:root{--navy:#102d3b;--teal:#00a899;--mint:#dff5ef;--ink:#172a34;--muted:#72828b;--line:#dfe7ea;--bg:#f3f6f8;--white:#fff;--shadow:0 14px 34px rgba(18,45,58,.09)}*{box-sizing:border-box}body{margin:0;font-family:"Microsoft YaHei UI","Segoe UI",sans-serif;background:var(--bg);color:var(--ink);display:flex;min-height:100vh}.sidebar{width:260px;background:var(--navy);color:#fff;position:fixed;inset:0 auto 0 0;padding:32px 20px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center;padding:0 8px 34px}.brand-mark{width:44px;height:44px;border-radius:13px;background:var(--teal);display:grid;place-items:center;font-weight:800}.brand strong,.brand span{display:block}.brand span{font-size:12px;color:#a9bdc6;margin-top:4px}.sidebar nav{display:grid;gap:8px}.nav-item{border:0;background:transparent;color:#b8c8ce;padding:14px 16px;border-radius:10px;text-align:left;font-size:15px;cursor:pointer}.nav-item.active,.nav-item:hover{background:#1b4150;color:#fff}.nav-item em{float:right;background:var(--teal);color:#fff;font-style:normal;padding:1px 7px;border-radius:10px;font-size:12px}.source-state{margin-top:auto;border-top:1px solid #31515d;padding:20px 8px;display:flex;gap:10px;align-items:center}.source-state>span{width:9px;height:9px;background:#46dcaa;border-radius:50%;box-shadow:0 0 0 5px rgba(70,220,170,.12)}.source-state strong,.source-state small{display:block}.source-state strong{font-size:12px}.source-state small{color:#8faab5;font-size:10px;margin-top:4px}.version{color:#6f909d;font-size:11px;padding:0 8px}main{margin-left:260px;padding:36px 48px 60px;width:calc(100% - 260px)}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.eyebrow{color:var(--teal);font-size:11px;letter-spacing:2px;font-weight:800;margin:0 0 6px}h1,h2,h3,p{margin-top:0}h1{font-size:30px;margin-bottom:0}.market-switch{background:#e5ecef;border-radius:9px;padding:4px}.market-switch button{border:0;background:transparent;padding:8px 17px;border-radius:7px;color:var(--muted);cursor:pointer}.market-switch button.active{background:#fff;color:var(--navy);box-shadow:0 3px 10px rgba(0,0,0,.08);font-weight:700}.view{display:none}.view.active{display:block}.scenario-grid{display:grid;grid-template-columns:repeat(3,minmax(220px,1fr));gap:18px}.scenario-card{border:1px solid var(--line);background:#fff;border-radius:15px;padding:24px;min-height:170px;cursor:pointer;transition:.2s;position:relative}.scenario-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.scenario-card.disabled{opacity:.62;cursor:default}.scenario-card.disabled:hover{transform:none;box-shadow:none}.scenario-icon{width:45px;height:45px;border-radius:12px;background:var(--mint);color:var(--teal);display:grid;place-items:center;font-weight:800;margin-bottom:20px}.scenario-card h3{margin-bottom:8px}.scenario-card p{font-size:13px;color:var(--muted);line-height:1.6}.badge{position:absolute;right:18px;top:18px;background:#edf3f5;color:#80919a;font-size:10px;padding:4px 8px;border-radius:9px}.scenario-card:not(.disabled) .badge{background:var(--mint);color:#087a70}.hidden{display:none}.back{border:0;background:transparent;color:var(--teal);cursor:pointer;padding:0 0 18px}.hero{background:linear-gradient(125deg,#123747,#176070);border-radius:18px;color:#fff;padding:34px 38px;display:grid;grid-template-columns:1.5fr 1fr;gap:32px}.hero p{color:#c3dce3;line-height:1.8}.metric-row{display:flex;gap:12px}.metric{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.12);padding:14px;border-radius:12px;flex:1}.metric strong,.metric span{display:block}.metric strong{font-size:20px;color:#5ee4ce}.metric span{font-size:11px;color:#b9d1d8;margin-top:4px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.panel{background:#fff;border:1px solid var(--line);border-radius:15px;padding:24px}.panel h3{font-size:16px}.pain-list{padding:0;margin:0;list-style:none;display:grid;gap:12px}.pain-list li{padding-left:20px;position:relative;color:#4f616a;font-size:13px}.pain-list li:before{content:"";width:7px;height:7px;border:2px solid var(--teal);border-radius:50%;position:absolute;left:0;top:4px}.timeline{display:grid;gap:10px}.mode{display:grid;grid-template-columns:55px 90px 1fr;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid #edf1f2;font-size:12px}.mode:last-child{border:0}.mode time{color:var(--teal);font-weight:700}.mode span{color:var(--muted)}.recommended{margin-top:18px}.recommended-head,.selection-head{display:flex;align-items:center;justify-content:space-between}.recommended-head p{color:var(--muted);font-size:12px}.product-grid{display:grid;grid-template-columns:repeat(4,minmax(190px,1fr));gap:16px}.product-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}.product-image{height:180px;background:#f7f9fa;display:grid;place-items:center;padding:18px}.product-image img{width:100%;height:100%;object-fit:contain}.product-body{padding:17px;display:flex;flex-direction:column;flex:1}.product-role{font-size:10px;color:var(--teal);font-weight:800;letter-spacing:1px}.product-body h3{font-size:14px;margin:7px 0 4px}.model{font-family:Consolas,monospace;color:#60717a;font-size:11px}.features{padding-left:17px;color:#65767e;font-size:11px;line-height:1.65;min-height:55px}.product-actions{display:flex;gap:8px;margin-top:auto}.product-actions button,.primary{border:0;border-radius:8px;padding:9px 11px;cursor:pointer;font-size:11px}.manual{background:#edf3f5;color:#46606c}.add,.primary{background:var(--teal);color:#fff}.add.selected{background:var(--navy)}.toolbar{display:flex;justify-content:space-between;margin-bottom:22px;gap:18px}.toolbar input{width:340px;padding:12px 15px;border:1px solid var(--line);border-radius:10px;outline:none}.filters{display:flex;gap:8px}.filters button{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 12px;cursor:pointer;color:var(--muted)}.filters button.active{background:var(--navy);color:#fff}.selection-head{margin-bottom:22px}.selection-head h2{margin:0}.primary{padding:11px 18px;font-size:13px}.empty{background:#fff;border:1px dashed #cbd7dc;border-radius:15px;padding:55px;text-align:center;color:var(--muted)}.selection-table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 0 0 1px var(--line)}.selection-table th,.selection-table td{text-align:left;padding:15px;border-bottom:1px solid #edf1f2;font-size:12px}.selection-table th{background:#f8fafb;color:#6f818a}.remove{border:0;background:#fff2f0;color:#c24f40;padding:6px 9px;border-radius:7px;cursor:pointer}.toast{position:fixed;right:28px;bottom:28px;background:var(--navy);color:#fff;padding:13px 18px;border-radius:10px;box-shadow:var(--shadow);opacity:0;transform:translateY(15px);transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:none}@media(max-width:1200px){.product-grid{grid-template-columns:repeat(2,1fr)}.scenario-grid{grid-template-columns:repeat(2,1fr)}}
/* My Selection controls */
.selection-actions{display:flex;gap:10px}.secondary{border:1px solid var(--line);background:#fff;border-radius:8px;padding:10px 16px;cursor:pointer;font-size:13px}.secondary.danger{color:#b74b3e;border-color:#f0cbc6}.selection-code{font-family:Consolas,monospace;white-space:nowrap}.selection-code.unmatched{color:#9aa8ae;font-family:inherit}.selection-quantity-input{width:72px;padding:7px 8px;border:1px solid var(--line);border-radius:7px;font:inherit}.selection-quantity-input:focus{outline:2px solid rgba(0,168,153,.18);border-color:var(--teal)}
/* System introduction */
.system-intro-lead{max-width:820px;color:var(--muted);font-size:14px;line-height:1.8;margin-bottom:24px}.system-overview-grid{display:grid;grid-template-columns:repeat(3,minmax(240px,1fr));gap:18px}.system-overview-card{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden;text-align:left;padding:0;cursor:pointer;color:var(--ink);transition:.2s}.system-overview-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.system-overview-media{height:156px;background:#f4f7f8;overflow:hidden;position:relative}.system-overview-media img{width:100%;height:100%;object-fit:cover}.system-overview-media:after{content:"";position:absolute;inset:auto 0 0;height:45%;background:linear-gradient(transparent,rgba(16,45,59,.28))}.system-overview-copy{padding:18px 19px 20px}.system-overview-copy h3{margin:0 0 8px;font-size:18px}.system-overview-copy p{margin:0;color:var(--muted);font-size:12px;line-height:1.65}.system-overview-copy span{display:inline-block;margin-top:15px;color:var(--teal);font-size:12px;font-weight:700}.system-detail-back{margin-bottom:18px}.system-detail-hero{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr;min-height:320px}.system-detail-copy{padding:38px}.system-detail-copy h2{font-size:30px;margin-bottom:10px}.system-detail-copy h3{font-size:16px;color:var(--teal);margin-bottom:18px}.system-detail-copy p{font-size:14px;line-height:1.85;color:#50636c}.system-detail-image{background:#f5f7f8;min-height:300px}.system-detail-image img{width:100%;height:100%;object-fit:contain}.system-explain-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;margin-top:18px}.system-section{background:#fff;border:1px solid var(--line);border-radius:15px;padding:24px}.system-section h3{font-size:16px;margin-bottom:17px}.system-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:center}.system-flow-step{position:relative;background:#eef8f6;border-radius:11px;padding:17px 10px;text-align:center;font-size:12px;font-weight:700;color:#24564f;min-height:66px;display:grid;place-items:center}.system-flow-step:not(:last-child):after{content:"→";position:absolute;right:-16px;color:var(--teal);font-size:18px}.system-bullet-list{display:grid;gap:10px;padding:0;margin:0;list-style:none}.system-bullet-list li{position:relative;padding-left:17px;color:#53666f;font-size:13px;line-height:1.6}.system-bullet-list li:before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--teal)}.system-note{margin-top:18px;border-left:4px solid var(--teal);background:#eff8f6;border-radius:0 12px 12px 0;padding:17px 19px;color:#466069;font-size:13px;line-height:1.7}@media(max-width:1200px){.system-overview-grid{grid-template-columns:repeat(2,1fr)}.system-detail-hero{grid-template-columns:1fr}.system-explain-grid{grid-template-columns:1fr}}
/* System knowledge deck */
.system-deck-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:20px}.system-deck-head h2{font-size:30px;margin:0 0 7px}.system-deck-head>div>p:last-child{color:var(--muted);font-size:13px;margin:0}.system-deck-progress{display:flex;align-items:baseline;gap:5px;color:#9aa7ad}.system-deck-progress strong{font-size:30px;color:var(--teal)}.system-deck{display:grid;grid-template-columns:230px minmax(0,1fr);gap:18px;align-items:start}.system-page-nav{background:#fff;border:1px solid var(--line);border-radius:15px;padding:9px;display:grid;gap:4px;position:sticky;top:24px}.system-page-tab{border:0;background:transparent;border-radius:10px;padding:12px;display:grid;grid-template-columns:30px 1fr;gap:8px;text-align:left;align-items:start;cursor:pointer;color:#647780}.system-page-tab span{font:700 11px Consolas;color:#9ba9af;padding-top:2px}.system-page-tab strong{font-size:12px;line-height:1.45}.system-page-tab.active{background:#eaf7f4;color:#173c3a}.system-page-tab.active span{color:var(--teal)}.system-slide{min-height:610px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--system-accent);border-radius:17px;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);overflow:hidden;box-shadow:0 12px 30px rgba(18,45,58,.06)}.system-slide-main{padding:42px 42px 34px}.system-slide-main h2{font-size:30px;line-height:1.25;margin-bottom:18px}.system-slide-lead{font-size:15px;line-height:1.9;color:#536770;margin-bottom:25px}.system-slide-points{list-style:none;padding:0;margin:0;display:grid;gap:13px}.system-slide-points li{position:relative;padding-left:22px;font-size:13px;line-height:1.65;color:#3f545e}.system-slide-points li:before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;border-radius:50%;background:var(--system-accent);box-shadow:0 0 0 5px color-mix(in srgb,var(--system-accent) 13%,transparent)}.system-slide-callout{margin-top:26px;padding:16px 18px;border-left:4px solid var(--system-accent);background:#f3f7f7;border-radius:0 10px 10px 0;color:#3f5962;font-size:13px;line-height:1.65}.system-slide-side{background:#f4f7f8;padding:34px 28px;display:flex;flex-direction:column}.system-slide-visual{height:185px;margin:-34px -28px 27px;background:#fff;overflow:hidden}.system-slide-visual img{width:100%;height:100%;object-fit:contain}.system-slide-side h3{font-size:15px;margin-bottom:17px}.system-side-items{display:grid;gap:9px}.system-side-items>div{background:#fff;border:1px solid #e3eaed;border-radius:10px;padding:12px;display:grid;grid-template-columns:28px 1fr;gap:7px;align-items:start}.system-side-items span{font:700 10px Consolas;color:var(--system-accent)}.system-side-items p{font-size:12px;line-height:1.5;color:#53666f;margin:0}.system-source-link{margin-top:auto;padding-top:22px;color:var(--teal);font-size:12px;font-weight:700;text-decoration:none}.system-slide-controls{grid-column:2;display:flex;align-items:center;justify-content:space-between}.system-slide-controls button{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 14px;cursor:pointer;color:#51656e}.system-slide-controls button:disabled{opacity:.38;cursor:default}.system-slide-controls>div{display:flex;gap:6px}.system-slide-controls i{width:7px;height:7px;border-radius:50%;background:#ced8dc}.system-slide-controls i.active{background:var(--teal);width:20px;border-radius:5px}@media(max-width:1200px){.system-deck{grid-template-columns:1fr}.system-page-nav{position:static;display:flex;overflow-x:auto}.system-page-tab{min-width:170px}.system-slide-controls{grid-column:1}.system-slide{grid-template-columns:1fr}.system-slide-side{min-height:300px}}

/* System introduction scene covers */
.system-overview-media,.system-slide-visual{isolation:isolate}.system-overview-media img,.system-slide-visual img{object-fit:cover;transition:transform .45s ease}.system-overview-card:hover .system-overview-media img{transform:scale(1.035)}.system-overview-media:after,.system-slide-visual:after{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(110deg,rgba(7,19,27,.64) 0%,rgba(7,19,27,.2) 48%,rgba(7,19,27,.04) 78%);pointer-events:none}.system-cover-mark{position:absolute;z-index:2;left:16px;top:15px;max-width:calc(100% - 32px);display:grid;gap:4px;padding:10px 13px 9px;border:1px solid rgba(255,255,255,.48);border-left:3px solid var(--system-accent);border-radius:9px;background:rgba(8,23,31,.5);box-shadow:0 8px 22px rgba(0,0,0,.12);color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.32);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px)}.system-cover-mark strong{font-size:18px;line-height:1.08;letter-spacing:.01em}.system-cover-mark span{font-size:8px;line-height:1.2;letter-spacing:.14em;font-weight:800;color:rgba(255,255,255,.82)}.system-slide-visual{position:relative}.system-slide-visual .system-cover-mark{left:20px;top:20px;padding:12px 15px}.system-slide-visual .system-cover-mark strong{font-size:21px}
.system-slide-points li strong{color:#173e48;font-size:14px}

/* Completed project references */
.project-case-section{margin-top:26px;padding-top:26px;border-top:1px solid var(--line)}.project-case-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:16px}.project-case-heading h2{margin:0 0 7px;font-size:24px}.project-case-heading>div>p:last-child{margin:0;color:var(--muted);font-size:12px}.project-case-heading-actions{display:flex;align-items:center;gap:10px}.project-case-status{border:1px solid #b9dcd5;background:#eaf7f4;color:#087a70;border-radius:999px;padding:7px 12px;font-size:10px;font-weight:800;letter-spacing:1px;white-space:nowrap}.project-case-carousel-controls{display:flex;align-items:center;gap:6px}.project-case-carousel-controls button{width:34px;height:34px;border:1px solid #d8e3e5;border-radius:50%;background:#fff;color:#173e48;font-size:16px;cursor:pointer}.project-case-carousel-controls button:hover:not(:disabled){border-color:var(--teal);color:var(--teal)}.project-case-carousel-controls button:disabled{opacity:.35;cursor:default}.project-case-carousel-controls strong{min-width:42px;color:#657980;font-size:11px;text-align:center}.project-case-track{display:grid;grid-auto-flow:column;grid-auto-columns:100%;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;scrollbar-width:none;border-radius:18px}.project-case-track::-webkit-scrollbar{display:none}.project-case-card{scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;display:grid;grid-template-columns:minmax(360px,1.05fr) minmax(420px,.95fr);box-shadow:0 12px 30px rgba(18,45,58,.06)}.project-case-gallery{display:grid;grid-template-rows:310px 130px;gap:3px;background:#e8eef0}.project-case-gallery img{display:block;width:100%;height:100%;object-fit:cover}.project-case-thumbs{display:grid;grid-template-columns:1fr 1fr;gap:3px}.project-case-gallery.image-count-2 .project-case-thumbs{grid-template-columns:1fr}.project-case-gallery.image-count-1{grid-template-rows:443px}.project-case-gallery.image-count-1 .project-case-thumbs{display:none}.project-case-copy{padding:30px 32px}.project-case-meta{display:flex;gap:9px;margin-bottom:14px}.project-case-meta span{background:#eef5f5;color:#587079;border-radius:6px;padding:5px 8px;font-size:10px}.project-case-copy h3{font-size:22px;margin-bottom:12px}.project-case-copy>p{font-size:13px;line-height:1.8;color:#53666f}.project-case-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:18px 0}.project-case-metrics>div{border-left:3px solid var(--teal);background:#f4f8f8;padding:11px 13px}.project-case-metrics strong,.project-case-metrics span{display:block}.project-case-metrics strong{font-size:17px;color:#173e48}.project-case-metrics span{font-size:10px;color:var(--muted);margin-top:4px}.project-case-copy ul{padding-left:18px;color:#53666f;font-size:12px;line-height:1.7}.project-case-products{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:17px}.project-case-products strong{font-size:11px;margin-right:2px}.project-case-products span{border:1px solid #d9e5e6;border-radius:6px;padding:5px 8px;color:#4f646d;font-size:10px}.project-case-copy small{display:block;margin-top:17px;color:#9aa7ad;font-size:9px}@media(max-width:1100px){.project-case-heading{align-items:flex-start}.project-case-heading-actions{flex-direction:column;align-items:flex-end}.project-case-card{grid-template-columns:1fr}.project-case-gallery{grid-template-rows:280px 120px}.project-case-gallery.image-count-1{grid-template-rows:403px}}