.imp{--imp-bg:var(--color-bg-base,#0a0c10);--imp-surface:var(--color-bg-card,#151b24);--imp-text:var(--color-text-primary,#e6ebf0);--imp-text-sec:var(--color-text-secondary,#768694);--imp-text-muted:var(--color-text-muted,#516070);--imp-accent:var(--color-accent,#189ba7);--imp-accent-hover:var(--color-accent-hover,#157a84);--imp-border:var(--color-border-default,#1e2630);--imp-glass:var(--glass-bg,rgba(12,16,21,0.4));--imp-glass-border:var(--glass-border,rgba(255,255,255,0.12));--imp-blur:var(--glass-blur,32px);--imp-radius:16px;position:relative;z-index:1;max-width:820px;margin:0 auto;padding:80px 24px 64px;color:var(--imp-text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}.imp-header{text-align:center;margin-bottom:32px}.imp-header h1{font-size:clamp(1.75rem,5vw,2.5rem);font-weight:700;letter-spacing:-.02em;color:var(--imp-text);margin:0 0 8px}.imp-header .imp-subtitle{font-size:.95rem;color:var(--imp-text-sec)}.imp-header .imp-accent-line{display:block;width:48px;height:3px;margin:20px auto 0;background:var(--imp-accent);border-radius:2px}.imp-search-wrap{position:sticky;top:0;z-index:50;margin-bottom:24px;padding:12px 0;background:linear-gradient(to bottom,var(--color-bg-base,#0a0c10) 60%,transparent 100%)}.imp-search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--imp-text-muted);pointer-events:none}.imp-search-input{width:100%;padding:14px 44px;font-size:14px;color:var(--imp-text);background:var(--imp-glass);backdrop-filter:blur(var(--imp-blur));-webkit-backdrop-filter:blur(var(--imp-blur));border:1px solid var(--imp-glass-border);border-radius:var(--imp-radius);outline:none;font-family:inherit;transition:border-color .2s ease}.imp-search-input::-moz-placeholder{color:var(--imp-text-muted)}.imp-search-input::placeholder{color:var(--imp-text-muted)}.imp-search-input:focus{border-color:rgba(24,155,167,.4)}.imp-search-clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--imp-text-muted);font-size:20px;cursor:pointer;padding:4px 8px;line-height:1;transition:color .15s ease}.imp-search-clear:hover{color:var(--imp-text)}.imp-search-status{font-size:13px;color:var(--imp-text-muted);margin:-12px 0 24px 4px}.imp-quicknav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:40px}.imp-quicknav-chip{display:inline-block;padding:7px 14px;font-size:12.5px;font-weight:500;color:var(--imp-text-sec);background:var(--imp-glass);backdrop-filter:blur(var(--imp-blur));-webkit-backdrop-filter:blur(var(--imp-blur));border:1px solid var(--imp-glass-border);border-radius:999px;text-decoration:none;transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease;white-space:nowrap}.imp-quicknav-chip:hover{border-color:rgba(24,155,167,.4);color:var(--imp-accent);background:rgba(24,155,167,.08);transform:translateY(-1px);box-shadow:0 2px 8px rgba(24,155,167,.1)}.imp-faq-section{margin-bottom:40px;scroll-margin-top:100px}.imp-faq-section h2{font-size:18px;font-weight:600;color:var(--imp-accent);margin:0 0 8px;letter-spacing:-.01em}.imp-category-intro{font-size:13.5px;color:var(--imp-text-muted);line-height:1.65;margin:0 0 20px}.imp-faq-item{background:var(--imp-glass);backdrop-filter:blur(var(--imp-blur));-webkit-backdrop-filter:blur(var(--imp-blur));border:1px solid var(--imp-glass-border);border-radius:var(--imp-radius);margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,background .25s ease,box-shadow .25s ease,transform .2s ease}.imp-faq-item:hover{border-color:rgba(24,155,167,.4);background:var(--imp-surface-hover,rgba(24,155,167,.06));box-shadow:0 4px 20px rgba(24,155,167,.1),0 0 0 1px rgba(24,155,167,.08);transform:translateY(-1px)}.imp-faq-item[open]{border-color:rgba(24,155,167,.35);background:var(--imp-surface-open,rgba(24,155,167,.04));box-shadow:0 2px 12px rgba(24,155,167,.08)}.imp-faq-item summary{padding:18px 24px;font-size:15px;font-weight:600;color:var(--imp-text);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:color .15s ease;-webkit-user-select:none;-moz-user-select:none;user-select:none}.imp-faq-item summary::-webkit-details-marker{display:none}.imp-faq-item summary:after{content:"";flex-shrink:0;width:10px;height:10px;border-right:2px solid var(--imp-text-muted);border-bottom:2px solid var(--imp-text-muted);transform:rotate(45deg);transition:transform .2s ease,border-color .2s ease;margin-top:-3px}.imp-faq-item[open] summary:after{transform:rotate(-135deg);border-color:var(--imp-accent);margin-top:3px}.imp-faq-item summary:hover{color:var(--imp-accent)}.imp-faq-answer{padding:0 24px 20px;font-size:14px;color:var(--imp-text-sec);line-height:1.65}.imp-faq-answer p{margin:0 0 10px}.imp-faq-answer p:last-child{margin-bottom:0}.imp-faq-answer ol,.imp-faq-answer ul{margin:8px 0 0;padding-left:20px}.imp-faq-answer li{margin-bottom:4px}.imp-faq-answer strong{color:var(--imp-text);font-weight:600}.imp-faq-answer a{color:var(--imp-accent);text-decoration:none;transition:color .15s ease}.imp-faq-answer a:hover{color:var(--imp-accent-hover);text-decoration:underline}.imp-footer-links{display:flex;gap:24px;margin-top:40px;padding-top:24px;border-top:1px solid var(--imp-glass-border)}.imp-link{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--imp-accent);text-decoration:none;transition:color .15s ease}.imp-link:hover{color:var(--imp-accent-hover);text-decoration:underline}.imp-link-muted{color:var(--imp-text-muted)}.imp-link-muted:hover{color:var(--imp-accent)}.light .imp{--imp-surface-hover:rgba(14,122,138,0.08);--imp-surface-open:rgba(14,122,138,0.05)}.light .imp-search-wrap{background:linear-gradient(to bottom,var(--color-bg-base,#b0d4e8) 60%,transparent 100%)}.light .imp-faq-item:hover{border-color:rgba(14,122,138,.45);box-shadow:0 4px 20px rgba(14,122,138,.12),0 0 0 1px rgba(14,122,138,.1)}.light .imp-faq-item[open]{border-color:rgba(14,122,138,.35);box-shadow:0 2px 12px rgba(14,122,138,.1)}.light .imp-quicknav-chip:hover{background:rgba(14,122,138,.1);box-shadow:0 2px 8px rgba(14,122,138,.12)}@media (max-width:768px){.imp{padding:64px 16px 48px}.imp-search-input{font-size:13px;padding:12px 40px}.imp-quicknav{gap:6px;margin-bottom:28px}.imp-quicknav-chip{font-size:11.5px;padding:6px 11px}.imp-faq-item summary{padding:16px 18px;font-size:14px}.imp-faq-answer{padding:0 18px 16px;font-size:13px}.imp-footer-links{flex-direction:column;gap:12px}}