/* Shared type, controls and gentle feedback. Original capture geometry is kept. */
:root{--muted:#5e6d83;--line:#dee6f0;--surface:#fff;--shadow-soft:0 14px 38px #25406a09;--radius-card:24px}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;text-rendering:optimizeLegibility}
h1,h2,h3{font-weight:650;letter-spacing:-.03em}
html[lang|=zh] h1,html[lang|=zh] h2,html[lang|=zh] h3{letter-spacing:-.015em}
button,a,summary{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid #3678e4;outline-offset:4px;border-radius:5px}
a,button,summary{transition:color .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .22s ease,transform .18s ease}
.site-header{background:#f5f7fae8;border-bottom-color:#e3e9f280;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px)}
.site-header.scrolled{background:#f8fafeed;border-color:#dce5f0;box-shadow:0 5px 22px #26477606}
.primary-nav{font-size:14px;font-weight:550;gap:28px}
.primary-nav a{position:relative;padding-block:10px}
.primary-nav a::after{content:"";position:absolute;bottom:3px;left:0;width:100%;height:2px;background:var(--blue);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.primary-nav a[aria-current=page]{color:var(--blue-deep)}
.primary-nav a[aria-current=page]::after{transform:scaleX(1)}
.brand{transition:opacity .18s ease}.brand:hover{opacity:.8}
.brand img{box-shadow:0 5px 16px #3158a01c}
.language-menu summary{min-height:44px}
.language-menu summary .icon:last-child{transition:transform .2s ease}
.language-menu[open] summary .icon:last-child{transform:rotate(180deg)}
.language-options{border-color:#dce5f2;box-shadow:0 15px 42px #233c611a;padding:7px}
.language-options a{min-height:43px;display:flex;align-items:center;font-size:14px}
.language-options .language-system-option{display:flex;flex-direction:column;align-items:flex-start;gap:2px;width:100%;min-height:58px;margin:0 0 5px;padding:9px 12px;border:0;border-bottom:1px solid #e1e8f3;border-radius:7px;background:transparent;text-align:left;font-size:14px;line-height:1.6;color:inherit;cursor:pointer}
.language-system-option small{font-size:12px;line-height:1.6;color:#6b7f9b}
.language-options .language-system-option[aria-pressed=true]{background:#edf3ff;color:var(--blue-deep)}
.language-options .language-system-option:hover{background:#edf3ff}
.button{min-height:54px;border-radius:13px;box-shadow:0 8px 22px #4b89f326;letter-spacing:0}
.button-small{min-height:44px;font-size:13px}
.button-secondary{box-shadow:0 3px 12px #26467405}
.button[aria-current=page]{background:var(--blue-deep)}
.button:active{transform:translateY(0) scale(.985)}
.button[aria-disabled=true]{cursor:progress;transform:none;box-shadow:none}
.text-link,.hero-actions .text-link{font-size:14px;line-height:1.7}
.text-link>span,.text-link>.icon{transition:transform .2s ease}
.text-link:active{opacity:.72}
.kicker,.eyebrow{font-size:12px;font-weight:550;line-height:1.7}
.page-intro{padding-block:56px 34px}
.page-intro h1{font-size:clamp(38px,4.5vw,56px);line-height:1.2;max-width:900px;margin-bottom:23px}
.page-intro>p:last-child{font-size:16px;line-height:1.9;max-width:750px}
.hero h1,html[lang=en] .hero h1{font-size:clamp(44px,5.2vw,70px);line-height:1.13;letter-spacing:-.04em}
html[lang|=zh] .hero h1{letter-spacing:-.025em}
.hero-lead{font-size:16px;line-height:1.95;max-width:570px}
.hero-note{font-size:12px;line-height:1.8}
.hero-gallery figcaption{font-size:12px;color:#596d8a}
.capture-stamp{font-size:12px}.capture-stamp small{font-size:12px;line-height:1.7}
.section{padding-block:96px}
.section-heading{gap:44px;margin-bottom:34px}
.section-heading h2{font-size:clamp(32px,3.5vw,44px);line-height:1.25}
.section-heading>p{font-size:16px;line-height:1.85;max-width:380px}
.product-strip strong{font-size:14px}.product-strip small{font-size:12px;line-height:1.8}
.actual-tabs{background:#eaf0f8;border-color:#dce5f1;padding:6px;border-radius:16px}
.actual-tabs a{min-height:46px;font-size:14px;border-radius:11px;color:#5c708c}
.actual-tabs [aria-selected=true]{box-shadow:0 4px 15px #315e9e10;color:var(--blue-deep)}
.actual-copy h3{font-size:clamp(29px,2.7vw,36px);line-height:1.35;margin-bottom:22px}
.actual-copy>p{font-size:16px;line-height:1.85;margin-bottom:25px}
.actual-copy li{font-size:15px;line-height:1.85;margin-bottom:13px;color:#5e6e85}
.actual-copy .section-number{font-size:12px;line-height:1.9;letter-spacing:.05em;color:#71829a}
.capture-stage-caption{font-size:12px;color:#647792;line-height:1.8}
.capture-disclaimer,.fine-print{font-size:12px;line-height:1.95;color:#68788e}
.module-grid{gap:22px}
.module-card{border-color:#e0e7f1;border-radius:22px;padding:28px;box-shadow:var(--shadow-soft);transition:border-color .2s,box-shadow .22s,transform .22s}
.module-card h3{font-size:21px;line-height:1.45;letter-spacing:-.02em}
.module-card>p{font-size:16px;line-height:1.85;min-height:90px;color:#60718b}
.module-card summary{min-height:44px;font-size:14px;line-height:1.7}
.module-card li{font-size:15px;line-height:1.85}
.module-platform{font-size:12px;line-height:1.85}
.module-card details[open] summary{color:var(--blue-deep)}
.platform-card{border-color:#dee6f1;border-radius:24px;box-shadow:var(--shadow-soft);transition:border-color .2s,box-shadow .22s,transform .22s}
.platform-card>p{font-size:16px;line-height:1.85;min-height:88px}
.platform-card>small{font-size:12px;line-height:1.9}
.comparison-table table{font-size:14px}.comparison-table caption{font-size:16px}
.comparison-table th,.comparison-table td{font-size:15px;line-height:1.85;padding:19px 18px}
.connection-copy>p:not(.kicker),.privacy-section>div>p:not(.kicker){font-size:16px;line-height:1.85}
.connection-map>p{font-size:12px;line-height:1.9}.connection-end strong,.map-nas strong{font-size:13px}.connection-end small{font-size:12px}
.closing-cta{padding-block:34px;border-color:#dce5f2}.closing-cta p{font-size:15px}
.download-lead{font-size:16px}.download-hero h1{font-size:clamp(36px,4vw,54px);line-height:1.2}
.download-content .download-platform-description{font-size:16px;line-height:1.85;min-height:60px}
.download-platform-head>div>p{font-size:12px}
.download-content .release-status,.download-content .store-status{font-size:13px;min-height:45px}
.download-primary{font-size:16px;min-height:55px}
.download-facts dt{font-size:13px}.download-facts dd{font-size:15px;line-height:1.8}
.download-integrity summary{font-size:14px;min-height:48px}.download-integrity dt{font-size:12px}.download-integrity dd{font-size:14px}.download-integrity code{font-size:13px;line-height:1.8}
.download-content .store-version-note,.download-card-support{font-size:13px;line-height:1.85}
.download-setup h3{font-size:17px}.download-setup li p,.download-help p{font-size:16px;line-height:1.85}
.download-step-number{font-size:12px}.download-help-actions>.button,.download-help-actions>.text-link{font-size:14px}
.download-help-actions{flex-wrap:wrap;max-width:100%;row-gap:12px}
.download-feedback{font-size:14px;line-height:1.8;text-align:left;padding:13px 15px;border:1px solid #d9e7fb;border-radius:11px;background:#eff5ff;color:#41628f;overflow-wrap:anywhere}
[data-download-state=error] .download-feedback{background:#fff6ed;border-color:#efdfcb;color:#886239}
.download-progress{display:block;width:100%;height:6px;border:0;border-radius:4px;overflow:hidden;accent-color:var(--blue);background:#e4ecf9}
.download-progress::-webkit-progress-bar{background:#e4ecf9;border-radius:4px}.download-progress::-webkit-progress-value{background:var(--blue);border-radius:4px}.download-progress::-moz-progress-bar{background:var(--blue);border-radius:4px}
.download-progress:indeterminate{appearance:none;-webkit-appearance:none;background:linear-gradient(90deg,#e4ecf9 0%,#c0d4f5 32%,#4b89f3 50%,#c0d4f5 68%,#e4ecf9 100%);background-size:220% 100%;animation:download-connecting 1.4s linear infinite}
.download-progress:indeterminate::-webkit-progress-bar{background:transparent}
.download-metrics{display:block;align-self:flex-end;color:#526f97;font-size:13px;line-height:1.7;font-variant-numeric:tabular-nums}
@keyframes download-connecting{from{background-position:120% 0}to{background-position:-120% 0}}
.site-footer{border-top-color:#dfe6ef}.footer-top>div>p{font-size:14px;line-height:1.9}.footer-top nav{gap:24px;font-size:14px}
.footer-top nav a{min-height:44px;display:flex;align-items:center}.footer-email{font-size:14px;min-height:44px}
.footer-bottom,.footer-bottom p{font-size:12px;line-height:1.85}.platform-credits{font-size:12px;line-height:1.85}
.reading-progress{position:fixed;inset:0 0 auto;height:3px;background:var(--blue);transform-origin:left;z-index:35;pointer-events:none}
.back-to-top{position:fixed;right:max(22px,env(safe-area-inset-right));bottom:max(22px,env(safe-area-inset-bottom));z-index:25;width:46px;height:46px;border:1px solid #ceddf0;border-radius:15px;display:grid;place-items:center;background:#fffffff2;backdrop-filter:blur(12px);color:#3c71bc;box-shadow:0 8px 28px #264a821c;cursor:pointer;font-size:23px;line-height:1;transition:background .18s,box-shadow .18s,transform .18s}
.back-to-top:active{transform:scale(.96)}
@media(hover:hover) and (pointer:fine){
  .primary-nav a:hover::after{transform:scaleX(1)}
  .button:hover{box-shadow:0 11px 26px #3778e934;transform:translateY(-2px)}
  .text-link:hover>span,.text-link:hover>.icon{transform:translate(2px,-2px)}
  .module-card:hover,.platform-card:hover{transform:translateY(-3px);border-color:#b8cef0;box-shadow:0 18px 42px #244a8210}
  .capture-device:hover{box-shadow:0 15px 40px #2b46792c,0 0 0 2px #b4d0fb}
  .back-to-top:hover{background:#edf4ff;box-shadow:0 10px 30px #264a822a;transform:translateY(-2px)}
}
@media(max-width:1000px){
  .module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .module-card{padding:25px}.module-card>p{min-height:90px}
  .section-heading{gap:30px}
}
@media(max-width:860px){
  .primary-nav a{padding:13px 14px;font-size:14px}.primary-nav a::after{display:none}
  .primary-nav a[aria-current=page]{background:#eef4ff;border-radius:8px}
  .actual-tabs a{font-size:14px}
  .hero-lead{max-width:600px}.actual-copy h3{font-size:32px}
  .download-content .download-platform-description{min-height:0}
}
@media(max-width:600px){
  .page-intro{padding-block:38px 25px}.page-intro h1{font-size:35px}.page-intro>p:last-child{font-size:16px;line-height:1.85}
  .nav-actions .button-small{min-height:40px;font-size:13px;padding:9px 12px;gap:7px}
  .hero h1,html[lang=en] .hero h1{font-size:clamp(42px,10.8vw,54px);line-height:1.18;letter-spacing:-.03em}
  .hero-lead{font-size:16px;line-height:1.85}.hero-note{font-size:12px}.hero-actions .button{min-height:50px;font-size:15px}
  .hero-gallery figcaption{font-size:12px}
  .section{padding-block:66px}.section-heading h2{font-size:32px;line-height:1.3}.section-heading>p{font-size:16px;line-height:1.85;margin-top:21px}
  .product-strip strong{font-size:14px}.product-strip small{font-size:12px}
  .actual-tabs{padding:5px;border-radius:13px}.actual-tabs a{font-size:13px;min-height:57px;gap:7px;padding:10px 2px}.actual-tabs a .icon{width:16px;height:16px}
  .actual-copy h3{font-size:29px;line-height:1.4}
  .capture-disclaimer,.fine-print{font-size:12px;line-height:1.85}
  .module-grid{grid-template-columns:1fr;gap:17px}.module-card{padding:25px;border-radius:20px}.module-card>p{min-height:0}.module-card h3{font-size:21px}
  .platform-card{padding:26px;border-radius:21px}.platform-card>p{min-height:0}
  .comparison-table th,.comparison-table td{padding:15px 9px}
  .connection-end{min-width:0;flex:0 1 30%}.connection-end strong,.connection-end small{overflow-wrap:anywhere}
  .connection-line{margin-inline:6px}.map-nas img{margin-inline:auto}
  .closing-cta{flex-direction:column;align-items:flex-start;gap:18px}.closing-cta>div{flex:none;width:100%}.closing-cta .button{margin:0}
  .closing-cta h2{font-size:20px}
  .download-lead{line-height:1.85}.download-primary{font-size:16px}
  .download-content .release-status,.download-content .store-status{font-size:13px;line-height:1.8}
  .download-setup h3{font-size:17px}
  .footer-top nav{font-size:13px;gap:18px}.footer-email{font-size:13px}
  .back-to-top{right:16px;bottom:max(18px,env(safe-area-inset-bottom));width:44px;height:44px;border-radius:14px}
}
@media(max-width:360px){.hero-actions{gap:18px}.hero-actions .button{padding-inline:15px}.actual-tabs a{font-size:12px}.section-heading h2{font-size:29px}.nav-actions .button-small{padding-inline:10px}.nav-actions{gap:7px}.nav-inner{gap:6px}}
.capability-comparison{margin-top:55px}
.comparison-heading h3{font-size:26px;margin-bottom:13px;line-height:1.35}
.comparison-heading>p{font-size:16px;line-height:1.85;max-width:760px;margin-bottom:22px}
.comparison-jumps{display:flex;flex-wrap:wrap;gap:9px}
.comparison-jumps a{display:inline-flex;align-items:center;min-height:42px;padding:8px 14px;border:1px solid #dce5f1;border-radius:999px;background:#f9fbfe;color:#4a6387;font-size:13px;line-height:1.7}
.comparison-jumps a:hover{background:#eaf2ff;border-color:#adc9f3;color:var(--blue-deep)}
.capability-comparison .comparison-table{margin-top:22px;border:1px solid #dce5f0;border-radius:18px;overflow:hidden;background:white}
.capability-comparison table{table-layout:fixed;width:100%;min-width:0}
.capability-comparison col.comparison-name{width:22%}
.capability-comparison col:not(.comparison-name){width:39%}
.capability-comparison .comparison-table th,.capability-comparison .comparison-table td{width:auto;padding:18px 22px;vertical-align:top;font-size:15px;line-height:1.85;overflow-wrap:anywhere}
.capability-comparison thead th{background:#f3f7fd;color:#465e80;font-weight:650}
.capability-comparison th[scope=row]{font-weight:600;color:#2f4059}
.capability-comparison td{color:#5c6f89}
.capability-comparison .comparison-group-label th{background:#eaf1fc;color:#315c99;font-weight:650;font-size:14px;padding-block:12px;letter-spacing:.03em}
.capability-comparison tbody{scroll-margin-block-start:16px}
.capability-comparison tbody tr:not(.comparison-group-label){transition:background-color .18s ease}
.capability-comparison tbody tr:not(.comparison-group-label):hover{background:#f7faff}
.capability-comparison tbody:last-child tr:last-child>*{border-bottom:0}
.capability-comparison>.fine-print{margin-top:20px;max-width:1000px}
@media(max-width:600px){
  .capability-comparison{margin-top:38px}.comparison-heading h3{font-size:23px}
  .comparison-jumps{gap:7px}.comparison-jumps a{padding:8px 11px}
  .capability-comparison .comparison-table{border-radius:13px;margin-top:18px}
  .capability-comparison table,.capability-comparison tbody,.capability-comparison tr,.capability-comparison th,.capability-comparison td{display:block}
  .capability-comparison colgroup{display:none}
  .capability-comparison thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
  .capability-comparison .comparison-table th,.capability-comparison .comparison-table td{font-size:15px;line-height:1.85;padding:16px 19px}
  .capability-comparison .comparison-table th[scope=row]{font-size:16px;padding-bottom:2px;border-bottom:0}
  .capability-comparison .comparison-table td{border-bottom:0;padding-block:11px 13px}
  .capability-comparison .comparison-table td:last-child{padding-top:2px;padding-bottom:20px;border-bottom:1px solid var(--line)}
  .capability-comparison td::before{content:attr(data-platform);display:block;color:#3866a5;font-size:12px;font-weight:650;letter-spacing:.025em;margin-bottom:4px}
  .capability-comparison .comparison-group-label th{font-size:14px;padding:13px 19px}
  .capability-comparison tbody{scroll-margin-block-start:8px}
}
/* Soft, isolated ripples behind the existing privacy shield and static rings. */
.privacy-graphic>.privacy-ripples{
  position:absolute;top:50%;left:50%;width:340px;height:340px;
  transform:translate(-50%,-50%);border-radius:50%;overflow:hidden;contain:paint;pointer-events:none;z-index:1
}
.privacy-ripples>span{
  position:absolute;top:50%;left:50%;width:190px;height:190px;border:1px solid #4b89f33b;border-radius:50%;
  box-shadow:0 0 12px #4b89f30a;opacity:0;transform:translate(-50%,-50%) scale(.88);
  animation:privacy-ripple 7.2s linear infinite
}
.privacy-ripples>span:nth-child(2){animation-delay:-2.4s}
.privacy-ripples>span:nth-child(3){animation-delay:-4.8s}
@keyframes privacy-ripple{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.88)}
  12%{opacity:.65}
  75%{opacity:.2}
  100%{opacity:0;transform:translate(-50%,-50%) scale(1.68)}
}
@media(prefers-reduced-motion:reduce){.privacy-ripples{display:none}}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .button:hover,.button:active,.module-card:hover,.platform-card:hover,.back-to-top:hover,.back-to-top:active,.text-link:hover>span,.text-link:hover>.icon{transform:none}
}
@media print{.reading-progress,.back-to-top{display:none!important}}