:root{--bg:#ffffff;--bg-alt:#fbfbfd;--text:#1d1d1f;--muted:#86868b;--accent:#0071e3;--accent-hover:#0077ED;--card-bg:#f5f5f7;--border:#d2d2d7;--shadow:0 10px 30px rgba(0,0,0,0.04);--radius-md:24px;}*{box-sizing:border-box;margin:0;padding:0;}html{width:100%;}body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,sans-serif;background:var(--bg-alt);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;margin:0;padding:0;overflow-x:hidden;}main{display:block;overflow-x:hidden;}@keyframes slideUpFade{0%{opacity:0;transform:translateY(30px);}100%{opacity:1;transform:translateY(0);}}.fade-in-load{animation:slideUpFade 0.8s cubic-bezier(0.16,1,0.3,1) forwards;}.delay-load-1{opacity:0;animation-delay:0.15s;}.delay-load-2{opacity:0;animation-delay:0.3s;}header{display:flex;justify-content:space-between;align-items:center;padding:16px 40px;background:rgba(255,255,255,0.85);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;flex-wrap:wrap;}.brand{display:flex;align-items:center;}.brand a{display:block;line-height:0;}.brand img{width:90px;height:90px;object-fit:contain;transition:transform 0.3s ease;}.brand img:hover{transform:scale(1.05);}nav{display:flex;gap:32px;align-items:center;}nav a{text-decoration:none;color:var(--text);font-size:14px;font-weight:500;transition:color 0.3s;}nav a:hover,nav a.active{color:var(--accent);}.btn-nav{background:var(--text);color:#fff;padding:10px 20px;border-radius:980px;font-weight:500;text-decoration:none;transition:0.3s;}.btn-nav:hover{background:#000;transform:scale(1.02);}.btn-nav-outline{border:1px solid var(--border);color:var(--text);padding:10px 20px;border-radius:980px;font-weight:500;text-decoration:none;transition:0.3s;}.btn-nav-outline:hover{border-color:var(--text);}.text-gradient{background:linear-gradient(135deg,#1d1d1f 0%,#434345 100%);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;}.container{max-width:800px;margin:80px auto;padding:0 24px;min-height:70vh;}.page-title{text-align:center;margin-bottom:60px;}.page-title h1{font-size:48px;letter-spacing:-0.03em;margin-bottom:16px;line-height:1.1;font-weight:700;}.page-title p{font-size:20px;color:var(--muted);line-height:1.5;}.faq-list{display:flex;flex-direction:column;gap:16px;}details{background:#ffffff;border-radius:20px;border:1px solid var(--border);overflow:hidden;transition:all 0.3s ease;}details:hover{border-color:rgba(0,113,227,0.3);box-shadow:var(--shadow);}summary{padding:24px;font-size:18px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;outline:none;color:var(--text);letter-spacing:-0.01em;user-select:none;}summary::-webkit-details-marker{display:none;}summary::after{content:'';width:24px;height:24px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230071e3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3Cline x1='12' y1='5' x2='12' y2='19'%3e%3c/Line%3e%3Cline x1='5' y1='12' x2='19' y2='12'%3e%3c/Line%3e%3c/svg%3e");background-size:contain;background-repeat:no-repeat;transition:transform 0.3s cubic-bezier(0.16,1,0.3,1);flex-shrink:0;}details[open] summary::after{transform:rotate(45deg);}.faq-content{padding:0 24px 24px;color:var(--text);font-size:16px;line-height:1.6;border-top:1px solid transparent;}details[open] summary ~ *{animation:sweep .4s ease-in-out;}@keyframes sweep{0%{opacity:0;transform:translateY(-10px);}100%{opacity:1;transform:translateY(0);}}.contact-box{text-align:center;margin-top:80px;padding:48px;background:var(--card-bg);border-radius:var(--radius-md);border:1px solid var(--border);}.contact-box h3{font-size:24px;letter-spacing:-0.02em;margin-bottom:12px;}.contact-box p{font-size:16px;color:var(--muted);margin-bottom:24px;}.btn-contact{background:var(--text);color:#fff;padding:16px 32px;border-radius:980px;text-decoration:none;font-weight:600;display:inline-block;transition:all 0.3s ease;}.btn-contact:hover{background:#000;transform:scale(1.02);}footer{text-align:center;padding:40px 20px;color:var(--muted);border-top:1px solid var(--border);font-size:14px;background:var(--bg);}@media (max-width:768px){header{flex-direction:column;padding:12px 16px;gap:12px;}.brand img{width:70px;height:70px;}nav{justify-content:center;width:100%;flex-wrap:wrap;gap:12px;}nav a{font-size:13px;}#auth-menu{width:100%;justify-content:center;margin-top:5px;flex-direction:row;}.container{margin:40px auto;}.page-title h1{font-size:36px;}.page-title p{font-size:18px;}summary{padding:20px;font-size:16px;}.faq-content{padding:0 20px 20px;font-size:15px;}.contact-box{padding:32px 20px;}.contact-box h3{font-size:22px;}}