.guide-sidebar nav{flex:1 1 auto;min-height:0;overflow-y:auto;padding-right:5px;scrollbar-width:thin;scrollbar-color:#405066 transparent}.guide-sidebar nav::-webkit-scrollbar{width:6px}.guide-sidebar nav::-webkit-scrollbar-thumb{background:#405066;border-radius:999px}.guide-nav-category[hidden],.guide-nav-item[hidden]{display:none}.guide-search input{width:100%;min-height:40px;border:1px solid #334155;border-radius:10px;background:#1b2638;color:#f8fafc;padding:0 12px;outline:none}.guide-search input::placeholder{color:#94a3b8}.guide-search input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px rgba(37,99,235,.18)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#f8fafc;background:#0f172a}*{box-sizing:border-box}body{margin:0;background:#0f172a}.guide-app{display:grid;grid-template-columns:264px minmax(0,1fr);height:100vh;overflow:hidden}.guide-sidebar{height:100vh;min-height:0;background:#111827;border-right:1px solid #2b3a4f;padding:22px 12px;display:flex;flex-direction:column;gap:14px;overflow:hidden}.guide-brand{color:#fff;text-decoration:none;font-size:24px;font-weight:800;padding:8px 12px;display:flex;align-items:center;gap:10px}.guide-brand img{width:30px;height:30px;object-fit:contain;border-radius:8px}.guide-rail-title,.guide-category{font-size:11px;letter-spacing:.08em;font-weight:700;color:#94a3b8;padding:0 12px;margin-top:12px}.guide-category{color:#60a5fa}.guide-nav-item{display:block;color:#dbe3ee;text-decoration:none;padding:9px 12px;border-radius:9px;font-size:14px;margin:2px 0}.guide-nav-item:hover,.guide-nav-item.active{background:#263b57;color:#fff}.guide-nav-item.active{border-left:3px solid #3b82f6}.guide-rail-back{margin-top:auto;color:#dbe3ee;text-decoration:none;padding:12px}.guide-main{height:100vh;min-height:0;overflow-y:auto;padding:34px 42px 80px;max-width:1500px;width:100%;margin:0 auto}.guide-topbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #2b3a4f;padding-bottom:24px}.guide-eyebrow{color:#60a5fa;font-size:12px;font-weight:800;letter-spacing:.09em}.guide-topbar h1{font-size:clamp(30px,4vw,50px);margin:8px 0 0}.guide-open,.guide-video{background:#2563eb;color:#fff;text-decoration:none;font-weight:700;border-radius:10px;padding:12px 17px}.guide-hero{margin:25px 0;display:flex;gap:30px;align-items:center;padding:30px;border:1px solid #2b3a4f;border-radius:18px;background:linear-gradient(120deg,#17243a,#111827)}.guide-hero img{width:310px;height:205px;object-fit:cover;border-radius:13px;order:2}.guide-hero h2{font-size:27px;margin:0 0 10px}.guide-hero p,.guide-card p,.guide-card li{color:#cbd5e1;line-height:1.75}.guide-content{display:grid;grid-template-columns:minmax(0,2fr) minmax(250px,1fr);gap:22px}.guide-card{background:#1b2638;border:1px solid #2b3a4f;border-radius:16px;padding:27px;margin-bottom:20px}.guide-card>span{color:#60a5fa;font-size:12px;font-weight:800}.guide-card h2{margin:8px 0 14px;font-size:26px}.guide-card h3{margin-top:0}.guide-card-accent{border-color:#315c9b;background:linear-gradient(135deg,#1b2b45,#1b2638)}.guide-video{display:block;text-align:center}@media(max-width:850px){.guide-app{grid-template-columns:1fr}.guide-sidebar{display:none}.guide-main{padding:24px 16px}.guide-content{grid-template-columns:1fr}.guide-hero{display:block}.guide-hero img{width:100%;margin-bottom:20px}.guide-topbar{gap:16px}.guide-open{white-space:nowrap}}