@charset "UTF-8";
:root{--paper:#f5f7f0;--ink:#17372d;--green:#167556;--lime:#d2f35a;--muted:#67776b;--line:#d5dfcf;--white:#fff;--serif:Georgia,"Songti SC","STSong",serif;--sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible,input:focus-visible{outline:3px solid #188e70;outline-offset:5px}a,button{-webkit-tap-highlight-color:transparent}svg{display:block}p,h1,h2,h3,figure{margin:0}p+p{margin-top:18px}::selection{background:var(--lime);color:var(--ink)}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.mono,.eyebrow,.mini-label,.feature-number{font-family:var(--mono)}.eyebrow{font-size:11px;letter-spacing:1.6px;font-weight:600;line-height:1.5;margin-bottom:24px;color:var(--green)}.status-dot{width:7px;height:7px;background:var(--green);border-radius:50%;display:inline-block;margin-right:9px}.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:var(--lime);padding:12px}.skip-link:focus{top:12px}
.site-header{height:96px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(48px,calc((100% - 1240px)/2));gap:24px;background:rgba(245,247,240,.96);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:12px;font-size:18px;letter-spacing:1px;font-weight:500;line-height:1.2;flex-shrink:0}.brand svg{width:34px;stroke:var(--green);stroke-width:1.6;fill:var(--paper)}.brand small{display:block;font-size:10px;letter-spacing:1.5px;font-weight:400;color:var(--muted);margin-top:7px}.site-header nav{display:flex;gap:32px;font-size:13px}.site-header nav a{transition:color .2s}.site-header nav a:hover{color:var(--green)}.motion-toggle{border:1px solid var(--line);background:transparent;border-radius:6px;font-size:12px;display:flex;align-items:center;gap:8px;padding:8px 12px;color:var(--ink);white-space:nowrap}.motion-toggle:hover{background:#e9efdf}.motion-toggle[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.hero{display:grid;grid-template-columns:1fr 1.06fr;gap:48px;align-items:center;padding-block:78px 66px;min-height:680px}.hero .eyebrow{margin-bottom:30px;font-size:10px}.hero h1{font-size:clamp(42px,4.65vw,68px);line-height:1.24;letter-spacing:-2px;font-weight:650}.accent{color:var(--green)}.question{font-family:var(--serif);font-weight:400}.hero-intro{font-size:17px;line-height:1.9;color:var(--muted);margin-top:28px}.hero-actions{margin-top:34px;display:flex;align-items:center;gap:28px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;border-radius:5px;padding:14px 22px;font-size:14px;font-weight:500;transition:background .2s,transform .2s}.primary{background:var(--green);color:white}.primary:hover{background:#115c44;transform:translateY(-2px)}.button span{font-size:20px;font-weight:300}.text-link{font-size:13px;display:flex;align-items:center;gap:14px}.text-link:hover{color:var(--green)}.hero-note{font-size:11px;color:var(--muted);margin-top:27px;display:flex;align-items:center;gap:9px}.tiny-symbol{font-size:18px}.note-dot{color:#a4afa0}.hero-figure{background:#edf2e6;border:1px solid #d2deca;border-radius:14px;transform:rotate(-1deg);box-shadow:0 12px 0 -7px #e2e9d9,0 13px 0 -6px #d2deca;overflow:hidden}.figure-top{display:flex;justify-content:space-between;padding:19px 24px;border-bottom:1px solid #d2deca;font-size:12px}.figure-top .mono{font-size:10px;color:#6d806e}.figure-top .status-dot{width:6px;height:6px}.network-map{width:100%;height:auto;margin:8px 0 -6px}.hero-figure figcaption{display:flex;justify-content:space-around;border-top:1px solid #d2deca;padding:17px 10px;font-size:11px;color:var(--muted);background:rgba(255,255,255,.25)}.hero-figure figcaption b{font-family:var(--mono);font-weight:500;font-size:10px;color:var(--green);margin-right:5px}.flow-path{fill:none;stroke:#218663;stroke-width:3;stroke-linecap:round;stroke-dasharray:14 380;animation:flow 7s linear infinite}.flow-path.second{animation-delay:-2s}.flow-path.return{stroke:#78a62d;animation-delay:-3.5s}.packet-label{animation:labelFloat 7s ease-in-out infinite}.packet-label.delay{animation-delay:-3.5s}@keyframes flow{to{stroke-dashoffset:-788}}@keyframes labelFloat{0%,100%{opacity:.65;transform:translateY(1px)}50%{opacity:1;transform:translateY(-3px)}}
.chapter-rail{border-block:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr)}.chapter-rail a{padding:22px 28px;border-right:1px solid var(--line);display:flex;align-items:center;gap:16px;font-size:13px;transition:background .2s}.chapter-rail a:first-child{padding-left:0}.chapter-rail a:last-child{border-right:0}.chapter-rail a:hover{background:#eaf0e3}.chapter-rail span{font-family:var(--mono);font-size:11px;color:#81927c}.chapter-rail b{font-size:18px;margin-left:auto;font-weight:400;color:var(--green)}
.section{padding-block:100px}h2{font-size:clamp(28px,3vw,40px);line-height:1.45;font-weight:600;letter-spacing:-1.2px}h3{font-weight:600}.section-lead>p:not(.eyebrow){font-size:15px;line-height:1.9;max-width:390px;color:var(--muted);margin-top:22px}.section-lead p strong{font-weight:550;color:var(--ink)}.source-inline{font-size:12px;color:var(--green);display:inline-block;margin-top:24px;border-bottom:1px solid #acbda4;padding-bottom:2px;line-height:1.8}.source-inline:hover{border-color:var(--green)}.basics{display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.language-card{border:1px solid var(--line);padding:28px 32px;border-radius:9px;background:#fff;min-height:350px}.card-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.card-heading .mono{font-size:9px;letter-spacing:1px;color:var(--muted)}.mini-label{font-size:10px;letter-spacing:1px;color:var(--muted)}.four-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-block:24px;border-bottom:1px solid var(--line);padding-bottom:12px}.four-tabs button{border:0;border-radius:4px;background:transparent;padding:9px;color:#6c7c6e;font-size:13px}.four-tabs button[aria-selected="true"]{background:var(--ink);color:#fff}.four-tabs button:hover:not([aria-selected="true"]){background:var(--paper)}.concept-direction{font-size:11px;color:var(--green);letter-spacing:1px}.concept-reading{display:flex;align-items:baseline;gap:8px;height:91px}.concept-reading>span:first-child{font-family:var(--mono);font-size:52px;line-height:1.6;letter-spacing:-2px}.concept-reading>span:nth-child(2){font-family:var(--mono);font-size:16px;color:var(--muted)}.reading-graphic{display:flex;gap:5px;align-items:flex-end;margin-left:auto}.reading-graphic i{height:22px;width:11px;background:#d2f35a;border-radius:2px}.reading-graphic i:nth-child(2){height:31px}.reading-graphic i:nth-child(3){height:39px}.reading-graphic i:nth-child(4){height:48px}.reading-graphic i:nth-child(5){height:57px;background:#167556}#language-panel h3{font-size:20px;margin-top:2px}#concept-copy{font-size:13px;color:var(--muted);margin-top:9px;min-height:46px}.concept-example{background:var(--paper);border-left:2px solid #b9cba9;padding:10px 12px;font-size:11px;color:#526951;margin-top:22px}
.lab-section{background:#eaf0e3;padding-block:80px;border-block:1px solid #d5dfcf}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:40px}.section-head .eyebrow{margin-bottom:16px}.section-head>p{color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:4px;flex-shrink:0}.takeaway{display:flex;align-items:center;gap:18px;margin-top:26px;border-top:1px solid #c9d5c2;padding-top:22px}.takeaway>span{font-size:28px;color:var(--green)}.takeaway p{font-size:13px;color:var(--muted)}.takeaway strong{color:var(--ink);font-weight:600}.noscript{padding:28px;background:#fff;border:1px solid var(--line)}.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.why-grid article{border-top:2px solid #a9bfa0;padding-top:23px}.feature-number{font-size:10px;letter-spacing:1.2px;color:var(--green)}.why-grid h3{font-size:21px;margin-block:18px 12px}.why-grid p{font-size:14px;color:var(--muted)}.detail-sample{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:23px;min-height:40px}.detail-sample span{border:1px solid var(--line);border-radius:4px;padding:5px 9px;font-family:var(--mono);font-size:11px;background:#fff}.detail-sample strong{font-size:11px;font-weight:500;color:var(--muted)}.detail-sample .quality-good{color:var(--green);background:#e9f4e7}.detail-sample .quality-bad{color:#93543c;background:#faf0e6;border-color:#e0cbb9}.why-grid small{display:block;color:#758372;font-size:11px;margin-top:12px;line-height:1.7}
.family-section{padding-block:75px;background:var(--ink);color:var(--paper)}.family-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}.family-section .eyebrow{color:#b7d17a}.family-section .section-lead>p:not(.eyebrow){color:#b0c1b3}.family-tip{font-size:12px!important;border-left:2px solid #5a755d;padding-left:18px;margin-top:36px!important}.family-list article{display:flex;gap:23px;align-items:center;border-bottom:1px solid #3a5446;padding:20px 16px;position:relative}.family-list article:first-child{padding-top:0}.family-list article:last-child{border:0;padding-bottom:0}.family-no{font-family:var(--mono);font-size:30px;letter-spacing:-1px;min-width:70px;color:#c1d0ba}.family-no.small{font-size:22px}.family-list h3{font-size:15px;font-weight:500;line-height:1.5}.family-list p{font-size:12px;color:#acbfae;margin-top:6px}.family-tag{font-size:9px;white-space:nowrap;letter-spacing:.5px;color:#acbfae;border:1px solid #4a6352;padding:3px 8px;border-radius:3px;margin-left:auto}.family-active{background:#d2f35a;color:var(--ink);border-radius:5px;border:0!important;margin-top:1px}.family-active .family-no,.family-active p,.family-active .family-tag{color:#365232}.family-active .family-tag{border-color:#9ab64d}.active-star{font-size:18px;margin-left:6px}
.device-tabs{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-top:4px}.device-tabs button{border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);padding:12px 2px 16px;font-size:14px}.device-tabs button[aria-selected="true"]{color:var(--green);border-color:var(--green);font-weight:600}.device-tabs button:hover{color:var(--green)}.device-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;padding-block:42px;align-items:center;min-height:330px}.device-illustration{background:linear-gradient(135deg,#e6eddd,#f0f3e9);border-radius:8px;overflow:hidden;min-height:260px;display:grid;place-items:center}.device-illustration svg{width:100%;max-height:300px;aspect-ratio:470/270}.device-story h3{font-size:24px;line-height:1.6;margin-top:12px;max-width:420px}.device-story>p{font-size:14px;color:var(--muted);margin-top:16px}.device-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.device-tags span{font-size:11px;color:#60725d;border:1px solid var(--line);border-radius:4px;padding:4px 9px}.device-story .source-inline{font-size:11px;margin-top:22px}.gateway-note{background:#eaf0e3;padding:27px 32px;display:flex;gap:23px;border-radius:5px;align-items:center}.gateway-symbol{font-family:var(--mono);font-size:35px;color:var(--green)}.gateway-note h3{font-size:17px;margin-bottom:8px}.gateway-note p{font-size:13px;color:var(--muted)}
.protocol-section{padding-bottom:85px}.protocol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:7px;overflow:hidden}.protocol-grid article{padding:28px;border-right:1px solid var(--line);background:#fff}.protocol-grid article:last-child{border:0}.protocol-kicker{font-size:11px;color:var(--muted);margin-bottom:15px}.protocol-grid h3{font-family:var(--mono);font-weight:500;font-size:28px;letter-spacing:-1px;display:flex;justify-content:space-between;align-items:center}.protocol-grid h3 span{font-size:11px;color:#9aa993;letter-spacing:0}.protocol-grid p{font-size:13px;color:var(--muted);margin-top:13px}.protocol-message{border-top:1px solid var(--line);padding-top:20px;margin-top:25px;min-height:70px;font-size:14px;font-weight:500;line-height:1.8}.protocol-grid small{display:block;font-size:11px;color:var(--muted);line-height:1.8;margin-top:10px}.protocol-grid .highlight{background:#e9f0e0}
.notes{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;border-top:1px solid var(--line)}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{padding:22px 0;display:flex;justify-content:space-between;gap:20px;cursor:pointer;list-style:none;font-size:15px;font-weight:500}summary::-webkit-details-marker{display:none}summary span{font-family:var(--mono);font-size:21px;color:var(--green);line-height:1}details[open] summary span{transform:rotate(45deg)}details p{font-size:13px;color:var(--muted);line-height:1.9;padding:0 25px 24px 0;max-width:580px}.sources{padding:40px 0 60px;display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}.sources .eyebrow{font-size:10px;margin-bottom:12px}.sources h2{font-size:24px}.sources>div>p:not(.eyebrow){font-size:12px;color:var(--muted);margin-top:14px}.source-links{display:grid;grid-template-columns:repeat(2,1fr);gap:15px 24px}.source-links a{font-size:11px;color:#50684e;border-bottom:1px solid var(--line);padding-bottom:8px;position:relative;padding-right:14px;line-height:1.8}.source-links a:hover{border-color:var(--green);color:var(--green)}.source-links a span{display:block;font-family:var(--mono);font-size:9px;color:#7c8a76;letter-spacing:.5px;margin-bottom:2px}.source-links b{position:absolute;right:0;bottom:9px;font-size:13px;font-weight:400}.site-footer{border-top:1px solid var(--line);padding-block:35px;display:flex;align-items:center;justify-content:space-between;gap:25px}.footer-brand{font-family:var(--mono);font-size:12px;letter-spacing:.5px;font-weight:600}.footer-brand span{color:#97a78c;padding:0 8px}.site-footer p{font-size:12px;color:var(--muted)}.site-footer small{font-size:10px;display:block;color:#83907d;margin-top:5px}.back-top{font-size:11px;color:var(--muted);white-space:nowrap}
body.motion-paused .flow-path,body.motion-paused .packet-label{animation-play-state:paused}body.motion-paused{scroll-behavior:auto}body.motion-paused *{scroll-behavior:auto!important}
@media(min-width:1500px){.hero{padding-block:95px;min-height:740px}}
@media(max-width:1100px){.wrap{width:calc(100% - 64px)}.site-header{padding-inline:32px;height:82px}.hero{gap:30px;padding-block:65px;min-height:590px}.hero h1{font-size:48px}.hero-intro{font-size:15px}.hero-actions{gap:18px}.button{padding:12px 16px;gap:22px}.basics{gap:55px}.family-layout,.notes,.sources{gap:50px}.family-tag{display:none}.family-list article{padding-inline:12px}.device-panel{gap:40px}.section-head>p{font-size:13px}.protocol-grid article{padding:23px}.hero-note{font-size:10px;gap:6px}.hero-figure figcaption{font-size:10px}.site-header nav{gap:23px}}
@media(max-width:800px){.wrap{width:calc(100% - 40px)}.site-header{height:76px;padding-inline:20px;gap:16px}.brand{font-size:16px;gap:9px}.brand svg{width:28px}.brand small{font-size:9px;letter-spacing:1px}.site-header nav{display:none}.motion-toggle{font-size:11px;padding:7px 10px}.hero{grid-template-columns:1fr;padding-block:48px;gap:40px;min-height:0}.hero-copy{max-width:600px}.hero h1{font-size:55px;line-height:1.2}.hero .eyebrow{font-size:9px;margin-bottom:24px}.hero-intro{font-size:16px;margin-top:23px}.hero-actions{margin-top:27px;gap:25px}.hero-note{margin-top:22px;font-size:11px;gap:9px}.hero-figure{max-width:590px;width:100%;margin-inline:auto;transform:none}.hero-figure figcaption{font-size:11px}.chapter-rail a{font-size:11px;padding:16px 12px;gap:8px}.chapter-rail b{display:none}.chapter-rail a:first-child{padding-left:4px}.chapter-rail span{font-size:10px}.section{padding-block:65px}.basics{grid-template-columns:1fr;gap:32px}.section-lead>p:not(.eyebrow){max-width:640px;font-size:14px}.section-lead .source-inline{margin-top:20px}.section-lead h2 br{display:none}.language-card{padding:25px;max-width:620px;width:100%}.section-head{display:block;margin-bottom:28px}.section-head>p{margin-top:16px;font-size:13px}.section-head>p br{display:none}.lab-section{padding-block:55px}.takeaway{gap:12px;align-items:flex-start}.takeaway p{font-size:12px}.why-grid{grid-template-columns:1fr;gap:30px}.why-grid article{padding-top:20px}.why-grid h3{margin-block:10px;font-size:20px}.detail-sample{margin-top:15px}.family-section{padding-block:55px}.family-layout{grid-template-columns:1fr;gap:30px}.family-tip{margin-top:20px!important}.family-list article{padding:20px 13px;gap:20px}.family-tag{display:inline-block}.family-no{font-size:28px;min-width:64px}.family-list p{font-size:11px}.device-panel{grid-template-columns:1fr;gap:25px;padding-block:25px 30px}.device-illustration{min-height:230px}.device-story h3{font-size:23px;max-width:none}.device-tags{margin-top:15px}.gateway-note{padding:23px 20px;gap:15px;align-items:flex-start}.gateway-note h3{font-size:16px}.gateway-note p{font-size:12px}.gateway-symbol{font-size:28px}.protocol-section{padding-bottom:60px}.protocol-grid{grid-template-columns:1fr}.protocol-grid article{padding:25px;border-right:0;border-bottom:1px solid var(--line)}.protocol-message{min-height:0;padding-top:17px;margin-top:20px}.protocol-grid h3{font-size:28px}.notes,.sources{grid-template-columns:1fr;gap:30px}.notes .section-lead h2 br{display:none}.sources{padding-block:10px 40px}.source-links{gap:16px 25px}.site-footer{flex-wrap:wrap;padding-block:28px;gap:14px}.site-footer p{order:3;width:100%}.site-footer small{font-size:9px}.back-top{margin-left:auto}summary{font-size:14px;padding:20px 0}.eyebrow{font-size:10px;margin-bottom:17px}h2{font-size:30px;letter-spacing:-.6px}html{scroll-padding-top:90px}}
@media(max-width:400px){.hero h1{font-size:47px}.hero .eyebrow{letter-spacing:1px}.chapter-rail a{font-size:10px;padding-inline:8px}.chapter-rail span{font-size:9px}.family-tag{display:none}.device-tabs{gap:22px}.device-tabs button{font-size:13px}.hero-note{font-size:10px}.source-links{gap:15px}.source-links a{font-size:10px}.language-card{padding:20px}.hero-actions{gap:18px}.text-link{font-size:12px}.figure-top{padding-inline:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.flow-path,.packet-label{animation:none}.button{transition:none}}

/* Presentation controls and bilingual layouts. Keep the original approachable visual style. */
.header-controls{display:flex;align-items:center;gap:14px;flex-shrink:0}
.language-switch{display:flex;align-items:center;border:1px solid var(--line);border-radius:6px;padding:3px;gap:2px;background:#edf2e7}
.language-switch button{font-size:12px;font-weight:550;line-height:1.4;min-width:43px;min-height:33px;padding:6px 9px;border:0;border-radius:3px;background:transparent;color:#5e725d}
.language-switch button[aria-pressed="true"]{background:var(--ink);color:#fff}
.language-switch button:hover:not([aria-pressed="true"]){background:#dfe8d8;color:var(--ink)}
.hero-figure{transform:none;box-shadow:0 7px 22px #17372d08}
.integration-section{padding-block:62px 72px;border-top:1px solid var(--line)}
.integration-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;margin-top:30px}
.integration-grid article{border-left:2px solid #a6bd99;padding-left:22px;min-width:0}
.integration-grid .integration-number,.integration-grid .feature-number{font:11px var(--mono);color:var(--green);letter-spacing:1px}
.integration-grid h3{font-size:19px;line-height:1.6;margin-block:12px 10px}
.integration-grid p{font-size:14px;line-height:1.9;color:var(--muted)}
.integration-footnote,.integration-note{font-size:12px;color:var(--muted);margin-top:27px}
html[lang="en"] .brand small{font-size:9px;letter-spacing:.3px}
html[lang="en"] .site-header nav{gap:24px;font-size:12px}
html[lang="en"] .hero h1{font-size:clamp(39px,4.1vw,59px);letter-spacing:-1.8px;line-height:1.12;max-width:620px}
html[lang="en"] .hero-intro{font-size:16px;line-height:1.8;max-width:510px}
html[lang="en"] .hero-actions{gap:24px;flex-wrap:wrap}
html[lang="en"] .hero-note{gap:7px;font-size:10px;flex-wrap:wrap;line-height:1.7}
html[lang="en"] .hero-figure figcaption{font-size:10px;gap:10px}
html[lang="en"] .figure-top{font-size:11px}
html[lang="en"] h2{font-size:clamp(28px,2.9vw,38px);line-height:1.28;letter-spacing:-1px}
html[lang="en"] .section-head>p{flex-shrink:1;max-width:370px}
html[lang="en"] .section-lead>p:not(.eyebrow){max-width:440px}
html[lang="en"] .chapter-rail a{font-size:12px;line-height:1.65;min-width:0}
html[lang="en"] .four-tabs{gap:4px}
html[lang="en"] .four-tabs button{font-size:11px;padding:10px 4px;overflow-wrap:normal}
html[lang="en"] .concept-reading>span:first-child{font-size:45px}
html[lang="en"] .concept-reading>span:nth-child(2){font-size:14px}
html[lang="en"] #language-panel h3{font-size:21px;line-height:1.5}
html[lang="en"] #concept-copy{min-height:68px;line-height:1.8}
html[lang="en"] .family-list article{gap:18px}
html[lang="en"] .family-list h3{font-size:15px}
html[lang="en"] .family-tag{font-size:9px}
html[lang="en"] .family-list p{line-height:1.7}
html[lang="en"] .device-story h3{font-size:26px;line-height:1.35}
html[lang="en"] .device-panel{min-height:380px}
html[lang="en"] .protocol-grid h3{font-size:26px}
html[lang="en"] .protocol-message{min-height:90px}
html[lang="en"] .source-links{gap:14px 25px}
html[lang="en"] .source-links a{font-size:11px}
html[lang="en"] .site-footer p{max-width:540px}
@media(max-width:1150px){.site-header{gap:18px}.site-header nav{gap:18px}.header-controls{gap:9px}html[lang="en"] .site-header nav{gap:15px;font-size:11px}.hero-actions{flex-wrap:wrap}.family-list article{min-width:0}.family-list article>div{min-width:0}}
@media(max-width:960px){.site-header nav{display:none}.hero{gap:30px}html[lang="en"] .hero h1{font-size:43px}html[lang="en"] .family-no{min-width:58px}html[lang="en"] .family-list article{gap:13px}html[lang="en"] .section-head>p{max-width:300px}}
@media(max-width:800px){.integration-section{padding-block:45px 55px}.integration-grid{grid-template-columns:1fr;gap:25px}.integration-grid article{padding-left:19px}.integration-grid h3{font-size:19px;margin-block:9px}.header-controls{gap:9px}.language-switch button{min-width:38px;min-height:33px;padding:6px 8px;font-size:11px}html[lang="en"] .hero h1{font-size:clamp(40px,7.8vw,57px);max-width:600px}html[lang="en"] .hero-intro{font-size:15px}html[lang="en"] .section-head>p{max-width:100%}html[lang="en"] .chapter-rail a{font-size:10px;gap:8px}html[lang="en"] .family-tag{display:none}html[lang="en"] #concept-copy{min-height:0}html[lang="en"] .device-panel{min-height:0}html[lang="en"] .protocol-message{min-height:0}html[lang="en"] .site-footer p{max-width:none}.section-lead h2 br{display:none}.hero-figure figcaption{flex-wrap:wrap}.site-header{height:auto;min-height:76px;padding-block:13px}}
@media(max-width:550px){.site-header{flex-wrap:wrap;gap:10px 16px}.brand small{font-size:9px}.motion-toggle{font-size:0;min-width:34px;min-height:38px;justify-content:center;padding:6px;gap:0}.motion-toggle>span:first-child{font-size:17px;line-height:1}#motion-label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.header-controls{gap:7px}.language-switch{padding:2px}.language-switch button{min-width:36px;padding:7px 7px}.brand svg{width:25px}.brand{font-size:15px;gap:7px}html[lang="en"] .brand small{font-size:8px;letter-spacing:0}html[lang="en"] .hero h1{font-size:42px}html[lang="en"] .hero-actions{gap:19px}html[lang="en"] .hero .eyebrow{font-size:9px;letter-spacing:1.3px}html[lang="en"] .four-tabs button{font-size:10px}html[lang="en"] .device-tabs{gap:19px}html[lang="en"] .device-tabs button{font-size:12px}html[lang="en"] .chapter-rail{grid-template-columns:1fr}html[lang="en"] .chapter-rail a{font-size:12px;border-right:0;border-bottom:1px solid var(--line);padding:12px 7px}html[lang="en"] .chapter-rail a:last-child{border-bottom:0}html[lang="en"] .chapter-rail b{display:block}html[lang="en"] .source-links{grid-template-columns:1fr}html[lang="en"] .concept-reading>span:first-child{font-size:38px}html[lang="en"] .concept-reading>span:nth-child(2){font-size:12px}.integration-grid p{font-size:13px}}