/* ==========================================================================
   翻倍猫 · DOUBLE CAT — manga / lucky-cat theme
   ========================================================================== */

/* ---------- 1. tokens & base ---------------------------------------------- */
:root{
  --bg:#0b0607; --bg2:#140a0b; --card:#170d0e; --card2:#1f1112;
  --red:#e3192b; --red2:#ff3b3b; --blood:#8e0d18;
  --gold:#ffc61a; --bone:#f6eedf; --ink:#0b0607;
  --mute:#b9a7a3; --edge:#3a1b1e;
  --cut:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--bone);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.5;
  background-image:
    radial-gradient(1200px 600px at 85% -10%,rgba(227,25,43,.35),transparent 60%),
    radial-gradient(900px 500px at -10% 30%,rgba(142,13,24,.35),transparent 60%),
    radial-gradient(rgba(255,255,255,.06) 1px,transparent 1.5px);
  background-size:auto,auto,14px 14px;background-attachment:fixed;overflow-x:hidden;
}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.en-font,.num{font-family:"Anton","Bebas Neue",Impact,sans-serif;letter-spacing:.5px}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 2. buttons ----------------------------------------------------- */
.btn{
  white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;
  padding:13px 26px;font-weight:900;font-size:17px;cursor:pointer;text-decoration:none;font-family:inherit;
  color:#fff;background:var(--red);
  clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%);
  box-shadow:inset 0 -4px 0 rgba(0,0,0,.35);
  transition:transform .08s,filter .1s;letter-spacing:.5px;
}
.btn:hover{filter:brightness(1.12);transform:translateY(-1px)}
.btn:active{transform:translateY(2px)}
.btn.pink{background:linear-gradient(180deg,var(--red2),var(--red));color:#fff;text-shadow:2px 2px 0 var(--blood)}
.btn.gold,.btn.mint{background:var(--gold);color:var(--ink);text-shadow:none}
.btn.ghost{background:#fff;color:var(--ink)}
.btn.dark{background:#000;color:var(--bone);box-shadow:inset 0 0 0 2px var(--bone)}
.btn[disabled]{opacity:.45;cursor:not-allowed;filter:grayscale(.4)}
.btn.sm{padding:9px 16px;font-size:14px}

/* ---------- 3. nav --------------------------------------------------------- */
nav{position:sticky;top:0;z-index:30;background:rgba(11,6,7,.92);backdrop-filter:blur(6px);border-bottom:3px solid var(--red)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:"ZCOOL QingKe HuangYou","Noto Sans SC",sans-serif;font-size:28px;color:#fff;white-space:nowrap}
.logo img{width:40px;height:40px}
.logo small{font-family:"Anton",sans-serif;font-size:12px;color:var(--gold);letter-spacing:1.5px;display:block;line-height:1;margin-top:2px}
.navlinks{display:flex;gap:18px;align-items:center;font-weight:700}
.navlinks a{text-decoration:none;color:var(--bone);opacity:.85}
.navlinks a:hover{opacity:1;color:var(--gold)}
.lang{display:flex;border:2px solid var(--bone);overflow:hidden;transform:skewX(-10deg)}
.lang button{border:0;background:transparent;color:var(--bone);padding:5px 11px;font-weight:900;cursor:pointer;font-family:inherit}
.lang button.on{background:var(--bone);color:var(--ink)}
#connect{padding:9px 18px;font-size:15px}
.navx svg{margin-right:4px}
.navtg svg{margin-right:0}
.navtg{display:inline-flex;align-items:center}
@media(max-width:1240px){.navx-t{display:none}.navx svg{margin-right:0}}

/* mobile menu */
.navtoggle{
  display:none;flex-direction:column;align-items:stretch;justify-content:center;gap:5px;width:40px;height:38px;
  padding:0 9px;background:#000;border:2px solid var(--bone);cursor:pointer;
}
.navtoggle span{display:block;width:100%;height:3px;background:var(--bone);transition:transform .2s,opacity .2s}
.navtoggle[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.navtoggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.navtoggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.mobile-menu{
  display:none;position:fixed;left:0;right:0;top:69px;z-index:29;
  background:#0b0607;border-bottom:3px solid var(--red);
  padding:10px 20px 18px;flex-direction:column;box-shadow:0 12px 24px rgba(0,0,0,.55);
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  display:block;padding:13px 4px;text-decoration:none;color:var(--bone);font-weight:800;font-size:17px;
  border-bottom:1px dashed #3a1b1e;
}
.mobile-menu a:last-child{border-bottom:0;color:var(--gold)}
.mobile-menu a:hover{color:var(--gold)}
.mobile-back{display:none}
@media(max-width:900px){
  .navlinks a{display:none}
  .navlinks a.mobile-back{display:inline-flex;align-items:center;font-size:14px;opacity:.9}
  .navtoggle{display:flex}
}
@media(min-width:901px){.mobile-menu{display:none !important}}
@media(max-width:420px){
  .logo{font-size:22px}.logo img{width:32px;height:32px}.logo small{display:none}
  #connect{padding:8px 12px;font-size:13px}.lang button{padding:4px 8px}.navlinks{gap:10px}
  .navtoggle{width:36px;padding:0 7px}
}

/* ---------- 4. ticker ------------------------------------------------------ */
.ticker{background:var(--gold);color:var(--ink);font-weight:900;overflow:hidden;white-space:nowrap;border-bottom:3px solid #000}
.ticker div{display:inline-block;padding:7px 0;animation:tick 40s linear infinite}
.ticker span{margin:0 18px}
.ticker b{color:var(--red)}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 5. hero -------------------------------------------------------- */
.hero{padding:38px 0 24px;position:relative}
.hero-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:10px;align-items:center}
.tag{display:inline-block;background:var(--red);color:#fff;font-weight:900;padding:6px 16px;transform:skewX(-10deg);box-shadow:4px 4px 0 #000;letter-spacing:1px}
.tag > span{display:inline-block;transform:skewX(10deg)}
h1{
  font-family:"Ma Shan Zheng","ZCOOL QingKe HuangYou",serif;font-weight:400;
  font-size:clamp(84px,13vw,170px);line-height:.95;margin:18px 0 6px;color:#fff;
  text-shadow:5px 5px 0 var(--red),10px 10px 0 #000;letter-spacing:4px;
}
h1 .slash{color:var(--red);text-shadow:5px 5px 0 #fff,10px 10px 0 #000}
.romaji{font-family:"Anton",sans-serif;color:var(--gold);letter-spacing:4px;font-size:15px;margin:0 0 16px}
.sub{font-size:clamp(18px,2.2vw,23px);font-weight:900;margin:0 0 12px;color:#fff}
.sub2{font-size:clamp(14px,1.6vw,17px);font-weight:700;margin:0 0 20px;padding:10px 14px;background:rgba(227,25,43,.14);border-left:5px solid var(--red);color:var(--bone);max-width:560px}
.hero-art{position:relative;max-width:640px;justify-self:center}
.hero-art::before{
  content:"";position:absolute;inset:2% 0 4% 4%;
  background:repeating-conic-gradient(from 0deg at 55% 50%,rgba(227,25,43,.55) 0 6deg,transparent 6deg 14deg);
  -webkit-mask:radial-gradient(circle at 55% 50%,#000 22%,transparent 68%);
  mask:radial-gradient(circle at 55% 50%,#000 22%,transparent 68%);z-index:0;
}
.hero-art img{position:relative;z-index:1;width:100%;height:auto;filter:drop-shadow(8px 10px 0 rgba(0,0,0,.65))}
.ko{position:absolute;z-index:2;left:2%;top:2%;font-family:"Anton",sans-serif;font-size:clamp(40px,6vw,76px);color:var(--gold);transform:rotate(-10deg);text-shadow:3px 3px 0 var(--red),6px 6px 0 #000;letter-spacing:0}
.cta{display:flex;gap:14px;flex-wrap:wrap}

/* countdown */
.cd{display:flex;gap:8px;align-items:stretch;margin:0 0 22px;flex-wrap:wrap}
.cd .lbl{font-weight:900;color:var(--gold);display:flex;align-items:center;margin-right:6px;font-size:15px}
.cd .u{background:#000;border:2px solid var(--red);min-width:64px;text-align:center;padding:4px 6px 2px;clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px)}
.cd .u b{display:block;font-family:"Anton",sans-serif;font-size:34px;line-height:1.05;color:#fff}
.cd .u i{font-style:normal;font-size:11px;color:var(--mute);font-weight:700}
.cd.live .u{border-color:var(--gold)}

/* price board */
.board{
  position:relative;background:linear-gradient(180deg,#1b0d0f,#100809);border:3px solid #000;
  outline:2px solid var(--red);outline-offset:-8px;padding:24px 20px 20px;margin:26px auto 22px;
  box-shadow:10px 10px 0 rgba(0,0,0,.6);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.board .lbl{font-weight:900;font-size:14px;letter-spacing:1.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;color:var(--gold)}
.price-row{display:flex;align-items:baseline;justify-content:center;gap:14px;flex-wrap:wrap;margin:14px 0 2px}
.price{font-family:"Anton","Noto Sans SC",sans-serif;font-size:clamp(38px,5.2vw,58px);line-height:1.05;color:#fff;letter-spacing:1px;text-shadow:4px 4px 0 var(--red)}
.price small{font-size:.38em;color:var(--gold);letter-spacing:2px;margin-left:8px;text-shadow:none;font-family:"Anton",sans-serif}
.mult{font-family:"Anton",sans-serif;font-size:clamp(20px,2.8vw,32px);color:var(--gold);text-shadow:2px 2px 0 #000;letter-spacing:1px}
.paws{display:flex;flex-wrap:wrap;justify-content:center;gap:5px;margin:14px 0 12px}
.paw{width:28px;height:34px;display:grid;place-items:center;background:#1f1112;border:2px solid #4a2a2d;transform:skewX(-8deg);box-shadow:2px 2px 0 rgba(0,0,0,.55);transition:all .4s}
.paw svg{width:18px;height:18px;fill:#6b4247;transition:fill .4s}
.paw.on{background:var(--bone);border-color:#000;box-shadow:3px 3px 0 var(--red)}
.paw.on svg{fill:var(--red)}
.paw.next{border-color:var(--gold);border-style:dashed}
.paw.pop{animation:pawpop .45s ease-out}
@keyframes pawpop{0%{transform:scale(.4) skewX(-8deg)}60%{transform:scale(1.15) skewX(-8deg)}100%{transform:scale(1) skewX(-8deg)}}
.paws-meta{display:flex;justify-content:center;gap:10px 26px;flex-wrap:wrap;font-weight:700;color:var(--bone)}
.paws-meta b{font-family:"Anton",sans-serif;font-size:24px;color:#fff;margin-left:4px}
.paws-meta div:nth-child(5) b{color:var(--gold)}
.board-note{text-align:center;margin:10px 0 0;font-size:12px;line-height:1.5;color:var(--mute)}
@media(max-width:640px){
  .paw{width:18px;height:24px;box-shadow:none}
  .paw svg{width:12px;height:12px}
  .paws{gap:3px}
  .price{font-size:34px}
  .paws-meta b{font-size:20px}
  .board-note{font-size:11px}
}
.livebar{margin:0 auto 18px;background:var(--gold);color:var(--ink);padding:10px 14px;font-weight:900;text-align:center;clip-path:polygon(10px 0,100% 0,calc(100% - 10px) 100%,0 100%)}
.prelaunchbar{margin:0 auto 18px;background:var(--red);color:#fff;border:2px solid #000;padding:11px 14px;font-weight:900;text-align:center;box-shadow:5px 5px 0 #000}

/* ---------- 6. sections & cards ------------------------------------------- */
section{padding:44px 0;scroll-margin-top:80px}
.round{display:inline-block;font-family:"Anton",sans-serif;color:#000;background:var(--gold);padding:2px 12px;letter-spacing:2px;font-size:14px;transform:skewX(-12deg);margin-bottom:8px}
.round > *{display:inline-block;transform:skewX(12deg)}
h2{font-family:"ZCOOL QingKe HuangYou","Noto Sans SC",sans-serif;font-weight:400;font-size:clamp(34px,4.8vw,54px);margin:0 0 8px;color:#fff;line-height:1.05;text-shadow:3px 3px 0 var(--red)}
h3{font-weight:900}
.lead2{font-size:17px;margin:0 0 24px;max-width:780px;color:var(--bone)}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:1fr 1fr}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.g2,.g3{grid-template-columns:1fr}}
.card{
  position:relative;background:var(--card);border:2px solid var(--edge);padding:22px;
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
}
.card::after{content:"";position:absolute;left:0;top:0;width:46px;height:4px;background:var(--red)}
.card h3{margin:0 0 8px;font-size:20px;color:#fff}
.card p{margin:0;line-height:1.65}
.card.risk{margin-top:18px;border-color:var(--red);background:rgba(227,25,43,.08)}
.card.risk p{font-size:14px;line-height:1.7}
.chip{display:inline-block;font-weight:900;font-size:13px;padding:3px 12px;margin-bottom:10px;color:var(--ink);background:var(--gold);transform:skewX(-10deg)}
.stat{text-align:left}
.stat b{display:block;font-family:"Anton","Noto Sans SC",sans-serif;font-size:34px;color:#fff;line-height:1.2;margin:4px 0 2px}
.stat span{font-weight:700;font-size:14px;color:var(--mute)}
.stat > span:nth-child(-n+2){color:var(--gold)}
@media(max-width:640px){
  .g4{grid-template-columns:1fr 1fr;gap:12px}
  .stat{padding:16px}.stat b{font-size:26px}.stat span{font-size:12px}
}

/* ---------- 7. mint ------------------------------------------------------- */
.mintbox{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
@media(max-width:860px){.mintbox{grid-template-columns:1fr}}
.prog{height:28px;background:#000;border:2px solid var(--bone);position:relative;margin:14px 0 8px;transform:skewX(-10deg);overflow:hidden}
.prog i{position:absolute;inset:0 auto 0 0;background:repeating-linear-gradient(45deg,var(--red) 0 12px,var(--red2) 12px 24px);width:0;transition:width .6s}
.prog .mark{position:absolute;top:0;bottom:0;width:3px;background:var(--gold)}
.prog-l{display:flex;justify-content:space-between;font-weight:700;font-size:13px;gap:8px;color:var(--mute)}
.qty{display:flex;align-items:center;gap:10px;margin:14px 0;flex-wrap:wrap}
.qty button{width:44px;height:44px;border:2px solid var(--bone);background:#000;color:#fff;font-size:22px;font-weight:900;cursor:pointer}
.qty input{width:70px;height:44px;border:2px solid var(--bone);background:#000;color:#fff;text-align:center;font-size:22px;font-family:"Anton",sans-serif}
.row{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px dashed #4a2a2d;font-weight:500}
.row b{color:#fff;text-align:right}
.row > span:first-child{flex-shrink:0}
.row:last-child{border:0}
.note{font-size:14px;margin-top:10px;color:var(--mute);display:block}
.msg{margin-top:12px;font-weight:900;min-height:22px;color:var(--gold)}
input.txt{width:100%;border:2px solid #4a2a2d;background:#0b0607;color:#fff;padding:12px;font-family:inherit;font-size:15px;outline:none}
input.txt:focus{border-color:var(--red)}

/* ---------- 8. tables & callout ------------------------------------------ */
table{width:100%;border-collapse:collapse;background:var(--card);border:2px solid var(--edge)}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid #2e1719;font-weight:500}
th{background:var(--red);color:#fff;font-weight:900}
tr:last-child td{border-bottom:0}
tr.cur td{background:var(--gold);color:var(--ink);font-weight:900}
.big{font-family:"Anton","Noto Sans SC",sans-serif;font-size:18px}
td.tbl-price{font-family:"Anton","Noto Sans SC",sans-serif;color:var(--gold);white-space:nowrap;letter-spacing:.3px}
tr.cur td.tbl-price{color:var(--ink)}
@media(max-width:480px){th,td{padding:9px 8px;font-size:14px}td.tbl-price{font-size:12.5px}}
.callout{word-break:break-all;background:#000;border:2px solid var(--red);padding:16px 18px;font-weight:900;margin-top:18px;line-height:1.6;color:#fff;box-shadow:6px 6px 0 var(--blood)}

/* FAQ */
.faq-grid{display:grid;gap:12px;max-width:920px}
details.faq{background:var(--card);border:2px solid var(--edge);padding:0 18px;transition:border-color .15s}
details.faq[open]{border-color:var(--red)}
details.faq summary{
  cursor:pointer;list-style:none;padding:15px 34px 15px 0;position:relative;
  font-weight:900;color:#fff;font-size:16px;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-family:"Anton",sans-serif;font-size:24px;color:var(--gold);line-height:1;
}
details.faq[open] summary::after{content:"−"}
details.faq p{margin:0 0 16px;color:var(--bone);font-size:15px;line-height:1.75}
.callout .num{color:var(--gold)}
.steps{counter-reset:s}
.steps .card{padding-top:58px}
.steps .card::before{counter-increment:s;content:counter(s);position:absolute;top:10px;left:18px;font-family:"Anton",sans-serif;font-size:40px;color:var(--red);line-height:1}
.addr{font-family:ui-monospace,Menlo,monospace,"Noto Sans SC";font-size:13px;word-break:break-all;color:#fff}
.x{font-family:"Noto Sans SC",sans-serif;font-weight:900;margin:0 2px}

/* ---------- 9. footer / dialog / tasks ----------------------------------- */
footer{border-top:3px solid var(--red);padding:26px 0 40px;margin-top:30px;font-weight:500;background:#000}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
footer a{color:var(--gold);text-decoration:none}
.demo-note{display:block;width:100%;margin-top:14px;padding-top:12px;border-top:1px dashed #3a1b1e;font-size:12px;color:#7f6f6c;text-align:center}
#toTop{
  position:fixed;right:18px;bottom:18px;z-index:40;width:46px;height:46px;display:none;
  place-items:center;background:var(--red);color:#fff;border:2px solid #000;cursor:pointer;
  font-family:"Anton",sans-serif;font-size:22px;box-shadow:3px 3px 0 #000;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
#toTop.show{display:grid}
#toTop:hover{filter:brightness(1.12)}
@media(max-width:480px){#toTop{right:12px;bottom:14px;width:42px;height:42px}}

/* 404 */
.err-wrap{min-height:64vh;display:grid;place-items:center;text-align:center;padding:70px 20px}
.err-code{font-family:"Anton",sans-serif;font-size:clamp(100px,22vw,200px);line-height:.9;color:#fff;text-shadow:8px 8px 0 var(--red),16px 16px 0 #000}
.err-title{font-family:"ZCOOL QingKe HuangYou",sans-serif;font-size:clamp(28px,4vw,42px);color:var(--gold);margin:12px 0 6px}
.err-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}

dialog#wm{background:var(--card);color:var(--bone);border:3px solid var(--red);padding:22px;max-width:390px;width:92vw;box-shadow:10px 10px 0 #000}
dialog#wm::backdrop{background:rgba(0,0,0,.7)}
.wopt{display:flex;width:100%;white-space:normal;text-align:left;gap:10px;justify-content:space-between;align-items:center;margin-top:10px;background:#000;color:#fff;box-shadow:inset 0 0 0 2px var(--bone)}
.wopt em{color:var(--gold);font-style:normal;font-size:13px;white-space:nowrap}
.qrwrap{background:#fff;padding:8px;margin:12px auto;max-width:240px}
.qrwrap svg{width:100%;height:auto;display:block}
.tasks{margin-top:18px;border-top:1px dashed #4a2a2d;padding-top:14px}
.task{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:10px}
.task .txt{flex:1;min-width:160px;margin:0}

/* bilingual: both copies live in the DOM, CSS picks one ------------------ */
[data-en]{display:none}
html[lang=en] [data-zh]{display:none}
html[lang=en] [data-en]{display:revert}

/* ---------- 10. responsive hero / small screens -------------------------- */
@media(max-width:860px){
  .hero{padding-top:20px}
  .hero-grid{grid-template-columns:1fr}
  .hero-art{order:-1;max-width:520px;margin:0 auto -10px}
  .hero-copy{text-align:center}
  .hero-copy .cd,.hero-copy .cta{justify-content:center}
  .sub2{margin-left:auto;margin-right:auto;text-align:left}
}
@media(max-width:480px){
  .cd .lbl{flex-basis:100%;justify-content:center;margin:0 0 2px}
  .hero-art{max-width:380px}
  .task .txt{flex-basis:100%;order:2}
  .task .btn.gold{order:3}
  .cd .u{min-width:54px}.cd .u b{font-size:28px}
  .btn{font-size:16px;padding:12px 20px}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .ticker div{animation:none}
  .paw,.prog i,.btn{transition:none}
  .paw.pop{animation:none}
}

/* ==========================================================================
   11. whitepaper page
   ========================================================================== */
.wp section{padding:10px 0}
.wp .card p{font-size:16.5px;line-height:1.8}
.wp .card h2{font-size:clamp(26px,3.4vw,34px);margin-bottom:10px}
.wp-hero{padding:34px 0 18px;display:flex;align-items:center;gap:22px}
.wp-hero img{width:120px;height:120px;flex-shrink:0}
.wp-hero h1{font-size:clamp(64px,10vw,110px);margin:6px 0 0}
.wp-hero .sub{margin:4px 0 0}
.ladder{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px;margin-top:14px}
.ladder div{background:#000;border:2px solid var(--edge);padding:8px 10px;font-weight:900}
.ladder b{font-family:"Anton","Noto Sans SC",sans-serif;color:var(--gold);font-size:20px;display:block}
@media(max-width:560px){.wp-hero{flex-direction:column;text-align:center}.wp-hero img{width:96px;height:96px}}