:root{--blue:#3B82F6;--violet:#8B5CF6;--pink:#EC4899;--indigo:#2B2470;--grad:linear-gradient(135deg,#3B82F6,#8B5CF6 55%,#EC4899);--soft:linear-gradient(135deg,rgba(59,130,246,.10),rgba(139,92,246,.12) 55%,rgba(236,72,153,.10));
--t1:#1F2240;--t2:#5E637A;--t3:#9A9FB5;--line:rgba(43,36,112,.08);--sh:0 1px 2px rgba(43,36,112,.04),0 10px 30px -12px rgba(43,36,112,.18);--r:20px;--font:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);color:var(--t1);background:#F7F7FC;-webkit-font-smoothing:antialiased;line-height:1.6}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.bg{position:absolute;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg i{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(247,247,252,.72);backdrop-filter:saturate(1.4) blur(16px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:68px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--indigo);letter-spacing:1px}.brand img{width:38px;height:38px}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--t3);letter-spacing:2px;line-height:1}
.links{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--t2)}.links a:hover{color:#5B3FD6}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border-radius:12px;font-size:14.5px;font-weight:600;border:0;cursor:pointer;white-space:nowrap;transition:.2s;font-family:inherit}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn.primary{color:#fff;background:var(--grad);box-shadow:0 10px 24px -10px rgba(139,92,246,.7)}.btn.primary:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn.ghost{color:#4B3FB5;background:#fff;box-shadow:inset 0 0 0 1px rgba(91,63,214,.2)}.btn.ghost:hover{background:#F4F1FE}
.btn.lg{height:52px;padding:0 26px;font-size:16px;border-radius:14px}.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed;box-shadow:none}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;width:40px;height:40px;cursor:pointer}.nav-toggle svg{width:24px;height:24px;stroke:var(--indigo);fill:none;stroke-width:2}
/* animated logo */
.alogo{position:relative;display:inline-block}.alogo img{width:100%;height:100%}
.alogo .tile{position:absolute;inset:9.7%;border-radius:23%;overflow:hidden}
.alogo .glow{position:absolute;left:50%;top:44%;width:56%;height:22%;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(closest-side,rgba(255,255,255,.95),rgba(220,235,255,.5) 45%,transparent);mix-blend-mode:screen;animation:breathe 3.6s ease-in-out infinite}
.alogo .sheen{position:absolute;top:-20%;left:-60%;width:45%;height:140%;transform:rotate(20deg);background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);animation:sheen 3.6s ease-in-out infinite}
@keyframes breathe{0%,100%{opacity:.35;transform:translate(-50%,-50%) scale(.9)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}}
@keyframes sheen{0%,55%{left:-60%}85%,100%{left:120%}}
/* hero */
.hero{position:relative;padding:72px 0 40px;text-align:center;overflow:hidden}
.pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;font-size:13px;color:#5B3FD6;background:var(--soft);box-shadow:inset 0 0 0 1px rgba(139,92,246,.22)}
.pill b{width:6px;height:6px;border-radius:50%;background:var(--grad)}
h1{font-size:54px;line-height:1.18;margin:22px auto 18px;color:var(--indigo);letter-spacing:1px;max-width:860px}
h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{font-size:18px;color:var(--t2);max-width:720px;margin:0 auto 32px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.meta{margin-top:14px;font-size:13px;color:var(--t3)}
.window{margin:52px auto 0;max-width:1080px;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 40px 100px -30px rgba(43,36,112,.45),0 0 0 1px rgba(43,36,112,.08)}
.window .bar{height:34px;display:flex;align-items:center;gap:7px;padding:0 14px;background:linear-gradient(#F4F4F8,#ECECF2);border-bottom:1px solid var(--line)}
.window .bar i{width:11px;height:11px;border-radius:50%;background:#FF5F57}.window .bar i:nth-child(2){background:#FEBC2E}.window .bar i:nth-child(3){background:#28C840}
.window .bar span{flex:1;text-align:center;font-size:12px;color:var(--t3);margin-right:50px}
/* sections */
section{position:relative;padding:88px 0}
.sec-hd{text-align:center;max-width:720px;margin:0 auto 48px}.sec-hd .k{font-size:13px;font-weight:700;letter-spacing:3px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:36px;color:var(--indigo);margin:10px 0 12px;line-height:1.3}.sec-hd p{color:var(--t2);margin:0;font-size:16px}
.grid{display:grid;gap:20px}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:rgba(255,255,255,.85);border-radius:var(--r);padding:26px;box-shadow:var(--sh),inset 0 0 0 1px var(--line);backdrop-filter:blur(10px)}
.ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:#6D4AE8;margin-bottom:16px}.ic svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.card h3{margin:0 0 8px;font-size:18px;color:var(--indigo)}.card p{margin:0;color:var(--t2);font-size:14.5px}
.pain .card{position:relative}.pain .card .tag{position:absolute;right:20px;top:24px;font-size:12px;color:#E5484D;background:rgba(229,72,77,.08);padding:2px 9px;border-radius:999px}
.arrow{text-align:center;margin:30px 0;color:var(--t3);font-size:14px}
/* tabs */
.tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:34px}
.tabs button{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:12px;border:0;background:#fff;box-shadow:inset 0 0 0 1px var(--line);font:inherit;font-size:14px;color:var(--t2);cursor:pointer}
.tabs button img{width:20px;height:20px}.tabs button.on{background:var(--grad);color:#fff;box-shadow:0 8px 20px -10px rgba(139,92,246,.7)}.tabs button.on img{filter:brightness(0) invert(1)}
.tab-panel{display:none;grid-template-columns:5fr 7fr;gap:44px;align-items:center}.tab-panel.on{display:grid;animation:fade .4s}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.tab-panel h3{font-size:28px;color:var(--indigo);margin:0 0 12px}.tab-panel p{color:var(--t2);margin:0 0 18px}
.ul{list-style:none;padding:0;margin:0 0 20px}.ul li{display:flex;gap:10px;margin-bottom:10px;font-size:14.5px}.ul li::before{content:"";flex:none;width:18px;height:18px;margin-top:3px;border-radius:6px;background:var(--grad) center/12px no-repeat;-webkit-mask:none}
.ul li::before{background:var(--soft);box-shadow:inset 0 0 0 1px rgba(139,92,246,.3)}
.cost{display:inline-flex;flex-wrap:wrap;gap:8px}.cost span{font-size:12.5px;padding:4px 10px;border-radius:999px;background:rgba(139,92,246,.08);color:#5B3FD6;font-weight:600}
.tab-panel .window{margin:0;max-width:none}
/* billing */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:36px}
.step{position:relative;padding:22px;border-radius:18px;background:#fff;box-shadow:var(--sh),inset 0 0 0 1px var(--line)}.step b{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--grad);color:#fff;font-size:14px;margin-bottom:12px}
.step h4{margin:0 0 4px;color:var(--indigo);font-size:16px}.step p{margin:0;font-size:13.5px;color:var(--t2)}.step.ok b{background:#16A34A}
table.price{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--sh),inset 0 0 0 1px var(--line)}
.price th,.price td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}.price th{background:#F7F6FC;color:var(--t2);font-size:13px}
.price td b{color:var(--indigo);font-variant-numeric:tabular-nums}.price tr:last-child td{border:0}.price .note{color:var(--t3);font-size:13px}
/* pricing */
.plan{position:relative;padding:34px}.plan .tag{display:inline-block;font-size:12px;font-weight:700;color:#5B3FD6;background:var(--soft);padding:3px 10px;border-radius:999px;margin-bottom:12px}
.plan .p{display:flex;align-items:baseline;gap:6px;margin:10px 0 18px}.plan .p b{font-size:52px;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.plan .p span{color:var(--t3)}
.plan.hl{background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;border:2px solid transparent}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 18px}.chips span{padding:8px 14px;border-radius:10px;background:#F5F5FB;font-weight:600;font-size:14px}
/* faq */
details{background:#fff;border-radius:16px;box-shadow:inset 0 0 0 1px var(--line);margin-bottom:12px;padding:0 22px}
summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;font-size:15.5px;color:var(--indigo);display:flex;align-items:center}summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;font-size:22px;color:var(--violet);transition:.2s}details[open] summary::after{transform:rotate(45deg)}
details p{margin:0 0 18px;color:var(--t2);font-size:14.5px}
/* cta band & footer */
.band{border-radius:28px;padding:56px;text-align:center;color:#fff;background:var(--grad);box-shadow:0 30px 80px -30px rgba(139,92,246,.8);position:relative;overflow:hidden}
.band h2{color:#fff}.band p{color:rgba(255,255,255,.85);margin:0 0 26px}.band .btn.ghost{background:#fff}
footer{padding:48px 0 40px;border-top:1px solid var(--line);color:var(--t3);font-size:13px}
footer .wrap{display:flex;gap:40px;flex-wrap:wrap}footer h5{margin:0 0 10px;color:var(--t1);font-size:14px}footer a{display:block;margin-bottom:6px}footer a:hover{color:#5B3FD6}
.ph{color:#D97706}
/* download page */
.dl-grid{display:grid;grid-template-columns:3fr 2fr;gap:22px}
.dl-card{padding:34px}.dl-card .os{display:flex;align-items:center;gap:14px;margin-bottom:18px}.dl-card .os svg{width:40px;height:40px}
.dl-card h3{margin:0;font-size:22px;color:var(--indigo)}.kv{display:grid;grid-template-columns:110px 1fr;gap:10px;margin:18px 0 24px;font-size:14px}.kv dt{color:var(--t3)}.kv dd{margin:0}
.chip-arch{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.arch{padding:16px;border-radius:14px;background:#F7F6FC;box-shadow:inset 0 0 0 1px var(--line)}.arch b{display:block;color:var(--indigo);margin-bottom:2px}.arch span{display:block;font-size:12.5px;color:var(--t3);margin-bottom:12px}.arch .btn{width:100%}
.soon{opacity:.75}.soon .badge{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;background:#F1F2F7;color:var(--t2);margin-left:auto}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}.steps li{counter-increment:s;position:relative;padding:0 0 22px 50px}.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:10px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700}
.steps b{color:var(--indigo)}.steps p{margin:4px 0 0;color:var(--t2);font-size:14px}
.tip{margin-top:6px;padding:12px 14px;border-radius:12px;background:rgba(217,119,6,.07);box-shadow:inset 0 0 0 1px rgba(217,119,6,.2);font-size:13.5px;color:#92400E}
.log{border-left:2px solid rgba(139,92,246,.25);padding-left:22px}.log h4{margin:0 0 6px;color:var(--indigo)}.log .v{font-size:12px;color:#5B3FD6;background:var(--soft);padding:2px 10px;border-radius:999px;margin-left:8px}
/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}
/* responsive */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.nav{-webkit-backdrop-filter:saturate(1.4) blur(16px)}

@media (max-width:960px){.g3,.g4,.flow{grid-template-columns:1fr 1fr}.tab-panel,.dl-grid{grid-template-columns:1fr}h1{font-size:40px}}
@media (max-width:640px){.links,.nav .wrap>.btn{display:none}.nav-toggle{display:block}
 body.nav-open .links{display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;background:#fff;padding:16px 24px;gap:14px;box-shadow:var(--sh)}
 .g3,.g4,.g2,.flow,.chip-arch{grid-template-columns:1fr}h1{font-size:32px}.sub{font-size:16px}h2{font-size:27px}section{padding:60px 0}.hero{padding:44px 0 20px}
 .band{padding:36px 22px}.price th,.price td{padding:12px}.window{border-radius:12px}.window .bar{height:24px}.tabs button{height:36px;padding:0 12px;font-size:13px}.kv{grid-template-columns:90px 1fr}}
.static .reveal{transition:none!important}
.bg{-webkit-mask-image:linear-gradient(#000 60%,transparent);mask-image:linear-gradient(#000 60%,transparent)}
/* 背景光晕：整页单层渐变（无 filter:blur、无裁切容器），兼容 Safari 与超宽屏 */
.bg{display:none!important}
body{position:relative;isolation:isolate}
body::before{content:"";position:absolute;left:0;right:0;top:0;height:min(1400px,160vh);z-index:-1;pointer-events:none;
 background:radial-gradient(42% 55% at 8% 8%,rgba(147,187,255,.55),rgba(147,187,255,0) 100%),
 radial-gradient(40% 55% at 94% 6%,rgba(196,170,255,.55),rgba(196,170,255,0) 100%),
 radial-gradient(34% 40% at 55% 42%,rgba(255,190,224,.42),rgba(255,190,224,0) 100%)}

@media (max-width:640px){
  .wrap{padding-inline:16px}
  .grid,.dl-grid,.tab-panel{grid-template-columns:minmax(0,1fr)}
  .card,.dl-card,.plan{padding:20px}
  .nav-toggle{width:44px;height:44px}
  body.nav-open .links{gap:0;max-height:calc(100vh - 68px);overflow-y:auto}
  .links a{display:flex;align-items:center;min-height:44px}
  main [id]{scroll-margin-top:80px}
  .pill{display:inline-block;height:auto;max-width:100%;padding:5px 12px}
  .pill b{display:inline-block;margin-right:4px;vertical-align:middle}
  .cta .btn,.dl-card .btn{width:100%;max-width:320px;min-height:48px;height:auto;padding:10px 14px;white-space:normal;text-align:center}
  .btn svg,.dl-card .os svg{flex:none}
  .dl-card .os{align-items:flex-start}
  .kv{grid-template-columns:76px minmax(0,1fr);column-gap:8px}
  .price{table-layout:fixed}
  .price th,.price td{padding:9px 6px;font-size:13px;overflow-wrap:anywhere}
  footer .wrap{gap:16px 22px}
  footer .wrap>div:first-child{flex-basis:100%!important;min-width:0!important}
}