:root{--bg:#faf9f6;--surface:#fff;--ink:#242322;--muted:#686662;--accent:#ac2848;--accent-hover:#921d3b;--line:#dedbd5;--wash:#f0ede7;--nav:rgba(250,249,246,.86);--card-a:#edf0ed;--card-b:#f1e7e9;--card-c:#ece7df;--card-d:#e9edf3;--shadow:0 32px 65px -22px #28201f45;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB',sans-serif;font-synthesis:none;scroll-behavior:auto;scroll-padding-top:88px;background:var(--bg);color:var(--ink)}
:root[data-theme=dark]{--bg:#181819;--surface:#222224;--ink:#f4f2ee;--muted:#b1aeaa;--accent:#ffcc99;--accent-hover:#ffdbb7;--line:#3a383a;--wash:#242224;--nav:rgba(24,24,25,.88);--card-a:#252e2a;--card-b:#34272c;--card-c:#302b26;--card-d:#252c37;--shadow:0 32px 65px -22px #000b;color-scheme:dark}
*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:6px}button{border:0;background:none}img{display:block;max-width:100%;height:auto}figure,p,h1,h2,h3{margin:0}h1,h2,h3{font-weight:650;letter-spacing:-.055em;text-wrap:balance}h1{font-size:clamp(56px,6.4vw,90px);line-height:1.035}h2{font-size:clamp(42px,4.7vw,66px);line-height:1.06}h3{font-size:clamp(32px,3vw,43px);line-height:1.1}p{text-wrap:pretty}svg{display:block}.wrap{width:min(1120px,calc(100% - 96px));margin-inline:auto}.section{padding-block:112px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:.17em;color:var(--accent);line-height:1.6;margin-bottom:25px}.accent{color:var(--accent)}.section-description{color:var(--muted);font-size:21px;line-height:1.65;max-width:640px}.site-header{position:sticky;top:0;z-index:20;background:var(--nav);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);border-bottom:1px solid var(--line)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:650;letter-spacing:-.045em;flex-shrink:0}.brand img{border-radius:24%;box-shadow:0 0 0 1px #8881}.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto;margin-right:28px;font-size:12px;color:var(--muted)}.nav-links a{padding-block:15px}.nav-links 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24px;border-radius:99px;font-size:14px;font-weight:500;line-height:1.4;transition:background .2s,transform .2s}.button svg{width:20px;height:20px}.primary{background:var(--accent);color:#fff}.primary:hover{background:var(--accent-hover);transform:translateY(-2px)}[data-theme=dark] .primary{color:#26141b}.secondary{border:1px solid var(--line);background:var(--surface);color:var(--ink)}.secondary:hover{border-color:var(--muted);transform:translateY(-2px)}.desktop-tag{font-size:10px;color:var(--muted);border-left:1px solid var(--line);padding-left:9px;letter-spacing:.015em}.hero-note{font-size:11px;color:var(--muted);margin-top:17px;letter-spacing:.025em}.hero-stage{height:610px;position:relative;max-width:1080px;margin:60px auto 0;isolation:isolate}.stage-wash{position:absolute;inset:90px -180px -150px;border-radius:50%;z-index:-1;background:radial-gradient(ellipse at center,#c3ab991e 0%,#d2c9b91a 38%,transparent 70%)}.phone{position:absolute;padding:7px;background:#272527;border:1px solid #a4a09d;border-radius:43px;box-shadow:inset 0 0 0 2px #514e50,var(--shadow);width:252px;transform-origin:50% 90%}.phone img{width:100%;border-radius:35px;aspect-ratio:1206/2622;object-fit:cover}.phone:after{position:absolute;content:'';width:27%;height:3%;background:#09090a;left:36.5%;top:2.5%;border-radius:50px;pointer-events:none}.phone figcaption{position:absolute;top:calc(100% + 25px);width:150%;left:-25%;font-size:11px;color:var(--muted);letter-spacing:.02em;white-space:nowrap}.phone-center{width:286px;left:calc(50% - 143px);top:0;z-index:3;border-radius:47px}.phone-center img{border-radius:39px}.phone-left{left:calc(50% - 395px);top:59px;transform:rotate(-8deg);z-index:1}.phone-right{left:calc(50% + 143px);top:59px;transform:rotate(8deg);z-index:1}.hero-footer{display:flex;justify-content:center;align-items:center;gap:25px;padding-top:68px;padding-bottom:33px;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted);letter-spacing:.025em}.small-cross{color:var(--accent);font-size:13px}.focus-section{text-align:center;padding-top:120px;padding-bottom:100px}.focus-section h2{font-size:clamp(50px,6vw,80px)}.focus-section .section-description{margin:28px auto 40px;max-width:620px}.focus-values{display:flex;justify-content:center;gap:47px}.focus-values>span{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:500}.focus-values svg{width:23px;height:23px;fill:none;stroke:var(--accent);stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}.offline-section{padding-top:30px}.section-intro{display:grid;grid-template-columns:1.2fr 1fr;align-items:end;gap:90px;margin-bottom:45px}.section-intro>p{font-size:18px;color:var(--muted);line-height:1.7;padding-bottom:3px}.section-intro .eyebrow{font-size:10px}.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.scene{border-radius:20px;overflow:hidden;background:var(--wash)}.scene img{width:100%;aspect-ratio:1.32;object-fit:cover}.scene figcaption{padding:25px 27px 28px;display:flex;flex-direction:column;gap:9px;font-size:18px;font-weight:500;letter-spacing:-.02em}.caption-label{font-size:9px;letter-spacing:.15em;color:var(--muted);font-weight:600}.features-section{background:var(--surface)}.features-section h2{margin-bottom:48px}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.feature-card{border-radius:25px;overflow:hidden;position:relative;isolation:isolate;min-height:660px;padding:43px 42px 0}.card-copy{position:relative;z-index:2}.mini-label{font-size:9px;letter-spacing:.15em;font-weight:650;color:var(--muted);margin-bottom:17px}.feature-card h3{margin-bottom:18px}.feature-card 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p{font-size:15px;color:var(--muted);line-height:1.7}.detail-icon{font-family:Georgia,serif;font-size:31px;color:var(--accent);line-height:32px;display:block;height:32px}.detail-svg{height:32px;width:32px;color:var(--accent)}.faq-section{display:grid;grid-template-columns:1fr 1.5fr;column-gap:100px;border-top:1px solid var(--line);padding-top:75px}.faq-section .eyebrow{grid-column:1;margin-bottom:22px}.faq-section h2{grid-column:1;font-size:45px}.faq-list{grid-column:2;grid-row:1/4}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{list-style:none;cursor:pointer;padding:24px 30px 24px 0;font-size:17px;font-weight:500;line-height:1.5;position:relative}.faq-list details:first-child summary{padding-top:0}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';font-weight:300;position:absolute;right:0;top:24px;color:var(--muted);font-size:22px;line-height:1}.faq-list details:first-child summary:after{top:1px}.faq-list details[open] summary:after{content:'−'}.faq-list details p{padding:0 30px 24px 0;font-size:15px;line-height:1.8;color:var(--muted)}.closing{background:var(--wash);text-align:center}.closing-icon{border-radius:23%;margin:0 auto 25px;box-shadow:0 8px 25px #0000000b}.closing .eyebrow{font-size:10px;margin-bottom:20px}.closing h2{font-size:clamp(52px,6vw,76px)}.closing p:not(.eyebrow){font-size:18px;color:var(--muted);margin:24px auto 30px;max-width:500px;line-height:1.6}.closing .actions{gap:26px}.text-link{display:flex;align-items:center;gap:9px;font-size:14px;min-height:44px}.text-link:hover{color:var(--accent)}.footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:35px;font-size:11px;color:var(--muted)}.footer .brand{color:var(--ink);font-size:18px}.footer p{margin-right:auto;margin-left:25px}dialog{border:1px solid var(--line);border-radius:24px;background:var(--surface);color:var(--ink);max-width:min(440px,calc(100% - 40px));padding:42px;box-shadow:0 20px 80px #0004}dialog::backdrop{background:#0006;backdrop-filter:blur(5px)}dialog h2{font-size:29px;margin-bottom:15px}dialog p{font-size:16px;line-height:1.7;color:var(--muted);margin-bottom:24px}.dialog-close{position:absolute;right:12px;top:10px;width:35px;height:35px;font-size:25px}.dialog-done{min-height:44px;font-size:13px}
html[lang=zh-CN] h1,html[lang=zh-CN] h2,html[lang=zh-CN] h3{letter-spacing:-.035em;line-height:1.18}html[lang=zh-CN] .hero-description{max-width:570px;line-height:1.8}html[lang=zh-CN] .card-copy>p:last-of-type{line-height:1.9}html[lang=zh-CN] .feature-card{min-height:650px}html[lang=zh-CN] .type-card,html[lang=zh-CN] .search-card{min-height:600px}
@media(min-width:1600px){.hero-stage{margin-top:70px}.hero{padding-top:85px}}
@media(max-width:1000px){.wrap{width:calc(100% - 64px)}.section{padding-block:85px}.nav-links{gap:22px;margin-right:10px}.hero{padding-top:65px}.hero-stage{transform:scale(.87);transform-origin:top center;margin-bottom:-65px}.hero-footer{padding-top:75px}.section-intro{gap:45px}.feature-card{padding:32px 30px 0;min-height:660px}.feature-card h3{font-size:36px}.feature-card .card-copy>p:last-of-type{font-size:15px}.details-grid{gap:35px}.faq-section{column-gap:50px}.faq-section h2{font-size:38px}.focus-section{padding-top:100px}.offline-section{padding-top:25px}.phone figcaption{font-size:12px}.scene figcaption{font-size:16px;padding:23px}.type-sample{padding-left:0}.type-en{font-size:40px}}
@media(max-width:700px){.wrap{width:calc(100% - 40px)}.nav{height:64px;gap:12px}.nav-links{display:none}.nav-controls{gap:10px}.nav-divider{margin-inline:3px}.brand{font-size:21px}.brand img{width:29px;height:29px}.site-header{backdrop-filter:blur(16px)}.section{padding-block:70px}.hero{padding-top:49px}h1{font-size:clamp(45px,9vw,62px);letter-spacing:-.055em}h2{font-size:43px}h3{font-size:34px}.hero .eyebrow{font-size:9px;margin-bottom:22px}.hero-description{font-size:16px;max-width:370px;margin-top:22px;margin-bottom:24px}.hero .actions{gap:10px;flex-wrap:nowrap}.button{font-size:12px;padding:12px 17px;min-height:46px;gap:7px}.button svg{width:17px;height:17px}.desktop-tag{font-size:9px;padding-left:7px}.hero-note{font-size:10px;letter-spacing:0;margin-top:16px}.hero-stage{height:405px;width:600px;left:50%;margin-left:-300px;transform:none;margin-top:45px;margin-bottom:0}.phone{border-radius:29px;padding:5px}.phone img{border-radius:23px}.phone-center{width:192px;left:204px;top:0;border-radius:32px}.phone-center img{border-radius:25px}.phone-left{width:157px;left:64px;top:59px;transform:rotate(-9deg)}.phone-right{width:157px;left:379px;top:59px;transform:rotate(9deg)}.phone figcaption{display:none}.phone:after{top:2.8%}.hero-footer{padding-top:52px;padding-bottom:24px;font-size:9px;gap:13px}.small-cross{font-size:10px}.focus-section{padding-top:85px;padding-bottom:65px}.focus-section h2{font-size:52px}.section-description{font-size:18px;line-height:1.65}.focus-section .section-description{font-size:17px;margin-top:25px;margin-bottom:32px}.focus-values{gap:18px;flex-wrap:wrap}.focus-values>span{font-size:11px;gap:6px}.focus-values svg{width:20px;height:20px}.eyebrow{font-size:9px;letter-spacing:.13em;margin-bottom:20px}.offline-section{padding-top:20px}.section-intro{grid-template-columns:1fr;gap:23px;margin-bottom:30px}.section-intro>p{font-size:16px;line-height:1.75;max-width:450px}.section-intro .eyebrow{font-size:9px}.scene-grid{gap:20px;grid-template-columns:1fr}.scene{border-radius:18px}.scene img{aspect-ratio:1.5}.scene figcaption{padding:22px 24px;font-size:17px}.caption-label{font-size:8px}.features-section h2{margin-bottom:32px}.feature-grid{grid-template-columns:1fr;gap:20px}.feature-card{padding:33px 30px 0;min-height:620px}.feature-card h3{font-size:36px}.feature-card .card-copy>p:last-of-type{font-size:15px;max-width:360px}.card-phone{margin-top:30px;width:238px}.collection-card .card-phone{width:265px}.type-card{min-height:590px}.search-card{min-height:590px}.type-sample{padding-top:38px;padding-left:12px}.center-intro .section-description{font-size:17px;margin:24px auto 35px}.ipad{width:100%;padding:7px;border-radius:16px}.ipad img{border-radius:10px}.image-caption{font-size:10px;margin-top:18px}.bilingual-section{padding-bottom:25px}.details-section{padding-top:65px}.details-grid{grid-template-columns:1fr;gap:32px;margin-top:35px;padding-top:33px}.details-grid article{display:grid;grid-template-columns:35px 1fr;gap:0 20px}.details-grid h3{font-size:23px;margin:0 0 10px}.details-grid p{grid-column:2;font-size:15px}.detail-svg,.detail-icon{grid-row:1/3}.faq-section{display:block;padding-top:55px}.faq-section h2{font-size:40px;margin-bottom:35px}.faq-list summary{font-size:16px}.faq-list details p{font-size:14px}.closing h2{font-size:55px}.closing p:not(.eyebrow){font-size:16px;max-width:300px}.closing .actions{gap:20px}.footer{padding-block:28px;flex-wrap:wrap;gap:18px;font-size:10px}.footer .brand{font-size:18px}.footer p{margin:0;order:3;flex-basis:100%;font-size:11px}.footer>span{margin-left:auto}html[lang=zh-CN] h1{font-size:clamp(43px,9vw,58px)}html[lang=zh-CN] .feature-card{min-height:620px}html[lang=zh-CN] .type-card{min-height:590px}html[lang=zh-CN] .search-card{min-height:590px}html[lang=zh-CN] .hero-description{font-size:15px}html[lang=zh-CN] .focus-section h2{font-size:48px}}
@media(max-width:370px){.wrap{width:calc(100% - 32px)}.hero .button{padding-inline:12px;font-size:11px}.hero .actions{gap:7px}.hero-description{font-size:15px}.hero-stage{height:370px;transform:scale(.9);transform-origin:top center}.hero-footer{padding-top:36px;gap:8px;font-size:8px}.feature-card{padding-inline:25px}.focus-values{gap:12px}.focus-values>span{font-size:10px}}
.button>span,.text-link>span{white-space:nowrap}.button svg{flex-shrink:0}
@media(max-width:700px){.hero .button{padding-inline:13px;font-size:11.5px;gap:6px}.hero .desktop-tag{font-size:8.5px}}
@media(max-width:370px){.hero .actions{flex-direction:column}.hero .button{min-width:230px}.hero-stage{margin-top:35px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

@media(max-width:370px){html[lang=zh-CN] h2{font-size:36px}html[lang=zh-CN] .feature-card h3{font-size:31px}}

:root[data-theme=dark] .button.primary{color:#241b12} :root[data-theme=dark]{--card-b:#302b26}

/* Device shells are actual system captures with edge-connected background removal. */
.phone,.phone-center,.card-phone,.collection-card .card-phone,.search-card .card-phone,.ipad{padding:0;border:0;background:transparent;border-radius:0;box-shadow:none;overflow:visible}
.phone img,.phone-center img,.card-phone img,.ipad img{border-radius:0;aspect-ratio:auto;object-fit:contain} .phone:after{display:none} .device-figure{margin:0}.device-figure img{width:100%;height:auto;display:block}.device-feature{padding-block:80px}.contact-link{white-space:nowrap}.footer{flex-wrap:wrap}

/* Mixed-device hero: shared baseline, balanced widths, phone offset right. */
.hero-stage{width:min(1080px,calc(100% - 64px));height:auto;aspect-ratio:1080/560;left:auto;margin:60px auto 0;transform:none;isolation:isolate}
.hero-stage .phone{top:auto;bottom:7%;transform-origin:50% 100%;margin:0}
.hero-ipad{width:45%;left:5%;transform:rotate(-6deg);z-index:1}
.hero-duo{width:45%;right:5%;left:auto;transform:rotate(6deg);z-index:2}
.hero-stage .phone-center{width:22%;left:40%;transform:none;z-index:3}
.hero-stage .phone img{width:100%;height:auto;filter:drop-shadow(0 18px 24px #00000018)}
.hero-footer{padding-top:34px}
.support-section{display:grid;grid-template-columns:1fr 1fr;gap:90px;border-top:1px solid var(--line);scroll-margin-top:100px}
.support-description{font-size:18px;line-height:1.75;color:var(--muted);max-width:490px;margin-top:25px}
.support-contact{align-self:center}.support-email{font-size:clamp(22px,3vw,31px);font-weight:500;letter-spacing:-.025em;color:var(--accent);display:inline-block;padding-block:12px}
.support-email span{font-size:.75em;margin-left:8px}.support-contact p{font-size:15px;line-height:1.8;color:var(--muted);max-width:450px;margin:12px 0 18px}.support-faq{font-size:14px;color:var(--accent)}
@media(max-width:1000px){.support-section{gap:45px}}
@media(max-width:700px){.hero-stage{width:calc(100% - 24px);aspect-ratio:1080/650;margin-top:38px;margin-bottom:0;left:auto;transform:none}.hero-stage .phone{bottom:9%}.hero-footer{padding-top:20px}.hero .actions{gap:9px;flex-wrap:wrap}.hero .button{font-size:10.5px;padding-inline:10px}.hero .desktop-tag{font-size:7.5px}.support-section{grid-template-columns:1fr;gap:28px}.support-description{font-size:16px;margin-top:20px}.support-contact p{font-size:14px}}

/* Optical centering for large, centered Chinese lines ending in full-width punctuation. */
html[lang="zh-CN"] .optical-line{display:inline-block;transform:translateX(.4em)}