@charset "UTF-8";

:root{--paper:#f6f4ed;--ink:#17334a;--muted:#617069;--teal:#0f9f91;--teal-dark:#087d74;--mint:#dce9df;--yellow:#f5b942;--line:#d5d9ce;--white:#fffdf7;--shell:min(1180px,calc(100% - 64px));font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid var(--yellow);outline-offset:5px}::selection{background:#bce9d9;color:var(--ink)}.page-shell{width:var(--shell);margin-inline:auto}.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:10px 18px;background:var(--ink);color:white;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{width:var(--shell);min-height:100px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:30px;border-bottom:1px solid var(--line)}.site-brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.brand-symbol{width:43px;height:43px;color:var(--teal)}.site-brand span{display:flex;flex-direction:column;line-height:1.1}.site-brand strong{font-size:25px;letter-spacing:-1px}.site-brand small{margin-top:6px;font-size:11px;letter-spacing:1px;color:var(--muted)}.site-nav{display:flex;align-items:center;gap:32px;font-size:14px}.site-nav a{min-height:44px;display:flex;align-items:center;gap:4px;position:relative;color:#43544f}.site-nav a:hover{color:var(--teal-dark)}.site-nav a[aria-current]{color:var(--ink);font-weight:700}.site-nav a[aria-current]::after{content:"";position:absolute;bottom:2px;left:50%;width:5px;height:5px;border-radius:50%;background:var(--teal)}.nav-arrow{font-size:12px;color:var(--teal)}.header-cta{display:flex;align-items:center;gap:20px;background:var(--ink);color:white;border-radius:8px;padding:11px 18px;font-size:13px;font-weight:700;min-height:44px}.header-cta:hover{background:#254b65}
.hero{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:35px;min-height:680px;padding-block:72px 78px}.kicker{display:flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:1.8px;color:#526a61;text-transform:uppercase}.kicker>span{width:22px;height:2px;background:var(--teal)}.hero h1{font-size:clamp(48px,5vw,72px);line-height:1.17;letter-spacing:-4px;margin:26px 0 25px;font-weight:800}.circled{position:relative;color:var(--teal-dark);white-space:nowrap}.circled::after{content:"";position:absolute;inset:-2px -13px -4px -10px;border:2px solid var(--yellow);border-radius:50%;transform:rotate(-5deg);z-index:-1}.hero-lead{max-width:460px;color:var(--muted);font-size:16px;line-height:1.95}.hero-actions{display:flex;align-items:center;gap:30px;margin-top:35px}.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:52px;padding:13px 23px;border-radius:8px;font-size:14px;font-weight:700;transition:transform .18s,background .18s}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--teal);color:white;box-shadow:0 6px 0 #08766c}.button-primary:hover{background:var(--teal-dark)}.button-dark{background:var(--ink);color:white}.button-dark:hover{background:#28506a}.text-link{font-size:14px;font-weight:700;border-bottom:1px solid #a5b0a7;padding-block:10px}.text-link span{margin-left:12px}.hero-notes{display:flex;gap:0;list-style:none;padding:0;margin:35px 0 0;color:#6a7770;font-size:12px}.hero-notes li{display:flex;align-items:center}.hero-notes li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--teal);margin:0 10px}.hero-notes li:first-child::before{margin-left:0}
.hero-visual{position:relative;min-width:0;background:#eaf0e5;border:1px solid #d3ddd0;border-radius:24px;padding:24px 22px 18px;isolation:isolate}.hero-visual::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.35;background-image:radial-gradient(#90a899 1px,transparent 1px);background-size:15px 15px}.visual-label{position:absolute;right:24px;top:21px;font:10px ui-monospace,monospace;letter-spacing:1px;color:#6a7a70}.world{display:block;width:100%;height:auto;max-height:470px}.code-note{position:absolute;right:-16px;bottom:45px;width:230px;background:var(--ink);color:#eaf5ef;border-radius:12px;padding:15px 18px 14px;box-shadow:0 15px 35px #17334a2b;transform:rotate(1.5deg)}.code-note-top{display:flex;justify-content:space-between;align-items:center;font:9px ui-monospace,monospace;color:#9db0b7;border-bottom:1px solid #ffffff18;padding-bottom:10px}.code-note-top>span:first-child{display:flex;gap:4px}.code-note-top i{width:5px;height:5px;background:#66808b;border-radius:50%}.code-note pre,.try-code pre{font:13px/1.9 ui-monospace,"Cascadia Code",monospace;margin:12px 0}.code-muted{color:#8ca0a8}.code-command{color:#7ce2c3}.code-number{color:#f6c863}.demo-button{width:100%;min-height:38px;border:1px solid #ffffff2b;border-radius:6px;background:#ffffff0d;color:white;font-size:11px;cursor:pointer}.demo-button:hover{background:#ffffff1c}.demo-button span{color:var(--yellow);margin-right:6px}.demo-status{position:absolute;left:24px;bottom:14px;margin:0;font-size:11px;color:#5f7368}.visual-stamp{position:absolute;left:-18px;top:70px;border:2px solid #8eaa99;border-radius:50%;width:65px;height:65px;display:grid;place-content:center;text-align:center;font:9px/1.4 ui-monospace,monospace;color:#64816f;transform:rotate(-14deg)}#demo-robot{transition:transform 1.6s cubic-bezier(.4,0,.2,1)}.hero-visual.is-running #demo-robot{transform:translate(175px,140px)}.hero-visual.is-running .route-line{stroke:var(--teal-dark);stroke-dasharray:8 7}.hero-visual.is-running .demo-button{background:#ffffff20}
.facts{background:var(--ink);color:white}.facts-grid{min-height:135px;display:grid;grid-template-columns:1fr 1fr 1fr 1.35fr;align-items:center;gap:30px}.facts-grid>div{display:flex;align-items:center;gap:15px}.facts-grid>div>strong{font-size:43px;font-weight:500;letter-spacing:-2px;color:var(--yellow)}.facts-grid>div>span{font-size:13px;font-weight:700}.facts-grid small{display:block;color:#9fb1b8;font-size:10px;font-weight:400;margin-top:4px}.facts-grid>p{border-left:1px solid #ffffff28;padding-left:32px;font-size:13px;line-height:1.8;color:#b8c6ca}.facts-grid>p strong{color:white}
.section-space{padding-block:105px}.section-heading h2,.path-intro h2,.try-copy h2{font-size:clamp(35px,4vw,48px);line-height:1.3;letter-spacing:-2px;margin:18px 0}.section-heading>p:last-child,.path-intro>p,.try-copy>p{color:var(--muted);font-size:14px;line-height:1.9}.learning-loop{display:grid;grid-template-columns:.85fr 2fr;gap:65px}.loop-steps{display:grid;grid-template-columns:repeat(3,1fr);list-style:none;margin:0;padding:0;gap:24px}.loop-steps li{position:relative;border-top:1px solid #c8d0c6;padding-top:24px}.step-number{position:absolute;right:0;top:20px;font:11px ui-monospace,monospace;color:#89978e}.step-icon{height:75px;font:700 30px ui-monospace,monospace;color:var(--teal)}.icon-eye{font-size:46px;line-height:65px}.icon-retry{font-size:46px;line-height:65px;color:#d79824}.loop-steps h3{font-size:17px;margin:14px 0 10px}.loop-steps p{font-size:13px;color:var(--muted);line-height:1.9;margin:0}
.possibilities{background:#e8eee5}.section-heading.horizontal{display:flex;align-items:end;justify-content:space-between;margin-bottom:45px}.section-heading.horizontal h2{margin-bottom:0}.section-heading.horizontal>p{padding-bottom:6px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature-card{background:var(--white);border:1px solid #d4ded2;border-radius:15px;padding:24px 26px 28px;overflow:hidden}.feature-art{height:180px;margin:-24px -26px 25px;background:#dce9df;display:flex;align-items:center;justify-content:center;gap:12px}.feature-art>span:not(.star){background:var(--white);border:1px solid #aac4b3;padding:9px 13px;border-radius:6px;font-size:12px;box-shadow:0 4px 0 #b5caba}.feature-art>b{color:#6b8d78}.feature-art .star{font-size:40px;color:var(--yellow);filter:drop-shadow(0 3px 0 #b48220)}.card-index{font:10px ui-monospace,monospace;letter-spacing:1px;color:var(--teal-dark)}.feature-card h3{font-size:20px;letter-spacing:-.5px;margin:12px 0}.feature-card>p:not(.card-index){font-size:13px;color:var(--muted);line-height:1.9;min-height:74px}.tag-list{display:flex;gap:7px;list-style:none;padding:0;margin:20px 0 0}.tag-list li{border:1px solid #d7ded4;border-radius:20px;padding:3px 10px;font-size:10px;color:#5f7168}.feature-sense .feature-art{background:#e8e4f0}.sensor-art{position:relative}.sensor-robot{width:67px;height:58px;border-radius:17px;background:var(--ink);color:#7ce2c3;display:grid;place-content:center;font-size:30px;letter-spacing:8px;padding-left:8px}.sensor-art i{position:absolute;width:100px;height:100px;border:1px solid #a99dc4;border-radius:50%;opacity:.7}.sensor-art i:nth-of-type(2){width:135px;height:135px;opacity:.45}.sensor-art i:nth-of-type(3){width:170px;height:170px;opacity:.25}.sensor-art>span{position:absolute;right:18px;bottom:15px;background:var(--white);border-radius:10px;padding:5px 10px;font-size:10px;color:#65597d}.feature-create .feature-art{background:#f2e7ce;display:grid;grid-template-columns:repeat(3,35px);grid-auto-rows:35px;gap:5px;align-content:center}.map-art span{background:#d4c8a9;border:1px solid #b6a782;border-radius:4px}.map-art span:nth-child(2),.map-art span:nth-child(5){background:#86ae8e;border-color:#658a6c}.map-art span:nth-child(3){background:var(--yellow);border-color:#c8952f}.map-art b{position:absolute;font-size:24px;color:#8a754c}.card-link{display:inline-flex;gap:18px;margin-top:17px;font-size:12px;font-weight:700;color:var(--teal-dark);border-bottom:1px solid #9ccabd;padding-bottom:5px}
.learning-path{display:grid;grid-template-columns:.9fr 1.3fr;gap:100px}.path-intro>p{max-width:350px;margin-bottom:28px}.path-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.path-list li{display:grid;grid-template-columns:38px 1fr auto;gap:20px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line)}.path-list>li>span{font:12px ui-monospace,monospace;color:var(--teal)}.path-list h3{font-size:16px;margin:0 0 4px}.path-list p{font-size:12px;color:var(--muted);margin:0}.path-list small{font-size:10px;border:1px solid #cdd5ca;border-radius:20px;padding:4px 11px;color:#6d7b72}
.try-section{background:#e1eee5;border:1px solid #ccddce;border-radius:20px;margin-bottom:105px;padding:65px 75px;display:grid;grid-template-columns:1fr 1fr;gap:85px;align-items:center;position:relative;overflow:hidden}.try-section::after{content:"★";position:absolute;right:-25px;top:-65px;font-size:200px;color:#c5dfcd;transform:rotate(15deg);z-index:0}.try-code{background:var(--ink);color:white;border-radius:12px;padding:22px 28px;transform:rotate(-2deg);box-shadow:12px 14px 0 #c3d6c7;z-index:1}.try-code-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ffffff20;padding-bottom:13px;font-size:11px;color:#b9c8ca}.try-code-head button{border:1px solid #ffffff30;border-radius:5px;background:transparent;color:#d6e6e5;font-size:10px;padding:6px 10px;min-height:32px;cursor:pointer}.try-code-head button:hover{background:#ffffff15}.try-code pre{font-size:15px;line-height:2.1;margin:18px 0 5px}.try-copy{position:relative;z-index:1}.try-copy h2{margin-top:14px}.try-copy .button{margin-top:15px}.copy-status{display:block;font-size:11px;color:var(--teal-dark);margin-top:15px;min-height:18px}
.site-footer{background:#142d40;color:white;padding-top:55px}.footer-main{display:flex;justify-content:space-between;padding-bottom:50px}.footer-brand .brand-symbol{color:#66cbb2}.footer-brand small{color:#a9bbc0}.footer-links{display:flex;gap:90px}.footer-links>div{display:flex;flex-direction:column;gap:8px;min-width:120px}.footer-links strong{font-size:11px;color:#8ea5ac;margin-bottom:6px}.footer-links a{font-size:12px;color:#d7e2e2;min-height:28px}.footer-links a:hover{color:#7ce2c3}.footer-bottom{border-top:1px solid #ffffff17;min-height:68px;display:flex;align-items:center;justify-content:space-between;color:#8ea5ac;font-size:10px}.footer-bottom a{min-height:44px;display:flex;align-items:center;color:#c1d1d3}
@media(max-width:1050px){.site-nav{gap:20px}.hero{gap:20px}.code-note{right:5px;width:205px}.learning-loop{gap:35px}.loop-steps{gap:18px}.try-section{gap:50px;padding:55px 45px}.learning-path{gap:60px}}
@media(max-width:900px){:root{--shell:min(100% - 40px,720px)}.site-header{flex-wrap:wrap;gap:10px;padding-block:18px}.site-nav{order:3;width:100%;justify-content:space-between;border-top:1px solid var(--line);padding-top:8px}.hero{grid-template-columns:1fr;padding-block:55px;gap:55px}.hero-copy{max-width:620px}.hero-lead{max-width:560px}.hero-visual{width:min(100%,620px);margin:auto}.facts-grid{grid-template-columns:repeat(3,1fr);padding-block:25px}.facts-grid>p{display:none}.learning-loop{grid-template-columns:1fr}.section-heading br{display:none}.loop-steps{margin-top:10px}.feature-grid{grid-template-columns:1fr}.feature-card{display:grid;grid-template-columns:220px 1fr;column-gap:28px}.feature-art{grid-row:1/6;height:auto;min-height:260px;margin:-24px 0 -28px -26px;flex-direction:column}.feature-card>p:not(.card-index){min-height:0}.tag-list{margin-bottom:0}.sensor-art i{display:none}.feature-create .feature-art{align-content:center}.learning-path{grid-template-columns:1fr;gap:40px}.path-intro>p{max-width:none}.try-section{grid-template-columns:1fr;gap:50px}.try-code{max-width:480px;width:100%;margin:auto}.try-copy{text-align:center}.try-copy .kicker{justify-content:center}}
@media(max-width:600px){:root{--shell:calc(100% - 32px)}html{scroll-padding-top:30px}.site-header{padding-block:14px;min-height:0}.brand-symbol{width:37px;height:37px}.site-brand strong{font-size:22px}.site-brand small{font-size:9px}.header-cta{display:none}.site-nav{gap:16px;justify-content:flex-start;overflow-x:auto;scrollbar-width:none}.site-nav a{font-size:12px;white-space:nowrap;flex:1;justify-content:center}.hero{padding-block:42px 50px;min-height:0}.kicker{font-size:9px;letter-spacing:1.2px}.hero h1{font-size:43px;letter-spacing:-2.5px;margin-top:20px}.hero-lead{font-size:14px}.hero-actions{gap:22px;margin-top:28px}.button{font-size:12px;padding:12px 17px;gap:16px}.text-link{font-size:12px}.hero-notes{font-size:10px;flex-wrap:wrap;gap:7px 0;margin-top:28px}.hero-visual{padding:15px 8px 35px;border-radius:17px}.visual-label{top:12px;right:15px;font-size:8px}.visual-stamp{left:-5px;top:42px;width:50px;height:50px;font-size:7px}.code-note{width:180px;right:3px;bottom:47px;padding:12px 14px}.code-note pre{font-size:11px;line-height:1.75}.demo-button{min-height:36px}.demo-status{font-size:9px;left:15px;bottom:14px}.facts-grid{gap:10px;min-height:110px}.facts-grid>div{display:block;text-align:center}.facts-grid>div>strong{font-size:32px;display:block;line-height:1.2}.facts-grid>div>span{font-size:10px}.facts-grid small{display:none}.section-space{padding-block:70px}.section-heading h2,.path-intro h2,.try-copy h2{font-size:34px;letter-spacing:-1.5px}.section-heading.horizontal{display:block;margin-bottom:30px}.section-heading.horizontal>p{margin-top:18px}.loop-steps{grid-template-columns:1fr;gap:30px}.loop-steps li{display:grid;grid-template-columns:60px 1fr;column-gap:15px;padding-top:18px}.step-icon{grid-row:1/3;height:auto;font-size:34px}.loop-steps h3{margin:0 0 6px}.loop-steps p{grid-column:2}.step-number{top:15px}.feature-card{display:block;padding:20px 22px 25px}.feature-art{height:170px;min-height:0;margin:-20px -22px 23px;flex-direction:row}.feature-create .feature-art{align-content:center}.feature-card h3{font-size:18px}.learning-path{gap:30px}.path-list li{grid-template-columns:25px 1fr;gap:12px;padding:20px 0}.path-list small{display:none}.path-list p{line-height:1.7}.try-section{width:calc(100% - 24px);padding:38px 22px;margin-bottom:70px;gap:40px}.try-code{padding:18px 20px;box-shadow:7px 8px 0 #c3d6c7}.try-code pre{font-size:13px}.try-copy>p{font-size:13px}.footer-main{display:block}.footer-links{margin-top:35px;gap:40px}.footer-links>div{min-width:0;flex:1}.footer-bottom{flex-wrap:wrap;gap:5px 20px;padding-block:15px}.footer-bottom a{margin-left:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}#demo-robot{transition:none}}