:root{color-scheme:dark;--bg:#0c1418;--surface:#111e24;--line:#29383e;--ink:#e8f0ee;--muted:#a0b4ba;--accent:#88e8ce;--orange:#f6bd79;--blue:#76baff;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;font-synthesis:none;scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}a,button,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:6px}::selection{background:#88e8ce;color:#0c1418}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}.skip{position:fixed;top:-70px;left:20px;background:var(--accent);color:var(--bg);padding:12px;z-index:20}.skip:focus{top:8px}.preview-banner{background:#192b30;color:#bed1d3;text-align:center;font-size:13px;padding:8px 18px;letter-spacing:.02em;border-bottom:1px solid var(--line)}.header{height:94px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:650;letter-spacing:-.7px}.brand img{width:35px;height:35px}.brand small{font-size:12px;font-weight:450;letter-spacing:.15em;color:var(--muted);margin-left:7px}.nav{display:flex;align-items:center;gap:32px;font-size:14px}.nav a:hover,.text-link:hover{color:var(--accent)}.language{border-left:1px solid var(--line);padding-left:26px;color:var(--accent)}.hero{padding:90px 0 80px}.eyebrow{font-family:Consolas,monospace;font-size:13px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;margin:0 0 24px}.hero-top{display:grid;grid-template-columns:1.3fr 1fr;gap:72px;align-items:end;margin-bottom:58px}h1{font-size:clamp(44px,4.8vw,68px);line-height:1.12;letter-spacing:-2.6px;font-weight:550;margin:0}h1 span{color:var(--accent)}.hero-copy{max-width:425px;justify-self:end;padding-bottom:3px}.hero-copy p{color:var(--muted);margin:0 0 28px;font-size:17px}.actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap}.primary{background:var(--accent);color:#0a2925;padding:13px 23px;font-weight:650;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:20px;border-radius:5px;transition:background .18s}.primary:hover{background:#adf8e3}.primary .arrow{font-size:19px}.text-link{font-size:14px}.workbench{border:1px solid #355159;background:#101b21;border-radius:12px;overflow:hidden;box-shadow:0 25px 70px #0004}.workbench-bar{height:54px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 24px;background:#16242b;border-bottom:1px solid var(--line);font:13px Consolas,monospace;color:var(--muted)}.workbench-bar strong{color:var(--ink);font-weight:400}.drawing-panels{display:grid;grid-template-columns:1fr 1fr}.drawing{padding:22px 28px 8px;min-width:0;position:relative;background-image:radial-gradient(#263940 .7px,transparent .7px);background-size:20px 20px}.drawing+.drawing{border-left:1px solid var(--line)}.drawing-title{display:flex;justify-content:space-between;font:12px Consolas,monospace;letter-spacing:.07em;color:#9fb3ba}.drawing-title b{font-weight:400;color:var(--accent)}.drawing svg{width:100%;height:auto;display:block;aspect-ratio:560/270}.diagram-label{font:12px Consolas,monospace;fill:#c6d5d9}.diagram-tiny{font:10px Consolas,monospace;fill:#8fa7af}.diagram-outline{fill:#13252b;stroke:#67868d;stroke-width:1.2}.diagram-pad{fill:#70868a}.net{fill:none;stroke-width:3;stroke:#48606c;transition:stroke .22s,filter .22s}.net.active{stroke:var(--accent);filter:drop-shadow(0 0 4px #88e8ce44)}.net[data-net="sda"].active{stroke:var(--blue)}.net[data-net="power"].active{stroke:var(--orange)}.diagram-selected{fill:var(--accent)}.demo-controls{padding:18px 24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.net-buttons{display:flex;gap:7px}.net-buttons button{border:1px solid transparent;background:transparent;border-radius:4px;color:var(--muted);padding:6px 14px;cursor:pointer;font:13px Consolas,monospace;display:flex;gap:8px;align-items:center}.net-buttons button::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%}.net-buttons button[data-net="sda"]::before{background:var(--blue)}.net-buttons button[data-net="power"]::before{background:var(--orange)}.net-buttons button[aria-pressed="true"]{background:#23383d;color:var(--ink);border-color:#3d6466}.demo-note{margin:0;color:var(--muted);font-size:12px}.hero-caption{display:flex;justify-content:space-between;gap:20px;margin-top:17px;color:var(--muted);font-size:13px}.hero-caption span:first-child{color:var(--accent)}.section{padding:76px 0;border-top:1px solid var(--line);scroll-margin-top:25px}.section-heading{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:end;margin-bottom:44px}h2{font-size:clamp(30px,3vw,42px);line-height:1.23;letter-spacing:-1.3px;font-weight:500;margin:0}.section-heading p{margin:0;color:var(--muted);max-width:430px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:42px}.feature{border-top:1px solid #43615f;padding-top:25px}.index{font:13px Consolas,monospace;color:var(--accent)}h3{font-size:20px;font-weight:550;margin:21px 0 12px;line-height:1.4}.feature p{color:var(--muted);font-size:15px;margin:0}.formats{display:flex;gap:24px 40px;flex-wrap:wrap;margin:30px 0 0;color:#bbcacd;font:16px Consolas,monospace}.format-note{font-size:13px!important;margin-top:24px!important}.release{background:#15252b;border:1px solid #34524f;padding:38px 42px;border-radius:8px;display:grid;grid-template-columns:1fr 1fr;gap:70px}.release h3{margin-top:0;font-size:25px}.release p{color:var(--muted);margin-bottom:0;font-size:15px}.release-state{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:0 0 17px;margin-bottom:18px}.tag{border:1px solid #4a6765;color:var(--accent);font-size:12px;padding:4px 9px;border-radius:3px;white-space:nowrap}.release small{color:var(--muted);font-size:13px;display:block}.guide{display:grid;grid-template-columns:1fr 1.5fr;gap:90px}.guide ol{list-style:none;counter-reset:steps;margin:0;padding:0}.guide li{counter-increment:steps;display:grid;grid-template-columns:35px 1fr;gap:20px;padding:24px 0;border-top:1px solid var(--line)}.guide li:before{content:"0" counter(steps);color:var(--accent);font:13px Consolas,monospace;padding-top:5px}.guide li:first-child{padding-top:0;border:0}.guide h3{margin:0 0 7px;font-size:18px}.guide p{color:var(--muted);font-size:15px;margin:0}.faq{margin-top:44px}.faq details{padding:20px 0;border-top:1px solid var(--line)}.faq summary{cursor:pointer;font-size:17px}.faq p{color:var(--muted);max-width:760px;font-size:15px}.footer{border-top:1px solid var(--line);padding:28px 0 38px;display:flex;align-items:center;justify-content:space-between;gap:25px;font-size:13px;color:var(--muted)}.footer nav{display:flex;gap:25px}.legal{max-width:760px;margin:60px auto 90px}.legal h1{font-size:44px}.legal h2{font-size:25px;margin:36px 0 14px}.legal p{color:var(--muted)}.legal a{color:var(--accent);text-decoration:underline}[lang="zh-CN"] h1{line-height:1.28;letter-spacing:-1.5px;font-weight:580}[lang="zh-CN"] .hero-top{grid-template-columns:1.3fr 1fr}[lang="zh-CN"] h2{letter-spacing:-.5px}body[data-net="sda"] .drawing-title b{color:var(--blue)}body[data-net="power"] .drawing-title b{color:var(--orange)}
@media(min-width:1600px){.hero{padding-top:105px}.hero-top{margin-bottom:64px}}@media(max-width:950px){.hero{padding:60px 0}.hero-top{grid-template-columns:1fr!important;gap:30px}.hero-copy{justify-self:start;max-width:600px}.features{gap:25px}.section-heading{gap:35px}.release{gap:32px}.guide{gap:35px}.demo-note{max-width:230px}}@media(max-width:640px){.wrap{width:calc(100% - 36px)}.preview-banner{font-size:12px}.header{height:78px;gap:14px}.brand{font-size:22px}.brand small{display:none}.nav{gap:17px;font-size:13px}.nav .desktop-only{display:none}.language{padding-left:15px}.hero{padding:45px 0}.hero-top{gap:23px;margin-bottom:34px}.eyebrow{font-size:12px;margin-bottom:20px}h1{font-size:42px;letter-spacing:-1.8px}.hero-copy p{font-size:16px}.actions{gap:20px}.drawing-panels{grid-template-columns:1fr}.drawing{padding:18px 15px 2px}.drawing+.drawing{border-left:0;border-top:1px solid var(--line)}.workbench-bar{height:46px;padding:0 15px;font-size:11px}.workbench-bar .desktop-only{display:none}.demo-controls{padding:14px;align-items:start;flex-direction:column;gap:9px}.demo-note{max-width:none}.hero-caption{flex-direction:column;gap:4px;font-size:12px}.section{padding:50px 0}.section-heading{grid-template-columns:1fr;gap:18px;margin-bottom:32px}.features{grid-template-columns:1fr;gap:32px}.feature h3{margin-top:14px}.release{grid-template-columns:1fr;padding:26px 23px;gap:28px}.release-state{flex-wrap:wrap}.guide{grid-template-columns:1fr;gap:35px}.footer{flex-direction:column;align-items:start}.legal{margin:40px 0}.legal h1{font-size:36px}.formats{gap:18px 26px;font-size:15px}}@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.hero-formats{display:flex;align-items:center;justify-content:space-between;gap:20px 32px;flex-wrap:wrap;margin:-20px 0 32px}.hero-formats ul{display:flex;gap:12px 28px;flex-wrap:wrap;list-style:none;margin:0;padding:0;color:var(--ink);font-size:15px;font-weight:550}.formats-growing{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--accent)}.formats-growing::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}@media(max-width:640px){.hero-formats{margin:0 0 28px;gap:14px}.hero-formats ul{gap:8px 16px;font-size:13.5px}}
.screenshots.section{padding:28px 0 38px;border-top:0}.screenshots h2{font-size:27px;margin-bottom:24px}.screenshot-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.screenshot-grid figure{margin:0;min-width:0}.screenshot-grid figure:first-child{grid-column:1/-1}.screenshot-grid img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:10px;background:var(--surface);transition:border-color .15s}.screenshot-grid a:hover img{border-color:var(--accent)}.screenshot-grid figcaption{color:var(--muted);font-size:14px;padding-top:12px}.screenshots .demo-note{margin:24px 0 18px}.screenshots .demo-note a{color:var(--accent)}.connection-demo{margin:10px 0 20px;border-top:1px solid var(--line)}.connection-demo summary{padding:18px 0;cursor:pointer;color:var(--muted)}.connection-demo .workbench{margin-top:0}@media(max-width:640px){.screenshot-grid{grid-template-columns:1fr}.screenshot-grid figure:first-child{grid-column:auto}.screenshots h2{font-size:24px}}