:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#192c2c;background:#f2f4f0;font-size:15px;line-height:1.55;--accent:#175b4b;--muted:#61716b;--border:#dce3db}
*{box-sizing:border-box}
body{margin:0}
button,input,textarea,select{font:inherit}
button,a{touch-action:manipulation}
button{cursor:pointer;border:1px solid var(--border);border-radius:9px;background:white;color:inherit;padding:10px 15px;font-weight:600}
button:hover{border-color:var(--accent);background:#edf4ef}
button:disabled{opacity:.5;cursor:wait}
button.primary{background:var(--accent);color:white;border-color:var(--accent)}
button.danger{color:#a32d2d}
a{color:var(--accent)}
input,textarea,select{display:block;width:100%;padding:11px 12px;border:1px solid #c8d2c8;border-radius:8px;background:white;color:inherit}
textarea{min-height:110px;resize:vertical}
input[type=checkbox]{width:auto;display:inline}
label{display:block;font-size:13px;font-weight:600;margin-bottom:14px}
label input,label textarea,label select{margin-top:6px;font-weight:400}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(27px,3vw,40px);letter-spacing:-1px;line-height:1.18;margin-bottom:14px}
h2{font-size:23px;line-height:1.25}
h3{font-size:17px}
small,.muted{color:var(--muted)}
.layout{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:100vh}
.sidebar{background:#112f2b;color:#dce8de;padding:32px 20px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:22px}
.brand{font-weight:700;color:#fff;line-height:1.35;padding:0 10px}
.brand small{font-weight:400;display:block;color:#9db9ac;margin-top:8px}
.sidebar nav{display:grid;gap:6px}
.sidebar button{text-align:left;background:transparent;border-color:transparent;color:#dce8de}
.sidebar button.active,.sidebar button:hover{background:#284a3e}
.sidebar .account{margin-top:auto;font-size:13px;overflow-wrap:anywhere;padding:10px}
.sidebar .account button{padding-left:0}
.main{padding:42px 5%;max-width:1450px;width:100%;margin:0 auto}
.topline{font-size:11px;text-transform:uppercase;letter-spacing:2px;color:var(--muted);margin-bottom:18px}
.hero{background:#e5eddf;border-radius:18px;padding:30px 34px;margin-bottom:26px}
.hero p{max-width:650px;margin-bottom:0}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.between{justify-content:space-between}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{padding:24px;border:1px solid var(--border);background:white;border-radius:14px;margin-bottom:18px}
.grid .card{margin-bottom:0}
.card p:last-child{margin-bottom:0}
.metric{font-size:34px;font-weight:700}
.stack{display:grid;gap:16px}
.stack .card{margin:0}
.tag{display:inline-block;padding:3px 9px;border-radius:20px;background:#eef2e9;font-size:12px;color:#456548}
.tag.warn{background:#fff1d6;color:#895d12}
.empty{padding:32px;color:var(--muted);border:1px dashed #c5d2c5;border-radius:12px;background:#fafbf8}
.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:24px 0}
.tabs .active{background:#dce9df;border-color:#aabcae}
.auth{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}
.auth-intro{background:#153e33;color:white;padding:12vh 11%;display:flex;flex-direction:column;justify-content:center}
.auth-intro p{color:#c2d8c7;max-width:460px;font-size:18px}
.auth-intro h1{font-size:clamp(35px,4vw,60px)}
.auth-form{padding:8vh 12%;display:flex;flex-direction:column;justify-content:center;max-width:700px;width:100%;margin:auto}
.auth-form .tabs{margin-top:0}
#notice{position:fixed;bottom:24px;right:24px;max-width:500px;background:#173f34;color:white;padding:16px 22px;border-radius:12px;box-shadow:0 8px 40px #0002;z-index:100}
#notice:empty{display:none}
#notice.error{background:#8d2929}
.loading{padding:50px}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 18px}
.wide{grid-column:1/-1}
details{margin-bottom:18px}
summary{cursor:pointer;font-weight:600;padding:10px 0}
details form{padding-top:14px}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:13px}
td,th{text-align:left;padding:12px;border-bottom:1px solid var(--border);vertical-align:top}
th{color:var(--muted);font-weight:600}
progress{width:100%;height:9px;accent-color:var(--accent);margin:14px 0}
video{width:100%;max-height:580px;background:#122722;border-radius:12px}
.lesson-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85}
.lesson-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(260px,1fr);gap:22px}
.lesson-list button{display:block;width:100%;text-align:left;margin:8px 0}
.form-error{color:#942b2b}
.field-editor{border:1px solid var(--border);padding:15px;border-radius:10px;margin-bottom:12px}
.file-list{margin:0;padding-left:20px}
.file-list li{padding:5px}
.print-only{display:none}
@media(max-width:900px){.layout{grid-template-columns:1fr}
.sidebar{position:static;height:auto;padding:18px;gap:12px}
.sidebar nav{display:flex;flex-wrap:wrap}
.sidebar .account{margin:0;padding:0 10px;display:flex;gap:14px;align-items:center}
.main{padding:25px 20px}
.brand small{display:none}
.auth{grid-template-columns:1fr}
.auth-intro{padding:35px 28px}
.auth-form{padding:28px}
.lesson-layout{grid-template-columns:1fr}
}
@media print{.sidebar,button,.topline,#notice,.no-print{display:none!important}
.layout,.main{display:block;padding:0}
.card{border:none;padding:10px 0;break-inside:avoid}
.print-only{display:block}
body{background:white}
}

/* Course experience: a calmer editorial layer above the shared school shell. */
:root{--course-ink:#191918;--course-ink-soft:#22211e;--course-cream:#f0ebe2;--course-amber:#e5a06d;--course-muted:#b9b4aa}
.course-card{padding:0;overflow:hidden;border-radius:16px;background:var(--course-ink);border-color:#203934;color:var(--course-cream);display:flex;flex-direction:column;min-height:100%}
.course-card-cover{aspect-ratio:16/9;min-height:0;padding:18px;background-color:#1d3b35;background-size:cover;background-position:center;display:flex;flex-direction:column;justify-content:space-between}
.course-card-cover small{color:#efe9dc;text-transform:uppercase;letter-spacing:.12em;font-size:10px}
.course-card-cover .tag{background:#efe9dc;color:#26342f}
.course-card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.course-card h2{margin:0 0 10px;font-size:27px;letter-spacing:-.04em}
.course-card .muted{color:#d1cec4;line-height:1.6;flex:1}
.course-card progress{accent-color:var(--course-amber);background:#ffffff26}
.course-card button.primary{background:var(--course-amber);color:#1b1a18;border-color:var(--course-amber)}
.course-hero{position:relative;aspect-ratio:16/9;min-height:0;margin:-4px 0 28px;padding:34px;display:flex;align-items:flex-end;overflow:hidden;background-color:var(--course-ink);background-size:cover;background-position:center;color:var(--course-cream);border-radius:2px;isolation:isolate}
.course-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,18,17,.88) 0%,rgba(18,18,17,.52) 55%,rgba(18,18,17,.12) 100%);z-index:-1}
.course-hero-back{position:absolute;top:24px;left:24px;z-index:1}
.course-hero-content{max-width:790px}
.course-hero .row{margin-bottom:52px}
.course-hero .eyebrow,.eyebrow{font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--course-amber);font-weight:700}
.course-hero h1{font-size:clamp(42px,6vw,76px);line-height:.94;letter-spacing:-.06em;margin-bottom:20px}
.course-hero p{max-width:690px;color:#e2ded5;font-size:17px;line-height:1.65;margin-bottom:20px}
.course-hero-meta{display:flex;gap:18px;flex-wrap:wrap;color:#d2cec4;font-size:13px}
.course-hero-meta span{padding-left:12px;border-left:1px solid var(--course-amber)}
button.ghost-on-dark{color:var(--course-cream);background:#ffffff12;border-color:#ffffff4a;padding:9px 13px}
button.ghost-on-dark:hover{background:#ffffff22;border-color:#fff}
.course-tabs{display:flex;gap:18px;border-bottom:1px solid #cfc9bf;margin:0 0 36px}
.course-tabs button{border:0;border-radius:0;padding:0 0 13px;background:transparent;color:#5e625c;position:relative}
.course-tabs button:hover{color:var(--course-ink);background:transparent}
.course-tabs button.active{color:var(--course-ink);font-weight:750}
.course-tabs button.active:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:var(--course-amber)}
.module-route{border-top:1px solid #cfc9bf;padding:30px 0 34px}
.module-route:last-child{border-bottom:1px solid #cfc9bf}
.module-route-heading{display:grid;grid-template-columns:64px minmax(0,1fr);gap:18px;align-items:start;margin-bottom:20px}
.module-number{font-size:13px;font-weight:800;color:#77533b;padding-top:5px;border-top:2px solid var(--course-amber)}
.module-route h2{font-size:clamp(24px,3vw,36px);letter-spacing:-.045em;margin:7px 0 0;max-width:760px}
.module-route.is-locked .module-number{color:#85857e;border-color:#bdbab1}
.module-route.is-locked h2{color:#5e625c}
.module-lock{margin:10px 0 0;color:#77533b;font-size:13px;font-weight:750}
.module-route.is-locked .lesson-list{opacity:.82}
.lesson-list{display:grid;gap:8px}
.lesson-list .lesson-row{margin:0;border-radius:2px;border-color:#d4d0c8;background:#fff;text-align:left;display:grid;grid-template-columns:46px minmax(0,1fr) 24px;gap:14px;align-items:center;padding:15px 16px;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.lesson-list .lesson-row:hover{transform:translateX(4px);background:#fffdf8;border-color:#96745c}
.lesson-list .lesson-row:disabled{cursor:not-allowed;transform:none;background:#f3f1ec;color:#85857e}
.lesson-number{font-size:11px;font-weight:800;color:#8f6046}
.lesson-row strong,.lesson-row small{display:block}
.lesson-row strong{font-size:16px;line-height:1.35}
.lesson-row small{font-size:12px;color:#6d716a;margin-top:3px;font-weight:500}
.lesson-arrow{font-size:18px;color:#8f6046;justify-self:end}
.lesson-arrow.locked{color:#85857e}
.lesson-breadcrumb{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.back-to-course{border:0;border-radius:0;background:transparent;padding:0;color:#174b40;font-weight:750;border-bottom:1px solid currentColor}
.back-to-course:hover{background:transparent;color:#8f6046}
.lesson-breadcrumb span{font-size:12px;color:var(--muted)}
.lesson-title{font-size:clamp(34px,4vw,56px);letter-spacing:-.055em;margin-bottom:28px;max-width:900px}
.video-demo{aspect-ratio:16/9;min-height:0;position:relative;overflow:hidden;display:flex;align-items:flex-end;justify-content:space-between;padding:30px;margin-bottom:22px;border-radius:2px;background-color:var(--course-ink);background-size:cover;background-position:center;color:var(--course-cream);isolation:isolate}
.video-demo:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,15,14,.88),rgba(15,15,14,.38));z-index:-1}
.video-demo-content{max-width:620px}
.video-demo h2{font-size:clamp(27px,3vw,42px);letter-spacing:-.04em;margin:10px 0 12px}
.video-demo p{max-width:570px;color:#e2ded5;margin-bottom:20px}
.video-demo-controls{display:grid;grid-template-columns:18px minmax(120px,1fr) auto;gap:10px;align-items:center;max-width:520px;margin:0 0 20px;color:#e7e2d9;font-size:11px;letter-spacing:.02em}
.demo-play-symbol{font-size:10px;color:var(--course-amber)}
.demo-timeline{height:4px;background:#ffffff54;display:block;position:relative}
.demo-timeline i{position:absolute;left:0;top:-3px;width:10px;height:10px;border-radius:50%;background:var(--course-amber)}
.video-demo-button{background:var(--course-amber);border-color:var(--course-amber);color:#1e1d1b}
.video-demo-button:hover{background:#f1bb91;border-color:#f1bb91}
.video-play{width:70px;height:70px;border-radius:50%;border:1px solid #ffffffa8;display:grid;place-items:center;background:#ffffff20;font-size:25px;padding-left:4px;flex:none}
.lesson-video{padding:0;overflow:hidden;background:#111;border-radius:2px}
.lesson-video video{display:block;width:100%;height:auto;max-height:none;aspect-ratio:16/9;object-fit:contain;background:#111;border-radius:0}
.lesson-video small{display:block;padding:10px 14px;color:#f0ebe2;background:#181716;font-size:10px;opacity:.68}
.course-calendar{background:#f0ebe2;padding:28px;margin-bottom:32px;border-radius:2px}
.section-heading{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:26px}
.section-heading h2{font-size:clamp(27px,3vw,40px);letter-spacing:-.045em;margin:6px 0 0}
.next-event{border-left:3px solid var(--course-amber);padding:12px 16px;margin-bottom:30px;background:#fffaf1}
.next-event span,.next-event strong{display:block}
.next-event span{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:#785942;font-weight:700;margin-bottom:5px}
.next-event strong{font-size:16px}
.next-event p{margin:5px 0 0;color:#5f625c}
.calendar-month{margin:34px 0}
.calendar-month h2{font-size:25px;margin-bottom:14px;text-transform:capitalize}
.calendar-weekdays,.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr))}
.calendar-weekdays{padding:0 1px;margin-bottom:4px}
.calendar-weekdays span{padding:7px 9px;font-size:11px;color:#72736d;text-transform:uppercase;letter-spacing:.08em}
.calendar-grid{border-top:1px solid #c7c0b4;border-left:1px solid #c7c0b4}
.calendar-day{min-height:110px;background:#fbfaf5;border-right:1px solid #c7c0b4;border-bottom:1px solid #c7c0b4;padding:8px;overflow:hidden}
.calendar-day.blank{background:#e7e2d9}
.calendar-day time{display:block;font-size:12px;color:#696b65;margin-bottom:6px}
.calendar-day.has-event{background:#fffdf8}
.calendar-event{border-left:2px solid var(--course-amber);padding:3px 0 3px 6px;margin:4px 0;font-size:10px;line-height:1.3}
.calendar-event strong,.calendar-event span{display:block}
.calendar-event strong{color:#77533b}
.course-agenda{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:30px}
.course-agenda .card{height:100%;margin:0;border-radius:2px;background:white}
.course-agenda .card h2{font-size:20px}
@media(max-width:720px){.main{padding:24px 16px}.course-hero{aspect-ratio:16/9;min-height:0;padding:16px;margin:0 -1px 24px}.course-hero-back{top:12px;left:12px;padding:7px 9px;font-size:12px}.course-hero .row{margin-bottom:10px}.course-hero h1{font-size:clamp(30px,10vw,40px);margin-bottom:8px}.course-hero p{display:none}.course-hero-meta{gap:8px;font-size:11px}.course-hero-meta span{padding-left:8px}.course-hero-meta span:last-child{display:none}.course-tabs{gap:15px;margin-bottom:26px;overflow:auto}.module-route{padding:24px 0}.module-route-heading{grid-template-columns:42px minmax(0,1fr);gap:12px}.module-route h2{font-size:27px}.lesson-list .lesson-row{grid-template-columns:30px minmax(0,1fr) 18px;padding:14px 12px}.video-demo{aspect-ratio:16/9;min-height:0;padding:16px}.video-demo .eyebrow{font-size:8px}.video-demo h2{max-width:78%;font-size:clamp(19px,6vw,26px);line-height:1.08;margin:7px 0 10px}.video-demo p{display:none}.video-demo-controls{max-width:78%;margin-bottom:10px;font-size:9px}.video-demo-button{padding:7px 9px;font-size:12px}.video-play{width:54px;height:54px;font-size:18px}.course-calendar{padding:20px 12px}.section-heading{display:block}.section-heading .muted{margin-top:10px}.calendar-day{min-height:82px;padding:5px}.calendar-weekdays span{padding:5px 3px;font-size:9px}.calendar-event{font-size:8px;padding-left:3px}.calendar-event span{display:none}.course-agenda{grid-template-columns:1fr}.lesson-breadcrumb{align-items:flex-start;flex-direction:column;gap:6px}}