:root{--primary-color: #4f9aab;--primary-hover: #3a6f78;--accent-color: #f78650;--text-color: #1d2231;--text-secondary: #666666;--bg-color: #f5f7fb;--card-bg: #ffffff;--border-color: #d8deeb;--sidebar-width: 280px;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--card-bg);border-right:1px solid var(--border-color);padding:2rem;position:fixed;height:100vh;display:flex;flex-direction:column;z-index:100}.main-content{margin-left:var(--sidebar-width);flex:1;padding:3rem 4rem;max-width:1600px}.brand{margin-bottom:3rem;display:flex;align-items:center;gap:1rem}.brand__logo{width:40px;height:40px;background:var(--primary-color);color:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem}.brand__name{font-size:1.1rem;font-weight:700;color:var(--text-color);letter-spacing:-.02em}.nav-links{display:flex;flex-direction:column;gap:.5rem}.nav-link{display:block;padding:.75rem 1rem;border-radius:6px;color:var(--text-secondary);text-decoration:none;font-weight:500;transition:all .2s}.nav-link:hover{background:#f0f4f8;color:var(--primary-color)}.nav-link.active{background:#4f9aab1a;color:var(--primary-color);font-weight:600}.lang-switch{margin-top:auto;padding-top:1.5rem;border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;gap:1rem;font-size:.9rem}.lang-btn{background:none;border:none;cursor:pointer;color:var(--text-secondary);font-weight:500;padding:.2rem}.lang-btn:hover{color:var(--primary-color)}.lang-sep{color:#ccc}.header{margin-bottom:3rem}.page-title{font-size:2rem;font-weight:700;color:var(--text-color);margin-bottom:.5rem}.page-subtitle{color:var(--text-secondary);font-size:1.1rem}.content-area{display:flex;flex-direction:column;gap:2rem}.section-card{background:var(--card-bg);border-radius:12px;padding:2.5rem;box-shadow:0 4px 20px #00000008;border:1px solid rgba(0,0,0,.05);transition:transform .2s}.section-card:hover{transform:translateY(-2px);box-shadow:0 8px 30px 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#eee;padding-top:1.5rem}.code-toggle{display:inline-flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-size:.85rem;cursor:pointer;transition:color .2s;border:none;background:none;padding:0}.code-toggle:hover{color:var(--primary-color)}.code-panel{margin-top:1rem;background:#282c34;border-radius:8px;overflow:hidden;font-family:Fira Code,monospace;font-size:.85rem}.code-tabs{display:flex;background:#21252b;border-bottom:1px solid #181A1F}.code-tab{padding:.75rem 1rem;color:#abb2bf;cursor:pointer;border-right:1px solid #181A1F;font-size:.8rem}.code-tab:hover{background:#2c313a;color:#fff}.code-tab.active{background:#282c34;color:var(--primary-color);font-weight:500;border-bottom:2px solid var(--primary-color)}.code-content{padding:1rem}.code-content pre{margin:0}.toast-container{position:fixed;bottom:2rem;right:2rem;display:flex;flex-direction:column;gap:.75rem;z-index:9999}.toast{background:#fff;padding:1rem 1.25rem;border-radius:8px;box-shadow:0 10px 30px #0000001a;display:flex;align-items:center;gap:.75rem;animation:slideIn .3s cubic-bezier(.16,1,.3,1);border-left:4px solid var(--primary-color);font-size:.9rem;font-weight:500;min-width:320px}.toast--error{border-left-color:#d32f2f}.toast--success{border-left-color:#388e3c}.hidden{display:none!important}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.footer{margin-top:4rem;border-top:1px solid var(--border-color);padding-top:2rem;color:var(--text-secondary);font-size:.85rem}.guide-layout{display:grid;grid-template-columns:1fr 1fr;gap:3rem}.guide-config h3,.guide-preview h3{font-size:1rem;font-weight:600;margin-bottom:1.5rem;color:var(--text-color)}.config-option{margin-bottom:1.5rem}.checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-weight:500}.checkbox-label input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary-color)}.config-desc{color:var(--text-secondary);font-size:.85rem;margin-top:.25rem;margin-left:2rem}.sdk-status{padding:.5rem 1rem;border-radius:6px;font-size:.85rem;font-weight:600}.sdk-status--ready{background:#e8f5e9;color:#2e7d32}.sdk-status--error{background:#ffebee;color:#c62828}.verification-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:1.5rem}.verification-item h4{font-size:.95rem;margin-bottom:.5rem}.verification-item p{color:var(--text-secondary);font-size:.85rem;margin-bottom:1rem}.urls-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem;margin-top:1.5rem}.url-item label{display:block;font-size:.8rem;color:var(--text-secondary);margin-bottom:.25rem}.url-item code{display:block;background:#f5f5f5;padding:.5rem 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p{margin-bottom:1rem;color:var(--text-secondary)}.sidebar-widget{background:#fff;border-radius:8px}.popover-demo{display:flex;align-items:center;justify-content:center;min-height:200px;position:relative}.hero-placeholder,.footer-placeholder{width:100%}.button--secondary{background:#f5f5f5;color:var(--text-color);border:1px solid #ddd}.button--secondary:hover{background:#eee}.button:disabled{opacity:.5;cursor:not-allowed}.form-layout{display:grid;grid-template-columns:1fr 250px;gap:2rem;align-items:start}.demo-form{background:#fff;padding:2rem;border-radius:12px;box-shadow:0 2px 8px #0000000d}.demo-form h4{font-size:1.1rem;margin-bottom:1.5rem;color:var(--text-color)}.form-group{margin-bottom:1.25rem}.form-group label{display:block;font-size:.85rem;font-weight:500;margin-bottom:.5rem;color:var(--text-color)}.form-group input,.form-group select{width:100%;padding:.75rem 1rem;border:1px solid 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rgba(79,70,229,.15)}.popup-demo-compact{display:flex;justify-content:center;align-items:center;min-height:80px;padding:1rem}.search-container{display:flex;gap:1rem;align-items:center;max-width:600px}.search-input-wrapper{flex:1;position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:1rem;font-size:1.1rem;opacity:.5}.search-input{width:100%;padding:.75rem 1rem .75rem 3rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;font-family:var(--font-family);transition:border-color .2s,box-shadow .2s}.search-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px 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.2s}.qty-btn:hover{background:var(--primary-color);color:#fff}#quantity-display{min-width:2rem;text-align:center;font-weight:600;font-size:1.1rem}.cart-container{background:#fff;padding:1.5rem;border-radius:12px;max-width:400px}.cart-items{margin-bottom:1rem}.cart-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;border-bottom:1px solid #eee}.cart-item:last-child{border-bottom:none}.cart-item-name{flex:1;font-weight:500}.cart-item-qty{color:var(--text-secondary);margin:0 1rem}.cart-item-price{font-weight:600}.cart-total{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;border-top:2px solid #eee;margin-bottom:1rem;font-weight:600}.cart-total-price{font-size:1.25rem;color:var(--primary-color)}.checkbox-group{margin-bottom:1.5rem}.checkbox-group .checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-weight:400}.checkbox-group 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