:root {
  --navy-900: #0f172a; --navy-800: #1e293b; --navy-700: #334155; --navy-600: #475569;
  --navy-500: #64748b; --navy-400: #94a3b8; --navy-300: #cbd5e1; --navy-200: #e2e8f0;
  --navy-100: #f1f5f9; --navy-50: #f8fafc;
  --green-600: #16a34a; --green-500: #22c55e; --green-400: #4ade80; --green-100: #dcfce7;
  --amber-500: #f59e0b; --red-500: #ef4444; --white: #ffffff;
  --bg: var(--white); --bg-card: var(--navy-50);
  --bg-hero: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 100%);
  --text: var(--navy-900); --text-muted: var(--navy-500); --text-inv: var(--white);
  --border: var(--navy-200); --accent: var(--green-600); --accent-hover: var(--green-500);
  --shadow: 0 1px 3px rgba(0,0,0,.1); --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1);
  --radius: 12px; --radius-sm: 8px; --max-w: 1200px; --transition: .2s ease;
}
[data-theme="dark"] {
  --bg: var(--navy-900); --bg-card: var(--navy-800);
  --bg-hero: linear-gradient(135deg, #020617 0%, var(--navy-900) 100%);
  --text: var(--navy-100); --text-muted: var(--navy-400); --border: var(--navy-700);
  --shadow: 0 1px 3px rgba(0,0,0,.3); --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.4);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;transition:background var(--transition),color var(--transition)}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent-hover)}
.container{max-width:var(--max-w);margin:0 auto;padding:0 1rem}
.section{padding:4rem 0}.section-sm{padding:2rem 0}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--text)}
h1{font-size:clamp(1.75rem,4vw,2.5rem);margin-bottom:1rem}
h2{font-size:clamp(1.4rem,3vw,2rem);margin-bottom:.75rem}
h3{font-size:clamp(1.15rem,2.5vw,1.5rem);margin-bottom:.5rem}
p{margin-bottom:1rem}.text-muted{color:var(--text-muted)}.text-center{text-align:center}
.text-sm{font-size:.875rem}.text-lg{font-size:1.125rem}.font-bold{font-weight:700}
.text-green{color:var(--green-600)}.text-amber{color:var(--amber-500)}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-sm);font-weight:600;font-size:1rem;cursor:pointer;border:none;transition:all var(--transition);text-decoration:none;min-height:48px}
.btn-primary{background:var(--accent);color:var(--white)}
.btn-primary:hover{background:var(--accent-hover);color:var(--white);transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;color:var(--accent);border:2px solid var(--accent)}
.btn-outline:hover{background:var(--accent);color:var(--white)}
.btn-sm{padding:.5rem 1rem;font-size:.875rem;min-height:40px}
.btn-lg{padding:1rem 2rem;font-size:1.125rem}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);transition:all var(--transition)}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}
.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-1{gap:.5rem}.gap-2{gap:1rem}.gap-3{gap:1.5rem}.gap-4{gap:2rem}.flex-wrap{flex-wrap:wrap}
.nav{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:.75rem 1rem;display:flex;align-items:center;justify-content:space-between}
.nav-logo{font-weight:800;font-size:1.25rem;color:var(--text);display:flex;align-items:center;gap:.5rem}
.nav-logo span{color:var(--green-600)}
.nav-links{display:flex;gap:1.5rem;align-items:center;list-style:none}
.nav-links a{color:var(--text-muted);font-weight:500;font-size:.9rem}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:.5rem;min-height:48px;min-width:48px}
.theme-toggle{background:none;border:none;cursor:pointer;color:var(--text-muted);padding:.5rem;min-height:48px;min-width:48px;font-size:1.25rem}
.hero{background:var(--bg-hero);color:var(--text-inv);padding:4rem 0;text-align:center}
.hero h1{color:var(--white);font-size:clamp(2rem,5vw,3rem)}
.hero p{color:var(--navy-300);font-size:1.15rem;max-width:700px;margin:0 auto 2rem}
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;min-width:700px}
th{background:var(--navy-800);color:var(--white);padding:.75rem 1rem;text-align:left;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}
td{padding:.75rem 1rem;border-bottom:1px solid var(--border);vertical-align:middle}
tr:hover td{background:var(--bg-card)}
.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600}
.badge-green{background:var(--green-100);color:var(--green-600)}
[data-theme="dark"] .badge-green{background:rgba(34,197,94,.15)}
.badge-amber{background:#fef3c7;color:#d97706}
.badge-top{background:var(--green-600);color:var(--white)}
.stars{color:var(--amber-500);letter-spacing:2px}
.breadcrumb{padding:1rem 0;font-size:.875rem}
.breadcrumb a{color:var(--text-muted)}.breadcrumb span{color:var(--text-muted);margin:0 .5rem}
.toc{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:2rem}
.toc h3{margin-bottom:.75rem;font-size:1rem}
.toc ol{padding-left:1.5rem}.toc li{margin-bottom:.4rem}
.toc a{color:var(--text-muted);font-size:.9rem}.toc a:hover{color:var(--accent)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{padding:1rem 0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1.05rem;list-style:none}
.faq-q::after{content:'+';font-size:1.5rem;color:var(--text-muted);transition:transform var(--transition)}
.faq-item.open .faq-q::after{content:'−'}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:500px}
.faq-a p{padding-bottom:1rem;color:var(--text-muted)}
.product-card{position:relative}
.product-card .product-rank{position:absolute;top:-8px;left:-8px;background:var(--green-600);color:var(--white);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem}
.product-meta{display:flex;flex-wrap:wrap;gap:.75rem;margin:.75rem 0;font-size:.9rem;color:var(--text-muted)}
.product-meta span{display:flex;align-items:center;gap:.3rem}
.price{font-size:1.5rem;font-weight:800;color:var(--green-600)}
.price-old{text-decoration:line-through;color:var(--text-muted);font-size:.9rem;font-weight:400}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1rem 0}
.pros li::before{content:'✅ '}.cons li::before{content:'❌ '}
.pros li,.cons li{list-style:none;margin-bottom:.4rem;font-size:.9rem}
.filters{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:2rem}
.filter-btn{padding:.5rem 1rem;border-radius:999px;border:1px solid var(--border);background:var(--bg);color:var(--text-muted);cursor:pointer;font-size:.85rem;font-weight:500;transition:all var(--transition);min-height:40px}
.filter-btn:hover,.filter-btn.active{background:var(--accent);color:var(--white);border-color:var(--accent)}
.footer{background:var(--navy-900);color:var(--navy-400);padding:3rem 0 1.5rem;margin-top:4rem}
.footer a{color:var(--navy-300)}.footer a:hover{color:var(--white)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2rem}
.footer h4{color:var(--white);margin-bottom:1rem;font-size:.9rem;text-transform:uppercase;letter-spacing:.05em}
.footer ul{list-style:none}.footer li{margin-bottom:.5rem}
.footer-bottom{border-top:1px solid var(--navy-700);padding-top:1.5rem;text-align:center;font-size:.8rem}
.calculator{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}
.calc-row{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1rem;align-items:end}
.calc-field{flex:1;min-width:150px}
.calc-field label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.4rem;color:var(--text-muted)}
.calc-field input,.calc-field select{width:100%;padding:.65rem .75rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--text);font-size:1rem;min-height:48px}
.calc-result{background:var(--green-600);color:var(--white);padding:1.5rem;border-radius:var(--radius-sm);text-align:center;margin-top:1rem}
.calc-result .big{font-size:2rem;font-weight:800}
.info-box{padding:1rem 1.25rem;border-radius:var(--radius-sm);margin:1.5rem 0;border-left:4px solid}
.info-box.tip{background:var(--green-100);border-color:var(--green-600)}
[data-theme="dark"] .info-box.tip{background:rgba(34,197,94,.1)}
.info-box.warning{background:#fef3c7;border-color:var(--amber-500)}
[data-theme="dark"] .info-box.warning{background:rgba(245,158,11,.1)}
[id]{scroll-margin-top:80px}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);flex-direction:column;padding:1rem;gap:.75rem}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
  .hero{padding:3rem 0}.section{padding:2.5rem 0}
  .pros-cons{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media print{.nav,.footer,.theme-toggle,.nav-toggle{display:none}}