/* Reset and Base Styles */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:100%;scroll-behavior:smooth}
body{font-family:ui-sans-serif,-apple-system,'Segoe UI',Roboto,Inter,'Helvetica Neue',Arial,sans-serif;line-height:1.6;color:#334155;background:#fff}
img{max-width:100%;height:auto;display:block}
a{color:#0ea5e9;text-decoration:none;transition:color 0.2s ease}
a:hover{color:#0284c7}
a:focus{outline:2px solid #0ea5e9;outline-offset:2px;border-radius:2px}

/* Skip Link */
.skip-link{position:absolute;top:-50px;left:20px;background:#1e293b;color:#fff;padding:8px 16px;border-radius:4px;z-index:1000;transition:top 0.2s ease}
.skip-link:focus{top:20px}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header & Navigation */
.header{background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);position:fixed;top:0;left:0;right:0;z-index:100;border-bottom:1px solid rgba(226,232,240,0.8)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo img{height:40px;width:auto}
.nav-menu{display:flex;list-style:none;gap:32px;margin:0}
.nav-link{font-weight:500;color:#64748b;padding:8px 0;border-bottom:2px solid transparent;transition:all 0.2s ease}
.nav-link:hover,.nav-link:focus{color:#0ea5e9;border-bottom-color:#0ea5e9}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#64748b;transition:all 0.2s ease}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border:none;border-radius:8px;font-weight:600;font-size:16px;cursor:pointer;transition:all 0.2s ease;text-decoration:none}
.btn-primary{background:#0ea5e9;color:#fff}
.btn-primary:hover{background:#0284c7;transform:translateY(-1px)}
.btn-secondary{background:transparent;color:#0ea5e9;border:2px solid #0ea5e9}
.btn-secondary:hover{background:#0ea5e9;color:#fff}
.btn-small{padding:8px 16px;font-size:14px}

/* Hero Section */
.hero{padding:120px 0 80px;background:linear-gradient(135deg,#f8fafc 0%,#e2e8f0 100%);overflow:hidden}
.hero-container{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero h1{font-size:48px;font-weight:700;line-height:1.2;color:#1e293b;margin-bottom:20px}
.hero p{font-size:20px;color:#64748b;margin-bottom:32px;line-height:1.5}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-image img{border-radius:16px;box-shadow:0 25px 50px -12px rgba(0,0,0,0.25)}

/* Methods Section */
.methods{padding:100px 0;background:#fff}
.methods h2{text-align:center;font-size:40px;font-weight:700;color:#1e293b;margin-bottom:16px}
.section-subtitle{text-align:center;font-size:20px;color:#64748b;margin-bottom:60px;max-width:600px;margin-left:auto;margin-right:auto}
.methods-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:60px}
.method-card{background:#fff;border-radius:20px;padding:40px;box-shadow:0 10px 25px -5px rgba(0,0,0,0.1);transition:all 0.3s ease;border:2px solid transparent}
.method-card:hover{transform:translateY(-8px);box-shadow:0 25px 50px -12px rgba(0,0,0,0.25)}
.method-card.snowball{border-color:#10b981}
.method-card.avalanche{border-color:#8b5cf6}
.method-header{text-align:center;margin-bottom:32px}
.method-icon{margin-bottom:20px;border-radius:12px;overflow:hidden}
.method-icon img{width:100%;height:200px;object-fit:cover}
.method-card h3{font-size:28px;font-weight:700;color:#1e293b;margin-bottom:16px}
.method-description{font-size:18px;color:#64748b;margin-bottom:32px;line-height:1.6}
.method-steps{margin-bottom:32px}
.method-steps h4{font-size:20px;font-weight:600;color:#1e293b;margin-bottom:16px}
.method-steps ol{margin-left:20px;color:#64748b}
.method-steps li{margin-bottom:8px;line-height:1.5}
.method-pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pros h5{color:#10b981;font-weight:600;margin-bottom:12px}
.cons h5{color:#f59e0b;font-weight:600;margin-bottom:12px}
.pros ul,.cons ul{list-style:none;margin:0}
.pros li,.cons li{padding:4px 0;color:#64748b;position:relative;padding-left:20px;font-size:14px}
.pros li::before{content:'✓';color:#10b981;font-weight:700;position:absolute;left:0;top:4px}
.cons li::before{content:'!';color:#f59e0b;font-weight:700;position:absolute;left:0;top:4px}

/* Calculator Section */
.calculator{padding:100px 0;background:#f8fafc}
.calculator h2{text-align:center;font-size:40px;font-weight:700;color:#1e293b;margin-bottom:16px}
.calculator-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-top:60px}
.calculator-info h3{font-size:32px;font-weight:700;color:#1e293b;margin-bottom:20px}
.calculator-info p{font-size:18px;color:#64748b;margin-bottom:32px;line-height:1.6}
.calculator-features{display:flex;flex-direction:column;gap:24px;margin-bottom:32px}
.calc-feature h4{color:#1e293b;font-weight:600;margin-bottom:8px}
.calc-feature p{color:#64748b;line-height:1.5}
.calculator-image img{border-radius:16px;box-shadow:0 25px 50px -12px rgba(0,0,0,0.25)}

/* Guides Section */
.guides{padding:100px 0;background:#fff}
.guides h2{text-align:center;font-size:40px;font-weight:700;color:#1e293b;margin-bottom:16px}
.guides-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px;margin-top:60px}
.guide-card{background:#fff;border-radius:16px;padding:0;box-shadow:0 4px 6px -1px rgba(0,0,0,0.1);transition:all 0.2s ease;border:1px solid #e2e8f0;overflow:hidden}
.guide-card:hover{transform:translateY(-4px);box-shadow:0 20px 25px -5px rgba(0,0,0,0.1)}
.guide-image{margin-bottom:24px}
.guide-image img{width:100%;height:200px;object-fit:cover}
.guide-card h3{font-size:22px;font-weight:700;color:#1e293b;margin:0 24px 12px;line-height:1.3}
.guide-card p{color:#64748b;margin:0 24px 20px;line-height:1.6}
.guide-link{color:#0ea5e9;font-weight:600;display:inline-flex;align-items:center;gap:8px;margin:0 24px 24px}
.guide-link:hover{color:#0284c7}

/* Testimonials */
.testimonials{padding:100px 0;background:#1e293b}
.testimonials h2{text-align:center;font-size:40px;font-weight:700;color:#fff;margin-bottom:60px}
.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}
.testimonial{background:rgba(255,255,255,0.05);backdrop-filter:blur(10px);border-radius:16px;padding:32px;border:1px solid rgba(255,255,255,0.1)}
.testimonial-content p{color:#e2e8f0;font-size:18px;line-height:1.6;margin-bottom:24px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:16px}
.testimonial-author img{width:60px;height:60px;border-radius:50%;object-fit:cover}
.testimonial-author h4{color:#fff;font-weight:600;margin-bottom:4px}
.testimonial-author p{color:#94a3b8;font-size:14px}

/* FAQ Section */
.faq{padding:100px 0;background:#f8fafc}
.faq h2{text-align:center;font-size:40px;font-weight:700;color:#1e293b;margin-bottom:60px}
.faq-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:32px}
.faq-item{background:#fff;border-radius:12px;padding:32px;border-left:4px solid #0ea5e9;box-shadow:0 2px 4px -1px rgba(0,0,0,0.1)}
.faq-item h3{font-size:20px;font-weight:700;color:#1e293b;margin-bottom:16px}
.faq-item p{color:#64748b;line-height:1.6}

/* Contact Section */
.contact{padding:100px 0;background:linear-gradient(135deg,#0ea5e9 0%,#0284c7 100%)}
.contact-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-info h2{font-size:40px;font-weight:700;color:#fff;margin-bottom:20px}
.contact-info p{font-size:20px;color:#e0f2fe;margin-bottom:40px;line-height:1.5}
.contact-features{display:flex;flex-direction:column;gap:24px}
.contact-feature h4{color:#fff;font-weight:700;margin-bottom:8px}
.contact-feature p{color:#e0f2fe;line-height:1.5}
.contact-form{background:#fff;border-radius:16px;padding:40px;box-shadow:0 25px 50px -12px rgba(0,0,0,0.25)}
.form-group{margin-bottom:24px}
.form-group label{display:block;font-weight:600;color:#374151;margin-bottom:8px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;border:2px solid #e5e7eb;border-radius:8px;font-size:16px;transition:border-color 0.2s ease}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#0ea5e9}
.form-note{font-size:14px;color:#6b7280;margin-top:16px;text-align:center}

/* Footer */
.footer{background:#1e293b;color:#e2e8f0;padding:60px 0 20px}
.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:60px;margin-bottom:40px}
.footer-brand img{height:40px;margin-bottom:16px}
.footer-brand p{color:#94a3b8;line-height:1.6}
.footer-section h4{color:#fff;font-weight:700;margin-bottom:16px}
.footer-section ul{list-style:none}
.footer-section li{margin-bottom:8px}
.footer-section a{color:#94a3b8;transition:color 0.2s ease}
.footer-section a:hover{color:#0ea5e9}
.footer-bottom{border-top:1px solid #334155;padding-top:20px;text-align:center;color:#94a3b8}

/* Cookie Notice */
.cookie-notice{position:fixed;bottom:-100px;left:0;right:0;background:#1e293b;color:#fff;padding:20px;z-index:1000;transition:bottom 0.3s ease}
.cookie-notice.show{bottom:0}
.cookie-content{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.cookie-content p{margin:0}
.cookie-content a{color:#0ea5e9}

/* Legal Pages */
.legal-page{padding:120px 0 80px;min-height:calc(100vh - 200px)}
.legal-page h1{font-size:40px;font-weight:700;color:#1e293b;margin-bottom:8px}
.legal-date{color:#6b7280;font-size:16px;margin-bottom:40px}
.legal-page section{margin-bottom:40px}
.legal-page h2{font-size:28px;font-weight:700;color:#1e293b;margin-bottom:16px}
.legal-page h3{font-size:22px;font-weight:600;color:#374151;margin-bottom:12px}
.legal-page p{color:#4b5563;line-height:1.6;margin-bottom:16px}
.legal-page ul{margin-left:20px;margin-bottom:16px}
.legal-page li{color:#4b5563;margin-bottom:8px}

/* Responsive Design */
@media (max-width: 1024px){
.hero-container,.calculator-content,.contact-content{grid-template-columns:1fr;text-align:center}
.hero-image{order:-1}
.methods-grid{grid-template-columns:1fr;gap:32px}
.method-pros-cons{grid-template-columns:1fr;gap:16px}
.footer-content{grid-template-columns:1fr 1fr;gap:40px}
}

@media (max-width: 768px){
.nav-menu{position:fixed;top:70px;left:-100%;width:100%;height:calc(100vh - 70px);background:#fff;flex-direction:column;justify-content:center;align-items:center;transition:left 0.3s ease;box-shadow:0 4px 6px -1px rgba(0,0,0,0.1)}
.nav-menu.active{left:0}
.nav-toggle{display:flex}
.hero h1{font-size:36px}
.hero p{font-size:18px}
.hero-cta{justify-content:center}
.methods h2,.calculator h2,.guides h2,.testimonials h2,.faq h2,.contact-info h2{font-size:32px}
.method-card{padding:24px}
.method-card h3{font-size:24px}
.guides-grid,.faq-grid{grid-template-columns:1fr;gap:24px}
.testimonials-grid{grid-template-columns:1fr}
.footer-content{grid-template-columns:1fr;gap:32px;text-align:center}
.cookie-content{flex-direction:column;text-align:center}
}

@media (max-width: 480px){
.hero{padding:100px 0 60px}
.hero h1{font-size:28px}
.hero p{font-size:16px}
.btn{padding:10px 20px;font-size:14px}
.hero-cta{gap:12px}
.hero-cta .btn{width:100%;justify-content:center}
.section-subtitle{font-size:18px}
.methods h2,.calculator h2,.guides h2,.testimonials h2,.faq h2,.contact-info h2{font-size:28px}
.contact-info p{font-size:18px}
.method-card{padding:20px}
.method-steps ol{margin-left:16px}
}

/* Performance Optimizations */
.hero-image img,.method-icon img,.calculator-image img,.guide-image img,.testimonial-author img{will-change:transform}
.method-card,.guide-card{will-change:transform}

/* Accessibility */
@media (prefers-reduced-motion: reduce){
*{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
}

/* Focus States */
.btn:focus,.nav-link:focus,.guide-link:focus{outline:2px solid #0ea5e9;outline-offset:2px;border-radius:4px}

/* Print Styles */
@media print{
.header,.footer,.cookie-notice{display:none}
.hero{padding:0;background:none}
body{color:#000;background:#fff}
}