:root{--bg:#091321;--surface:#102136;--text:#edf5ff;--secondary:#b3c1d3;--muted:#91a5bd;--blue:#9bd8ff;--line:#293b52;--font:'Avenir Next','PingFang SC','Microsoft YaHei','Segoe UI',sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 var(--font);-webkit-font-smoothing:antialiased}
body::before{content:'';position:absolute;inset:0 0 auto;height:700px;pointer-events:none;z-index:-1;background:radial-gradient(ellipse at 80% 10%,#18345085,transparent 65%)}
.pointer-light{position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(420px circle at var(--pointer-x,-500px) var(--pointer-y,-500px),#21446330,transparent 70%)}
h1,h2,h3,p{margin:0}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}img{max-width:100%}button{cursor:pointer}::selection{background:var(--blue);color:var(--bg)}:focus-visible{outline:3px solid var(--blue);outline-offset:5px}
[hidden]{display:none!important}.shell{width:min(1120px,calc(100% - 64px));margin-inline:auto}.icon{display:block;width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}.icon--small{width:17px;height:17px}.symbol-library{position:absolute;width:0;height:0;overflow:hidden}
.skip-link{position:absolute;left:24px;top:12px;padding:10px 18px;background:var(--blue);color:var(--bg);z-index:5;transform:translateY(-200%);border-radius:6px}.skip-link:focus{transform:translateY(0)}
.site-header{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:650;flex:none}.brand-symbol{width:32px;height:32px;color:var(--blue)}.nav{display:flex;align-items:center;flex-wrap:wrap;gap:8px 26px;font-size:14px;color:var(--secondary)}.nav a{display:inline-flex;align-items:center;min-height:44px}.nav a:hover{color:var(--blue)}.nav-contact{gap:8px}
.hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:60px;align-items:center;padding-block:56px 52px}.hero h1{font-size:clamp(42px,4.5vw,62px);line-height:1.2;letter-spacing:-.035em;font-weight:650}.hero h1 span{display:block}.role{margin-top:20px;font-size:18px;color:var(--blue);font-weight:550}.intro-copy{margin-top:16px;color:var(--secondary);max-width:34em;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;margin-top:24px}.primary-link{min-height:46px;padding:9px 18px;display:inline-flex;align-items:center;justify-content:center;gap:14px;background:var(--blue);border:1px solid var(--blue);color:#102033;border-radius:8px;font-size:14px;font-weight:650;transition:background .15s,transform .15s}.primary-link:hover{background:#c3e8ff;transform:translateY(-2px)}.quiet-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:14px;color:var(--secondary)}.quiet-link:hover{color:var(--blue)}.background-tags{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:19px;color:var(--muted);font-size:12px}.background-tags span+span::before{content:'·';margin-right:16px;color:#58738e}
.hero-art{position:relative;height:316px;border:1px solid var(--line);border-radius:20px;background-color:#0d1c2e;background-image:linear-gradient(#7caad50b 1px,transparent 1px),linear-gradient(90deg,#7caad50b 1px,transparent 1px);background-size:26px 26px;overflow:hidden}.scene-label{position:absolute;left:24px;top:18px;font-size:10px;color:var(--muted);letter-spacing:.15em}.scene-label::before{content:'';display:inline-block;width:5px;height:5px;margin-right:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 12px #9bd8ff80}.portrait-frame{position:absolute;width:144px;height:144px;top:81px;left:28px;padding:6px;border:1px solid #47617d;border-radius:26px;background:#1c3048;box-shadow:0 16px 35px #020a1640;transform:translate(var(--scene-x,0),var(--scene-y,0));transition:transform .2s ease-out}.portrait{display:block;width:100%;height:100%;object-fit:cover;border-radius:19px}.wires{position:absolute;inset:0;width:100%;height:100%;fill:none}.wire-base{stroke:#395974;stroke-width:1}.wire-signal{stroke:var(--blue);stroke-width:1.5;stroke-dasharray:3 25;animation:wire-flow 4s linear infinite;opacity:.8}.capability{position:absolute;right:24px;display:flex;align-items:center;justify-content:flex-start;gap:9px;width:126px;min-height:43px;padding:8px 12px;border:1px solid #39536f;border-radius:8px;background:#132840;color:#d7ecfc;font-size:13px;transition:border-color .2s,background .2s,transform .2s}.capability:hover,.capability:focus-visible{border-color:var(--blue);background:#1d3c59;transform:translateX(-4px)}.capability .icon{color:var(--blue);width:17px;height:17px}.capability--code{top:55px}.capability--ai{top:135px}.capability--flow{top:215px}.art-caption{position:absolute;left:28px;bottom:19px;color:var(--muted);font-size:11px}.art-caption::before{content:'';display:inline-block;width:16px;height:1px;background:var(--blue);vertical-align:middle;margin-right:10px}
.section{margin-top:42px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.section-heading h2{font-size:27px;line-height:1.4;font-weight:600;letter-spacing:-.025em}.section-note{margin-top:7px;color:var(--secondary);font-size:14px}.eyebrow{margin-bottom:6px;color:var(--blue);font-size:10px;font-weight:600;letter-spacing:.15em}
.project-browser{display:grid;grid-template-columns:270px minmax(0,1fr);border:1px solid var(--line);border-radius:16px;background:#0d1c2e;overflow:hidden}.project-tabs{display:grid;align-content:start;border-right:1px solid var(--line);padding:12px;gap:4px;background:#0b192a}.project-tab{display:flex;align-items:center;gap:12px;text-align:left;border:1px solid transparent;background:transparent;min-height:62px;border-radius:9px;padding:12px;color:var(--secondary);font-size:14px;transition:background .2s,border-color .2s,color .2s}.project-tab:hover{background:#13283e;color:var(--text)}.project-tab[aria-selected=true]{background:#18314b;border-color:#365670;color:var(--text)}.project-tab .number{color:var(--muted);font:11px/1 monospace}.project-tab[aria-selected=true] .number{color:var(--blue)}.tab-arrow{margin-left:auto;width:15px;height:15px;opacity:0}.project-tab[aria-selected=true] .tab-arrow{opacity:1;color:var(--blue)}.project-panels{min-width:0}.project-panel{min-width:0;padding:28px 30px;min-height:354px}.project-panel.is-entering,.service-panel.is-entering{animation:panel-in .25s ease-out}.project-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px}.project-meta span:first-child{color:var(--blue)}.project-panel h3{margin-top:14px;font-size:24px;font-weight:600;line-height:1.4}.project-copy{margin-top:10px;max-width:42em;color:var(--secondary);font-size:14px;line-height:1.85}.flow{display:grid;grid-template-columns:minmax(0,1fr) 26px minmax(0,1fr) 26px minmax(0,1fr);gap:8px;align-items:center;margin-top:24px}.flow-node{min-width:0;min-height:104px;padding:14px 12px;border:1px solid #304d69;border-radius:10px;background:linear-gradient(145deg,#142c45,#102237);display:flex;flex-direction:column;justify-content:center;text-align:center;gap:7px}.flow-node small{font-size:10px;color:var(--muted);letter-spacing:.08em}.flow-node strong{font-size:13px;font-weight:550;line-height:1.7}.flow-node--output{border-color:#48778e;background:linear-gradient(145deg,#183b4b,#122b3b)}.flow-arrow{position:relative;color:#638eac}.flow-arrow .icon{width:24px;height:24px}.flow-arrow::after{content:'';position:absolute;left:0;top:10px;width:4px;height:4px;border-radius:50%;background:var(--blue);box-shadow:0 0 8px #9bd8ff;animation:signal-flow 2.4s ease-in-out infinite}.flow-arrow:nth-of-type(4)::after{animation-delay:1.2s}.project-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}.project-tags span,.project-tags a{padding:3px 9px;border:1px solid #2b4058;border-radius:5px;font-size:10px;color:var(--muted)}.project-tags a:hover{color:var(--blue);border-color:#567895}.practice-note{margin-top:12px;color:var(--muted);font-size:12px}
.service-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.service-tab{display:flex;align-items:center;justify-content:center;gap:10px;min-height:64px;border:1px solid var(--line);border-radius:10px;background:#0d1b2d;font-size:14px;color:var(--secondary);transition:border-color .2s,background .2s,transform .2s}.service-tab:hover{border-color:#567895;transform:translateY(-2px)}.service-tab[aria-selected=true]{color:var(--blue);border-color:#476d8d;background:#153049}.service-tab .icon{width:20px;height:20px}.service-panel{margin-top:12px;min-height:94px;display:flex;align-items:center;gap:24px;padding:20px 25px;border:1px solid var(--line);border-radius:10px;background:#101f31}.service-panel h3{font-size:16px;font-weight:600;flex:none;line-height:1.6}.service-panel p{font-size:14px;line-height:1.8;color:var(--secondary)}.delivery-track{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;margin-top:16px;font-size:12px;color:var(--muted)}.delivery-track .icon{width:15px;height:15px;color:#5e809e}
.content-section{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:start;margin-top:36px;padding-block:22px;border-block:1px solid var(--line)}.content-heading{font-size:17px;font-weight:600}.content-note{margin-top:5px;color:var(--secondary);font-size:13px}.content-links{display:flex;flex-wrap:wrap;gap:4px 18px}.social-link{display:inline-flex;min-height:44px;align-items:center;gap:6px;font-size:13px}.social-link:hover{color:var(--blue)}.social-link .icon{color:var(--muted)}.wechat-qr{font-size:12px;color:var(--secondary)}.wechat-qr summary{display:flex;align-items:center;gap:8px;width:fit-content;min-height:40px;cursor:pointer;list-style:none;color:var(--blue)}.wechat-qr summary::-webkit-details-marker{display:none}.wechat-qr summary::after{content:'+';margin-left:8px;font-size:18px}.wechat-qr[open] summary::after{content:'−'}.qr-panel{width:fit-content;padding:12px;margin-top:6px;border:1px solid var(--line);border-radius:10px;background:#14253b}.qr-panel img{display:block;width:200px;height:200px;padding:5px;background:white;border-radius:5px}.qr-panel p{margin-top:8px;font-size:12px;max-width:210px}
.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.product-card{position:relative;min-width:0;display:flex;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:12px;background:#0d1b2d;transition:transform .2s,border-color .2s,background .2s}.product-card:hover{transform:translateY(-4px);border-color:#537f9f;background:#11273e}.product-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;background:#1a3149;color:var(--blue);margin-bottom:12px}.product-icon .icon{width:20px;height:20px}.product-card h3{font-size:16px;font-weight:600;line-height:1.6;padding-right:9px}.product-card p{margin-top:6px;font-size:12px;color:var(--secondary);line-height:1.7}.product-arrow{position:absolute;right:18px;top:25px;color:var(--muted);width:16px;height:16px;transition:transform .2s}.product-card:hover .product-arrow{transform:translate(2px,-2px);color:var(--blue)}.product-card--play{border-color:#365670;background:linear-gradient(125deg,#142d46,#102338)}.business-tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px}.business-tools .product-card{flex-direction:row;align-items:center;gap:14px}.business-tools .product-icon{margin:0;flex:none}.business-tools .product-card h3{padding:0}.business-tools .product-arrow{position:static;margin-left:auto;flex:none}.business-tools .product-card p{margin-top:2px}
.cooperation{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:36px;padding:25px 28px;border:1px solid #365670;border-radius:14px;background:linear-gradient(110deg,#142d46,#102338)}.cooperation h2{font-size:21px;line-height:1.5;font-weight:600}.cooperation p{margin-top:6px;color:var(--secondary);font-size:13px}.cooperation .primary-link{flex:none}.site-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;min-height:100px;margin-top:36px;border-top:1px solid var(--line);padding-block:20px;color:var(--muted);font-size:12px}.site-footer a{display:inline-flex;align-items:center;min-height:44px}.site-footer a:hover{color:var(--blue)}
@keyframes wire-flow{to{stroke-dashoffset:-112}}@keyframes signal-flow{0%{transform:translateX(0);opacity:0}25%{opacity:1}75%{opacity:1}100%{transform:translateX(24px);opacity:0}}@keyframes panel-in{from{opacity:.55;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1050px){.hero{gap:28px}.hero-art{height:300px}.portrait-frame{left:20px;top:92px;width:118px;height:118px}.capability{right:14px;width:112px;font-size:12px;padding-inline:9px}.content-section{grid-template-columns:1fr;gap:10px}.content-actions{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:start}.project-browser{grid-template-columns:235px minmax(0,1fr)}.project-panel{padding:24px;min-height:376px}.flow{gap:4px;grid-template-columns:minmax(0,1fr) 18px minmax(0,1fr) 18px minmax(0,1fr)}.flow-node{padding:12px 8px}.flow-arrow .icon{width:18px;height:18px}.flow-arrow::after{top:7px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.site-header{min-height:105px;align-items:flex-start;justify-content:center;flex-direction:column;gap:5px;padding-block:16px 10px}.nav{width:100%;gap:5px 26px}.hero{grid-template-columns:minmax(0,1fr);padding-block:38px 28px;gap:0}.hero h1{font-size:46px}.hero h1 span{display:inline}.hero-art{display:none}.hero-copy{position:relative;padding-right:124px}.hero-copy::after{content:'';position:absolute;top:7px;right:0;width:100px;height:100px;background:url('kexian-avatar.jpg') center/cover;border:4px solid #243b53;border-radius:23px}.project-browser{grid-template-columns:1fr}.project-tabs{grid-template-columns:repeat(3,minmax(0,1fr));border-right:0;border-bottom:1px solid var(--line);padding:10px;gap:6px}.project-tab{min-height:52px;font-size:13px;padding:10px;gap:8px;line-height:1.6}.project-tab .tab-arrow{display:none}.project-panel{min-height:340px;padding:24px}.service-panel{gap:10px;align-items:flex-start;flex-direction:column}.product-card{padding:20px}}
@media(max-width:580px){.shell{width:calc(100% - 40px)}.brand{font-size:15px}.brand-symbol{width:28px;height:28px}.nav{gap:3px 20px;font-size:12px}.nav-contact .icon{display:none}.hero{padding-block:30px 20px}.hero-copy{padding-right:0}.hero-copy::after{top:3px;width:68px;height:68px;border-width:3px;border-radius:18px}.hero h1{max-width:calc(100% - 82px);font-size:36px;line-height:1.3}.hero h1 span{display:block}.role{font-size:15px;margin-top:18px}.intro-copy{font-size:14px;line-height:1.9;margin-top:14px}.hero-actions{margin-top:20px;gap:12px 20px}.background-tags{font-size:11px;margin-top:16px;gap:6px 12px}.background-tags span+span::before{margin-right:12px}.section{margin-top:28px}.section-heading{margin-bottom:16px}.section-heading h2{font-size:24px}.section-note{font-size:13px}.project-tabs{grid-template-columns:repeat(2,minmax(0,1fr));padding:8px;gap:4px}.project-tab{font-size:12px;gap:8px;min-height:48px;padding:8px}.project-tab .number{font-size:10px}.project-panel{padding:20px;min-height:355px}.project-panel h3{font-size:21px;margin-top:10px}.project-copy{font-size:13px;margin-top:9px}.project-meta{font-size:10px}.flow{margin-top:18px;grid-template-columns:minmax(0,1fr) 14px minmax(0,1fr) 14px minmax(0,1fr);gap:3px}.flow-node{min-height:94px;padding:10px 5px;gap:6px;border-radius:8px}.flow-node strong{font-size:11px;line-height:1.7}.flow-node small{font-size:9px;letter-spacing:0}.flow-arrow .icon{width:14px;height:14px}.flow-arrow::after{top:5px;width:3px;height:3px}.project-tags{gap:5px;margin-top:16px}.project-tags span,.project-tags a{font-size:9px;padding:3px 7px}.practice-note{font-size:11px;line-height:1.8}.service-tabs{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.service-tab{min-height:52px;font-size:13px;gap:8px}.service-tab .icon{width:18px;height:18px}.service-panel{padding:18px 20px;min-height:112px}.service-panel h3{font-size:15px}.service-panel p{font-size:13px}.delivery-track{font-size:11px;gap:6px 10px}.delivery-track .icon{width:12px;height:12px}.content-section{margin-top:28px;padding-block:18px;gap:8px}.content-note{font-size:12px}.content-links{gap:2px 17px}.social-link{font-size:12px}.social-link .icon{width:14px;height:14px}.content-actions{gap:4px 24px}.product-grid{gap:10px}.product-card{padding:17px;min-height:168px}.product-card h3{font-size:14px;line-height:1.7}.product-card p{font-size:11px}.product-icon{width:32px;height:32px;margin-bottom:10px}.product-arrow{top:21px;right:14px;width:14px;height:14px}.business-tools{gap:10px;margin-top:10px}.business-tools .product-card{flex-direction:column;align-items:flex-start;gap:8px}.business-tools .product-arrow{position:absolute;top:21px;right:14px}.business-tools .product-card p{margin-top:4px}.cooperation{margin-top:28px;padding:22px;align-items:flex-start;flex-direction:column;gap:16px}.cooperation h2{font-size:20px}.cooperation p{font-size:12px}.site-footer{margin-top:28px;display:block;min-height:96px;font-size:11px}.site-footer a{margin-top:2px}}
@media(max-width:350px){.shell{width:calc(100% - 32px)}.nav{gap:3px 16px}.hero h1{font-size:31px;max-width:calc(100% - 64px)}.hero-copy::after{width:56px;height:56px;border-radius:14px}.role{font-size:13px}.project-tab{font-size:11px;gap:6px;padding:7px}.project-panel{padding:17px}.flow-node strong{font-size:10px}.product-card{padding:15px}.product-card h3{font-size:13px}.product-arrow{right:12px}.background-tags{gap:6px 8px}.background-tags span+span::before{margin-right:8px}.delivery-track{gap:6px 8px;font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.pointer-light{display:none}.portrait-frame{transform:none}}