:root{--bg: #F8F9FB;--surface: #FFFFFF;--fg: #1A1A2E;--muted: #6B7280;--accent: #2563EB;--accent-light: #DBEAFE;--accent-dark: #1D4ED8;--border: #E5E7EB;--radius: 12px;--radius-sm: 8px;--font-display: "Inter", system-ui, sans-serif;--font-body: "Inter", system-ui, sans-serif;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 30px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg);color:var(--fg);line-height:1.6;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer;border:none;background:none}input{font-family:inherit}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-inner{max-width:900px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:10px}.logo-badge{width:32px;height:32px;border-radius:8px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}.logo-text{font-weight:700;font-size:18px;letter-spacing:-.02em}.logo-sub{color:var(--muted);font-size:14px;font-weight:500}.contact-link{color:var(--accent);font-size:14px;font-weight:500;text-decoration:none;transition:color .2s}.contact-link:hover{color:var(--accent-dark)}.hero{background:var(--surface);padding:60px 24px 50px;border-bottom:1px solid var(--border)}.hero-inner{max-width:700px;margin:0 auto;text-align:center}.hero-title{font-family:var(--font-display);font-size:34px;font-weight:700;letter-spacing:-.03em;margin-bottom:12px;line-height:1.2}.hero-subtitle{font-size:17px;color:var(--muted);margin-bottom:32px}.search-wrapper{position:relative;display:flex;align-items:center;justify-content:center}.search-bar{display:flex;align-items:center;width:100%;max-width:560px;background:var(--bg);border:2px solid var(--border);border-radius:var(--radius);padding:0 16px;transition:border-color .2s,box-shadow .2s}.search-bar:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-light)}.search-icon{color:var(--muted);display:flex;flex-shrink:0}.search-input{flex:1;border:none;outline:none;background:transparent;padding:14px 12px;font-size:16px;color:var(--fg)}.search-input::placeholder{color:var(--muted)}.search-clear{color:var(--muted);font-size:16px;padding:4px 8px;border-radius:6px;transition:background .2s,color .2s}.search-clear:hover{background:var(--border);color:var(--fg)}.search-hint{position:absolute;right:-44px;top:50%;transform:translateY(-50%);background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:4px 10px;font-size:13px;color:var(--muted);font-family:var(--font-body)}.main{flex:1;max-width:800px;margin:0 auto;width:100%;padding:40px 24px 60px}.category-pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}.pill{padding:8px 16px;border-radius:100px;font-size:14px;font-weight:500;background:var(--surface);border:1px solid var(--border);color:var(--muted);transition:all .2s;white-space:nowrap}.pill:hover{border-color:var(--accent);color:var(--accent)}.pill-active{background:var(--accent);border-color:var(--accent);color:#fff}.pill-active:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff}.results-count{font-size:14px;color:var(--muted);margin-bottom:20px}.category-section{margin-bottom:36px}.category-header{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding:0 4px}.category-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);background:var(--accent-light);color:var(--accent);flex-shrink:0}.category-title{font-size:18px;font-weight:600;letter-spacing:-.01em}.category-count{font-size:13px;color:var(--muted);background:var(--bg);border:1px solid var(--border);border-radius:100px;padding:2px 10px;font-weight:500}.accordion{display:flex;flex-direction:column;gap:8px}.accordion-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow .2s,border-color .2s}.accordion-item:hover{box-shadow:var(--shadow-sm)}.accordion-item.open{border-color:var(--accent);box-shadow:var(--shadow-md)}.accordion-header{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;text-align:left;color:var(--fg);font-size:16px;font-weight:500;transition:background .2s}.accordion-header:hover{background:var(--bg)}.accordion-question{flex:1;line-height:1.5}.accordion-body{overflow:hidden;transition:max-height .3s ease,opacity .3s ease}.accordion-content{padding:0 20px 20px;color:var(--muted);font-size:15px;line-height:1.7}.faq-highlight{background:var(--accent-light);color:var(--accent-dark);border-radius:3px;padding:0 2px}.empty-state{text-align:center;padding:60px 20px}.empty-icon{font-size:48px;margin-bottom:16px}.empty-state h3{font-size:20px;font-weight:600;margin-bottom:8px}.empty-state p{color:var(--muted);font-size:15px}.link-btn{color:var(--accent);font-weight:500;text-decoration:underline;cursor:pointer}.footer{background:var(--surface);border-top:1px solid var(--border);padding:24px}.footer-inner{max-width:900px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px}.footer-left{display:flex;align-items:center;gap:10px}.footer-logo{font-weight:700;font-size:16px}.footer-text{color:var(--muted);font-size:14px}.footer-right{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}.footer-right a{color:var(--accent);font-weight:500;text-decoration:none}.footer-right a:hover{text-decoration:underline}@media(max-width:640px){.hero{padding:40px 20px 36px}.hero-title{font-size:26px}.hero-subtitle{font-size:15px;margin-bottom:24px}.search-hint{display:none}.main{padding:28px 16px 48px}.header-inner{padding:0 16px}.logo-sub{display:none}.contact-link{font-size:13px}.accordion-header{padding:16px;font-size:15px}.accordion-content{padding:0 16px 16px;font-size:14px}.footer-inner{flex-direction:column;text-align:center;gap:8px}.category-pills{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:4px}}