:root{--sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--bg:#0f1017;--bg-surface:#171822;--bg-card:#1e1f2e;--text:#9ca3af;--text-h:#f9fafb;--text-muted:#6b7280;--border:#ffffff1a;--border-hover:#fff3;--btn-primary-bg:#6b4de6;--btn-primary-hover:#5a3dd0;--btn-secondary-bg:#272838;--btn-secondary-hover:#323447;--btn-secondary-text:#f3f4f6;--input-bg:#171822;--input-border:#ffffff26;--code-input-bg:#232534;--code-input-border:transparent;--code-input-filled:#4a4d5c;--chat-bg:#161722;--chat-border:#ffffff14;--chat-bubble:#232536;--chat-bubble-text:#f3f4f6;--chat-bubble-mine:#6b4de6;--chat-bubble-mine-text:#fff;--chat-link:#60a5fa;--chat-link-hover:#93c5fd;--landing-bg:#0f1017;--landing-card-bg:#171824;--landing-card-inner:#1e1f30;--landing-border:#ffffff14;--tile-bg:#181924;--tile-border:#ffffff14;--tile-shadow:0 4px 20px 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.video-tile__frame,.video-tile.is-clickable:focus-visible .video-tile__frame{outline-color:#6b4de6}.video-tile--small{flex-shrink:0;width:100%;max-width:160px}.video-tile--small .video-tile__avatar{width:44px;height:44px;font-size:20px}.video-tile--small figcaption{font-size:11px}.video-tile--large .video-tile__frame{aspect-ratio:unset;width:100%;height:72vh;max-height:800px}.video-tile--large .video-tile__avatar{width:112px;height:112px;font-size:52px}.video-tile--large video{object-fit:contain;width:100%;height:100%}.video-tile.is-active .video-tile__frame{outline-offset:2px;outline:2px solid #4caf7d}.video-tile--screen .video-tile__frame{background:#000}.video-tile--screen video{object-fit:contain;background:#000}.video-tile--screen .video-tile__placeholder{color:#4caf7d;background:#111}.video-tile--screen .video-tile__placeholder svg{width:56px;height:56px}.landing{background:var(--landing-bg);min-height:100svh;color:var(--text);flex-direction:column;transition:background .2s,color .2s;display:flex}.landing__nav{border-bottom:1px solid var(--landing-border);background:var(--landing-bg);justify-content:space-between;align-items:center;padding:18px 48px;display:flex}@media (width<=600px){.landing__nav{padding:14px 20px}}.landing__nav-logo{color:var(--text-h);align-items:center;gap:10px;font-size:20px;font-weight:700;display:flex}.landing__logo-img{color:var(--text-h);flex-shrink:0;display:block}.landing__logo-text{font-weight:700}.landing__nav-right{align-items:center;gap:16px;display:flex}.landing__nav-github{color:var(--text);border-radius:6px;padding:6px 12px;font-size:14px;font-weight:500;text-decoration:none;transition:color .15s,background .15s}.landing__nav-github:hover{color:var(--text-h);background:var(--btn-secondary-bg)}.landing__hero{text-align:center;box-sizing:border-box;flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:820px;min-height:calc(100svh - 73px);margin:0 auto;padding:40px 24px;display:flex}@media (width<=600px){.landing__hero{min-height:auto;padding:60px 16px 48px}}.landing__hero-badge{color:#8b5cf6;letter-spacing:.5px;text-transform:uppercase;background:#6b4de61a;border:1px solid #6b4de659;border-radius:100px;align-items:center;gap:8px;margin-bottom:24px;padding:6px 16px;font-size:12px;font-weight:600;display:inline-flex}[data-theme=dark] .landing__hero-badge{color:#a78bfa;background:#6b4de626;border-color:#a78bfa4d}.landing__badge-dot{background:#10b981;border-radius:50%;flex-shrink:0;width:7px;height:7px;animation:2s infinite badgePulse;display:inline-block;box-shadow:0 0 #10b981b3}@keyframes badgePulse{0%{box-shadow:0 0 #10b981b3}70%{box-shadow:0 0 0 6px #10b98100}to{box-shadow:0 0 #10b98100}}.landing__hero-title{color:var(--text-h);letter-spacing:-.5px;margin:0 0 20px;font-size:clamp(34px,5.5vw,60px);font-weight:800;line-height:1.15}.landing__hero-accent{color:#6b4de6}.landing__hero-sub{color:var(--text);max-width:540px;margin:0 0 36px;font-size:clamp(16px,2vw,19px);line-height:1.6}.landing__hero-actions{flex-wrap:wrap;justify-content:center;gap:14px;display:flex}.landing__btn-primary{color:#fff;cursor:pointer;background:#6b4de6;border:none;border-radius:10px;padding:13px 28px;font-size:15.5px;font-weight:600;transition:background .15s,transform .1s,box-shadow .15s;box-shadow:0 4px 14px #6b4de64d}.landing__btn-primary:hover{background:#5a3dd0;transform:translateY(-1px);box-shadow:0 6px 20px #6b4de666}.landing__btn-primary:active{transform:translateY(0)}.landing__btn-secondary{background:var(--btn-secondary-bg);color:var(--text-h);border:1px solid var(--border);cursor:pointer;border-radius:10px;padding:13px 28px;font-size:15.5px;font-weight:600;transition:background .15s,border-color .15s}.landing__btn-secondary:hover{background:var(--btn-secondary-hover);border-color:var(--border-hover)}.landing__hero-metrics{border-top:1px solid var(--landing-border);justify-content:center;align-items:center;gap:36px;width:100%;max-width:680px;margin-top:44px;padding-top:24px;display:flex}@media (width<=600px){.landing__hero-metrics{flex-wrap:wrap;gap:18px;margin-top:28px}}.landing__metric-item{flex-direction:column;align-items:center;gap:3px;display:flex}.landing__metric-val{color:var(--text-h);letter-spacing:-.5px;font-size:20px;font-weight:800}.landing__metric-label{color:var(--text-muted);font-size:12px;font-weight:500}.landing__section-header{text-align:center;margin-bottom:28px}.landing__section-tag{letter-spacing:1.2px;color:#6b4de6;text-transform:uppercase;margin-bottom:6px;font-size:11px;font-weight:700;display:inline-block}[data-theme=dark] .landing__section-tag{color:#a78bfa}.landing__section-title{text-align:center;color:var(--text-h);letter-spacing:-.3px;margin:0 0 36px;font-size:clamp(22px,3.5vw,32px);font-weight:700}.landing__features{box-sizing:border-box;background:var(--landing-card-bg);border-top:1px solid var(--landing-border);border-bottom:1px solid var(--landing-border);flex-direction:column;justify-content:center;align-items:center;min-height:100svh;padding:60px 48px;display:flex}@media (width<=900px){.landing__features{min-height:auto;padding:60px 20px}}.landing__features-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:1060px;margin:0 auto;display:grid}.landing__feature-card{border:1px solid var(--landing-border);background:var(--landing-card-inner);text-align:left;border-radius:14px;padding:24px;transition:transform .15s,box-shadow .15s,border-color .15s;box-shadow:0 2px 12px #00000008}.landing__feature-card:hover{border-color:#6b4de64d;transform:translateY(-2px);box-shadow:0 6px 24px #0000000f}.landing__feature-card h3{color:var(--text-h);margin:12px 0 6px;font-size:17px;font-weight:600}.landing__feature-card p{color:var(--text);margin:0;font-size:14px;line-height:1.5}.landing__feature-top{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.landing__feature-tag{color:#6b4de6;letter-spacing:.3px;background:#6b4de614;border-radius:6px;padding:3px 8px;font-size:11px;font-weight:700}[data-theme=dark] .landing__feature-tag{color:#c4b5fd;background:#6b4de62e}.landing__feature-icon-box{color:#6b4de6;background:#6b4de61f;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;display:inline-flex}[data-theme=dark] .landing__feature-icon-box{color:#a78bfa;background:#6b4de62e}.landing__how{box-sizing:border-box;background:var(--landing-bg);flex-direction:column;justify-content:center;align-items:center;min-height:50svh;padding:36px 48px;display:flex}@media (width<=900px){.landing__how{min-height:auto;padding:48px 20px}}.landing__steps{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px;width:100%;max-width:960px;margin:0 auto;display:grid}.landing__step{text-align:center}.landing__step h3{color:var(--text-h);margin:10px 0 6px;font-size:16px;font-weight:600}.landing__step p{color:var(--text);margin:0;font-size:13.5px;line-height:1.5}.landing__step-num{color:#6b4de6;background:#6b4de61f;border:2px solid #6b4de659;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-size:16px;font-weight:800;display:inline-flex}[data-theme=dark] .landing__step-num{color:#a78bfa}.landing__about{box-sizing:border-box;text-align:center;background:var(--landing-card-bg);border-top:1px solid var(--landing-border);flex-direction:column;justify-content:center;align-items:center;min-height:calc(50svh - 68px);padding:36px 48px;display:flex}@media (width<=900px){.landing__about{min-height:auto;padding:48px 20px}}.landing__about-text{max-width:660px;color:var(--text);margin:0 auto 20px;font-size:15px;line-height:1.65}.landing__about-text strong{color:var(--text-h);font-weight:600}.landing__about-badges{flex-wrap:wrap;justify-content:center;gap:10px;max-width:640px;margin:0 auto 20px;display:flex}.landing__about-pill{background:var(--landing-card-inner);border:1px solid var(--border);color:var(--text-h);border-radius:20px;padding:5px 14px;font-size:12px;font-weight:500;box-shadow:0 1px 4px #0000000a}.landing__github-link{color:#6b4de6;font-size:15px;font-weight:600;text-decoration:none;display:inline-block}[data-theme=dark] .landing__github-link{color:#a78bfa}.landing__github-link:hover{text-decoration:underline}.landing__footer{border-top:1px solid var(--landing-border);color:var(--text-muted);background:var(--landing-bg);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:24px 48px;font-size:13.5px;display:flex}@media (width<=600px){.landing__footer{text-align:center;flex-direction:column;padding:20px}}.landing__footer-left{color:var(--text-h);align-items:center;gap:10px;font-weight:600;display:flex}.landing__footer-links{gap:20px;display:flex}.landing__footer-links a{color:var(--text);text-decoration:none;transition:color .15s}.landing__footer-links a:hover{color:var(--text-h);text-decoration:underline}.landing__footer-right{color:var(--text-muted)}.waiting-room{text-align:center;background:var(--bg-surface);border:1px solid var(--border);border-radius:16px;flex-direction:column;align-items:center;gap:16px;width:100%;max-width:440px;margin:30px auto;padding:48px 24px;display:flex;box-shadow:0 4px 24px #0000000f}.waiting-room__spinner{gap:8px;margin-bottom:8px;display:flex}.waiting-room__dot{background:#6b4de6;border-radius:50%;width:12px;height:12px;animation:1.2s ease-in-out infinite waiting-bounce}.waiting-room__dot:first-child{animation-delay:0s}.waiting-room__dot:nth-child(2){animation-delay:.2s}.waiting-room__dot:nth-child(3){animation-delay:.4s}.waiting-room__title{color:var(--text-h);margin:0;font-size:22px;font-weight:700}.waiting-room__sub{color:var(--text);margin:0;font-size:15px;line-height:1.5}.waiting-room__sub strong{color:var(--text-h)}@keyframes waiting-bounce{0%,80%,to{opacity:.5;transform:scale(.7)}40%{opacity:1;transform:scale(1)}}.join-loading{color:var(--text);flex-direction:column;align-items:center;gap:16px;padding:60px 24px;display:flex}.admit-panel{z-index:200;background:var(--bg-surface);border:1px solid var(--border);border-radius:12px;width:320px;max-width:calc(100vw - 48px);position:fixed;top:76px;right:24px;overflow:hidden;box-shadow:0 10px 36px #00000026}.admit-panel__header{border-bottom:1px solid var(--border);color:var(--text-h);background:var(--bg-card);align-items:center;gap:8px;padding:12px 16px;font-size:13px;font-weight:600;display:flex}.admit-panel__badge{color:#fff;background:#6b4de6;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:11px;font-weight:700;display:flex}.admit-panel__list{max-height:240px;margin:0;padding:0;list-style:none;overflow-y:auto}.admit-panel__item{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:10px 14px;display:flex}.admit-panel__item:last-child{border-bottom:none}.admit-panel__avatar{color:#6b4de6;background:#6b4de626;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;font-weight:700;display:flex}.admit-panel__name{text-overflow:ellipsis;white-space:nowrap;text-align:left;color:var(--text-h);flex:1;font-size:14px;font-weight:500;overflow:hidden}.admit-panel__actions{flex-shrink:0;gap:6px;display:flex}.admit-panel__btn{cursor:pointer;border:none;border-radius:6px;padding:6px 12px;font-size:12px;font-weight:600}.admit-panel__btn--admit{color:#fff;background:#4caf7d}.admit-panel__btn--admit:hover{background:#3d9e6e}.admit-panel__btn--reject{color:#e05555;background:#e055551f;border:1px solid #e055554d}.admit-panel__btn--reject:hover{background:#e0555538}.not-found{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:60vh;padding:40px 24px;display:flex}.not-found__code{color:var(--text-muted);opacity:.35;font-size:72px;font-weight:800;line-height:1}.not-found__title{color:var(--text-h);margin:0;font-size:24px;font-weight:700}.not-found__sub{color:var(--text);max-width:360px;margin:0 0 12px;font-size:15px;line-height:1.5}