:root{--bg:#f4f7fb;--ink:#182230;--brand:#1c64f2;--dark:#0f172a;--line:#dbe3ef;--ok:#0f9d58}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--ink)}a{color:var(--brand);text-decoration:none}.topbar{height:70px;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 6%;box-shadow:0 2px 12px #0001}.brand,.logo{font-weight:800}.hero{min-height:520px;display:grid;place-items:center;padding:50px 8%;text-align:center;background:linear-gradient(135deg,#eef4ff,#fff)}.hero h1{font-size:clamp(38px,6vw,72px);max-width:1000px;margin:18px auto}.hero p{font-size:20px;max-width:780px;margin:0 auto 28px}.badge{padding:8px 14px;border-radius:999px;background:#e6efff;color:#164db8}.btn{display:inline-block;border:0;border-radius:10px;background:var(--brand);color:#fff;padding:12px 18px;cursor:pointer}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.small{padding:7px 10px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:50px 6%}.card,.panel,.stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 8px 25px #1e293b0d}footer{text-align:center;padding:30px}.auth{min-height:100vh;display:grid;place-items:center}.authbox{width:min(420px,92vw);background:#fff;padding:34px;border-radius:20px;box-shadow:0 20px 60px #0002}.authbox label{display:block;margin:16px 0}.authbox input,.formgrid input,.formgrid select,.formgrid textarea{width:100%;padding:11px;border:1px solid var(--line);border-radius:9px;margin-top:6px}.alert{background:#fee2e2;padding:10px;border-radius:8px}.success{background:#dcfce7;padding:10px 14px;border-radius:8px;margin-bottom:14px}.sidebar{position:fixed;left:0;top:0;width:240px;height:100vh;background:var(--dark);padding:22px 14px;color:#fff;overflow:auto}.sidebar .logo{padding:8px 10px 22px;font-size:20px}.sidebar a{display:block;color:#cbd5e1;padding:11px 12px;border-radius:9px;margin:3px 0}.sidebar a:hover,.sidebar a.active{background:#1e293b;color:#fff}.main{margin-left:240px;padding:30px}.pagehead{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.statgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:20px}.stat b{display:block;font-size:34px}.stat span{color:#64748b}.formgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:18px}.formgrid textarea{min-height:110px}.formgrid .btn{align-self:end}.tablewrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:11px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}.inline{display:inline}.link{background:none;border:0;color:var(--brand);cursor:pointer}.danger{color:#dc2626}@media(max-width:900px){.cards,.statgrid{grid-template-columns:1fr 1fr}.sidebar{position:static;width:100%;height:auto}.main{margin:0}.formgrid{grid-template-columns:1fr}}@media(max-width:560px){.cards,.statgrid{grid-template-columns:1fr}}
.langs{padding:18px 10px}.langs a{display:inline-block;padding:5px 7px;border:1px solid #334155}
.profile-mini{display:flex!important;gap:10px;align-items:center;background:#172033;margin-bottom:10px!important}.profile-mini img{width:42px;height:42px;border-radius:50%;object-fit:cover}.profile-mini span{display:flex;flex-direction:column}.profile-mini small,.logo small{font-size:11px;color:#94a3b8}.profile-layout{display:grid;grid-template-columns:280px 1fr;gap:18px}.profile-card{text-align:center}.avatar-lg{width:160px;height:160px;border-radius:50%;object-fit:cover;border:6px solid #eef2ff}.full{grid-column:1/-1}.message{padding:16px 0;border-bottom:1px solid var(--line)}.message small{float:right;color:#64748b}.report-card{max-width:900px;margin:auto}.report-card h2,.report-card h3{text-align:center}@media(max-width:900px){.profile-layout{grid-template-columns:1fr}}@media print{.sidebar,.pagehead .btn,form{display:none!important}.main{margin:0;padding:10px}.panel{box-shadow:none;border:none}}

/* v1.2 public programs and per-level themes */
.public-home{background:var(--level-bg,#f7f8fc);color:var(--level-text,#182230)}.public-topbar{position:sticky;top:0;z-index:20}.public-actions{display:flex;gap:10px;align-items:center}.level-menu{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-bottom:1px solid var(--line);position:sticky;top:70px;z-index:19}.level-menu a{display:flex;justify-content:center;align-items:center;gap:9px;padding:17px 12px;font-weight:800;color:#475569;border-bottom:4px solid transparent}.level-menu a:hover,.level-menu a.active{color:var(--level-primary);background:color-mix(in srgb,var(--level-primary) 7%,white);border-bottom-color:var(--level-primary)}.level-menu span{font-size:22px}.level-hero{min-height:500px;display:grid;place-items:center;text-align:center;padding:70px 7%;background:radial-gradient(circle at 15% 15%,var(--level-secondary) 0,transparent 35%),linear-gradient(135deg,var(--level-bg),#fff)}.level-hero-inner{max-width:900px}.level-chip{display:inline-block;background:var(--level-secondary);color:var(--level-primary);padding:9px 15px;border-radius:999px;font-weight:800}.level-hero h1,.program-detail-hero h1{font-size:clamp(38px,6vw,72px);line-height:1.05;margin:20px 0;color:var(--level-text)}.level-hero p{font-size:20px;line-height:1.7;max-width:760px;margin:0 auto 28px}.level-btn{background:var(--level-primary)}.public-main{padding:65px 6%;max-width:1400px;margin:auto}.section-title{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}.section-title h2{font-size:38px;margin:7px 0}.section-title p{max-width:560px;color:#64748b}.eyebrow{font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--level-primary)}.program-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.program-card{background:#fff;border:1px solid color-mix(in srgb,var(--level-primary) 18%,#dbe3ef);border-radius:22px;padding:26px;box-shadow:0 14px 35px #0f172a0d;transition:.25s}.program-card:hover{transform:translateY(-5px);box-shadow:0 20px 45px #0f172a16}.program-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:17px;background:var(--level-secondary);font-size:28px}.program-meta{margin-top:20px;color:var(--level-primary);font-weight:800;font-size:13px;text-transform:uppercase}.program-card h3{font-size:24px;margin:8px 0}.program-card p{color:#64748b;line-height:1.6}.program-link{font-weight:800;color:var(--level-primary)}.empty-state{text-align:center;background:#fff;border:1px dashed var(--line);border-radius:24px;padding:55px}.empty-icon{font-size:55px}.public-cta{margin:20px 6% 60px;padding:38px;display:flex;align-items:center;justify-content:space-between;gap:30px;border-radius:28px;background:var(--level-secondary)}.public-cta h2{margin:0 0 8px}.program-detail-hero{padding:70px 7%;text-align:center;background:linear-gradient(135deg,var(--level-secondary),var(--level-bg))}.program-detail-hero p{max-width:800px;margin:auto;font-size:20px;line-height:1.7}.program-detail{max-width:1000px;margin:40px auto;padding:0 20px}.content-prose{line-height:1.8;font-size:17px;margin-bottom:20px}.theme-admin-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.theme-editor label{display:block;margin:10px 0}.theme-editor input,.theme-editor textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:9px;margin-top:5px}.theme-editor textarea{min-height:90px}.theme-preview{background:linear-gradient(135deg,var(--s),var(--b));border-left:8px solid var(--p);border-radius:16px;padding:22px;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:center;margin-bottom:18px}.theme-preview span{font-size:38px;grid-row:1/3}.theme-preview strong{font-size:22px}.theme-preview small{color:#64748b}@media(max-width:900px){.level-menu{top:0;grid-template-columns:1fr 1fr}.program-grid,.theme-admin-grid{grid-template-columns:1fr 1fr}.section-title,.public-cta{align-items:flex-start;flex-direction:column}.public-topbar{position:static}}@media(max-width:600px){.level-menu,.program-grid,.theme-admin-grid{grid-template-columns:1fr}.public-actions{flex-wrap:wrap}.level-hero{min-height:420px}.section-title h2{font-size:30px}}


/* v1.3 public curriculum hierarchy */
.class-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.class-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;background:#fff;border:1px solid color-mix(in srgb,var(--level-primary) 18%,#dbe3ef);border-radius:22px;padding:24px;color:var(--level-text);box-shadow:0 12px 30px #0f172a0c;transition:.25s}.class-card:hover,.subject-card:hover,.chapter-card:hover,.lesson-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px #0f172a16}.class-icon{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;background:var(--level-secondary);font-size:30px}.class-card span,.subject-card small,.chapter-card small,.lesson-card small{color:var(--level-primary);font-weight:800}.class-card h3{font-size:25px;margin:4px 0}.class-card p{margin:4px 0;color:#64748b}.class-card>b,.subject-card>strong,.chapter-card>strong,.lesson-card>strong{font-size:28px;color:var(--level-primary)}.legacy-programs{margin-top:70px}.curriculum-hero,.subject-hero,.chapter-hero,.lesson-hero{text-align:center;padding:60px 6%;background:linear-gradient(135deg,var(--level-secondary),var(--level-bg))}.curriculum-hero h1,.subject-hero h1,.chapter-hero h1,.lesson-hero h1{font-size:clamp(36px,5vw,62px);margin:16px 0;color:var(--level-text)}.curriculum-hero p,.subject-hero p,.chapter-hero p,.lesson-hero p{max-width:780px;margin:0 auto 10px;font-size:18px;line-height:1.7}.breadcrumb{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:28px;color:#64748b}.breadcrumb a{color:var(--level-primary);font-weight:700}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.subject-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px;color:var(--level-text);transition:.25s}.subject-code{display:inline-grid;place-items:center;min-width:52px;height:52px;padding:0 12px;border-radius:14px;background:var(--level-secondary);color:var(--level-primary);font-weight:900}.subject-code.large{font-size:24px;margin:auto}.subject-card h2{font-size:24px}.subject-card p{color:#64748b;line-height:1.6;min-height:50px}.subject-card>strong{position:absolute;right:22px;bottom:18px}.chapter-list,.lesson-list{display:grid;gap:16px}.chapter-card{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;color:var(--level-text);transition:.25s}.chapter-num{width:58px;height:58px;display:grid;place-items:center;border-radius:17px;background:var(--level-primary);color:#fff;font-size:20px;font-weight:900}.chapter-card h2,.lesson-card h2{margin:5px 0 8px}.chapter-card p,.lesson-card p{margin:0 0 8px;color:#64748b}.lesson-card{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;padding-right:22px;color:var(--level-text);transition:.25s}.lesson-card img,.lesson-placeholder{width:150px;height:120px;object-fit:cover}.lesson-placeholder{display:grid;place-items:center;background:var(--level-secondary);font-size:42px}.lesson-main{max-width:1000px;margin:38px auto 70px;padding:0 22px}.lesson-cover{width:100%;max-height:500px;object-fit:cover;border-radius:24px;margin-bottom:28px}.lesson-content{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px;line-height:1.9;font-size:18px;white-space:normal}.lesson-resources{margin-top:22px;background:var(--level-secondary);border-radius:20px;padding:24px}.resource-btn{display:inline-block;margin:6px 8px 6px 0;padding:11px 16px;background:var(--level-primary);color:#fff;border-radius:10px;font-weight:800}.lesson-hero small{font-weight:800;color:var(--level-primary)}@media(max-width:900px){.class-grid,.subject-grid{grid-template-columns:1fr 1fr}}@media(max-width:650px){.class-grid,.subject-grid{grid-template-columns:1fr}.lesson-card{grid-template-columns:90px 1fr auto}.lesson-card img,.lesson-placeholder{width:90px;height:100px}.chapter-card{grid-template-columns:auto 1fr}.chapter-card>strong{display:none}}