:root{--graf-bg-primary:#f8fafc;--graf-bg-secondary:#f1f5f9;--graf-bg-surface:#fff;--graf-bg-elevated:#f8fafc;--graf-text-primary:#0f172a;--graf-text-secondary:#475569;--graf-text-muted:#64748b;--graf-border-default:#cbd5e1;--graf-border-subtle:#e2e8f0;--graf-brand-primary:#2563eb;--graf-brand-primary-hover:#1d4ed8;--graf-brand-secondary:#0f766e;--graf-color-success:#16a34a;--graf-color-warning:#d97706;--graf-color-danger:#dc2626;--graf-color-info:#0284c7;--graf-space-1:.25rem;--graf-space-2:.5rem;--graf-space-3:.75rem;--graf-space-4:1rem;--graf-space-5:1.25rem;--graf-space-6:1.5rem;--graf-radius-sm:4px;--graf-radius-md:6px;--graf-radius-lg:10px;--graf-font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--graf-font-mono:"JetBrains Mono", "Fira Code", Consolas, monospace;--graf-shadow-sm:0 1px 2px 0 #0f172a0d;--graf-shadow-md:0 4px 6px -1px #0f172a14, 0 2px 4px -2px #0f172a0d}*,:before,:after{box-sizing:border-box}body{font-family:var(--graf-font-sans);background-color:var(--graf-bg-primary);color:var(--graf-text-primary);-webkit-font-smoothing:antialiased;margin:0;line-height:1.45}.graf-container{max-width:1200px;padding:var(--graf-space-4);margin:0 auto}.graf-lead{color:var(--graf-text-secondary);font-size:.95rem}.graf-card{background:var(--graf-bg-surface);border:1px solid var(--graf-border-subtle);border-radius:var(--graf-radius-lg);padding:var(--graf-space-4);box-shadow:var(--graf-shadow-sm)}.graf-btn{border-radius:var(--graf-radius-md);border:1px solid var(--graf-border-default);background:var(--graf-bg-surface);color:var(--graf-text-primary);cursor:pointer;user-select:none;white-space:nowrap;justify-content:center;align-items:center;gap:.35rem;padding:.4rem .75rem;font-family:inherit;font-size:.8125rem;font-weight:500;transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s;display:inline-flex}.graf-btn:hover:not(:disabled){background:var(--graf-bg-secondary);border-color:#94a3b8}.graf-btn:disabled{opacity:.5;cursor:not-allowed}.graf-btn--sm{border-radius:var(--graf-radius-sm);padding:.25rem .55rem;font-size:.75rem}.graf-btn--lg{padding:.55rem 1.1rem;font-size:.925rem}.graf-btn--primary{background:var(--graf-brand-primary);border-color:var(--graf-brand-primary);color:#fff}.graf-btn--primary:hover:not(:disabled){background:var(--graf-brand-primary-hover);border-color:var(--graf-brand-primary-hover);color:#fff}.graf-btn--secondary{background:var(--graf-bg-secondary);border-color:var(--graf-border-default);color:var(--graf-text-primary)}.graf-btn--outline{border-color:var(--graf-border-default);color:var(--graf-text-primary);background:0 0}.graf-btn--outline:hover:not(:disabled){background:var(--graf-bg-secondary)}.graf-btn--ghost{color:var(--graf-text-secondary);background:0 0;border-color:#0000}.graf-btn--ghost:hover:not(:disabled){background:var(--graf-bg-secondary);color:var(--graf-text-primary)}.graf-form-control{flex-direction:column;gap:.2rem;margin-bottom:.45rem;display:flex}.graf-label{color:var(--graf-text-secondary);font-size:.75rem;font-weight:500}.graf-input{border:1px solid var(--graf-border-default);border-radius:var(--graf-radius-sm);background:var(--graf-bg-surface);width:100%;color:var(--graf-text-primary);padding:.35rem .5rem;font-family:inherit;font-size:.8125rem;transition:border-color .15s,box-shadow .15s}.graf-input:focus{border-color:var(--graf-brand-primary);outline:none;box-shadow:0 0 0 2px #2563eb26}.graf-input--sm{padding:.22rem .4rem;font-size:.75rem}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--graf-body-bg,#faf9f7);color:var(--graf-body-color,#2d2a26)}.app-layout{height:100vh;display:flex;position:relative}.app-sidebar{min-width:260px;max-width:500px;padding:var(--graf-spacing-md,16px);background:var(--graf-surface,#fff);flex-shrink:0;overflow-y:auto}.sidebar-drag-handle{cursor:col-resize;background:var(--graf-border,#e8e4dc);z-index:20;width:6px;height:100%;position:absolute;top:0}.sidebar-drag-handle:hover,.sidebar-drag-handle:active{background:var(--graf-primary,#00809e)}.app-main{flex:1;overflow:hidden}.app-main>div:first-child{padding:var(--graf-spacing-md,16px)}.app-sidebar .graf-form-group{margin-bottom:var(--graf-spacing-xs,4px)}.app-sidebar .graf-form-label{font-size:var(--graf-font-size-xs,12px);min-width:80px}.app-sidebar .graf-form-control{font-size:var(--graf-font-size-sm,14px);padding:4px 8px}.param-row{align-items:center;gap:var(--graf-spacing-sm,8px);margin-bottom:var(--graf-spacing-xs,4px);display:flex}.param-label{font-size:var(--graf-font-size-xs,12px);text-align:right;color:var(--graf-warm-600,#6b6560);flex:0 0 85px}.param-unit{font-size:var(--graf-font-size-xs,12px);color:var(--graf-warm-500,#8a8580)}.section-card{border:1px solid var(--graf-border,#e8e4dc);border-radius:var(--graf-border-radius,8px);padding:var(--graf-spacing-sm,8px) var(--graf-spacing-md,16px);margin-bottom:var(--graf-spacing-sm,8px);background:var(--graf-surface,#fff)}.section-title{font-size:var(--graf-font-size-sm,14px);color:var(--graf-primary,#00809e);margin-bottom:var(--graf-spacing-xs,4px);font-weight:600}.btn-row{gap:var(--graf-spacing-xs,4px);flex-wrap:wrap;display:flex}.derived-params{font-size:var(--graf-font-size-xs,12px);color:var(--graf-warm-600,#6b6560);border-top:1px solid var(--graf-border,#e8e4dc);flex-wrap:wrap;gap:8px 12px;margin-top:4px;padding:4px 0;display:flex}.derived-params span{cursor:help;border-bottom:1px dotted var(--graf-warm-300)}.section-subtitle{font-size:var(--graf-font-size-xs,12px);color:var(--graf-warm-500,#8a8580);text-transform:uppercase;letter-spacing:.5px;font-weight:600}.setup-overlay{z-index:100;backdrop-filter:blur(4px);background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.setup-wizard{background:var(--graf-surface,#fff);border-radius:12px;width:90vw;max-width:560px;padding:32px;box-shadow:0 8px 32px #00000026}.setup-wizard-title{color:var(--graf-primary,#00809e);margin-bottom:24px;font-size:20px;font-weight:700}.setup-section{margin-bottom:20px}.setup-section-label{text-transform:uppercase;letter-spacing:.5px;color:var(--graf-warm-500,#8a8580);margin-bottom:8px;font-size:12px;font-weight:600}.setup-topology-grid{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.setup-topology-btn{border:2px solid var(--graf-border,#e8e4dc);background:var(--graf-surface,#fff);cursor:pointer;border-radius:8px;flex-direction:column;align-items:center;padding:10px 8px;transition:border-color .15s,background .15s;display:flex}.setup-topology-btn:hover{border-color:var(--graf-primary,#00809e)}.setup-topology-btn.active{border-color:var(--graf-primary,#00809e);background:color-mix(in srgb, var(--graf-primary,#00809e) 8%, transparent)}.setup-topology-label{color:var(--graf-body-color,#2d2a26);font-size:15px;font-weight:700}.setup-topology-desc{color:var(--graf-warm-500,#8a8580);text-align:center;margin-top:2px;font-size:11px}.setup-ways-list{flex-direction:column;gap:8px;display:flex}.setup-way-row{align-items:center;gap:12px;display:flex}.setup-way-name{min-width:120px;color:var(--graf-body-color,#2d2a26);font-size:14px;font-weight:600}.setup-way-select{flex:1;font-size:13px}.setup-start-btn{width:100%;margin-top:8px;padding:10px;font-size:15px;font-weight:600}.accordion-section{border:1px solid var(--graf-border,#e8e4dc);border-radius:var(--graf-border-radius,8px);margin-bottom:var(--graf-spacing-sm,8px);background:var(--graf-surface,#fff);overflow:hidden}.accordion-section.accordion-expanded{border-color:var(--graf-primary,#00809e)}.accordion-header{cursor:pointer;text-align:left;width:100%;font-size:var(--graf-font-size-sm,14px);background:0 0;border:none;align-items:center;gap:6px;padding:8px 12px;display:flex}.accordion-header:hover{background:color-mix(in srgb, var(--graf-primary,#00809e) 5%, transparent)}.accordion-arrow{color:var(--graf-warm-400,#a09a94);flex-shrink:0;width:12px;font-size:10px}.accordion-title{color:var(--graf-primary,#00809e);flex-shrink:0;font-weight:600}.accordion-summary{font-size:var(--graf-font-size-xs,12px);color:var(--graf-warm-500,#8a8580);text-overflow:ellipsis;white-space:nowrap;margin-left:4px;overflow:hidden}.accordion-body{padding:4px 12px 12px}.crossover-point-card{border:1px solid var(--graf-warm-200,#d9d4ce);background:color-mix(in srgb, var(--graf-primary,#00809e) 3%, transparent);border-radius:6px;margin-bottom:6px;padding:6px 10px}.crossover-point-label{color:var(--graf-primary,#00809e);margin-bottom:4px;font-size:12px;font-weight:600}@media (width<=480px){.setup-topology-grid{grid-template-columns:repeat(2,1fr)}.setup-wizard{border-radius:0;flex-direction:column;justify-content:center;width:100vw;max-width:100vw;min-height:100vh;padding:20px;display:flex}}