*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#f8fbff;color:#0f172a;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.shell{width:min(1180px,calc(100% - 40px));margin:auto}

.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.08)}
.nav{height:76px;display:flex;align-items:center;gap:28px}
.brand img{width:122px}
.links{display:flex;gap:26px;margin-left:auto;align-items:center;font-size:14px;color:#334155}
.links a:hover,.links a.active{color:#2071ff}
.lang{border:1px solid rgba(0,0,0,.15);padding:7px 12px;border-radius:6px;color:#334155}
.menu{display:none;margin-left:auto;background:none;border:0;color:#0f172a;font-size:25px}

.hero{min-height:690px;display:flex;align-items:center;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 77% 48%,rgba(32,113,255,.12),transparent 35%),linear-gradient(180deg,rgba(255,255,255,0),#f8fbff)}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:#2071ff;font-size:13px;font-weight:700;text-transform:uppercase}
.eyebrow:before{content:"";width:28px;height:2px;background:#2071ff}
h1{font-size:clamp(46px,6vw,80px);line-height:1.08;margin:18px 0 20px;letter-spacing:0;color:#0f172a}
.gradient{background:linear-gradient(100deg,#0f172a,#2071ff);-webkit-background-clip:text;color:transparent}
.lead{font-size:18px;color:#475569;max-width:620px}
.actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:6px;font-weight:700;background:#2071ff;color:#fff;box-shadow:0 8px 24px rgba(32,113,255,.25)}
.btn:hover{background:#005be6}
.btn.secondary{background:transparent;border:1px solid rgba(0,0,0,.2);color:#0f172a;box-shadow:none}
.btn.secondary:hover{background:rgba(0,0,0,.05)}

.hero-art{position:relative;max-width:921px;margin:0 auto}
.hero-art img{width:100%;height:auto;border-radius:8px;box-shadow:0 24px 60px rgba(0,0,0,.08)}
.hero-art:after{content:"";position:absolute;inset:-10px;border:1px solid rgba(32,113,255,.3);border-radius:12px;pointer-events:none}

.stats{border-block:1px solid rgba(0,0,0,.08);background:#ffffff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:30px 0}
.stat{text-align:center;border-right:1px solid rgba(0,0,0,.08)}
.stat:last-child{border:0}
.stat b{display:block;color:#0f172a;font-size:27px}
.stat span{font-size:13px;color:#64748b}

.section{padding:92px 0}
.section.alt{background:#ffffff}
.section-head{text-align:center;max-width:720px;margin:0 auto 45px}
.section-head h2{font-size:clamp(32px,4vw,48px);line-height:1.18;margin:10px 0;color:#0f172a}
.section-head p{color:#64748b}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#ffffff;border:1px solid rgba(0,0,0,.08);border-radius:8px;padding:28px;transition:.25s;box-shadow:0 4px 16px rgba(0,0,0,.03)}
.card:hover{transform:translateY(-4px);border-color:rgba(32,113,255,.55);box-shadow:0 12px 30px rgba(32,113,255,.08)}
.icon{width:44px;height:44px;border-radius:7px;background:#2071ff;display:grid;place-items:center;color:#fff;font-size:21px;margin-bottom:20px}
.card h3{margin:0 0 9px;font-size:19px;color:#0f172a}
.card p{margin:0;color:#64748b;font-size:14px}

.band {padding: 52px 0;background: #2071ff url('subscribe-zh.webp') center/cover no-repeat;color:#fff;}
.band-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.band h2{margin:0;font-size:34px;color:#fff;}
.band p{margin:4px 0 0;color:#f8fbff}

.footer{
    padding: 58px 0 28px;
    background: #f1f5f9 !important; /* 优雅的高级浅灰色背景 */
    border-top: 1px solid rgba(0, 0, 0, 0.08) !important;
    color: #475569 !important;
}
.footer-grid{
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 34px;
}
.footer-logo{
    width: 220px;
    height: auto;
    margin-bottom: 12px;
}
.footer .footer-slogan{
    margin: 0 0 10px;
    font-size: 14px;
    color: #334155 !important; /* 标语加深，清晰醒目 */
    letter-spacing: .02em;
    line-height: 1.5;
}
.footer p, .footer a{
    color: #64748b !important; /* 正文与链接为柔和的深灰色 */
    font-size: 13px;
}
.footer a:hover{
    color: #2071ff !important; /* 鼠标悬停变蓝 */
}
.footer h4{
    font-size: 14px;
    margin: 0 0 15px;
    color: #0f172a !important; /* 列标题采用深黑，突出层次 */
}
.footer-col{
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.copyright{
    margin-top: 42px;
    padding-top: 22px;
    border-top: 1px solid rgba(0, 0, 0, 0.08) !important;
    display: flex;
    justify-content: space-between;
    color: #64748b !important;
    font-size: 12px;
}

.page-hero{padding:92px 0 62px;text-align:left;background:radial-gradient(circle at 18% 0,rgba(32,113,255,.12),transparent 52%)}
.page-hero h1{font-size:52px;color:#0f172a}
.crumb{font-size:13px;color:#64748b}

.download-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.platforms{display:flex;gap:8px;flex-wrap:wrap;margin:25px 0}
.pill{padding:8px 14px;border:1px solid rgba(0,0,0,.15);border-radius:5px;color:#475569}
.pill.active{background:#2071ff;color:white;border-color:#2071ff}

.device{background:#ffffff;border:1px solid rgba(0,0,0,.08);padding:55px;text-align:center;border-radius:8px;box-shadow:0 10px 30px rgba(0,0,0,.04)}
.window-logo{font-size:74px;color:#2071ff}

.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.plan{padding:32px;background:#ffffff;border:1px solid rgba(0,0,0,.08);border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.03)}
.plan.featured{border:2px solid #2071ff;transform:translateY(-8px);box-shadow:0 16px 40px rgba(32,113,255,.12)}
.price{font-size:44px;font-weight:800;color:#0f172a}
.price small{font-size:14px;color:#64748b}
.plan ul{padding-left:18px;color:#475569}
.plan .btn{width:100%}

.faq{max-width:850px;margin:auto}
.faq details{background:#ffffff;border:1px solid rgba(0,0,0,.08);border-radius:6px;margin:10px 0;padding:18px 21px;box-shadow:0 2px 8px rgba(0,0,0,.02)}
.faq summary{font-weight:700;cursor:pointer;color:#0f172a}
.faq p{color:#64748b;margin-bottom:0}

.article{max-width:880px;margin:auto;color:#475569}
.article h2{color:#0f172a;margin-top:38px}
.article h3{color:#334155}
.article li{margin:8px 0}

.table{width:100%;border-collapse:collapse}
.table th,.table td{text-align:left;padding:16px;border:1px solid rgba(0,0,0,.1)}
.table th{background:#f1f5f9;color:#0f172a}
.notice{padding:18px;border-left:3px solid #2071ff;background:#f1f5f9;color:#334155}
.center{text-align:center}

.logo-orbit{width:320px;aspect-ratio:1;border-radius:50%;margin:auto;display:grid;place-items:center;border:1px solid rgba(32,113,255,.45);box-shadow:0 0 90px rgba(32,113,255,.1);position:relative}
.logo-orbit:before,.logo-orbit:after{content:"";position:absolute;border:1px solid rgba(32,113,255,.2);border-radius:50%;inset:25px}
.logo-orbit:after{inset:60px}
.logo-orbit img{width:145px;position:relative;z-index:2}

.tags{display:flex;justify-content:flex-start;gap:8px;flex-wrap:wrap}
.tags span{background:#f1f5f9;padding:6px 13px;border-radius:4px;color:#475569;font-size:13px}

@media(max-width:800px){
  .menu{display:block}
  .links{display:none;position:absolute;top:76px;left:0;right:0;background:#ffffff;padding:20px;flex-direction:column;align-items:stretch;box-shadow:0 10px 30px rgba(0,0,0,.1)}
  .links.open{display:flex}
  .hero{min-height:auto;padding:80px 0}
  .hero-grid,.download-layout{grid-template-columns:1fr}
  .hero-art{order:-1}
  .hero h1{font-size:48px}
  .grid,.plans{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:12px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .band-inner{align-items:flex-start;flex-direction:column}
  .page-hero h1{font-size:40px}
  .plan.featured{transform:none}
  .copyright{gap:12px;flex-direction:column}
}

.hero-cine{position:relative;min-height:clamp(600px,calc(100vh - 150px),880px);display:flex;align-items:center;background:#f8fbff;overflow:hidden}
.hero-cine:before{content:"";position:absolute;inset:0;z-index:0;background:radial-gradient(1180px 1010px at 66% 44%,rgba(32,113,255,.1) 0%,rgba(32,113,255,0) 70%),linear-gradient(35deg,#ffffff 0%,#f8fbff 72%)}
.hero-cine-media{position:absolute;bottom:0;left:23%;width:74%;z-index:1;pointer-events:none}
.hero-cine-media img{display:block;width:100%;height:auto}
.hero-cine:after{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;background:linear-gradient(90deg,rgba(248,251,255,.95) 0%,rgba(248,251,255,.7) 28%,rgba(248,251,255,.2) 44%,rgba(248,251,255,0) 56%,rgba(248,251,255,0) 100%)}
.hero-cine-inner{position:relative;z-index:3;width:100%;max-width:none;padding:112px clamp(24px,5.5vw,100px)}
.hero-cine-copy{max-width:760px}
.hero-cine h1{font-size:clamp(40px,4.5vw,68px);line-height:1.1;margin:18px 0 20px;font-weight:800;letter-spacing:-.015em;color:#0f172a}
.hero-cine .lead{font-size:15px;line-height:1.75;color:#64748b;max-width:520px;margin:0}
.hero-cine .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.hero-cine .btn{min-height:44px;padding:0 22px;font-size:14px;width:auto}

.eyebrow.gold{color:#b45309;letter-spacing:.16em}
.eyebrow.gold:before{background:#f59e0b}
.btn.ghost{background:rgba(0,0,0,.05);border:1px solid rgba(0,0,0,0.2);color:#0f172a;box-shadow:none}
.btn.ghost:hover{background:rgba(0,0,0,.1)}
@media(max-width:800px){
  .hero-cine{flex-direction:column;align-items:stretch;min-height:auto}
  .hero-cine-media{position:relative;top:auto;bottom:auto;left:auto;width:100%;transform:none;order:2}
  .hero-cine-inner{order:1;padding:84px 22px 20px}
  .hero-cine h1{font-size:42px}
}

.dl-hero{position:relative;padding:20px 0 54px;overflow:hidden}
.dl-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(720px 520px at 72% 52%,rgba(32,113,255,.08),transparent 66%);pointer-events:none}
.dl-tabs{position:relative;display:flex;justify-content:center;align-items:flex-end;gap:clamp(20px,5.4vw,88px)}
.dl-tab{display:inline-flex;align-items:center;gap:10px;padding:6px 0 14px;background:none;border:0;color:#64748b;font:inherit;font-size:15px;line-height:1;cursor:pointer;position:relative;white-space:nowrap;transition:color .2s}
.dl-tab svg{width:17px;height:17px;fill:currentColor;flex:none}
.dl-tab:hover{color:#0f172a}
.dl-tab.is-active{color:#2071ff}
.dl-tab.is-active:after{content:"";position:absolute;left:-4px;right:-4px;bottom:0;height:2px;background:#2071ff;border-radius:2px}
.dl-body{position:relative;display:grid;grid-template-columns:1fr auto;gap:clamp(24px,4vw,60px);align-items:center;padding-top:clamp(22px,3.2vw,44px)}
.dl-copy{min-width:0}
.dl-title{font-size:clamp(30px,3.7vw,48px);line-height:1.2;margin:0 0 clamp(22px,2.6vw,34px);font-weight:800;letter-spacing:-.01em;color:#0f172a}
.dl-os{color:#2071ff}
.dl-set{display:flex;flex-direction:column;align-items:flex-start;gap:clamp(14px,1.9vw,24px)}
.dl-set[hidden]{display:none}
.dl-req{margin:6px 0 0;font-size:13px;color:#64748b;line-height:1.85}.req-k{color:#334155;margin-right:8px}
.dl-btn{display:inline-flex;align-items:center;justify-content:center;min-width:148px;height:36px;padding:0 22px;border-radius:999px;background:#2071ff;color:#fff;font-size:13px;font-weight:600;transition:background .2s}
.dl-btn:hover{background:#005be6}
.dl-art{position:relative;width:clamp(300px,30vw,430px);aspect-ratio:1;flex:none;justify-self:center}
.dl-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;animation:dlfade 21s infinite}
.dl-art img:nth-child(1){animation-delay:0s}
.dl-art img:nth-child(2){animation-delay:7s}
.dl-art img:nth-child(3){animation-delay:14s}
@keyframes dlfade{0%{opacity:0}3%{opacity:1}30%{opacity:1}33%{opacity:0}100%{opacity:0}}
@media(prefers-reduced-motion:reduce){.dl-art img{animation:none;opacity:0}.dl-art img:first-child{opacity:1}}
.dl-hero+.section{padding-top:64px}
@media(max-width:800px){
  .dl-hero{padding:14px 0 52px}
  .dl-tabs{justify-content:flex-start;gap:22px;overflow-x:auto}
  .dl-tabs::-webkit-scrollbar{display:none}
  .dl-body{grid-template-columns:1fr;gap:26px;padding-top:30px}
  .dl-title{font-size:27px;margin-bottom:24px}
  .dl-art{width:min(320px,84%)}
}