.portfolio *{box-sizing:border-box}
.portfolio a{color:inherit;text-decoration:none}
.portfolio button{font:inherit;color:inherit;cursor:pointer}
.portfolio a,.portfolio button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.portfolio a:focus-visible,.portfolio button:focus-visible,.portfolio summary:focus-visible{outline:3px solid #6387ff;outline-offset:5px}
.portfolio p{line-height:1.85}
.portfolio h1,.portfolio h2,.portfolio h3,.portfolio p{margin:0}
.portfolio ::selection{background:#ccd8ff}
.portfolio .skip{position:fixed;top:-100px;background:white;padding:14px;z-index:100}
.portfolio .skip:focus{top:10px}
.portfolio .identity{display:flex;flex-direction:column;gap:22px}
.portfolio .monogram{font-size:44px;font-weight:850;letter-spacing:-5px;line-height:1;color:var(--blue)}
.portfolio .monogram span{font-size:12px;vertical-align:top;margin-left:7px;letter-spacing:0}
.portfolio .identity strong{font-size:24px;letter-spacing:1px}
.portfolio .identity small{display:block;font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.4px;margin-top:7px}
.portfolio .menu-toggle{display:none}
.portfolio .section{max-width:1390px;margin:auto;padding:72px 64px;border-bottom:1px solid var(--line)}
.portfolio .hero{padding-top:30px;padding-bottom:0}
.portfolio .topline{display:flex;justify-content:space-between;font-size:10px;letter-spacing:1.5px;color:var(--muted);padding-bottom:30px;border-bottom:1px solid var(--line)}
.portfolio .edition{font-family:Consolas,monospace}
.portfolio .hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:35px;align-items:center;padding:64px 0 60px}
.portfolio .eyebrow{font-size:10px;font-weight:650;letter-spacing:1.6px;color:var(--blue)}
.portfolio h1{font-size:clamp(30px,3.3vw,52px);font-weight:650;letter-spacing:-2px;line-height:1.35;margin-top:22px;white-space:nowrap}
.portfolio h1 em{font-style:normal;color:var(--blue)}
.portfolio .lead{font-size:13px;color:var(--muted);max-width:405px;margin-top:24px;line-height:1.95}
.portfolio .actions{display:flex;gap:11px;margin-top:30px}
.portfolio .button{display:inline-flex;align-items:center;justify-content:center;gap:20px;font-size:12px;font-weight:600;min-height:44px;padding:12px 19px;border:1px solid transparent;border-radius:4px;transition:transform .2s,background .2s}
.portfolio .button:hover{transform:translateY(-2px)}
.portfolio .primary{background:var(--blue);color:white}
.portfolio .primary:hover{background:#193abb}
.portfolio .secondary{background:white;border-color:var(--line)}
.portfolio .hero-stack{display:flex;gap:18px;font:10px Consolas,monospace;color:var(--muted);margin-top:28px}
.portfolio .engineering-scene{height:350px;position:relative;background:linear-gradient(150deg,#edf2ff,#f5f8ff 60%,#e4ebfb);border:1px solid #d7e0f2;border-radius:10px;overflow:hidden;perspective:900px}
.portfolio .scene-top{position:absolute;top:20px;left:21px;right:21px;display:flex;justify-content:space-between;font:9px Consolas,monospace;letter-spacing:1px;color:#647694}
.portfolio .scene-grid{position:absolute;inset:30% -20% -60%;background-image:linear-gradient(#c6d2ed55 1px,transparent 1px),linear-gradient(90deg,#c6d2ed55 1px,transparent 1px);background-size:24px 24px;transform:rotateX(50deg) rotateZ(-28deg)}
.portfolio .system-layer{position:absolute;left:15%;right:12%;height:75px;border:1px solid #b9c9ef;background:linear-gradient(120deg,#ffffffed,#e8effff5);border-radius:7px;box-shadow:6px 13px 18px #18326b14;display:flex;align-items:center;gap:13px;padding:15px 19px;transform:rotateY(-16deg) rotateX(14deg) rotateZ(-7deg);animation:layerFloat 7s ease-in-out infinite}
.portfolio .layer-client{top:62px;z-index:3}
.portfolio .layer-service{top:142px;z-index:2;animation-delay:-2.3s;background:linear-gradient(120deg,#254fdc,#1c3eae);border-color:#5278ed;color:white;box-shadow:8px 15px 25px #254fdc30}
.portfolio .layer-data{top:222px;z-index:1;animation-delay:-4.6s}
.portfolio .layer-icon{font:25px Consolas,monospace;min-width:32px;color:#6785d4}
.portfolio .layer-service .layer-icon{color:#b6c9ff}
.portfolio .system-layer small{font:8px Consolas,monospace;letter-spacing:1.3px;opacity:.65;display:block;margin-bottom:7px}
.portfolio .system-layer strong{font:600 13px "Segoe UI",sans-serif}
.portfolio .layer-index{font:9px Consolas,monospace;opacity:.45;margin-left:auto}
.portfolio .scene-foot{position:absolute;left:21px;right:21px;bottom:15px;display:flex;align-items:center;justify-content:space-between;color:#6b7d9d;font-size:9px;letter-spacing:1px}
.portfolio .scene-foot button{border:1px solid #bac8e3;background:#ffffff99;border-radius:4px;font-size:11px;min-width:28px;min-height:25px;color:#435a89}
.portfolio .engineering-scene.paused .system-layer{animation-play-state:paused}
@keyframes layerFloat{0%,100%{translate:0 0}50%{translate:0 -8px}}
.portfolio .capability-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);padding:25px 0 27px}
.portfolio .capability-strip>div{padding-left:25px;border-left:1px solid var(--line)}
.portfolio .capability-strip>div:first-child{padding:0;border:0}
.portfolio .capability-strip span{display:block;font-size:9px;color:var(--muted);letter-spacing:1px}
.portfolio .capability-strip strong{font-size:12px;display:block;margin-top:9px;font-weight:550}
.portfolio .section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:31px}
.portfolio .section-heading h2{font-size:27px;letter-spacing:-.7px;line-height:1.3;margin-top:12px;font-weight:650}
.portfolio .section-heading h2 span{font-size:12px;color:var(--muted);font-weight:400;letter-spacing:0;margin-left:18px}
.portfolio .section-note{font-size:10px;color:var(--muted)}
.portfolio .project-card{display:grid;grid-template-columns:1fr 1.04fr;background:white;border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:22px}
.portfolio .project-copy{padding:32px}
.portfolio .project-kicker{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:var(--muted);letter-spacing:1px}
.portfolio .status{background:#f1f4fc;border:1px solid #e0e6f3;padding:3px 7px;border-radius:3px;letter-spacing:0;color:#5b6e9c}
.portfolio .project-copy h3,.portfolio .compact-project h3{font-size:23px;font-weight:650;margin:18px 0 6px;letter-spacing:-.5px}
.portfolio .project-subtitle{color:var(--muted);font-size:11px}
.portfolio .project-copy>p:not(.project-subtitle),.portfolio .compact-project>p:not(.project-subtitle){font-size:12px;color:#536176;margin-top:19px}
.portfolio .project-facts{margin:19px 0 0;font-size:10px}
.portfolio .project-facts div{display:grid;grid-template-columns:60px 1fr;margin-top:10px;line-height:1.7}
.portfolio .project-facts dt{color:#8691a2}
.portfolio .project-facts dd{margin:0;color:#43526a}
.portfolio .tags{display:flex;gap:5px;flex-wrap:wrap;margin:22px 0}
.portfolio .tags span{font:9px Consolas,"Microsoft YaHei",monospace;background:#f4f6fa;border:1px solid #e8ecf2;color:#647186;border-radius:3px;padding:5px 7px}
.portfolio .text-link{color:var(--blue);font-size:11px;font-weight:600;display:inline-flex;gap:20px;align-items:center}
.portfolio .text-link:hover,.portfolio .muted-link:hover{text-decoration:underline}
.portfolio .muted-link{font-size:10px;color:var(--muted)}
.portfolio .project-links{display:flex;gap:23px;align-items:center}
.portfolio .diagram-preview{min-width:0;display:flex;flex-direction:column;justify-content:space-between;background:#f9fbff;border-left:1px solid var(--line);transition:background .25s;padding:24px 19px}
.portfolio .diagram-preview:hover{background:#edf3ff}
.portfolio .preview-heading,.portfolio .preview-footer{display:flex;justify-content:space-between;font-size:8px;letter-spacing:1px;color:#6c7d99;padding:0 6px}
.portfolio .preview-heading span:first-child{color:#405575;font-size:10px;letter-spacing:0}
.portfolio .diagram-preview img{width:100%;height:auto;display:block;margin:10px 0}
.portfolio .preview-footer span:last-child{color:var(--blue)}
.portfolio .project-pair{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.portfolio .compact-project{background:white;border:1px solid var(--line);border-radius:8px;padding:30px}
.portfolio .compact-project h3{font-size:21px}
.portfolio .mini-flow{display:flex;justify-content:space-between;align-items:center;gap:5px;background:#f6f8fc;border:1px solid #e9edf5;border-radius:4px;padding:14px 10px;margin-top:22px;font-size:9px;color:#465b80}
.portfolio .mini-flow b{font-weight:400;color:#9cacc5}
.portfolio .product-demo{margin-top:22px;border:1px solid var(--line);border-radius:7px;background:#fff}
.portfolio .product-demo summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:20px 27px;gap:20px}
.portfolio .product-demo summary::-webkit-details-marker{display:none}
.portfolio .product-demo summary b{font-size:12px;font-weight:550}
.portfolio .product-demo summary small{font-size:10px;color:var(--muted);margin-left:20px}
.portfolio .demo-label{font-size:10px;color:var(--blue)}
.portfolio .film-shell{padding:0 24px 15px}
.portfolio .film-shell video{width:100%;display:block;aspect-ratio:16/9;border-radius:6px;background:#060a12}
.portfolio .film-controls{display:flex;justify-content:space-between;margin:12px 0;gap:10px}
.portfolio .film-controls button{background:none;border:0;font-size:10px;padding:7px;color:var(--muted)}
.portfolio .film-controls button[aria-current=true]{color:var(--blue)}
.portfolio .film-progress{height:2px;background:#e7ecf6}
.portfolio .film-progress span{display:block;width:100%;height:100%;background:var(--blue);transform-origin:left;transform:scaleX(0)}
.portfolio .film-note{font-size:9px;text-align:center;margin-top:8px;color:var(--muted)}
.portfolio .article-row{width:100%;border:0;border-top:1px solid var(--line);background:transparent;display:grid;grid-template-columns:35px 1fr auto 18px;gap:18px;text-align:left;align-items:center;padding:23px 0;transition:background .2s}
.portfolio .article-row:hover{background:#edf1f8}
.portfolio .article-row>span{font:10px Consolas,monospace;color:#909db0}
.portfolio .article-row small{font-size:9px;color:var(--blue)}
.portfolio .article-row h3{font-size:14px;font-weight:550;line-height:1.6;margin-top:7px}
.portfolio .article-row time{font:10px Consolas,monospace;color:var(--muted)}
.portfolio .article-row>b{font-weight:400;color:var(--blue)}
.portfolio .resume-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:65px}
.portfolio .resume-mark{background:#e9eefb;border:1px solid #d6e0f7;border-radius:6px;width:78px;height:78px;display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:29px;color:#5572b5}
.portfolio .resume-mark small{font:8px Consolas,monospace;margin-top:5px}
.portfolio .resume-intro h3{font-size:23px;margin-top:20px}
.portfolio .resume-intro>p{font-size:12px;color:var(--muted);margin-top:8px}
.portfolio .resume-intro .resume-statement{margin:20px 0 25px;max-width:350px}
.portfolio .skill-list>div{display:grid;grid-template-columns:25px 1fr;gap:7px 13px;padding:20px 0;border-bottom:1px solid var(--line)}
.portfolio .skill-list>div:first-child{padding-top:0}
.portfolio .skill-list>div>span{font:10px Consolas,monospace;color:#899ab6;padding-top:3px}
.portfolio .skill-list h3{font-size:13px;font-weight:600}
.portfolio .skill-list p{grid-column:2;font-size:11px;color:var(--muted);line-height:1.85}
.portfolio .contact{background:#edf1f8}
.portfolio .contact-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center}
.portfolio .contact-grid p{font-size:13px}
.portfolio .contact-sub{color:var(--muted);font-size:11px!important;max-width:400px;margin-top:8px}
.portfolio .wechat-button{text-align:left;background:#fff;border:1px solid #d8e0ef;border-radius:6px;padding:20px 23px}
.portfolio .wechat-button>span{font-size:9px;letter-spacing:1px;color:var(--muted)}
.portfolio .wechat-button strong{display:block;font:600 22px Consolas,monospace;margin-top:10px}
.portfolio .wechat-button b{float:right;font-weight:400;color:var(--blue)}
.portfolio .dialog-top{display:flex;justify-content:space-between;align-items:center;padding:15px 26px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2;font-size:11px;color:var(--muted)}
.portfolio .close-dialog{background:none;border:0;font-size:25px;width:34px;height:34px}
.portfolio .dialog-body{padding:32px}
.portfolio .dialog-body h2{font-size:25px;line-height:1.5}
.portfolio .dialog-body p,.portfolio .dialog-body li{font-size:13px;color:#546278;line-height:1.95;margin-top:17px}
.portfolio .dialog-body h3{font-size:17px;margin-top:28px}
.portfolio .dialog-body pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f2f5fa;padding:16px;font-size:12px}
.portfolio .dialog-body blockquote{border-left:3px solid var(--blue);padding-left:18px;margin-left:0;font-size:13px;line-height:1.9}
.portfolio .dialog-body a{color:var(--blue)}
.portfolio .dialog-body .primary{color:white}
.portfolio .notice{font-size:11px!important}
.portfolio .article-source{border-top:1px solid var(--line);padding-top:15px}
.portfolio .wechat-card{padding:25px;background:#f1f5ff;margin:25px 0}
.portfolio .wechat-card>span{font-size:10px;color:var(--muted)}
.portfolio .wechat-card strong{display:block;font:26px Consolas,monospace;margin-top:10px}
.portfolio #toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);padding:14px 22px;background:#172132;color:#fff;z-index:100;opacity:0;pointer-events:none;transition:.2s;font-size:12px;border-radius:5px;max-width:90vw}
.portfolio #toast.show{opacity:1;transform:translate(-50%,0)}
.portfolio .diagram-toolbar{height:46px;padding:10px 25px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:#f6f8fc}
.portfolio .diagram-toolbar h2{font-size:12px;font-weight:500}
.portfolio .diagram-toolbar a{font-size:10px;color:var(--blue)}
.portfolio .architecture-dialog iframe{display:block;width:100%;height:calc(100% - 46px);border:0;background:#f8fafc}
@media(min-width:1700px){.portfolio .hero-grid{gap:65px;padding-top:80px;padding-bottom:80px}
.portfolio .hero{padding-top:40px}
.portfolio .engineering-scene{height:385px}
.portfolio .layer-client{top:75px}
.portfolio .layer-service{top:160px}
.portfolio .layer-data{top:245px}}
@media(max-width:1200px){.portfolio .section{padding:55px 35px}
.portfolio .hero{padding-top:25px;padding-bottom:0}
.portfolio .hero-grid{gap:25px;padding:45px 0}
.portfolio .engineering-scene{height:320px}
.portfolio .system-layer{left:9%;right:9%;padding:12px}
.portfolio .layer-client{top:55px}
.portfolio .layer-service{top:128px}
.portfolio .layer-data{top:201px}
.portfolio h1{font-size:34px}
.portfolio .project-copy{padding:25px}
.portfolio .diagram-preview{padding:20px 10px}
.portfolio .resume-layout{gap:35px}
.portfolio .compact-project{padding:25px}
.portfolio .contact-grid{gap:25px}
.portfolio .hero-stack{gap:12px}}
@media(max-width:960px){.portfolio .hero-grid{grid-template-columns:1fr}
.portfolio h1{font-size:43px}
.portfolio .lead{max-width:100%}
.portfolio .engineering-scene{height:265px}
.portfolio .system-layer{left:28%;right:20%;height:60px}
.portfolio .layer-client{top:46px}
.portfolio .layer-service{top:109px}
.portfolio .layer-data{top:172px}
.portfolio .project-card{grid-template-columns:1fr}
.portfolio .diagram-preview{border-left:0;border-top:1px solid var(--line);padding:18px 25px}
.portfolio .diagram-preview img{max-height:300px;object-fit:contain}
.portfolio .project-copy{padding:28px}
.portfolio .project-pair{grid-template-columns:1fr}
.portfolio .section-note{display:none}
.portfolio .section-heading h2 span{display:block;margin:8px 0 0}
.portfolio .capability-strip>div{padding-left:12px}
.portfolio .capability-strip strong{font-size:10px}
.portfolio .resume-layout,.portfolio .contact-grid{grid-template-columns:1fr}
.portfolio .skill-list{margin-top:4px}
.portfolio .product-demo summary small{display:block;margin:7px 0 0}
.portfolio .article-row{grid-template-columns:20px 1fr 15px;gap:12px}
.portfolio .article-row time{display:none}}
@media(max-width:680px){.portfolio .identity{flex-direction:row;gap:13px;align-items:center}
.portfolio .monogram{font-size:28px;letter-spacing:-3px}
.portfolio .monogram>span{display:none}
.portfolio .identity strong{font-size:15px;letter-spacing:0}
.portfolio .identity small{font-size:8px;margin-top:2px}
.portfolio .menu-toggle{display:block;border:1px solid var(--line);background:#fff;width:35px;height:34px;font-size:16px;border-radius:3px}
.portfolio .section{padding:43px 23px}
.portfolio .hero{padding-top:23px;padding-bottom:0}
.portfolio .topline{font-size:8px;letter-spacing:.6px;padding-bottom:20px}
.portfolio .edition{display:none}
.portfolio .hero-grid{padding:35px 0 32px;gap:30px}
.portfolio h1{font-size:clamp(28px,8vw,39px);letter-spacing:-1px;margin-top:18px}
.portfolio .eyebrow{font-size:9px}
.portfolio .lead{font-size:12px;margin-top:17px;line-height:1.85}
.portfolio .actions{margin-top:23px}
.portfolio .button{font-size:11px;padding:11px 14px;gap:15px;min-height:42px}
.portfolio .hero-stack{font-size:9px;gap:16px;margin-top:22px}
.portfolio .engineering-scene{height:290px}
.portfolio .system-layer{left:16%;right:15%;height:66px}
.portfolio .layer-client{top:49px}
.portfolio .layer-service{top:120px}
.portfolio .layer-data{top:191px}
.portfolio .capability-strip{padding:22px 0;gap:10px}
.portfolio .capability-strip>div{padding-left:10px}
.portfolio .capability-strip span{font-size:8px;letter-spacing:0}
.portfolio .capability-strip strong{font-size:9px;line-height:1.65;margin-top:7px}
.portfolio .section-heading{margin-bottom:25px;gap:14px}
.portfolio .section-heading h2{font-size:24px}
.portfolio .section-heading h2 span{font-size:11px}
.portfolio .section-heading>.text-link{font-size:10px;white-space:nowrap}
.portfolio .project-copy{padding:23px}
.portfolio .project-copy h3{font-size:21px}
.portfolio .project-facts div{grid-template-columns:56px 1fr}
.portfolio .diagram-preview{padding:19px 12px}
.portfolio .diagram-preview img{margin:20px 0}
.portfolio .project-card{margin-bottom:18px}
.portfolio .project-pair{gap:18px}
.portfolio .compact-project{padding:23px}
.portfolio .product-demo summary{padding:18px}
.portfolio .product-demo summary small{font-size:9px;line-height:1.6}
.portfolio .demo-label{font-size:9px;white-space:nowrap}
.portfolio .film-shell{padding:0 10px 13px}
.portfolio .film-controls button{font-size:9px;padding:4px}
.portfolio .article-row h3{font-size:12px}
.portfolio .article-row{padding:20px 0}
.portfolio .resume-layout{gap:35px}
.portfolio .resume-mark{width:65px;height:65px;font-size:25px}
.portfolio .resume-intro h3{font-size:22px}
.portfolio .contact-grid p{font-size:12px}
.portfolio .wechat-button strong{font-size:23px}
.portfolio .dialog-body{padding:23px}
.portfolio .dialog-body h2{font-size:21px}
.portfolio .dialog-top{padding:11px 19px}
.portfolio .diagram-toolbar{padding:8px 14px}
.portfolio .diagram-toolbar h2{font-size:10px}
.portfolio .diagram-toolbar a{font-size:9px;white-space:nowrap}}
@media(prefers-reduced-motion:reduce){.portfolio *,.portfolio *::before,.portfolio *::after{animation:none!important;transition:none!important}}/* Shared shell and component theme for the merged blog. */
:root{--paper:#f5f6f8;--paper-deep:#edf1f8;--surface:#fff;--surface-solid:#fff;--ink:#172132;--muted:#687385;--line:#dfe4ec;--brand:#234ce5;--brand-strong:#234ce5;--gold:#315add;--gold-soft:#b6c8ff;--shadow:none;--radius:8px;--shell:1160px;--blue:#234ce5;--bg:#f5f6f8;--rail:224px}
html[data-theme='dark']{--paper:#111827;--paper-deep:#0d1422;--surface:#192338;--surface-solid:#192338;--ink:#e4eaf6;--muted:#a2afc6;--line:#2b3850;--brand:#90adff;--brand-strong:#315bdf;--gold:#90adff;--gold-soft:#b6c8ff;--shadow:none;--blue:#90adff;--bg:#111827}
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/* Portfolio routes use the new composition within the existing application. */
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.portfolio *{animation:none!important;transition:none!important}}
.portfolio .engineering-scene{color:#172132}.portfolio .layer-client,.portfolio .layer-data{color:#172132}.portfolio .layer-service{color:white}
.service-card{padding:28px;gap:18px}.service-card::before{display:none}.service-card h3{font-size:25px!important;line-height:1.4}.service-card p{font-size:13px}.service-card-head>span{width:48px;height:48px;border-radius:6px;font:22px/1 inherit}.service-grid.detailed .service-card{padding:28px}.service-contact-copy h2,.service-process h2,.boundary-grid h2{font-size:27px;font-family:inherit}.service-contact-copy p,.boundary-grid p{font-size:13px}
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