/* 独立本地样式：无框架、无外部字体或 CDN 依赖。 */
*{box-sizing:border-box;border:0 solid transparent}

button{background:transparent;color:inherit}

.ui-icon{display:inline-block;vertical-align:middle;flex-shrink:0}

button,input{font:inherit}

:root{--background:#fff;--foreground:#172c32;--popover:#fff;--muted-foreground:#65767a;--primary:#008b81;--accent:#00b5a4;--border:#e0e9e9}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;font-family:'Segoe UI','Microsoft YaHei',sans-serif;color:var(--foreground);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
button,a{-webkit-tap-highlight-color:transparent}
button{font:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible{outline:3px solid #007b72;outline-offset:5px}
h1,h2,h3,p{margin:0}
img{display:block;max-width:100%;height:auto}
.container{max-width:1240px;width:calc(100% - 80px);margin-inline:auto}

.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid #e8efef}
.nav-inner{height:82px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:750;white-space:nowrap;letter-spacing:-.5px}
.brand-mark{display:grid;place-items:center;width:39px;height:39px;background:#008d82;border-radius:10px;color:white}
.brand-cad{margin-left:4px;font-weight:700;color:#008d82}
.nav-inner nav{display:flex;align-items:center;gap:34px;font-size:15px;color:#4b5d61}
.nav-inner nav a{padding:28px 0;transition:color .2s}
.nav-inner nav a:hover{color:#008b81}

.download-button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:19px 25px;border-radius:7px;background:#008b81;color:white;font-weight:650;font-size:18px;box-shadow:0 7px 24px #008b8126;animation:breathe 3s ease-in-out infinite;transition:background .2s,transform .2s;white-space:nowrap}
.download-button:hover{background:#006f67;transform:translateY(-2px)}
.download-button.small{font-size:15px;padding:12px 23px;gap:8px}
.download-button:active{transform:translateY(0)}
@keyframes breathe{0%,100%{box-shadow:0 6px 20px #008b8122,0 0 0 0 #00b5a400}
50%{box-shadow:0 8px 28px #008b8138,0 0 0 6px #00b5a40c}
}

.hero{background:radial-gradient(ellipse at 81% 26%,#dff3ef 0,transparent 49%),linear-gradient(180deg,#f7fbfb,#f0f8f7);padding:68px 0 0;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:48px;align-items:center;min-height:425px;padding-bottom:62px}
.eyebrow{color:#3f6d69;font-size:14px;display:flex;align-items:center;gap:9px;margin-bottom:23px}
.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#00a994;flex-shrink:0}
h1{font-size:clamp(36px,3.3vw,48px);font-weight:750;line-height:1.38;letter-spacing:-1.6px;white-space:nowrap}
h1 span{color:#008b81}
.hero-description{color:#607477;font-size:16px;line-height:1.95;margin:21px 0}
.hero-formats{display:flex;gap:8px;margin-bottom:29px}
.hero-formats span{font-size:12px;line-height:25px;padding:0 10px;border:1px solid #cddfdd;border-radius:4px;color:#536d70;background:#ffffff75;letter-spacing:.5px}
.platform{font-size:12px;color:#6c8184;margin-top:16px;display:flex;align-items:center;gap:7px}
.platform span{padding-inline:4px}

.hero-visual{position:relative;min-width:0;margin-right:-16px}
.visual-label{display:flex;justify-content:space-between;font-size:12px;color:#52756f;padding:0 2px 13px}
.visual-label>span:first-child{display:flex;align-items:center;gap:7px}
.screenshot-button{padding:0;border:5px solid #253236;display:block;width:100%;border-radius:11px;position:relative;overflow:hidden;background:#000;box-shadow:0 28px 50px -18px #123c4152;text-align:left;transition:transform .3s}
.screenshot-button:hover{transform:translateY(-3px)}
.zoom-hint{position:absolute;bottom:33px;right:16px;display:flex;gap:7px;align-items:center;color:#dbeeee;background:#16302de6;border:1px solid #526b665c;border-radius:4px;font-size:12px;padding:7px 10px}
.visual-bottom{margin:18px 4px 0;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#5c7a77}
.visual-bottom>span{display:flex;align-items:center;gap:7px}
.file-tag{padding:4px 10px;border:1px solid #d1e6e1;border-radius:4px;background:#faffff80}
.file-tag>span{height:6px;width:6px;border-radius:50%;background:#008b81}

.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #dce8e6;padding:27px 0 30px}
.feature-strip>a{display:flex;gap:15px;align-items:center;padding:0 24px;border-right:1px solid #d8e5e3;transition:color .2s}
.feature-strip>a:first-child{padding-left:0}
.feature-strip>a:last-child{padding-right:0;border:0}
.feature-strip>a>.ui-icon:first-child{color:#008b81;flex-shrink:0}
.feature-strip>a>.ui-icon:last-child{margin-left:auto;color:#829995;flex-shrink:0}
.feature-strip h2{font-size:16px;font-weight:650;white-space:nowrap}
.feature-strip p{font-size:12px;color:#738683;margin-top:3px;white-space:nowrap}
.feature-strip a:hover{color:#008b81}

.section{padding-block:88px}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:35px;margin-bottom:38px}
.overline{font-size:12px;letter-spacing:1.5px;font-weight:650;color:#008b81;margin-bottom:13px}
.section-heading h2{font-size:32px;line-height:1.5;letter-spacing:-.7px;font-weight:700}
.section-heading h2 span{color:#6e8284}
.section-heading>p{font-size:16px;color:#6a7d80;line-height:1.9}
.measure-grid{display:grid;grid-template-columns:1.22fr 1fr;gap:62px;align-items:center}
.detail-screenshot{border:1px solid #dfe7e7;border-radius:10px;overflow:hidden;background:#151d21;box-shadow:0 8px 24px #18383d0b}
.detail-screenshot .measure-preview>img{aspect-ratio:auto;object-fit:contain}
.screenshot-caption{display:flex;align-items:center;gap:9px;color:#d2dddd;padding:14px 16px;font-size:12px;background:#242d30}
.screenshot-caption>span{margin-left:auto;color:#93a7a7}
.feature-icon{display:inline-flex;align-items:center;justify-content:center;height:48px;width:48px;color:#008b81;background:#e9f6f3;border-radius:10px;margin-bottom:18px}
.measure-copy h3,.view-cards h3{font-size:24px;font-weight:650;margin-bottom:12px}
.measure-copy>p,.view-cards article>p{font-size:16px;color:#6a7d80;line-height:1.9}
.measure-tags{display:grid;grid-template-columns:repeat(5,1fr);gap:13px 16px;margin:25px 0 27px}
.measure-tags span{display:flex;align-items:center;gap:5px;font-size:14px;white-space:nowrap}
.measure-tags .ui-icon{color:#008b81}
.text-link{font-size:14px;font-weight:600;color:#008b81;display:inline-flex;gap:8px;align-items:center}
.text-link:hover{text-decoration:underline}

.views-section{background:#f6f9f9;border-block:1px solid #edf1f1}
.view-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.view-cards article{border:1px solid #e1e9e9;border-radius:10px;background:white;padding:32px 34px}
.card-top{display:flex;align-items:center;justify-content:space-between}
.card-index{align-self:flex-start;font:12px 'Segoe UI',sans-serif;color:#8a9a9c;letter-spacing:1px}
.view-options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
.view-options>span{display:flex;gap:8px;align-items:center;padding:11px 12px;background:#f6f9f9;border:1px solid #edf1f1;border-radius:5px;font-size:14px;color:#526c6e}
.view-options .ui-icon{color:#769390}
.layer-summary{display:flex;align-items:center;gap:19px;padding:23px 20px;background:#f3f8f7;border:1px solid #e5edeb;border-radius:7px;margin-top:24px;min-height:105px;color:#008b81}
.layer-summary strong{display:block;font-size:15px;color:#405b5b}
.layer-summary span{display:block;font-size:13px;color:#778986;margin-top:4px}
.layer-summary>.ui-icon:last-child{margin-left:auto}

.conversion-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.conversion-grid>a{display:flex;gap:19px;align-items:center;border:1px solid #dfe8e7;border-radius:8px;padding:24px 22px;transition:background .2s,border-color .2s,transform .2s}
.conversion-grid>a:hover{border-color:#70b7ac;background:#f3faf8;transform:translateY(-2px)}
.format-file{display:grid;place-items:center;width:51px;height:59px;border:1px solid #aad5ce;background:#edf8f5;border-radius:5px;color:#008b81;font-size:12px;font-weight:700;flex-shrink:0}
.conversion-grid h3{font-size:19px;font-weight:650;white-space:nowrap}
.conversion-grid h3 span{font-size:15px;font-weight:400;color:#83918e;padding-inline:4px}
.conversion-grid p{color:#7a8a8a;font-size:12px;margin-top:6px}
.conversion-grid>a>.ui-icon{margin-left:auto;color:#8da39d;flex-shrink:0}
.conversion-note{font-size:12px;color:#889795;margin-top:23px}

.download-section{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:44px 48px;background:#163e3a;border-radius:12px;color:#fff;position:relative;margin-bottom:38px}
.download-section .overline{color:#78c9b9}
.download-section h2{font-size:30px;font-weight:650;letter-spacing:-.5px}
.download-section>div>p:last-child{font-size:14px;color:#a1bdb7;margin-top:13px}
.download-end{display:flex;flex-direction:column;align-items:center}
.download-end>p{display:flex;align-items:center;gap:6px}
.download-end .download-button{background:#0eb19b}
.footer{padding:0 0 34px;display:flex;justify-content:space-between;align-items:center;gap:24px;color:#7c8c8b;font-size:12px}
.footer-brand{display:flex;align-items:center;gap:8px}
.footer-brand strong{font-size:14px;color:#5a706c}
.footer-brand>span{margin-left:12px}
.footer-brand .ui-icon{color:#008b81}
.mobile-download{display:none}

.download-dialog{padding:32px!important;text-align:left;border-radius:14px!important}
.download-dialog .feature-icon{margin-bottom:0}
.dialog-title{font-size:23px!important;line-height:1.4!important;font-weight:650!important}
.dialog-description{font-size:15px!important;line-height:1.8!important}
.dialog-dismiss{border:0;background:#008b81;color:#fff;padding:12px;border-radius:6px;font-size:15px;margin-top:10px}
.image-dialog{max-width:min(1400px,95vw)!important;padding:0!important;gap:0!important;overflow:hidden;background:#202b2c!important;color:#fff!important}
.image-dialog-header{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;gap:16px}
.image-close{font-size:14px;border:1px solid #627673;border-radius:5px;padding:5px 12px}
.skip-link{position:fixed;top:-70px;left:12px;z-index:100;padding:10px 20px;background:#fff}
.skip-link:focus{top:12px}

@media(min-width:1500px){.hero{padding-top:83px}
.hero-grid{padding-bottom:78px;gap:55px}
.hero-visual{margin-right:-35px}
}

@media(max-width:1100px){.container{width:calc(100% - 48px)}
.nav-inner nav{gap:20px}
.hero-grid{gap:28px;grid-template-columns:1fr 1.1fr}
.hero-visual{margin-right:0}
h1{font-size:37px}
.hero-description{font-size:16px}
.feature-strip>a{padding-inline:14px;gap:10px}
.feature-strip h2{font-size:14px}
.feature-strip>a>.ui-icon:last-child{display:none}
.measure-grid{gap:30px}
.measure-tags{gap:11px 8px}
.conversion-grid>a{padding:20px 15px;gap:12px}
.conversion-grid h3{font-size:17px}
.section-heading h2{font-size:29px}
.footer{align-items:flex-start}
.footer-brand>span{display:none}
}

@media(max-width:800px){html{scroll-padding-top:116px}
.nav-inner{height:108px;flex-wrap:wrap;gap:0;align-content:center;justify-content:space-between}
.brand{font-size:20px}
.brand-mark{width:33px;height:33px}
.nav-inner>.download-button{padding:9px 17px;font-size:14px}
.nav-inner nav{order:3;width:100%;justify-content:space-between;gap:15px;margin-top:9px;overflow-x:auto}
.nav-inner nav a{padding:4px 0;font-size:14px;white-space:nowrap}
.hero{padding-top:40px}
.hero-grid{grid-template-columns:1fr;gap:35px;padding-bottom:33px}
.hero-copy{text-align:center}
.eyebrow,.hero-formats,.platform{justify-content:center}
.eyebrow{margin-bottom:17px}
h1{font-size:40px;line-height:1.35;white-space:normal;letter-spacing:-1px}
.hero-description{font-size:16px;margin:17px 0}
.hero-formats{margin-bottom:23px}
.hero-visual{width:100%;max-width:640px;margin:auto}
.feature-strip{grid-template-columns:1fr 1fr;gap:24px 0;padding-block:26px}
.feature-strip>a:nth-child(2){border-right:0}
.feature-strip>a:nth-child(3){padding-left:0}
.feature-strip p{white-space:normal}
.section{padding-block:56px}
.section-heading{display:block;margin-bottom:28px}
.section-heading>p{margin-top:14px}
.section-heading h2{font-size:28px}
.measure-grid{grid-template-columns:1fr;gap:28px}
.measure-copy>p br{display:none}
.measure-tags{max-width:430px}
.view-cards{grid-template-columns:1fr;gap:18px}
.view-cards article{padding:27px}
.conversion-grid{grid-template-columns:1fr 1fr;gap:12px}
.conversion-grid>a{gap:12px;padding:18px 14px}
.conversion-grid>a>.ui-icon{display:none}
.format-file{width:43px;height:51px}
.conversion-grid h3{font-size:16px}
.conversion-grid h3 span{padding:0;font-size:14px}
.download-section{padding:32px;flex-direction:column;align-items:flex-start;gap:26px;margin-bottom:28px}
.download-section h2{font-size:26px}
.download-end{align-items:flex-start}
.footer{display:block;padding-bottom:103px}
.footer>p{margin-top:13px}
.mobile-download{display:flex;position:fixed;z-index:25;bottom:0;left:0;right:0;align-items:center;justify-content:space-between;background:#fffffff5;backdrop-filter:blur(10px);border-top:1px solid #deebe8;padding:12px 24px calc(12px + env(safe-area-inset-bottom));box-shadow:0 -4px 20px #173c3708}
.mobile-download>span{font-size:16px;font-weight:650}
.mobile-download small{font-size:12px;font-weight:400;color:#768a85;display:block}
}

@media(max-width:420px){.container{width:calc(100% - 36px)}
h1{font-size:34px}
.download-button{font-size:16px;padding:17px 19px}
.feature-strip>a{gap:9px;padding-inline:11px}
.feature-strip>a>.ui-icon{width:23px}
.feature-strip h2{white-space:normal}
.section-heading h2{font-size:25px}
.conversion-grid{grid-template-columns:1fr}
.conversion-grid>a>.ui-icon{display:block}
.conversion-grid h3{font-size:19px}
.conversion-grid>a{padding:17px 20px}
.view-options{gap:8px}
.view-options>span{padding:9px 8px;gap:5px}
.view-cards article{padding:24px}
.download-section{padding:28px}
.download-section h2{font-size:25px}
.measure-copy h3,.view-cards h3{font-size:22px}
.measure-tags{gap:13px 7px}
.zoom-hint{bottom:19px;padding:4px 7px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*::before,*::after{animation:none!important;transition:none!important}
}



/* 原生弹窗：支持 Esc、焦点管理和背景遮罩。 */
dialog{border:1px solid #dce8e5;margin:auto;max-height:90vh;overflow:auto;box-shadow:0 20px 70px #102f3440}

dialog:not([open]){display:none}

dialog::backdrop{background:#102b3266;backdrop-filter:blur(4px)}

.download-dialog{width:min(390px,calc(100vw - 36px));background:#fff;color:#172c32}

.download-dialog[open]{display:grid;gap:16px}

.dialog-description{color:#65767a}

.image-dialog{width:min(1400px,95vw);border-radius:12px}

.image-dialog-header h2{font-size:16px;font-weight:600}

.image-dialog img{max-height:calc(90vh - 70px);width:100%;object-fit:contain}

html.modal-open{overflow:hidden}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}


/* 本地 WebP 图标与待提供的 Logo 占位。 */
.brand-placeholder{width:190px;height:40px;flex:0 0 190px}
.ui-icon{display:inline-block;object-fit:contain;max-width:none;vertical-align:middle;flex-shrink:0}
.icon-up-right{transform:rotate(-45deg)}
.download-button .ui-icon,.zoom-hint .ui-icon,.screenshot-caption .ui-icon,.download-end>p .ui-icon,.image-close .ui-icon{filter:brightness(0) invert(1)}
.feature-strip>a>.ui-icon:first-child{width:36px;height:36px}
.feature-icon{background:transparent;width:52px;height:52px}
.feature-icon>.ui-icon{width:44px;height:44px}
.layer-summary>.ui-icon:first-child{width:45px;height:45px}
.format-file{position:relative;background:transparent;border:0;width:56px;height:64px;padding:0}
.format-image{width:56px;height:64px;object-fit:contain}
.format-file>span{position:absolute;left:0;right:0;bottom:12px;text-align:center;color:white;font-size:10px;font-weight:700;text-shadow:0 1px 2px #006558}
.measure-preview{display:block;width:100%;padding:0;background:#000;cursor:default}
.measure-preview>img{display:block;width:100%;height:auto;aspect-ratio:auto;object-fit:contain}

.image-close{display:inline-flex;align-items:center;gap:8px}
.image-dialog img.ui-icon{max-height:none;width:14px;height:14px}
@media(max-width:800px){.brand-placeholder{width:160px;flex-basis:160px;height:33px}}
@media(max-width:420px){.feature-strip>a>.ui-icon:first-child{width:30px;height:30px}.brand-placeholder{width:130px;flex-basis:130px}}

/* Logo 与功能界面局部放大展示 */
.brand{flex:0 0 auto}
.brand-logo{display:block;width:40px;height:40px;object-fit:contain;border-radius:10px}
.detail-showcase{position:relative;width:100%;padding-bottom:95px;min-width:0}
.showcase-main{display:block;position:relative;width:100%;padding:0;border:3px solid #293f43;border-radius:10px;background:#0b1c21;overflow:hidden;box-shadow:0 18px 38px -22px #173e3970;cursor:default}
.image-crop{display:block;position:relative;width:100%;overflow:hidden;background:#080e13}
.image-crop>img{display:block;position:absolute;height:auto;max-width:none;max-height:none;object-fit:initial;pointer-events:none}
.focus-outline{position:absolute;display:block;border:2px solid #18ccbe;border-radius:4px;box-shadow:0 0 0 1px #ffffff25,0 0 16px #00cbbb30;pointer-events:none}
.detail-inset{position:absolute;right:-12px;bottom:0;display:block;width:84%;padding:0;border:2px solid #07a796;border-radius:8px;overflow:hidden;background:#263235;box-shadow:0 16px 35px -15px #153e3960;cursor:default;transition:transform .2s}

.inset-label{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 12px;background:#ecf8f4;text-align:left;font-size:12px;color:#2b635a}
.inset-label>span:last-child{font-size:11px;color:#008b81;white-space:nowrap}
.showcase-measure{padding-bottom:112px}
.showcase-measure .detail-inset{width:49%;right:-10px}
.showcase-measure .inset-label{display:block;font-size:12px}
.showcase-measure .inset-label>span:last-child{display:block;margin-top:3px}
.showcase-views{padding-bottom:103px}
.showcase-convert{padding-bottom:87px}
.hero-visual .visual-bottom{margin-top:15px}
.view-feature-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:58px;align-items:center}
.view-copy h3{font-size:24px;font-weight:650;margin:0 0 12px}
.view-copy>p{font-size:16px;line-height:1.9;color:#6a7d80}
.view-copy .view-options{margin-top:22px}
.layer-note{margin-top:28px;border-top:1px solid #dfe9e7;padding-top:24px;display:flex;gap:14px;align-items:center}
.layer-note h4{margin:0 0 5px;font-size:16px;font-weight:650;color:#2c5550}
.layer-note p{margin:0;font-size:14px;color:#718782;line-height:1.8}
.conversion-feature-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:42px;align-items:center}
.conversion-feature-grid .conversion-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.conversion-feature-grid .conversion-grid>a{padding:16px 13px;gap:9px}
.conversion-feature-grid .conversion-grid h3{font-size:16px}
.conversion-feature-grid .conversion-grid h3 span{font-size:13px;padding-inline:1px}
.conversion-feature-grid .conversion-grid p{font-size:11px}
.conversion-feature-grid .format-file{width:43px;height:51px}
.conversion-feature-grid .format-image{width:43px;height:51px}
.conversion-feature-grid .format-file>span{font-size:9px;bottom:10px}
.conversion-feature-grid .conversion-grid>a>.ui-icon{width:15px;height:15px}
.modal-image-viewport{position:relative;width:100%;margin:auto;overflow:hidden;background:#071015}
.modal-image-viewport>.modal-preview-image{display:block;width:100%;height:auto;max-height:calc(90vh - 72px);object-fit:contain}
.modal-image-viewport.is-cropped>.modal-preview-image{position:absolute;height:auto;max-width:none;max-height:none;object-fit:initial}
@media(max-width:1100px){
 .view-feature-grid{gap:32px;grid-template-columns:1.1fr 1fr}
 .conversion-feature-grid{grid-template-columns:1fr;gap:28px}
 .conversion-feature-grid .detail-showcase{max-width:780px;margin:auto}
 .conversion-feature-grid .conversion-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
 .detail-inset{right:0}
 .showcase-measure .detail-inset{right:0}
}
@media(max-width:800px){
 .brand-logo{width:33px;height:33px;border-radius:8px}
 .detail-showcase{padding-bottom:85px}
 .view-feature-grid{grid-template-columns:1fr;gap:32px}
 .showcase-measure{padding-bottom:115px}
 .showcase-measure .detail-inset{width:47%}
 .showcase-views{padding-bottom:98px}
 .showcase-convert{padding-bottom:87px}
 .view-copy h3{font-size:22px}
 .conversion-feature-grid .conversion-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .conversion-feature-grid .conversion-grid>a{padding:16px 14px}
}
@media(max-width:480px){
 .detail-showcase{padding-bottom:71px}
 .showcase-measure{padding-bottom:106px}
 .showcase-measure .detail-inset{width:55%}
 .inset-label{font-size:11px;padding:7px 9px;gap:6px}
 .inset-label>span:last-child{font-size:10px}
 .showcase-measure .inset-label{font-size:11px}
 .detail-inset{width:91%}
 .view-copy h3{font-size:21px}
 .conversion-feature-grid .conversion-grid{grid-template-columns:1fr}
 .conversion-feature-grid .conversion-grid>a{padding:16px 20px;gap:16px}
 .conversion-feature-grid .conversion-grid h3{font-size:19px}
 .conversion-feature-grid .conversion-grid p{font-size:12px}
}

/* 速度标签直接叠加在首屏图上，工具栏同排展示。 */
.speed-callout{position:absolute;top:21%;right:16px;display:flex;flex-direction:column;gap:6px;padding:15px 19px;border:1px solid #86e0cf;border-radius:10px;background:linear-gradient(135deg,#f3fffbed,#d9fff2f2);color:#07574e;box-shadow:0 8px 25px #0003;pointer-events:none}
.speed-kicker{font-size:11px;font-weight:600;letter-spacing:1px}
.speed-callout strong{font-size:32px;line-height:1.15;letter-spacing:1px;font-weight:800}
.speed-caption{font-size:11px;color:#347568}
.hero-benefits{flex-wrap:wrap}
.hero-benefits span{color:#096f64;background:#e9f7f2;border-color:#c2e4d9;font-weight:600}
.view-toolbar-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:28px;align-items:stretch}
.view-toolbar-row>.toolbar-panel:first-child{grid-column:1;grid-row:1}
.view-toolbar-row>.toolbar-panel:last-child{grid-column:2;grid-row:1}
.measure-download{font-size:16px;padding:16px 20px;gap:9px}
.toolbar-panel{min-width:0;border:1px solid #8bcbbd;border-radius:8px;overflow:hidden;background:#35363d}
.toolbar-panel .inset-label{height:38px;box-sizing:border-box;font-weight:600}
.toolbar-image-well{height:108px;display:flex;align-items:center;background:#35363d}
.inset-label>span:only-child{font-size:inherit;color:inherit;white-space:normal}
@media(max-width:800px){
 .view-toolbar-row{gap:12px;margin-top:24px}
 .toolbar-panel .inset-label{height:46px;font-size:11px;padding:7px 9px}
 .toolbar-image-well{height:72px}
 .speed-callout{right:12px;padding:12px 15px}
 .speed-callout strong{font-size:27px}
}
@media(max-width:480px){
 .speed-callout{right:10px;padding:9px 11px;gap:4px}
 .speed-callout strong{font-size:22px}
 .speed-kicker,.speed-caption{font-size:9px;letter-spacing:0}
 .toolbar-image-well{height:50px}
}

/* 首屏集中展示主图、下载入口与四项卖点。 */
.hero{padding-top:26px}
.hero-grid{min-height:0;padding-bottom:22px;gap:34px;grid-template-columns:.88fr 1.12fr}
.nav-inner{height:68px}
.hero-copy h1{font-size:clamp(34px,3.2vw,46px);line-height:1.3}
.hero-copy .eyebrow{margin-bottom:12px}
.hero-copy .hero-description{margin:16px 0 14px;line-height:1.8}
.hero-copy .hero-formats{margin-bottom:20px}
.hero-copy .download-button{padding:16px 24px}
.hero-copy .platform{margin-top:12px}
.hero-visual{margin-right:0}
.hero-main-only{padding-bottom:0}
.hero-main-only .showcase-main{border-width:3px}
.hero-visual .visual-label{padding-bottom:10px}
.hero-visual .visual-bottom{display:none}
.feature-strip{padding:21px 0 23px;grid-template-columns:repeat(4,minmax(0,1fr))}
.feature-strip>a{min-width:0;gap:10px;padding-inline:16px}
.feature-strip>a>div{min-width:0}
.feature-strip>a>.ui-icon:last-child{display:none}
.feature-strip p{white-space:normal}
.hd-toolbar-showcase{padding-bottom:113px}
.showcase-measure.hd-toolbar-showcase .detail-inset{width:94%;right:0}
.showcase-measure.hd-toolbar-showcase .inset-label{display:flex;font-size:12px}
.showcase-measure.hd-toolbar-showcase .inset-label>span:last-child{display:inline;margin:0}
.showcase-views.hd-toolbar-showcase .detail-inset{width:94%;right:0}
.showcase-convert .detail-inset{width:94%;right:0}
.showcase-convert{padding-bottom:116px}
.measurement-result{display:block;max-width:200px;width:100%;margin:18px 0;border:1px solid #57b9ab;border-radius:7px;overflow:hidden;padding:0;background:#172c30;cursor:default}
.measurement-result .inset-label{padding:6px 9px;font-size:11px;display:block}
.measurement-result .inset-label>span:only-child{display:block}
.layer-toolbar{display:block;width:100%;margin-top:18px;padding:0;border:1px solid #b0d6cd;border-radius:7px;overflow:hidden;background:#202e32;cursor:default}
.layer-toolbar .inset-label{padding:7px 10px}
.view-feature-grid{align-items:center}
.view-feature-grid .showcase-views{margin-top:0;padding-bottom:0}
@media(min-width:801px) and (max-height:720px){
 .nav-inner{height:64px}
 .hero{padding-top:18px}
 .hero-grid{padding-bottom:14px}
 .hero-copy h1{font-size:40px;line-height:1.25}
 .hero-copy .eyebrow{margin-bottom:10px}
 .hero-copy .hero-description{font-size:15px;line-height:1.75;margin:12px 0}
 .hero-copy .hero-formats{margin-bottom:14px}
 .hero-copy .download-button{padding:13px 22px;font-size:17px}
 .hero-copy .platform{margin-top:10px}
 .hero-visual{max-width:600px;width:100%;justify-self:end}
 .feature-strip{padding:16px 0 18px}
}
@media(max-width:1100px) and (min-width:801px){
 .hero-grid{gap:24px;grid-template-columns:1fr 1.08fr}
 .hero-copy h1{font-size:34px}
 .hero-copy .hero-description{font-size:15px}
 .feature-strip>a{gap:9px;padding-inline:12px}
 .feature-strip>a:first-child{padding-left:0}
 .feature-strip h2{font-size:14px;white-space:normal}
 .feature-strip p{white-space:normal}
}
@media(max-width:800px){
 .nav-inner{height:100px}
 .hero{display:flex;flex-direction:column;padding-top:22px;padding-bottom:26px}
 .hero-grid{display:contents}
 .hero-copy{order:0;width:calc(100% - 40px);margin:0 auto}
 .hero-copy h1{font-size:36px;line-height:1.3}
 .hero-copy .hero-description{font-size:15px;margin:14px 0;line-height:1.75}
 .hero-copy .hero-formats{margin-bottom:17px}
 .hero-copy .eyebrow{font-size:13px;margin-bottom:12px}
 .hero-copy .download-button{padding:15px 20px;font-size:16px}
 .hero-copy .platform{margin-top:10px}
 .feature-strip{order:1;margin-top:22px;padding:19px 0;gap:20px 0;border-bottom:1px solid #dce8e6;grid-template-columns:repeat(2,minmax(0,1fr))}
 .hero-visual{order:2;width:calc(100% - 40px);max-width:640px;margin:24px auto 0}
 .hero-main-only{padding-bottom:0}
 .hero-visual .visual-label{font-size:11px}
 .hd-toolbar-showcase{padding-bottom:96px}
 .view-feature-grid .showcase-views{margin-top:0}
 .showcase-convert{padding-bottom:100px}
 .measurement-result{max-width:190px}
}
@media(max-width:480px){
 .hero{padding-top:18px}
 .hero-copy h1{font-size:32px}
 .hero-copy .hero-description{font-size:14px;margin:12px 0}
 .feature-strip{margin-top:18px;padding:17px 0;gap:17px 0}
 .feature-strip h2{font-size:14px}
 .feature-strip p{font-size:12px}
 .hd-toolbar-showcase{padding-bottom:79px}
 .showcase-convert{padding-bottom:82px}
 .showcase-measure.hd-toolbar-showcase .inset-label{font-size:10px;gap:6px}
 .showcase-measure.hd-toolbar-showcase .inset-label>span:last-child{font-size:10px}
}

/* 版本信息、体验轮播与滚动下载条。 */
.release-info{display:flex;flex-wrap:wrap;gap:3px 13px;margin-top:15px;color:#899793;font-size:11px;line-height:1.8;font-weight:400}
.release-info>span{white-space:nowrap}
.release-info time{font:inherit}
.reviews-section{padding:6px 0 58px}
.reviews-section .section-heading{margin-bottom:26px}
.section-heading h2 .example-badge{display:inline-block;vertical-align:middle;margin-left:14px;padding:4px 9px;border:1px solid #dbe7e1;border-radius:5px;font-size:12px;line-height:1.4;font-weight:400;color:#78918a;letter-spacing:0}
.review-disclosure{font-size:11px;color:#86958e}
.reviews-carousel{--cards-visible:3;overflow:hidden;padding:5px 3px 12px;margin-inline:-3px}
.reviews-track{display:flex;gap:20px;transition:transform .65s ease}
.review-card{flex:0 0 calc((100% - (var(--cards-visible) - 1)*20px)/var(--cards-visible));min-width:0;padding:25px 22px;border:1px solid #dce8e3;border-radius:12px;background:linear-gradient(150deg,#f7fbf9,#fff 70%);box-shadow:0 5px 14px #1c493205;text-align:left;transition:border-color .2s}
.review-card:hover{border-color:#67bda7}
.review-person{display:flex;align-items:center;gap:10px;margin-bottom:22px;min-height:52px}
.review-person>img{width:48px;height:48px;border-radius:50%;object-fit:cover;flex-shrink:0}
.review-person strong{display:block;font-size:13px;font-weight:600}
.review-person>div>span{display:block;margin-top:2px;color:#879a93;font-size:11px}
.review-tag{margin-left:auto;font-size:10px;color:#4a8b79;white-space:nowrap}
.review-card h3{font-size:18px;font-weight:650;margin:0 0 12px}
.review-card>p{font-size:14px;line-height:1.9;color:#6e817a;margin:0;min-height:80px}
.review-link{display:flex;align-items:center;gap:7px;font-size:12px;color:#198370;margin-top:22px}
.review-progress{display:flex;justify-content:center;align-items:center;gap:7px;margin-top:15px;height:7px}
.review-progress span{display:block;width:7px;height:7px;border-radius:8px;background:#d7e4de;transition:width .3s,background .3s}
.review-progress span.active{width:24px;background:#159980}
.review-progress span[hidden]{display:none}
.copyright-footer{width:100%;min-height:0;background:#333;color:#bdbdbd;padding:10px 20px;text-align:center;font-size:14px;line-height:1.8}
.copyright-footer p{margin:0}
.copyright-footer span{margin-left:15px;white-space:nowrap}
.download-bar{position:fixed;left:50%;bottom:18px;z-index:45;width:min(calc(100% - 32px),720px);padding:10px 11px 10px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid #ffffffb8;border-radius:18px;color:#fff;background:#142b29ed;box-shadow:0 20px 48px #101b3147;backdrop-filter:blur(18px);transform:translate(-50%,140%);visibility:hidden;transition:transform .3s ease,visibility .3s}
.download-bar.visible{transform:translate(-50%,0);visibility:visible}
.download-bar-copy strong{display:block;font-size:14px}
.download-bar-copy span{display:block;color:#ffffffa6;font-size:12px}
.download-bar .download-button{min-height:42px;flex:0 0 auto}
.download-button{transform-origin:center;will-change:scale;animation:download-button-breathe 2s ease-in-out infinite}
@keyframes download-button-breathe{0%,100%{scale:.98}50%{scale:1.025}}
@media(max-width:1100px){
 .reviews-carousel{--cards-visible:2}
 .review-tag{font-size:10px}
}
@media(max-width:800px){
 .release-info{justify-content:center;margin-top:12px;gap:2px 12px}
 .reviews-section{padding-bottom:36px}
 .review-card{padding:22px 18px}
 .review-person{flex-wrap:wrap}
 .review-tag{margin-left:0}
}
@media(max-width:580px){
 .reviews-carousel{--cards-visible:1}
 .review-person{flex-wrap:nowrap}
 .review-tag{margin-left:auto}
 .review-card>p{min-height:0}
 .download-bar{bottom:calc(10px + env(safe-area-inset-bottom));padding-left:14px;gap:10px;border-radius:14px}
 .download-bar-copy span{display:none}
 .download-bar .download-button{font-size:13px;padding:11px 14px;gap:6px}
 .copyright-footer{font-size:12px}
}
@media(prefers-reduced-motion:reduce){
 .download-button{animation:none;scale:1;will-change:auto}
 .reviews-track{transition:none}
}

/* 紧凑版权栏、转换说明与六项导航。 */
.nav-inner nav{overflow-x:auto}
.conversion-copy{min-width:0}
.conversion-copy>h3{font-size:24px;font-weight:650;line-height:1.5;margin:0 0 12px}
.conversion-copy>p{font-size:16px;line-height:1.9;color:#6a7d80;margin:0 0 24px}
.review-person>div>.review-stars{color:#e9b63c;font-size:12px;letter-spacing:1px;margin-top:3px;white-space:nowrap}
.section-heading h2 .review-heading-stars{display:inline-block;font-size:15px;vertical-align:middle;margin-left:15px;letter-spacing:2px;white-space:nowrap}
.nav-inner nav{gap:24px;min-width:0}
.nav-inner nav a{white-space:nowrap;flex-shrink:0}
@media(min-width:801px) and (max-width:1100px){
 .nav-inner{gap:16px}
 .nav-inner nav{gap:13px;font-size:13px}
 .nav-inner>.brand{font-size:20px;gap:7px}
 .nav-inner>.download-button{font-size:13px;padding:10px 14px;gap:6px}
}
@media(max-width:800px){
 .nav-inner nav{gap:20px;justify-content:flex-start}
 .conversion-copy>h3{font-size:22px}
 .conversion-copy>p{font-size:15px}
}

/* 智芯下载站入口与公司备案信息。 */
html{scroll-padding-top:170px}
.portal-header{background:#fff;border-bottom:1px solid #edf1f1}
.portal-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px;padding-block:12px}
.portal-brand{display:block;flex:0 0 220px}
.portal-brand img{display:block;width:220px;height:auto}
.portal-tools{display:flex;align-items:center;justify-content:flex-end;gap:30px;min-width:0}
.portal-nav{display:flex;align-items:center;gap:26px;white-space:nowrap;font-size:15px;color:#4b5d61}
.portal-nav{padding-block:10px}
.portal-tools:hover .portal-nav{color:#008b81}
.portal-search{display:flex;align-items:stretch;width:280px;min-width:0;height:40px;border:1px solid #dce5e5;border-radius:6px;overflow:hidden;background:#f7f9f9}
.portal-tools:hover .portal-search{border-color:#008b81}
.portal-search-field{flex:1;min-width:0}
.portal-search-button{display:flex;align-items:center;justify-content:center;flex:0 0 64px;background:#e5eceb;color:#647874;font-size:14px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.copyright-footer{padding:22px 20px;font-size:13px;line-height:1.9;overflow-wrap:anywhere}
.copyright-footer p+p{margin-top:4px}
.copyright-footer .company-contact{display:flex;justify-content:center;flex-wrap:wrap;gap:2px 24px}
.copyright-footer .company-contact span{margin:0;white-space:normal}
.copyright-footer a:hover{text-decoration:underline;color:#fff}
.copyright-footer a:focus-visible{outline-color:#fff}
@media(max-width:900px){
 .portal-tools{gap:20px}
 .portal-nav{gap:18px}
 .portal-search{width:230px}
}
@media(max-width:800px){
 html{scroll-padding-top:240px}
 .portal-inner{flex-wrap:wrap;gap:12px;padding-block:14px}
 .portal-brand{flex-basis:188px}
 .portal-brand img{width:188px}
 .portal-tools{width:100%;justify-content:space-between;gap:16px}
 .portal-nav{gap:16px;font-size:14px}
 .portal-search{width:250px;flex:0 1 250px;height:36px}
 .portal-search-button{flex-basis:48px;font-size:12px}
 .copyright-footer{padding:18px 20px;font-size:12px}
}
@media(max-width:380px){
 .portal-tools{gap:10px}
 .portal-nav{gap:12px;font-size:13px}
 .portal-search-button{flex-basis:40px}
}