/* 下载页视觉与首页保持同一套浅蓝、白卡和轻立体语言。 */
:root{--download-blue:#2563eb;--download-blue-dark:#1d4ed8;--download-ink:#182335;--download-muted:#667085;--download-line:#e6edf5;--download-bg:#f5f8fc;--download-surface:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html.htm,body.htm{overflow:hidden}
body.stt-download{margin:0;min-width:0;overflow-x:hidden;background:var(--download-bg);color:var(--download-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
.stt-download a{text-decoration:none;color:inherit}
.stt-download button{font:inherit;cursor:pointer}
.stt-download img{display:block;max-width:100%}
.stt-download h1,.stt-download h2,.stt-download h3,.stt-download p,.stt-download figure{margin:0}
.download-shell{width:min(100% - 48px,1280px);margin-inline:auto}
.download-header{position:fixed;top:0;right:0;left:0;z-index:100;height:72px;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(230,237,245,.94);box-shadow:0 2px 14px rgba(74,91,160,.045);backdrop-filter:blur(16px)}
.download-header .download-shell{width:min(100%,1280px);padding-right:24px;padding-left:24px}
.download-header-inner{height:100%;display:flex;align-items:center;gap:18px}
.download-logo{width:118px;flex:none}
.download-logo img{width:118px;height:auto}
.download-nav{display:flex;min-width:0;flex:1 1 auto;align-items:center;justify-content:flex-end;gap:2px;margin-left:auto}
.download-nav a{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 10px;border-radius:10px;color:#475467;font-size:14px;font-weight:500;white-space:nowrap;transition:background .16s,color .16s}
.download-nav a:hover{background:#f0f3fa;color:var(--download-blue)}
.download-nav a.active{color:var(--download-blue);font-weight:600}
.download-nav a.active:after{content:"";position:absolute;bottom:0;left:12px;right:12px;height:3px;border-radius:999px;background:var(--download-blue)}
.download-nav .download-nav-search{width:clamp(156px,14vw,190px);height:42px;min-height:42px;justify-content:flex-start;gap:9px;margin-inline:8px;padding:0 13px;border:1px solid #bcd0fb;border-radius:12px;background:#eef4ff;color:var(--download-blue);font-size:14px;font-weight:400;overflow:hidden}
.download-nav .download-nav-search span:last-child{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.download-nav .download-nav-search:hover{border-color:var(--download-blue);background:#fff;color:var(--download-blue);box-shadow:0 0 0 3px rgba(37,99,235,.08)}
.download-search-icon{position:relative;display:block;flex:none;width:13px;height:13px;border:2px solid var(--download-blue);border-radius:50%}
.download-search-icon:after{content:"";position:absolute;right:-5px;bottom:-3px;width:6px;height:2px;border-radius:1px;background:var(--download-blue);transform:rotate(45deg)}
.download-account{display:flex;width:290px;min-width:290px;flex:0 0 290px;align-items:center;justify-content:flex-end;font-size:14px;color:#344054}
.download-account .tuichu{display:flex;align-items:center;gap:7px;white-space:nowrap}
.download-account .touxiang{width:40px;height:40px;object-fit:cover;border-radius:50%;background:#eef4ff}
.download-account .huiyuan1{width:20px;height:20px;object-fit:contain}
.download-account .tuichu1{display:none;width:100%;min-width:0;align-items:center;justify-content:flex-end;text-align:center}
.download-account .thename{display:block;max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.download-account .dl,.download-account .tcdl{min-height:40px;align-items:center;justify-content:center;padding:0 18px;border:0;border-radius:12px;background:#2563eb;color:#fff;font-size:14px;font-weight:500;box-shadow:none}
.download-account .dl:hover,.download-account .tcdl:hover{background:#1d4ed8}
.download-account .tcdl{display:none}
.download-account .tuichu1:hover .tuichu{display:none!important}
.download-account .tuichu1:hover .tcdl{display:inline-flex!important}
.download-menu-button{display:none}
.stt-download main{padding-top:72px}

.download-hero{position:relative;overflow:hidden;background:radial-gradient(circle at 75% 40%,rgba(145,199,255,.42),transparent 35%),linear-gradient(116deg,#f8fbff 7%,#edf6ff 52%,#d9ebff 100%)}
.download-hero:after{content:"";position:absolute;right:-8%;bottom:-40%;width:54%;height:82%;border-radius:50%;background:rgba(255,255,255,.24);filter:blur(26px);pointer-events:none}
.download-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.06fr) minmax(420px,.94fr);min-height:620px;align-items:center;gap:20px}
.download-hero-copy{padding:44px 0 56px}
.download-eyebrow{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;border:1px solid #d5e5fa;background:rgba(255,255,255,.75);color:var(--download-blue);font-size:13px;font-weight:650;letter-spacing:.025em}
.download-eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#3478f6;box-shadow:0 0 0 4px #e7f1ff}
.download-hero h1{margin-top:23px;color:var(--download-ink);font-size:clamp(36px,3.4vw,52px);font-weight:750;line-height:1.22;letter-spacing:-.045em}
.download-hero h1 span{color:var(--download-blue)}
.download-hero-intro{max-width:560px;margin-top:22px;color:#596b87;font-size:18px;line-height:1.8}
.download-hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:24px;color:var(--download-muted);font-size:14px}
.download-hero-meta span+span{border-left:1px solid #ceddf0;padding-left:16px}
.download-hero-meta strong{display:inline-block;margin-left:3px;padding:3px 10px;border-radius:7px;background:#fff2df;color:#a9620a;font-weight:650}
.download-hero-meta .download-hero-legal{display:inline-flex;align-items:center;gap:12px;border-left:0;padding-left:0}
.download-hero-legal a{color:var(--download-blue);font-weight:600}
.download-hero-legal a:hover{text-decoration:underline;text-underline-offset:3px}
.download-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.download-button{display:inline-flex;min-height:52px;align-items:center;justify-content:center;gap:22px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:650;transition:background .16s,color .16s,transform .16s,box-shadow .16s}
.download-button:hover{transform:translateY(-2px)}
.download-button-primary{background:linear-gradient(135deg,#2d70e8,#2563eb);color:#fff!important;box-shadow:0 8px 18px rgba(37,99,235,.18)}
.download-button-primary:hover{background:#1d4ed8;box-shadow:0 10px 22px rgba(37,99,235,.22)}
.download-button-secondary{border:1px solid #cbdcf3;background:rgba(255,255,255,.82);color:var(--download-blue)!important}
.download-button-secondary:hover{background:#fff;border-color:#a9c8f1}
.download-hero-miniapp{display:flex;align-items:center;gap:16px;width:max-content;max-width:100%;min-height:106px;margin-top:24px;padding:10px 20px 10px 10px;border:1px solid #d8e7f7;border-radius:18px;background:rgba(255,255,255,.9);box-shadow:0 8px 24px rgba(74,91,160,.08)}
.download-hero-miniapp>img{width:84px;height:84px;flex:none;object-fit:contain;border-radius:8px}
.download-hero-miniapp>div{display:flex;align-items:flex-start;flex-direction:column;gap:4px}
.download-hero-miniapp strong{font-size:16px;color:var(--download-ink)}
.download-hero-miniapp span{font-size:13px;color:var(--download-muted)}
.download-hero-miniapp a{margin-top:4px;color:var(--download-blue);font-size:13px;font-weight:600}
.download-hero-art{position:relative;height:100%;min-height:560px;display:flex;align-items:center;justify-content:center}
.download-hero-halo{position:absolute;width:min(40vw,480px);aspect-ratio:1;border:1px solid rgba(255,255,255,.8);border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.65),rgba(140,189,255,.11) 64%,transparent 68%);box-shadow:0 0 0 50px rgba(255,255,255,.1)}
.download-hero-art img{position:relative;z-index:1;width:min(100%,475px);height:585px;object-fit:contain;filter:drop-shadow(0 25px 34px rgba(38,96,180,.14))}

.download-highlights{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:-34px;padding:22px 12px;border:1px solid var(--download-line);border-radius:22px;background:#fff;box-shadow:0 12px 34px rgba(74,91,160,.09)}
.download-highlights>div{display:grid;grid-template-columns:40px minmax(0,1fr);grid-template-rows:auto auto;column-gap:12px;align-items:center;padding:4px 18px}
.download-highlights>div+div{border-left:1px solid var(--download-line)}
.download-highlights span{grid-row:1/3;display:grid;place-items:center;width:40px;height:40px;border-radius:13px;background:#eef4ff;color:var(--download-blue);font-size:12px;font-weight:750}
.download-highlights strong{font-size:16px;font-weight:650}
.download-highlights small{margin-top:3px;color:var(--download-muted);font-size:12px;line-height:1.5}

.download-experience{width:min(100% - 48px,1200px);padding-top:106px;padding-bottom:108px}
.download-section-heading>span{display:block;color:var(--download-blue);font-size:14px;font-weight:700;letter-spacing:.08em}
.download-section-heading h2{margin-top:12px;font-size:clamp(30px,2.8vw,42px);font-weight:650;line-height:1.28;letter-spacing:-.035em}
.download-section-heading p{margin-top:14px;color:var(--download-muted);font-size:16px;line-height:1.75}
.download-experience-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.72fr);align-items:start;gap:56px}
.download-experience-copy{min-width:0}
.download-experience-copy .download-feature-list{margin-top:30px}
.download-feature-list{display:grid;gap:0;border-top:1px solid var(--download-line)}
.download-feature{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--download-line)}
.download-feature b{display:grid;flex:none;place-items:center;width:30px;height:30px;margin-top:2px;border-radius:50%;background:#e9f8f3;color:#147d70;font-size:16px}
.download-feature h3{font-size:18px;font-weight:650;line-height:1.5}
.download-feature p{margin-top:6px;color:var(--download-muted);font-size:15px;line-height:1.65}
.download-screen-showcase{position:relative;isolation:isolate;display:flex;min-height:560px;align-items:center;justify-content:center;flex-direction:column;padding:18px 20px 22px;overflow:hidden}
.download-screen-showcase:before{content:"";position:absolute;z-index:-2;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,#fff 0,rgba(221,238,255,.94) 46%,rgba(238,246,255,.58) 68%,transparent 72%)}
.download-screen-showcase:after{content:"";position:absolute;z-index:-1;width:286px;height:410px;border:1px solid rgba(203,220,243,.9);border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.86),rgba(238,246,255,.62));box-shadow:0 16px 38px rgba(74,91,160,.06);transform:translate(46px,-2px) rotate(5deg)}
.download-screen-frame{position:relative;z-index:2;width:236px;height:512px;overflow:hidden;border:8px solid #1d345e;border-radius:34px;background:#fff;box-shadow:0 18px 38px rgba(25,68,131,.17),inset 0 0 0 2px rgba(255,255,255,.3)}
.download-screen-frame:after{content:"";position:absolute;top:0;left:50%;width:84px;height:15px;border-radius:0 0 11px 11px;background:#1d345e;transform:translateX(-50%)}
.download-screen-frame img{width:100%;height:100%;object-fit:cover;object-position:top}
.download-screen-showcase figcaption{position:relative;z-index:2;margin-top:12px;padding:5px 10px;border:1px solid rgba(215,225,238,.9);border-radius:999px;background:rgba(255,255,255,.84);color:#667085;font-size:12px;backdrop-filter:blur(8px)}

.download-channels{padding:90px 0 78px;background:linear-gradient(180deg,#ecf5ff 0,#f5f8fc 78%)}
.download-section-heading-center{text-align:center}
.download-channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
.download-channel-card{min-width:0;overflow:hidden;border:1px solid var(--download-line);border-radius:20px;background:#fff;box-shadow:0 4px 16px rgba(74,91,160,.06);transition:transform .18s,box-shadow .18s}
.download-channel-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(74,91,160,.1)}
.download-channel-art{width:100%;height:190px;object-fit:cover;object-position:center}
.download-channel-content{display:flex;min-height:250px;flex-direction:column;align-items:flex-start;padding:22px 24px 24px}
.download-channel-tag{padding:5px 9px;border-radius:6px;background:#eef4ff;color:var(--download-blue);font-size:12px;font-weight:650}
.download-channel-content h3{margin-top:14px;font-size:23px;font-weight:700}
.download-channel-content p{margin-top:8px;color:var(--download-muted);font-size:14px;line-height:1.65}
.download-channel-action{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:16px;margin-top:auto;padding:0 17px;border-radius:12px;background:#f0f3fa;color:var(--download-blue)!important;font-size:14px;font-weight:650;transition:background .16s}
.download-channel-action:hover{background:#e1ebfc}
.download-miniapp-row{display:flex;width:100%;align-items:flex-end;justify-content:space-between;gap:12px;margin-top:auto}
.download-miniapp-row>img{width:78px;height:78px;object-fit:contain}
.download-miniapp-row .download-channel-action{margin-top:0}
.download-info-line{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 24px;margin-top:28px;color:#667085;font-size:13px;line-height:1.7}
.download-info-line a{color:var(--download-blue)}

.download-footer{border-top:1px solid var(--download-line);background:#fff}
.download-footer-top{display:grid;grid-template-columns:1.45fr 1fr 1.35fr .7fr;gap:36px;padding:50px 0 40px}
.download-footer-top>div{display:flex;align-items:flex-start;flex-direction:column;gap:10px}
.download-footer-logo{width:124px;height:auto}
.download-footer-top p,.download-footer-top span,.download-footer-top a{color:var(--download-muted);font-size:13px;line-height:1.6}
.download-footer-top strong{margin-bottom:6px;font-size:15px}
.download-footer-top a:hover,.download-footer-bottom a:hover{color:var(--download-blue)}
.download-footer-qr{width:92px;height:92px;object-fit:contain}
.download-footer-bottom{padding:22px 0 30px;border-top:1px solid var(--download-line);color:#8791a3;font-size:12px;line-height:1.7;text-align:center}
.download-footer-bottom p+p{margin-top:8px}
.download-footer-bottom p:last-child{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 17px;margin-top:14px}

.zhezhao{display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.8)}
.denglukuang,.denglukuang2{display:none}
.denglukuang2{position:fixed;z-index:1010;top:50%;left:50%;width:min(860px,calc(100vw - 32px));height:456px;overflow:hidden;border-radius:10px;background:#fff;box-shadow:0 16px 48px rgba(26,38,74,.18);transform:translate(-50%,-50%)}
.denglukuang2[style*="display: block"]{display:flex!important}
.guanbices{position:absolute;z-index:2;top:12px;right:12px;display:grid;place-items:center;width:38px;height:38px}
.guanbices img{width:30px;height:30px;object-fit:contain;filter:brightness(0) opacity(.62)}
.download-login-art{position:relative;display:flex;width:40%;align-items:center;flex-direction:column;padding:70px 18px 0;background:#0084ff;color:#fff;text-align:center}
.download-login-art strong{font-size:18px;font-weight:500}
.download-login-art ul{display:grid;gap:12px;margin:28px 0 0;padding:0;list-style:none;text-align:left;font-size:15px}
.download-login-art li{display:flex;align-items:center;gap:10px}
.download-login-art li:before{content:"";display:block;width:15px;height:15px;flex:none;background:url('https://cdn.shititong.cn/guanwang/images/dengluk/gou.png') center/contain no-repeat}
.download-login-wave{position:absolute;right:0;bottom:0;left:0;width:100%}
.download-login-body{display:flex;flex:1;align-items:center;flex-direction:column;padding:28px 26px 18px;text-align:center}
.download-login-body h2{color:#0084ff;font-size:22px;font-weight:400}
#qrcode1{display:grid;place-items:center;width:200px;height:200px;margin-top:15px}
#qrcode1 img{width:200px;height:200px}
.saomajieguo{min-height:20px;margin-top:4px;color:var(--download-muted);font-size:13px}
.download-login-methods{width:100%;max-width:400px;margin-top:10px;padding:6px 10px 8px;border-radius:10px;background:#efeeee;color:#182335}
.download-login-methods strong{font-size:15px;font-weight:600}
.download-login-methods>div{display:flex;justify-content:space-around;gap:8px;margin-top:8px}
.download-login-methods span{display:flex;align-items:center;gap:4px;font-size:16px;white-space:nowrap}
.download-login-methods img{width:25px;height:25px;object-fit:contain}

@media(max-width:1100px){.download-hero-grid{grid-template-columns:minmax(0,1fr) minmax(330px,.8fr)}.download-highlights>div{padding-inline:10px}.download-experience-grid{gap:40px}.download-miniapp-row{align-items:flex-start;flex-direction:column}}
@media(max-width:800px){.download-shell{width:min(100% - 36px,680px)}.download-header{height:64px}.download-header-inner{justify-content:space-between}.download-logo,.download-logo img{width:110px}.download-account{display:none}.download-menu-button{display:flex;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:0;border-radius:11px;background:#eef4ff}.download-menu-button span{width:18px;height:2px;border-radius:2px;background:var(--download-blue)}.download-nav{display:none;position:absolute;top:64px;right:0;left:0;margin:0;padding:12px 18px 20px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--download-line);background:#fff;box-shadow:0 16px 26px rgba(30,65,120,.08)}.download-nav.open{display:flex}.download-nav a{min-height:46px;padding:0 13px;font-size:15px}.download-nav .download-nav-search{width:auto;min-width:0;min-height:42px;margin:8px 0;padding-inline:13px}.download-nav a.active:after{right:auto;left:0;top:12px;bottom:12px;width:3px;height:auto}.download-hero-grid{grid-template-columns:1fr;gap:0}.download-hero-copy{padding:66px 0 10px}.download-hero-art{min-height:360px;height:380px}.download-hero-art img{height:400px;width:340px}.download-hero-halo{width:330px}.download-highlights{margin-top:-5px;grid-template-columns:repeat(2,minmax(0,1fr));gap:0}.download-highlights>div{padding:15px 12px}.download-highlights>div:nth-child(3){border-left:0}.download-highlights>div:nth-child(n+3){border-top:1px solid var(--download-line)}.download-experience{padding-block:78px}.download-experience-grid{grid-template-columns:1fr;gap:34px}.download-screen-showcase{min-height:590px}.download-channel-grid{grid-template-columns:1fr;max-width:520px;margin-inline:auto}.download-channel-card{display:grid;grid-template-columns:42% 58%}.download-channel-art{height:100%;min-height:225px}.download-channel-content{min-height:225px}.download-miniapp-row{flex-direction:row;align-items:flex-end}.download-help{align-items:flex-start;flex-direction:column}.download-footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}.download-channels{padding-block:70px}}
@media(max-width:520px){.download-shell{width:calc(100% - 32px)}.download-hero-copy{padding-top:46px}.download-eyebrow{font-size:11px}.download-hero h1{font-size:clamp(32px,8.2vw,40px);line-height:1.25}.download-hero-intro{margin-top:15px;font-size:15px;line-height:1.7}.download-hero-meta{gap:6px 10px;margin-top:17px;font-size:12px}.download-hero-meta span+span{padding-left:10px}.download-hero-actions{gap:10px;margin-top:24px}.download-button{min-height:48px;flex:1 1 100%;justify-content:space-between;padding-inline:19px;font-size:14px}.download-hero-art{min-height:300px;height:310px}.download-hero-art img{height:340px;width:285px}.download-hero-halo{width:275px}.download-highlights{padding:8px;border-radius:18px}.download-highlights>div{grid-template-columns:30px minmax(0,1fr);column-gap:7px;padding:12px 5px}.download-highlights span{width:30px;height:30px;border-radius:9px;font-size:10px}.download-highlights strong{font-size:13px}.download-highlights small{font-size:10px}.download-experience{padding-block:68px}.download-section-heading h2{font-size:30px}.download-section-heading p{font-size:14px}.download-feature{padding-block:17px}.download-feature h3{font-size:16px}.download-feature p{font-size:13px}.download-screen-showcase{min-height:565px;padding:20px}.download-screen-frame{width:235px;height:510px;border-width:8px}.download-channels{padding-block:63px}.download-channel-grid{gap:15px;margin-top:28px}.download-channel-card{display:block}.download-channel-art{height:145px;min-height:0}.download-channel-content{min-height:220px;padding:18px 20px 20px}.download-channel-content h3{font-size:20px}.download-miniapp-row{align-items:center}.download-miniapp-row>img{width:70px;height:70px}.download-info-line{justify-content:flex-start;gap:3px 13px;font-size:11px}.download-help{margin-top:28px;margin-bottom:45px;padding:24px 20px}.download-help h2{font-size:20px}.download-help-actions{justify-content:flex-start}.download-help-actions a,.download-help-actions button,.download-support-qr summary{font-size:12px}.qpxc-qr{right:20px}.download-footer-top{gap:25px;padding-block:36px}.download-footer-top>div:first-child{grid-column:1/-1}.download-footer-top strong{font-size:14px}.download-footer-top span,.download-footer-top a{word-break:break-word;font-size:12px}.download-footer-bottom{text-align:left}.download-footer-bottom p:last-child{justify-content:flex-start}.denglukuang2{min-height:0}.denglukuang2[style*="display: block"]{flex-direction:column}.download-login-art{width:100%;min-height:90px;gap:3px}.download-login-art strong{font-size:18px}.download-login-body{padding:24px}.download-login-body h2{font-size:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.stt-download *{transition:none!important}}

/* 与首页导航保持同一断点和移动端抽屉形式。 */
@media(max-width:1180px){
  .download-nav,.download-account{display:none!important}
  .download-header-inner{justify-content:space-between}
  .download-menu-button{display:flex;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:0;border-radius:12px;background:#f0f3fa}
  .download-menu-button span{width:18px;height:2px;border-radius:2px;background:var(--download-blue)}
  .download-mobile-menu{position:fixed;top:72px;right:0;left:0;height:calc(100vh - 72px);background:rgba(0,0,0,.7)}
  .download-mobile-menu nav{width:75%;height:100%;margin-left:auto;padding:20px;overflow-y:auto;border-left:1px solid #e6edf5;background:#fff;box-shadow:-18px 0 44px rgba(24,35,53,.14)}
  .download-mobile-menu a{display:block;min-height:48px;padding:12px 8px;border-bottom:1px solid #e6edf5;color:#475467;font-size:15px;font-weight:500}
  .download-mobile-menu a.active{color:var(--download-blue)}
}
@media(min-width:1181px){.download-mobile-menu{display:none!important}}
@media(min-width:768px) and (max-width:800px){.download-header{height:72px}.download-logo,.download-logo img{width:118px}.download-mobile-menu{top:72px;height:calc(100vh - 72px)}}
@media(max-width:800px){
  .download-hero-copy{padding:44px 0 30px}
  .download-hero-art{min-height:310px;height:310px}
  .download-hero-art img{height:320px}
  .download-screen-showcase{min-height:550px;padding:14px 0}
}
@media(max-width:767px){.download-header{height:64px}.download-header .download-shell{width:100%;padding-right:16px;padding-left:16px}.download-logo,.download-logo img{width:108px}.stt-download main{padding-top:64px}.download-mobile-menu{top:64px;height:calc(100vh - 64px)}}
@media(max-width:520px){
  .download-hero-copy{padding:26px 0 22px}
  .download-hero h1{margin-top:14px;font-size:clamp(30px,8vw,36px)}
  .download-hero-intro{margin-top:12px;font-size:14px;line-height:1.6}
  .download-hero-meta{margin-top:12px}
  .download-hero-actions{margin-top:18px}
  .download-hero-miniapp{width:100%;min-height:96px;gap:12px;margin-top:18px;padding:8px 12px 8px 8px;border-radius:16px}
  .download-hero-miniapp>img{width:78px;height:78px}
  .download-hero-miniapp strong{font-size:15px}
  .download-hero-miniapp span,.download-hero-miniapp a{font-size:12px}
  .download-hero-art{min-height:240px;height:240px}
  .download-hero-art img{height:260px;width:250px}
  .download-hero-halo{width:240px}
  .denglukuang2{height:auto;max-height:calc(100vh - 28px);overflow-y:auto}
  .denglukuang2[style*="display: block"]{flex-direction:column}
  .download-login-art{width:100%;min-height:76px;padding:20px 45px}
  .download-login-art ul,.download-login-wave{display:none}
  .download-login-body{padding:20px 15px}
  #qrcode1,#qrcode1 img{width:180px;height:180px}
  .download-login-methods span{font-size:12px}
  .download-login-methods img{width:22px;height:22px}
}

/* 2026-09-30：按首页网页规范收紧首屏与移动端信息层级。 */
.stt-download a:focus-visible,.stt-download button:focus-visible{outline:3px solid rgba(37,99,235,.24);outline-offset:3px}
.download-hero,.download-experience,.download-channels{scroll-margin-top:88px}
@media(min-width:1181px){
  .download-hero-grid{min-height:520px;grid-template-columns:minmax(0,1.08fr) minmax(390px,.92fr);gap:48px}
  .download-hero-copy{padding:26px 0 32px}
  .download-eyebrow{padding:6px 11px}
  .download-hero h1{margin-top:16px;font-size:clamp(38px,3vw,48px);line-height:1.18}
  .download-hero-intro{max-width:650px;margin-top:14px;font-size:16px;line-height:1.7}
  .download-hero-meta{margin-top:16px}
  .download-hero-utilities{display:flex;align-items:center;gap:14px;margin-top:22px}
  .download-hero-actions{flex:none;flex-wrap:nowrap;gap:8px;margin-top:0}
  .download-button{min-height:50px;gap:12px;padding-inline:16px;font-size:14px}
  .download-hero-miniapp{flex:none;min-height:76px;gap:10px;margin-top:0;padding:6px 12px 6px 6px;border-radius:16px}
  .download-hero-miniapp>img{width:64px;height:64px}
  .download-hero-miniapp>div{gap:2px}
  .download-hero-miniapp strong{font-size:14px}
  .download-hero-miniapp span{font-size:11px}
  .download-hero-miniapp a{margin-top:2px;font-size:12px}
  .download-hero-art{min-height:470px}
  .download-hero-art img{width:min(100%,410px);height:470px}
  .download-hero-halo{width:min(34vw,410px);box-shadow:0 0 0 38px rgba(255,255,255,.09)}
  .download-highlights{margin-top:-22px;padding-block:18px}
  .download-experience{padding-top:88px;padding-bottom:92px}
}
@media(min-width:801px) and (max-width:1180px){
  .download-hero-grid{min-height:540px;grid-template-columns:minmax(0,1.08fr) minmax(330px,.82fr);gap:26px}
  .download-hero-copy{padding:30px 0 36px}
  .download-hero h1{margin-top:17px;font-size:clamp(38px,4.2vw,46px);line-height:1.2}
  .download-hero-intro{max-width:600px;margin-top:14px;font-size:16px;line-height:1.7}
  .download-hero-meta{margin-top:16px}
  .download-hero-actions{margin-top:22px}
  .download-hero-miniapp{min-height:92px;margin-top:18px}
  .download-hero-miniapp>img{width:72px;height:72px}
  .download-hero-art{min-height:470px}
  .download-hero-art img{width:360px;height:450px}
  .download-hero-halo{width:360px}
  .download-highlights{margin-top:-22px;padding-block:18px}
}
@media(max-width:800px){
  .download-experience{padding-top:68px;padding-bottom:72px}
  .download-channels{padding-top:68px;padding-bottom:60px}
}
@media(max-width:520px){
  .stt-download-mobile .download-hero-art{display:none}
  .stt-download-mobile .download-hero-grid{min-height:auto}
  .stt-download-mobile .download-highlights{margin-top:16px}
  .download-screen-showcase{min-height:486px;padding:8px 0 10px}
  .download-screen-showcase:before{width:300px;height:300px}
  .download-screen-showcase:after{width:205px;height:330px;border-radius:20px;transform:translate(28px,-2px) rotate(4deg)}
  .download-screen-frame{width:208px;height:450px;border-width:7px;border-radius:30px}
  .download-screen-frame:after{width:74px;height:13px}
  .download-screen-showcase figcaption{margin-top:10px}
  .download-channel-content{min-height:204px}
}