.dd-academy-v2{--academy-rule:color-mix(in srgb, var(--text-primary) 18%, transparent);--academy-wash:color-mix(in srgb, var(--text-primary) 4%, transparent);--academy-accent-wash:color-mix(in srgb, var(--accent-primary) 9%, transparent);min-block-size:calc(100vh - var(--header-height,56px));color:var(--text-primary)}.dd-academy-v2 a,.dd-academy-v2 button{text-underline-offset:.2em}.dd-academy-v2-nav{z-index:20;border-block-end:1px solid var(--academy-rule);background:color-mix(in srgb, var(--bg-canvas) 94%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);align-items:center;gap:22px;min-block-size:45px;padding-inline:max(20px,50vw - 590px);display:flex;position:sticky;inset-block-start:var(--header-height,56px)}.dd-academy-v2-nav__brand{font-family:var(--font-serif);letter-spacing:-.015em;margin-inline-end:auto;font-size:1.05rem;font-weight:700}.dd-academy-v2-nav a:not(.dd-academy-v2-nav__brand){min-block-size:44px;color:var(--text-secondary);letter-spacing:.04em;text-transform:uppercase;align-items:center;font-size:.75rem;font-weight:700;display:inline-flex}.dd-academy-v2-nav a:hover,.dd-academy-v2-nav a:focus-visible{color:var(--text-primary)}.dd-academy-v2-main{inline-size:min(100% - 40px,1180px);margin-inline:auto;padding-block:clamp(36px,6vw,82px) 80px}.dd-academy-v2-main--reading{inline-size:min(100% - 40px,1080px)}.dd-academy-v2-kicker{color:var(--text-muted);font-family:var(--font-sans);font-size:var(--type-2xs);letter-spacing:.11em;text-transform:uppercase;margin:0;font-weight:800;line-height:1.3}.dd-academy-v2-hero{border-block-end:1px solid var(--academy-rule);grid-template-columns:minmax(0,1.55fr) minmax(250px,.75fr);align-items:end;gap:clamp(36px,7vw,92px);padding-block-end:clamp(32px,5vw,64px);display:grid}.dd-academy-v2-hero h1,.dd-academy-v2-course-head h1,.dd-academy-v2-lesson-head h1{max-inline-size:18ch;font-family:var(--font-serif);letter-spacing:-.045em;margin:10px 0 16px;font-size:clamp(2.4rem,5.4vw,5.4rem);font-weight:600;line-height:.96}.dd-academy-v2-hero__lead,.dd-academy-v2-course-head__lead,.dd-academy-v2-lesson-head__lead{max-inline-size:67ch;color:var(--text-secondary);font-family:var(--font-serif);margin:0;font-size:clamp(1.05rem,1.8vw,1.35rem);line-height:1.55}.dd-academy-v2-hero__facts{border-block-start:1px solid var(--academy-rule);gap:0;margin:0;display:grid}.dd-academy-v2-hero__facts div{border-block-end:1px solid var(--academy-rule);grid-template-columns:1fr auto;gap:16px;padding-block:12px;display:grid}.dd-academy-v2-hero__facts dt{color:var(--text-muted);font-size:.75rem}.dd-academy-v2-hero__facts dd{font-family:var(--font-data);font-variant-numeric:tabular-nums;margin:0}.dd-academy-v2-section{border-block-end:1px solid var(--academy-rule);padding-block:clamp(36px,5vw,64px)}.dd-academy-v2-section__head{grid-template-columns:minmax(0,1fr) minmax(240px,.65fr);align-items:end;gap:24px 64px;margin-block-end:30px;display:grid}.dd-academy-v2-section__head h2,.dd-academy-v2-lesson h2,.dd-academy-v2-quiz h2{font-family:var(--font-serif);letter-spacing:-.03em;margin:7px 0 0;font-size:clamp(1.7rem,3vw,2.7rem);font-weight:600;line-height:1.05}.dd-academy-v2-section__head>p{color:var(--text-secondary);margin:0;font-size:.9rem;line-height:1.6}.dd-academy-v2-course-grid{border-block-start:1px solid var(--academy-rule);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.dd-academy-v2-course-card{border-block-end:1px solid var(--academy-rule);min-block-size:330px;color:inherit;grid-template-rows:auto 1fr auto;padding:clamp(22px,3vw,34px);display:grid}.dd-academy-v2-course-card:nth-child(odd){border-inline-end:1px solid 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var(--text-primary);background:var(--text-primary);min-block-size:44px;color:var(--text-inverse);justify-content:center;align-items:center;padding-inline:18px;font-size:.78rem;font-weight:800;display:inline-flex}.dd-academy-v2-button:hover,.dd-academy-v2-button:focus-visible{color:var(--text-primary);background:0 0}.dd-academy-v2-button--quiet{border-color:var(--academy-rule);color:var(--text-primary);background:0 0}.dd-academy-v2-button--quiet:hover,.dd-academy-v2-button--quiet:focus-visible{border-color:var(--text-primary);background:var(--academy-wash)}.dd-academy-v2-progress{grid-template-columns:minmax(160px,1fr) auto;align-items:center;gap:10px 18px;display:grid}.dd-academy-v2-progress__copy{color:var(--text-muted);font-size:var(--type-2xs);grid-column:1/-1;justify-content:space-between;gap:18px;display:flex}.dd-academy-v2-progress__copy 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