:root{--bg:#0a0f24;--card:#111936;--text:#f1f5f9;--muted:#94a3b8;--accent:#22d3ee;--accent2:#a78bfa;--btn-text:#04111f;--line:#1f2a52;--err:#f87171;box-sizing:border-box}
@media (prefers-color-scheme:light){:root{--bg:#f6f8ff;--card:#fff;--text:#0f172a;--muted:#475569;--accent:#0891b2;--accent2:#7c3aed;--btn-text:#fff;--line:#dbe3f5;--err:#dc2626}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.6}
a{color:var(--accent)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:14px;padding-bottom:14px}
.logo{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--text)}
nav{display:flex;align-items:center}
nav a{margin-left:18px;text-decoration:none;color:var(--muted);font-size:.95rem;transition:color .2s ease}
nav a:hover{color:var(--text)}
.nav-buy{margin-left:20px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:var(--btn-text)!important;font-weight:700;padding:8px 18px;border-radius:10px;font-size:.9rem;letter-spacing:.01em;text-decoration:none;box-shadow:0 4px 14px rgba(34,211,238,.32);transition:transform .2s ease,box-shadow .2s ease;white-space:nowrap;display:inline-block}
.nav-buy:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(34,211,238,.48);color:var(--btn-text)!important}
section{padding:52px 0}
h1{font-size:clamp(2rem,5vw,3.3rem);line-height:1.12;margin:0 0 16px}
h1 span{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:clamp(1.5rem,3.5vw,2rem);margin:0 0 24px;text-align:center}
.lead{color:var(--muted);font-size:1.1rem;max-width:560px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.btn{display:inline-block;background:linear-gradient(90deg,var(--accent),var(--accent2));color:var(--btn-text);font-weight:700;padding:14px 28px;border-radius:12px;text-decoration:none;font-size:1.05rem;border:0;cursor:pointer;font-family:inherit}
.btn.ghost{background:none;color:var(--text);border:1px solid var(--line);margin-left:10px}
.btn.wa{background:#22c55e;color:#04210f}
.stack{position:relative;height:430px}
.stack img{position:absolute;width:62%;border-radius:14px;border:1px solid var(--line);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.stack img:nth-child(1){left:0;top:30px;transform:rotate(-6deg)}
.stack img:nth-child(2){left:19%;top:0;z-index:2}
.stack img:nth-child(3){right:0;top:40px;transform:rotate(6deg)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}
.grid img{width:100%;border-radius:12px;border:1px solid var(--line)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card b{display:block;margin-bottom:6px;color:var(--accent)}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.price{max-width:420px;margin:0 auto;text-align:center;background:var(--card);border:1px solid var(--accent);border-radius:18px;padding:32px}
.amt{font-size:3rem;font-weight:800}
.price ul{list-style:none;padding:0;margin:18px 0 24px;text-align:left;color:var(--muted)}
.price li{padding:5px 0}.price li::before{content:"✓ ";color:var(--accent)}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}details p{color:var(--muted);margin:10px 0 0}
.step{display:flex;gap:14px;margin-bottom:18px}
.step i{flex:none;width:34px;height:34px;border-radius:50%;background:linear-gradient(90deg,var(--accent),var(--accent2));color:var(--btn-text);font-style:normal;font-weight:800;display:grid;place-items:center}
.pay{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.qrbox{background:#fff;border-radius:14px;padding:16px;width:252px;margin:0 auto 14px;display:flex;justify-content:center;min-height:252px;align-items:center}
.center{text-align:center}
label{display:block;font-weight:600;margin:14px 0 6px}
input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:1rem;font-family:inherit}
.err{color:var(--err);min-height:1.4em;margin:8px 0 0;font-size:.92rem}
.note{color:var(--muted);font-size:.92rem}
.doc h2{text-align:left;margin-top:34px}.doc p,.doc li{color:var(--muted)}
footer{text-align:center;color:var(--muted);padding:28px 20px;font-size:.9rem;border-top:1px solid var(--line)}
footer a{color:var(--muted);margin:0 8px}
@media(max-width:760px){.hero,.pay{grid-template-columns:1fr}.stack{height:360px}.btn.ghost{margin:12px 0 0}nav a{margin-left:12px}}
.products{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.cover{padding:26px 20px;min-height:190px;display:flex;flex-direction:column;justify-content:flex-end;gap:6px;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.35)}
.cover .ico{font-size:2.6rem}.cover b{font-size:1.15rem;line-height:1.25}.cover small{opacity:.85;letter-spacing:.08em;font-size:.72rem}
.pbody{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.pbody h3{margin:8px 0 6px;font-size:1.05rem}.pbody p{color:var(--muted);margin:0 0 10px;font-size:.93rem}
.pbody ul{margin:0 0 16px;padding-left:18px;color:var(--muted);font-size:.9rem;flex:1}
.tag{display:inline-block;align-self:flex-start;font-size:.75rem;font-weight:700;color:var(--accent);border:1px solid var(--line);border-radius:99px;padding:2px 10px}
.row{display:flex;justify-content:space-between;align-items:center}.pr{font-size:1.6rem;font-weight:800}
.bundle{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;background:var(--card);border:1px solid var(--accent);border-radius:18px;padding:26px 30px;margin-top:24px}
select{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:1rem;font-family:inherit}
/* ---- v3 enhancements ---- */
.logo{display:flex;align-items:center;gap:10px}
.logo::before{content:"";width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 4px 14px rgba(34,211,238,.35)}
header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px)}
.hero-art{width:100%;height:auto;display:block;filter:drop-shadow(0 20px 40px rgba(0,0,0,.35))}
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;padding:0 0 10px}
.strip div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:.92rem;color:var(--muted)}
.strip b{display:block;color:var(--text);font-size:1.02rem}
.products{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:18px}
.pcard{transition:transform .2s,box-shadow .2s}
.pcard:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(0,0,0,.28)}
.cover{position:relative;padding:14px 16px 16px;min-height:0;gap:6px;justify-content:space-between;overflow:hidden}
.cover::before{content:"";position:absolute;inset:auto 0 0 0;height:62%;background:linear-gradient(to top,rgba(2,6,23,.6),transparent);pointer-events:none}
.cover .art{position:relative;width:100%;height:118px;object-fit:contain}
.cover .ct{position:relative;display:flex;flex-direction:column;gap:3px}
.cover .ct b{font-size:1.02rem;line-height:1.25}
.pcard.feat{flex-direction:row}
.pcard.feat .cover{flex:0 0 44%;justify-content:center}
.pcard.feat .cover .art{height:210px}
.pcard.feat .cover .ct b{font-size:1.25rem}
.pcard.feat .pbody{padding:26px 28px;justify-content:center}
.pcard.feat h3{font-size:1.4rem}
.pcard.feat ul{columns:2;flex:none}
.usd{margin-left:8px;color:var(--muted);font-weight:600}
.bundle{padding:0;overflow:hidden;gap:0;align-items:stretch}
.bimg{width:250px;object-fit:contain;padding:10px}
.btxt{flex:1;padding:22px 26px;min-width:240px}
.bundle>.btn{align-self:center;margin:0 26px 0 0}
/* Image protection: stop dragging, long-press save, and highlight */
img, .coder-img, .art, .bimg, .mark, .peek img, .sumcover img, .sumcover {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.peek img{max-width:100%}
.peek .grid{align-items:stretch}
.peek .grid img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:top center;border-radius:14px;border:1px solid var(--line);display:block;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.peek .grid img:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(34,211,238,.25);border-color:var(--accent)}
@media(max-width:760px){.pcard.feat{flex-direction:column}.pcard.feat .cover{flex:none}.pcard.feat ul{columns:1}.bimg{width:100%;height:150px}.bundle>.btn{margin:0 26px 22px}}
.row .btn{white-space:nowrap;padding:12px 18px;font-size:1rem}
.usd{display:block;margin:0;font-size:.85rem}
.pcard.feat .usd{display:inline;margin-left:8px;font-size:1rem}
/* ---- v4 motion ---- */
html,body{overflow-x:clip}
#progress{position:fixed;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent2));transform:scaleX(0);transform-origin:left;z-index:20}
h1 span{background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent));background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:gshift 6s linear infinite}
@keyframes gshift{to{background-position:200% center}}
#rot{display:inline-block;transition:opacity .3s,transform .3s}#rot.out{opacity:0;transform:translateY(10px)}
.hero{position:relative}
.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.28;pointer-events:none;z-index:-1}
.o1{width:300px;height:300px;background:var(--accent);top:-40px;left:-80px;animation:drift 14s ease-in-out infinite}
.o2{width:260px;height:260px;background:var(--accent2);bottom:-60px;right:10%;animation:drift 18s ease-in-out infinite reverse}
@keyframes drift{50%{transform:translate(40px,30px) scale(1.12)}}
.hero-art{width:100%;height:auto;display:block;filter:drop-shadow(0 20px 40px rgba(0,0,0,.35));animation:float 7s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-8px)}}

/* ---- Hero Tech Pills ---- */
.tech-pills{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:20px}
.tp-label{font-size:.72rem;font-weight:800;letter-spacing:.08em;color:var(--accent);margin-right:2px}
.tp{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;background:rgba(17,25,54,.85);border:1px solid var(--line);border-radius:99px;font-size:.82rem;font-weight:600;color:var(--text);text-decoration:none;transition:all .2s ease;backdrop-filter:blur(8px)}
.tp:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 6px 18px rgba(34,211,238,.28);color:#fff}
.tp span{font-size:.9rem}

/* ---- Hero Stage (Unified 3D Coder with Tech Badges) ---- */
.hero-stage-container{position:relative;width:100%;display:flex;justify-content:center;align-items:center;perspective:1000px}
.hero-stage{position:relative;width:100%;max-width:480px;padding:8px 8px 14px;display:flex;flex-direction:column;align-items:center;user-select:none;box-sizing:border-box}
.stage-glow{position:absolute;border-radius:50%;pointer-events:none;z-index:1;filter:blur(55px)}
.glow-cyan{width:320px;height:320px;background:radial-gradient(circle,rgba(34,211,238,.35) 0%,transparent 70%);top:40%;left:50%;transform:translate(-50%,-50%);animation:glowBreath 5s ease-in-out infinite alternate}
.glow-purple{width:380px;height:380px;background:radial-gradient(circle,rgba(168,85,247,.3) 0%,transparent 70%);top:30%;left:50%;transform:translate(-50%,-50%);animation:glowBreath 7s ease-in-out infinite alternate-reverse}
@keyframes glowBreath{0%{opacity:.6;transform:translate(-50%,-50%) scale(.92)}100%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}}
.stage-particles{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.pt{position:absolute;width:4px;height:4px;border-radius:50%;background:#fff;box-shadow:0 0 8px #22d3ee,0 0 14px #a78bfa;animation:ptTwinkle 3.2s ease-in-out infinite}
.pt1{top:12%;left:24%;animation-delay:0s;width:3px;height:3px}
.pt2{top:18%;right:22%;animation-delay:1.1s;width:4px;height:4px}
.pt3{top:46%;left:14%;animation-delay:2.2s;width:3.5px;height:3.5px}
.pt4{top:58%;right:16%;animation-delay:.7s;width:4.5px;height:4.5px}
.pt5{top:76%;left:28%;animation-delay:1.8s;width:3px;height:3px}
.pt6{top:82%;right:30%;animation-delay:2.9s;width:4px;height:4px}
@keyframes ptTwinkle{0%,100%{opacity:.2;transform:translateY(0) scale(.7)}50%{opacity:1;transform:translateY(-10px) scale(1.3)}}

/* Coder Wrap & 3D Artwork */
.coder-wrap{position:relative;z-index:3;width:100%;max-width:440px;margin:0 auto;display:flex;justify-content:center;align-items:center;animation:coderFloat 6s ease-in-out infinite}
@keyframes coderFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.coder-img{width:100%;height:auto;display:block;object-fit:contain;border-radius:28px;box-shadow:0 24px 60px rgba(0,0,0,.65),0 0 40px rgba(34,211,238,.18);border:1px solid rgba(255,255,255,.08);transition:transform .4s ease}
.hero-stage:hover .coder-img{transform:scale(1.02)}

/* Brand Bar Pedestal (Cleanly Below the Laptop Desk) */
.brand-bar{position:relative;z-index:4;margin-top:16px;width:100%;max-width:440px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:rgba(11,17,38,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(34,211,238,.3);border-radius:14px;box-shadow:0 10px 30px rgba(0,0,0,.5),0 0 20px rgba(34,211,238,.2);text-decoration:none;color:var(--text);transition:all .25s ease;animation:bbPulse 4s ease-in-out infinite;box-sizing:border-box}
@keyframes bbPulse{0%,100%{box-shadow:0 10px 30px rgba(0,0,0,.5),0 0 16px rgba(34,211,238,.2);border-color:rgba(34,211,238,.3)}50%{box-shadow:0 14px 38px rgba(0,0,0,.6),0 0 26px rgba(167,139,250,.35);border-color:rgba(167,139,250,.5)}}
.brand-bar:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 14px 40px rgba(0,0,0,.6),0 0 30px rgba(34,211,238,.4)}
.bb-left{display:flex;align-items:center;gap:10px;min-width:0;flex:1 1 auto}
.bb-ig{width:32px;height:32px;flex-shrink:0;border-radius:9px;background:radial-gradient(circle at 30% 107%,#fdf497 0%,#fdf497 5%,#fd5949 45%,#d6249f 60%,#285aeb 90%);display:grid;place-items:center;color:#fff;box-shadow:0 3px 10px rgba(214,36,159,.4)}
.bb-meta{display:flex;flex-direction:column;min-width:0}
.bb-name{font-size:.85rem;font-weight:800;letter-spacing:-.01em;color:#fff;white-space:nowrap}
.bb-tags{font-size:.68rem;color:var(--muted);letter-spacing:.02em;white-space:nowrap}
.bb-divider{width:1px;height:24px;background:var(--line);flex-shrink:0}
.bb-right{display:flex;align-items:center;gap:8px;flex-shrink:0}
.bb-radar{position:relative;width:10px;height:10px;display:inline-flex;align-items:center;justify-content:center}
.bb-pulse-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 10px #22c55e}
.bb-radar::after{content:"";position:absolute;inset:-3px;border-radius:50%;border:1.5px solid #22c55e;animation:radarPing 1.8s cubic-bezier(0,0,.2,1) infinite}
@keyframes radarPing{0%{transform:scale(.6);opacity:1}100%{transform:scale(2.2);opacity:0}}
.bb-follow{font-size:.76rem;font-weight:600;color:var(--muted);white-space:nowrap}
.bb-bookmark{color:#f43f5e;filter:drop-shadow(0 0 6px rgba(244,63,94,.6));flex-shrink:0}

/* Responsive Rules */
@media(max-width:760px){
  .hero{grid-template-columns:1fr;gap:24px}
  .hero-stage-container{margin-top:16px;width:100%}
  .hero-stage{max-width:min(420px,100%);padding:4px}
  .coder-wrap{max-width:100%}
  .coder-img{border-radius:20px}
  .brand-bar{max-width:100%;padding:8px 12px;gap:8px;margin-top:12px}
  .bb-tags{display:none}
  .bb-name{font-size:.82rem}
  .tech-pills{gap:6px;margin-top:16px}
  .tp{font-size:.78rem;padding:5px 10px}
}
@media(max-width:480px){
  .hero-stage{max-width:min(360px,94vw);padding:2px}
  .coder-img{border-radius:18px}
  .brand-bar{padding:7px 10px;gap:6px;margin-top:10px}
  .bb-ig{width:26px;height:26px;border-radius:7px}
  .bb-name{font-size:.78rem}
  .bb-divider{height:18px}
  .bb-follow{font-size:.72rem}
  .bb-bookmark{width:14px;height:14px}
  .tech-pills{gap:5px}
  .tp{font-size:.74rem;padding:4px 8px}
}
@media(prefers-reduced-motion:reduce){
  .hero-stage *,.stage-glow,.coder-wrap,.brand-bar{animation:none!important}
}
.btn{position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(34,211,238,.28)}
.btn:not(.ghost)::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.5) 50%,transparent 70%);transform:translateX(-130%)}
.btn:not(.ghost):hover::after{transform:translateX(130%);transition:transform .7s}
.btn.pulse{animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,211,238,.5)}70%,100%{box-shadow:0 0 0 14px rgba(34,211,238,0)}}
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.js .rv.in{opacity:1;transform:none}
.js .pcard.in:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(0,0,0,.3)}
.pcard .cover .art{transition:transform .5s}.pcard:hover .cover .art{transform:scale(1.07)}
.strip div{transition:border-color .2s,transform .2s}.strip div:hover{border-color:var(--accent);transform:translateY(-2px)}
.who{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
#stickyCta{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:15;transform:translateY(140%);transition:transform .35s ease;box-shadow:0 10px 30px rgba(0,0,0,.35)}
#stickyCta.show{transform:none}
.chk{display:block;margin-bottom:8px}
.chk circle{stroke-dasharray:151;stroke-dashoffset:151;animation:draw .6s ease forwards}
.chk path{stroke-dasharray:40;stroke-dashoffset:40;animation:draw .4s .5s ease forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.qrbox.flash{animation:pop .45s ease}
@keyframes pop{0%{transform:scale(.92);opacity:.4}100%{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.js .rv{opacity:1;transform:none}#stickyCta{transform:none}}
@media(min-width:761px){.hero h1{min-height:4.5em}}
/* ---- v5 checkout ---- */
.co{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start}
.co-main{display:grid;gap:18px}
.co-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px}
.co-card h3{margin:0 0 16px;font-size:1.1rem;display:flex;align-items:center;gap:10px}
.co-card h3 i{width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--btn-text);font-style:normal;font-size:.85rem;font-weight:800;display:grid;place-items:center}
.btn.block{display:block;width:100%;text-align:center}
.btn.sm{padding:6px 14px;font-size:.88rem;margin:0}
.warn{display:none;background:#fef3c7;color:#78350f;border:1px solid #f59e0b;border-radius:12px;padding:10px 14px;margin:0 auto 18px;max-width:760px;font-size:.92rem}
/* stepper */
.stepper{display:flex;align-items:center;justify-content:center;max-width:460px;margin:0 auto 28px}
.st{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:.82rem;color:var(--muted);font-weight:600}
.st i{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-weight:800;border:2px solid var(--line);background:var(--card);transition:all .35s}
.st.act i{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 5px color-mix(in srgb,var(--accent) 20%,transparent)}
.st.act{color:var(--text)}
.st.done i{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:transparent;position:relative}
.st.done i::after{content:"✓";position:absolute;color:var(--btn-text);font-size:1rem;animation:popin .35s}
.ln{flex:1;height:3px;background:var(--line);margin:0 8px 22px;border-radius:2px;position:relative;overflow:hidden}
.ln::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--accent),var(--accent2));transform:scaleX(0);transform-origin:left;transition:transform .5s ease}
.ln.fill::after{transform:none}
@keyframes popin{from{transform:scale(0)}to{transform:scale(1)}}
/* product options */
.opts{display:grid;gap:10px}
.opt{display:flex;align-items:center;gap:12px;padding:10px 14px 10px 10px;border:1.5px solid var(--line);border-radius:14px;cursor:pointer;position:relative;transition:border-color .2s,background .2s,box-shadow .2s,transform .2s}
.opt:hover{transform:translateX(3px);border-color:color-mix(in srgb,var(--accent) 60%,var(--line))}
.opt input{position:absolute;opacity:0;pointer-events:none}
.opt .thumb{flex:none;width:84px;height:44px;border-radius:10px;overflow:hidden;display:grid;place-items:center}
.opt .thumb img{width:100%;height:100%;object-fit:contain}
.otxt{flex:1;min-width:0}.otxt b{display:block;font-size:.95rem;line-height:1.3}.otxt small{color:var(--muted)}
.oprice{text-align:right;font-weight:800}.oprice small{display:block;color:var(--muted);font-weight:600;font-size:.75rem}
.tick{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid var(--line);position:relative;transition:all .25s}
.opt.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.opt.sel .tick{background:var(--accent);border-color:var(--accent);animation:popin .3s}
.opt.sel .tick::after{content:"";position:absolute;left:6px;top:2px;width:5px;height:10px;border:solid var(--btn-text);border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.opt.best::before{content:"BEST VALUE";position:absolute;top:-9px;right:14px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:var(--btn-text);font-size:.65rem;font-weight:800;padding:2px 8px;border-radius:99px;letter-spacing:.05em}
/* pay */
.paygrid{display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center}
.qrframe{position:relative;width:262px;padding:21px;background:#fff;border-radius:18px;display:grid;place-items:center;min-height:262px}
.qrframe .qrbox{background:transparent;padding:0;margin:0}
.qrframe.flash{animation:pop .45s ease}
.cn{position:absolute;width:26px;height:26px;border:4px solid var(--accent);animation:cn 2s ease-in-out infinite}
.c1{top:7px;left:7px;border-right:0;border-bottom:0;border-radius:10px 0 0 0}.c2{top:7px;right:7px;border-left:0;border-bottom:0;border-radius:0 10px 0 0}
.c3{bottom:7px;left:7px;border-right:0;border-top:0;border-radius:0 0 0 10px}.c4{bottom:7px;right:7px;border-left:0;border-top:0;border-radius:0 0 10px 0}
@keyframes cn{50%{transform:scale(1.15);opacity:.7}}
.qrframe::after{content:"";position:absolute;left:21px;right:21px;top:21px;height:3px;border-radius:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);box-shadow:0 0 14px var(--accent);animation:scan 2.8s ease-in-out infinite}
@keyframes scan{0%,100%{transform:translateY(0)}50%{transform:translateY(215px)}}
.big-amt{font-size:2.6rem;font-weight:800;line-height:1.1}
.upirow{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg);border:1px dashed var(--line);border-radius:12px;padding:8px 8px 8px 14px;margin:8px 0 16px}
.upirow code{font-size:.95rem;word-break:break-all}
/* form */
.fld{position:relative;margin-top:14px}
.fld input{padding:22px 40px 8px 14px;border-width:1.5px;transition:border-color .2s,box-shadow .2s}
.fld label{position:absolute;left:15px;top:15px;margin:0;font-weight:500;color:var(--muted);pointer-events:none;transition:all .18s;font-size:1rem}
.fld input:focus+label,.fld input:not(:placeholder-shown)+label{top:6px;font-size:.72rem;color:var(--accent);font-weight:700}
.fld input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.fld.ok input{border-color:#22c55e}.fld.bad input{border-color:var(--err)}
.fld.ok::after{content:"✓";position:absolute;right:14px;top:14px;color:#22c55e;font-weight:800;animation:popin .3s}
.fld.bad::after{content:"!";position:absolute;right:16px;top:14px;color:var(--err);font-weight:800}
.tip{margin:12px 0 0;padding:10px 14px}.tip summary{font-size:.9rem}.tip p{font-size:.9rem}
form.shake{animation:shake .4s}
@keyframes shake{20%,60%{transform:translateX(-7px)}40%,80%{transform:translateX(7px)}}
#submitBtn{margin-top:6px}
.btn.loading{pointer-events:none;opacity:.9}
.btn.loading::before{content:"";display:inline-block;width:14px;height:14px;border:2.5px solid currentColor;border-right-color:transparent;border-radius:50%;margin-right:8px;vertical-align:-2px;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* success */
.success{display:none;text-align:center}
.success.show{display:block;animation:rise .5s ease}
@keyframes rise{from{opacity:0;transform:translateY(16px)}}
.chk{margin:0 auto 4px}
.receipt{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:6px 14px;margin:0 0 14px;text-align:left}
.receipt div{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed var(--line);font-size:.92rem}
.receipt div:last-child{border:0}.receipt span{color:var(--muted)}.receipt b{text-align:right;word-break:break-all}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}.two .btn{margin:0;text-align:center}
.tl{list-style:none;padding:0;margin:18px 0 0;text-align:left;border-left:2px solid var(--line);margin-left:10px}
.tl li{position:relative;padding:0 0 14px 22px;font-size:.92rem;opacity:0;animation:rise .5s forwards}
.tl li:nth-child(2){animation-delay:.25s}.tl li:nth-child(3){animation-delay:.5s}
.tl li::before{content:"";position:absolute;left:-7px;top:4px;width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.tl b{display:block}.tl span{color:var(--muted)}
.linkbtn{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;text-decoration:underline}
/* summary */
.sum{position:sticky;top:84px;background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.sumcover{display:grid;place-items:center;padding:14px}.sumcover img{width:100%;height:140px;object-fit:contain;animation:float 6s ease-in-out infinite}
.sumbody{padding:18px 20px 20px}.sumbody h3{margin:8px 0 14px;font-size:1.05rem}
.srow{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.92rem}.srow span{color:var(--muted)}.srow b{text-align:right}
.stotal{display:flex;justify-content:space-between;align-items:baseline;padding:14px 0 6px}.stotal span{font-weight:700}.stotal b{font-size:1.9rem}
.trust{list-style:none;padding:0;margin:8px 0 0;color:var(--muted);font-size:.88rem}
.trust li{padding:3px 0 3px 22px;position:relative}.trust li::before{content:"✓";position:absolute;left:0;color:#22c55e;font-weight:800}
/* toast + confetti */
#toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translate(-50%,30px);background:var(--text);color:var(--bg);padding:10px 18px;border-radius:99px;font-weight:600;font-size:.92rem;opacity:0;pointer-events:none;transition:all .3s;z-index:40}
#toast.show{opacity:1;transform:translate(-50%,0)}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:30}
@media(max-width:900px){.co{grid-template-columns:1fr}.sum{position:static;order:-1}.sumcover img{height:110px}}
@media(max-width:600px){.paygrid{grid-template-columns:1fr;justify-items:center;text-align:center}.paycol{width:100%}.upirow{text-align:left}.opt .thumb{width:64px}.co-card{padding:18px}.big-amt{font-size:2.2rem}}
@keyframes riseIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.tl li{animation:riseIn .5s forwards}
.tl li:nth-child(2){animation-delay:.25s}.tl li:nth-child(3){animation-delay:.5s}
@media (prefers-reduced-motion:reduce){.tl li{opacity:1}}

/* scan line removed: never draw over the QR itself */
.qrframe::after{display:none}
/* keep decorative corners well outside the QR quiet zone */
.cn{width:16px;height:16px;border-width:3px;animation:cnfade 2s ease-in-out infinite}
.c1{top:5px;left:5px}.c2{top:5px;right:5px}.c3{bottom:5px;left:5px}.c4{bottom:5px;right:5px}
@keyframes cnfade{50%{opacity:.45}}
/* whole-pixel QR canvas sizing */
.qrframe{width:auto;min-height:0;padding:16px;display:inline-grid}
.qrcol{text-align:center}
.upirow code{white-space:nowrap;word-break:normal;font-size:.88rem}
/* ---- v6 brand + topics ---- */
.logo::before{display:none}
.logo{display:inline-flex;align-items:center;gap:12px;text-decoration:none;transition:transform .2s ease}
.logo:hover{transform:translateY(-1px)}
.mark{width:42px;height:42px;border-radius:12px;box-shadow:0 4px 18px rgba(34,211,238,.3);display:block;transition:box-shadow .25s,transform .25s}
.logo:hover .mark{box-shadow:0 6px 24px rgba(34,211,238,.5);transform:scale(1.04)}
.mark.sm{width:22px;height:22px;border-radius:6px;box-shadow:none;display:inline-block;vertical-align:-5px;margin-right:6px}
.lt{display:flex;flex-direction:column;line-height:1.18}
.brand-name{font-weight:800;font-size:1.12rem;letter-spacing:-0.02em;color:var(--text);display:inline-flex;align-items:baseline}
.brand-sep{color:var(--accent);font-weight:900;margin:0 1px;text-shadow:0 0 10px rgba(34,211,238,.75);animation:cursorGlow 2.4s ease-in-out infinite}
@keyframes cursorGlow{0%,100%{opacity:1;color:var(--accent)}50%{opacity:.45;color:var(--accent2)}}
.brand-sub{font-size:.62rem;letter-spacing:.22em;color:var(--muted);font-weight:700;margin-top:2px;display:block}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);border:1px solid color-mix(in srgb,var(--accent) 45%,var(--line));background:color-mix(in srgb,var(--accent) 10%,transparent);padding:9px 22px;border-radius:99px}
.topics{background:radial-gradient(55% 45% at 85% 0%,rgba(139,92,246,.14),transparent),radial-gradient(40% 40% at 5% 100%,rgba(34,211,238,.08),transparent)}
.topics h2{font-size:clamp(2rem,5vw,3.3rem);letter-spacing:-.035em;line-height:1.06;max-width:760px;margin:18px auto 16px}
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic{display:flex;flex-direction:column;text-decoration:none;color:inherit;background:linear-gradient(160deg,var(--card),color-mix(in srgb,var(--card) 65%,var(--bg)));border:1px solid var(--line);border-radius:22px;padding:24px;transition:border-color .25s,box-shadow .25s}
.ti{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 13%,var(--card));color:var(--accent);margin-bottom:22px;transition:background .25s,color .25s,transform .25s}
.topic h3{margin:0 0 8px;font-size:1.18rem;letter-spacing:-.01em}
.topic p{margin:0 0 16px;color:var(--muted);font-size:.95rem;flex:1}
.topic .in{font-size:.82rem;font-weight:700;color:var(--accent);opacity:.8;transition:opacity .2s,transform .2s}
.topic:hover{border-color:var(--accent);box-shadow:0 18px 40px rgba(0,0,0,.28)}
.topic:hover .ti{background:var(--accent);color:var(--btn-text);transform:rotate(-6deg) scale(1.06)}
.topic:hover .in{opacity:1;transform:translateX(4px)}
.js .topic.in{transition:opacity .6s ease,transform .3s ease,border-color .25s,box-shadow .25s}
.js .topic.in:hover{transform:translateY(-6px)}
@media(max-width:1000px){.tgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.tgrid{grid-template-columns:1fr}nav a:not(:last-child){display:none}.nav-buy{margin-left:0;padding:6px 14px;font-size:.84rem}.lt b{font-size:1rem}.lt small{letter-spacing:.18em}}