.hub{--bg:var(--course-bg);--panel:var(--course-panel);--text:var(--course-text);--muted:var(--course-muted);--line:var(--course-line);--cyan:var(--course-cyan);--cyan-deep:var(--course-cyan-deep);background:var(--bg);min-height:100dvh;color:var(--text);--lightningcss-light: ;--lightningcss-dark:initial;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;justify-content:center;align-items:center;font-family:Inter,sans-serif;display:flex;position:relative;overflow:hidden}.hub[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}.hub:before{content:"";pointer-events:none;background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);background-size:72px 72px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#0000,#000 22%,#0000);mask-image:linear-gradient(#0000,#000 22%,#0000)}.hub:after{content:"";pointer-events:none;background:radial-gradient(circle at 50% 34%, color-mix(in srgb, var(--cyan) 16%, transparent), transparent 62%);position:absolute;inset:0}.hub-inner{z-index:1;text-align:center;flex-direction:column;align-items:center;gap:30px;width:min(760px,100% - 40px);padding:56px 0;display:flex;position:relative}.hub-logo{filter:invert();width:auto;height:62px;display:block}.hub[data-theme=light] .hub-logo{filter:none}.hub-kicker{border:1px solid var(--cyan);color:var(--cyan);letter-spacing:.18em;text-transform:uppercase;border-radius:999px;padding:7px 13px;font-size:10px;font-weight:700}.hub-title{letter-spacing:-.02em;max-width:620px;margin:0;font-family:Plus Jakarta Sans,sans-serif;font-size:clamp(28px,4.4vw,46px);font-weight:800;line-height:1.05}.hub-sub{max-width:480px;color:var(--muted);margin:-12px 0 0;font-size:15px;line-height:1.6}.hub-links{gap:14px;width:100%;display:grid}.hub-card{border:1px solid var(--line);background:var(--panel);width:100%;color:var(--text);text-align:left;border-radius:16px;align-items:center;gap:16px;padding:22px 24px;text-decoration:none;transition:border-color .2s,transform .2s,box-shadow .2s;display:flex}.hub-card:hover{border-color:var(--cyan);box-shadow:0 16px 44px color-mix(in srgb, var(--cyan) 14%, transparent);transform:translateY(-2px)}.hub-card>svg{width:26px;height:26px;color:var(--cyan);flex:none}.hub-card>div{flex:1;min-width:0}.hub-card strong{letter-spacing:-.01em;font-family:Plus Jakarta Sans,sans-serif;font-size:19px;font-weight:800;display:block}.hub-card small{color:var(--muted);margin-top:4px;font-size:13px;line-height:1.5;display:block}.hub-card .hub-arrow{width:18px;height:18px;color:var(--muted);flex:none;transition:transform .2s,color .2s}.hub-card:hover .hub-arrow{color:var(--cyan);transform:translate(4px)}.hub-pair{grid-template-columns:1fr 1fr;gap:14px;width:100%;display:grid}.hub-pair .hub-card{padding:18px 20px}.hub-pair .hub-card strong{font-size:16px}.hub-pair .hub-card>svg{width:22px;height:22px}.hub-note{color:var(--muted);margin:0;font-size:12px}.hub-note a{color:var(--cyan)}@media (width<=640px){.hub-inner{gap:24px;padding:40px 0}.hub-logo{height:52px}.hub-pair{grid-template-columns:minmax(0,1fr)}}