:root{--bg:#06061a;--card:rgba(255,255,255,.035);--line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);--text:#eef0ff;--muted:#a2a7c6;--dim:#7c81a3;--p:#a78bfa;--c:#22d3ee;--pk:#f0abfc;
--iri:linear-gradient(110deg,#a78bfa 0%,#f0abfc 25%,#67e8f9 50%,#818cf8 75%,#a78bfa 100%);
--font:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei UI","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:72px}
html,body{overflow-x:hidden}@supports (overflow:clip){html,body{overflow-x:clip}}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased;position:relative}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul{list-style:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.iri{background:var(--iri);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 7s linear infinite}
@keyframes shine{to{background-position:-200% center}}

/* ===== aurora background (covers full page) ===== */
.aurora{position:absolute;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.aurora::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:linear-gradient(#000,transparent 1400px);mask-image:linear-gradient(#000,transparent 1400px)}
.aurora i{position:absolute;border-radius:50%;filter:blur(110px);opacity:.38;animation:drift 26s ease-in-out infinite alternate;will-change:transform}
.aurora i:nth-child(1){width:640px;height:520px;background:#7c3aed;top:-160px;left:-180px}
.aurora i:nth-child(2){width:560px;height:480px;background:#0891b2;top:80px;right:-200px;animation-delay:-8s}
.aurora i:nth-child(3){width:520px;height:420px;background:#c026d3;top:16%;left:30%;opacity:.2;animation-delay:-4s}
.aurora i:nth-child(4){width:600px;height:500px;background:#4f46e5;top:30%;right:-220px;opacity:.26;animation-delay:-12s}
.aurora i:nth-child(5){width:560px;height:460px;background:#0e7490;top:46%;left:-220px;opacity:.26;animation-delay:-16s}
.aurora i:nth-child(6){width:520px;height:440px;background:#a21caf;top:62%;right:-160px;opacity:.22;animation-delay:-6s}
.aurora i:nth-child(7){width:620px;height:480px;background:#6d28d9;top:78%;left:20%;opacity:.24;animation-delay:-10s}
.aurora i:nth-child(8){width:560px;height:420px;background:#0891b2;top:92%;right:10%;opacity:.2;animation-delay:-2s}
@keyframes drift{0%{transform:translate(0,0) scale(1)}100%{transform:translate(80px,60px) scale(1.15)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ===== nav ===== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);background:rgba(6,6,26,.62);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:64px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;letter-spacing:.08em}
.logo svg{width:32px;height:32px;filter:drop-shadow(0 0 10px rgba(167,139,250,.5))}
.nav ul{display:flex;gap:30px;margin-left:auto;font-size:15px;color:var(--muted)}
.nav ul a{transition:color .2s}
.nav ul a:hover{color:var(--text)}
.menu{display:none;margin-left:12px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line2);background:transparent;color:var(--text);cursor:pointer}
.menu svg{width:20px;height:20px;margin:auto;display:block}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;font-family:inherit;transition:.25s;border:1px solid transparent;cursor:pointer;white-space:nowrap}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-pri{background:var(--iri);background-size:200% auto;color:#0b0b1f;box-shadow:0 10px 34px -10px rgba(167,139,250,.75)}
.btn-pri:hover{background-position:100% center;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line2);background:rgba(255,255,255,.04);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.07)}
.btn.soon{cursor:not-allowed;position:relative;color:#1a1530;opacity:.92}
.btn.soon:hover{transform:none}
.btn.soon em{font-style:normal;font-size:12px;padding:2px 8px;border-radius:99px;background:rgba(10,10,30,.18)}

/* ===== hero ===== */
.hero{padding:92px 0 40px;text-align:center;position:relative}
.orb{position:absolute;left:50%;top:40px;width:520px;height:520px;transform:translateX(-50%);z-index:-1;pointer-events:none}
.orb::before{content:"";position:absolute;inset:60px;border-radius:50%;background:conic-gradient(from 0deg,#a78bfa,#f0abfc,#67e8f9,#818cf8,#a78bfa);filter:blur(70px);opacity:.42;animation:spin 18s linear infinite}
.orb::after{content:"";position:absolute;inset:150px;border-radius:50%;background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.35),rgba(167,139,250,.12) 40%,transparent 70%);animation:breathe 6s ease-in-out infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes breathe{50%{transform:scale(1.12);opacity:.7}}
.sparks{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.sparks span{position:absolute;width:3px;height:3px;border-radius:50%;background:#fff;box-shadow:0 0 8px 2px rgba(167,139,250,.8);opacity:0;animation:rise 9s linear infinite}
.sparks span:nth-child(odd){box-shadow:0 0 8px 2px rgba(103,232,249,.8)}
.sparks span:nth-child(1){left:12%;top:60%;animation-delay:0s}
.sparks span:nth-child(2){left:24%;top:30%;animation-delay:-2s}
.sparks span:nth-child(3){left:38%;top:70%;animation-delay:-4s}
.sparks span:nth-child(4){left:62%;top:40%;animation-delay:-1s}
.sparks span:nth-child(5){left:74%;top:65%;animation-delay:-5s}
.sparks span:nth-child(6){left:86%;top:25%;animation-delay:-3s}
.sparks span:nth-child(7){left:50%;top:20%;animation-delay:-6s}
.sparks span:nth-child(8){left:92%;top:55%;animation-delay:-7s}
.sparks span:nth-child(9){left:6%;top:35%;animation-delay:-8s}
@keyframes rise{0%{opacity:0;transform:translateY(0)}15%{opacity:.9}100%{opacity:0;transform:translateY(-160px)}}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;border:1px solid var(--line2);background:rgba(255,255,255,.04);font-size:13px;color:#c9cdea;backdrop-filter:blur(6px)}
.badge b{width:7px;height:7px;border-radius:50%;background:var(--c);box-shadow:0 0 10px var(--c);animation:breathe 3s ease-in-out infinite}
.hero h1{font-size:clamp(44px,7.4vw,88px);line-height:1.12;font-weight:800;letter-spacing:.04em;margin:26px 0 18px}
.hero .pos{font-size:clamp(18px,2.4vw,24px);font-weight:600;color:#e3e5fb;letter-spacing:.08em;margin-bottom:16px}
.hero p.lead{font-size:clamp(15px,1.7vw,18px);color:var(--muted);max-width:760px;margin:0 auto}
.cta{display:flex;gap:14px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.note{margin-top:16px;font-size:13px;color:var(--dim)}

.hero{padding:76px 0 24px}
.hero h1{margin:22px 0 14px}
.cta{margin-top:30px}

/* ===== stacked showcase ===== */
.stage-wrap{position:relative;margin:56px auto 0;max-width:1180px}
.stage{position:relative;height:calc(min(820px,66vw) * .548 + 60px);perspective:1800px;transform-style:preserve-3d;transition:transform .5s ease-out}
.stage::after{content:"";position:absolute;left:10%;right:10%;bottom:-36px;height:90px;border-radius:50%;background:radial-gradient(closest-side,rgba(124,58,237,.55),rgba(34,211,238,.18) 60%,transparent);filter:blur(24px);z-index:-1}
.slide{position:absolute;left:50%;top:56px;width:min(820px,66vw);aspect-ratio:1600/877;margin-left:calc(min(820px,66vw) / -2);border-radius:14px;padding:1px;background:linear-gradient(140deg,rgba(167,139,250,.7),rgba(103,232,249,.25) 40%,rgba(240,171,252,.55));transition:transform .8s cubic-bezier(.2,.75,.2,1),opacity .8s,filter .8s;cursor:pointer;will-change:transform;box-shadow:0 30px 70px -25px rgba(0,0,0,.8)}
.slide img{width:100%;height:100%;object-fit:cover;object-position:top center;border-radius:13px;background:#1c1c22;pointer-events:none;user-select:none}
.slide::after{content:"";position:absolute;inset:1px;border-radius:13px;background:linear-gradient(180deg,rgba(6,6,26,0),rgba(6,6,26,.55));opacity:1;transition:opacity .8s;pointer-events:none}
.slide[data-o="0"]{transform:translate3d(0,0,0) rotateY(0) scale(1);z-index:10;opacity:1;cursor:zoom-in;box-shadow:0 40px 110px -30px rgba(124,58,237,.75),0 0 0 1px rgba(255,255,255,.04);background-size:200% 200%;animation:flow 8s ease infinite}
.slide[data-o="0"]::after{opacity:0}
.slide[data-o="1"]{transform:translate3d(30%,-4%,-180px) rotateY(-22deg) scale(.86);z-index:9;opacity:.85}
.slide[data-o="-1"]{transform:translate3d(-30%,-4%,-180px) rotateY(22deg) scale(.86);z-index:9;opacity:.85}
.slide[data-o="2"]{transform:translate3d(52%,-8%,-360px) rotateY(-30deg) scale(.74);z-index:8;opacity:.5;filter:saturate(.7)}
.slide[data-o="-2"]{transform:translate3d(-52%,-8%,-360px) rotateY(30deg) scale(.74);z-index:8;opacity:.5;filter:saturate(.7)}
.slide.far{transform:translate3d(0,-10%,-520px) scale(.6);opacity:0;z-index:1;pointer-events:none}
.slide[data-o="1"]:hover,.slide[data-o="-1"]:hover{opacity:1;filter:brightness(1.1)}
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:44px}
.tabs button{font:inherit;font-size:14px;color:var(--muted);background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:999px;padding:7px 16px;cursor:pointer;transition:.25s}
.tabs button:hover{color:var(--text);border-color:var(--line2)}
.tabs button[aria-selected="true"]{color:#0b0b1f;background:var(--iri);background-size:200% auto;border-color:transparent;font-weight:600}
.scap{max-width:680px;margin:18px auto 0;text-align:center;min-height:56px}
.scap b{display:block;font-size:17px;color:#eceeff}
.scap span{font-size:14.5px;color:var(--muted)}

/* ===== sections ===== */
section{padding:84px 0;position:relative}
.sec-h{text-align:center;max-width:760px;margin:0 auto 40px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.24em;font-weight:600;color:var(--c)}
.sec-h h2{font-size:clamp(26px,3.6vw,40px);line-height:1.28;margin:10px 0 10px;font-weight:800;letter-spacing:.02em}
.sec-h p{color:var(--muted);font-size:16px}

/* pipeline strip */
.chain{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin:0 auto 36px;font-size:14.5px}
.chain span{padding:7px 16px;border-radius:999px;border:1px solid rgba(167,139,250,.35);background:rgba(167,139,250,.08);color:#e3e0ff}
.chain i{width:18px;height:1px;background:linear-gradient(90deg,var(--p),var(--c))}
.chain-note{text-align:center;color:var(--dim);font-size:13.5px;margin:-22px 0 36px}

/* feature cards */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{position:relative;padding:22px 22px 20px;border-radius:16px;background:var(--card);border:1px solid var(--line);transition:transform .3s,background .3s}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--iri);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s;pointer-events:none}
.card:hover{transform:translateY(-3px);background:rgba(255,255,255,.055)}
.card:hover::before{opacity:1}
.ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(167,139,250,.24),rgba(34,211,238,.16));border:1px solid rgba(167,139,250,.32);margin-bottom:14px;box-shadow:0 0 22px -6px rgba(167,139,250,.5)}
.ico svg{width:20px;height:20px;stroke:#e2ddff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17px;margin-bottom:4px}
.card p{color:var(--muted);font-size:14px;line-height:1.65}
.more{text-align:center;margin-top:24px;font-size:14px;color:var(--muted)}
.more b{color:#d9dcf5;font-weight:500}

/* editor band */
.band{display:grid;grid-template-columns:1fr 1.5fr;gap:40px;align-items:center;padding:36px 40px;border-radius:22px;background:linear-gradient(120deg,rgba(124,58,237,.12),rgba(8,145,178,.08));border:1px solid var(--line2)}
.band h2{font-size:clamp(24px,3vw,32px);line-height:1.3;margin:8px 0 10px}
.band p{color:var(--muted);font-size:15px}
.band .link{display:inline-block;margin-top:14px;font-size:14px;color:#c4b5fd;background:none;border:0;font-family:inherit;cursor:pointer;padding:0}
.ed-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.ed-list li{font-size:14px;color:#cfd2ee;padding-left:16px;position:relative;line-height:1.6}
.ed-list li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:50%;background:var(--c);box-shadow:0 0 8px var(--c)}
.ed-list li b{color:var(--text);font-weight:600;margin-right:6px}

/* local / cloud strip */
.lc{display:grid;grid-template-columns:1fr 1.6fr;border-radius:20px;border:1px solid var(--line2);background:var(--card);overflow:hidden}
.lc > div{padding:28px 32px}
.lc > div + div{border-left:1px solid var(--line)}
.lc h3{font-size:19px;margin-bottom:6px}
.lc p{color:var(--muted);font-size:14.5px}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tags span{font-size:12.5px;padding:3px 11px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#d2d5f0}
.tags em{font-style:normal;font-size:12px;color:var(--c);margin-right:2px;align-self:center}
.mix{text-align:center;margin-top:18px;color:var(--muted);font-size:14.5px}
.mix b{color:var(--text);font-weight:600}

/* download */
.plats{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:18px}
.plat{position:relative;padding:28px;border-radius:20px;background:var(--card);border:1px solid var(--line);display:flex;flex-direction:column}
.plat.main{border:1px solid transparent;background:linear-gradient(#0c0c24,#0c0c24) padding-box,linear-gradient(140deg,#a78bfa,#22d3ee,#f0abfc) border-box;box-shadow:0 30px 80px -30px rgba(124,58,237,.6)}
.plat .os{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700}
.plat .os svg{width:28px;height:28px;fill:#e8e6ff}
.plat .st{font-size:12px;padding:2px 10px;border-radius:999px;margin-left:auto;font-weight:500;border:1px solid var(--line2);color:var(--muted)}
.plat.main .st{color:#a5f3fc;border-color:rgba(34,211,238,.4);background:rgba(34,211,238,.08)}
.plat ul{margin:16px 0 22px;flex:1}
.plat li{font-size:14px;color:var(--muted);padding-left:14px;position:relative;margin-top:6px}
.plat li::before{content:"";position:absolute;left:0;top:.65em;width:5px;height:5px;border-radius:50%;background:var(--p)}
.plat .btn{width:100%}
.btn-off{border:1px dashed var(--line2);background:transparent;color:var(--dim);cursor:not-allowed}
.free{margin-top:22px;text-align:center;font-size:13.5px;color:var(--dim)}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:10px;transition:border-color .2s}
.faq details[open]{border-color:rgba(167,139,250,.4);background:rgba(167,139,250,.05)}
.faq summary{cursor:pointer;list-style:none;padding:15px 22px;font-size:16px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:9px;height:9px;border-right:2px solid var(--p);border-bottom:2px solid var(--p);transform:rotate(45deg);transition:transform .25s;margin-top:-4px}
.faq details[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq details p{padding:0 22px 16px;color:var(--muted);font-size:15px}

/* footer */
footer{border-top:1px solid var(--line);padding:32px 0;margin-top:20px;background:rgba(4,4,16,.5)}
.copy{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--dim)}
.copy .logo{font-size:16px}.copy .logo svg{width:24px;height:24px}

/* reveal */
.js .rv{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.js .rv.in{opacity:1;transform:none}
.js .rv.d1{transition-delay:.08s}.js .rv.d2{transition-delay:.16s}.js .rv.d3{transition-delay:.24s}
@keyframes flow{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

/* lightbox */
.lb{position:fixed;inset:0;z-index:100;background:rgba(3,3,12,.9);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lb.on{display:flex}
.lb img{max-width:min(1600px,100%);max-height:100%;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
h1,h2,h3{text-wrap:balance}p,li{text-wrap:pretty}

/* responsive */
@media (max-width:1020px){.grid{grid-template-columns:repeat(2,1fr)}.band{grid-template-columns:1fr;gap:24px}.plats{grid-template-columns:1fr 1fr}.plat.main{grid-column:1/-1}}
@media (max-width:760px){.nav ul{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:rgba(8,8,28,.97);border-bottom:1px solid var(--line);padding:8px 24px 16px}
.nav ul.open{display:flex}.nav ul li a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
.nav .btn-sm{margin-left:auto}.menu{display:block}
.hero{padding:56px 0 8px}.orb{width:340px;height:340px}
.stage-wrap{margin-top:40px}
.stage{height:calc(84vw * .548 + 44px);perspective:1000px}.slide{top:40px}
.slide{width:84vw;margin-left:-42vw}
.slide[data-o="1"]{transform:translate3d(7%,-7%,-120px) scale(.9);opacity:.6}
.slide[data-o="-1"]{transform:translate3d(-7%,-7%,-120px) scale(.9);opacity:.6}
.slide[data-o="2"],.slide[data-o="-2"]{transform:translate3d(0,-13%,-240px) scale(.8);opacity:.3}
.tabs{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;margin:32px -24px 0;padding:0 24px 6px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}.tabs button{flex:none}
section{padding:64px 0}
.grid{grid-template-columns:1fr 1fr;gap:12px}.card{padding:18px 16px}.card h3{font-size:15.5px}.card p{font-size:13px}.ico{width:34px;height:34px;margin-bottom:10px}.ico svg{width:17px;height:17px}
.band{padding:26px 20px}.ed-list{grid-template-columns:1fr}
.lc{grid-template-columns:1fr}.lc > div{padding:22px 20px}.lc > div + div{border-left:0;border-top:1px solid var(--line)}
.plats{grid-template-columns:1fr}.plat{padding:22px}
.chain{gap:6px;font-size:13px}.chain span{padding:5px 11px}.chain i{width:8px}
.copy{justify-content:center;text-align:center}}
@media (max-width:420px){.sec-h h2{font-size:25px}}
#features{padding-bottom:56px}#editor,#models{padding-bottom:56px}
@media (max-width:760px){#features,#editor,#models{padding-bottom:40px}}
@media (max-width:760px){
.stage{height:calc(84vw * .548 + 56px)}.slide{top:52px}
.slide[data-o="1"]{transform:translate3d(8%,-10%,-100px) rotate(3deg) scale(.88);opacity:.75}
.slide[data-o="-1"]{transform:translate3d(-8%,-10%,-100px) rotate(-3deg) scale(.88);opacity:.75}
.slide[data-o="2"]{transform:translate3d(14%,-18%,-200px) rotate(5deg) scale(.76);opacity:.4}
.slide[data-o="-2"]{transform:translate3d(-14%,-18%,-200px) rotate(-5deg) scale(.76);opacity:.4}
.chain i{display:none}.chain{gap:6px}
.plat ul{margin:12px 0 16px}}
@media (max-width:760px){
.stage{height:calc(84vw * .548 + 70px)}.slide{top:66px}
.slide[data-o="1"]{transform:translate3d(9%,-17%,-90px) rotate(3deg) scale(.9);opacity:.8}
.slide[data-o="-1"]{transform:translate3d(-9%,-17%,-90px) rotate(-3deg) scale(.9);opacity:.8}
.slide[data-o="2"]{transform:translate3d(16%,-30%,-180px) rotate(6deg) scale(.8);opacity:.45}
.slide[data-o="-2"]{transform:translate3d(-16%,-30%,-180px) rotate(-6deg) scale(.8);opacity:.45}}