/* Content-first responsive theme for hotaosp-zh.cloud */
:root{
    --brand:#B93A4A;--brand-soft:#D9828D;--ink:#2B2528;--text:#332D2F;--muted:#756B6E;
    --bg:#FFF9F7;--surface:#FFFFFF;--surface-2:#F6ECEB;--accent:#E45B4F;
    --line:#E8D9D7;--line-strong:#D9C4C1;--shadow:0 18px 42px rgba(43,37,40,.08);
    --radius:22px;--shell:1180px;
    --serif:"Songti SC","STSong",serif;
    --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.75;text-rendering:optimizeLegibility}
body.search-lock{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}
button,input{font:inherit}
button{cursor:pointer}
code{padding:.12em .4em;border-radius:6px;background:#f1e5e4;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.shell{width:min(calc(100% - 40px),var(--shell));margin-inline:auto}
.narrow{max-width:840px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.skip-link{position:fixed;left:18px;top:-80px;z-index:9999;padding:10px 16px;background:var(--ink);color:#fff;border-radius:10px;text-decoration:none}
.skip-link:focus{top:18px}
.site-header{position:sticky;top:0;z-index:100;border-bottom:1px solid rgba(232,217,215,.85);background:rgba(255,249,247,.96);backdrop-filter:saturate(140%) blur(12px)}
.header-inner{min-height:74px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:.03em;text-decoration:none}
.brand img{width:42px;height:42px;object-fit:contain;border-radius:12px}
.primary-nav{justify-self:center;display:flex;align-items:center;gap:4px}
.primary-nav a{padding:10px 12px;border-radius:10px;color:var(--muted);font-size:14px;text-decoration:none;transition:background .2s ease,color .2s ease}
.primary-nav a:hover,.primary-nav a.is-active{color:var(--brand);background:var(--surface-2)}
.search-open,.menu-toggle,.icon-button{border:0;background:transparent;color:var(--ink)}
.search-open{padding:9px 14px;border:1px solid var(--line-strong);border-radius:999px;font-size:14px;background:var(--surface)}
.search-open:hover{border-color:var(--brand);color:var(--brand)}
.menu-toggle{display:none;width:44px;height:44px;padding:10px}
.menu-toggle span:not(.sr-only){display:block;width:22px;height:2px;margin:4px auto;background:var(--ink);border-radius:2px}
.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:500;display:grid;place-items:start center;padding-top:min(14vh,120px)}
.search-backdrop{position:absolute;inset:0;background:rgba(43,37,40,.55)}
.search-dialog{position:relative;width:min(calc(100% - 32px),720px);padding:28px;border:1px solid rgba(255,255,255,.55);border-radius:24px;background:var(--bg);box-shadow:0 30px 80px rgba(43,37,40,.22)}
.search-dialog-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin-bottom:20px}
.search-dialog h2{margin:.2em 0 0;font-size:clamp(26px,4vw,38px);line-height:1.2}
.icon-button{flex:0 0 auto;width:40px;height:40px;border-radius:50%;background:var(--surface-2);font-size:28px;line-height:1}
.search-form label,.page-search-form label,.inline-search label{display:block;margin-bottom:8px;font-weight:700}
.search-line,.page-search-form>div,.inline-search>div{display:grid;grid-template-columns:1fr auto;gap:8px}
.search-line input,.page-search-form input,.inline-search input{min-width:0;border:1px solid var(--line-strong);border-radius:12px;padding:13px 14px;background:#fff;color:var(--ink);outline:none}
.search-line input:focus,.page-search-form input:focus,.inline-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(185,58,74,.10)}
.search-line button,.page-search-form button,.inline-search button{border:0;border-radius:12px;padding:0 18px;background:var(--brand);color:#fff;font-weight:700}
.search-form p{margin:10px 0 0;color:var(--muted);font-size:14px}
.eyebrow{margin:0 0 10px;color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.hero{position:relative;overflow:hidden;padding:86px 0 74px}
.hero:before{content:"";position:absolute;inset:-160px auto auto -140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(217,130,141,.24),rgba(217,130,141,0) 68%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(380px,.92fr);align-items:center;gap:60px}
.hero h1,.page-hero h1,.not-found h1{margin:.18em 0 .45em;max-width:18ch;color:var(--ink);font-family:var(--serif);font-size:clamp(42px,5.8vw,72px);line-height:1.08;letter-spacing:-.025em}
.hero-lead,.page-hero p{max-width:720px;margin:0;color:#5b5053;font-size:18px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:28px}
.hero-actions.small{margin-top:22px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 18px;border:1px solid transparent;border-radius:999px;font-weight:750;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.button:hover{transform:translateY(-1px)}
.button.primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(185,58,74,.20)}
.button.primary:hover{background:#a93241}
.button.secondary{border-color:var(--line-strong);background:var(--surface);color:var(--ink)}
.button.secondary:hover{border-color:var(--brand);color:var(--brand)}
.text-link{color:var(--brand);font-weight:750;text-decoration:none}
.text-link:after{content:" →"}
.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:32px 0 0}
.hero-facts div{padding:14px 16px;border-left:2px solid var(--brand-soft);background:rgba(255,255,255,.45)}
.hero-facts dt{font-size:12px;color:var(--muted);font-weight:700}
.hero-facts dd{margin:3px 0 0;font-size:14px;color:var(--ink)}
.hero-media{margin:0;padding:12px;border:1px solid var(--line);border-radius:30px;background:var(--surface);box-shadow:var(--shadow);transform:rotate(.8deg)}
.hero-media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:22px}
.hero-media figcaption{padding:12px 8px 4px;color:var(--muted);font-size:13px}
.section{padding:78px 0}
.section.tint{background:var(--surface-2)}
.section-heading{display:grid;grid-template-columns:1fr minmax(300px,.85fr);column-gap:42px;align-items:end;margin-bottom:34px}
.section-heading .eyebrow{grid-column:1/-1}
.section-heading h2{margin:0;color:var(--ink);font-family:var(--serif);font-size:clamp(30px,4vw,48px);line-height:1.15}
.section-heading>p:last-child{margin:0;color:var(--muted)}
.pillar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pillar-card{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:0 8px 24px rgba(43,37,40,.04)}
.pillar-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pillar-card-body{padding:24px}
.pillar-card h3{margin:0 0 10px;color:var(--ink);font-size:23px}
.pillar-card p{margin:0 0 18px;color:var(--muted)}
.pillar-card a{color:var(--brand);font-weight:750;text-decoration:none}
.split-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:64px;align-items:start}
.split-grid>div:first-child{position:sticky;top:110px}
.split-grid h2,.feature-copy h2,.browser-copy h2,.mobile-grid h2,.guide-highlight h2,.about-grid h2,.final-cta h2{margin:.15em 0 .45em;color:var(--ink);font-family:var(--serif);font-size:clamp(30px,4vw,46px);line-height:1.2}
.step-list{display:grid;gap:14px}
.step-item{display:grid;grid-template-columns:48px 1fr;gap:18px;padding:22px;border:1px solid rgba(217,196,193,.9);border-radius:18px;background:rgba(255,255,255,.62)}
.step-item>span{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;font-size:13px}
.step-item h3{margin:0 0 6px;color:var(--ink)}
.step-item p{margin:0;color:var(--muted)}
.feature-grid,.browser-grid,.mobile-grid,.guide-highlight-grid,.about-grid,.media-copy-grid,.page-hero-grid,.editorial-callout{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.feature-image{margin:0}
.feature-image img,.browser-grid figure img,.guide-highlight-grid img,.about-grid img,.media-copy-grid figure img,.editorial-callout img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
.browser-grid figure,.media-copy-grid figure{margin:0}
.check-list{list-style:none;padding:0;margin:20px 0}
.check-list li{position:relative;padding:8px 0 8px 30px}
.check-list li:before{content:"✓";position:absolute;left:0;top:8px;color:var(--brand);font-weight:900}
.inline-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:18px}
.inline-links a{color:var(--brand);font-weight:750;text-decoration:none}
.mobile-grid figure{margin:0}
.mobile-grid figure img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:54px 18px 54px 18px}
.choice-table-wrap,.device-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
.choice-table,.device-table{width:100%;border-collapse:collapse;min-width:760px}
.choice-table th,.choice-table td,.device-table th,.device-table td{padding:18px 20px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.choice-table thead th,.device-table thead th{background:#f8efee;color:var(--ink);font-size:13px;letter-spacing:.04em}
.choice-table tbody tr:last-child td,.device-table tbody tr:last-child td,.device-table tbody tr:last-child th{border-bottom:0}
.choice-table a{color:var(--brand);font-weight:750;text-decoration:none}

.guide-highlight-grid{padding:28px;border:1px solid var(--line);border-radius:28px;background:var(--surface)}
.guide-highlight-grid img{aspect-ratio:16/10}
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.topic-card{display:grid;grid-template-columns:180px 1fr;gap:22px;align-items:center;padding:16px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.topic-card img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:14px}
.topic-card h3{margin:0 0 6px;color:var(--ink)}
.topic-card p{margin:0 0 8px;color:var(--muted);font-size:14px}
.topic-card a{color:var(--brand);font-weight:750;text-decoration:none}
.faq-list{display:grid;gap:12px}
.faq-list details{border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.faq-list summary{position:relative;padding:18px 54px 18px 20px;color:var(--ink);font-weight:750;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";position:absolute;right:20px;top:16px;color:var(--brand);font-size:24px;line-height:1}
.faq-list details[open] summary:after{content:"−"}
.faq-list details p{margin:0;padding:0 20px 20px;color:var(--muted)}
.faq-list.compact{max-width:920px}
.section-actions{margin-top:26px}
.about-grid img{aspect-ratio:4/3}
.final-cta{padding-top:0}
.final-cta-inner{display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center;padding:38px;border-radius:28px;background:var(--ink);color:#fff}
.final-cta h2{color:#fff}
.final-cta p{color:#e6dddf}
.final-cta-links{display:grid;gap:10px;min-width:220px}
.final-cta-links a{padding:12px 16px;border:1px solid rgba(255,255,255,.18);border-radius:12px;background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.inner-page{min-height:60vh}
.breadcrumbs{padding:18px 0 0}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;color:var(--muted);font-size:13px}
.breadcrumbs li+li:before{content:"/";margin-right:8px;color:#b7a8aa}
.breadcrumbs a{text-decoration:none}
.page-hero{padding:56px 0 36px}
.page-hero.compact-hero{padding-bottom:22px}
.page-hero-grid{grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:56px}
.page-hero h1{max-width:18ch;font-size:clamp(38px,5vw,62px)}
.page-hero-grid>img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--line)}
.narrow h2,.content-split h2,.prose-long h2,.privacy-list h2,.contact-grid h2,.safety-grid h2{margin:0 0 12px;color:var(--ink);font-family:var(--serif);font-size:clamp(27px,3vw,38px);line-height:1.25}
.narrow p,.prose-long p{color:#554a4d}
.check-card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.check-card{padding:24px;border-left:4px solid var(--brand);border-radius:0 18px 18px 0;background:var(--surface)}
.check-card h3{margin:0 0 8px;color:var(--ink)}
.check-card p{margin:0;color:var(--muted)}
.content-split{display:grid;grid-template-columns:1fr .8fr;gap:42px;align-items:start}
.prose-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.link-list{list-style:none;padding:0;margin:18px 0 0}
.link-list li{padding:16px 0;border-top:1px solid var(--line)}
.link-list a{display:block;color:var(--brand);font-weight:800;text-decoration:none}
.link-list span{display:block;color:var(--muted);font-size:14px}
.note-panel{padding:24px;border-radius:18px;background:var(--ink);color:#fff}
.note-panel h2,.note-panel h3{margin-top:0;color:#fff}
.note-panel p,.note-panel li{color:#e6dddf}
.note-panel a{color:#ffd7dc;font-weight:750}
.editorial-callout{padding:28px;border-radius:26px;background:linear-gradient(120deg,#fff,#fbf3f2);border:1px solid var(--line)}
.editorial-callout img{box-shadow:none}
.stacked-editorial{border-top:1px solid var(--line-strong)}
.editorial-row{display:grid;grid-template-columns:80px 1fr;gap:22px;padding:28px 0;border-bottom:1px solid var(--line)}
.row-index{color:var(--brand-soft);font-size:28px;font-weight:900}
.editorial-row h3{margin:0 0 8px;color:var(--ink);font-size:24px}
.editorial-row p{margin:0;max-width:820px;color:var(--muted)}
.number-list{display:grid;gap:12px;padding-left:22px}
.number-list li{padding-left:8px;color:#554a4d}
.number-list strong{color:var(--ink)}
.next-paths{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:18px;align-items:stretch}
.next-paths>a{display:flex;flex-direction:column;justify-content:center;padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff;text-decoration:none}
.next-paths strong{color:var(--brand);font-size:20px}
.next-paths span{color:var(--muted);font-size:14px}
.app-stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.app-stage{padding:24px;border:1px solid var(--line);border-radius:20px;background:#fff}
.app-stage>span{display:inline-grid;place-items:center;width:40px;height:40px;margin-bottom:20px;border-radius:50%;background:var(--surface-2);color:var(--brand);font-weight:900}
.app-stage h3{margin:0 0 10px;color:var(--ink)}
.app-stage p{margin:0;color:var(--muted);font-size:15px}
.reverse figure{order:2}
.do-dont-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.do-panel,.dont-panel{padding:26px;border-radius:20px}
.do-panel{background:#fff;border:1px solid var(--line)}
.dont-panel{background:#2b2528;color:#fff}
.do-panel h3,.dont-panel h3{margin-top:0}
.do-panel li{color:#554a4d}
.dont-panel li{color:#e6dddf}
.micro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.micro-grid article{padding:22px;border-top:3px solid var(--brand-soft);background:rgba(255,255,255,.7)}
.micro-grid h3{margin:0 0 6px;color:var(--ink)}
.micro-grid p{margin:0;color:var(--muted)}
.inline-search{margin-top:22px;padding:20px;border:1px solid var(--line);border-radius:16px;background:#fff}
.timeline{display:grid;gap:0}
.timeline article{position:relative;display:grid;grid-template-columns:54px 1fr;gap:20px;padding:0 0 28px}
.timeline article:not(:last-child):before{content:"";position:absolute;left:26px;top:48px;bottom:0;width:1px;background:var(--line-strong)}
.timeline span{position:relative;z-index:2;display:grid;place-items:center;width:54px;height:54px;border-radius:50%;background:var(--brand);color:#fff;font-weight:900}
.timeline h3{margin:0 0 4px;color:var(--ink)}
.timeline p{margin:0;color:var(--muted)}
.guide-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide-card{padding:22px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.7)}
.guide-card>span{display:inline-block;margin-bottom:12px;padding:4px 9px;border-radius:999px;background:#ead8d6;color:var(--brand);font-size:12px;font-weight:800}
.guide-card h3{margin:0 0 8px;color:var(--ink)}
.guide-card p{margin:0 0 12px;color:var(--muted)}
.guide-card a{color:var(--brand);font-weight:750;text-decoration:none}
.device-table tbody th{color:var(--ink);background:#fffafa}
.device-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.device-cards article{padding:24px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.device-cards h2{margin-top:0;color:var(--ink)}
.device-cards p{color:var(--muted)}
.device-cards a{color:var(--brand);font-weight:750;text-decoration:none}
.route-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}
.route-flow a{padding:14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--brand);font-weight:800}
.route-flow span{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:500}
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.safety-grid article{padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff}
.safety-grid h2,.safety-grid h3{font-size:22px;font-family:var(--sans);margin:0 0 8px}
.safety-grid p{margin:0;color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:1fr 320px;gap:34px;align-items:start}
.faq-side{position:sticky;top:100px;display:grid;gap:10px}
.faq-side h2{margin:0 0 6px;color:var(--ink)}
.faq-side a{padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff;text-decoration:none}
.faq-side strong{display:block;color:var(--brand)}
.faq-side span{display:block;color:var(--muted);font-size:13px}
.prose-long{display:grid;gap:10px}
.prose-long h2{margin-top:28px}
.prose-long h2:first-child{margin-top:0}
.privacy-list,.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.privacy-list article,.contact-grid article{padding:26px;border:1px solid var(--line);border-radius:20px;background:#fff}
.privacy-list h2,.contact-grid h2{font-size:27px}
.privacy-list p,.contact-grid p{margin-bottom:0;color:var(--muted)}
.search-page-head{padding:56px 0 16px}
.search-page-head h1{margin:.1em 0 .55em;color:var(--ink);font-family:var(--serif);font-size:clamp(36px,5vw,58px);line-height:1.15}
.page-search-form{margin-top:22px}
.result-count{color:var(--muted)}
.search-results{display:grid;gap:14px}
.search-results article{padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff}
.search-results h2{margin:0 0 8px;font-size:25px}
.search-results h2 a{text-decoration:none;color:var(--ink)}
.search-results p{margin:0 0 10px;color:var(--muted)}
.empty-state{padding:36px;border:1px dashed var(--line-strong);border-radius:20px;background:#fffdfc;text-align:center}
.empty-state h2{margin-top:0;color:var(--ink)}
.not-found{padding:110px 0}
.not-found-inner{max-width:760px;text-align:center}
.not-found h1{max-width:none;margin-inline:auto}
.not-found p{color:var(--muted);font-size:18px}
.not-found-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px}
.not-found-links a{padding:10px 14px;border:1px solid var(--line-strong);border-radius:999px;background:#fff;color:var(--brand);text-decoration:none}
.site-footer{margin-top:56px;padding:56px 0 24px;background:var(--ink);color:#fff}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:44px}
.brand-footer{color:#fff}
.footer-brand p{max-width:360px;color:#cfc3c6;font-size:14px}
.footer-grid h2{margin:0 0 12px;color:#fff;font-size:15px}
.footer-grid>div:not(.footer-brand){display:flex;flex-direction:column;align-items:flex-start}
.footer-grid>div:not(.footer-brand) a{margin:4px 0;color:#d6cacc;font-size:14px;text-decoration:none}
.footer-grid a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#a9999d;font-size:12px}
.footer-bottom p{margin:0}
.footer-bottom a{color:#d6cacc}
.back-top{position:fixed;right:20px;bottom:20px;z-index:80;width:44px;height:44px;border:0;border-radius:50%;background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(43,37,40,.2);opacity:0;transform:translateY(8px);pointer-events:none;transition:.2s ease}
.back-top.is-visible{opacity:1;transform:none;pointer-events:auto}

@media (max-width:1100px){
    .primary-nav a{padding:9px 8px;font-size:13px}
    .hero-grid{gap:36px;grid-template-columns:1.05fr .95fr}
    .app-stage-grid{grid-template-columns:repeat(2,1fr)}
    .safety-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
    .header-inner{grid-template-columns:auto auto 1fr}
    .menu-toggle{display:block;order:3;justify-self:end}
    .search-open{order:2;justify-self:end}
    .primary-nav{display:none;position:absolute;top:74px;left:20px;right:20px;padding:12px;border:1px solid var(--line);border-radius:16px;background:var(--bg);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
    .primary-nav.is-open{display:flex}
    .primary-nav a{padding:11px 12px}
    .hero-grid,.page-hero-grid{grid-template-columns:1fr}
    .hero-media{max-width:720px}
    .split-grid{grid-template-columns:1fr}
    .split-grid>div:first-child{position:static}
    .pillar-grid{grid-template-columns:1fr}
    .pillar-card{display:grid;grid-template-columns:240px 1fr}
    .pillar-card img{height:100%;aspect-ratio:auto}
    .feature-grid,.browser-grid,.mobile-grid,.guide-highlight-grid,.about-grid,.media-copy-grid,.editorial-callout{grid-template-columns:1fr}
    .reverse figure{order:0}
    .topic-grid{grid-template-columns:1fr}
    .section-heading{grid-template-columns:1fr;gap:14px}
    .content-split{grid-template-columns:1fr}
    .next-paths{grid-template-columns:1fr 1fr}
    .next-paths>div{grid-column:1/-1}
    .guide-card-grid{grid-template-columns:repeat(2,1fr)}
    .faq-layout{grid-template-columns:1fr}
    .faq-side{position:static;grid-template-columns:repeat(2,1fr)}
    .faq-side h2{grid-column:1/-1}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
    .footer-grid>div:last-child{grid-column:2}
}
@media (max-width:768px){
    .shell{width:min(calc(100% - 28px),var(--shell))}
    .hero{padding:58px 0 50px}
    .hero h1{font-size:clamp(38px,11vw,58px)}
    .hero-lead,.page-hero p{font-size:16px}
    .hero-facts{grid-template-columns:1fr}
    .section{padding:58px 0}
    .pillar-card{grid-template-columns:1fr}
    .pillar-card img{aspect-ratio:16/9}
    .topic-card{grid-template-columns:130px 1fr}
    .final-cta-inner{grid-template-columns:1fr}
    .final-cta-links{min-width:0}
    .check-card-grid{grid-template-columns:1fr}
    .micro-grid{grid-template-columns:repeat(2,1fr)}
    .device-cards{grid-template-columns:1fr}
    .route-flow{grid-template-columns:1fr}
    .privacy-list,.contact-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
    .footer-brand{grid-column:1/-1}
    .footer-grid>div:last-child{grid-column:auto}
    .footer-bottom{flex-direction:column}
}
@media (max-width:600px){
    .header-inner{min-height:66px;gap:8px}
    .brand span{font-size:15px}
    .brand img{width:36px;height:36px}
    .search-open{font-size:12px;padding:8px 10px}
    .primary-nav{top:66px;left:14px;right:14px}
    .hero-actions{align-items:stretch;flex-direction:column}
    .hero-actions .button,.hero-actions .text-link{text-align:center}
    .page-hero{padding-top:42px}
    .page-hero h1{font-size:clamp(34px,11vw,50px)}
    .section-heading h2{font-size:34px}
    .topic-card{grid-template-columns:1fr}
    .topic-card img{aspect-ratio:16/8}
    .editorial-row{grid-template-columns:1fr}
    .row-index{font-size:20px}
    .app-stage-grid{grid-template-columns:1fr}
    .do-dont-grid{grid-template-columns:1fr}
    .micro-grid{grid-template-columns:1fr}
    .guide-card-grid{grid-template-columns:1fr}
    .safety-grid{grid-template-columns:1fr}
    .faq-side{grid-template-columns:1fr}
    .faq-side h2{grid-column:auto}
    .next-paths{grid-template-columns:1fr}
    .next-paths>div{grid-column:auto}
    .search-dialog{padding:20px}
    .search-line,.page-search-form>div,.inline-search>div{grid-template-columns:1fr}
    .search-line button,.page-search-form button,.inline-search button{min-height:46px}
}
@media (max-width:375px){
    .shell{width:min(calc(100% - 20px),var(--shell))}
    .brand span{display:none}
    .hero h1{font-size:36px}
    .section{padding:48px 0}
    .pillar-card-body,.app-stage,.guide-card{padding:20px}
    .final-cta-inner{padding:26px}
}
@media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}