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strong{max-width:28vw;font-size:.88rem}.sticky-download-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:min(100%,292px);gap:8px}.sticky-download-actions .btn{width:100%;min-height:38px;padding:8px 9px;font-size:.78rem}.sticky-download-actions .btn:hover{transform:none}.mobile-lang{display:inline-flex}.hero{min-height:auto;padding:104px 0 52px}.content-hero{padding:104px 0 54px}.hero-content,.section-header,.section-copy{text-align:left}.metric-row,.proof-strip-grid,.instrument-grid,.feature-grid,.use-case-grid,.article-grid,.faq-list{grid-template-columns:1fr}.strip-item{min-height:auto;border-right:0;border-bottom:1px solid var(--line);padding:24px 0}.strip-item:last-child{border-bottom:0}.proof-strip{padding-bottom:46px}.section{padding:72px 0}.hero-visual{height:520px;min-height:480px;margin-top:18px}.hero-media{min-height:560px;overflow:hidden}.hero-media:before{inset:38px -6px}.phone-mockup{width:min(252px,64vw);border-radius:30px}.phone-mockup img{border-radius:22px}.secondary-phone{width:min(214px,54vw)}.secondary-phone.p2{transform:translate(-104px) translateY(42px) rotate(-9deg);animation:none}.secondary-phone.p3{transform:translate(104px) translateY(42px) rotate(9deg);animation:none}.hero-meter-card{right:10px;top:64px;width:124px;padding:12px}.hero-meter-card strong{font-size:2rem}.hero-string-row{display:none}.main-phone{animation:none}.tuner-panel{min-height:500px}.readout-card{right:0;bottom:38px}.download-layout:after{opacity:.35}.feature-card{min-height:auto}.footer-content{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.container{width:min(100% - 28px,var(--max-width))}.hero h1{max-width:11.5em;font-size:clamp(2.05rem,8.8vw,2.65rem);line-height:1.12}html[lang=zh-CN] .hero h1{max-width:9.5em;font-size:clamp(1.82rem,7.6vw,2.18rem);line-height:1.18}.section-header h2,.section-copy h2,.download-layout h2{font-size:clamp(1.72rem,7vw,2.18rem);line-height:1.14}html[lang=zh-CN] .section-header h2,html[lang=zh-CN] .section-copy h2,html[lang=zh-CN] .download-layout h2{font-size:clamp(1.52rem,6.4vw,1.92rem);line-height:1.2}.lead,.section-header p,.section-copy p,.download-layout p:not(.eyebrow){font-size:1rem;line-height:1.65}.cta-group,.download-layout .cta-group,.share-actions{width:100%;flex-direction:column}.sticky-download-actions{flex-direction:row}.btn{width:100%;min-height:46px;padding-right:14px;padding-left:14px;font-size:.93rem}.hero-proof span{width:100%}.sticky-download-inner{gap:10px}.sticky-download-copy{display:none}.sticky-download-actions{width:100%;max-width:none}.sticky-download-actions .btn{min-width:0;font-size:.76rem}.metric{min-height:auto;padding:14px}.metric-row{gap:8px}.hero-visual{height:450px;min-height:420px}.hero-media{min-height:480px}.phone-mockup{width:min(230px,68vw)}.secondary-phone{width:min(192px,56vw)}.secondary-phone.p2{transform:translate(-92px) translateY(46px) rotate(-9deg)}.secondary-phone.p3{transform:translate(92px) translateY(46px) rotate(9deg)}.hero-meter-card{top:54px;right:0;width:112px}.tuner-panel{min-height:430px}.screenshot-frame{width:min(270px,78vw)}.readout-card{width:min(220px,72vw);bottom:12px;right:50%;transform:translate(50%)}.readout-card strong{font-size:3.2rem}.step-card{padding:68px 20px 22px}.step-card span{top:20px;left:20px}.download-section{padding:72px 0}.download-layout,.share-card,.article-block,.faq-item,.facts-panel{padding:26px}.legal-nav{flex-direction:column}}