:root{--bg-app:#f1f5f9;--accent:#2563eb;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--header-h:60px;--sidebar-w:320px}*{box-sizing:border-box;margin:0;padding:0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}body{background:var(--bg-app);color:var(--text-main);-webkit-font-smoothing:antialiased;height:100vh;font-family:Roboto Mono,monospace;overflow:hidden}.main-header{height:var(--header-h);border-bottom:1px solid var(--border);z-index:1000;background:#fff;justify-content:space-between;align-items:center;width:100%;padding:0 32px;display:flex;position:fixed;top:0}.header-left,.header-right{align-items:center;display:flex}.logo-box{letter-spacing:-.04em;color:var(--accent);cursor:default;align-items:center;gap:10px;font-size:22px;font-weight:700;display:flex}.logo-box.clickable{cursor:pointer}.logo-box.clickable:hover{opacity:.7;transition:opacity .2s}.logo-dot{background:var(--accent);border-radius:50%;flex-shrink:0;width:12px;height:12px;animation:2.5s infinite pulse-dot;box-shadow:0 0 #2563eb66}@keyframes pulse-dot{0%{box-shadow:0 0 #2563eb66}70%{box-shadow:0 0 0 8px #2563eb00}to{box-shadow:0 0 #2563eb00}}.btn-ghost{border:1px solid var(--border);letter-spacing:.05em;cursor:pointer;color:var(--text-muted);background:0 0;border-radius:6px;align-items:center;gap:8px;padding:7px 14px;font-family:Roboto Mono,monospace;font-size:10px;font-weight:700;transition:all .2s;display:flex}.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}.landing-container{margin-top:var(--header-h);height:calc(100vh - var(--header-h));padding:0;overflow-y:auto}.hero-section{background:#fff;background-image:linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);border-bottom:1px solid var(--border);text-align:center;background-position:top;background-size:40px 40px;padding:80px 48px;position:relative}.hero-section:after{content:"";background:linear-gradient(90deg, transparent, var(--accent), transparent);opacity:.3;height:1px;position:absolute;bottom:0;left:0;right:0}.hero-title{letter-spacing:-.02em;color:var(--text-main);text-transform:uppercase;margin-bottom:40px;font-size:32px;font-weight:800;line-height:40px}.hero-subtitle{color:var(--text-muted);max-width:700px;margin:0 auto;font-size:14px;font-weight:500;line-height:20px}.subjects-grid{background:var(--bg-app);grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;padding:56px 48px;display:grid}.unit-card{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:0;flex-direction:column;transition:all .2s;display:flex;position:relative;overflow:hidden}.unit-card:hover{border-color:var(--card-color,var(--accent));box-shadow:0 8px 16px -4px #0f172a1a}.unit-card-header{border-bottom:1px solid var(--border);color:var(--text-muted);background:#f8fafc;justify-content:space-between;align-items:center;padding:8px 16px;font-family:Roboto Mono,monospace;font-size:9px;font-weight:700;display:flex}.unit-card-visual{background-color:#fff;background-image:linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);border-bottom:1px solid var(--border);height:100px;color:var(--text-muted);background-size:15px 15px;justify-content:center;align-items:center;transition:all .2s;display:flex}.unit-card:hover .unit-card-visual{color:var(--card-color,var(--accent));background-color:#f1f5f9}.unit-card-body{flex:1;padding:20px 16px}.unit-card-name{color:var(--text-main);text-transform:uppercase;letter-spacing:-.01em;margin-bottom:6px;font-size:14px;font-weight:800}.unit-card-desc{color:var(--text-muted);font-family:Roboto Mono,monospace;font-size:10px;line-height:1.4}.unit-card-footer{background:#fcfdfe;border-top:1px solid #f1f5f9;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.card-status{color:var(--text-muted);text-transform:uppercase;align-items:center;gap:6px;font-size:8px;font-weight:800;display:flex}.unit-card:hover .card-status{color:var(--card-color,var(--accent))}.status-led{background:#cbd5e1;border-radius:50%;width:5px;height:5px;transition:all .2s}.unit-card:hover .status-led{background:var(--led-color,var(--accent));box-shadow:0 0 6px var(--led-color,var(--accent))}.app-main{margin-top:var(--header-h);grid-template-columns:var(--sidebar-w) 1fr;height:calc(100vh - var(--header-h));display:grid}.sidebar{border-right:1px solid var(--border);background:#fff;flex-direction:column;gap:32px;padding:32px 24px;display:flex;overflow-y:auto}.sidebar-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.sidebar-footer{border-top:1px solid var(--border);margin-top:auto;padding-top:16px}.section-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.15em;margin-bottom:12px;font-size:9px;font-weight:700;display:block}.function-params-card{box-shadow:none;border:none;border-radius:0;padding:0}.param-row{border-bottom:1px solid #f1f5f9;margin-bottom:24px;padding-bottom:12px}.math-input-wrapper{margin-top:8px}.math-keypad{flex-wrap:wrap;gap:4px;margin-bottom:8px;display:flex}.key-btn{border:1px solid var(--border);color:var(--text-main);cursor:pointer;background:#f8fafc;border-radius:4px;min-width:28px;padding:4px 8px;font-family:Roboto Mono,monospace;font-size:10px;font-weight:700;transition:all .2s}.key-btn:hover{border-color:var(--accent);color:var(--accent);background:#fff;box-shadow:0 2px 4px #2563eb1a}.math-preview{border:1px dashed var(--border);min-height:40px;color:var(--text-main);background:#f8fafc;border-radius:6px;justify-content:center;align-items:center;margin-top:12px;padding:12px;display:flex}.param-header{justify-content:space-between;align-items:baseline;margin-bottom:12px;display:flex}.param-value{color:var(--text-main);text-align:right;min-width:auto;box-shadow:none;background:0 0;border-radius:0;padding:0;font-family:Roboto Mono,monospace;font-size:13px;font-weight:800}input[type=range]{-webkit-appearance:none;background:#e2e8f0;border:none;border-radius:0;outline:none;width:100%;height:2px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;cursor:pointer;border:2px solid var(--accent);background:#fff;border-radius:50%;width:12px;height:12px;margin-top:-5px;box-shadow:0 2px 4px #0000001a}.dynamic-preview{border:1px solid var(--border);background:#fff;background-image:radial-gradient(var(--border) .5px, transparent .5px);background-size:10px 10px;border-radius:2px;margin-top:8px;padding:24px;position:relative}.preview-formula{color:var(--text-main);text-align:center;margin-top:12px;font-family:Roboto Mono,monospace;font-size:14px;font-weight:700;line-height:1.6}.dynamic-preview:before{content:"READOUT";background:var(--text-main);color:#fff;letter-spacing:.1em;padding:2px 6px;font-size:8px;font-weight:800;position:absolute;top:0;left:0}.btn-primary{background:var(--accent);color:#fff;letter-spacing:.1em;cursor:pointer;border:none;border-radius:6px;width:100%;padding:12px;font-family:Roboto Mono,monospace;font-size:11px;font-weight:700;transition:background .2s}.btn-primary:hover{background:#1d4ed8}.content-area{background:var(--bg-app);padding:24px 24px 80px;display:block;overflow-y:auto}.content-header{border:1px solid var(--border);background:#fff;border-radius:8px;justify-content:space-between;align-items:center;margin-bottom:20px;padding:4px 16px 4px 4px;display:flex}.tabs-scroll{gap:4px;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;letter-spacing:.05em;background:0 0;border:none;border-radius:6px;padding:10px 16px;font-family:Roboto Mono,monospace;font-size:10px;font-weight:700;transition:all .2s}.tab-btn.active{color:var(--accent);background:#eff6ff}.tab-btn:hover:not(.active){background:#f8fafc}.mode-switch{background:#f1f5f9;border-radius:6px;gap:3px;padding:3px;display:flex}.mode-btn{color:var(--text-muted);cursor:pointer;letter-spacing:.05em;background:0 0;border:none;border-radius:4px;padding:6px 12px;font-family:Roboto Mono,monospace;font-size:10px;font-weight:700;transition:all .2s}.mode-btn.active{color:var(--text-main);background:#fff;box-shadow:0 1px 2px #00000014}.content-body{flex-direction:column;gap:16px;display:flex}.diagram-card{border:1px solid var(--border);background:#fff;border-radius:8px;flex-direction:column;height:520px;display:flex;position:relative;overflow:hidden}.diagram-viewport{flex:1;overflow:hidden}.cartesian-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.results-panel{border:1px solid var(--border);background:#fff;border-radius:6px;min-width:180px;padding:12px 16px;font-size:11px;position:absolute;bottom:16px;left:16px;box-shadow:0 4px 6px -1px #0000001a}.markdown-body{border:1px solid var(--border);background:#fff;border-radius:8px;padding:28px 32px;font-size:13px;line-height:1.8}.markdown-body h1,.markdown-body h2,.markdown-body h3{letter-spacing:-.02em;margin:24px 0 12px}.markdown-body code{background:#f1f5f9;border-radius:3px;padding:2px 6px;font-family:Roboto Mono,monospace;font-size:12px}#dashboard-root{flex-direction:column;gap:56px;padding:40px 48px 64px;display:flex}.dashboard-section-header{border-bottom:2px solid var(--border);justify-content:space-between;align-items:flex-end;margin-bottom:24px;padding-bottom:16px;display:flex}.dashboard-section-title{letter-spacing:-.03em;margin-bottom:4px;font-size:22px;font-weight:700}.dashboard-section-tag{color:var(--text-muted);letter-spacing:.12em;text-transform:uppercase;font-size:10px}.badge-soon{letter-spacing:.1em;color:var(--text-muted);border:1px solid var(--border);background:#f1f5f9;border-radius:4px;padding:4px 10px;font-size:9px;font-weight:700}.units-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.unit-card{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:12px;padding:28px;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 2px #0000000a}.unit-card:hover{border-color:var(--card-color,var(--accent));transform:translateY(-3px);box-shadow:0 8px 20px -4px #0000001a}.unit-card--disabled{opacity:.45;cursor:default;filter:grayscale(.5)}.unit-card--disabled:hover{border-color:var(--border);transform:none;box-shadow:0 1px 2px #0000000a}.unit-card-icon{background:#f8fafc;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:16px;transition:background .2s;display:flex}.unit-card-name{letter-spacing:-.02em;margin-bottom:8px;font-size:14px;font-weight:700}.unit-card-desc{color:var(--text-muted);margin-bottom:20px;font-size:11px;line-height:1.7}.unit-card-cta{letter-spacing:.08em;font-size:10px;font-weight:700}.language-mermaid svg{border:1px solid var(--border);background:#fff;border-radius:4px;margin:20px auto;padding:10px;display:block;max-width:450px!important;height:auto!important}@media (width<=768px){body{height:auto!important;overflow-y:auto!important}.units-grid{grid-template-columns:1fr}.hero-title{font-size:24px}.app-main{min-height:calc(100vh - var(--header-h));flex-direction:column!important;height:auto!important;display:flex!important}.sidebar{border-right:none;border-bottom:1px solid var(--border);gap:16px;width:100%;padding:16px;height:auto!important;overflow-y:visible!important}.param-row{margin-bottom:16px}.content-area{width:100%;overflow-x:hidden}.content-header{flex-direction:column-reverse;align-items:stretch;height:auto}.header-controls{border-left:none;border-bottom:1px solid var(--border);justify-content:center}.tabs-scroll{overflow-x:auto}.diagram-card{flex-direction:column;height:auto;min-height:400px;display:flex}.diagram-viewport{flex:none;height:350px}.results-panel{border:none;border-top:1px dashed var(--border);width:100%;box-shadow:none;border-radius:0;position:static}.markdown-body{padding:16px}}