.feature-detail { padding-bottom: 48px; }
.feature-detail [hidden] { display: none !important; }
.fd-breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; padding: 24px 0; font-size: .95rem; color: #64748b; }
.fd-breadcrumb a { color: #334155; }
.fd-hero { display: grid; grid-template-columns: 1.35fr 1fr; gap: 44px; align-items: center; padding: clamp(24px, 4vw, 52px); }
.fd-kicker { font-weight: 700; margin: 20px 0 10px; color: #805000; }
.fd-hero h1 { font-size: clamp(2rem, 3.8vw, 3.4rem); line-height: 1.12; font-weight: 800; letter-spacing: -.035em; margin-bottom: 22px; }
.fd-intro { font-size: 1.15rem; line-height: 1.75; color: #475569; }
.fd-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.fd-actions .btn { padding: 12px 20px; border-radius: 12px; font-weight: 700; }
.fd-audience { color: #64748b; margin: 22px 0 0; }
.fd-audience i { margin-right: 6px; }
.fd-overview { background: #fff4cf; border: 2px solid #0f172a; box-shadow: 8px 8px 0 #0f172a; border-radius: 24px; padding: 32px; transform: rotate(2deg); }
.fd-emblem { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; border: 2px solid #0f172a; border-radius: 18px; background: #ee9d01; color: #0f172a; font-size: 1.8rem; margin-bottom: 24px; }
.fd-overview h2 { font-weight: 800; font-size: 1.9rem; }
.fd-overview ul { list-style: none; padding: 0; margin: 24px 0; }
.fd-overview li { padding: 10px 0; border-bottom: 1px solid #dacda5; }
.fd-overview li i { color: #805000; margin-right: 6px; }
.fd-overview-label { font-size: .78rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.fd-section-nav { display: flex; flex-wrap: wrap; gap: 8px; padding: 22px 0; }
.fd-section-nav a { padding: 10px 18px; background: #fff; border: 1px solid #cbd5e1; border-radius: 30px; color: #334155; font-weight: 600; }
.fd-section-nav a:hover { background: #fff4cf; }
.fd-section { margin: 12px 0 28px; scroll-margin-top: 95px; }
.fd-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.fd-number { display: inline-flex; flex-shrink: 0; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 12px; background: #fff4cf; color: #805000; font-weight: 800; }
.fd-grid .fd-number { margin-bottom: 20px; }
.fd-grid h3 { font-size: 1.3rem; }
.fd-grid p { line-height: 1.8; }
.fd-explorer { display: grid; gap: 24px; }
.fd-explorer.is-interactive { grid-template-columns: 1fr 1.5fr; }
.fd-step-list { display: flex; flex-direction: column; gap: 12px; }
.fd-step { display: flex; align-items: center; gap: 14px; padding: 18px; border: 2px solid #e2e8f0; border-radius: 16px; background: white; text-align: left; color: #334155; font-weight: 700; }
.fd-step > i { margin-left: auto; }
.fd-step[aria-pressed="true"] { border-color: #0f172a; background: #fff4cf; box-shadow: 4px 4px 0 #0f172a; }
.fd-panel { background: #f8fafc; border: 1px solid #cbd5e1; padding: 28px; border-radius: 20px; margin-bottom: 14px; }
.fd-panel-top { display: flex; justify-content: space-between; gap: 12px; font-size: .8rem; color: #64748b; font-weight: 800; letter-spacing: .07em; }
.fd-track { display: flex; gap: 6px; margin: 18px 0 26px; }
.fd-track span { flex: 1; height: 5px; border-radius: 8px; background: #e2e8f0; }
.fd-track .is-filled { background: #ee9d01; }
.fd-panel h3 { font-weight: 800; }
.fd-panel p { color: #475569; line-height: 1.75; }
.fd-result { display: flex; align-items: center; gap: 12px; padding: 16px; background: #e1f3ea; border-radius: 12px; color: #18563c; font-weight: 600; }
.fd-explorer-controls { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 18px; margin-top: 10px; }
.fd-explorer-controls p { margin: 0; color: #64748b; }
.fd-faq { border-bottom: 1px solid #e2e8f0; padding: 18px 0; }
.fd-faq summary { cursor: pointer; font-weight: 700; font-size: 1.12rem; }
.fd-faq p { margin: 14px 0 0; color: #475569; line-height: 1.8; max-width: 850px; }
.fd-cta { padding: clamp(28px, 5vw, 52px); background: #0f172a; border-radius: 24px; margin: 28px 0 42px; color: #fff; }
.fd-cta h2 { max-width: 650px; font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 800; margin-top: 18px; }
.fd-cta p { color: #cbd5e1; }
.fd-related { display: flex; flex-wrap: wrap; gap: 12px; }
.fd-related a { display: flex; align-items: center; gap: 12px; padding: 18px; background: white; border: 1px solid #cbd5e1; border-radius: 14px; color: #0f172a; font-weight: 700; }
.fd-related a:hover { background: #fff4cf; }
.feature-detail a:focus-visible, .feature-detail button:focus-visible, .fd-faq summary:focus-visible { outline: 3px solid #805000; outline-offset: 4px; }
@media (max-width: 991px) { .fd-hero { grid-template-columns: 1fr; } .fd-overview { transform: none; } .fd-grid { grid-template-columns: 1fr; } }
@media (max-width: 575px) { .fd-explorer.is-interactive { grid-template-columns: 1fr; } .fd-panel { padding: 20px; } .fd-overview { padding: 24px; box-shadow: 4px 4px 0 #0f172a; } .fd-section-nav a { font-size: .9rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .feature-detail *, .feature-detail *::before, .feature-detail *::after { animation: none !important; transition: none !important; } }