:root{color-scheme:light;--ink: #171717;--muted: #62615f;--paper: #fbfaf7;--surface: #ffffff;--line: #dedbd2;--line-strong: #c6c0b5;--coral: #e44f3a;--teal: #117c72;--green: #2d7d46;--yellow: #f0bf36;--violet: #6953b8;--shadow: 0 18px 45px rgba(23, 23, 23, .08);--radius: 8px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}#lesson-player,#badges,#paths,#vault,#latest{scroll-margin-top:96px}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;min-height:64px;padding:0 24px;border-bottom:1px solid rgba(23,23,23,.08);background:#fbfaf7eb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border:2px solid var(--ink);border-radius:7px;background:var(--yellow);font-size:.78rem}.nav{display:flex;align-items:center;gap:8px}.nav a{padding:8px 10px;border-radius:7px;color:var(--muted);font-size:.95rem;font-weight:650}.nav a:hover,.nav a:focus-visible{background:#117c7217;color:var(--ink);outline:none}.topbar-status{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:.82rem;font-weight:850;min-width:0}.topbar-status strong{max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sync-pill{display:inline-flex;align-items:center;width:max-content;min-height:24px;padding:0 8px;border:1px solid rgba(17,124,114,.22);border-radius:999px;background:#117c7217;color:var(--teal);font-size:.72rem;font-weight:900;text-transform:capitalize}.sync-pill.error{border-color:#e44f3a59;background:#e44f3a14;color:var(--coral)}.sync-pill.local{border-color:#62615f47;background:#62615f14;color:var(--muted)}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:42px;align-items:center;min-height:calc(100vh - 64px);padding:44px 0 36px}.hero-copy h1{max-width:780px;margin:0;font-size:clamp(2.6rem,7vw,5.8rem);line-height:.96;letter-spacing:0}.hero-text{max-width:670px;margin:24px 0 0;color:var(--muted);font-size:1.18rem}.eyebrow,.label{margin:0 0 8px;color:var(--teal);font-size:.75rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.label{color:var(--muted)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.auth-panel{display:grid;gap:12px;max-width:620px;margin-top:24px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.auth-panel.signed-in{grid-template-columns:auto minmax(0,1fr) auto;align-items:center}.auth-panel strong{display:block;min-width:0}.auth-panel p{margin:5px 0 0;color:var(--muted);font-size:.9rem}.email-auth{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.email-auth input{min-height:36px;min-width:0;padding:0 10px;border:1px solid var(--line-strong);border-radius:7px;background:var(--paper);color:var(--ink)}.email-auth input:focus{border-color:var(--teal);outline:3px solid rgba(17,124,114,.14)}.auth-note{padding:9px 10px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--muted);font-weight:750}.auth-note.error{border-color:#e44f3a59;background:#e44f3a14;color:var(--coral)}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border:1px solid transparent;border-radius:7px;font-weight:800;transition:transform .16s ease,box-shadow 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var(--line);font-weight:800}.status-dot{width:10px;height:10px;border-radius:999px;background:var(--green)}.lab-time{margin-left:auto;color:var(--muted);font-size:.84rem}.terminal-lines{display:grid;gap:14px;padding:22px;background:#1b1b1a;color:#f8f3df;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;min-height:240px}.terminal-lines p{margin:0}.terminal-lines span{color:var(--yellow)}.mini-checklist{display:grid;grid-template-columns:repeat(3,1fr)}.mini-checklist span{padding:14px 12px;border-right:1px solid var(--line);text-align:center;font-weight:850}.mini-checklist span:last-child{border-right:0}.metrics-band{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--yellow)}.metrics-grid{display:grid;grid-template-columns:repeat(5,1fr)}.metrics-grid div{min-height:94px;padding:18px 20px;border-right:1px solid rgba(23,23,23,.28)}.metrics-grid div:last-child{border-right:0}.metrics-grid 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p{margin:0;color:var(--muted);font-size:.9rem;font-weight:750}.badge-claim label{display:grid;gap:6px;color:var(--muted);font-size:.78rem;font-weight:850}.badge-claim input{min-height:38px;width:100%;padding:0 10px;border:1px solid var(--line-strong);border-radius:7px;background:var(--surface);color:var(--ink)}.badge-claim input:focus{border-color:var(--teal);outline:3px solid rgba(17,124,114,.14)}.badge-claim code{display:block;max-width:100%;padding:8px;overflow:auto;border:1px solid var(--line);border-radius:7px;background:var(--surface);color:var(--muted);font-size:.74rem}.badge-actions{display:flex;flex-wrap:wrap;gap:8px}.verification-page{display:grid;align-items:center;min-height:calc(100vh - 64px);padding:54px 0}.verification-card{max-width:860px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.verification-card h1{max-width:760px;margin:0;font-size:clamp(2.3rem,5vw,4.8rem);line-height:.98;letter-spacing:0}.verification-card p{max-width:680px;color:var(--muted);font-size:1.08rem}.verification-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:24px 0}.verification-stats div{padding:14px;border:1px solid var(--line);border-radius:7px;background:var(--paper)}.verification-stats strong{display:block;font-size:1.8rem;line-height:1;text-transform:capitalize}.verification-stats span{color:var(--muted);font-weight:750}.workspace{display:grid;grid-template-columns:280px minmax(0,1fr) 300px;gap:18px;align-items:start;padding:72px 0}.lesson-rail,.lesson-stage,.coach-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.lesson-rail,.coach-panel{position:sticky;top:82px;max-height:calc(100vh - 102px);overflow:auto}.lesson-rail,.coach-panel,.lesson-stage{padding:18px}.section-heading{max-width:720px;margin-bottom:24px}.section-heading h2{margin:0;font-size:clamp(1.9rem,4vw,3.2rem);line-height:1;letter-spacing:0}.section-heading p:last-child{margin:12px 0 0;color:var(--muted);font-size:1.04rem}.section-heading.compact{margin-bottom:16px}.section-heading.compact h2{font-size:1.4rem}.field{display:grid;gap:8px;margin-bottom:14px;color:var(--muted);font-size:.82rem;font-weight:800}.field input{width:100%;height:42px;padding:0 12px;border:1px solid var(--line-strong);border-radius:7px;background:var(--paper);color:var(--ink)}.field input:focus{border-color:var(--teal);outline:3px solid rgba(17,124,114,.14)}.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.chip{min-height:32px;padding:0 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);font-size:.78rem;font-weight:850}.chip.active{border-color:var(--ink);background:var(--ink);color:#fff}.lesson-list{display:grid;gap:8px}.empty-state{display:grid;gap:10px;padding:14px;border:1px dashed 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var(--line);border-radius:7px;background:var(--paper);white-space:pre-wrap;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.78rem}.footer{display:flex;justify-content:space-between;gap:16px;padding:26px 0;color:var(--muted);font-weight:700}@media(max-width:1080px){.hero,.workspace,.latest-layout{grid-template-columns:1fr}.hero{min-height:auto}.lesson-rail,.coach-panel{position:static;max-height:none}.lesson-stage{order:1}.coach-panel{order:2}.lesson-rail{order:3}.path-grid,.badge-grid,.vault-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){.topbar{align-items:flex-start;gap:12px;flex-direction:column;padding:12px 16px}.nav{width:100%;overflow-x:auto;padding-bottom:2px}.topbar-status{width:100%}.auth-panel.signed-in,.email-auth{grid-template-columns:1fr}.shell{width:min(100% - 24px,1180px)}#lesson-player,#badges,#paths,#vault,#latest{scroll-margin-top:138px}.hero{padding-top:34px}.hero-copy 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