.tecm-root[data-astro-cid-ekhnqe5z]{background-color:#0d1117;min-height:100vh;padding-top:72px;font-family:Inter,system-ui,sans-serif;display:flex}.tecm-sidebar[data-astro-cid-ekhnqe5z]{background:#0a0d13;border-right:1px solid #ffffff0f;flex-direction:column;width:268px;min-width:268px;height:calc(100vh - 72px);display:flex;position:sticky;top:72px;overflow-y:auto}.sidebar-header[data-astro-cid-ekhnqe5z]{border-bottom:1px solid #ffffff0d;align-items:center;gap:12px;padding:24px 20px 18px;display:flex}.sidebar-logo[data-astro-cid-ekhnqe5z]{color:#0a84ff;background:#0a84ff1f;border:1px solid #0a84ff33;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;display:flex}.sidebar-nav[data-astro-cid-ekhnqe5z]{flex:1;padding:12px 0;overflow-y:auto}.unit-btn[data-astro-cid-ekhnqe5z]{cursor:pointer;color:#fff9;text-align:left;background:0 0;border:none;align-items:center;gap:11px;width:100%;padding:11px 18px;transition:background .18s,color .18s;display:flex}.unit-btn[data-astro-cid-ekhnqe5z]:hover{color:#ffffffe6;background:#ffffff0a}.unit-btn[data-astro-cid-ekhnqe5z].active{color:#4ac1ff;background:#0a84ff1a}.unit-icon-wrap[data-astro-cid-ekhnqe5z]{width:32px;height:32px;color:inherit;background:#ffffff0d;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;transition:background .18s;display:flex}.unit-btn[data-astro-cid-ekhnqe5z].active .unit-icon-wrap[data-astro-cid-ekhnqe5z]{color:#0a84ff;background:#0a84ff2e}.unit-info[data-astro-cid-ekhnqe5z]{flex-direction:column;flex:1;min-width:0;display:flex}.unit-label[data-astro-cid-ekhnqe5z]{letter-spacing:.07em;text-transform:uppercase;color:#0a84ff;margin-bottom:2px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:600;line-height:1}.unit-sub[data-astro-cid-ekhnqe5z]{color:inherit;white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;overflow:hidden}.chevron-wrap[data-astro-cid-ekhnqe5z]{opacity:.3;flex-shrink:0;transition:transform .22s,opacity .18s}.unit-btn[data-astro-cid-ekhnqe5z].active .chevron-wrap[data-astro-cid-ekhnqe5z]{opacity:.7;transform:rotate(90deg)}.file-list[data-astro-cid-ekhnqe5z]{max-height:0;padding-left:18px;transition:max-height .28s;overflow:hidden}.file-list[data-astro-cid-ekhnqe5z].open{max-height:240px}.file-btn[data-astro-cid-ekhnqe5z]{cursor:pointer;color:#ffffff80;text-align:left;background:0 0;border:none;border-radius:7px;align-items:center;gap:8px;width:100%;margin-bottom:2px;padding:8px 14px;font-size:12.5px;transition:background .18s,color .18s;display:flex}.file-btn[data-astro-cid-ekhnqe5z]:hover{color:#ffffffd9;background:#ffffff0a}.file-btn[data-astro-cid-ekhnqe5z].active{color:#4ac1ff;background:#0a84ff1f}.file-icon[data-astro-cid-ekhnqe5z]{opacity:.5;flex-shrink:0}.file-btn[data-astro-cid-ekhnqe5z].active .file-icon[data-astro-cid-ekhnqe5z]{opacity:1;color:#0a84ff}.sidebar-footer[data-astro-cid-ekhnqe5z]{border-top:1px solid #ffffff0d;padding:14px 20px}.back-link[data-astro-cid-ekhnqe5z]{color:#ffffff59;align-items:center;gap:7px;font-size:12px;text-decoration:none;transition:color .18s;display:inline-flex}.back-link[data-astro-cid-ekhnqe5z]:hover{color:#ffffffbf}.tecm-main[data-astro-cid-ekhnqe5z]{background:#0d1117;flex-direction:column;flex:1;min-width:0;display:flex}.welcome-state[data-astro-cid-ekhnqe5z]{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:48px 32px;display:flex}.welcome-icon-wrap[data-astro-cid-ekhnqe5z]{color:#0a84ff;background:#0a84ff14;border:1px solid #0a84ff33;border-radius:24px;justify-content:center;align-items:center;width:80px;height:80px;display:flex}.cards-grid[data-astro-cid-ekhnqe5z]{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;width:100%;max-width:680px;display:grid}.unit-card[data-astro-cid-ekhnqe5z]{cursor:pointer;background:#ffffff08;border:1px solid #ffffff12;border-radius:14px;flex-direction:column;align-items:center;padding:22px 14px;transition:background .22s,border-color .22s,transform .22s,box-shadow .22s;display:flex}.unit-card[data-astro-cid-ekhnqe5z]:hover{background:#0a84ff14;border-color:#0a84ff4d;transform:translateY(-3px);box-shadow:0 12px 28px #0a84ff1f}.card-icon-bg[data-astro-cid-ekhnqe5z]{border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.viewer-state[data-astro-cid-ekhnqe5z]{flex-direction:column;flex:1;min-height:0;display:flex}.viewer-topbar[data-astro-cid-ekhnqe5z]{background:#ffffff05;border-bottom:1px solid #ffffff0f;flex-shrink:0;justify-content:space-between;align-items:center;padding:14px 24px;display:flex}.viewer-title-wrap[data-astro-cid-ekhnqe5z]{align-items:center;display:flex}.viewer-actions[data-astro-cid-ekhnqe5z]{gap:9px;display:flex}.action-btn[data-astro-cid-ekhnqe5z]{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:6px;padding:7px 15px;font-size:13px;font-weight:500;text-decoration:none;transition:background .2s,color .2s;display:inline-flex}.btn-ghost[data-astro-cid-ekhnqe5z]{color:#ffffffa6;background:#ffffff0d;border:1px solid #ffffff17}.btn-ghost[data-astro-cid-ekhnqe5z]:hover{color:#fff;background:#ffffff17}.btn-primary[data-astro-cid-ekhnqe5z]{color:#fff;background:#0a84ff;box-shadow:0 4px 12px #0a84ff40}.btn-primary[data-astro-cid-ekhnqe5z]:hover{background:#0073e6}.viewer-frame-wrap[data-astro-cid-ekhnqe5z]{flex-direction:column;flex:1;min-height:0;display:flex}.pdf-frame[data-astro-cid-ekhnqe5z]{border:none;flex:1;width:100%;min-height:calc(100vh - 200px)}.video-frame[data-astro-cid-ekhnqe5z]{object-fit:contain;background:#000;flex:1;width:100%;max-height:calc(100vh - 160px)}.fallback-msg[data-astro-cid-ekhnqe5z]{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:8px;padding:48px;display:flex}.hidden[data-astro-cid-ekhnqe5z]{display:none!important}.tecm-sidebar[data-astro-cid-ekhnqe5z]::-webkit-scrollbar{width:4px}.tecm-sidebar[data-astro-cid-ekhnqe5z]::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}@media (width<=960px){.tecm-root[data-astro-cid-ekhnqe5z]{flex-direction:column;padding-top:64px}.tecm-sidebar[data-astro-cid-ekhnqe5z]{width:100%;min-width:unset;height:auto;max-height:44vh;position:relative;top:0}.viewer-topbar[data-astro-cid-ekhnqe5z]{flex-direction:column;align-items:flex-start;gap:10px}.cards-grid[data-astro-cid-ekhnqe5z]{grid-template-columns:repeat(2,1fr)}}