
   CTM (赤兔馬) — Design System v2 (with imagery)
   Brand: black + metallic gold + silver
   Aligns with rrh1788.com palette: #FFCD00 / #262835
   ============================================================ */

/* --- Reset --------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul[role="list"],ol[role="list"]{list-style:none;padding:0;margin:0}
img,picture,svg,video{display:block;max-width:100%;height:auto}
input,button,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--c-gold);outline-offset:2px;border-radius:4px}

/* --- Tokens -------------------------------------------------- */
:root{
  /* Brand color: black + metallic gold + silver — matches official CTM logo */
  --c-bg:#0a0a0c;
  --c-bg-2:#15151a;
  --c-surface:#1d1d24;
  --c-surface-2:#262630;
  --c-border:#2c2c36;
  --c-border-strong:#3a3a46;
  --c-text:#f4f4f7;
  --c-text-2:#b8b8c0;
  --c-text-3:#7c7c86;
  /* Primary gold (matches rrh1788 #FFCD00) */
  --c-gold:#ffcd00;
  --c-gold-2:#ffe168;
  --c-gold-deep:#b8860b;
  --c-silver:#c8c8d0;
  --c-silver-2:#e8e8ec;
  --c-red:#e63946;
  --c-red-2:#ff566b;
  --c-green:#00bc67;
  --c-blue:#3b82f6;

  /* spacing */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:20px;
  --s-6:24px; --s-8:32px; --s-10:40px; --s-12:48px;
  --s-16:64px; --s-20:80px; --s-24:96px;

  /* radius */
  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-xl:24px; --r-pill:999px;

  /* shadow */
  --sh-1:0 1px 2px rgba(0,0,0,.5);
  --sh-2:0 8px 24px rgba(0,0,0,.5);
  --sh-3:0 16px 48px rgba(0,0,0,.6);
  --sh-gold:0 0 0 1px rgba(255,205,0,.4),0 12px 32px rgba(255,205,0,.22);
  --sh-gold-strong:0 0 0 1px rgba(255,205,0,.6),0 8px 24px rgba(255,205,0,.4);

  /* type scale */
  --fz-xs:0.78rem;
  --fz-sm:0.88rem;
  --fz-base:1rem;
  --fz-lg:1.13rem;
  --fz-xl:1.28rem;
  --fz-2xl:clamp(1.45rem,1.2rem + 1vw,1.85rem);
  --fz-3xl:clamp(1.85rem,1.4rem + 2vw,2.6rem);
  --fz-4xl:clamp(2.4rem,1.6rem + 3.5vw,3.6rem);

  /* layout */
  --container:1240px;
  --container-narrow:880px;

  /* motion */
  --ease:cubic-bezier(.2,.7,.2,1);
  --t-fast:120ms;
  --t-base:220ms;
  --t-slow:380ms;
}

/* --- Base ---------------------------------------------------- */
html,body{background:var(--c-bg);color:var(--c-text)}
body{
  font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",
    -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:var(--fz-base);
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:"Noto Serif TC","Songti TC",serif;font-weight:700;line-height:1.2;letter-spacing:.01em}
h1{font-size:var(--fz-4xl)}
h2{font-size:var(--fz-3xl)}
h3{font-size:var(--fz-2xl)}
h4{font-size:var(--fz-xl)}
p{color:var(--c-text-2);max-width:68ch}
a{transition:color var(--t-fast) var(--ease)}
a:hover{color:var(--c-gold-2)}
.gold{color:var(--c-gold)}
.muted{color:var(--c-text-3)}

/* --- Layout helpers ----------------------------------------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--s-5)}
.container.narrow{max-width:var(--container-narrow)}
.section{padding-block:var(--s-16)}
.section-sm{padding-block:var(--s-10)}
@media (min-width:768px){
  .container{padding-inline:var(--s-8)}
  .section{padding-block:var(--s-20)}
}

.grid{display:grid;gap:var(--s-5)}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.flex{display:flex;gap:var(--s-4)}
.flex.center{align-items:center;justify-content:center}
.flex.between{align-items:center;justify-content:space-between}
.flex.col{flex-direction:column}
.stack > * + *{margin-top:var(--s-4)}
.stack-lg > * + *{margin-top:var(--s-6)}

/* --- Header / Nav ------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,10,12,.86);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--c-border);
}
.site-header .row{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;gap:var(--s-4);
}

/* Brand: image-based logo */
.brand{display:flex;align-items:center;gap:var(--s-3);text-decoration:none}
.brand img{height:42px;width:auto;display:block}
.brand-text{
  font-family:"Noto Serif TC",serif;font-weight:700;font-size:1.1rem;
  display:none;
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
@media (min-width:480px){.brand img{height:46px}}

.nav{display:none}
.nav > ul{display:flex;gap:var(--s-5);list-style:none;padding:0;margin:0;align-items:center}
.nav > ul > li{position:relative}
.nav > ul > li > a{
  font-size:var(--fz-sm);color:var(--c-text-2);font-weight:500;
  padding:24px 4px;position:relative;
  display:inline-flex;align-items:center;
}
.nav > ul > li > a:hover,
.nav > ul > li > a[aria-current="page"],
.nav > ul > li:hover > a{color:var(--c-gold)}
.nav > ul > li > a[aria-current="page"]::after,
.nav > ul > li:hover > a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:linear-gradient(90deg,var(--c-gold-deep) 0%,var(--c-gold) 50%,var(--c-gold-deep) 100%);
  border-radius:2px;
}
.nav > ul > li > a[aria-current="page"]::after{height:2px}
.nav > ul > li:hover > a:not([aria-current="page"])::after{
  height:2px;animation:underline-in .25s var(--ease) both;
}
@keyframes underline-in{from{transform:scaleX(0);opacity:0}to{transform:scaleX(1);opacity:1}}
@media (min-width:1024px){.nav{display:block}.nav-toggle{display:none}}

.nav-toggle{
  width:42px;height:42px;display:grid;place-items:center;border-radius:var(--r-sm);
  border:1px solid var(--c-border);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text)}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

.nav-drawer{
  position:fixed;inset:68px 0 0 0;background:var(--c-bg);
  transform:translateX(100%);transition:transform var(--t-base) var(--ease);
  z-index:99;padding:var(--s-6);overflow-y:auto;
}
.nav-drawer[data-open="true"]{transform:translateX(0)}
.nav-drawer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--s-4)}
.nav-drawer a{display:block;padding:var(--s-3) var(--s-4);font-size:var(--fz-lg);border-bottom:1px solid var(--c-border)}

/* --- Announcement marquee bar ------------------------------ */
.announce{
  background:linear-gradient(90deg,rgba(255,205,0,.06) 0%,rgba(230,57,70,.05) 50%,rgba(255,205,0,.06) 100%);
  border-bottom:1px solid var(--c-border);
  font-size:var(--fz-xs);color:var(--c-text-2);
  overflow:hidden;height:36px;line-height:36px;
  display:flex;align-items:center;
}
.announce .label{
  flex:0 0 auto;padding:0 var(--s-3);
  font-weight:600;color:var(--c-gold);
  display:inline-flex;align-items:center;gap:6px;
  border-right:1px solid var(--c-border);height:100%;
}
.announce .label::before{content:"📢";font-size:1rem}
.announce .scroll{
  flex:1;overflow:hidden;position:relative;mask-image:linear-gradient(90deg,transparent 0,#000 4%,#000 96%,transparent 100%);-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 4%,#000 96%,transparent 100%);
}
.announce .track{
  display:inline-flex;gap:48px;white-space:nowrap;
  animation:marquee 38s linear infinite;
  padding-left:100%;
}
.announce .track:hover{animation-play-state:paused}
.announce .track span{display:inline-flex;align-items:center;gap:6px}
.announce .track span::before{content:"●";color:var(--c-gold);font-size:.5rem}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-100%)}}

/* --- Mega menu (desktop hover dropdown) -------------------- */
.nav .has-mega{position:relative}
.nav .has-mega > a::after{
  content:"▾";font-size:.6rem;margin-left:4px;opacity:.6;
  transition:transform var(--t-fast) var(--ease);
}
.nav .has-mega:hover > a::after,
.nav .has-mega:focus-within > a::after{transform:rotate(180deg);opacity:1}
.mega{
  position:absolute;left:50%;top:100%;transform:translateX(-50%) translateY(8px);
  min-width:580px;background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:var(--s-5);box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility 0s linear var(--t-fast);
  z-index:50;
}
.has-mega:hover > .mega,.has-mega:focus-within > .mega{
  opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0);
  transition:opacity var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),visibility 0s;
}
.mega .grid{grid-template-columns:repeat(2,1fr);gap:var(--s-3)}
.mega-item{
  display:flex;gap:var(--s-3);padding:var(--s-3);border-radius:var(--r-md);
  align-items:center;transition:background var(--t-fast) var(--ease);
  text-decoration:none;
}
.mega-item:hover{background:var(--c-surface-2)}
.mega-item .ico{
  flex:0 0 auto;width:46px;height:46px;border-radius:var(--r-md);
  background:linear-gradient(135deg,rgba(255,205,0,.18),rgba(184,134,11,.06));
  border:1px solid rgba(255,205,0,.25);
  display:grid;place-items:center;font-size:1.4rem;color:var(--c-gold);
}
.mega-item .ico img{width:32px;height:auto;filter:saturate(.95)}
.mega-item .meta strong{display:block;font-size:var(--fz-sm);color:var(--c-text);margin-bottom:2px}
.mega-item .meta span{display:block;font-size:.72rem;color:var(--c-text-3);line-height:1.4}
.mega-item:hover .meta strong{color:var(--c-gold)}
.mega-foot{margin-top:var(--s-4);padding-top:var(--s-4);border-top:1px solid var(--c-border);display:flex;justify-content:space-between;align-items:center;font-size:var(--fz-xs)}
.mega-foot a{color:var(--c-gold);font-weight:600}

/* --- Banner carousel (CSS scroll-snap) --------------------- */
.banner-carousel{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--c-border);
}
.banner-carousel .track{
  display:flex;overflow-x:auto;scroll-snap-type:x mandatory;
  scrollbar-width:none;-ms-overflow-style:none;
  scroll-behavior:smooth;
}
.banner-carousel .track::-webkit-scrollbar{display:none}
.banner-slide{
  flex:0 0 100%;scroll-snap-align:start;position:relative;
  height:clamp(220px,38vw,460px);
  background-size:cover;background-position:center;
  display:flex;align-items:center;
}
/* Official banner slide — image fills entire slide, no overlay */
.banner-slide.official{
  display:block;height:auto;text-decoration:none;
  background:#0a0a0c;
}
.banner-slide.official img{
  width:100%;height:auto;display:block;
  aspect-ratio:1024 / 350;
  object-fit:cover;
  transition:transform .8s var(--ease);
}
.banner-slide.official:hover img{transform:scale(1.02)}
/* Plain text-overlay slides keep gradient */
.banner-slide:not(.official)::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(10,10,12,.85) 0%,rgba(10,10,12,.55) 50%,rgba(10,10,12,.4) 100%),
             linear-gradient(180deg,rgba(10,10,12,.2) 0%,rgba(10,10,12,.6) 100%);
}
.banner-slide .container{position:relative;z-index:2}
.banner-slide .eyebrow{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,205,0,.15);color:var(--c-gold);
  font-size:var(--fz-xs);font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  margin-bottom:var(--s-4);border:1px solid rgba(255,205,0,.3);
}
.banner-slide h2{
  font-size:clamp(1.6rem,2.4vw + .8rem,3rem);
  margin-bottom:var(--s-3);max-width:18ch;
  line-height:1.15;
}
.banner-slide h2 .glow{
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold) 60%,var(--c-gold-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.banner-slide p{font-size:var(--fz-base);color:var(--c-text);max-width:48ch;margin-bottom:var(--s-5)}
.banner-slide .cta{display:flex;gap:var(--s-3);flex-wrap:wrap}
.banner-dots{
  position:absolute;bottom:14px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:3;
}
.banner-dots button{
  width:32px;height:6px;border-radius:3px;background:rgba(255,255,255,.3);
  border:0;padding:0;cursor:pointer;transition:all var(--t-fast) var(--ease);
}
.banner-dots button[aria-current="true"]{background:var(--c-gold);width:48px}
.banner-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:44px;height:44px;border-radius:50%;
  background:rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.2);
  color:var(--c-text);font-size:1.2rem;display:none;place-items:center;
  cursor:pointer;transition:all var(--t-fast) var(--ease);
}
.banner-arrow:hover{background:var(--c-gold);color:#15151a}
.banner-arrow.prev{left:16px}.banner-arrow.next{right:16px}
@media (min-width:768px){.banner-arrow{display:grid}}

/* --- Buttons ------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);
  padding:12px 22px;border-radius:var(--r-pill);
  font-weight:600;font-size:var(--fz-sm);
  transition:transform var(--t-fast) var(--ease),background var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),filter var(--t-fast) var(--ease);
  white-space:nowrap;line-height:1;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.primary{
  background:linear-gradient(180deg,var(--c-gold-2) 0%,var(--c-gold) 60%,var(--c-gold-deep) 100%);
  color:#15151a;box-shadow:var(--sh-gold);
  border:1px solid var(--c-gold);
}
.btn.primary:hover{filter:brightness(1.1) saturate(1.05);color:#15151a;box-shadow:var(--sh-gold-strong)}
.btn.ghost{
  background:rgba(255,255,255,.04);color:var(--c-text);
  border:1px solid var(--c-border-strong);
}
.btn.ghost:hover{border-color:var(--c-gold);color:var(--c-gold)}
.btn.lg{padding:16px 32px;font-size:var(--fz-base)}
.btn.sm{padding:8px 14px;font-size:var(--fz-xs)}

/* --- Cards --------------------------------------------------- */
.card{
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-bg-2) 100%);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:var(--s-6);
  transition:transform var(--t-base) var(--ease),border-color var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-3px);border-color:var(--c-gold-deep);box-shadow:var(--sh-2)}
.card .icon{
  width:52px;height:52px;border-radius:var(--r-md);
  background:linear-gradient(135deg,rgba(255,205,0,.2),rgba(184,134,11,.08));
  border:1px solid rgba(255,205,0,.3);
  display:grid;place-items:center;color:var(--c-gold);font-size:1.6rem;margin-bottom:var(--s-4);
}
.card h3{font-size:var(--fz-xl);margin-bottom:var(--s-2)}
.card p{font-size:var(--fz-sm);color:var(--c-text-2)}

/* --- Hero ---------------------------------------------------- */
.hero{
  position:relative;padding-block:var(--s-16) var(--s-12);
  background:var(--c-bg);
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background-size:cover;background-position:center;background-repeat:no-repeat;
  opacity:.32;
  filter:saturate(.5) contrast(1.05);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,10,12,.4) 0%,rgba(10,10,12,.85) 60%,rgba(10,10,12,.98) 100%),
    radial-gradient(ellipse at 80% 20%, rgba(255,205,0,.18) 0%, transparent 60%),
    radial-gradient(ellipse at 10% 90%, rgba(230,57,70,.1) 0%, transparent 50%);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:
    linear-gradient(rgba(255,205,0,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,205,0,.04) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at center,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at center,#000 0%,transparent 70%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:var(--s-2);
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,205,0,.12);border:1px solid rgba(255,205,0,.35);
  color:var(--c-gold);font-size:var(--fz-xs);font-weight:600;letter-spacing:.05em;
  margin-bottom:var(--s-5);text-transform:uppercase;
}
.hero h1{margin-bottom:var(--s-5);max-width:14ch}
.hero h1 .highlight{
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold) 60%,var(--c-gold-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 4px 16px rgba(255,205,0,.2);
}
.hero .lead{font-size:var(--fz-lg);color:var(--c-text-2);max-width:52ch;margin-bottom:var(--s-8)}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:var(--s-3);align-items:center}
.hero .stats{
  margin-top:var(--s-12);display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--s-6);
  padding-top:var(--s-8);border-top:1px solid var(--c-border);
}
.hero .stats dt{font-size:var(--fz-xs);color:var(--c-text-3);letter-spacing:.1em;text-transform:uppercase;margin-bottom:var(--s-1)}
.hero .stats dd{font-family:"Noto Serif TC",serif;font-size:var(--fz-2xl);font-weight:700;color:var(--c-gold);margin:0}

/* Hero with side mascot illustration */
.hero.with-mascot .container{display:grid;grid-template-columns:1fr;gap:var(--s-8);align-items:center}
.hero.with-mascot .mascot{justify-self:center;max-width:340px}
.hero.with-mascot .mascot img{width:100%;height:auto;filter:drop-shadow(0 16px 32px rgba(0,0,0,.5)) drop-shadow(0 0 24px rgba(255,205,0,.15))}
@media (min-width:900px){
  .hero.with-mascot .container{grid-template-columns:1.2fr .8fr}
  .hero.with-mascot .mascot{max-width:420px}
}

/* --- Section header ----------------------------------------- */
.section-head{text-align:center;margin-bottom:var(--s-12);max-width:720px;margin-inline:auto}
.section-head .eyebrow{display:inline-block;color:var(--c-gold);font-size:var(--fz-xs);letter-spacing:.18em;text-transform:uppercase;margin-bottom:var(--s-3)}
.section-head h2{margin-bottom:var(--s-3)}
.section-head p{margin-inline:auto}

/* --- Trust strip -------------------------------------------- */
.trust-strip{
  border-block:1px solid var(--c-border);
  background:linear-gradient(180deg,var(--c-bg-2),var(--c-bg));
  padding-block:var(--s-6);
}
.trust-strip ul{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:var(--s-5);text-align:center;
}
.trust-strip li{display:flex;flex-direction:column;align-items:center;gap:var(--s-1);color:var(--c-text-3);font-size:var(--fz-xs)}
.trust-strip strong{color:var(--c-text);font-size:var(--fz-base);font-weight:600}

/* --- Game category cards (with imagery) -------------------- */
.game-card{
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-surface-2) 100%);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  position:relative;overflow:hidden;
  transition:all var(--t-base) var(--ease);
  display:flex;flex-direction:column;
}
.game-card:hover{transform:translateY(-4px);border-color:var(--c-gold-deep);box-shadow:var(--sh-2)}
.game-card .visual{
  position:relative;height:200px;overflow:hidden;
  background:linear-gradient(135deg,#1a1a22 0%,#0e0e14 100%);
  display:grid;place-items:center;
}
.game-card .visual.full-bleed{padding:0}
.game-card .visual.full-bleed img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(1.05) contrast(1.05);
  transform:scale(1.04);
  transition:transform .6s var(--ease),filter var(--t-base) var(--ease);
}
.game-card:hover .visual.full-bleed img{transform:scale(1.12)}
.game-card .visual.illust{padding:var(--s-3)}
.game-card .visual.illust img{
  width:auto;height:80%;max-width:85%;object-fit:contain;
  filter:drop-shadow(0 8px 20px rgba(0,0,0,.55)) drop-shadow(0 0 24px rgba(255,205,0,.08));
  transition:transform .4s var(--ease);
}
.game-card:hover .visual.illust img{transform:scale(1.06) translateY(-4px)}
.game-card .visual.logos{
  display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:18px;
}
.game-card .visual.logos img{
  width:100%;height:auto;max-height:64px;object-fit:contain;
  filter:saturate(.95) brightness(1.1) drop-shadow(0 4px 8px rgba(0,0,0,.4));
  transition:filter var(--t-fast) var(--ease);
}
.game-card:hover .visual.logos img{filter:saturate(1.2) brightness(1.25) drop-shadow(0 6px 14px rgba(255,205,0,.2))}
.game-card .visual::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at center top, rgba(255,205,0,.12) 0%, transparent 60%);
  pointer-events:none;z-index:1;
}
.game-card .visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.55) 100%);
  pointer-events:none;z-index:1;
}
.game-card .visual .label{
  position:absolute;bottom:10px;left:50%;transform:translateX(-50%);
  z-index:2;font-family:"Noto Serif TC",serif;font-weight:700;
  font-size:1.05rem;letter-spacing:.08em;
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold) 60%,var(--c-gold-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 8px rgba(0,0,0,.6);
  pointer-events:none;
}
.game-card.gradient-sport .visual{background:linear-gradient(135deg,#1a2942 0%,#0e1424 100%)}
.game-card.gradient-live  .visual{background:linear-gradient(135deg,#3d1a1a 0%,#1a0e0e 100%)}
.game-card.gradient-slot  .visual{background:linear-gradient(135deg,#3d2a1a 0%,#1a140e 100%)}
.game-card.gradient-lotto .visual{background:linear-gradient(135deg,#1a3d2a 0%,#0e1a14 100%)}

.game-card .body{padding:var(--s-6);display:flex;flex-direction:column;flex:1}
.game-card .badge{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,205,0,.15);color:var(--c-gold);
  font-size:var(--fz-xs);font-weight:600;margin-bottom:var(--s-3);align-self:flex-start;
}
.game-card h3{font-size:var(--fz-xl);margin-bottom:var(--s-2)}
.game-card .features{list-style:none;padding:0;margin:var(--s-3) 0 var(--s-5);font-size:var(--fz-sm);color:var(--c-text-2)}
.game-card .features li{padding-left:24px;position:relative;margin-bottom:var(--s-1)}
.game-card .features li::before{
  content:"";position:absolute;left:4px;top:.7em;width:10px;height:6px;
  border-left:2px solid var(--c-gold);border-bottom:2px solid var(--c-gold);transform:rotate(-45deg);
}
.game-card .more{
  font-size:var(--fz-sm);color:var(--c-gold);font-weight:600;margin-top:auto;
  display:inline-flex;align-items:center;gap:var(--s-1);
}
.game-card .more::after{content:"→";transition:transform var(--t-fast) var(--ease)}
.game-card:hover .more::after{transform:translateX(4px)}

/* --- Provider logo wall ----------------------------------- */
.logo-wall{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(110px,1fr));
  gap:var(--s-3);
}
.logo-wall li{
  list-style:none;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);
  height:80px;display:grid;place-items:center;padding:var(--s-3);
  transition:all var(--t-fast) var(--ease);
}
.logo-wall li:hover{border-color:var(--c-gold-deep);background:var(--c-surface-2);transform:translateY(-2px)}
.logo-wall img{
  max-width:100%;max-height:48px;width:auto;height:auto;
  filter:saturate(.9) brightness(1.1);
  transition:filter var(--t-fast) var(--ease);
}
.logo-wall li:hover img{filter:saturate(1.1) brightness(1.2)}

/* --- Filter tabs -------------------------------------------- */
.filter-tabs{
  display:flex;flex-wrap:wrap;gap:var(--s-2);
  padding:var(--s-2);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-pill);
  margin-bottom:var(--s-8);
  overflow-x:auto;
}
.filter-tabs button{
  padding:8px 18px;border-radius:var(--r-pill);
  font-size:var(--fz-sm);font-weight:500;color:var(--c-text-2);
  white-space:nowrap;
  transition:all var(--t-fast) var(--ease);
}
.filter-tabs button:hover{color:var(--c-text)}
.filter-tabs button[aria-pressed="true"]{
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold) 60%,var(--c-gold-deep));
  color:#15151a;box-shadow:var(--sh-1);
}

/* --- Promo card --------------------------------------------- */
.promo-card{
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-surface-2) 100%);
  border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:var(--s-6);position:relative;overflow:hidden;
  display:flex;flex-direction:column;
  transition:all var(--t-base) var(--ease);
}
.promo-card:hover{transform:translateY(-3px);border-color:var(--c-gold-deep);box-shadow:var(--sh-2)}
.promo-card.with-art{padding-top:0}
.promo-card .art{
  display:block;position:relative;overflow:hidden;
  margin:0 calc(-1 * var(--s-6)) var(--s-4);
  height:180px;border-bottom:1px solid var(--c-border);
  text-decoration:none;
}
.promo-card .art-img{
  position:absolute;inset:0;display:block;
  background-size:cover;background-position:center;background-repeat:no-repeat;
  transition:transform .6s var(--ease),filter var(--t-base) var(--ease);
}
.promo-card .art-img.full-bleed{
  background-size:cover;
  filter:saturate(1.05);
}
.promo-card .art-img.illust{
  background-size:contain;background-position:center;
  background-color:#1a1a22;
  background-image-repeat:no-repeat;
  filter:drop-shadow(0 8px 16px rgba(0,0,0,.4));
  background-color:linear-gradient(135deg,rgba(255,205,0,.06),rgba(184,134,11,.02));
}
.promo-card .art::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(0,0,0,.15) 0%,rgba(0,0,0,.65) 100%);
  pointer-events:none;
}
.promo-card .art-label{
  position:absolute;left:18px;bottom:14px;z-index:2;
  font-family:"Noto Serif TC",serif;font-weight:700;
  font-size:1.05rem;letter-spacing:.01em;color:#fff;
  text-shadow:0 2px 8px rgba(0,0,0,.7),0 0 12px rgba(0,0,0,.5);
  max-width:calc(100% - 36px);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.promo-card .art:hover .art-img{transform:scale(1.06);filter:saturate(1.15) brightness(1.05)}
.promo-card:hover .art::before{background:linear-gradient(180deg,rgba(0,0,0,.05) 0%,rgba(0,0,0,.55) 100%)}
.promo-card .art::after{
  content:"立即申請 →";
  position:absolute;right:14px;top:14px;z-index:2;
  font-size:var(--fz-xs);font-weight:600;color:#15151a;
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold));
  padding:5px 11px;border-radius:var(--r-pill);
  opacity:0;transform:translateX(8px);
  transition:all var(--t-fast) var(--ease);
  box-shadow:0 4px 12px rgba(255,205,0,.35);
}
.promo-card .art:hover::after{opacity:1;transform:translateX(0)}
.promo-card .top{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:var(--s-3);margin-bottom:var(--s-3);
}
.promo-card.with-art .top{padding-top:var(--s-6)}
.promo-card .badge-row{display:flex;gap:var(--s-1);flex-wrap:wrap}
.promo-card .badge{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  font-size:var(--fz-xs);font-weight:600;letter-spacing:.02em;
  background:rgba(255,205,0,.15);color:var(--c-gold);
}
.promo-card .badge.live{background:rgba(0,188,103,.15);color:#3fd989}
.promo-card .badge.live::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:#3fd989;margin-right:6px;vertical-align:middle;
  box-shadow:0 0 0 0 rgba(63,217,137,.4);
  animation:pulse 1.6s ease-out infinite;
}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(63,217,137,.5)}80%{box-shadow:0 0 0 8px rgba(63,217,137,0)}100%{box-shadow:0 0 0 0 rgba(63,217,137,0)}}
.promo-card .badge.new{background:rgba(255,86,107,.15);color:var(--c-red-2)}
.promo-card .badge.vip{background:linear-gradient(135deg,rgba(255,205,0,.3),rgba(255,225,104,.18));color:var(--c-gold-2)}

.promo-card .reward{
  text-align:right;flex-shrink:0;
  font-family:"Noto Serif TC",serif;
}
.promo-card .reward .num{
  font-size:1.7rem;font-weight:700;line-height:1;
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.promo-card .reward .unit{font-size:var(--fz-xs);color:var(--c-text-3);display:block;margin-top:2px}

.promo-card h3{font-size:var(--fz-lg);margin-bottom:var(--s-2);line-height:1.35}
.promo-card .desc{font-size:var(--fz-sm);color:var(--c-text-2);margin-bottom:var(--s-4);flex-grow:1}
.promo-card .meta{
  display:flex;flex-wrap:wrap;gap:var(--s-3);
  font-size:var(--fz-xs);color:var(--c-text-3);
  padding-top:var(--s-3);border-top:1px dashed var(--c-border);
  margin-bottom:var(--s-4);
}
.promo-card .meta dt{color:var(--c-text-3);font-weight:400;display:inline}
.promo-card .meta dd{color:var(--c-text);font-weight:600;display:inline;margin:0 var(--s-2) 0 var(--s-1)}
.promo-card .actions{display:flex;gap:var(--s-2)}
.promo-card .actions .btn{flex:1;text-align:center;justify-content:center}
.promo-card details summary{
  cursor:pointer;list-style:none;
  font-size:var(--fz-xs);color:var(--c-text-3);
  padding:var(--s-2) 0;margin-top:var(--s-3);
  border-top:1px dashed var(--c-border);
  display:flex;align-items:center;gap:var(--s-1);
}
.promo-card details summary::-webkit-details-marker{display:none}
.promo-card details summary::after{content:"展開條款 ▾";color:var(--c-gold)}
.promo-card details[open] summary::after{content:"收起條款 ▴"}
.promo-card details .terms{
  font-size:var(--fz-xs);color:var(--c-text-2);
  padding:var(--s-3) 0 0;line-height:1.7;
}
.promo-card details .terms ul{padding-left:1.2em;margin:0}
.promo-card details .terms li{margin-bottom:4px}

/* --- Promo grid --------------------------------------------- */
.promo-grid{display:grid;gap:var(--s-5);grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
@media (min-width:1100px){.promo-grid{grid-template-columns:repeat(3,1fr)}}

/* --- Promo list (banner-style cards, mirrors rrh1788.com) --- */
.promo-list{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--s-6);
}
@media (min-width:720px){.promo-list{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1180px){.promo-list{grid-template-columns:repeat(3,1fr)}}

.promo-card.banner-card{
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-bg-2) 100%);
  border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:0;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform var(--t-base) var(--ease),border-color var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
}
.promo-card.banner-card:hover{
  transform:translateY(-4px);
  border-color:var(--c-gold-deep);
  box-shadow:0 16px 40px rgba(0,0,0,.55),0 0 0 1px rgba(255,205,0,.18);
}

.promo-banner{
  display:block;position:relative;
  aspect-ratio:1024 / 350;
  overflow:hidden;background:#0a0a0c;
  border-bottom:1px solid var(--c-border);
}
.promo-banner img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .6s var(--ease);
}
.promo-banner:hover img{transform:scale(1.04)}
.promo-banner::after{
  content:"申請 →";
  position:absolute;right:14px;top:14px;z-index:2;
  font-size:var(--fz-xs);font-weight:700;color:#15151a;
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold));
  padding:6px 14px;border-radius:var(--r-pill);
  opacity:0;transform:translateX(8px);
  transition:all var(--t-fast) var(--ease);
  box-shadow:0 6px 16px rgba(255,205,0,.4);
}
.promo-banner:hover::after{opacity:1;transform:translateX(0)}

.promo-info{
  padding:var(--s-5) var(--s-6);
  display:flex;flex-direction:column;gap:var(--s-2);
}
.promo-info h2{
  font-family:"Noto Serif TC",serif;font-weight:700;
  font-size:var(--fz-lg);line-height:1.35;margin:0;
  color:var(--c-text);
  background:linear-gradient(180deg,var(--c-gold-2),var(--c-gold));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.promo-info time{
  font-size:var(--fz-xs);color:var(--c-text-3);
  font-family:"SF Mono","Roboto Mono",monospace;letter-spacing:.04em;
  display:inline-flex;align-items:center;gap:6px;
}
.promo-info time::before{content:"●";color:var(--c-gold);font-size:.5rem}
.promo-info .btn{align-self:flex-start;margin-top:var(--s-2)}

/* --- FAQ ----------------------------------------------------- */
.faq{display:flex;flex-direction:column;gap:var(--s-3)}
.faq details{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);padding:var(--s-5) var(--s-6);
  transition:border-color var(--t-base) var(--ease);
}
.faq details[open]{border-color:var(--c-gold-deep)}
.faq summary{
  font-weight:600;font-size:var(--fz-base);cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:var(--s-4);
  color:var(--c-text);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:1.4rem;line-height:1;color:var(--c-gold);
  transition:transform var(--t-base) var(--ease);
}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:var(--s-3);font-size:var(--fz-sm);color:var(--c-text-2)}

/* --- Footer -------------------------------------------------- */
.site-footer{
  margin-top:var(--s-20);padding:var(--s-12) 0 var(--s-6);
  background:linear-gradient(180deg,var(--c-bg-2),var(--c-bg));
  border-top:1px solid var(--c-border);
  font-size:var(--fz-sm);color:var(--c-text-3);
}
.site-footer .footer-brand{margin-bottom:var(--s-4)}
.site-footer .footer-brand img{height:48px;width:auto}
.site-footer .grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:var(--s-8);margin-bottom:var(--s-10)}
.site-footer h5{font-family:"Noto Sans TC",sans-serif;font-size:var(--fz-sm);font-weight:600;color:var(--c-text);text-transform:uppercase;letter-spacing:.1em;margin-bottom:var(--s-4)}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--s-2)}
.site-footer a:hover{color:var(--c-gold)}
.site-footer .legal{
  border-top:1px solid var(--c-border);padding-top:var(--s-5);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s-4);
  font-size:var(--fz-xs);
}
.site-footer .age-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border:2px solid var(--c-red-2);border-radius:50%;
  color:var(--c-red-2);font-weight:800;font-size:.78rem;letter-spacing:-.5px;
  margin-right:var(--s-2);
}

/* --- Responsibility banner --------------------------------- */
.responsibility{
  background:linear-gradient(135deg,rgba(230,57,70,.08),rgba(255,205,0,.04));
  border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:var(--s-6);display:flex;gap:var(--s-5);align-items:flex-start;
}
.responsibility .icon{flex:0 0 auto;width:48px;height:48px;border-radius:50%;background:rgba(230,57,70,.14);color:var(--c-red-2);display:grid;place-items:center;font-size:1.5rem}
.responsibility h4{font-size:var(--fz-lg);margin-bottom:var(--s-1)}
.responsibility p{font-size:var(--fz-sm);margin:0}

/* --- Article (legal pages) ---------------------------------- */
.article{max-width:var(--container-narrow);margin-inline:auto;padding-inline:var(--s-5);padding-block:var(--s-12)}
.article h1{margin-bottom:var(--s-6)}
.article h2{font-size:var(--fz-2xl);margin-top:var(--s-10);margin-bottom:var(--s-4);padding-bottom:var(--s-2);border-bottom:1px solid var(--c-border)}
.article h3{font-size:var(--fz-xl);margin-top:var(--s-6);margin-bottom:var(--s-3)}
.article p{margin-bottom:var(--s-4);max-width:none}
.article ul,.article ol{padding-left:1.5em;margin-bottom:var(--s-4);color:var(--c-text-2)}
.article li{margin-bottom:var(--s-2)}
.article a{color:var(--c-gold);border-bottom:1px dashed rgba(255,205,0,.4)}
.article a:hover{border-bottom-style:solid}
.article .toc{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:var(--s-5);margin-bottom:var(--s-8);
}
.article .toc h4{margin-bottom:var(--s-3);font-family:"Noto Sans TC",sans-serif;font-size:var(--fz-sm);text-transform:uppercase;letter-spacing:.1em;color:var(--c-text-3)}
.article .toc ol{padding-left:1.2em;margin:0;font-size:var(--fz-sm)}
.article .updated{color:var(--c-text-3);font-size:var(--fz-sm);margin-bottom:var(--s-8)}

/* --- Breadcrumb --------------------------------------------- */
.breadcrumb{font-size:var(--fz-xs);color:var(--c-text-3);padding-block:var(--s-4)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:var(--s-2);list-style:none;padding:0;margin:0}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:var(--s-2);color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-gold)}

/* --- Age gate ----------------------------------------------- */
.age-gate{
  position:fixed;inset:0;z-index:1000;
  background:rgba(10,10,12,.96);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:none;align-items:center;justify-content:center;padding:var(--s-5);
}
.age-gate[data-open="true"]{display:flex}
.age-gate .panel{
  max-width:480px;width:100%;background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-lg);padding:var(--s-10) var(--s-8);text-align:center;
}
.age-gate .panel img{margin:0 auto var(--s-5);height:80px;width:auto}
.age-gate .seal{
  width:84px;height:84px;border:3px solid var(--c-red-2);border-radius:50%;
  display:grid;place-items:center;margin:0 auto var(--s-5);
  color:var(--c-red-2);font-weight:800;font-size:1.4rem;letter-spacing:-1px;
}
.age-gate h2{font-size:var(--fz-2xl);margin-bottom:var(--s-3)}
.age-gate p{font-size:var(--fz-sm);margin-bottom:var(--s-6);margin-inline:auto}
.age-gate .row{display:flex;gap:var(--s-3);justify-content:center;flex-wrap:wrap}

/* --- Floating chat button ---------------------------------- */
.float-chat{
  position:fixed;right:20px;bottom:20px;z-index:90;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
}
.float-chat .btn-line{
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,#06c755 0%,#04a847 100%);
  color:#fff;font-weight:600;font-size:var(--fz-sm);
  box-shadow:0 8px 24px rgba(6,199,85,.4),0 0 0 4px rgba(6,199,85,.15);
  text-decoration:none;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
  animation:float-pulse 2.4s ease-in-out infinite;
}
.float-chat .btn-line:hover{transform:translateY(-2px) scale(1.04);box-shadow:0 12px 32px rgba(6,199,85,.55),0 0 0 6px rgba(6,199,85,.18);color:#fff}
.float-chat .btn-line svg{width:22px;height:22px;flex-shrink:0}
@keyframes float-pulse{0%,100%{box-shadow:0 8px 24px rgba(6,199,85,.4),0 0 0 4px rgba(6,199,85,.15)}50%{box-shadow:0 8px 28px rgba(6,199,85,.55),0 0 0 12px rgba(6,199,85,.05)}}
@media (max-width:600px){
  .float-chat{right:14px;bottom:14px}
  .float-chat .btn-line{padding:11px 14px;font-size:var(--fz-xs)}
  .float-chat .btn-line .text{display:none}
}

/* (footer social-row removed at user request) */

/* --- Utilities ---------------------------------------------- */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.text-center{text-align:center}
.mt-auto{margin-top:auto}
[hidden]{display:none!important}

/* --- Reduced motion ----------------------------------------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* --- Print --------------------------------------------------- */
@media print{
  .site-header,.site-footer,.age-gate,.nav-toggle{display:none!important}
  body{background:#fff;color:#000}
  .article{max-width:none;padding:0}
}