:root{--bg: #f7f4ef;--paper: #fffdf9;--ink: #211d18;--muted: #6f675d;--line: #e4ddd1;--accent: #9c5b3b;--accent-soft: #efe6db;--display: "Cormorant Garamond", Georgia, serif;--sans: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:400;-webkit-font-smoothing:antialiased;line-height:1.55}code{font-family:JetBrains Mono,ui-monospace,monospace;background:var(--accent-soft);padding:1px 6px;border-radius:4px;font-size:.88em}.s-shell{max-width:860px;margin:0 auto;padding:0 24px}.s-center{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.s-wordmark{font-family:var(--display);font-size:44px;font-weight:500;letter-spacing:.5px}.s-wordmark-sm{font-size:26px}.s-tagline{color:var(--muted);font-size:15px;margin-top:4px;font-style:italic}.s-display{font-family:var(--display);font-weight:600;font-size:40px;line-height:1.1;margin:6px 0 14px}.s-eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:12px;color:var(--accent);margin:40px 0 0}.s-lede{font-size:18px;color:var(--muted);max-width:62ch;margin:0 0 8px}.s-dim{color:var(--muted)}.s-error{color:var(--accent);font-size:14px;margin-top:16px}.s-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 22px;border-radius:999px;font-size:15px;font-weight:500;text-decoration:none;border:1px solid transparent;cursor:pointer}.s-btn-primary{background:var(--ink);color:var(--paper)}.s-btn-primary:hover{background:var(--accent)}.s-linkbtn{background:none;border:none;color:var(--muted);font:inherit;cursor:pointer;padding:0}.s-linkbtn:hover{color:var(--accent)}.s-topbar{display:flex;align-items:center;justify-content:space-between;padding:22px 0;border-bottom:1px solid var(--line);margin-bottom:8px}.s-nav{display:flex;align-items:center;gap:22px;font-size:15px}.s-nav-item{color:var(--muted)}.s-nav-active{color:var(--ink);font-weight:500}.s-logout{margin:0}.s-main{padding-bottom:80px}.s-track{margin-top:44px}.s-track-title{font-family:var(--display);font-size:26px;font-weight:600;padding-bottom:10px;border-bottom:2px solid var(--accent-soft)}.s-modules{list-style:none;margin:0;padding:0}.s-module{padding:22px 0;border-bottom:1px solid var(--line)}.s-module-head{display:flex;align-items:baseline;gap:14px}.s-module-num{font-family:var(--sans);font-size:15px;font-weight:600;color:var(--accent);letter-spacing:.04em}.s-module-title{font-size:19px;font-weight:600;margin:0}.s-lessons{margin:12px 0 0;padding-left:34px;color:var(--muted)}.s-lesson{padding:3px 0}.s-exercise{margin:12px 0 0 34px;font-size:14px;color:var(--ink)}.s-exercise-label{text-transform:uppercase;letter-spacing:.14em;font-size:11px;color:var(--accent);margin-right:10px;font-weight:600}.s-tag{margin-left:10px;font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 8px}.s-signoff{margin-top:48px;font-size:13px}.s-progress{color:var(--muted)}.s-lessons{list-style:none;padding-left:34px}.s-lesson{padding:0}.s-lesson-link{display:flex;align-items:baseline;gap:10px;padding:5px 0;color:var(--ink);text-decoration:none}.s-lesson-link:hover{color:var(--accent)}.s-lesson-link:hover span:last-child{text-decoration:underline;text-underline-offset:3px}.s-check{color:var(--line);font-size:13px;width:14px;flex:none}.s-lesson-done .s-check{color:var(--accent)}.s-lesson-done .s-lesson-link{color:var(--muted)}.s-plain{text-decoration:none;color:inherit}.s-lesson-page{max-width:680px}.s-lesson-body{font-family:var(--sans);font-size:18px;line-height:1.65;color:var(--ink);margin:0 0 20px;font-variant-numeric:lining-nums tabular-nums}.s-lesson-body strong{font-weight:600}.s-exercise-card{background:var(--accent-soft);border-radius:12px;padding:18px 20px;margin:8px 0 28px}.s-exercise-card p{margin:6px 0 0}.s-btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.s-btn-ghost:hover{background:var(--accent-soft);color:var(--ink)}.s-lesson-actions{margin:8px 0 40px}.s-lesson-nav{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding-top:20px}.s-lesson-nav-link{color:var(--muted);text-decoration:none;font-size:15px;max-width:45%}.s-lesson-nav-link:hover{color:var(--accent)}.s-lesson-nav-link.s-right{text-align:right}.s-visual{margin:4px 0 30px}.s-visual svg{width:100%;height:auto;display:block}.s-quote{margin:4px 0 30px;padding:2px 0 2px 22px;border-left:3px solid var(--accent);font-family:var(--display);font-size:23px;font-style:italic;line-height:1.35;color:var(--ink)}.s-quote cite{display:block;margin-top:12px;font-size:14px;font-style:normal;color:var(--muted)}.s-refs{margin:0 0 36px}.s-refs ul{margin:8px 0 0;padding-left:18px}.s-refs li{padding:3px 0}.s-refs a{color:var(--accent)}.s-feedback{margin:40px 0 8px;border-top:1px solid var(--line);padding-top:18px}.s-feedback summary{cursor:pointer;color:var(--muted);font-size:14px;list-style:none}.s-feedback summary:hover{color:var(--accent)}.s-feedback-form{margin-top:14px}.s-feedback-hint{font-size:13px;margin:0 0 8px}.s-feedback-input{width:100%;font:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);resize:vertical}.s-feedback-input:focus{outline:none;border-color:var(--accent)}.s-feedback-row{display:flex;align-items:center;gap:14px;margin-top:10px}.s-feedback-thanks{color:var(--accent);font-size:14px}