:root{--aci-accent:#c8963e;--aci-ink:#0f2a43;--aci-mute:#5a6d80;--aci-line:#dbe3ea;--aci-soft:#f3f6f9;--aci-ok:#1f8a63;--aci-bad:#b3382c}
.aci{color:var(--aci-ink);font-size:16px;line-height:1.65;max-width:1100px;margin:0 auto}
.aci *,.aci *::before,.aci *::after{box-sizing:border-box}
.aci a{color:var(--aci-ink)}
.aci-h{margin:36px 0 14px;font-size:1.5rem}
.aci-small{font-size:.875rem;color:var(--aci-mute);margin:4px 0 10px}
.aci-empty{color:var(--aci-mute)}
.aci-crumb{margin:0 0 14px;font-size:.9rem}
.aci-crumb a{text-decoration:none;color:var(--aci-mute)}
.aci-crumb a:hover{color:var(--aci-ink)}

/* Buttons */
.aci-btn{display:inline-block;background:var(--aci-accent);color:#1b1200!important;border:2px solid var(--aci-accent);padding:11px 22px;border-radius:10px;font:600 1rem/1.2 inherit;text-decoration:none!important;cursor:pointer;transition:filter .15s}
.aci-btn:hover{filter:brightness(.93)}
.aci-btn:focus-visible,.aci a:focus-visible,.aci input:focus-visible{outline:3px solid var(--aci-ink);outline-offset:2px}
.aci-btn.aci-ghost{background:transparent;color:var(--aci-ink)!important;border-color:var(--aci-ink)}
.aci-inline{display:inline;margin:0}

/* Notices */
.aci-note{padding:12px 16px;border-radius:10px;margin:0 0 18px;border-left:5px solid}
.aci-note.aci-ok{background:#e6f5ee;border-color:var(--aci-ok)}
.aci-note.aci-bad{background:#fbeae8;border-color:var(--aci-bad)}

/* Facts row on course page */
.aci-facts{list-style:none;margin:0 0 26px;padding:14px 20px;display:flex;flex-wrap:wrap;gap:10px 34px;background:var(--aci-ink);color:#fff;border-radius:14px}
.aci-facts li{display:flex;flex-direction:column;font-weight:600}
.aci-facts span{font-size:.78rem;font-weight:400;color:#b9c7d6}

/* Two columns */
.aci-cols{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.aci-side{position:sticky;top:24px}
.aci-box{background:#fff;border:1px solid var(--aci-line);border-radius:14px;padding:22px;box-shadow:0 8px 24px rgba(15,42,67,.08)}
.aci-box h3{margin:0 0 10px;font-size:1.2rem}
.aci-box .aci-btn{margin:6px 6px 0 0}
@media(max-width:820px){.aci-cols{grid-template-columns:1fr}.aci-side{position:static}}

/* Progress */
.aci-bar{height:10px;background:var(--aci-soft);border-radius:99px;overflow:hidden;margin:8px 0}
.aci-bar i{display:block;height:100%;background:var(--aci-ok);border-radius:99px;transition:width .4s}

/* Curriculum */
.aci-list{list-style:none;margin:0;padding:0;border:1px solid var(--aci-line);border-radius:14px;overflow:hidden;background:#fff}
.aci-list li{display:flex;align-items:center;gap:12px;padding:14px 18px;border-top:1px solid var(--aci-line)}
.aci-list li:first-child{border-top:0}
.aci-list a{font-weight:600;text-decoration:none}
.aci-list a:hover{text-decoration:underline}
.aci-list em{margin-left:auto;font-style:normal;font-size:.85rem;color:var(--aci-mute);white-space:nowrap}
.aci-lock{color:var(--aci-mute)}
.aci-tick,.aci-dot{flex:none;width:24px;height:24px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem}
.aci-tick{background:var(--aci-ok);color:#fff}
.aci-dot{border:2px solid var(--aci-line)}

/* Lesson and quiz */
.aci-video{position:relative;margin:0 0 22px;border-radius:14px;overflow:hidden;background:#000}
.aci-video iframe,.aci-video video{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0}
.aci-body{margin-bottom:24px}
.aci-done{color:var(--aci-ok);font-weight:600}
.aci-nav{display:flex;justify-content:space-between;margin-top:34px;padding-top:18px;border-top:1px solid var(--aci-line)}
.aci-nav a{font-weight:600;text-decoration:none}
.aci-quiz fieldset{border:1px solid var(--aci-line);border-radius:12px;padding:16px 18px;margin:0 0 16px;background:#fff}
.aci-quiz legend{font-weight:700;padding:0 8px}
.aci-quiz small{display:block;color:var(--aci-mute);margin-bottom:6px}
.aci-quiz label{display:flex;gap:10px;align-items:flex-start;padding:7px 8px;border-radius:8px;cursor:pointer}
.aci-quiz label:hover{background:var(--aci-soft)}
.aci-quiz input{margin-top:6px}

/* Course grid */
.aci-grid{display:grid;grid-template-columns:repeat(var(--cols,3),minmax(0,1fr));gap:24px}
@media(max-width:900px){.aci-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.aci-grid{grid-template-columns:1fr}}
.aci-card{background:#fff;border:1px solid var(--aci-line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.aci-card:hover{box-shadow:0 14px 30px rgba(15,42,67,.12);transform:translateY(-3px)}
.aci-thumb{display:block;aspect-ratio:16/9;background:linear-gradient(135deg,var(--aci-ink),#27506f) center/cover no-repeat}
.aci-card-b{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.aci-card-b h3{margin:0 0 8px;font-size:1.15rem;line-height:1.3}
.aci-card-b h3 a{text-decoration:none}
.aci-card-b p{margin:0 0 14px}
.aci-card-b .aci-btn{margin-top:auto;align-self:flex-start}

/* Verify */
.aci-verify{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.aci-verify input{flex:1 1 220px;padding:11px 14px;border:1px solid var(--aci-line);border-radius:10px;font-size:1rem}

@media(prefers-reduced-motion:reduce){.aci *{transition:none!important}}