:root{--bg-dark:#07071a;--bg-card:#ffffff0a;--bg-input:#ffffff0d;--accent:var(--calc-color-finance);--cyan:#22d3ee;--purple:#8b5cf6;--green:#34d399;--red:#f87171;--gold:#fbbf24;--text-main:#f0f0f5;--text-dim:#8b8ba3;--text-muted:#555570;--border:#ffffff14;--radius:14px;--font:"DM Sans", "Inter", system-ui, sans-serif;--font-mono:"JetBrains Mono", "SF Mono", monospace}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);color:var(--calc-text-primary);-webkit-font-smoothing:antialiased;background:linear-gradient(160deg,#07071a 0%,#0d0d26 50%,#07071a 100%) fixed;min-height:100vh;line-height:1.6}body:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(70% 50% at 85% 5%,#8b5cf61f 0%,#0000 60%),radial-gradient(50% 40% at 5% 95%,#22d3ee14 0%,#0000 55%);position:fixed;inset:0}.calc-hero{text-align:center;max-width:960px;margin:0 auto;padding:24px 24px 0}.calc-hero h1{color:var(--calc-text-primary);margin-bottom:10px;font-size:clamp(1.5rem,4vw,2.2rem);font-weight:700;line-height:1.2}.calc-hero p{color:var(--text-dim);max-width:680px;margin:0 auto;font-size:.95rem}.tab-bar{gap:4px;max-width:1000px;margin:0 auto;padding:12px 20px 0;display:flex;overflow-x:auto}.tab-btn{border:1px solid var(--border);background:var(--bg-card);color:var(--text-dim);cursor:pointer;white-space:nowrap;border-bottom:none;border-radius:8px 8px 0 0;padding:8px 18px;font-size:.87rem;font-weight:500;transition:color .2s,background .2s}.tab-btn.active{color:var(--calc-text-primary);background:#ffffff14;border-color:#ffffff26}.tab-btn:hover:not(.active){color:var(--calc-text-primary)}.tab-panel{display:none}.tab-panel.active{display:block}main{max-width:1000px;margin:0 auto;padding:0 20px 40px}.calc-grid{grid-template-columns:380px 1fr;align-items:start;gap:20px;padding-top:16px;display:grid}@media (width<=768px){.calc-grid{grid-template-columns:1fr}}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card-input h2,.card-result h2{color:var(--calc-text-primary);margin-bottom:16px;font-size:1rem;font-weight:600}.form-group{margin-bottom:14px}.form-group label{color:var(--text-dim);margin-bottom:6px;font-size:.82rem;font-weight:500;display:block}.input-with-unit{background:var(--bg-input);border:1px solid var(--border);border-radius:8px;align-items:center;transition:border-color .2s;display:flex;overflow:hidden}.input-with-unit:focus-within{border-color:var(--accent)}.input-prefix{color:var(--text-dim);font-size:.9rem;font-family:var(--font-mono);padding:0 10px}.glass-input{color:var(--calc-text-primary);width:100%;font-size:.95rem;font-family:var(--font-mono);background:0 0;border:none;outline:none;padding:9px 10px 9px 0}.glass-input::placeholder{color:var(--text-muted)}select.glass-input{cursor:pointer;background:var(--bg-input);border:1px solid var(--border);-webkit-appearance:none;appearance:none;border-radius:8px;width:100%;padding:9px 10px}select.glass-input:focus{border-color:var(--accent);outline:none}.chip-row{flex-wrap:wrap;gap:6px;display:flex}.chip{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:20px;padding:5px 12px;font-size:.8rem;transition:all .2s}.chip.active,.chip:hover{border-color:var(--accent);color:var(--calc-text-primary);background:#6366f11f}.preset-row{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:6px;margin-bottom:14px;padding-bottom:14px;display:flex}.preset-chip{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:16px;padding:4px 11px;font-size:.76rem;transition:all .2s}.preset-chip.active,.preset-chip:hover{border-color:var(--gold);color:var(--gold);background:#fbbf2414}.result-hero{text-align:center;border-bottom:1px solid var(--border);margin-bottom:16px;padding:18px 0 14px}.result-hero .label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin-bottom:6px;font-size:.78rem;font-weight:600}.result-hero .value{font-size:2.2rem;font-weight:700;font-family:var(--font-mono);margin-bottom:6px;line-height:1}.result-hero .value.green{color:var(--green)}.result-hero .value.red{color:var(--red)}.result-hero .sub{color:var(--text-dim);font-size:.78rem}.stat-grid{grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px;display:grid}.stat-cell{border:1px solid var(--border);background:#ffffff08;border-radius:10px;padding:10px 12px}.s-label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;font-size:.72rem}.s-value{font-size:1.05rem;font-weight:700;font-family:var(--font-mono);color:var(--calc-text-primary)}.s-value.green{color:var(--green)}.s-value.red{color:var(--red)}.s-value.gold{color:var(--gold)}.w4-rec-box{background:#6366f112;border:1px solid #6366f133;border-radius:10px;margin-bottom:14px;padding:14px 16px}.w4-rec-title{letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;font-size:.78rem;font-weight:700}.w4-rec-rows{flex-direction:column;gap:6px;display:flex}.w4-rec-row{justify-content:space-between;align-items:center;font-size:.85rem;display:flex}.w4-rec-row .rec-label{color:var(--text-dim)}.w4-rec-row .rec-value{font-family:var(--font-mono);color:var(--calc-text-primary);font-weight:600}.formula-strip{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.formula-pill{font-size:.74rem;font-family:var(--font-mono);color:var(--cyan);background:#22d3ee14;border:1px solid #22d3ee2e;border-radius:14px;padding:3px 10px}.gauge-wrap{height:180px;margin-bottom:8px;position:relative}.gauge-labels{color:var(--text-dim);justify-content:space-between;margin-top:2px;padding:0 8px;font-size:.72rem;display:flex}.gauge-labels .gl-owed{color:var(--red)}.gauge-labels .gl-refund{color:var(--green)}.action-bar{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.btn-action{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:8px;padding:7px 14px;font-size:.8rem;transition:all .2s}.btn-action:hover{border-color:var(--accent);color:var(--calc-text-primary)}.guidance-panel{max-width:720px;margin:0 auto;padding:20px 0}.guidance-panel h2{color:var(--calc-text-primary);margin-bottom:4px;font-size:1.1rem;font-weight:700}.guidance-panel .guide-subtitle{color:var(--text-dim);margin-bottom:24px;font-size:.85rem}.guide-steps{flex-direction:column;gap:16px;display:flex}.guide-step{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;align-items:flex-start;gap:16px;padding:16px;display:flex}.guide-step-num{width:32px;height:32px;color:var(--accent);font-size:.85rem;font-weight:700;font-family:var(--font-mono);background:#6366f126;border:1px solid #6366f14d;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.guide-step-body{flex:1;min-width:0}.guide-step-title{color:var(--calc-text-primary);margin-bottom:4px;font-size:.85rem;font-weight:600}.guide-step-desc{color:var(--text-dim);margin-bottom:6px;font-size:.8rem;line-height:1.55}.guide-step-rec{font-size:.82rem;font-family:var(--font-mono);color:var(--calc-text-primary);border-left:3px solid var(--accent);background:#ffffff0a;border-radius:0 6px 6px 0;padding:6px 10px}.guide-summary-box{background:#22d3ee0f;border:1px solid #22d3ee2e;border-radius:12px;margin-top:24px;padding:16px 20px}.guide-summary-title{letter-spacing:.08em;text-transform:uppercase;color:var(--cyan);margin-bottom:8px;font-size:.78rem;font-weight:700}.guide-summary-text{color:var(--text-dim);font-size:.85rem;line-height:1.6}.section-divider{border:none;border-top:1px solid var(--border);margin:14px 0}.page-sections-outer{max-width:1600px;margin:0 auto;padding:0 1.5rem 3rem}.toast-container{z-index:9999;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;right:24px}[data-theme=light] body{color:#0f172a;background:#e8edf5}[data-theme=light] body:before{display:none}[data-theme=light] .calc-hero h1{color:#0f172a}[data-theme=light] .calc-hero p{color:#475569}[data-theme=light] .tab-btn{color:#64748b;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .tab-btn.active{color:#0f172a;background:#fff;border-color:#0000002e}[data-theme=light] .card{background:#fff;border-color:#0000001a;box-shadow:0 2px 10px #0000000f}[data-theme=light] .card-input h2,[data-theme=light] .card-result h2{color:#0f172a}[data-theme=light] .form-group label{color:#475569}[data-theme=light] .input-with-unit{background:#f0f4f9;border-color:#0000001f}[data-theme=light] .input-with-unit:focus-within{border-color:#6366f1}[data-theme=light] .input-prefix{color:#64748b}[data-theme=light] .glass-input{color:#0f172a}[data-theme=light] .glass-input::placeholder{color:#94a3b8}[data-theme=light] select.glass-input{color:#0f172a;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .chip{color:#64748b;border-color:#0000001f}[data-theme=light] .chip.active,[data-theme=light] .chip:hover{color:#4f46e5;background:#6366f114;border-color:#6366f1}[data-theme=light] .preset-chip{color:#64748b;border-color:#0000001f}[data-theme=light] .preset-chip.active,[data-theme=light] .preset-chip:hover{color:#b45309;background:#b453090f;border-color:#b45309}[data-theme=light] .result-hero{border-bottom-color:#00000014}[data-theme=light] .result-hero .label{color:#64748b}[data-theme=light] .result-hero .value.green{color:#047857}[data-theme=light] .result-hero .value.red{color:#e11d48}[data-theme=light] .result-hero .sub{color:#64748b}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#00000014}[data-theme=light] .s-label{color:#64748b}[data-theme=light] .s-value{color:#0f172a}[data-theme=light] .s-value.green{color:#047857}[data-theme=light] .s-value.red{color:#e11d48}[data-theme=light] .s-value.gold{color:#b45309}[data-theme=light] .w4-rec-box{background:#6366f10d;border-color:#6366f133}[data-theme=light] .w4-rec-title{color:#4f46e5}[data-theme=light] .w4-rec-row .rec-label{color:#475569}[data-theme=light] .w4-rec-row .rec-value{color:#0f172a}[data-theme=light] .formula-pill{color:#0891b2;background:#0891b20f;border-color:#0891b22e}[data-theme=light] .gauge-labels .gl-owed{color:#e11d48}[data-theme=light] .gauge-labels .gl-refund{color:#047857}[data-theme=light] .gauge-labels{color:#64748b}[data-theme=light] .btn-action{color:#64748b;border-color:#0000001f}[data-theme=light] .btn-action:hover{color:#0f172a;border-color:#6366f1}[data-theme=light] .guide-step{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000d}[data-theme=light] .guide-step-num{color:#4f46e5;background:#6366f114;border-color:#6366f133}[data-theme=light] .guide-step-title{color:#0f172a}[data-theme=light] .guide-step-desc{color:#475569}[data-theme=light] .guide-step-rec{color:#0f172a;background:#f0f4f9;border-left-color:#6366f1}[data-theme=light] .guide-summary-box{background:#0891b20a;border-color:#0891b22e}[data-theme=light] .guide-summary-title{color:#0891b2}[data-theme=light] .guide-summary-text{color:#475569}[data-theme=light] .guidance-panel h2{color:#0f172a}[data-theme=light] .guidance-panel .guide-subtitle{color:#64748b}[data-theme=light] .section-divider{border-top-color:#00000014}.result-interpretation{color:var(--calc-text-faded,#88a);border-left:3px solid var(--calc-cyan,#22d3ee);border-radius:var(--calc-radius-md,12px);background:#22d3ee0f;margin:12px 0 4px;padding:12px 16px;font-size:.92rem;line-height:1.55}.result-interpretation:empty{display:none}[data-theme=light] .result-interpretation{color:#334155;background:#eff9fb;border-left-color:#0891b2}