@import url(https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap);:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--secondary-color:#ef4444;--secondary-hover:#dc2626;--success-color:#10b981;--success-bg:#f0fdf4;--success-border:#86efac;--bg-color:#f3f4f6;--card-bg:#ffffff;--text-main:#1f2937;--text-muted:#6b7280;--border-color:#e5e7eb;--focus-ring:rgba(79, 70, 229, 0.4);--shadow-sm:0 1px 2px 0 rgba(0, 0, 0, 0.05);--shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.1),0 2px 4px -1px rgba(0, 0, 0, 0.06);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.1),0 4px 6px -2px rgba(0, 0, 0, 0.05);--radius:16px;--gradient:linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Outfit,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);background-image:radial-gradient(at 0 0,rgba(79,70,229,.05) 0,transparent 50%),radial-gradient(at 100% 0,rgba(124,58,237,.05) 0,transparent 50%);color:var(--text-main);min-height:100vh;padding:24px;line-height:1.6;display:flex;flex-direction:column;align-items:center}.container{width:100%;max-width:1000px;margin:0 auto;animation:fadeIn .6s cubic-bezier(.16,1,.3,1)}.top-nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px}.lang-switcher select{padding:8px 12px;border-radius:8px;border:2px solid var(--border-color);background-color:var(--card-bg);font-family:inherit;font-weight:500;color:var(--text-main);cursor:pointer;transition:all .2s;outline:0}.lang-switcher select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px var(--focus-ring)}header{text-align:center;margin-bottom:40px}header h1{font-size:2.75rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:12px;letter-spacing:-.02em}header p{color:var(--text-muted);font-size:1.1rem}.converter-card{background:var(--card-bg);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.8);backdrop-filter:blur(10px);display:flex;flex-direction:column;gap:32px;max-width:500px;margin:0 auto 40px auto;transition:transform .3s ease,box-shadow .3s ease}.converter-card:hover{transform:translateY(-4px);box-shadow:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04)}.input-group{display:flex;flex-direction:column;gap:10px;position:relative}.input-group label{font-weight:600;font-size:.9rem;color:var(--text-main);text-transform:uppercase;letter-spacing:.05em;display:flex;justify-content:space-between}.input-group input{width:100%;padding:16px 20px;font-size:1.5rem;border:2px solid var(--border-color);border-radius:12px;font-family:inherit;transition:all .25s cubic-bezier(.4, 0, .2, 1);background-color:#f9fafb;color:var(--text-main)}.input-group input:focus{outline:0;border-color:var(--primary-color);box-shadow:0 0 0 4px var(--focus-ring);background-color:#fff}.result-group label{color:var(--success-color)}.result-group input{background-color:var(--success-bg);border-color:var(--success-border);font-weight:700;color:#065f46}.result-group input:focus{border-color:var(--success-color);box-shadow:0 0 0 4px rgba(16,185,129,.2)}.arrow-divider{display:flex;justify-content:center;align-items:center;color:var(--text-muted);font-size:1.5rem;opacity:.5}.button-actions{display:flex;gap:16px;justify-content:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:12px;font-weight:600;cursor:pointer;transition:all .2s;border:none;text-decoration:none;font-family:inherit;font-size:1rem;gap:8px}.btn-outline{background:0 0;border:2px solid var(--border-color);color:var(--text-main)}.btn-outline:hover{background:#f9fafb;border-color:var(--text-muted)}.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 14px 0 rgba(79,70,229,.39)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,70,229,.23);filter:brightness(1.1)}.ads-wrapper{margin:40px auto;width:100%;max-width:728px;min-height:90px;background:#fff;border-radius:12px;padding:15px;box-shadow:var(--shadow-sm);display:flex;justify-content:center;align-items:center;overflow:hidden}.quick-answers{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:40px;width:100%}.answer-card{background:var(--card-bg);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-md);border:1px solid var(--border-color);transition:transform .3s ease;border-top:4px solid var(--primary-color)}.answer-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.answer-card h2{font-size:1.1rem;color:var(--text-main);margin-bottom:12px;font-weight:700}.answer-card p{font-size:1rem;color:var(--text-muted)}.answer-card strong{color:var(--primary-color);font-size:1.1rem}.info-section{background:#fff;border-radius:var(--radius);padding:48px;box-shadow:var(--shadow-sm);margin-bottom:60px;text-align:left}.info-section h2{font-size:1.85rem;margin-bottom:24px;margin-top:40px;color:var(--text-main);border-left:5px solid var(--primary-color);padding-left:20px;line-height:1.2}.info-section h2:first-of-type{margin-top:0}.info-section h3{font-size:1.35rem;margin:32px 0 16px 0;color:var(--text-main);font-weight:600}.info-section p{margin-bottom:20px;color:#4b5563;line-height:1.8}.info-section ol,.info-section ul{margin-bottom:24px;padding-left:24px}.info-section li{margin-bottom:12px;color:#4b5563}.info-section pre{background:#f8fafc;padding:20px;border-radius:12px;border:1px solid var(--border-color);margin-bottom:24px;overflow-x:auto}.info-section code{font-family:'Courier New',Courier,monospace;font-weight:700;color:var(--primary-color);font-size:1.1rem}.table-responsive{overflow-x:auto;margin:32px 0;border-radius:12px;border:1px solid var(--border-color)}.info-section table{width:100%;border-collapse:collapse;min-width:500px}.info-section td,.info-section th{padding:16px;border-bottom:1px solid var(--border-color);text-align:left}.info-section th{background:#f9fafb;font-weight:600;color:var(--text-main)}.info-section tr:last-child td{border-bottom:none}.info-section tr:nth-child(2n){background:#fcfcfd}.related-links{list-style:none;padding-left:0!important;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.related-links a{display:block;padding:12px 16px;background:#f9fafb;border-radius:8px;color:var(--primary-color);text-decoration:none;font-weight:500;transition:all .2s;border:1px solid var(--border-color)}.related-links a:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm)}.faq-item{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border-color)}.faq-item:last-child{border-bottom:none}.faq-item h3{margin-top:0;margin-bottom:12px;font-size:1.15rem}.faq-item p{margin-bottom:0}.flashcard-section{margin:40px 0 60px 0;width:100%}.flashcard-section h2{font-size:1.85rem;margin-bottom:24px;color:var(--text-main);border-left:5px solid var(--primary-color);padding-left:20px}.flashcard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;width:100%}.flashcard{background:#fff;border-radius:12px;padding:24px;text-align:center;text-decoration:none;color:var(--text-main);font-weight:600;font-size:1.1rem;border:1px solid var(--border-color);transition:all .3s cubic-bezier(.4, 0, .2, 1);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;position:relative;overflow:hidden}.flashcard:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--primary-color);background:#fdfdfd}.flashcard::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:var(--gradient);opacity:0;transition:opacity .3s ease}.flashcard:hover::before{opacity:1}.flashcard span{font-size:.85rem;color:var(--text-muted);font-weight:400;text-transform:uppercase;letter-spacing:.05em}.flashcard i{font-style:normal;color:var(--primary-color)}.footer{width:100%;padding:60px 24px;border-top:1px solid var(--border-color);margin-top:auto;text-align:center}.footer-links{display:flex;justify-content:center;gap:32px;margin-bottom:24px;flex-wrap:wrap}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.95rem;transition:color .2s}.footer-links a:hover{color:var(--primary-color)}@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:640px){header h1{font-size:2rem}.converter-card{padding:24px}.btn{width:100%}.button-actions{flex-direction:column}.info-section{padding:24px}}