.tech-hero{background:linear-gradient(135deg,var(--primary-navy) 0%,#0d3a5c 100%);padding:100px 0 60px;color:var(--white)}
.tech-hero h1{color:var(--white);font-size:2.5rem;margin-bottom:1rem}
.tech-hero p{color:rgba(255,255,255,.85);font-size:1.125rem;max-width:800px}
.tech-hero .hero-buttons{margin-top:1.5rem}
.param-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin:2rem 0}
.param-card{background:var(--white);border-radius:12px;padding: 1rem;border-left:4px solid var(--primary-blue)}
.param-card .symbol{font-size:.875rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.5px}
.param-card .value-range{font-size:1.25rem;font-weight:700;color:var(--primary-navy);margin:.25rem 0}
.param-card .desc{font-size:.875rem;color:var(--text-medium)}
.step-card{background:var(--white);border:1px solid var(--border-gray);border-radius:16px;padding: 1rem;margin-bottom: 0.75rem}
.step-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}
.step-number{width:56px;height:56px;background:linear-gradient(135deg,var(--primary-blue) 0%,#0068b8 100%);color:var(--white);border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.3rem;flex-shrink:0;box-shadow:0 4px 16px rgba(0,82,155,0.25);transition:all .4s cubic-bezier(0.4,0,0.2,1)}.step-number:hover{background:linear-gradient(135deg,var(--accent-gold) 0%,#d4a83a 100%);color:var(--primary-navy);transform:scale(1.12) rotate(-3deg);box-shadow:0 8px 24px rgba(201,162,39,0.35)}
.step-card h3{color:var(--primary-navy);font-size:1.375rem;margin:0}
.equation-box{background:var(--light-gray);border-radius:8px;padding:1.25rem 1.5rem;margin:1rem 0;font-family:'Courier New',monospace;font-size:1.05rem;color:var(--primary-navy);border-left:4px solid var(--accent-gold);overflow-x:auto}
.equation-box .eq-label{font-family:Inter,sans-serif;font-size:.8rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:.5rem}
.example-box{background:#f0f7ff;border:1px solid #cce0ff;border-radius:8px;padding:1.25rem;margin:1rem 0}
.example-box strong{color:var(--primary-blue);display:block;margin-bottom:.5rem}
.calc-container{background:var(--white);border:2px solid var(--primary-blue);border-radius:16px;padding: 1rem;margin:2rem 0}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap: 1rem}
@media(max-width:768px){.calc-grid{grid-template-columns:1fr}}
.calc-inputs{display:flex;flex-direction:column;gap:1rem}
.calc-inputs label{display:flex;flex-direction:column;font-size:.875rem;font-weight:600;color:var(--primary-navy);gap:.25rem}
.calc-inputs input,.calc-inputs select{padding:.625rem .875rem;border:1px solid var(--border-gray);border-radius:6px;font-size:.875rem;font-family:inherit}
.calc-inputs input:focus,.calc-inputs select:focus{outline:none;border-color:var(--primary-blue)}
.calc-inputs small{color:var(--text-light);font-weight:400}
.calc-results{background:var(--light-gray);border-radius:12px;padding: 1rem}
.calc-results h4{color:var(--primary-navy);margin-bottom:1rem;font-size:1.125rem}
.result-row{display:flex;justify-content:space-between;align-items:center;padding:.625rem 0;border-bottom:1px solid var(--border-gray)}
.result-row:last-child{border-bottom:none}
.result-row .label{font-size:.875rem;color:var(--text-medium)}
.result-row .value{font-weight:700;color:var(--primary-navy)}
.result-row .value.highlight{color:var(--success-green);font-size:1.125rem}
.btn-calc{width:100%;padding:.875rem;background:var(--primary-blue);color:var(--white);border:none;border-radius:6px;font-weight:600;cursor:pointer;transition:background .2s;margin-top:.5rem}
.btn-calc:hover{background:var(--primary-navy)}
.faq-item{background:var(--white);border:1px solid var(--border-gray);border-radius:12px;margin-bottom:1rem;overflow:hidden}
.faq-question{padding:1.25rem 1.5rem;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;color:var(--primary-navy);transition:background .2s}
.faq-question:hover{background:var(--light-gray)}
.faq-question i{transition:transform .2s}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 1.5rem;max-height:0;overflow:hidden;transition:all .3s ease;color:var(--text-medium)}
.faq-item.active .faq-answer{padding:0 1.5rem 1.5rem;max-height:500px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;margin:1.5rem 0}
.related-card{background:var(--white);border:1px solid var(--border-gray);border-radius:12px;padding: 1rem;text-decoration:none;color:inherit;transition:all .3s;display:block}
.related-card:hover{border-color:var(--primary-blue);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.related-card i{font-size:1.75rem;color:var(--primary-blue);margin-bottom:.75rem;display:block}
.related-card h4{color:var(--primary-navy);margin-bottom:.5rem}
.related-card p{font-size:.875rem;color:var(--text-medium);margin:0}
.comparison-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem}
.comparison-table th{background:var(--primary-navy);color:var(--white);padding:.75rem 1rem;text-align:left;font-weight:600}
.comparison-table td{padding:.75rem 1rem;border-bottom:1px solid var(--border-gray);vertical-align:top}
.comparison-table tr:nth-child(even){background:var(--light-gray)}
.comparison-table td:first-child{font-weight:600;color:var(--primary-navy)}
.check-green{color:var(--success-green);font-weight:700}
.cross-red{color:#dc3545;font-weight:700}
.warn-amber{color:#f0ad4e;font-weight:700}
.model-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.875rem}
.model-table th{background:var(--primary-navy);color:var(--white);padding:.75rem 1rem;text-align:left;font-weight:600}
.model-table td{padding:.625rem 1rem;border-bottom:1px solid var(--border-gray)}
.model-table tr:nth-child(even){background:var(--light-gray)}
.note-box{background:#fff8e1;border-left:4px solid var(--accent-gold);padding:1rem 1.25rem;border-radius:0 8px 8px 0;margin:1rem 0;font-size:.9rem;color:var(--text-medium)}
.note-box strong{color:var(--primary-navy)}
.tech-nav{display:flex;flex-wrap:wrap;gap:.5rem;margin:1.5rem 0;position:sticky;top:70px;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);padding:1rem 0;border-bottom:1px solid var(--border-gray)}
.tech-nav a{padding:.5rem 1rem;background:var(--light-gray);border-radius:20px;font-size:.8rem;font-weight:500;color:var(--text-medium);text-decoration:none;transition:all .2s}
.tech-nav a:hover,.tech-nav a.active{background:var(--primary-blue);color:var(--white)}
@media(max-width:768px){.tech-hero{padding:80px 0 40px}.tech-hero h1{font-size:1.75rem}.step-card{padding:1.25rem}.param-grid{grid-template-columns:1fr 1fr}.tech-nav{gap:.375rem;padding:.75rem 0}.tech-nav a{padding:.4rem .75rem;font-size:.75rem}}
.nav-pills{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;margin:2rem 0}
.nav-pill{padding:10px 20px;background:var(--light-gray);border-radius:24px;font-size:.875rem;font-weight:500;color:var(--text-medium);text-decoration:none;transition:all .2s ease}
.nav-pill:hover{background:var(--primary-light);color:var(--primary-blue)}
.nav-pill.active{background:var(--primary-blue);color:var(--white)}