.page-header h1,.page-header p,.page-header-inner{z-index:1;position:relative}.ad-label,.page-header-badge{text-transform:uppercase;letter-spacing:.1em}.calculator-card,.input-wrapper,.page-header,.page-header h1,.page-header p{position:relative}.input-field,.mode-btn{transition:all var(--transition)}.blog-content h2 .serif-accent,.page-header h1 .accent{font-family:var(--font-serif);text-transform:none;-webkit-text-fill-color:transparent;font-style:italic}.blog-content a,.faq-item a,.info-card a,.meta-line a{text-decoration:underline;text-underline-offset:2px}body{background:var(--clr-slate-100)}.page-header{background:var(--clr-slate-900);overflow:hidden;padding:4rem 1.5rem 5rem;text-align:center;color:var(--clr-white)}.page-header::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 80% at 20% 50%,rgba(13,207,180,.14) 0,transparent 60%),radial-gradient(ellipse 40% 60% at 80% 40%,rgba(34,211,238,.1) 0,transparent 55%)}.page-header::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(13,207,180,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(13,207,180,.05) 1px,transparent 1px);background-size:48px 48px}.page-header-inner{max-width:780px;margin:0 auto}.page-header-badge{display:inline-flex;align-items:center;gap:.45rem;padding:.3rem 1rem;border-radius:var(--radius-pill);background:rgba(13,207,180,.12);border:1px solid rgba(13,207,180,.3);font-size:.75rem;font-weight:600;color:var(--clr-teal);margin-bottom:1.25rem}.ad-label,.intro-text{color:var(--clr-slate-400)}.page-header h1{font-family:var(--font-display);font-size:clamp(2rem, 5.5vw, 3.5rem);font-weight:800;letter-spacing:.01em;text-transform:uppercase;line-height:1.05;margin-bottom:1rem}.page-header h1 .accent{font-weight:700;letter-spacing:-.01em;background:linear-gradient(135deg,var(--clr-teal) 0,var(--clr-cyan) 100%);-webkit-background-clip:text;background-clip:text}.page-header p{font-size:1.05rem;color:rgba(255,255,255,.7);line-height:1.7;max-width:680px;margin:0 auto;font-weight:300}.calc-page-wrap{max-width:1100px;margin:0 auto;padding:0 1.5rem}.ad-slot{margin:1.75rem 0;text-align:center}.ad-label{font-size:.68rem;margin-bottom:.35rem}.calculator-card{background:var(--clr-white);border-radius:var(--radius-lg);padding:2.5rem;box-shadow:var(--shadow-lift);border:1px solid var(--clr-slate-200);margin-top:-2.5rem;z-index:10;animation:.5s both slideUp}@keyframes slideUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.intro-text{font-size:.93rem;line-height:1.8;margin-bottom:1.75rem;padding-bottom:1.25rem;border-bottom:1px solid var(--clr-slate-200)}.input-label,.mode-btn{align-items:center;font-family:var(--font-display);font-weight:700;text-transform:uppercase;color:var(--clr-slate-600)}.mode-toggle{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.65rem;margin-bottom:2rem;background:var(--clr-slate-100);padding:.75rem;border-radius:var(--radius-md)}.input-section,.two-number-grid{margin-bottom:1.5rem}.mode-btn{padding:.85rem .75rem;background:0 0;border:2px solid transparent;border-radius:var(--radius-sm);cursor:pointer;font-size:.85rem;letter-spacing:.04em;user-select:none;display:flex;justify-content:center;gap:.4rem}.mode-btn:hover{background:var(--clr-teal-glow);border-color:rgba(13,207,180,.4);color:var(--clr-teal-deep)}.mode-btn.active{background:var(--clr-teal-deep);border-color:var(--clr-teal-deep);color:var(--clr-white);box-shadow:var(--shadow-teal)}.two-number-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.input-label{display:flex;gap:.4rem;font-size:.82rem;letter-spacing:.06em;margin-bottom:.75rem}.input-field{width:100%;padding:.95rem 1rem;border:2px solid var(--clr-slate-200);border-radius:var(--radius-sm);font-size:1.05rem;font-family:'Courier New',monospace;font-weight:600;color:var(--clr-slate-800);background:var(--clr-slate-100);box-sizing:border-box}.calculate-btn,.result-label,.result-title{font-family:var(--font-display);text-transform:uppercase}.input-field:focus{outline:0;border-color:var(--clr-teal);background:var(--clr-white);box-shadow:0 0 0 3px var(--clr-teal-glow)}.input-field::placeholder{color:var(--clr-slate-300);font-size:.88rem;font-weight:400}.input-hint{font-size:.78rem;color:var(--clr-slate-400);margin-top:.45rem;font-style:italic}.calculate-btn{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:.6rem;padding:1rem;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:1.05rem;font-weight:700;letter-spacing:.06em;color:var(--clr-white);background:var(--clr-teal-deep);box-shadow:var(--shadow-teal);transition:all var(--transition)}.info-card,.result-box{box-shadow:var(--shadow-soft);transition:all var(--transition)}.calculate-btn:hover{background:var(--clr-teal);color:var(--clr-slate-900);transform:translateY(-2px);box-shadow:0 12px 32px rgba(13,207,180,.4)}.calculate-btn:active{transform:scale(.99)}.results-section{margin-top:1.9rem;padding:1.75rem 1.5rem;background:var(--clr-slate-100);border:1px solid var(--clr-slate-200);border-left:3px solid var(--clr-teal);border-radius:var(--radius-md);display:none}.results-section.show{display:block}.result-title{display:flex;align-items:center;gap:.5rem;font-size:.85rem;font-weight:700;letter-spacing:.08em;color:var(--clr-slate-600);margin-bottom:1.15rem}.result-box{background:var(--clr-white);border-radius:var(--radius-sm);padding:1rem 1rem .9rem;border:1px solid var(--clr-slate-200);margin-bottom:1rem}.result-box:last-child{margin-bottom:0}.result-box:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}.result-label{font-size:.78rem;font-weight:700;letter-spacing:.07em;color:var(--clr-slate-500);margin-bottom:.5rem;display:flex;align-items:center;gap:.35rem}.result-value{font-size:1.25rem;font-weight:700;color:var(--clr-teal-deep);font-family:'Courier New',monospace;word-break:break-all;line-height:1.4}.standard-value{font-size:1rem}.result-main-box{background:var(--clr-teal-deep);border-color:var(--clr-teal-deep)}.result-main-box .result-label{color:rgba(255,255,255,.75)}.result-main-box .result-value{color:var(--clr-white);font-size:1.5rem}.breakdown-box{background:rgba(14,165,233,.05);border-left:3px solid #0ea5e9}.result-box.error-box,.steps-box{border-left:3px solid #ef4444}.breakdown-text,.steps-text{font-family:'Courier New',monospace;font-size:.87rem;color:var(--clr-slate-600);line-height:1.8;margin-top:.5rem}.download-btn,.info-card h3{font-family:var(--font-display);text-transform:uppercase}.breakdown-text strong,.faq-item strong,.info-card strong,.steps-text strong{color:var(--clr-slate-700);font-weight:600}.steps-box{background:rgba(239,68,68,.04)}.error-label{color:#b91c1c}.error-message{font-size:.93rem;color:#b91c1c;font-weight:500;margin-top:.35rem}.blog-content a:hover,.download-btn,.info-card a:hover{color:var(--clr-teal)}.download-buttons{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.1rem}.download-btn{flex:1 1 150px;padding:.65rem 1rem;background:0 0;border:1px solid rgba(13,207,180,.4);border-radius:var(--radius-pill);font-weight:600;font-size:.85rem;letter-spacing:.05em;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.4rem;transition:all var(--transition)}.blog-content,.info-card{background:var(--clr-white)}.download-btn:hover{background:rgba(13,207,180,.1);border-color:var(--clr-teal);transform:translateY(-1px)}.faq-inner h2,.meta-line{border-bottom:1px solid var(--clr-slate-200)}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;margin:2rem 0}.info-card{padding:1.4rem 1.25rem;border-radius:var(--radius-md);border:1px solid var(--clr-slate-200);border-left:3px solid var(--clr-teal)}.blog-content,.faq-inner,.info-card:hover{box-shadow:var(--shadow-card)}.info-card:hover{transform:translateY(-3px)}.info-card h3{font-size:.95rem;font-weight:700;letter-spacing:.04em;color:var(--clr-slate-800);margin-bottom:.5rem}.info-card p,.meta-line{color:var(--clr-slate-400)}.info-card p{font-size:.875rem;line-height:1.7}.info-card a{color:var(--clr-teal-deep);font-weight:500}.info-card code{background:var(--clr-slate-100);padding:.1rem .35rem;border-radius:4px;font-family:'Courier New',monospace;font-size:.85em;color:var(--clr-teal-deep);border:1px solid var(--clr-slate-200)}.blog-content h2,.blog-content h3{font-family:var(--font-display);font-weight:700;text-transform:uppercase}.blog-section{max-width:860px;margin:3rem auto 0;padding:0 1.5rem}.blog-content{border-radius:var(--radius-lg);padding:3rem 3.5rem;border:1px solid var(--clr-slate-200);line-height:1.9}.blog-content h2{font-size:clamp(1.5rem, 4vw, 2.2rem);letter-spacing:.01em;color:var(--clr-slate-800);margin-bottom:.5rem;line-height:1.15}.blog-content h2 .serif-accent{background:linear-gradient(135deg,var(--clr-teal-deep),var(--clr-cyan));-webkit-background-clip:text;background-clip:text}.meta-line{font-size:.82rem;margin-bottom:2rem;padding-bottom:1.5rem}.faq-item a,.meta-line a{color:var(--clr-teal-deep)}.blog-content h3{font-size:1.3rem;letter-spacing:.03em;color:var(--clr-slate-800);margin-top:2.5rem;margin-bottom:.9rem}.blog-content code,.formula-box{font-family:'Courier New',monospace}.blog-content p{color:var(--clr-slate-600);font-size:.975rem;margin-bottom:1.1rem;line-height:1.85}.blog-content ol,.blog-content ul{color:var(--clr-slate-600);margin-left:1.5rem;margin-bottom:1.25rem}.blog-content li{margin-bottom:.4rem;line-height:1.75;font-size:.975rem}.blog-content a{color:var(--clr-teal-deep);text-decoration-thickness:1px;transition:color var(--transition)}.blog-content strong,.example-box strong,.highlight-box strong{color:var(--clr-slate-800);font-weight:600}.blog-content em{color:var(--clr-slate-600);font-style:italic}.formula-box{background:#111827;color:#e5e7eb;border-radius:var(--radius-sm);padding:1.1rem 1.25rem;margin:1.1rem 0;font-size:.88rem;line-height:1.85;overflow-x:auto;border:1px solid rgba(255,255,255,.04);white-space:pre-wrap}.example-box,.highlight-box{padding:1.1rem 1.3rem;font-size:.93rem;color:var(--clr-slate-700)}.formula-box strong{color:var(--clr-teal);-webkit-text-fill-color:var(--clr-teal);font-weight:700}.formula-box code{color:#38bdf8;background:0 0;font-size:inherit}.example-box{background:rgba(14,165,233,.05);border:1px solid rgba(14,165,233,.2);border-left:3px solid #0ea5e9;border-radius:var(--radius-sm);margin:1.25rem 0;line-height:1.75}.highlight-box{background:linear-gradient(135deg,rgba(13,207,180,.06) 0,rgba(34,211,238,.06) 100%);border:1px solid rgba(13,207,180,.2);border-left:3px solid var(--clr-teal);border-radius:var(--radius-sm);margin-top:1.6rem;line-height:1.7}.blog-content code{background:var(--clr-slate-100);padding:.1rem .35rem;border-radius:4px;font-size:.87em;color:var(--clr-teal-deep);border:1px solid var(--clr-slate-200)}.faq-inner h2,.faq-item h3{font-family:var(--font-display);font-weight:700;text-transform:uppercase;color:var(--clr-slate-800)}.faq-section{max-width:860px;margin:2.5rem auto 4rem;padding:0 1.5rem}.faq-inner{background:var(--clr-white);border-radius:var(--radius-lg);padding:2.25rem 2.5rem;border:1px solid var(--clr-slate-200)}.faq-inner h2{font-size:1.4rem;letter-spacing:.03em;margin-top:0;margin-bottom:1.4rem;padding-bottom:1rem}.faq-item+.faq-item{border-top:1px solid var(--clr-slate-200);padding-top:1rem;margin-top:1rem}.faq-item h3{font-size:.95rem;letter-spacing:.04em;margin-bottom:.35rem}.faq-item p{font-size:.9rem;color:var(--clr-slate-400);line-height:1.75;margin:0}.faq-item code{background:var(--clr-slate-100);padding:.1rem .35rem;border-radius:4px;font-family:'Courier New',monospace;font-size:.86em;color:var(--clr-teal-deep);border:1px solid var(--clr-slate-200)}@media (max-width:768px){.page-header{padding:3rem 1.25rem 4rem}.page-header h1{font-size:1.9rem}.calculator-card{padding:1.5rem 1.25rem;margin-top:-1.5rem;border-radius:var(--radius-md)}.mode-toggle{grid-template-columns:repeat(2,1fr)}.info-grid,.two-number-grid{grid-template-columns:1fr}.blog-section,.faq-section{padding:0 1rem}.blog-content{padding:1.75rem 1.25rem}.blog-content h2{font-size:1.35rem}.blog-content h3{font-size:1.1rem}.faq-inner{padding:1.25rem}.download-buttons{flex-direction:column}}@media (max-width:480px){.calc-page-wrap{padding:0 .75rem}.mode-toggle{grid-template-columns:1fr}.input-field{font-size:.9rem}.result-value{font-size:1rem}.result-main-box .result-value{font-size:1.2rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}