@import"https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap";:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-card: #16161f;--accent-primary: #e85d04;--accent-secondary: #ff9e00;--accent-glow: rgba(232, 93, 4, .4);--text-primary: #fafafa;--text-secondary: #9ca3af;--text-muted: #6b7280;--border-color: rgba(255, 255, 255, .06);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Space Grotesk,-apple-system,sans-serif;background:var(--bg-primary);min-height:100vh;color:var(--text-primary);line-height:1.6}.promo-banner{background:linear-gradient(90deg,var(--bg-secondary) 0%,var(--bg-card) 50%,var(--bg-secondary) 100%);border-bottom:1px solid var(--border-color);padding:12px 24px;display:flex;align-items:center;justify-content:center;gap:16px;position:relative;overflow:hidden}.promo-banner:before{content:"";position:absolute;top:0;left:-100%;width:200%;height:100%;background:linear-gradient(90deg,transparent,rgba(232,93,4,.03),rgba(255,158,0,.06),rgba(232,93,4,.03),transparent);animation:bannerShine 8s ease-in-out infinite}@keyframes bannerShine{0%,to{transform:translate(0)}50%{transform:translate(50%)}}.promo-icon{display:flex;align-items:center;gap:8px;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.promo-spark{width:8px;height:8px;background:var(--accent-primary);border-radius:50%;box-shadow:0 0 12px var(--accent-glow)}.promo-text{font-size:14px;color:var(--text-secondary);z-index:1}.promo-link{color:var(--accent-primary);font-weight:600;text-decoration:none;padding:6px 14px;border:1px solid var(--accent-primary);border-radius:100px;transition:all .3s ease;z-index:1;font-size:13px}.promo-link:hover{background:var(--accent-primary);color:var(--text-primary);box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.container{max-width:1100px;margin:0 auto;padding:48px 24px}header{text-align:center;margin-bottom:56px}h1{font-size:2.8rem;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.02em}h1 span{color:var(--accent-primary)}.subtitle{color:var(--text-muted);font-size:1.1rem;font-weight:400}.mobile-menu-btn{display:none;width:100%;padding:16px 20px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:inherit;font-size:16px;font-weight:600;cursor:pointer;align-items:center;justify-content:space-between;margin-bottom:16px;transition:all .2s}.mobile-menu-btn:hover{border-color:var(--accent-primary)}.mobile-menu-btn svg{width:20px;height:20px;transition:transform .3s ease}.mobile-menu-btn svg.rotate{transform:rotate(180deg)}.menu-overlay{display:none}.main-content{display:grid;grid-template-columns:260px 1fr;gap:32px;align-items:start;position:relative}.ratio-list{background:var(--bg-card);border-radius:var(--radius-lg);padding:20px;border:1px solid var(--border-color);position:sticky;top:24px}.ratio-list h2{font-size:11px;color:var(--text-muted);margin-bottom:16px;text-transform:uppercase;letter-spacing:1.5px;font-weight:600}.ratio-item{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;margin-bottom:6px;background:transparent;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:1px solid transparent}.ratio-item:hover{background:#ffffff08}.ratio-item.active{background:#e85d0414;border-color:var(--accent-primary)}.ratio-item.active .ratio-label{color:var(--accent-primary)}.ratio-label{font-weight:600;font-size:15px;color:var(--text-primary);transition:color .2s}.ratio-mini{width:36px;height:28px;display:flex;align-items:center;justify-content:center}.ratio-mini-box{background:var(--text-muted);border-radius:2px;transition:all .2s ease}.ratio-item.active .ratio-mini-box{background:var(--accent-primary)}.preview-panel{display:flex;flex-direction:column}.preview-container{background:var(--bg-card);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border-color)}.preview-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}.preview-title{font-size:2.2rem;font-weight:700;color:var(--accent-primary)}.preview-dimensions{font-size:13px;color:var(--text-muted);background:var(--bg-secondary);padding:8px 16px;border-radius:100px;font-weight:500}.preview-box-wrapper{display:flex;align-items:center;justify-content:center;min-height:380px;background:var(--bg-secondary);border-radius:var(--radius-md);position:relative}.preview-box{background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 100%);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:all .4s cubic-bezier(.4,0,.2,1);position:relative;box-shadow:0 20px 50px #e85d0440,0 0 0 1px #ffffff1a inset}.preview-ratio-text{font-size:2rem;font-weight:700;color:#fffffff2}.ratio-info{margin-top:24px;padding:24px;background:var(--bg-secondary);border-radius:var(--radius-md)}.ratio-info h3{font-size:11px;color:var(--text-muted);margin-bottom:10px;text-transform:uppercase;letter-spacing:1.5px;font-weight:600}.ratio-info p{color:var(--text-secondary);font-size:15px;margin-bottom:16px}.usage-tags{display:flex;flex-wrap:wrap;gap:8px}.usage-tag{background:var(--bg-card);padding:6px 12px;border-radius:100px;font-size:12px;color:var(--text-muted);font-weight:500;border:1px solid var(--border-color)}.footer-cta{margin-top:48px;text-align:center;padding:40px;background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);position:relative;overflow:hidden}.footer-cta:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:200px;height:1px;background:linear-gradient(90deg,transparent,var(--accent-primary),transparent)}.footer-cta h3{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.footer-cta p{color:var(--text-muted);font-size:14px;margin-bottom:20px}.cta-button{display:inline-flex;align-items:center;gap:8px;background:var(--accent-primary);color:#fff;font-weight:600;font-size:14px;padding:14px 28px;border-radius:100px;text-decoration:none;transition:all .3s ease}.cta-button:hover{background:var(--accent-secondary);transform:translateY(-2px);box-shadow:0 10px 30px var(--accent-glow)}.cta-button svg{width:16px;height:16px}@media(max-width:800px){.container{padding:24px 16px}header{margin-bottom:32px}h1{font-size:2rem}.main-content{display:block}.mobile-menu-btn{display:flex}.ratio-list{position:fixed;top:0;left:0;right:0;bottom:0;z-index:100;border-radius:0;padding:24px;overflow-y:auto;transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.ratio-list.open{transform:translateY(0);opacity:1;visibility:visible}.ratio-list h2{margin-bottom:24px;display:flex;justify-content:space-between;align-items:center}.ratio-item{padding:16px;margin-bottom:8px}.ratio-label{font-size:18px}.menu-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;z-index:99}.preview-container{padding:20px}.preview-header{flex-direction:column;gap:12px;align-items:flex-start;margin-bottom:24px}.preview-title{font-size:1.8rem}.preview-box-wrapper{min-height:280px}.preview-ratio-text{font-size:1.5rem}.footer-cta{margin-top:32px;padding:28px 20px}.footer-cta h3{font-size:18px}.promo-banner{flex-direction:column;gap:10px;text-align:center;padding:12px 16px}.promo-text{font-size:13px}}@media(max-width:400px){h1{font-size:1.6rem}.preview-box-wrapper{min-height:220px}.cta-button{padding:12px 20px;font-size:13px}}