@font-face{font-family:KMR Waldenburg;src:url(/fonts/KMRWaldenburg-Regular.woff2)format("woff2");font-weight:300 450;font-display:swap}@font-face{font-family:KMR Waldenburg;src:url(/fonts/KMRWaldenburg-Medium.woff2)format("woff2");font-weight:500 600;font-display:swap}@font-face{font-family:KMR Waldenburg;src:url(/fonts/KMRWaldenburg-Bold.woff2)format("woff2");font-weight:700 900;font-display:swap}:root{--nch-font:"KMR Waldenburg", "Helvetica Neue", Arial, sans-serif;--nch-fs-xs:11px;--nch-fs-sm:12px;--nch-fs-base:13px;--nch-fs-md:14px;--nch-fs-lg:15px;--nch-fs-xl:17px;--nch-ink:#000;--nch-ink-strong:#2e2e2a;--nch-ink-body:#3a3a36;--nch-ink-soft:#4b4b4b;--nch-ink-mute:#6b6b66;--nch-ink-faint:#9b9b96;--nch-white:#fff;--nch-bg:#fff;--nch-surface:#f2f2f2;--nch-surface-2:#faf9f6;--nch-surface-3:#fbfbf9;--nch-field-bg:#f4f3ef;--nch-track:#f0efea;--nch-line:#ecebe6;--nch-line-soft:#efeee9;--nch-line-field:#ddddd7;--nch-line-strong:#d9d8d3;--nch-line-bold:#c9c8c3;--nch-line-dot:#d6d5d0;--nch-lime:#ccff48;--nch-lime-ink:#1f2b00;--nch-lime-wash:#f7fbe9;--nch-lime-line:#e8f4bc;--nch-dark:#11061f;--nch-link:#0524a8;--nch-success:#00ba7b;--nch-success-bg:#eaf7f1;--nch-success-ink:#00744d;--nch-warn:#f09000;--nch-warn-bg:#fff4e5;--nch-warn-ink:#9a5b00;--nch-error:#e5484d;--nch-error-bg:#fdecec;--nch-error-ink:#b42318;--nch-info:#3576f6;--nch-info-bg:#eaf0ff;--nch-info-ink:#1c4fd6;--nch-violet:#533afd;--nch-ink-hover:#1c1c1c;--nch-lime-hover:#c2f531;--nch-grad-video:linear-gradient(135deg, #1a0d33, #3d1b6e);--nch-grad-hero:linear-gradient(130deg, #cd71da, #43015d);--nch-grad-mentor:linear-gradient(135deg, #cd71da, #533afd);--nch-glow:radial-gradient(circle at 80% 20%, #533afd 0, transparent 42%), radial-gradient(circle at 15% 90%, #cd71da 0, transparent 40%);--nch-r-card:24px;--nch-r-card-sm:18px;--nch-r-md:14px;--nch-r-control:9px;--nch-r-sm:8px;--nch-r-pill:100px;--nch-shadow-float:0 2px 4px #00000008, 0 22px 50px #00000012;--nch-shadow-card:0 1px 2px #0000000a;--nch-cover-1:linear-gradient(135deg, #3576f6, #0524a8);--nch-cover-2:linear-gradient(135deg, #533afd, #43015d);--nch-cover-3:linear-gradient(135deg, #0524a8, #43015d);--nch-cover-4:linear-gradient(135deg, #f09000, #cd71da);--nch-cover-5:linear-gradient(135deg, #00ba7b, #0524a8)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--nch-font);color:var(--nch-ink);background:var(--nch-bg);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility}a{color:inherit}button,input,textarea,select{font-family:inherit}@keyframes nch-shimmer{0%{background-position:-400px 0}to{background-position:400px 0}}@keyframes nch-spin{to{transform:rotate(360deg)}}.nch-focus:focus-visible,input:focus-visible,button:focus-visible,a:focus-visible{outline:2px solid var(--nch-ink);outline-offset:2px}.nch-btn{border-radius:var(--nch-r-sm);cursor:pointer;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:13px 22px;font-size:14px;font-weight:400;line-height:1;text-decoration:none;transition:background-color .15s,color .15s,border-color .15s,transform 50ms,opacity .15s;display:inline-flex}.nch-btn:active{transform:translateY(.5px)}.nch-btn:disabled{opacity:.5;cursor:not-allowed}.nch-btn--sm{padding:8px 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var(--nch-line-field);border-radius:var(--nch-r-control);width:100%;color:var(--nch-ink);background:var(--nch-white);outline:none;padding:12px 14px;font-size:14px;transition:border-color .15s,box-shadow .15s}.nch-input::placeholder{color:var(--nch-ink-faint)}.nch-input:focus{border-color:var(--nch-ink)}.nch-input:disabled{background:var(--nch-field-bg);color:var(--nch-ink-faint);cursor:not-allowed}.nch-input--error{border-width:1.5px;border-color:var(--nch-error)}.nch-badge{border-radius:var(--nch-r-sm);white-space:nowrap;align-items:center;gap:6px;padding:5px 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var(--nch-surface) 25%, var(--nch-surface-2) 37%, var(--nch-surface) 63%);background-size:400px 100%;border-radius:6px;animation:1.4s infinite nch-shimmer}@media (prefers-reduced-motion:reduce){.nch-skel{animation:none}.nch-spinner{animation-duration:1.6s}}.nch-spinner{border:2px solid var(--nch-line-bold);border-top-color:var(--nch-ink);border-radius:50%;animation:.7s linear infinite nch-spin}@media (width<=760px){.nch-auth-grid{grid-template-columns:1fr!important}.nch-auth-brand{display:none!important}}@media (width<=980px){.nch-hub-grid,.nch-cols-2{grid-template-columns:1fr!important}}@media (width<=620px){.nch-course-head,.nch-course-row{grid-template-columns:minmax(0,1fr) auto!important}.nch-course-extra{display:none!important}.nch-continue-card{padding:20px!important}}@media (width<=860px){.nch-viewer{flex-direction:column!important}.nch-viewer-aside{max-height:320px;border-right:none!important;border-bottom:1px solid 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