:root{--hd-pad:16px;--hd-bg:#000;--hd-surface:#0b0d12;--hd-card:#111827;--hd-border:#1f2937;--hd-text:#e5e7eb;--hd-muted:#9ca3af;--hd-accent:#cc8c1c;--hd-accent-strong:#e0a233}.hd-container{max-width:1100px;margin:0 auto;padding:24px}.hd-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0}.hd-title{font-size:24px;font-weight:700;margin:0}.hd-sub{color:var(--hd-muted);font-size:14px}.hd-grid{display:grid;grid-template-columns:320px 1fr;grid-gap:24px;gap:24px}@media(max-width:1024px){.hd-grid{grid-template-columns:1fr}}.hd-card{border:1px solid #1a1a1a;border-radius:10px;padding:16px;background:transparent}.hd-card h3{margin:0 0 8px}.hd-card+.hd-card{margin-top:12px}.hd-actions{display:flex;gap:8px;flex-wrap:wrap}.hd-btn{padding:10px 14px;border-radius:8px;border:1px solid #2a2a2a;background:#000;color:var(--hd-text);cursor:pointer;transition:transform .12s ease,background .12s ease,border-color .12s ease}.hd-btn--primary{background:var(--hd-accent);color:#fff;border-color:var(--hd-accent)}.hd-btn--primary:hover{background:var(--hd-accent-strong);border-color:var(--hd-accent-strong)}.hd-btn--quiet{border-color:transparent;background:transparent;color:#cbd5e1}.hd-btn--yt{display:inline-flex;align-items:center;gap:8px;border-color:var(--hd-accent);color:var(--hd-accent);background:transparent}.hd-btn--yt:hover{background:var(--hd-accent);color:#000}.hd-icon-yt{width:16px;height:12px;display:inline-block;fill:currentColor}.hd-tslink{margin-left:8px;font-size:12px}.hd-tslink a{color:var(--hd-accent);text-decoration:none;border-bottom:1px dashed #cc8c1c55}.hd-tslink a:hover{color:var(--hd-accent-strong);border-bottom-color:var(--hd-accent-strong)}.hd-btn:active{transform:translateY(1px)}.hd-btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--hd-accent)}.hd-field{display:flex;flex-direction:column;gap:6px}.hd-input,.hd-number,.hd-select{padding:10px 12px;border:1px solid #2a2a2a;border-radius:8px;font-size:14px;background:#000;color:var(--hd-text)}.hd-input:focus,.hd-number:focus,.hd-select:focus{outline:none;border-color:var(--hd-accent);box-shadow:0 0 0 2px #cc8c1c33}.hd-pill{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;background:#0f172a;color:#cbd5e1;font-size:12px}.hd-toc{position:-webkit-sticky;position:sticky;top:12px;border-left:1px dashed var(--hd-border);padding-left:12px;margin-left:12px}.hd-toc__item{display:block;padding:6px 0;color:#cbd5e1;text-decoration:none}.hd-toc__item--active{font-weight:600}.hd-toc__item--active,a{color:var(--hd-accent)}a:hover{color:var(--hd-accent-strong)}::selection{background:var(--hd-accent);color:#000}.hd-chapter-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.hd-label,.hd-muted{color:#9ca3af}.hd-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em}.hd-label--accent{color:var(--hd-accent)}.hd-help{font-size:12px;color:#9ca3af}body{background:var(--hd-bg);color:var(--hd-text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.hd-skel{display:block;border-radius:8px;background:linear-gradient(90deg,#0a0a0a 25%,#151515 37%,#0a0a0a 63%);background-size:400% 100%;animation:hd-shine 1.2s ease-in-out infinite}.hd-skel--line{height:14px}.hd-skel--title{height:22px;width:60%}.hd-skel--chip{height:28px;width:120px;border-radius:999px}.hd-skel--card{height:140px}@keyframes hd-shine{0%{background-position:100% 50%}to{background-position:0 50%}}