:root{--bg-ivory:#fdfbf3;--bg-champagne:#f8f1d7;--ink:#16130c;--ink-soft:#4a4232;--gold:#a8841c;--gold-dark:#6e4f0a;--gold-mid:#c9a227;--gold-light:#d4af37;--gold-bright:#e8c766;--gold-deep:#8c6d1f;--frame:1380px;--radius:12px;--shadow:0 18px 38px rgba(0,0,0,0.12);--font-body:"Be Vietnam Pro","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}*{box-sizing:border-box}html{font-size:16px}body{margin:0;font-family:var(--font-body);font-size:1rem;line-height:1.7;color:var(--ink);background:var(--bg-ivory)}p{text-align:justify;text-justify:inter-word}h1,h2,h3{line-height:1.3;margin:0 0 .5em}a{color:var(--gold-dark)}button,input,select{font:inherit}button{min-height:44px;cursor:pointer}.wrap{max-width:var(--frame);margin-inline:auto;padding-inline:clamp(18px,4.5vw,32px)}.gold-title{background:linear-gradient(135deg,#6e4f0a,#a67c00 38%,#c9a227 62%,#d4af37 80%,#e8c766 90%,#8c6d1f);-webkit-background-clip:text;background-clip:text;color:transparent}.rule{width:64px;height:3px;background:var(--gold-mid);border:0;margin:1rem 0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.7rem 1.4rem;border-radius:8px;border:2px solid var(--gold);background:linear-gradient(135deg,#c9a227,#d4af37);color:var(--ink);font-weight:700;text-decoration:none}.btn-ghost{background:transparent;color:var(--gold-dark)}.btn:disabled{opacity:.6;cursor:not-allowed}.card{background:#fff;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);padding:1.25rem;box-shadow:0 6px 18px rgba(0,0,0,.08);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}@media (hover:hover){.card:hover{transform:translateY(-3px);border-color:rgba(212,175,55,.6);box-shadow:var(--shadow)}}.site-header{background:var(--bg-ivory);border-bottom:1px solid rgba(168,132,28,.35);position:-webkit-sticky;position:sticky;top:0;z-index:10}.site-header .wrap{display:flex;align-items:center;gap:1rem;min-height:68px}.brand{font-weight:900;letter-spacing:.08em;text-decoration:none;color:var(--ink);font-size:1.25rem}.brand span{color:var(--gold)}.main-nav{display:flex;gap:.25rem;margin-left:auto;flex-wrap:wrap}.main-nav a{padding:.6rem .8rem;text-decoration:none;color:var(--ink);font-weight:600;min-height:44px;display:inline-flex;align-items:center}.main-nav a:hover{color:var(--gold-dark)}.hero{text-align:center;padding:3rem 0 2rem}.hero h1{font-size:clamp(1.75rem,4vw,2.8rem)}.hero .lead{max-width:760px;margin:0 auto}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:1.5rem;gap:1.5rem}@media (max-width:1020px){.course-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:700px){.course-grid{grid-template-columns:1fr}}.course-num{font-weight:900;color:var(--gold)}.pill{display:inline-block;font-size:.875rem;font-weight:700;color:var(--gold-dark);border:1px solid var(--gold);border-radius:999px;padding:.15rem .7rem}.tabs{display:flex;gap:.5rem;flex-wrap:wrap}.tab{min-height:44px;padding:.5rem 1rem;border-radius:999px;border:1px solid var(--gold);background:#fff;font-weight:600}.tab[aria-pressed=true]{background:linear-gradient(135deg,#c9a227,#d4af37)}.search{width:100%;min-height:50px;font-size:1rem;padding:.6rem 1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff}.notice{border:1px solid rgba(168,132,28,.6);background:#fff;border-radius:var(--radius);padding:1rem 1.25rem}.notice.error{border-color:#b3261e}.notice p{margin:.25rem 0}.site-footer{border-top:1px solid rgba(168,132,28,.35);margin-top:3rem;padding:2rem 0;background:var(--bg-champagne)}.muted{color:var(--ink-soft);font-size:.95rem}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.field{margin-bottom:1rem}.field label{display:block;font-weight:700;margin-bottom:.35rem}.field input,.field select,.field textarea{width:100%;min-height:50px;padding:.7rem .9rem;font:inherit;font-size:1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;color:var(--ink)}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}.field input:disabled,.field select:disabled,.field textarea:disabled{opacity:.6}.field-error{color:#b3261e;font-weight:600;margin:.35rem 0 0}.hint{margin:.35rem 0 0}.form-note,.hint{color:var(--ink-soft);font-size:.95rem}.form-status{margin-top:.75rem}.consult-form{max-width:640px;margin-top:1.5rem}.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.notice.success{border-color:var(--gold);background:var(--bg-champagne)}.auth-card{max-width:560px;margin:2rem auto}.auth-form{margin-top:1rem}.account-nav{gap:.75rem;margin-left:auto}.account-nav,.account-nav a{display:inline-flex;align-items:center}.account-nav a{font-weight:600;text-decoration:none;color:var(--ink);min-height:44px}.account-nav a:hover{color:var(--gold-dark)}.newsletter-form{margin-bottom:1.5rem}.newsletter-form label{display:block;font-weight:700;margin-bottom:.35rem}.newsletter-row{display:flex;gap:.5rem;flex-wrap:wrap}.newsletter-row input{flex:1 1 240px;min-height:50px;padding:.6rem 1rem;font:inherit;font-size:1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;color:var(--ink)}.dashboard-nav{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0 1.5rem}.dashboard-nav a{min-height:44px;padding:.6rem 1rem;display:inline-flex;align-items:center;border:1px solid var(--gold);border-radius:999px;background:#fff;font-weight:600;text-decoration:none;color:var(--ink)}.dashboard-nav a[aria-current=page]{background:linear-gradient(135deg,#c9a227,#d4af37);color:var(--ink)}.stat-grid{display:grid;grid-template-columns:repeat(5,1fr);grid-gap:1rem;gap:1rem}@media (max-width:1020px){.stat-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:700px){.stat-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:#fff;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);padding:1rem 1.25rem;text-align:center}.stat-card p{margin:.25rem 0}.stat-num{font-size:1.75rem;font-weight:900;color:var(--gold-dark)}.progress-track{height:12px;border-radius:999px;background:var(--bg-champagne);border:1px solid rgba(168,132,28,.55);overflow:hidden}.progress-fill{height:100%;background:linear-gradient(135deg,#c9a227,#d4af37);border-radius:999px}.avatar{border-radius:50%;object-fit:cover;border:2px solid var(--gold)}.avatar-lg{width:96px;height:96px;display:block;margin-bottom:1rem}.dashboard-list{list-style:none;margin:0;padding:0;display:grid;grid-gap:1rem;gap:1rem}.dashboard-list .list-row{background:#fff;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);padding:1rem 1.25rem}.dashboard-list .list-row.unread{border-color:var(--gold);background:var(--bg-champagne)}.dashboard-list .list-row p{margin:.25rem 0}.module-list{margin:.75rem 0 0;padding-left:1.25rem}.module-list li{margin:.25rem 0}.auth-links{display:flex;flex-direction:column;gap:.5rem;margin-top:1rem}.auth-links a{min-height:44px;display:inline-flex;align-items:center}@media (max-width:900px){.site-header .wrap{flex-wrap:wrap;row-gap:.25rem;padding-bottom:.75rem}.main-nav{order:3;flex-basis:100%;margin-left:0}.site-header .btn{order:4;flex-basis:100%}.account-nav{flex-wrap:wrap}}.curriculum{margin-top:2rem}.curriculum-list{display:grid;grid-gap:1rem;gap:1rem}.curriculum-module summary{cursor:pointer;min-height:44px;font-size:1rem}.curriculum-module summary strong{color:var(--gold-dark)}.lesson-list{list-style:none;margin:.75rem 0 0;padding:0;display:grid;grid-gap:.25rem;gap:.25rem}.lesson-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;padding:.5rem 0;border-bottom:1px solid rgba(168,132,28,.25)}.lesson-row:last-child{border-bottom:0}.lesson-row a{min-height:44px;display:inline-flex;align-items:center;font-weight:600;text-decoration:none;color:var(--ink)}.lesson-row a:hover{color:var(--gold-dark);text-decoration:underline}.lesson-row.current{background:var(--bg-champagne);border-radius:8px;padding-inline:.5rem}.lesson-meta{display:inline-flex;align-items:center;gap:.5rem;flex-wrap:wrap}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;grid-gap:2rem;gap:2rem;align-items:start;margin-top:1rem}.lesson-content{margin-top:1.5rem}.video-embed{position:relative;width:100%;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden;border:1px solid rgba(168,132,28,.55)}.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}video.video-embed{display:block}.pdf-viewer{width:100%;height:70vh;min-height:480px;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);background:#fff}.audio-player{width:100%;min-height:54px}.lesson-image{width:100%;height:auto;border-radius:var(--radius);border:1px solid rgba(168,132,28,.55)}.resources{margin-top:2rem}.resource-list{list-style:none;margin:0;padding:0;display:grid;grid-gap:.75rem;gap:.75rem}.resource-row{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);padding:.75rem 1rem;background:#fff}.lesson-notes{margin-top:2rem}.note-textarea{width:100%;font:inherit;font-size:1rem;line-height:1.7;padding:.75rem 1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;resize:vertical}.note-textarea:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}.lesson-actions{margin-top:2rem;display:grid;grid-gap:1.5rem;gap:1.5rem}.lesson-nav{display:flex;justify-content:space-between;gap:.75rem;flex-wrap:wrap}.lesson-sidebar{position:-webkit-sticky;position:sticky;top:84px}.lesson-sidebar .sidebar-module{border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);padding:.75rem 1rem;margin-bottom:.75rem;background:#fff}.lesson-sidebar .sidebar-module summary{cursor:pointer;min-height:44px;font-weight:700}@media (max-width:900px){.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{position:static}.pdf-viewer{height:60vh;min-height:380px}}.lesson-player{margin-top:1.5rem}.lesson-player h2{font-size:1.5rem}.video-wrap{position:relative;width:100%;aspect-ratio:16/9;margin:1rem 0;background:#000;border-radius:var(--radius);overflow:hidden}.video-wrap iframe,.video-wrap>div{position:absolute;inset:0}.video-wrap iframe{width:100%;height:100%;border:0}.video-wrap>p{color:#fff;text-align:center;padding-top:20%}.admin-nav{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;margin:1rem 0 .5rem}.admin-nav a{font-weight:700;min-height:44px;display:inline-flex;align-items:center}.admin-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid rgba(168,132,28,.55);border-radius:var(--radius);overflow:hidden}.admin-table td,.admin-table th{text-align:left;padding:.75rem 1rem;border-bottom:1px solid rgba(168,132,28,.25);vertical-align:top}.admin-table th{background:var(--bg-champagne);color:var(--gold-dark)}.admin-table tr:last-child td{border-bottom:0}.admin-table p{text-align:left}.btn-small{min-height:44px;padding:.4rem .9rem;font-size:.95rem}.btn-danger{border-color:#b3261e;background:#fff;color:#b3261e}.btn-danger:hover{background:#fdf0ef}.admin-module{margin-bottom:1rem}.admin-module h3{margin-bottom:.5rem}.admin-list{list-style:none;margin:.5rem 0 0;padding:0;display:grid;grid-gap:.5rem;gap:.5rem}.admin-lesson{border-top:1px solid rgba(168,132,28,.25);padding-top:.75rem}.admin-lesson p{margin:.35rem 0}.admin-inline-form{border:1px dashed rgba(168,132,28,.6);border-radius:var(--radius);padding:1rem;margin:.75rem 0;background:var(--bg-ivory)}.admin-move{display:inline-flex;gap:.25rem}.field textarea{width:100%;min-height:80px;padding:.7rem .9rem;font:inherit;font-size:1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;color:var(--ink)}.field textarea:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}@media (max-width:700px){.admin-table{display:block;overflow-x:auto}}.assignment-form{margin-top:1.5rem}.assignment-form h2{font-size:1.5rem}.file-list{list-style:none;margin:.75rem 0 0;padding:0;display:grid;grid-gap:.5rem;gap:.5rem}.file-list li{overflow-wrap:anywhere}.file-list a{min-height:44px;display:inline-flex;align-items:center;font-weight:600}.grade-form{margin-top:1rem;border-top:1px solid rgba(168,132,28,.25);padding-top:1rem}.grade-form .field input[type=number]{width:100%;min-height:50px;padding:.7rem .9rem;font:inherit;font-size:1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;color:var(--ink)}.grade-form .field input[type=number]:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}.dashboard-list details{margin-top:.75rem}.dashboard-list details summary{cursor:pointer;min-height:44px;font-weight:700;color:var(--gold-dark)}.dashboard-list details summary:focus-visible{outline:2px solid var(--gold);outline-offset:2px}.field input[type=file]{width:100%;min-height:50px;padding:.7rem .9rem;font:inherit;font-size:1rem;border:1px solid rgba(168,132,28,.6);border-radius:8px;background:#fff;color:var(--ink)}