/* Core layout, typography and interactions. Theme, i18n and section rhythm load separately. */
:root{--bg:#fcfcfd;--surface:#f0f2f6;--text:#181b24;--muted:#606675;--line:#dce0e8;--accent:#244bd7;--ease:cubic-bezier(.16,1,.3,1);color-scheme:light dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font-family:"Avenir Next","Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}img{display:block;max-width:100%;height:auto}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{text-wrap:balance}p{text-wrap:pretty}.wrap{width:min(1280px,calc(100% - 112px));margin-inline:auto}.skip-link{position:fixed;top:12px;left:16px;padding:12px 20px;background:var(--text);color:var(--bg);transform:translateY(-160%);z-index:20}.skip-link:focus{transform:none}.site-header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}.nav-shell{height:78px;display:flex;align-items:center;justify-content:space-between;gap:36px}.brand{display:inline-flex;align-items:center;gap:12px}.brand span{font-size:25px;font-weight:750;letter-spacing:1px}.brand img{width:21px;height:36px;object-fit:contain}nav{display:flex;gap:36px;margin-left:auto}nav a{font-size:14px;font-weight:550;padding:14px 0;position:relative}nav a::after{content:"";position:absolute;bottom:6px;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}nav a:hover::after{transform:scaleX(1)}.nav-actions{display:flex;align-items:center;gap:10px}.nav-actions button{border:1px solid var(--line);background:transparent;border-radius:12px;min-height:44px;min-width:48px;padding:0 12px;font-size:13px}.menu-toggle{display:none}.hero{overflow:hidden}.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}.hero-copy{position:relative;z-index:1}.eyebrow{font-size:12px;letter-spacing:1.2px;font-weight:650;text-transform:uppercase;margin-bottom:25px}.hero h1{font-size:clamp(40px,4.25vw,64px);line-height:1.09;letter-spacing:-2.7px;font-weight:600}.hero h1 span{display:block;white-space:nowrap}.hero-lead{max-width:405px;font-size:18px;line-height:1.65;margin-top:28px;color:#e1e8ff}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:35px;white-space:nowrap;min-height:52px;padding:15px 22px;border-radius:12px;background:var(--accent);color:#fafbff;font-size:14px;font-weight:600;transition:transform .3s var(--ease),box-shadow .3s}.button.light{background:#fafbff;color:#1d3faa;margin-top:32px}.button:hover{transform:translateY(-3px);box-shadow:0 9px 20px #15255320}.button:active{transform:scale(.98)}.hero a:focus-visible{outline-color:#faffff}.product-stage{display:flex;align-items:center;justify-content:center;gap:17px;min-width:0;perspective:1200px}.hero-app{width:30%;flex-shrink:0;transition:transform .6s var(--ease);position:relative}.hero-app img{width:100%;height:auto;border:5px solid #f1f3ff;border-radius:24px;box-shadow:0 24px 45px #12257350}.hero-app span{display:block;text-align:center;margin-top:17px;font-size:13px;font-weight:600;color:#e8edff}.app-left{transform:translateY(34px) rotate(-7deg)}.app-center{transform:translateY(-30px);width:34%;z-index:1}.app-right{transform:translateY(35px) rotate(7deg)}.hero-app:hover{transform:translateY(-12px) rotate(0)}.company{display:grid;grid-template-columns:1.15fr 1fr;gap:100px;align-items:center}.company .eyebrow{color:var(--accent);margin-bottom:18px}h2{font-size:clamp(30px,3vw,44px);line-height:1.16;letter-spacing:-1.5px;font-weight:600}.company-intro>p:last-child{font-size:17px;line-height:1.8;color:var(--muted);margin-top:24px;max-width:565px}.portfolio{background:var(--surface);}.section-heading p{font-size:17px;color:var(--muted);margin-top:16px}.product-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:40px;margin-bottom:28px}.product-tabs button{display:flex;align-items:center;gap:14px;border:1px solid transparent;background:transparent;text-align:left;padding:15px;border-radius:12px;min-height:80px;font-size:16px;font-weight:600;transition:background .25s,border-color .25s}.product-tabs img{width:44px;height:44px;border-radius:11px}.product-tabs button:hover{background:var(--bg)}.product-tabs button[aria-selected=true]{background:var(--bg);border-color:var(--accent);box-shadow:0 3px 10px #1d2b4210}.product-panel{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;align-items:center;min-height:520px;background:var(--bg);border-radius:24px;padding:40px 32px 40px 44px}.product-panel[hidden]{display:none}.product-copy .category{font-size:11px;font-weight:650;letter-spacing:1px;color:var(--accent);margin-bottom:26px}.product-copy h3{font-size:clamp(26px,2.6vw,38px);line-height:1.2;letter-spacing:-1px}.product-copy>p:not(.category){font-size:15px;line-height:1.85;color:var(--muted);margin-top:22px;max-width:325px}.store-link{display:inline-flex;gap:24px;align-items:center;font-size:13px;font-weight:600;min-height:44px;margin-top:28px;border-bottom:1px solid var(--line)}.store-link:hover{color:var(--accent);border-color:var(--accent)}.screenshots{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:center;min-width:0}.screenshots img{width:100%;height:auto;border-radius:16px}.approach-heading{max-width:740px}.approach-heading p{font-size:17px;line-height:1.8;color:var(--muted);margin-top:22px;max-width:690px}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:58px;margin-top:50px}.principles article{border-top:2px solid var(--line);padding-top:24px}.principles h3{font-size:21px;font-weight:600;letter-spacing:-.5px}.principles p{font-size:15px;line-height:1.8;color:var(--muted);margin-top:15px}.careers{background:var(--surface)}.careers-inner{display:grid;grid-template-columns:1.15fr 1fr;gap:120px;align-items:center}.careers h2{font-size:clamp(34px,3.5vw,49px)}.careers .eyebrow{color:var(--accent)}.job{background:var(--bg);padding:36px;border:1px solid var(--line);border-radius:24px}.job h3{font-size:27px;letter-spacing:-.7px;line-height:1.3;margin-block:19px 24px}.job p{font-size:14px;line-height:1.7}.job .job-note{color:var(--muted);font-size:13px}.footer-main{display:grid;grid-template-columns:1.4fr 1fr .4fr;gap:60px;}.footer-main>div>p{font-size:14px;color:var(--muted);margin-top:23px}.footer-main h2{font-size:14px;letter-spacing:0;margin-bottom:20px}.contact-email{font-size:16px}.contact-email:hover{color:var(--accent)}address{font-style:normal;font-size:12px;color:var(--muted);line-height:1.8;margin-top:22px}.footer-nav{display:flex;flex-direction:column;align-items:flex-start;gap:15px;font-size:14px}.footer-bottom{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;padding-block:24px;font-size:11px;color:var(--muted)}html[lang=zh-CN] h1{font-size:clamp(34px,3.7vw,54px);letter-spacing:-1px;line-height:1.3}html[lang=zh-CN] h2,html[lang=zh-CN] h3{letter-spacing:0;line-height:1.4}html[lang=zh-CN] .eyebrow{letter-spacing:1px}html[lang=zh-CN] .hero-lead{max-width:385px}
@media(prefers-reduced-motion:no-preference){.hero-copy{animation:enter .9s var(--ease) both}.product-stage{animation:enter 1.15s .15s var(--ease) both}.product-panel:not([hidden]){animation:enter .5s var(--ease)}.reveal.is-visible{animation:enter .7s var(--ease) both}@keyframes enter{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}}
@media(min-width:768px) and (max-width:1100px){.wrap{width:calc(100% - 64px)}.hero-inner{gap:20px}.hero h1{font-size:41px;letter-spacing:-1.7px}.hero-lead{font-size:16px}.product-stage{gap:9px}.hero-app img{border-width:3px;border-radius:18px}.company{gap:45px}.product-tabs button{font-size:13px;gap:9px;padding:12px 8px}.product-tabs img{width:34px;height:34px}.product-panel{gap:25px;padding:28px;min-height:400px;grid-template-columns:.9fr 1.1fr}.screenshots{gap:7px}.screenshots img{border-radius:9px}.careers-inner{gap:65px}nav{gap:22px}.nav-shell{gap:24px}}
@media(max-width:767px){.wrap{width:calc(100% - 40px)}.nav-shell{height:68px;gap:10px}.brand span{font-size:22px}.brand img{width:18px;height:31px}.menu-toggle{display:block}nav{display:none;position:absolute;left:0;right:0;top:68px;margin:0;background:var(--bg);padding:18px 24px 24px;border-bottom:1px solid var(--line)}nav.is-open{display:flex;flex-direction:column;gap:2px}nav a{padding:14px;font-size:16px}.hero-inner{display:flex;flex-direction:column;align-items:stretch;gap:40px;}.eyebrow{font-size:10px;letter-spacing:.6px;margin-bottom:20px}.hero h1{font-size:clamp(35px,9.2vw,56px);letter-spacing:-1.5px}.hero-lead{font-size:15px;margin-top:21px;max-width:340px;line-height:1.75}.button.light{margin-top:24px}.button{min-height:48px;font-size:13px;padding:13px 18px}.product-stage{gap:10px;max-width:420px;width:100%;align-self:center;padding-block:18px 20px}.hero-app img{border-width:3px;border-radius:17px;box-shadow:0 15px 22px #14276130}.hero-app span{font-size:10px;margin-top:12px}.app-center{transform:translateY(-15px)}.app-left,.app-right{transform:translateY(10px)}.company{grid-template-columns:1fr;gap:35px}h2{font-size:30px;letter-spacing:-1px}.company-intro>p:last-child{font-size:15px;line-height:1.85;margin-top:19px}.section-heading p{font-size:15px;line-height:1.7;max-width:280px}.product-tabs{grid-template-columns:repeat(2,1fr);gap:8px;margin-block:27px 20px}.product-tabs button{padding:12px 10px;gap:10px;font-size:13px;min-height:65px}.product-tabs img{width:35px;height:35px;border-radius:9px}.product-panel{grid-template-columns:1fr;gap:28px;padding:26px 20px 20px;min-height:0;border-radius:20px}.product-copy .category{margin-bottom:15px;font-size:10px}.product-copy h3{font-size:28px}.product-copy>p:not(.category){font-size:14px;margin-top:15px;max-width:100%}.store-link{margin-top:17px}.screenshots{overflow-x:auto;grid-template-columns:repeat(3,70%);gap:12px;scroll-snap-type:x mandatory;padding-bottom:10px}.screenshots img{scroll-snap-align:start;border-radius:12px}.approach-heading p{font-size:15px;line-height:1.85}.principles{grid-template-columns:1fr;gap:28px;margin-top:32px}.principles article{padding-top:19px}.principles h3{font-size:20px}.principles p{margin-top:10px;font-size:14px}.careers-inner{grid-template-columns:1fr;gap:30px;}.careers h2{font-size:34px}.job{padding:26px;border-radius:20px}.job h3{font-size:26px}.footer-main{grid-template-columns:1fr;gap:34px;}.footer-nav{flex-direction:row;gap:25px;font-size:13px}.footer-bottom{font-size:10px;flex-direction:column;gap:8px;padding-block:21px}html[lang=zh-CN] h1{font-size:clamp(30px,8vw,45px)}html[lang=zh-CN] h2{font-size:28px}html[lang=zh-CN] .hero-lead{font-size:15px}}

.company-domains{padding:32px 38px;border-left:1px solid var(--line)}.company-domains>span{display:block;color:var(--muted);font-size:12px;margin-bottom:24px}.company-domains p{font-size:clamp(20px,2.1vw,29px);line-height:1.5;letter-spacing:-.5px}.company-domains p+p{margin-top:15px}.product-copy .product-note{font-size:11px;line-height:1.7;color:var(--muted);margin-top:17px}.screenshots:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
@media(max-width:767px){.company-domains{border-left:0;border-top:1px solid var(--line);padding:25px 0 0}.company-domains p{font-size:22px}.company-domains>span{margin-bottom:17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* Integrated editorial careers section: no detached card or duplicate email label. */
.company-domains small{display:block;max-width:360px;font-size:14px;line-height:1.8;color:var(--muted);margin-top:25px}
.careers-inner{grid-template-columns:1fr;gap:36px;}
.careers-inner>div:first-child{max-width:760px}
.careers h2{font-size:clamp(30px,3vw,42px)}
.careers .eyebrow{margin-bottom:18px}

.job{display:flex;justify-content:space-between;align-items:center;gap:40px;background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;padding:30px 0 0}
.job-status{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--accent)}
.job h3{font-size:25px;line-height:1.4;margin-block:12px 15px;letter-spacing:-.5px;text-wrap:normal}
.job-meta{display:flex;gap:22px;align-items:baseline;flex-wrap:wrap}
.job .job-apply{flex-shrink:0;margin:0;min-height:48px;border-color:var(--text)}
.careers .careers-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);gap:56px;align-items:center;}
.careers-copy>p[data-i18n=careersText]{font-size:16px;line-height:1.8;color:var(--muted);margin-top:22px;max-width:520px}
.careers-visual{margin:0;justify-self:end;width:100%;max-width:620px;overflow:hidden;border-radius:20px}
.careers-visual img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.careers .job{display:block;border:0;padding:0;margin-top:32px}
.careers .job h3{font-size:23px;margin-block:10px 12px}
.careers .job .job-apply{margin-top:18px}
@media(min-width:768px) and (max-width:1100px){.careers .careers-inner{gap:32px}.careers h2{font-size:32px}.careers-copy>p[data-i18n=careersText]{font-size:15px}.careers .job-meta{gap:8px 16px}}
@media(max-width:767px){.careers .careers-inner{grid-template-columns:1fr;gap:28px;}.careers-visual{justify-self:center;max-width:440px;border-radius:16px}.careers .job{margin-top:26px;padding:0}.careers-copy>p[data-i18n=careersText]{font-size:15px}}

.approach-heading{max-width:850px}.approach-heading p{max-width:780px}
.approach-body{display:grid;grid-template-columns:1.12fr 1fr;gap:65px;align-items:center;margin-top:36px}
.approach-visual{margin:0;overflow:hidden;border-radius:20px;background:var(--surface)}
.approach-visual img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.approach-body .principles{grid-template-columns:1fr;gap:24px;margin:0}
.approach-body .principles article{border-top:0;padding:0}
.approach-body .principles article+article{border-top:1px solid var(--line);padding-top:23px}
.approach-body .principles p{margin-top:10px}
@media(min-width:768px) and (max-width:1100px){.approach-body{gap:32px}.approach-body .principles{gap:17px}.approach-body .principles article+article{padding-top:17px}.approach-body .principles h3{font-size:19px}.approach-body .principles p{font-size:14px}}
@media(max-width:767px){.approach-body{grid-template-columns:1fr;gap:30px;margin-top:26px}.approach-visual{border-radius:16px}.approach-body .principles{gap:22px}}
@media(max-width:767px){.careers-inner{gap:28px}.job{display:block;padding-top:24px}.job h3{font-size:23px}.job-meta{display:block}.job .job-apply{margin-top:20px}.company-domains small{font-size:13px;max-width:100%}.careers h2{font-size:30px}}