:root{--bg-color:#0f0f11;--nav-bg:#0f0f11;--text-primary:#fff;--text-secondary:#9ca3af;--btn-primary-bg:#fff;--btn-primary-text:#000;--btn-secondary-bg:transparent;--btn-secondary-border:#ffffff1a;--btn-secondary-text:#fff;--accent:#fff;--card-bg:#161618}html{scroll-behavior:smooth}body{background-color:var(--bg-color);color:var(--text-primary);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}.landing-container{flex-direction:column;min-height:100vh;display:flex}.top-nav{background-color:var(--nav-bg);z-index:100;justify-content:space-between;align-items:center;padding:20px 48px;transition:box-shadow .3s;display:flex;position:fixed;top:0;left:0;right:0}.top-nav.scrolled{box-shadow:0 4px 20px #00000080}.nav-left{align-items:center;gap:48px;display:flex}.nav-brand{align-items:center;gap:8px;font-size:1.25rem;font-weight:700;display:flex}.nav-links{gap:24px;display:flex}.nav-link{color:var(--text-secondary);font-size:.95rem;font-weight:500;text-decoration:none;transition:color .2s}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.nav-right{align-items:center;gap:16px;display:flex}.predict-btn{background-color:var(--btn-primary-bg);color:var(--btn-primary-text);border-radius:8px;padding:10px 20px;font-size:.9rem;font-weight:600;text-decoration:none;transition:opacity .2s}.predict-btn:hover{opacity:.9}.theme-toggle{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff3;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;transition:background .2s;display:flex}.theme-toggle:hover{background:#ffffff1a}.hero-section{justify-content:space-between;align-items:center;gap:40px;min-height:calc(100vh - 80px);margin-top:80px;padding:60px 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img{border-radius:20px;width:100%;max-width:500px;box-shadow:0 20px 40px #00000080}.blog-section{background-color:#121214;padding:80px 48px}.blog-header{text-align:center;margin-bottom:48px}.blog-grid{grid-template-columns:repeat(3,1fr);gap:32px;max-width:1200px;margin:0 auto;display:grid}.blog-card{background:var(--card-bg);border:1px solid #ffffff0d;border-radius:16px;transition:transform .3s;overflow:hidden}.blog-card:hover{transform:translateY(-8px)}.blog-card img{object-fit:cover;width:100%;height:200px}.blog-card-content{padding:24px}.blog-date{color:#10b981;margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.blog-card h3{margin:0 0 12px;font-size:1.25rem}.blog-card p{color:var(--text-secondary);margin:0;font-size:.95rem;line-height:1.5}.contact-section{flex-direction:column;align-items:center;padding:80px 48px;display:flex}.contact-form{background:var(--card-bg);border:1px solid 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p{color:var(--text-secondary);margin:0;line-height:1.6}.footer-links{gap:80px;display:flex}.footer-col{flex-direction:column;gap:16px;display:flex}.footer-col h4{margin:0;font-size:1.1rem}.footer-col a{color:var(--text-secondary);text-decoration:none;transition:color .2s}.footer-col a:hover{color:#fff}.footer-bottom{text-align:center;color:var(--text-secondary);border-top:1px solid #ffffff0d;padding-top:24px;font-size:.9rem}@media (max-width:1024px){.hero-section{text-align:center;flex-direction:column;padding-top:120px}.hero-content{margin-bottom:48px}.hero-actions{justify-content:center}.hero-image{width:100%;height:auto}.impact-grid{grid-template-columns:repeat(2,1fr)}.about-section{text-align:center;flex-direction:column}.blog-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.nav-left{gap:16px}.nav-links{display:none}.impact-grid,.blog-grid{grid-template-columns:1fr}.footer-links{flex-direction:column;gap:32px}}