:root{--ink:#0f172a;--mut:#475569;--bg:#f8fafc;--line:#e2e8f0;--pri:#4f46e5;--s:204px;--r:18px;
 font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;line-height:1.55;overflow-x:hidden}
img{max-width:100%}
a{color:var(--pri)}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0}
.wrap{width:min(1240px,100% - 32px);margin-inline:auto}
.narrow{width:min(820px,100% - 32px)}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:#fff;padding:8px 12px;border-radius:8px}
.skip:focus{left:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 20px;border-radius:14px;border:0;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible,.tile:focus-visible{outline:3px solid #f59e0b;outline-offset:3px}
.btn-main{color:#fff;background:linear-gradient(135deg,#f59e0b,#f97316 45%,#ec4899);box-shadow:0 12px 26px -10px #f97316}
.btn-ghost{color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-key{color:#fff;background:linear-gradient(135deg,#4f46e5,#9333ea);box-shadow:0 8px 20px -10px #4f46e5;min-height:42px;padding:9px 16px}
.chip{display:inline-flex;gap:6px;align-items:center;padding:6px 14px;border-radius:999px;font-weight:700;font-size:14px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.3)}
.chip-soft{background:#eef2ff;color:#4338ca;border-color:#e0e7ff}

/* header */
.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.82);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid rgba(226,232,240,.8)}
.top-in{display:flex;align-items:center;gap:18px;min-height:66px}
.logo{display:inline-flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-weight:800;font-size:22px;letter-spacing:-.03em;min-height:44px}
.logo b{background:linear-gradient(135deg,#6366f1,#ec4899);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{padding:10px 12px;border-radius:10px;color:#334155;text-decoration:none;font-weight:600}
.nav a:hover{background:#eef2ff;color:#4338ca}
.burger{display:none;width:46px;height:46px;border:0;border-radius:12px;background:#eef2ff;cursor:pointer;padding:12px 11px;flex-direction:column;justify-content:space-between}
.burger i{display:block;height:3px;border-radius:3px;background:#4338ca}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;padding:72px 0 34px;background:radial-gradient(1200px 600px at 10% -10%,#7c3aed 0,transparent 60%),radial-gradient(900px 600px at 100% 0,#db2777 0,transparent 55%),linear-gradient(135deg,#1e1b4b,#312e81 40%,#4c1d95 70%,#831843)}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;animation:float 14s ease-in-out infinite}
.b1{width:340px;height:340px;background:#06b6d4;left:-80px;bottom:-120px}
.b2{width:300px;height:300px;background:#f59e0b;right:8%;top:-120px;animation-delay:-5s}
.b3{width:260px;height:260px;background:#22c55e;right:-90px;bottom:10%;animation-delay:-9s;opacity:.35}
@keyframes float{50%{transform:translate(30px,-26px) scale(1.08)}}
.hero-in{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(32px,5vw,58px);margin:18px 0 16px;font-weight:850}
.grad{background:linear-gradient(90deg,#fde047,#fb923c,#f472b6);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(16px,1.6vw,19px);color:#e0e7ff;max-width:620px;margin:0 0 26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-note{color:#c7d2fe;font-size:14px;margin:14px 0 0}
.hero-art{position:relative;height:380px}
.mini{position:absolute;width:var(--m);height:var(--m);perspective:600px;animation:bob 6s ease-in-out infinite}
.mc{position:relative;width:100%;height:100%;transform-style:preserve-3d;transform:translateZ(calc(var(--m)/-2)) rotateX(-18deg) rotateY(-32deg);animation:spin 18s linear infinite}
.mc i{position:absolute;inset:0;border-radius:16px;display:grid;place-items:center;font-style:normal;font-size:calc(var(--m)*.42)}
.mc .f{background:linear-gradient(135deg,var(--a),var(--b));transform:translateZ(calc(var(--m)/2));box-shadow:inset 0 0 0 1px rgba(255,255,255,.3)}
.mc .r{background:linear-gradient(135deg,var(--b),#0f172a);transform:rotateY(90deg) translateZ(calc(var(--m)/2))}
.mc i{backface-visibility:hidden;-webkit-backface-visibility:hidden}
.mc .l{background:linear-gradient(135deg,var(--a),#0f172a);transform:rotateY(-90deg) translateZ(calc(var(--m)/2))}
.mc .k{background:linear-gradient(135deg,var(--b),var(--a));transform:rotateY(180deg) translateZ(calc(var(--m)/2))}
.mc .t{background:linear-gradient(135deg,#fff,var(--a));transform:rotateX(90deg) translateZ(calc(var(--m)/2))}
.m1{--m:150px;--a:#3b82f6;--b:#7c3aed;left:30%;top:22%}
.m2{--m:92px;--a:#22c55e;--b:#0ea5e9;left:4%;top:6%;animation-delay:-2s}
.m3{--m:104px;--a:#f97316;--b:#ef4444;right:2%;top:2%;animation-delay:-3s}
.m4{--m:84px;--a:#10b981;--b:#06b6d4;left:6%;bottom:2%;animation-delay:-1s}
.m5{--m:96px;--a:#0891b2;--b:#14b8a6;right:6%;bottom:6%;animation-delay:-4s}
.m2 .mc,.m4 .mc{animation-duration:24s;animation-direction:reverse}
@keyframes bob{50%{transform:translateY(-16px)}}
@keyframes spin{from{transform:translateZ(calc(var(--m)/-2)) rotateX(-18deg) rotateY(0)}to{transform:translateZ(calc(var(--m)/-2)) rotateX(-18deg) rotateY(360deg)}}
.stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:44px}
.stats div{padding:16px 18px;border-radius:18px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(8px)}
.stats b{display:block;font-size:clamp(22px,3vw,32px);font-weight:850;background:linear-gradient(90deg,#fff,#fde68a);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{color:#e0e7ff;font-size:14px}
.stats-cap{position:relative;color:#c7d2fe;font-size:12.5px;margin-top:10px}

/* sections */
.sec{padding:76px 0}
.sec-alt{background:linear-gradient(180deg,#eef2ff,#fdf4ff)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 38px}
.sec-head h2{font-size:clamp(28px,3.6vw,42px);margin:14px 0 10px;font-weight:850}
.sec-head p{color:var(--mut);margin:0;font-size:17px}

/* ===== CUBE CATALOG ===== */
.cubes{display:grid;grid-template-columns:repeat(auto-fill,minmax(236px,1fr));gap:34px 22px;justify-items:center}
.tile{position:relative;width:100%;max-width:280px;display:flex;flex-direction:column;align-items:center;gap:14px;padding-top:calc(var(--s)*.16);outline:none;cursor:pointer;-webkit-tap-highlight-color:transparent}
.scene{width:var(--s);height:var(--s);perspective:1000px;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.cube{position:relative;width:100%;height:100%;transform-style:preserve-3d;transform:translateZ(calc(var(--s)/-2)) rotateX(-16deg) rotateY(28deg);transition:transform .85s cubic-bezier(.25,1.25,.4,1)}
.face{position:absolute;inset:0;border-radius:20px;overflow:hidden;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.f-front{transform:translateZ(calc(var(--s)/2));background:linear-gradient(145deg,var(--c1),var(--c2));color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:14px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28),inset 0 -30px 60px -30px rgba(0,0,0,.35)}
.f-front::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 20% 0,rgba(255,255,255,.45),transparent 50%);pointer-events:none}
.f-front .ic{font-size:calc(var(--s)*.3);line-height:1;filter:drop-shadow(0 6px 10px rgba(0,0,0,.25))}
.f-front h3{font-size:calc(var(--s)*.105);margin-top:10px;font-weight:800;text-shadow:0 2px 8px rgba(0,0,0,.25)}
.f-front .hint{position:absolute;bottom:10px;left:0;right:0;font-size:11.5px;opacity:.85;font-weight:600}
.f-right{transform:rotateY(90deg) translateZ(calc(var(--s)/2));background:#fff;color:var(--ink);padding:14px 14px 12px;display:flex;flex-direction:column;gap:6px;box-shadow:inset 0 0 0 2px var(--c1);background-image:linear-gradient(160deg,color-mix(in srgb,var(--c1) 12%,#fff),#fff 60%)}
.f-top{transform:rotateX(90deg) translateZ(calc(var(--s)/2));background:linear-gradient(135deg,color-mix(in srgb,var(--c1) 55%,#fff),color-mix(in srgb,var(--c2) 45%,#fff))}
.f-left{transform:rotateY(-90deg) translateZ(calc(var(--s)/2));background:linear-gradient(135deg,var(--c2),#0f172a)}
.f-right .t{font-weight:800;font-size:15px;display:flex;align-items:center;gap:6px}
.f-right .ilm-price{font-size:14px}
.f-right .ilm-price .ilm-new{font-size:17px}
.f-right .ilm-until{font-size:11px}
.f-right ul{list-style:none;margin:0;padding:0;font-size:12.5px;line-height:1.35;color:#334155;display:flex;flex-direction:column;gap:3px}
.f-right li:nth-child(n+5){display:none}
.f-right li::before{content:"▸ ";color:var(--c1);font-weight:800}
.f-right .time{margin-top:auto;font-size:12px;line-height:1.3;font-weight:700;color:#0f172a;background:color-mix(in srgb,var(--c2) 14%,#fff);border-radius:10px;padding:6px 8px}
.f-right .soon-txt{font-size:13px;color:#334155}
.f-right .vcount{margin-top:auto;font-weight:800;font-size:14px;color:var(--c1)}
.ribbon{position:absolute;top:14px;right:-34px;transform:rotate(45deg);width:140px;text-align:center;padding:4px 0;font-size:11.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:#1f2937;background:linear-gradient(90deg,#fde047,#facc15);box-shadow:0 4px 10px rgba(0,0,0,.2);z-index:2}
.ribbon.sale{background:linear-gradient(90deg,#ef4444,#f97316);color:#fff;font-size:13px}
.tile .shadow{width:calc(var(--s)*.9);height:18px;margin-top:-8px;border-radius:50%;background:radial-gradient(closest-side,rgba(15,23,42,.28),transparent);transition:transform .5s,opacity .5s}
@media (hover:hover){
 .tile:hover .scene{transform:translateY(-12px)}
 .tile:hover .cube{transform:translateZ(calc(var(--s)/-2)) rotateX(-8deg) rotateY(-90deg)}
 .tile:hover .shadow{transform:scale(.8);opacity:.6}
}
.tile.flip .scene,.tile:focus-visible .scene{transform:translateY(-12px)}
.tile.flip .cube,.tile:focus-visible .cube{transform:translateZ(calc(var(--s)/-2)) rotateX(-8deg) rotateY(-90deg)}
.tile.soon .f-front{filter:saturate(.92)}
.meta{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;text-align:center}
.meta .row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.meta .btn{min-height:42px;padding:9px 14px;font-size:14.5px;border-radius:12px;white-space:normal;max-width:100%;line-height:1.25}
.btn-buy{color:#fff;background:linear-gradient(135deg,var(--c1),var(--c2));box-shadow:0 10px 20px -12px var(--c1)}
.btn-open{color:#fff;background:linear-gradient(135deg,#16a34a,#22c55e)}
.btn-lite{background:#fff;color:#334155;border:1px solid var(--line)}
.btn-vote{background:#fff;color:#1f2937;border:2px solid var(--c1)}
.btn-vote:disabled{cursor:default;transform:none;opacity:1;background:color-mix(in srgb,var(--c1) 10%,#fff)}
.pill{display:inline-block;padding:8px 12px;border-radius:14px;font-size:13px;font-weight:700;line-height:1.35;max-width:280px}
.pill-ok{background:#dcfce7;color:#14532d;border:1px solid #86efac}
.pill-soon{background:#fef9c3;color:#713f12;border:1px solid #fde047}
.votes{font-size:13px;color:var(--mut);font-weight:600}
.src-note{text-align:center;color:#94a3b8;font-size:12.5px;margin-top:26px;min-height:1em}

/* features */
.feats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{position:relative;background:#fff;border-radius:var(--r);padding:22px 20px;box-shadow:0 10px 30px -18px rgba(30,27,75,.35);border:1px solid #eef2ff;transition:transform .3s,box-shadow .3s;overflow:hidden}
.feat::after{content:"";position:absolute;right:-30px;top:-30px;width:100px;height:100px;border-radius:50%;background:var(--c);opacity:.12}
.feat:hover{transform:translateY(-6px);box-shadow:0 20px 40px -20px var(--c)}
.feat i{font-style:normal;font-size:26px;width:52px;height:52px;display:grid;place-items:center;border-radius:14px;background:color-mix(in srgb,var(--c) 16%,#fff);margin-bottom:12px}
.feat h3{font-size:18px;margin-bottom:6px}
.feat p{margin:0;color:var(--mut);font-size:15px}

/* steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.steps li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 20px}
.steps b{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;color:#fff;font-size:20px;background:linear-gradient(135deg,var(--c),color-mix(in srgb,var(--c) 50%,#ec4899));margin-bottom:10px;box-shadow:0 8px 18px -8px var(--c)}
.steps h3{font-size:18px;margin-bottom:6px}
.steps p{margin:0;color:var(--mut);font-size:15px}
.device-note{display:flex;gap:10px;align-items:flex-start;margin-top:22px;padding:14px 18px;border-radius:16px;background:linear-gradient(90deg,#eef2ff,#fdf2f8);border:1px solid #e0e7ff;color:#312e81;font-weight:600}

/* books */
.books{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.book{display:flex;gap:20px;align-items:center;background:#fff;border-radius:var(--r);padding:20px;box-shadow:0 10px 30px -18px rgba(30,27,75,.35)}
.cover{flex:none;width:118px;height:160px;border-radius:6px 12px 12px 6px;padding:14px 12px;color:#fff;display:flex;flex-direction:column;gap:4px;background:linear-gradient(150deg,var(--c1),var(--c2));box-shadow:inset 6px 0 0 rgba(0,0,0,.18),0 14px 24px -12px var(--c1);transform:perspective(600px) rotateY(-12deg)}
.cover small{font-weight:800;opacity:.9}.cover b{font-size:22px}.cover span{font-size:12px;line-height:1.3;margin-top:auto}
.book h3{font-size:20px;margin-bottom:6px}.book p{margin:0 0 6px;color:var(--mut)}.muted{color:#94a3b8!important;font-size:14px}

/* faq */
.faq{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px;min-height:44px}
.faq summary::after{content:"+";font-size:22px;line-height:1;color:var(--pri);transition:transform .3s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0;padding:0 20px 18px;color:var(--mut)}

/* footer */
.foot{background:#0f172a;color:#cbd5e1;padding:40px 0 24px}
.foot .logo{color:#fff}
.foot-in{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:start}
.foot p{margin:8px 0 0}
.foot-links{display:flex;gap:6px 18px;flex-wrap:wrap;justify-content:flex-end}
.foot-links a{color:#e2e8f0;text-decoration:none;padding:10px 0}
.copy{grid-column:1/-1;border-top:1px solid #1e293b;padding-top:16px;font-size:13px;color:#94a3b8}

/* modal */
.modal{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:16px}
.modal[hidden]{display:none}
.modal-bg{position:absolute;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(4px);animation:fade .25s}
.modal-box{position:relative;width:min(560px,100%);max-height:calc(100dvh - 32px);overflow:auto;background:#fff;border-radius:22px;padding:24px 22px 20px;box-shadow:0 30px 80px -20px rgba(0,0,0,.5);animation:pop .35s cubic-bezier(.2,1.3,.4,1)}
.modal-x{position:absolute;top:10px;right:10px;width:44px;height:44px;border:0;border-radius:12px;background:#f1f5f9;font-size:18px;cursor:pointer}
.modal .ilm-buy-head{padding-right:40px}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.96)}}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,40px);opacity:0;z-index:120;background:#0f172a;color:#fff;padding:12px 18px;border-radius:14px;font-weight:600;transition:.3s;pointer-events:none;max-width:calc(100% - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* responsive */
@media (max-width:1100px){.feats{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:900px){
 .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;background:#fff;padding:10px 16px 16px;border-bottom:1px solid var(--line);box-shadow:0 20px 30px -20px rgba(0,0,0,.3)}
 .nav.open{display:flex}
 .nav a{padding:12px}
 .burger{display:flex}
 .btn-key{margin-left:auto}
 .hero-in{grid-template-columns:1fr}
 .hero-art{height:220px;order:-1;margin-bottom:-10px}
 .m1{--m:110px;left:38%;top:16%}.m2{--m:70px}.m3{--m:76px}.m4{--m:62px}.m5{--m:70px}
 .books{grid-template-columns:1fr}
}
@media (max-width:600px){
 :root{--s:136px}
 .hero{padding:34px 0 26px}
 .btn-key span{display:none}
 .btn-key{width:46px;padding:0}
 .stats{grid-template-columns:1fr 1fr;margin-top:26px}
 .sec{padding:54px 0}
 .sec-head p{font-size:15.5px}
 .cubes{grid-template-columns:1fr 1fr;gap:26px 10px}
 .tile{gap:10px}
 .f-front h3{font-size:14px}
 .f-front .hint{font-size:10px;bottom:6px}
 .f-right{padding:9px 9px 8px;gap:4px}
 .f-right .t{font-size:12.5px}
 .f-right .ilm-price{font-size:11.5px;gap:1px 4px}
 .f-right .ilm-price .ilm-new{font-size:13.5px}
 .f-right .ilm-pct{font-size:10px;padding:1px 5px}
 .f-right .ilm-until{font-size:9.5px}
 .f-right ul{font-size:10.5px;gap:1px}
 .f-right li:nth-child(n+3){display:none}
 .f-right .time{font-size:10.5px;padding:4px 6px}
 .f-right .soon-txt{font-size:11px}
 .f-right .vcount{font-size:12px}
 .ribbon{font-size:9.5px;width:120px;right:-32px;top:10px}
 .ribbon.sale{font-size:11px}
 .meta .btn{font-size:13px;padding:8px 10px;min-height:44px;white-space:normal;line-height:1.2}
 .pill{font-size:11.5px;padding:7px 9px}
 .feats,.steps{grid-template-columns:1fr}
 .book{flex-direction:column;text-align:center}
 .foot-in{grid-template-columns:1fr}.foot-links{justify-content:flex-start}
 .modal{padding:0;place-items:end center}
 .modal-box{border-radius:22px 22px 0 0;max-height:94dvh;padding:20px 16px 18px}
}
@media (max-width:350px){:root{--s:124px}.cubes{gap:22px 6px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}