.wind-tunnel-container{--cold:#3fa9f5;--warm:#ff5c4d;--amber:#f5a623;--green:#33d6a6;width:100%;min-height:100vh;position:relative}.wind-tunnel-container .bg-fx{z-index:-1;pointer-events:none;background:radial-gradient(900px 500px at 18% -6%,#3fa9f524,#0000 60%),radial-gradient(800px 500px at 88% 8%,#ff5c4d14,#0000 60%),radial-gradient(1200px 800px at 50% 110%,#3fa9f50f,#0000 60%);position:fixed;inset:0}.wind-tunnel-container .bg-fx:after{content:"";background-image:linear-gradient(#ffffff03 1px,#0000 1px),linear-gradient(90deg,#ffffff03 1px,#0000 1px);background-size:56px 56px;position:absolute;inset:0;mask-image:radial-gradient(90% 60% at 50% 20%,#000,#0000 75%)}.wind-tunnel-container .shell{max-width:1600px;margin:0 auto;padding:2.5rem 1.5rem 5rem}.wind-tunnel-container .hero-header-section{text-align:center;padding-bottom:2rem}.wind-tunnel-container .ad-top-wrapper{justify-content:center;margin-top:1.5rem;display:flex}.wind-tunnel-container .status-pill{color:var(--text-2);border-radius:var(--r-pill);background:var(--card);border:1px solid var(--border);align-items:center;gap:7px;margin-bottom:18px;padding:6px 14px;font-size:12.5px;font-weight:600;display:inline-flex}.wind-tunnel-container .status-pill .dot{background:var(--success);width:7px;height:7px;box-shadow:0 0 8px var(--success);border-radius:50%;animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.wind-tunnel-container .hero-header-section h1{letter-spacing:-.04em;background:linear-gradient(135deg, #fff 0%, var(--text-2) 50%, #0a84ffb3 100%);-webkit-text-fill-color:transparent;background-clip:text;margin:0 0 16px;font-size:clamp(2.6rem,6vw,4rem);font-weight:900;line-height:1.05}.wind-tunnel-container .hero-header-section p,.wind-tunnel-container .hero-header-section .hero-sub,.wind-tunnel-container .hero-sub{color:var(--text-2);max-width:640px;margin:0 auto;font-size:1.1rem;font-weight:400;line-height:1.65}.wind-tunnel-container .top-controls-row{border-radius:var(--r-pill);background:var(--card);border:1px solid var(--border);backdrop-filter:blur(12px);justify-content:center;align-items:center;gap:16px;max-width:1100px;margin:22px auto 16px;padding:12px 24px;display:flex}.wind-tunnel-container .top-controls-row .tc-item{text-align:left;flex-direction:column;gap:4px;display:flex}.wind-tunnel-container .top-controls-row .tc-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);font-size:10.5px;font-weight:700}.wind-tunnel-container .top-controls-row .tc-select{border-radius:var(--r-pill);background:var(--bg-2);border:1px solid var(--border);height:32px;color:var(--text);cursor:pointer;transition:border-color .2s var(--ease);outline:none;padding:0 10px;font-size:13px;font-weight:600}.wind-tunnel-container .top-controls-row .tc-select:hover,.wind-tunnel-container .top-controls-row .tc-select:focus{border-color:var(--accent)}.wind-tunnel-container .top-controls-row .tc-divider{background:var(--border);flex-shrink:0;width:1px;height:28px;margin:0 4px}.wind-tunnel-container .top-controls-row .slider-item{flex:160px;min-width:130px}.wind-tunnel-container .top-controls-row .slider-item .ctrl-label{margin-bottom:2px;font-size:11.5px}.wind-tunnel-container .top-controls-row .obj-item{min-width:160px}.wind-tunnel-container .top-controls-row .flip-item{justify-content:center}@media (width<=860px){.wind-tunnel-container .top-controls-row{border-radius:var(--r-lg);flex-wrap:wrap;padding:16px}.wind-tunnel-container .top-controls-row .tc-divider{display:none}}.wind-tunnel-container .tool-layout-body{border-top:1px solid var(--border-strong);grid-template-columns:1fr 340px;align-items:start;gap:2.5rem;margin-top:2rem;padding-top:2.5rem;display:grid}.wind-tunnel-container .tool-main-content{border-right:1px solid var(--border);min-width:0;padding-right:2.5rem}.wind-tunnel-container .tool-sidebar-col{min-width:0}.wind-tunnel-container .sidebar-sticky-wrap{flex-direction:column;gap:1.2rem;display:flex;position:sticky;top:90px}.wind-tunnel-container .sidebar-block-title{text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);padding:0 2px;font-size:12px;font-weight:700}.wind-tunnel-container .sidebar-tools-index .quick-index-section{margin:0;padding:1.25rem}@media (width<=1100px){.wind-tunnel-container .tool-layout-body{grid-template-columns:1fr;gap:2rem}.wind-tunnel-container .tool-main-content{border-right:none;padding-right:0}.wind-tunnel-container .sidebar-sticky-wrap{position:static}}.wind-tunnel-container section{margin-bottom:2.5rem}.wind-tunnel-container .section-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:1.5rem;display:flex}.wind-tunnel-container .section-head h2{letter-spacing:-.02em;margin:0;font-size:24px;font-weight:700}.wind-tunnel-container .section-head p{color:var(--text-2);margin:4px 0 0;font-size:14px}.wind-tunnel-container .glass{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);-webkit-backdrop-filter:blur(30px)saturate(160%);box-shadow:var(--shadow-card)}.wind-tunnel-container .viewport-card{background:radial-gradient(at 30% 20%,#0d1526 0%,#090d17 70%);height:min(60vh,580px);min-height:420px;position:relative;overflow:hidden}.wind-tunnel-container #tunnelCanvas{width:100%;height:100%;display:block}.wind-tunnel-container .stage-toolbar{z-index:5;gap:8px;display:flex;position:absolute;top:16px;right:16px}.wind-tunnel-container .toolbar-group{border:1px solid var(--border);border-radius:var(--r-pill);backdrop-filter:blur(20px);background:#141518a6;align-items:center;gap:4px;padding:4px;display:flex}.wind-tunnel-container .tool-btn{border-radius:var(--r-pill);border:1px solid var(--border);background:var(--card);min-width:32px;height:32px;color:var(--text-2);cursor:pointer;transition:background .2s var(--ease), color .2s var(--ease);justify-content:center;align-items:center;padding:0 12px;font-size:12.5px;font-weight:600;display:flex}.wind-tunnel-container .tool-btn:hover{background:var(--card-hover);color:var(--text)}.wind-tunnel-container .tool-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.wind-tunnel-container .toggle-pill{border:1px solid var(--border);border-radius:var(--r-pill);backdrop-filter:blur(20px);background:#141518a6;gap:2px;padding:3px;display:flex}.wind-tunnel-container .toggle-pill button{color:var(--text-2);border-radius:var(--r-pill);cursor:pointer;background:0 0;border:none;padding:5px 12px;font-size:12px;font-weight:600}.wind-tunnel-container .toggle-pill button.active{background:var(--text);color:var(--bg)}.wind-tunnel-container .viewport-hud{pointer-events:none;z-index:5;flex-direction:column;gap:6px;display:flex;position:absolute;top:16px;left:16px}.wind-tunnel-container .hud-chip{font-family:var(--font-mono);color:var(--text-dim,#8ca0c2);border:1px solid var(--border);backdrop-filter:blur(8px);background:#0a0f1abf;border-radius:6px;padding:5px 10px;font-size:11.5px}.wind-tunnel-container .hud-chip b{color:var(--amber);font-weight:600}.wind-tunnel-container .legend{color:var(--text-3);border:1px solid var(--border);backdrop-filter:blur(8px);z-index:5;background:#0a0f1abf;border-radius:6px;align-items:center;gap:8px;padding:6px 12px;font-size:11px;display:flex;position:absolute;bottom:16px;left:16px}.wind-tunnel-container .legend-bar{background:linear-gradient(90deg, var(--cold), #12203a, var(--warm));border-radius:3px;width:90px;height:8px}.wind-tunnel-container .stall-flag{border:1px solid var(--warm);color:#ffe2de;font-family:var(--font-mono);letter-spacing:.05em;z-index:5;background:#7a2a22e6;border-radius:6px;padding:6px 12px;font-size:11px;font-weight:700;display:none;position:absolute;top:16px;right:320px}.wind-tunnel-container .stall-flag.show{display:block}.wind-tunnel-container .workspace{grid-template-columns:340px 1fr;align-items:start;gap:20px;display:grid}@media (width<=1080px){.wind-tunnel-container .workspace{grid-template-columns:1fr}}.wind-tunnel-container .control-panel{padding:20px}.wind-tunnel-container .control-panel .panel-title{text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);margin:0 0 14px;font-size:13px;font-weight:700}.wind-tunnel-container .sec{margin-bottom:18px}.wind-tunnel-container .sec-title{letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);align-items:center;gap:6px;margin-bottom:10px;font-size:11px;font-weight:700;display:flex}.wind-tunnel-container .sec-title:after{content:"";background:var(--border);flex:1;height:1px}.wind-tunnel-container .obj-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.wind-tunnel-container .obj-btn{background:var(--card);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-2);text-align:center;cursor:pointer;transition:all .2s var(--ease);flex-direction:column;align-items:center;gap:6px;padding:10px 8px;font-size:11.5px;font-weight:500;display:flex}.wind-tunnel-container .obj-btn svg{width:26px;height:20px}.wind-tunnel-container .obj-btn:hover{background:var(--card-hover);color:var(--text)}.wind-tunnel-container .obj-btn.active{border-color:var(--cold);color:#fff;background:#3fa9f533}.wind-tunnel-container .ctrl{margin-bottom:14px}.wind-tunnel-container .ctrl-label{color:var(--text-2);justify-content:space-between;margin-bottom:6px;font-size:12.5px;display:flex}.wind-tunnel-container .ctrl-label .val{font-family:var(--font-mono);color:var(--amber);font-weight:600}.wind-tunnel-container .segmented{background:var(--card);border:1px solid var(--border);border-radius:var(--r-pill);gap:2px;padding:3px;display:flex}.wind-tunnel-container .segmented button{color:var(--text-2);border-radius:var(--r-pill);cursor:pointer;background:0 0;border:none;flex:1;padding:7px 0;font-size:12px;font-weight:600}.wind-tunnel-container .segmented button.active{background:var(--text);color:var(--bg)}.wind-tunnel-container .preset-row{flex-wrap:wrap;gap:6px;margin-bottom:10px;display:flex}.wind-tunnel-container .btn.chip{border-radius:var(--r-pill);height:auto;padding:5px 10px;font-size:11.5px}.wind-tunnel-container .color-row{flex-direction:column;gap:8px;display:flex}.wind-tunnel-container .color-row label{color:var(--text-2);justify-content:space-between;align-items:center;font-size:12.5px;display:flex}.wind-tunnel-container .color-row input[type=color]{border:1px solid var(--border);background:var(--card);cursor:pointer;border-radius:6px;width:32px;height:24px;padding:0}.wind-tunnel-container .toggle-row{cursor:pointer;color:var(--text-2);user-select:none;justify-content:space-between;align-items:center;padding:10px 0;font-size:12.5px;display:flex}.wind-tunnel-container .switch{cursor:pointer;flex-shrink:0;width:40px;height:22px;display:inline-block;position:relative}.wind-tunnel-container .switch input{opacity:0;cursor:pointer;z-index:2;width:100%;height:100%;margin:0;position:absolute;inset:0}.wind-tunnel-container .switch .track{border-radius:var(--r-pill);background:var(--border-strong);transition:background .25s var(--ease);pointer-events:none;position:absolute;inset:0}.wind-tunnel-container .switch .thumb{width:18px;height:18px;transition:transform .3s var(--ease-spring);pointer-events:none;background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0006}.wind-tunnel-container .switch input:checked+.track{background:var(--cold)}.wind-tunnel-container .switch input:checked+.track+.thumb{transform:translate(18px)}.wind-tunnel-container .readout-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}@media (width<=600px){.wind-tunnel-container .readout-grid{grid-template-columns:1fr}}.wind-tunnel-container .stat-card{padding:16px 18px}.wind-tunnel-container .stat-card .stat-label{color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:11.5px;font-weight:600}.wind-tunnel-container .stat-card .stat-value{letter-spacing:-.02em;font-variant-numeric:tabular-nums;font-size:26px;font-weight:700}.wind-tunnel-container .stat-card.accent .stat-value{color:var(--cold)}.wind-tunnel-container .stat-card.accent2 .stat-value{color:var(--warm)}.wind-tunnel-container .eq-panel{display:none}.wind-tunnel-container .eq-panel.show{display:block}.wind-tunnel-container .eq-card{background:var(--card);border:1px solid var(--border);border-left:3px solid var(--cold);border-radius:var(--r-sm);font-family:var(--font-mono);color:var(--text-2);margin-bottom:10px;padding:10px 14px;font-size:12.5px;line-height:1.6}.wind-tunnel-container .eq-card .name{color:var(--text-3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;font-size:10px;display:block}.wind-tunnel-container .eq-card .res{color:var(--amber);font-weight:700}.wind-tunnel-container .graphstrip{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.wind-tunnel-container .graph-cell{flex-direction:column;height:180px;padding:14px;display:flex}.wind-tunnel-container .graph-cell h3{letter-spacing:.05em;text-transform:uppercase;color:var(--text-3);margin:0 0 8px;font-size:12px;font-weight:700}.wind-tunnel-container .graph-cell canvas{flex:1;width:100%;display:block}.wind-tunnel-container .export-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;display:flex}.wind-tunnel-container .export-bar .copy h3{margin:0 0 4px;font-size:18px;font-weight:700}.wind-tunnel-container .export-bar .copy p{color:var(--text-2);margin:0;font-size:13.5px}.wind-tunnel-container .export-bar .actions{gap:10px;display:flex}.wind-tunnel-container footer.foot{text-align:center;color:var(--text-3);padding:20px 0 0;font-size:12.5px}.wind-tunnel-container .user-guide-section{margin-top:1rem}.wind-tunnel-container .guide-accordions{flex-direction:column;gap:10px;display:flex}.wind-tunnel-container .guide-accordion{border-radius:var(--r-md);transition:box-shadow .2s var(--ease);overflow:hidden}.wind-tunnel-container .guide-accordion[open]{box-shadow:0 8px 32px -12px #0006}.wind-tunnel-container .guide-accordion summary{cursor:pointer;color:var(--text);transition:background .2s var(--ease);user-select:none;align-items:center;gap:14px;padding:16px 20px;font-size:15px;font-weight:600;list-style:none;display:flex}.wind-tunnel-container .guide-accordion summary::-webkit-details-marker{display:none}.wind-tunnel-container .guide-accordion summary:hover{background:var(--card-hover)}.wind-tunnel-container .guide-icon{border-radius:var(--r-sm);width:32px;height:32px;color:var(--accent);background:#0a84ff1f;flex-shrink:0;justify-content:center;align-items:center;display:flex}.wind-tunnel-container .guide-icon svg{width:15px;height:15px}.wind-tunnel-container .guide-title{flex:1}.wind-tunnel-container .guide-chev{width:16px;height:16px;color:var(--text-3);transition:transform .2s var(--ease);flex-shrink:0}.wind-tunnel-container .guide-accordion[open] .guide-chev{transform:rotate(90deg)}.wind-tunnel-container .guide-body{color:var(--text-2);padding:0 20px 20px 66px;font-size:14.5px;line-height:1.7}.wind-tunnel-container .guide-body p{margin-bottom:.8rem}.wind-tunnel-container .guide-body ul{margin:0 0 .8rem 1.2rem}.wind-tunnel-container .guide-body li{margin-bottom:.35rem}.wind-tunnel-container .guide-body code{font-family:var(--font-mono);color:var(--accent-2);background:#ffffff12;border-radius:4px;padding:1px 6px;font-size:13px}.wind-tunnel-container .guide-tip{border-left:3px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);background:#0a84ff12;margin-top:10px;padding:10px 14px;font-size:13.5px}.wind-tunnel-container .seo-content-section{border-top:1px solid var(--border);color:var(--text-2);margin-top:1rem;padding-top:3rem;font-size:15px;line-height:1.75}.wind-tunnel-container .author-card{border-radius:var(--r-lg);background:var(--card);border:1px solid var(--border);backdrop-filter:blur(12px);align-items:center;gap:18px;margin:1.8rem 0 2.2rem;padding:18px 22px;display:flex}.wind-tunnel-container .author-avatar{object-fit:cover;border:2px solid var(--accent);border-radius:50%;flex-shrink:0;width:64px;height:64px;box-shadow:0 4px 14px #0a84ff40}.wind-tunnel-container .author-details{flex-direction:column;gap:6px;min-width:0;display:flex}.wind-tunnel-container .author-header{flex-direction:column;gap:2px;display:flex}.wind-tunnel-container .author-label{text-transform:uppercase;letter-spacing:.08em;color:var(--accent-2);font-size:11px;font-weight:700}.wind-tunnel-container .author-identity{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.wind-tunnel-container .author-name{color:var(--text);font-size:17px;font-weight:800;line-height:1.2}.wind-tunnel-container .author-role{color:var(--accent);border-radius:var(--r-pill);white-space:nowrap;background:#0a84ff1f;border:1px solid #0a84ff40;padding:3px 10px;font-size:11.5px;font-weight:700}.wind-tunnel-container .author-bio{color:var(--text-2);margin:0;font-size:13.5px;line-height:1.55}.wind-tunnel-container .seo-content-section h2{color:var(--text);letter-spacing:-.02em;border-bottom:1px solid var(--border);margin:2.5rem 0 1rem;padding-bottom:.5rem;font-size:clamp(20px,2.5vw,26px);font-weight:800}.wind-tunnel-container .seo-content-section h2:first-child{margin-top:0}.wind-tunnel-container .seo-content-section h3{color:var(--text);letter-spacing:-.01em;margin:1.8rem 0 .7rem;font-size:18px;font-weight:700}.wind-tunnel-container .seo-content-section p{margin-bottom:1.1rem}.wind-tunnel-container .seo-content-section ul,.wind-tunnel-container .seo-content-section ol{margin:0 0 1.4rem 1.5rem;padding:0}.wind-tunnel-container .seo-content-section li{margin-bottom:.55rem}.wind-tunnel-container .seo-blockquote{border-left:4px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text);background:#0a84ff0f;margin:1.5rem 0;padding:1rem 1.4rem;font-size:14.5px;font-style:italic;line-height:1.7}.wind-tunnel-container .seo-content-section pre{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-md);font-family:var(--font-mono);color:var(--accent-2);margin:1.2rem 0;padding:1.1rem 1.3rem;font-size:13px;line-height:1.6;overflow-x:auto}.wind-tunnel-container .seo-content-section code{font-family:var(--font-mono);color:var(--accent-2);background:#ffffff0f;border-radius:4px;padding:2px 6px;font-size:13.5px}.wind-tunnel-container .seo-table-wrapper{border-radius:var(--r-md);border:1px solid var(--border);margin:1.2rem 0 2rem;overflow-x:auto}.wind-tunnel-container .seo-table{border-collapse:collapse;background:var(--card);width:100%;min-width:540px;font-size:13.5px}.wind-tunnel-container .seo-table th,.wind-tunnel-container .seo-table td{text-align:left;border-bottom:1px solid var(--border);padding:11px 15px}.wind-tunnel-container .seo-table th{color:var(--text);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;background:#ffffff0a;font-size:12px;font-weight:700}.wind-tunnel-container .seo-table tbody tr:last-child td{border-bottom:none}.wind-tunnel-container .seo-table tbody tr:hover td{background:#ffffff06}[data-theme=light] .wind-tunnel-container .seo-table th{background:#0000000a}.wind-tunnel-container .faq-list{flex-direction:column;gap:6px;margin:1rem 0 1.5rem;display:flex}.wind-tunnel-container .faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);transition:border-color .2s var(--ease);overflow:hidden}.wind-tunnel-container .faq-item[open]{border-color:var(--border-strong)}.wind-tunnel-container .faq-item summary{cursor:pointer;color:var(--text);transition:background .2s var(--ease);justify-content:space-between;align-items:center;gap:10px;padding:14px 18px;font-size:14.5px;font-weight:600;list-style:none;display:flex}.wind-tunnel-container .faq-item summary::-webkit-details-marker{display:none}.wind-tunnel-container .faq-item summary:after{content:"+";color:var(--text-3);transition:transform .2s var(--ease), color .2s;flex-shrink:0;font-size:18px}.wind-tunnel-container .faq-item[open] summary:after{color:var(--accent);transform:rotate(45deg)}.wind-tunnel-container .faq-item summary:hover{background:var(--card-hover)}.wind-tunnel-container .faq-item p{color:var(--text-2);margin:0;padding:0 18px 16px;font-size:14px;line-height:1.7}.wind-tunnel-container .seo-refs{margin:.5rem 0 0 1.2rem}.wind-tunnel-container .seo-refs li{margin-bottom:.7rem;font-size:14px}.wind-tunnel-container .tool-recs-section{border-top:1px solid var(--border);margin-top:1rem;padding-top:3rem}.wind-tunnel-container .tool-recs-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-top:.5rem;display:grid}.wind-tunnel-container .tool-rec-card{border-radius:var(--r-lg);color:inherit;transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);align-items:center;gap:16px;padding:18px 20px;text-decoration:none;display:flex;position:relative}.wind-tunnel-container .tool-rec-card:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:0 16px 40px -14px #00000080}.wind-tunnel-container .tool-rec-current{background:#0a84ff0a;border-color:#0a84ff4d}.wind-tunnel-container .tool-rec-icon{border-radius:var(--r-md);background:rgba(var(--icon-color,#0a84ff), .12);width:46px;height:46px;color:var(--icon-color,var(--accent));flex-shrink:0;justify-content:center;align-items:center;display:flex}.wind-tunnel-container .tool-rec-icon svg{width:20px;height:20px}.wind-tunnel-container .tool-rec-copy{flex:1;min-width:0}.wind-tunnel-container .tool-rec-copy h3{color:var(--text);align-items:center;gap:8px;margin:0 0 4px;font-size:15px;font-weight:700;display:flex}.wind-tunnel-container .tool-rec-copy p{color:var(--text-2);margin:0 0 8px;font-size:13px;line-height:1.5}.wind-tunnel-container .tool-rec-tag{text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);border-radius:var(--r-pill);border:1px solid var(--border);background:#ffffff0f;padding:2px 8px;font-size:11px;font-weight:700}.wind-tunnel-container .tool-rec-arrow{width:16px;height:16px;color:var(--text-3);opacity:0;transition:opacity .2s var(--ease), transform .2s var(--ease);flex-shrink:0;transform:translate(-4px)}.wind-tunnel-container .tool-rec-card:hover .tool-rec-arrow{opacity:1;transform:translate(0)}