/* —— 下载首屏 —— */
.dl-hero{position:relative;padding:168px 0 110px;overflow:hidden}
.dl-glow{position:absolute;top:-300px;right:-200px;width:1000px;height:800px;background:radial-gradient(ellipse,#ff8c241a,transparent 62%);pointer-events:none}
.dl-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:80px;align-items:center}
.dl-copy h1{font-size:clamp(44px,6vw,82px);line-height:1.08;letter-spacing:-.055em;font-weight:650;margin-top:26px}
.dl-lead{color:var(--muted);font-size:16px;line-height:1.9;max-width:480px;margin-top:28px}
.dl-includes{list-style:none;padding:0;margin:40px 0 0;display:flex;flex-direction:column;gap:10px;max-width:440px}
.dl-includes li{display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:16px;background:#ffffff04;border:1px solid var(--line);transition:border-color .3s,background .3s,transform .5s var(--out)}
.dl-includes li:hover{border-color:var(--line-2);background:#ffffff07;transform:translateX(4px)}
.dl-includes b{display:block;font-size:14px;font-weight:550}
.dl-includes small{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.inc-icon,.req-icon{width:38px;height:38px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;background:#ffffff08;border:1px solid var(--line-2);color:var(--orange)}
.inc-icon .i,.req-icon .i{width:18px;height:18px}
.inc-icon.ps,.req-icon.ps{font-weight:700;font-size:14px;letter-spacing:-.5px;color:#31a8ff;background:#001e36;border-color:#0d3a5c}

.dl-card{padding:28px 30px 30px;border-radius:32px;border-color:var(--line-2);box-shadow:0 40px 100px #0006,inset 0 1px 0 #ffffff08}
.dl-detect{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--muted)}
.dl-detect i{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px #a5c69818}
.dl-detect b{font-weight:500;color:var(--soft)}
.seg{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:4px;margin-top:18px;border-radius:15px;background:#0000002e;border:1px solid var(--line)}
.seg-ind{position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:11px;background:linear-gradient(160deg,#2c2a26,#24221f);border:1px solid var(--line-2);box-shadow:0 4px 14px #0004,inset 0 1px 0 #ffffff0a;transform:translateX(calc(var(--seg,0) * 100%));transition:transform .5s var(--spring)}
.seg button{position:relative;z-index:1;height:44px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:500;color:var(--muted);transition:color .3s}
.seg button .i{width:16px;height:16px}
.seg button[aria-selected=true]{color:var(--text)}
.seg small{font-size:9px;letter-spacing:.5px;color:var(--eyebrow);padding:2px 6px;border-radius:6px;background:#ffffff08;border:1px solid var(--line-2)}
.app-tile{display:grid;place-items:center;padding:40px 0 28px;perspective:900px}
.app-icon{position:relative;width:116px;height:116px;border-radius:32px;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);overflow:hidden;
  box-shadow:0 34px 80px #ff8c183a,0 10px 24px #0006,inset 0 1px 0 #ffffff70,inset 0 -10px 24px #6b2a0020;
  transform:rotateX(var(--tx,0deg)) rotateY(var(--ty,0deg));transition:transform .6s var(--out),filter .7s var(--out),box-shadow .7s;animation:float 6s ease-in-out infinite}
.app-icon svg{width:56px;height:56px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.app-sheen{position:absolute;inset:0;background:radial-gradient(160px circle at var(--sx,30%) var(--sy,20%),#ffffff70,transparent 55%);mix-blend-mode:soft-light;pointer-events:none}
@keyframes float{50%{translate:0 -6px}}
.dl-card[data-platform=mac] .app-icon{filter:grayscale(.9) brightness(.62);box-shadow:0 20px 50px #0006,inset 0 1px 0 #ffffff30}
.dl-pane{text-align:center;animation:pane-in .55s var(--out)}
@keyframes pane-in{from{opacity:0;transform:translateY(8px);filter:blur(4px)}to{opacity:1;transform:none;filter:none}}
.dl-pane h2{font-size:23px;font-weight:600;letter-spacing:-.02em}
.dl-meta{display:flex;justify-content:center;align-items:center;gap:10px;font-size:12px;color:var(--muted);margin:10px 0 26px}
.dl-meta b{font-weight:500;color:var(--soft);font-variant-numeric:tabular-nums}
.dl-meta i{width:3px;height:3px;border-radius:50%;background:var(--line-3)}
.dl-button{width:100%;height:58px;border-radius:17px;font-size:15px}
.dl-button>span{display:inline-flex;align-items:center;gap:10px;transition:opacity .3s,transform .5s var(--spring)}
.dl-started{position:absolute;opacity:0;transform:translateY(12px)}
.dl-button.started .dl-label{opacity:0;transform:translateY(-12px)}
.dl-button.started .dl-started{opacity:1;transform:none}
.dl-button.is-soon{cursor:default;color:var(--muted)}
.dl-button.is-soon:hover{background:#ffffff06;border-color:var(--line-2);color:var(--muted)}
.dl-file{margin-top:14px;font:500 11px var(--mono);color:var(--dim);min-height:24px;display:flex;justify-content:center;align-items:center}
.dl-switch{display:inline-flex;align-items:center;gap:6px;font:500 12.5px var(--sans);color:var(--orange-2);padding:4px 6px;border-radius:8px}
.dl-switch .i{width:14px;height:14px;transition:transform .35s var(--spring)}
.dl-switch:hover .i{transform:translateX(3px)}

/* —— 三步上手 —— */
.steps-section{padding-top:110px}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.step{padding:12px}
.step-demo{position:relative;height:240px;border-radius:19px;background:#151413 radial-gradient(#ffffff09 .7px,transparent .8px) 0 0/12px 12px;border:1px solid var(--line);overflow:hidden}
.step-copy{padding:24px 14px 16px}
.step-n{font:500 11px var(--mono);color:var(--orange);letter-spacing:1px}
.step-copy h3{font-size:19px;font-weight:600;letter-spacing:-.02em;margin-top:12px}
.step-copy p{font-size:13px;color:var(--muted);line-height:1.85;margin-top:10px}

.installer .win-title,.installer .win-body{position:absolute;left:9%;right:9%}
.installer .win-title{top:52px;height:30px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:#26241f;border:1px solid var(--line-2);border-bottom:0;border-radius:12px 12px 0 0;font-size:10.5px;color:var(--soft)}
.installer .win-title i{width:9px;height:9px;border-radius:2px;border:1.2px solid #77736a;position:relative}
.installer .win-body{top:82px;display:flex;align-items:center;gap:14px;padding:22px 18px;background:#1d1c19;border:1px solid var(--line-2);border-radius:0 0 12px 12px;box-shadow:0 20px 50px #0007}
.win-app{width:44px;height:44px;flex-shrink:0;border-radius:13px;display:grid;place-items:center;background:var(--accent);color:var(--on-accent);box-shadow:0 6px 16px #ff8c1830}
.win-app svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.win-text{flex:1;min-width:0}
.win-status{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:550;transition:color .3s}
.win-bar{display:block;height:4px;border-radius:4px;background:#ffffff10;margin:10px 0 8px;overflow:hidden}
.win-bar i{display:block;height:100%;width:var(--p,0%);background:var(--accent);border-radius:inherit}
.win-sub{font-size:10px;color:var(--muted)}
.installer.done .win-status{color:var(--ok)}
.installer.done .win-bar i{background:var(--ok)}

.menu .menu-bar{display:flex;gap:2px;padding:10px 12px;font-size:11px;color:var(--muted);background:#1d1c19;border-bottom:1px solid var(--line)}
.menu .menu-bar span{padding:3px 8px;border-radius:6px}
.menu .menu-bar .on{background:#ffffff10;color:var(--text)}
.menu-list{position:absolute;left:134px;top:44px;width:190px;list-style:none;margin:0;padding:6px;background:#252320;border:1px solid var(--line-2);border-radius:11px;box-shadow:0 20px 50px #0008}
.menu-list li{position:relative;z-index:1;display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--soft);padding:0 10px;height:30px;border-radius:7px;transition:color .2s}
.menu-list li.sep{height:1px;padding:0;margin:4px 6px;background:var(--line-2)}
.menu-list li.hd{color:var(--text);font-weight:500}
.menu-list li.hd .i{width:14px;height:14px;color:var(--orange);transition:color .2s}
.menu-list li.active{color:var(--on-accent)}
.menu-list li.active .i{color:var(--on-accent)}
.menu-hover{position:absolute;z-index:0;left:6px;right:6px;top:6px;height:30px;border-radius:7px;background:#ffffff0c;transform:translateY(var(--y,0px));transition:transform .4s var(--out),background .3s}
.menu.picked .menu-hover{background:var(--accent)}
.menu-toast{position:absolute;right:14px;bottom:14px;display:flex;align-items:center;gap:7px;font-size:10.5px;color:var(--soft);padding:8px 11px;border-radius:11px;background:#262420f2;border:1px solid var(--line-2);box-shadow:0 10px 30px #0007;opacity:0;transform:translateY(10px) scale(.95);transition:opacity .3s,transform .5s var(--spring)}
.menu-toast .i{width:13px;height:13px;color:var(--ok)}
.menu.opened .menu-toast{opacity:1;transform:none}

.login{display:flex;flex-direction:column;align-items:center;background:radial-gradient(ellipse 260px 160px at 50% -20px,#ff8c2414,transparent 70%),linear-gradient(145deg,#23221f,#1b1b1a)}
.lg-head{font-size:12px;font-weight:550;margin-top:24px}
.lg-qr{position:relative;width:118px;height:118px;margin-top:16px;padding:8px;border-radius:15px;background:#fff;overflow:hidden}
.lg-skeleton{display:block;width:100%;height:100%;border-radius:8px;background:linear-gradient(100deg,#f0eeeb 20%,#fff 45%,#f0eeeb 70%);background-size:220% 100%;animation:shimmer 1.6s infinite}
@keyframes shimmer{to{background-position:-220% 0}}
.lg-cover,.lg-ok{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;opacity:0;transition:opacity .35s}
.lg-cover{background:#ffffffed;font-size:11px;color:#35332f;line-height:1.5}
.lg-cover small{font-size:9.5px;color:#77736a}
.lg-ok{background:#fff}
.lg-ok .i{width:40px;height:40px;padding:9px;border-radius:50%;color:#fff;background:#18d85c;stroke-width:2.4;transform:scale(.4);transition:transform .5s var(--spring)}
.login.s-scan .lg-cover{opacity:1}
.login.s-ok .lg-ok{opacity:1}.login.s-ok .lg-ok .i{transform:scale(1)}
.lg-status{display:flex;align-items:center;gap:6px;font-size:10px;color:var(--muted);margin-top:16px}
.lg-status i{width:5px;height:5px;border-radius:50%;background:#b8aa8c;animation:live 1.8s infinite}
.login.s-ok .lg-status i{animation:none;background:var(--ok)}
@keyframes live{50%{opacity:.3}}

.smartscreen{display:flex;gap:16px;align-items:flex-start;margin-top:16px;padding:22px 26px;border-radius:22px;border:1px solid var(--line);background:#ffffff03;transition:border-color .5s,background .5s,box-shadow .5s}
.smartscreen.flash{border-color:#ff8d3566;background:#ff8d350a;box-shadow:0 0 0 4px #ff8d350d}
.ss-icon{width:40px;height:40px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;background:#ff8d3514;color:var(--orange)}
.ss-icon .i{width:19px;height:19px}
.smartscreen b{font-size:14px;font-weight:550}
.smartscreen p{font-size:13px;color:var(--muted);line-height:1.85;margin-top:6px}
kbd{font:500 11.5px var(--sans);padding:2px 8px;border-radius:7px;background:#ffffff0c;border:1px solid var(--line-2);color:var(--soft)}

/* —— 系统要求 —— */
.reqs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.req{padding:24px 24px 26px;border-radius:22px}
.req h3{font-size:16px;font-weight:600;letter-spacing:-.01em;margin-top:24px}
.req p{font-size:12.5px;color:var(--muted);line-height:1.7;margin-top:6px}

/* —— 扩展与 Web —— */
.more-section{padding-top:40px}
.more{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.more-card{display:flex;flex-direction:column;padding:42px;border-radius:30px;min-height:360px}
.more-card h3{font-size:clamp(26px,2.6vw,34px);line-height:1.25;letter-spacing:-.04em;font-weight:600;margin-top:22px}
.more-card p{font-size:14px;color:var(--muted);line-height:1.9;margin-top:16px;max-width:460px}
.browsers{display:flex;gap:8px;margin-top:auto;padding-top:30px}
.browsers span{font-size:12px;padding:8px 14px;border-radius:11px;background:#ffffff05;border:1px solid var(--line-2);color:var(--soft)}
.more-card.soon{background:linear-gradient(145deg,#1d1c1a,#171716);border-style:dashed;border-color:var(--line-2)}
.soon-line{display:flex;align-items:center;gap:9px;margin-top:auto;padding-top:30px;font-size:12.5px;color:var(--muted)}
.soon-dot{width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px var(--orange);animation:live 2s infinite}

/* —— FAQ —— */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:72px;align-items:start}
.faq-wrap .section-head{position:sticky;top:120px;margin:0}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:26px 4px;font-size:16px;font-weight:500;transition:color .25s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--orange-2)}
.faq summary i{position:relative;width:14px;height:14px;flex-shrink:0}
.faq summary i::before,.faq summary i::after{content:'';position:absolute;left:0;right:0;top:50%;height:1.5px;margin-top:-.75px;border-radius:2px;background:currentColor;transition:transform .45s var(--spring)}
.faq summary i::after{transform:rotate(90deg)}
.faq details[open] summary i::after{transform:rotate(0)}
.faq details>div{overflow:hidden}
.faq details p{font-size:14px;color:var(--muted);line-height:1.95;padding:0 4px 26px;max-width:580px}
.faq details[open]>div{animation:faq-in .5s var(--out)}
@keyframes faq-in{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

@media(max-width:1080px){
  .dl-grid{grid-template-columns:1fr;gap:56px}
  .dl-card{max-width:520px}
  .reqs{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:900px){
  .steps{grid-template-columns:1fr}
  .more{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:20px}
  .faq-wrap .section-head{position:static}
}
@media(max-width:640px){
  .dl-hero{padding-top:128px}
  .dl-card{padding:22px}
  .reqs{grid-template-columns:1fr 1fr}
  .more-card{padding:30px 26px}
}