:root{--primary:#34d399;--primary-light:#6ee7b7;--bg:#f9f9fb;--card-bg:#fff;--text-primary:#1c1c1e;--text-secondary:#3a3a3c;--text-tertiary:#8e8e93;--border:#e5e5ea;--search-bg:#f2f2f7;--answer-bg:#f0fdf4;--tab-bg:#e5e5ea;--tab-active-bg:#34d399;--tab-active-text:#fff;--contact-bg:#fff}@media (prefers-color-scheme:dark){:root{--bg:#000;--card-bg:#1c1c1e;--text-primary:#f2f2f7;--text-secondary:#d1d1d6;--text-tertiary:#8e8e93;--border:#38383a;--search-bg:#2c2c2e;--answer-bg:#1a2e1a;--tab-bg:#2c2c2e;--tab-active-bg:#34d399;--tab-active-text:#000;--contact-bg:#1c1c1e}}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%;overscroll-behavior:none;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.support-container{max-width:100vw;min-height:100vh;padding-bottom:calc(72px + env(safe-area-inset-bottom));flex-direction:column;display:flex}.search-bar{z-index:10;background:var(--bg);align-items:center;gap:8px;padding:12px 16px;display:flex;position:sticky;top:0}.search-icon{width:20px;height:20px;color:var(--text-tertiary);flex-shrink:0}.search-input{background:var(--search-bg);color:var(--text-primary);border:none;border-radius:10px;outline:none;flex:1;padding:10px 12px;font-size:16px}.search-input::placeholder{color:var(--text-tertiary)}.search-clear{color:var(--text-tertiary);cursor:pointer;background:0 0;border:none;align-items:center;padding:4px;display:flex}.category-tabs{-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:8px;padding:4px 16px 12px;display:flex;overflow-x:auto}.category-tabs::-webkit-scrollbar{display:none}.category-tab{cursor:pointer;background:var(--tab-bg);color:var(--text-secondary);border:none;border-radius:20px;flex-shrink:0;padding:6px 16px;font-size:14px;font-weight:500;transition:all .2s}.category-tab.active{background:var(--tab-active-bg);color:var(--tab-active-text)}.faq-list{flex:1;padding:0 16px}.no-results{color:var(--text-tertiary);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:60px 20px;display:flex}.no-results p{font-size:15px}.faq-item{background:var(--card-bg);border-radius:12px;margin-bottom:8px;transition:box-shadow .2s;overflow:hidden}.faq-item.expanded{box-shadow:0 2px 8px #00000014}.faq-question{cursor:pointer;text-align:left;width:100%;color:var(--text-primary);background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;font-size:15px;font-weight:500;line-height:1.4;display:flex}.faq-q-text{flex:1}.faq-arrow{color:var(--text-tertiary);flex-shrink:0;transition:transform .25s}.faq-arrow.rotated{transform:rotate(180deg)}.faq-answer{padding:0 16px 14px;animation:.2s slideDown}.faq-answer p{color:var(--text-secondary);background:var(--answer-bg);border-radius:8px;padding:12px;font-size:14px;line-height:1.6}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.contact-bar{padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom));background:var(--contact-bg);border-top:1px solid var(--border);-webkit-backdrop-filter:blur(20px);justify-content:space-between;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.contact-info{color:var(--text-primary);align-items:center;gap:10px;display:flex}.contact-info svg{color:var(--primary);flex-shrink:0}.contact-title{font-size:15px;font-weight:600}.contact-desc{color:var(--text-tertiary);margin-top:2px;font-size:12px}.contact-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;transition:background .2s;display:flex}.contact-btn:active{background:var(--primary-light)}