:root{--accent:#bd00ff;--accent-glow:#bd00ff59;--bg-app:#050510;--bg-card:#0d0d1f;--bg-input:#111128;--text-primary:#fff;--text-secondary:#88a;--text-muted:#557;--cyan:#00f3ff;--purple:#bc13fe;--green:#10b981;--red:#f43f5e;--amber:#f59e0b;--border:#ffffff14;--radius:12px;--font-mono:"JetBrains Mono", monospace}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-app);color:var(--text-primary);min-height:100vh;font-family:Inter,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.calc-breadcrumb{color:var(--text-muted);padding:10px 24px;font-size:.79rem}.calc-breadcrumb a{color:var(--text-secondary);transition:color .2s}.calc-breadcrumb a:hover{color:var(--cyan)}.main-container{max-width:1200px;margin:0 auto;padding:24px}.calc-title{margin-bottom:8px;font-size:2rem;font-weight:700}.calc-subtitle{color:var(--text-secondary);margin-bottom:24px;font-size:.95rem}.tab-nav{border-bottom:1px solid 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#bd00ff33;margin-bottom:20px;padding:24px}.hero-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-family:var(--font-mono);margin-bottom:6px}.hero-value{color:var(--accent);font-size:1.8rem;font-weight:800;line-height:1.1}.hero-sub{color:var(--text-secondary);margin-top:6px;font-size:.87rem}.stat-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px;display:grid}@media (width<=600px){.stat-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--purple);border-radius:var(--radius);padding:13px}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.71rem;font-family:var(--font-mono);margin-bottom:5px}.stat-value{color:var(--text-primary);font-size:.92rem;font-weight:700}.formula-strip{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.formula-pill{color:var(--accent);white-space:nowrap;font-size:.75rem;font-family:var(--font-mono);background:#bd00ff1a;border:1px solid #bd00ff4d;border-radius:20px;padding:5px 14px}.fp-peak{color:var(--green);background:#10b9811a;border-color:#10b9814d}.alert-stack{flex-direction:column;gap:8px;margin-bottom:20px;display:flex}.alert{border-left:3px solid;border-radius:8px;padding:10px 14px;font-size:.84rem;line-height:1.5}.alert-info{color:#7fffd4;background:#00d1c114;border-color:#00d1c1}.alert-success{border-color:var(--green);color:#6ee7b7;background:#10b98114}.alert-warn{border-color:var(--amber);color:#fcd34d;background:#f59e0b14}.btn{cursor:pointer;border:none;border-radius:8px;padding:9px 18px;font-family:inherit;font-size:.84rem;font-weight:600;transition:all .2s}.btn-outline{border:1px solid var(--border);color:var(--text-secondary);background:0 0}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.action-btns{gap:8px;margin-top:16px;display:flex}.mode-toggle{background:var(--bg-input);border-radius:8px;gap:4px;margin-bottom:16px;padding:4px;display:flex}.mode-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;flex:1;padding:8px 4px;font-family:inherit;font-size:.81rem;transition:all .2s}.mode-btn.active{background:var(--accent);color:#fff;font-weight:600}.range-slider{width:100%;accent-color:var(--accent);cursor:pointer;margin-top:4px}.slider-val{color:var(--accent);font-weight:700}.dpo-timeline{flex-wrap:wrap;gap:4px;margin:16px 0;display:flex}.dpo-day{text-align:center;background:var(--bg-input);border:1px solid var(--border);cursor:pointer;border-radius:6px;min-width:52px;padding:8px 4px;font-size:.75rem;transition:transform .15s,background .15s}.dpo-day:hover{background:#ffffff0f;transform:translateY(-2px)}.dpo-day .dpo-num{margin-bottom:2px;font-size:1rem;font-weight:700}.dpo-day .dpo-date{color:var(--text-muted);font-size:.68rem}.dpo-ov{border-color:var(--amber);background:#f59e0b26}.dpo-impl{background:#bd00ff1f;border-color:#bd00ff4d}.dpo-peak{border-color:var(--accent);background:#bd00ff38}.dpo-hcg{border-color:var(--green);background:#10b9811f}.dpo-test{border-color:var(--cyan);background:#00f3ff1a}.dpo-today{box-shadow:0 0 8px #f59e0b4d;border:2px solid var(--amber)!important}.dpo-today-dot{background:var(--amber);vertical-align:middle;border-radius:50%;width:6px;height:6px;margin-left:3px;display:inline-block}.timeline-legend{color:var(--text-secondary);flex-wrap:wrap;gap:16px;margin-top:12px;font-size:.75rem;display:flex}.legend-dot{vertical-align:middle;border-radius:2px;width:10px;height:10px;margin-right:4px;display:inline-block}.dpo-tooltip-box{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--purple);border-radius:8px;margin-top:12px;padding:12px 14px;font-size:.85rem;animation:.15s fadeIn}.dpo-tt-header{color:var(--text-primary);justify-content:space-between;align-items:center;margin-bottom:6px;font-weight:700;display:flex}.dpo-tt-text{color:var(--text-secondary);line-height:1.5}.dpo-tt-close{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:.9rem}.dpo-tt-close:hover{color:var(--text-primary)}@keyframes 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14px}.dpo-card-bio{color:var(--text-secondary);margin-bottom:8px;font-size:.84rem;line-height:1.5}.dpo-card-symptoms{color:var(--text-muted);font-size:.8rem;line-height:1.5}.dpo-card-sym-label{color:var(--text-secondary);font-weight:600}.phase-ovulation .dpo-card-phase{color:var(--amber);background:#f59e0b26}.phase-ovulation{border-left:3px solid var(--amber)}.phase-travel .dpo-card-phase{color:var(--text-secondary);background:#8888aa26}.phase-travel{border-left:3px solid var(--text-muted)}.phase-implantation .dpo-card-phase{color:var(--accent);background:#bd00ff26}.phase-implantation{border-left:3px solid var(--accent)}.phase-implantation-peak .dpo-card-phase{color:#d946ef;background:#bd00ff40}.phase-implantation-peak{border-left:3px solid #d946ef}.phase-hcg .dpo-card-phase{color:var(--green);background:#10b98126}.phase-hcg{border-left:3px solid var(--green)}.phase-test .dpo-card-phase{color:var(--cyan);background:#00f3ff26}.phase-test{border-left:3px solid 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0}.formula-grid2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px;display:grid}.f-card2{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px}.f-card2 h4{color:var(--accent);margin-bottom:8px;font-size:.9rem}.f-equation2{font-family:var(--font-mono);color:var(--cyan);background:#bd00ff14;border:1px solid #bd00ff33;border-radius:8px;margin-bottom:10px;padding:10px 14px;font-size:.82rem}.f-card2 p{color:var(--text-secondary);font-size:.82rem;line-height:1.5}.gloss-section2{padding:32px 0}.gloss-grid2{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;display:grid}.g-item2{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.g-item2 dt{color:var(--accent);margin-bottom:4px;font-size:.88rem;font-weight:700}.g-item2 dd{color:var(--text-secondary);font-size:.82rem;line-height:1.5}.ex-section2{padding:32px 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#0000004d}.toast-success{background:#0891b2}.toast-warn{background:#d97706}.toast-error{background:#dc2626}@media (width<=768px){.main-container{padding:16px}.calc-title{font-size:1.5rem}.tab-btn{padding:8px 12px;font-size:.81rem}.dpo-cards-grid,.method-cards-grid{grid-template-columns:1fr}.method-stats{flex-direction:column;gap:4px}}[data-theme=light]{--bg-app:#e8edf5;--bg-card:#fff;--bg-input:#e2e8f0;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--border:#0000001f;--accent:#7c3aed;--accent-glow:#7c3aed26;--cyan:#0e7490;--purple:#7c3aed;--green:#065f46;--red:#dc2626;--amber:#a16207;--bg-dark:#e8edf5}[data-theme=light] body{color:#0f172a;background:#e8edf5}[data-theme=light] .calc-breadcrumb{color:#64748b}[data-theme=light] .calc-breadcrumb a{color:#475569}[data-theme=light] .calc-breadcrumb a:hover{color:#7c3aed}[data-theme=light] input,[data-theme=light] select{color-scheme:light}[data-theme=light] .form-input,[data-theme=light] 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#7c3aed;box-shadow:0 1px 4px #0000000f}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .formula-pill{color:#7c3aed;background:#7c3aed14;border-color:#7c3aed33}[data-theme=light] .fp-peak{color:#065f46;background:#065f4614;border-color:#065f4633}[data-theme=light] .alert-info{color:#134e4a;background:#eff9fb;border-color:#0e7490}[data-theme=light] .alert-success{color:#065f46;background:#f0fdf4;border-color:#065f46}[data-theme=light] .alert-warn{color:#92400e;background:#fffbeb;border-color:#a16207}[data-theme=light] .btn-outline{color:#475569;border-color:#00000026}[data-theme=light] .btn-outline:hover{color:#7c3aed;border-color:#7c3aed}[data-theme=light] .mode-toggle{background:#e8eef4}[data-theme=light] .mode-btn{color:#475569}[data-theme=light] .mode-btn.active{color:#fff;background:#7c3aed}[data-theme=light] .range-slider{accent-color:#7c3aed}[data-theme=light] .slider-val{color:#7c3aed}[data-theme=light] .dpo-day{color:#0f172a;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .dpo-day:hover{background:#e2e8f0;transform:translateY(-2px)}[data-theme=light] .dpo-day .dpo-date{color:#64748b}[data-theme=light] .dpo-ov{background:#fffbeb;border-color:#a162074d}[data-theme=light] .dpo-impl{background:#7c3aed14;border-color:#7c3aed40}[data-theme=light] .dpo-peak{background:#7c3aed26;border-color:#7c3aed66}[data-theme=light] .dpo-hcg{background:#065f4614;border-color:#065f4640}[data-theme=light] .dpo-test{background:#0e749014;border-color:#0e749040}[data-theme=light] .dpo-today{box-shadow:0 0 8px #a1620733;border-color:#a16207!important}[data-theme=light] .dpo-today-dot{background:#a16207}[data-theme=light] .timeline-legend{color:#475569}[data-theme=light] .dpo-tooltip-box{background:#fff;border-color:#0000001f #0000001f #0000001f #7c3aed;box-shadow:0 2px 8px #0000001a}[data-theme=light] .dpo-tt-header{color:#0f172a}[data-theme=light] .dpo-tt-text{color:#334155}[data-theme=light] .dpo-tt-close{color:#64748b}[data-theme=light] .dpo-tt-close:hover{color:#0f172a}[data-theme=light] .dpo-key-item{color:#475569}[data-theme=light] .dpo-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .dpo-card:hover{box-shadow:0 4px 12px #0000001a}[data-theme=light] .dpo-card-header{border-bottom-color:#0000000f}[data-theme=light] .dpo-card-day{color:#0f172a}[data-theme=light] .dpo-card-bio{color:#334155}[data-theme=light] .dpo-card-symptoms{color:#475569}[data-theme=light] .dpo-card-sym-label{color:#334155}[data-theme=light] .phase-ovulation{border-left-color:#a16207}[data-theme=light] .phase-ovulation .dpo-card-phase{color:#92400e;background:#fffbeb}[data-theme=light] .phase-travel{border-left-color:#94a3b8}[data-theme=light] .phase-travel .dpo-card-phase{color:#475569;background:#f0f4f9}[data-theme=light] .phase-implantation{border-left-color:#7c3aed}[data-theme=light] .phase-implantation .dpo-card-phase{color:#7c3aed;background:#7c3aed1a}[data-theme=light] .phase-implantation-peak{border-left-color:#9333ea}[data-theme=light] .phase-implantation-peak .dpo-card-phase{color:#7c3aed;background:#9333ea1f}[data-theme=light] .phase-hcg{border-left-color:#065f46}[data-theme=light] .phase-hcg .dpo-card-phase{color:#065f46;background:#f0fdf4}[data-theme=light] .phase-test{border-left-color:#0e7490}[data-theme=light] .phase-test .dpo-card-phase{color:#0e7490;background:#eff9fb}[data-theme=light] .test-item{background:#f0f4f9;border-color:#0000001a}[data-theme=light] .test-item.test-recommended{background:#f0fdf4;border-color:#065f46}[data-theme=light] .test-day{color:#7c3aed}[data-theme=light] .test-info strong{color:#0f172a}[data-theme=light] .test-info p{color:#475569}[data-theme=light] .test-recommended .test-day{color:#065f46}[data-theme=light] .method-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .method-card-header{border-left-color:#7c3aed}[data-theme=light] .method-card-title{color:#0f172a}[data-theme=light] .method-card-desc{color:#64748b}[data-theme=light] .mtl-day{color:#64748b;background:#f0f4f9}[data-theme=light] .mtl-start{color:#334155;background:#e2e8f0}[data-theme=light] .mtl-impl{color:#7c3aed;background:#7c3aed1f}[data-theme=light] .mtl-peak{color:#fff;background:#7c3aed4d}[data-theme=light] .mtl-test{color:#0e7490;background:#0e74901a}[data-theme=light] .method-stats{border-top-color:#0000000f}[data-theme=light] .method-stat-label{color:#64748b}[data-theme=light] .method-stat-val,[data-theme=light] .diff-item strong{color:#0f172a}[data-theme=light] .diff-item p{color:#475569}[data-theme=light] .chart-desc{color:#64748b}[data-theme=light] .next-step-banner{background:#0e749012;border-color:#0e74902e}[data-theme=light] .nsb-text{color:#475569}[data-theme=light] .nsb-link{color:#0e7490}[data-theme=light] .nsb-link:hover{color:#0f172a}[data-theme=light] .nsb-sep{color:#94a3b8}[data-theme=light] .how-step{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .how-step-num{background:#7c3aed}[data-theme=light] .how-step h3{color:#0f172a}[data-theme=light] .how-step p{color:#475569}[data-theme=light] .f-card2{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .f-card2 h4{color:#7c3aed}[data-theme=light] .f-equation2{color:#0e7490;background:#7c3aed0f;border-color:#7c3aed26}[data-theme=light] .f-card2 p{color:#475569}[data-theme=light] .g-item2{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .g-item2 dt{color:#7c3aed}[data-theme=light] .g-item2 dd{color:#475569}[data-theme=light] .ex-card2{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .ex-num2{color:#7c3aed}[data-theme=light] .ex-card2 h4{color:#0f172a}[data-theme=light] .ex-input2{color:#64748b}[data-theme=light] .ex-result2{color:#334155;background:#7c3aed0d}[data-theme=light] .calc-article article{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .calc-article h3{color:#7c3aed}[data-theme=light] .calc-article p{color:#475569}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;transition:box-shadow .2s,border-color .2s;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#7c3aed59;box-shadow:0 2px 10px #7c3aed14}[data-theme=light] .faq-item[open]{border-color:#7c3aed66 #7c3aed66 #7c3aed66 #7c3aed;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #7c3aed1a}[data-theme=light] .faq-item__question{color:#0f172a;padding:14px 16px}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after,[data-theme=light] .faq-item__question:hover{color:#7c3aed}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}[data-theme=light] .section-title{color:#0f172a}[data-theme=light] .tab-intro{color:#475569}[data-theme=light] .info-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000f}[data-theme=light] .toast{box-shadow:0 4px 12px #00000026}[data-theme=light] .toast-success{background:#0e7490}[data-theme=light] .toast-warn{background:#a16207}