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13px;display:inline-flex}.auth-link:hover{color:#0d7857;border-color:#0d7857}.auth-home-link{color:var(--text-muted);margin-bottom:22px;font-size:.76rem;font-weight:700;display:inline-flex}.landing-shell{--leaf:#0d7857;--leaf-deep:#0a4636;--leaf-muted:#5c7f72;--mint:#eaf6f1;--mint-soft:#f4faf7;max-width:1400px;padding-top:34px}.landing-hero{color:var(--leaf-deep);background:var(--surface-card);border:1px solid var(--border-strong);padding:clamp(28px,5vw,68px) clamp(24px,5.5vw,78px) 28px;position:relative;overflow:hidden;box-shadow:0 20px 70px #1140310f}.landing-hero:before{content:"";background:repeating-linear-gradient(90deg, transparent 0 13px, color-mix(in srgb, var(--leaf) 45%, transparent) 13px 14px, transparent 14px 24px);opacity:.65;height:13px;position:absolute;top:0;left:0;right:0}.landing-kicker{color:var(--leaf);font:800 .7rem var(--mono);letter-spacing:.06em;align-items:center;gap:10px;display:flex}.landing-kicker span+span:before{content:"/";color:var(--border-strong);margin-right:10px}.landing-hero-grid{grid-template-columns:minmax(320px,.92fr) minmax(480px,1.08fr);align-items:center;gap:clamp(38px,7vw,96px);padding:clamp(36px,6vw,76px) 0 54px;display:grid}.landing-series{color:var(--leaf);letter-spacing:.01em;margin:0 0 18px;font-size:clamp(1.2rem,2vw,1.75rem);font-weight:760}.landing-thesis h1{max-width:640px;font-family:var(--sans);letter-spacing:-.065em;margin:0;font-size:clamp(2.65rem,5.2vw,5.65rem);font-weight:850;line-height:1.04}.landing-thesis h1 em{color:var(--leaf);font-family:var(--display);font-weight:650}.landing-lede{max-width:590px;color:var(--leaf-muted);margin:26px 0 0;font-size:1rem;line-height:1.85}.landing-thesis .btn-primary{background:var(--leaf);box-shadow:0 10px 26px #0d785733}.landing-thesis .btn-primary:hover{background:var(--leaf-deep)}.landing-preview-note{color:var(--text-muted);font:650 .68rem var(--mono);margin:13px 0 0}.landing-map{border-top:2px solid var(--leaf);border-bottom:2px solid var(--leaf)}.landing-pillar{border-top:1px solid color-mix(in srgb, var(--leaf) 22%, transparent);grid-template-columns:34px 58px minmax(0,1fr);align-items:center;gap:18px;min-height:142px;padding:22px 2px;display:grid}.landing-pillar:first-child{border-top:0}.pillar-number{color:color-mix(in srgb, var(--leaf) 65%, var(--text-muted));font:700 .65rem var(--mono);align-self:start;padding-top:6px}.pillar-icon{width:58px;height:58px;color:var(--leaf);background:var(--mint);border-radius:12px;place-items:center;display:grid}.pillar-icon svg{fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8px;width:32px;height:32px}.landing-pillar h2{letter-spacing:-.035em;margin:0 0 4px;font-size:clamp(1.2rem,2vw,1.75rem);line-height:1.25}.landing-pillar p{color:var(--leaf-muted);margin:0 0 8px;font-size:.84rem;line-height:1.5}.landing-pillar small{color:var(--leaf);font:650 .65rem var(--mono)}.landing-baseline{border-top:1px solid var(--leaf);color:var(--leaf);font:750 .72rem var(--mono);justify-content:space-between;gap:18px;padding-top:18px;display:flex}.landing-promise{border-top:1px solid var(--border-strong);border-bottom:1px solid var(--border-strong);grid-template-columns:130px minmax(0,1.4fr) minmax(260px,.7fr);gap:clamp(24px,5vw,64px);margin:94px 0;padding:38px 0;display:grid}.promise-index{color:var(--leaf);font:800 .65rem/1.4 var(--mono);letter-spacing:.14em}.landing-promise h2{letter-spacing:-.05em;max-width:720px;margin:0 0 16px;font-size:clamp(1.8rem,3.2vw,3rem);line-height:1.15}.landing-promise p{color:var(--text-secondary);margin:0;font-size:.92rem;line-height:1.9}.promise-proof{border-left:3px solid var(--leaf);padding-left:24px}.promise-proof strong{color:var(--leaf);font-size:.78rem}.promise-proof ul{color:var(--text-secondary);gap:10px;margin:14px 0 0;padding:0;font-size:.8rem;list-style:none;display:grid}.promise-proof li:before{content:"↳";color:var(--leaf);margin-right:8px}.landing-shell .eyebrow,.landing-shell .lab-card .num{color:var(--leaf)}.landing-shell .course-index{padding-top:42px}.landing-shell .domain-card,.landing-shell .lab-card{border-radius:0}.landing-shell .domain-card:hover,.landing-shell .lab-card:hover{border-color:var(--leaf)}.landing-final-cta{color:#f4fff9;background:var(--leaf-deep);margin:98px 0 0;padding:clamp(38px,7vw,76px)}.landing-final-cta>span{font:750 .65rem var(--mono);letter-spacing:.14em;opacity:.65}.landing-final-cta h2{letter-spacing:-.055em;max-width:720px;margin:16px 0 10px;font-size:clamp(2rem,4vw,4rem);line-height:1.1}.landing-final-cta p{color:#b9d4ca;max-width:680px;margin:0 0 28px}.landing-final-cta .btn-primary{color:var(--leaf-deep);box-shadow:none;background:#f4fff9}.preview-gate{background:color-mix(in srgb, #eaf6f1 74%, var(--surface-card));border:1px solid color-mix(in srgb, #0d7857 28%, var(--border));border-top:4px solid #0d7857;margin:38px 0 8px;padding:clamp(26px,5vw,48px)}.preview-gate h2{letter-spacing:-.04em;margin:8px 0 10px;font-size:clamp(1.5rem,3vw,2.4rem);line-height:1.2}.preview-gate p{max-width:650px;color:var(--text-secondary);margin:0 0 22px}.preview-gate .btn-primary{box-shadow:none;background:#0d7857}.domain-card.is-preview{opacity:1;filter:none}@media (max-width:980px){.landing-hero-grid{grid-template-columns:1fr}.landing-thesis h1{max-width:780px}.landing-promise{grid-template-columns:100px minmax(0,1fr)}.promise-proof{grid-column:2}}@media (max-width:700px){.auth-user{display:none}.auth-link{min-height:32px;padding:0 10px}.landing-shell{padding-inline:12px}.landing-hero{padding:28px 20px 22px}.landing-hero-grid{padding:34px 0 36px}.landing-thesis h1{font-size:clamp(2.25rem,10.5vw,3.2rem)}.landing-pillar{grid-template-columns:44px minmax(0,1fr);gap:14px}.pillar-number{display:none}.pillar-icon{width:44px;height:44px}.pillar-icon svg{width:25px;height:25px}.landing-baseline{flex-direction:column;align-items:flex-start}.landing-promise{grid-template-columns:1fr;margin:68px 0}.promise-proof{grid-column:1}.landing-final-cta{margin-top:68px}}