/* MPO39 — 红黑梯 ladder cards hero + Tangga Gamble 特色板块. 梯夜蓝黑 #171726 × 红黑牌红 #E63946 × 辅 #F2C94C */
:root{
  --bg:#171726;--panel:#1F1F33;--panel2:#262640;--text:#F2F2F7;--muted:#A7A7C2;
  --red:#E63946;--red-deep:#A3202C;--gold:#F2C94C;--gold-soft:#8F7930;--ink:#0D0D18;
  --glow:0 0 12px rgba(230,57,70,.4),0 0 26px rgba(230,57,70,.18);
  --grad-panel:linear-gradient(150deg,#262640 0%,#171726 100%);
  --font-h:'Gloock',serif;--font-b:'Baskervville',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.7;font-size:16px}
img,svg{max-width:100%;vertical-align:middle}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 16px}
.container.narrow{max-width:840px}
.center{text-align:center}
.site-header{position:sticky;top:0;z-index:50;background:rgba(23,23,38,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(230,57,70,.32)}
.header-in{display:flex;align-items:center;gap:14px;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-h);font-weight:400;font-size:1.12rem;color:var(--text);white-space:nowrap;letter-spacing:.04em}
.brand:hover{text-decoration:none}
.nav-desktop{display:none;margin-left:auto;gap:18px}
.nav-desktop a{color:var(--muted);font-weight:400;font-size:.98rem}
.nav-desktop a:hover{color:var(--red);text-decoration:none}
.header-cta{display:flex;gap:8px;margin-left:auto}
.nav-desktop+.header-cta{margin-left:0}
.btn{display:inline-block;padding:10px 20px;border-radius:10px;font-family:var(--font-b);font-weight:700;font-size:.92rem;cursor:pointer;border:1px solid transparent;transition:transform .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#E63946,#B02836);color:#FFF2F3;box-shadow:var(--glow)}
.btn-secondary{background:transparent;color:var(--gold);border-color:rgba(242,201,76,.55)}
.btn-block{display:block;width:100%;text-align:center}
.pulse{animation:pulse-glow 2s infinite}
@keyframes pulse-glow{0%,100%{box-shadow:0 0 8px rgba(230,57,70,.4)}50%{box-shadow:0 0 22px rgba(230,57,70,.85)}}
.nav-toggle{display:none}
.burger{display:flex;flex-direction:column;gap:4px;cursor:pointer;padding:6px;margin-left:4px}
.burger span{width:22px;height:2px;background:var(--red);border-radius:2px}
.m-nav{display:none;background:var(--panel);border-bottom:1px solid rgba(230,57,70,.3)}
.m-nav-group{padding:10px 16px}
.m-nav-group h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--red);margin-bottom:6px;font-weight:700}
.m-nav-group a{display:block;padding:6px 0;color:var(--text)}
.nav-toggle:checked~.m-nav{display:block}
/* 红黑梯 hero（ladder cards，纯 CSS） */
.ladder-hero{padding:44px 0 6px;background:radial-gradient(60% 70% at 50% 0%,rgba(230,57,70,.13) 0%,rgba(23,23,38,0) 70%)}
.ladder-head{text-align:center}
.ladder-head h1{font-family:var(--font-h);font-weight:400;font-size:clamp(2.2rem,6.5vw,3.7rem);letter-spacing:.10em;text-shadow:0 2px 0 #A3202C,0 0 26px rgba(230,57,70,.4)}
.hero-sub{max-width:640px;margin:12px auto 20px;color:var(--muted)}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.tangga{display:flex;flex-direction:column;gap:7px;max-width:520px;margin:28px auto 0}
.rung{display:flex;align-items:center;gap:12px}
.r1{padding-left:0}.r2{padding-left:12%}.r3{padding-left:24%}.r4{padding-left:36%}.r5{padding-left:48%}
.pcard{width:38px;height:52px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;flex:0 0 auto}
.c-red{background:linear-gradient(160deg,#E63946,#A3202C);color:#FFF2F3;box-shadow:0 4px 14px rgba(230,57,70,.35)}
.c-blk{background:linear-gradient(160deg,#30304E,#171730);color:#E9E9F4;border:1px solid rgba(242,201,76,.45);box-shadow:0 4px 14px rgba(13,13,24,.6)}
.mult{display:inline-flex;align-items:center;justify-content:center;min-width:58px;padding:2px 12px;border-radius:99px;font-weight:700;font-size:.92rem;color:var(--gold);border:1px solid rgba(242,201,76,.5);background:rgba(23,23,38,.6)}
.r1 .pcard{animation:rung-light 5s infinite}
.r2 .pcard{animation:rung-light 5s .35s infinite}
.r3 .pcard{animation:rung-light 5s .7s infinite}
.r4 .pcard{animation:rung-light 5s 1.05s infinite}
.r5 .pcard{animation:rung-light 5s 1.4s infinite}
@keyframes rung-light{0%,10%{box-shadow:0 0 0 2px rgba(242,201,76,.95),0 0 22px rgba(242,201,76,.5);transform:translateY(-3px)}22%,100%{transform:none;box-shadow:0 4px 14px rgba(230,57,70,.25)}}
.tangga-base{margin-top:8px;height:14px;border-radius:99px;background:repeating-linear-gradient(90deg,#2E2E4A 0 26px,#1F1F33 26px 38px);box-shadow:0 4px 0 #0D0D18;position:relative}
.base-tag{position:absolute;left:2px;top:-26px;font-size:.68rem;letter-spacing:.16em;color:var(--gold);font-weight:700}
.ladder-cap{max-width:560px;margin:14px auto 0;color:var(--muted);font-size:.88rem;font-style:italic;text-align:center}
.stage-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:16px 0 4px}
.chip{font-size:.78rem;letter-spacing:.06em;color:var(--red);border:1px solid rgba(230,57,70,.4);border-radius:99px;padding:3px 14px;background:rgba(23,23,38,.6)}
.chip-gold{color:#FFEFC2;border-color:rgba(242,201,76,.45)}
.section{padding:38px 0}
.section-alt{background:rgba(31,31,51,.55)}
.sec-title{font-family:var(--font-h);font-weight:400;font-size:1.5rem;margin-bottom:18px;text-align:center}
.sec-sub{color:var(--muted);text-align:center;max-width:660px;margin:-8px auto 18px;font-size:.92rem}
.grid-2,.grid-3,.grid-4{display:grid;gap:16px;grid-template-columns:1fr;margin-bottom:8px}
.glow-card{display:block;background:var(--grad-panel);border:1px solid rgba(230,57,70,.32);border-radius:14px;padding:18px;color:var(--text);transition:border-color .15s,box-shadow .15s}
.glow-card:hover{border-color:var(--red);box-shadow:var(--glow);text-decoration:none}
.glow-card h3{font-size:1.05rem;margin-bottom:6px;color:var(--gold)}
.glow-card p{color:var(--muted);font-size:.92rem}
.nc-icon{font-size:1.5rem;display:block;margin-bottom:8px}
/* Tangga Gamble 翻倍梯特色板块 */
.tg-grid{display:grid;gap:14px;grid-template-columns:1fr;margin-bottom:16px}
.tg-card{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;background:var(--grad-panel);border:1px solid rgba(230,57,70,.35);border-radius:14px;padding:16px 12px}
.tg-step{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:700}
.tg-mult{font-family:var(--font-h);font-size:2.1rem;line-height:1;color:var(--red);text-shadow:0 0 18px rgba(230,57,70,.45)}
.tg-val{font-size:.95rem;color:var(--text)}
.tg-odds{font-size:.8rem;color:var(--gold);border-top:1px dashed rgba(242,201,76,.35);padding-top:6px;width:100%}
.tg-mini .tg-card{padding:12px 8px}
.tg-mini .tg-mult{font-size:1.6rem}
.tg-mini .tg-val{font-size:.85rem}
.tg-banner{border:1px solid rgba(242,201,76,.4);border-left:4px solid var(--gold);border-radius:0 12px 12px 0;background:rgba(13,13,24,.55);padding:14px 18px;color:var(--muted);font-size:.92rem}
.tg-banner strong{color:var(--gold)}
.trust-zone p{max-width:640px;margin:10px auto;color:var(--muted)}
.trust-zone .pill-18{margin:6px 0 12px}
.prose .note{color:var(--muted);font-size:.9rem}
.page-head{padding-top:22px}
.page-head h1,.prose h1{font-family:var(--font-h);font-weight:400;font-size:clamp(1.5rem,4.5vw,2.2rem);line-height:1.3}
.prose h2{font-family:var(--font-h);font-weight:400;font-size:1.35rem;margin:26px 0 10px;line-height:1.35;color:#FFF2F3}
.prose h3{font-size:1.08rem;font-weight:700;margin:20px 0 8px;color:var(--red)}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px 22px}
.prose li{margin-bottom:6px}
.steps li{margin-bottom:10px}
.steps li strong{color:var(--gold)}
.quick-form{display:grid;gap:8px;max-width:360px;margin:12px 0}
.quick-form label{font-size:.85rem;color:var(--muted)}
.quick-form input{background:#171726;border:1px solid rgba(230,57,70,.4);border-radius:8px;padding:10px 12px;color:var(--text);font-family:var(--font-b)}
.quick-form input:focus{outline:none;border-color:var(--red)}
.kamus-grid{display:grid;gap:10px;margin:14px 0}
.kamus-item{background:var(--grad-panel);border:1px solid rgba(230,57,70,.3);border-radius:10px;overflow:hidden}
.kamus-item summary{cursor:pointer;padding:13px 16px;font-weight:700;list-style:none;position:relative}
.kamus-item summary::-webkit-details-marker{display:none}
.kamus-item summary::after{content:"+";position:absolute;right:16px;color:var(--red)}
.kamus-item[open] summary::after{content:"\2212"}
.kamus-item p{padding:0 16px 14px;color:var(--muted);font-size:.95rem}
.err-wrap{padding:70px 16px}
.err-code{font-family:var(--font-h);font-size:5rem;color:var(--red);text-shadow:var(--glow)}
.err-wrap .btn{margin:18px 0}
.crumbs{padding:12px 0 0;font-size:.82rem;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"\203A";margin-right:6px;color:var(--red)}
.site-footer{background:var(--panel);border-top:1px solid rgba(230,57,70,.32);padding:36px 0 92px;margin-top:30px}
.foot-grid{display:grid;gap:24px;grid-template-columns:1fr}
.foot-brand p{color:var(--muted);font-size:.9rem;margin:10px 0}
.foot-col h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--red);margin-bottom:8px;font-weight:700}
.foot-col a{display:block;color:var(--muted);padding:3px 0;font-size:.92rem}
.foot-col a:hover{color:var(--gold);text-decoration:none}
.pill-18{display:inline-block;border:1px solid var(--gold);color:var(--gold);border-radius:999px;padding:2px 12px;font-weight:700;font-size:.85rem}
.foot-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(230,57,70,.22);color:var(--muted);font-size:.85rem}
.float-cta{position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(23,23,38,.92);backdrop-filter:blur(8px);border-top:1px solid rgba(230,57,70,.4)}
@media (max-width:767px){
  .header-in{gap:8px}
  .brand{font-size:.98rem}
  .brand .logo-mark{width:26px;height:26px}
  .header-cta{gap:6px}
  .header-cta .btn{padding:8px 13px;font-size:.85rem}
  .burger{padding:5px}
  .pcard{width:32px;height:44px;font-size:1.1rem}
  .mult{min-width:50px;font-size:.85rem;padding:2px 10px}
}
@media (min-width:768px){
  .grid-2{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .tg-grid{grid-template-columns:repeat(3,1fr)}
  .tg-mini{grid-template-columns:repeat(5,1fr)}
  .foot-grid{grid-template-columns:2fr 1fr 1.4fr 1fr}
  .nav-desktop{display:flex}
  .header-cta{margin-left:0}
  .burger{display:none}
  .m-nav{display:none!important}
  .float-cta{left:auto;right:18px;bottom:18px;border-radius:12px;border:1px solid rgba(230,57,70,.5)}
  .float-cta .btn-block{width:auto}
}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}.tg-grid{grid-template-columns:repeat(5,1fr)}}
@media (prefers-reduced-motion:reduce){.pulse,.pcard{animation:none}}

/* ===== Float CTA Jackpot v2 (2026-09-13): 底部居中 + 闪烁 ===== */
.float-cta{left:50%;right:auto;transform:translateX(-50%);width:100%;max-width:600px;margin:0;display:block}
.float-inner{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.jackpot-tag{display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:1rem;letter-spacing:.02em;color:#FFE066;text-shadow:0 0 10px rgba(255,224,102,.6)}
.jackpot-blink{animation:jackpot-blink 1.1s ease-in-out infinite}
@keyframes jackpot-blink{0%,100%{opacity:1;text-shadow:0 0 10px rgba(255,224,102,.85),0 0 22px rgba(255,224,102,.45)}50%{opacity:.5;text-shadow:0 0 4px rgba(255,224,102,.3)}}
.masuk-btn{position:relative;overflow:hidden;white-space:nowrap;flex:0 0 auto;font-weight:800;letter-spacing:.02em;animation:masuk-glow 1.4s ease-in-out infinite}
.masuk-btn::after{content:"";position:absolute;top:0;left:-80%;width:55%;height:100%;background:linear-gradient(105deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.55) 50%,rgba(255,255,255,0) 100%);transform:skewX(-20deg);animation:masuk-shine 1.8s linear infinite}
@keyframes masuk-shine{0%{left:-80%}55%,100%{left:130%}}
@keyframes masuk-glow{0%,100%{box-shadow:0 0 8px rgba(255,215,80,.55)}50%{box-shadow:0 0 24px rgba(255,215,80,.95),0 0 40px rgba(255,180,40,.5)}}
.jp-spark{display:inline-block;animation:spark-twinkle 1s ease-in-out infinite}
@keyframes spark-twinkle{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.55) rotate(18deg);opacity:.45}}
@media (prefers-reduced-motion:reduce){.jackpot-blink,.masuk-btn,.masuk-btn::after,.jp-spark{animation:none}}