:root{
  --ink:#17302f;--muted:#5c7170;--line:#dde4df;--bg:#f5f7f3;--card:#fff;
  --brand:#047d5d;--brand-2:#03684d;--accent:#f5a21f;--accent-ink:#3a2603;
  --ok:#1f7a4d;--ok-bg:#e6f4ec;--bad:#b3362b;--bad-bg:#fbeae8;--wait:#96690a;--wait-bg:#fdf3d9;
  --r:12px;--shadow:0 1px 2px rgba(15,61,62,.06),0 6px 20px rgba(15,61,62,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Kantumruy Pro","Noto Sans Khmer",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.7;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.45;margin:0 0 .5em;text-wrap:balance}
h1{font-size:1.7rem}h2{font-size:1.25rem;margin-top:1.6em}h3{font-size:1.05rem}
p{margin:0 0 1em}
img{max-width:100%}
code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;background:#eef2ee;padding:.1em .4em;border-radius:5px;word-break:break-all}
hr{border:0;border-top:1px solid var(--line);margin:1.4em 0}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:720px}
.center{text-align:center}
.pad{padding-top:28px;padding-bottom:28px}
.pad-xl{padding-top:72px;padding-bottom:72px}
.muted{color:var(--muted)}.small{font-size:.875rem}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.eyebrow{font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-2)}
.eyebrow.light{color:var(--accent)}
.empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--r);padding:32px;text-align:center;color:var(--muted)}
.note{background:var(--wait-bg);color:#5c4206;border-radius:8px;padding:10px 14px;font-size:.93rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:600;font-size:.95rem;line-height:1.3;padding:10px 18px;border-radius:9px;border:1px solid var(--brand);background:var(--brand);color:#fff;cursor:pointer;text-decoration:none!important;transition:background .15s,transform .05s}
.btn:hover{background:var(--brand-2)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(245,162,31,.75);outline-offset:2px}
.btn-ghost{background:transparent;color:var(--brand)}
.btn-ghost:hover{background:rgba(15,61,62,.07)}
.btn-accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{background:#e8930c}
.btn-danger{background:transparent;border-color:#e2b5b0;color:var(--bad)}
.btn-danger:hover{background:var(--bad-bg)}
.btn-sm{padding:6px 12px;font-size:.85rem;border-radius:7px}
.btn-block{width:100%;margin-top:10px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn-row.center{justify-content:center}
.linkish{background:none;border:0;padding:0;font:inherit;color:var(--brand-2);cursor:pointer;text-decoration:underline}
.linkish.danger{color:var(--bad);font-size:.85rem}

/* Header */
.top{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.top-in{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none!important;white-space:nowrap}
.brand img{height:34px}
.brand-logo{height:44px!important;width:auto}
.foot-logo{height:52px;width:auto;display:block;margin-bottom:6px}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--brand);color:var(--accent);display:grid;place-items:center;font-weight:700}
.nav{display:flex;gap:4px;flex:1;min-width:0;overflow:hidden}
.nav a{padding:6px 12px;border-radius:8px;color:var(--ink);font-weight:500;font-size:.95rem;white-space:nowrap}
.nav a:hover,.nav a.on{background:#eaf0ec;text-decoration:none}
.top-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.lang{font-size:.8rem;font-weight:600;border:1px solid var(--line);border-radius:7px;padding:4px 9px;color:var(--ink)}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:700;text-decoration:none!important}

.flash{margin:14px 0 0;padding:11px 15px;border-radius:9px;font-size:.95rem;border:1px solid}
.flash-success{background:var(--ok-bg);border-color:#bfe0cc;color:#14573a}
.flash-error{background:var(--bad-bg);border-color:#efc4bf;color:#7d241c}
.flash-info{background:#e8f0f6;border-color:#c4d6e6;color:#1e4563}

/* Footer + mobile tabs */
.foot{background:var(--brand);color:#cfe0dc;margin-top:48px;padding:32px 0 20px}
.foot strong{color:#fff}
.foot p{margin:.2em 0 0;font-size:.9rem}
.foot-in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-links{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.foot a{color:#fff;font-size:.92rem}
.copy{margin-top:22px;font-size:.8rem;opacity:.7}
.tabs{display:none}

/* Hero */
.hero{background:var(--brand);color:#fff;padding:52px 0 56px;background-image:radial-gradient(circle at 85% 10%,rgba(245,162,31,.20),transparent 42%)}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(1.7rem,3.6vw,2.6rem);margin:.25em 0 .4em}
.lead{font-size:1.06rem;color:#d7e6e2;max-width:56ch}
.search{display:flex;gap:8px;margin:22px 0 26px;max-width:520px}
.search input{flex:1;min-width:0}
.hero-stats{display:flex;gap:32px}
.hero-stats b{display:block;font-size:1.6rem;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:.85rem;color:#c5d8d4}
.hero-steps{display:grid;gap:10px}
.step{display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:var(--r);padding:13px 16px}
.step i{flex:none;width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-style:normal;font-weight:700;font-size:.9rem}
.step b{display:block;line-height:1.4}
.step span{font-size:.86rem;color:#c5d8d4}

.cats{display:flex;gap:8px;flex-wrap:wrap}
.cat{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.9rem;color:var(--ink);font-weight:500}
.cat span{color:var(--muted);font-weight:400;margin-left:4px}
.cat:hover{border-color:var(--brand);text-decoration:none}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}
.sec-head h2{margin:0}

/* Cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;color:var(--ink);box-shadow:var(--shadow)}
a.card{text-decoration:none!important;transition:transform .15s,box-shadow .15s}
a.card:hover{transform:translateY(-3px);box-shadow:0 2px 4px rgba(15,61,62,.08),0 14px 30px rgba(15,61,62,.12)}
.thumb{display:block;aspect-ratio:16/9;background:linear-gradient(135deg,#06946e,#035a43);background-size:cover;background-position:center;position:relative}
.thumb.lg{border-radius:var(--r) var(--r) 0 0}
.thumb-letter{position:absolute;inset:0;display:grid;place-items:center;font-size:3rem;font-weight:700;color:rgba(245,162,31,.9)}
.chip{display:inline-block;font-size:.72rem;font-weight:600;padding:2px 9px;border-radius:999px;background:#eaf0ec;color:var(--brand)}
.chip-level{position:absolute;left:10px;top:10px;background:rgba(255,255,255,.93)}
.chip-warn{background:var(--wait-bg);color:var(--wait);margin-top:10px}
.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px;flex:1}
.card-body h3{margin:0;font-size:1.05rem}
.card-body h3 a{color:inherit}
.card-body p{margin:0;font-size:.9rem}
.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:10px;gap:8px}
.price{font-weight:700;color:var(--brand);font-size:1.1rem;font-variant-numeric:tabular-nums}
.price.free{color:var(--ok)}
.price.big{font-size:1.8rem;line-height:1.3}
.progress{height:8px;border-radius:99px;background:#e4eae6;overflow:hidden;margin:8px 0 4px}
.progress i{display:block;height:100%;background:var(--accent);border-radius:99px}

/* Forms */
input,select,textarea{font:inherit;color:inherit;width:100%;padding:10px 12px;border:1px solid #c9d3cd;border-radius:9px;background:#fff;line-height:1.5}
input[type=radio],input[type=checkbox]{width:auto;accent-color:var(--brand);transform:scale(1.15)}
input[type=file]{padding:8px;background:#fafbf9}
textarea{resize:vertical}
textarea.code{font-family:ui-monospace,Menlo,Consolas,"Kantumruy Pro",monospace;font-size:.9rem}
label{display:block;font-weight:500;font-size:.92rem;margin-bottom:14px}
label>input,label>select,label>textarea{margin-top:5px;font-weight:400}
label small{display:block;font-weight:400;color:var(--muted);margin-top:4px}
label.check{display:flex;align-items:center;gap:9px;font-weight:400}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0 16px}
.filters{display:flex;gap:8px;margin:14px 0 20px;flex-wrap:wrap}
.filters input{flex:1;min-width:180px}
.filters select{width:auto}
.inline-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.inline-form input:not([type=checkbox]),.inline-form select{width:auto;flex:1;min-width:120px;padding:7px 10px}
.inline-form label{margin:0}
.w-s{max-width:80px!important;flex:none!important;min-width:0!important}.w-m{max-width:170px}

/* Panels */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:16px;box-shadow:var(--shadow)}
.panel h3:first-child{margin-top:0}
.panel.ok{border-color:#bfe0cc;background:#f4fbf7}
.panel.bad{border-color:#efc4bf;background:#fef7f6}
.facts{list-style:none;margin:0 0 14px;padding:0}
.facts li{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px solid var(--line)}
.facts li:last-child{border-bottom:0}
.facts span{color:var(--muted)}
.status-line{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:1.05rem}
.dot{width:12px;height:12px;border-radius:50%;flex:none}
.dot-ok{background:var(--ok)}.dot-bad{background:var(--bad)}.dot-wait{background:var(--accent)}
.auth{display:grid;place-items:center;padding-top:36px;padding-bottom:36px}
.auth-box{width:100%;max-width:420px;padding:28px}
.or{text-align:center;position:relative;margin:16px 0 6px;color:var(--muted);font-size:.85rem}
.or:before{content:"";position:absolute;left:0;right:0;top:50%;border-top:1px solid var(--line)}
.or span{background:var(--card);padding:0 10px;position:relative}
.row-links{display:flex;gap:10px;flex-wrap:wrap}

/* Tables */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:.92rem}
.table th{text-align:left;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:10px;border-bottom:1px solid #edf1ee;vertical-align:middle}
.table tr:last-child td{border-bottom:0}
.table td input,.table td select{padding:6px 9px}
.actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.row-off td{opacity:.5}
.st{display:inline-block;font-size:.75rem;font-weight:600;padding:2px 10px;border-radius:999px;white-space:nowrap}
.st-paid{background:var(--ok-bg);color:var(--ok)}
.st-pending,.st-review{background:var(--wait-bg);color:var(--wait)}
.st-failed,.st-cancelled{background:var(--bad-bg);color:var(--bad)}
.ellip{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pager{display:flex;gap:6px;margin-top:14px;flex-wrap:wrap}
.pager a{padding:4px 11px;border:1px solid var(--line);border-radius:7px;color:var(--ink)}
.pager a.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* Course page */
.course-hero{background:var(--brand);color:#fff;padding:36px 0 0}
.course-hero-in{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.course-hero h1{font-size:clamp(1.5rem,3vw,2.1rem)}
.meta{display:flex;flex-wrap:wrap;gap:8px 10px;margin:14px 0 28px}
.meta span{font-size:.85rem;background:rgba(255,255,255,.1);border-radius:999px;padding:3px 12px}
.buy{background:var(--card);color:var(--ink);border-radius:var(--r);box-shadow:0 12px 36px rgba(15,61,62,.2);margin-bottom:-60px;position:relative;z-index:2}
.buy-body{padding:18px}
.ticks{list-style:none;padding:0;margin:14px 0 0;font-size:.9rem}
.ticks li{padding-left:24px;position:relative;margin-bottom:4px}
.ticks li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}
.two-col{display:grid;grid-template-columns:1fr 340px;gap:40px;padding-top:36px}
.two-col>aside{padding-top:76px}
.two-col h2:first-child{margin-top:0}
.prose{line-height:1.85;overflow-wrap:anywhere}
.prose img{border-radius:8px;height:auto}
.prose pre{background:#102a2a;color:#e3efe9;padding:14px;border-radius:9px;overflow-x:auto;font-size:.88rem;line-height:1.6}
.prose pre code{background:none;padding:0;color:inherit}
.prose table{border-collapse:collapse;width:100%}.prose td,.prose th{border:1px solid var(--line);padding:6px 10px}
.acc{background:var(--card);border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.acc summary{display:flex;justify-content:space-between;gap:12px;padding:13px 16px;cursor:pointer;font-weight:600;list-style:none}
.acc summary::-webkit-details-marker{display:none}
.acc[open] summary{border-bottom:1px solid var(--line);background:#f8faf8}
.lesson-list{list-style:none;margin:0;padding:4px 16px}
.lesson-list li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid #edf1ee;font-size:.95rem}
.lesson-list li:last-child{border-bottom:0}
.locked{color:var(--muted)}
.lesson-list .locked:before{content:"🔒 ";font-size:.8em}

/* Player */
.player{display:grid;grid-template-columns:320px 1fr;min-height:calc(100vh - 60px)}
.side{background:var(--card);border-right:1px solid var(--line);padding:16px;overflow-y:auto;max-height:calc(100vh - 60px);position:sticky;top:60px}
.side-head{padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:8px}
.side-sec{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin:14px 0 4px}
.side-list{list-style:none;margin:0;padding:0}
.side-list a,.side-list .locked{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:8px;color:var(--ink);font-size:.93rem;line-height:1.5}
.side-list a:hover{background:#f0f4f1;text-decoration:none}
.side-list li.on a{background:#e4eeea;font-weight:600}
.tick{flex:none;width:18px;height:18px;border-radius:50%;border:2px solid #b9c7c0;margin-top:3px;position:relative}
.done .tick{background:var(--ok);border-color:var(--ok)}
.done .tick:after{content:"";position:absolute;left:4px;top:1px;width:4px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.side-exam{margin-top:18px}
.side-toggle{display:none;margin-bottom:12px}
.lesson{padding:28px clamp(16px,4vw,48px) 60px;max-width:900px;width:100%}
.video{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--r);overflow:hidden;margin-bottom:22px}
.video iframe,.video video{position:absolute;inset:0;width:100%;height:100%;border:0}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);flex-wrap:wrap}

/* Exam */
.exam-bar{position:sticky;top:60px;z-index:10;background:var(--brand);color:#fff;border-radius:var(--r);padding:12px 18px;display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;box-shadow:var(--shadow)}
.exam-bar .muted{color:#c5d8d4}
.timer{font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--accent)}
.timer.low{color:#ffb4a8}
.question{border:1px solid var(--line);margin:0 0 16px;min-width:0}
.question legend{font-size:.8rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;padding:0 6px}
.q-body{font-weight:600;margin-bottom:12px;font-size:1.03rem}
.opt{display:flex;gap:12px;align-items:flex-start;padding:11px 14px;border:1px solid var(--line);border-radius:9px;margin-bottom:8px;font-weight:400;cursor:pointer;font-size:1rem}
.opt:hover{border-color:var(--brand-2)}
.opt input{margin-top:6px;flex:none}
.opt:has(input:checked){border-color:var(--brand);background:#eef5f2}
.result{padding:36px 24px}
.score-ring{width:150px;height:150px;border-radius:50%;border:10px solid var(--bad);display:grid;place-content:center;margin:0 auto 20px;background:#fff}
.ok .score-ring{border-color:var(--ok)}
.score-ring b{font-size:2rem;line-height:1.1}
.score-ring span{font-size:.85rem;color:var(--muted)}
.big-tick{width:72px;height:72px;border-radius:50%;background:var(--ok);color:#fff;font-size:2.2rem;display:grid;place-items:center;margin:0 auto 14px}

/* Payment */
.order-sum{display:flex;justify-content:space-between;align-items:center;gap:16px}
.methods{display:grid;gap:10px;margin-bottom:8px}
.method{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;background:var(--card);cursor:pointer;margin:0}
.method:has(input:checked){border-color:var(--brand);box-shadow:0 0 0 2px rgba(15,61,62,.15)}
.method-body{flex:1;display:flex;flex-direction:column;line-height:1.45}
.method-tag{font-size:.7rem;font-weight:700;letter-spacing:.06em;padding:4px 9px;border-radius:6px;background:#eaf0ec;color:var(--brand)}
.m-khqr{background:#e1232e;color:#fff}.m-payway{background:#005d7d;color:#fff}.m-stripe{background:#635bff;color:#fff}
.khqr-card{width:270px;max-width:100%;margin:0 auto 16px;border-radius:16px;overflow:hidden;box-shadow:0 6px 24px rgba(0,0,0,.14);background:#fff;text-align:left}
.khqr-head{background:#e1232e;color:#fff;font-weight:700;letter-spacing:.1em;text-align:center;padding:9px}
.khqr-body{padding:14px 20px 20px}
.khqr-name{font-size:.85rem;color:var(--muted)}
.khqr-amount{font-size:1.5rem;font-weight:700;border-bottom:1px dashed #cfd6d2;padding-bottom:10px;margin-bottom:14px;font-variant-numeric:tabular-nums}
.khqr-qr svg{width:100%;height:auto;display:block}
.bank{background:#f3f6f3;border:1px solid var(--line);border-radius:9px;padding:14px;font:inherit;font-weight:600;white-space:pre-wrap;margin:0 0 10px}
.spin{display:inline-block;width:16px;height:16px;border:2px solid #c9d3cd;border-top-color:var(--brand);border-radius:50%;animation:spin 1s linear infinite;vertical-align:-3px}
@keyframes spin{to{transform:rotate(360deg)}}
.err-code{font-size:5rem;font-weight:700;color:var(--accent);line-height:1}

/* Admin */
.adm-cols{display:grid;grid-template-columns:1.6fr 1fr;gap:16px;align-items:start}
.adm-actions{margin-bottom:14px}
.thumb-prev{display:block;margin-top:8px;width:160px;border-radius:8px}
.danger-zone{margin-top:8px}
.sec-row{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap;margin-bottom:8px}
.sec-row .inline-form{flex:1}
.adm-lessons{list-style:none;margin:0 0 12px;padding:0}
.adm-lessons li{display:flex;gap:12px;align-items:center;padding:8px 2px;border-bottom:1px solid #edf1ee}
.adm-lessons li>a{flex:1;font-weight:500}
.q-opts{margin:6px 0 0;padding-left:22px;font-size:.93rem}
.q-opts li.correct{color:var(--ok);font-weight:600}
.q-opts li.correct:after{content:" ✓"}
.opt-row{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.sticky-save{position:sticky;bottom:0;background:linear-gradient(transparent,#f2f4f1 35%);padding:16px 0 12px;z-index:5}

/* Responsive */
@media (max-width:900px){
  .hero-in,.course-hero-in,.two-col,.adm-cols{grid-template-columns:1fr}
  .hero{padding:32px 0 36px}
  .hero-in{gap:26px}
  .buy{margin-bottom:-40px}
  .two-col{padding-top:64px;gap:8px}
  .two-col>aside{padding-top:0}
  .player{grid-template-columns:1fr}
  .side{display:none;position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line)}
  .side.open{display:block}
  .side-toggle{display:inline-flex}
}
@media (max-width:720px){
  body:not(.adm){padding-bottom:calc(62px + env(safe-area-inset-bottom))}
  .nav,.hide-m{display:none!important}
  .foot{margin-top:28px;padding:22px 0 16px}
  .tabs{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;background:var(--card);border-top:1px solid var(--line);z-index:40;padding-bottom:env(safe-area-inset-bottom)}
  .tabs a{display:flex;flex-direction:column;align-items:center;gap:1px;padding:8px 2px 6px;color:var(--muted);font-size:.7rem;font-weight:500;text-decoration:none;line-height:1.4}
  .tabs svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linejoin:round;stroke-linecap:round}
  .tabs a.on{color:var(--brand);font-weight:700}
  h1{font-size:1.4rem}
  .hero-stats{gap:22px}
  .search{flex-direction:column}
  .exam-bar{top:66px}
  .order-sum{flex-direction:column;align-items:flex-start;gap:4px}
}
/* Telegram Mini App: លាក់ header/footer, ប្រើ tab bar */
body.tg .foot{display:none}
body.tg .top .nav,body.tg .top .btn{display:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.coupon-row{display:flex;gap:8px;margin:0 0 16px}.coupon-row input{flex:1;min-width:0}
.notice{border-left:3px solid var(--accent);padding:10px 0 10px 14px;margin-bottom:12px}.notice b{display:block}.notice p{margin:4px 0 2px;font-size:.93rem;white-space:pre-line}
.ev{display:flex;gap:14px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--line)}.ev:last-child{border-bottom:0}.ev-date{flex:none;width:52px;text-align:center;background:var(--brand);color:#fff;border-radius:10px;padding:4px 0;line-height:1.2}.ev-date b{display:block;font-size:1.25rem}.ev-date span{font-size:.72rem}
.my-top{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;margin-bottom:8px}@media (max-width:820px){.my-top{grid-template-columns:1fr}}

.pay-badges{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.pb{display:inline-flex;align-items:center;height:26px;padding:0 9px;border-radius:6px;font-size:.72rem;font-weight:800;letter-spacing:.02em;background:#fff;border:1px solid #dde4df;color:#334}
.pb-aba{background:#005d7d;border-color:#005d7d;color:#fff}.pb-khqr{background:#e1232e;border-color:#e1232e;color:#fff}
.pb-visa{color:#1a1f71;font-style:italic}.pb-mc{color:#eb001b}.pb-up{color:#00508f}
.mobile-only{display:none}
@media (hover:none) and (pointer:coarse){.mobile-only{display:block}}
.m-payway{background:#e1232e;color:#fff}.m-payway_card{background:#005d7d;color:#fff}
/* skill tracks: thumbnail art + swatches (web, app, admin) */
.thumb-art{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.92);
  background:radial-gradient(circle at 82% 18%,rgba(255,255,255,.22) 0 14%,transparent 15%),radial-gradient(circle at 12% 110%,rgba(255,255,255,.14) 0 30%,transparent 31%),linear-gradient(135deg,var(--tc,#047d5d),color-mix(in srgb,var(--tc,#047d5d) 62%,#0b1f19))}
.thumb-art svg{filter:drop-shadow(0 6px 14px rgba(0,0,0,.18))}
.cat-sw{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;color:var(--tc);background:color-mix(in srgb,var(--tc) 14%,#fff)}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* ===== Confirm dialog ===== */
html.cfm-open{overflow:hidden}
.cfm{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;padding:20px;background:rgba(10,24,19,.0);backdrop-filter:blur(0);transition:background .16s,backdrop-filter .16s;
  --c:#047d5d;--cb:#e6f4ee;--bg:#fff;--fg:#14231d;--mu:#5c7170;--ln:#e3ece7}
.cfm.in{background:rgba(10,24,19,.45);backdrop-filter:blur(3px)}
.cfm-warn{--c:#c77700;--cb:#fff3dc}
.cfm-danger{--c:#d23b2e;--cb:#fde8e6}
.cfm-ok{--c:#047d5d;--cb:#e6f4ee}
.cfm-box{width:100%;max-width:400px;background:var(--bg);color:var(--fg);border-radius:20px;padding:28px 24px 20px;text-align:center;
  box-shadow:0 30px 70px rgba(0,0,0,.25),0 2px 8px rgba(0,0,0,.08);transform:translateY(14px) scale(.96);opacity:0;transition:transform .18s cubic-bezier(.2,.9,.3,1.2),opacity .16s}
.cfm.in .cfm-box{transform:none;opacity:1}
.cfm-ic{display:inline-grid;place-items:center;width:58px;height:58px;border-radius:50%;background:var(--cb);color:var(--c);margin-bottom:14px;box-shadow:0 0 0 8px color-mix(in srgb,var(--cb) 45%,transparent)}
.cfm-box h3{margin:0 0 8px;font-size:1.15rem;line-height:1.5;color:var(--fg)}
.cfm-box p{margin:0 0 22px;color:var(--mu);font-size:.95rem;line-height:1.7}
.cfm-act{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.cfm-act button{font:inherit;font-weight:600;padding:12px 14px;border-radius:12px;cursor:pointer;border:1.5px solid transparent;transition:filter .15s,background .15s,box-shadow .15s}
.cfm-no{background:#fff;border-color:var(--ln)!important;color:var(--fg)}
.cfm-no:hover{background:#f4f8f6}
.cfm-yes{background:var(--c);color:#fff}
.cfm-yes:hover{filter:brightness(1.07)}
.cfm-act button:focus-visible{outline:0;box-shadow:0 0 0 4px color-mix(in srgb,var(--c) 25%,transparent)}
@media (max-width:480px){.cfm{align-items:end;padding:12px}.cfm-box{border-radius:22px;padding-bottom:16px}.cfm-act{grid-template-columns:1fr}.cfm-yes{order:-1}}
html[data-theme="dark"] .cfm{--bg:#1b2a26;--fg:#e8f1ed;--mu:#9fb3ad;--ln:#2e403b}
html[data-theme="dark"] .cfm-no{background:#22332e}
html[data-theme="dark"] .cfm-no:hover{background:#2a3d37}
html[data-theme="dark"] .cfm-ic{background:color-mix(in srgb,var(--c) 22%,transparent)}
@media (prefers-reduced-motion:reduce){.cfm,.cfm-box{transition:none}}
.cfm-act .cfm-no:focus-visible{box-shadow:0 0 0 3px rgba(20,35,29,.12)}
html[data-theme="dark"] .cfm-ic{box-shadow:0 0 0 8px color-mix(in srgb,var(--c) 12%,transparent)}
.prose blockquote{margin:1.3em 0;padding:14px 18px;border-left:4px solid var(--accent,#f5a21f);background:#fff8ec;border-radius:0 12px 12px 0;color:inherit}
.prose blockquote p{margin:.3em 0}
.prose th{background:#f1f6f3;text-align:left}
.prose td,.prose th{vertical-align:top}
.prose table{margin:1em 0;font-size:.95em;display:block;overflow-x:auto}
@media (min-width:700px){.prose table{display:table}}
/* ===== Quiz ===== */
.qz-tag{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.03em;color:#7c4dcc;background:#f1eafd;border-radius:6px;padding:1px 6px;margin-right:4px;vertical-align:1px}
.side-list li.quiz-item.done .qz-tag{color:var(--ok,#178a4c);background:#e3f6ec}
.qz-head{margin-bottom:18px}
.qz-badge{display:inline-flex;align-items:center;gap:5px;font-size:.8rem;font-weight:700;color:#7c4dcc;background:#f1eafd;border-radius:999px;padding:3px 12px}
.qz-head h1{margin:10px 0 6px}
.qz-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.qz-stats span{display:inline-flex;align-items:center;gap:5px;font-size:.85rem;color:var(--muted);background:#f3f6f4;border-radius:999px;padding:5px 12px}
.qz-stats span.ok{color:var(--ok,#178a4c);background:#e3f6ec;font-weight:600}
.qz-card{border:1px solid var(--line);border-radius:14px;padding:16px 18px 10px;margin:0 0 14px;background:#fff}
.qz-card legend{font-weight:600;line-height:1.7;padding:0 4px;float:left;width:100%;margin-bottom:10px}
.qz-card legend+*{clear:both}
.qz-n{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;background:#7c4dcc;color:#fff;font-size:.8rem;margin-right:6px}
.qz-card .opt{margin-bottom:8px}
.qz-submit{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;position:sticky;bottom:0;background:linear-gradient(transparent,var(--bg,#f6f8f7) 30%);padding:16px 0 8px}
.qz-result{display:flex;gap:22px;align-items:center;border-radius:18px;padding:22px;margin:4px 0 22px;border:1px solid}
.qz-result.pass{background:#effaf4;border-color:#bfe8cf}
.qz-result.fail{background:#fff6ec;border-color:#f6d5a8}
.qz-result h2{margin:0 0 4px;font-size:1.25rem}
.qz-result p{margin:0 0 6px}
.qz-ring{--c:#178a4c;flex:none;width:104px;height:104px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--c) calc(var(--p)*1%),#e5ece8 0)}
.qz-result.fail .qz-ring{--c:#e08a00}
.qz-ring b{display:grid;place-items:center;width:80px;height:80px;border-radius:50%;background:#fff;font-size:1.3rem}
.qz-sub{font-size:1.1rem;margin:22px 0 12px}
.qz-review{padding-left:0;list-style:none;counter-reset:q}
.qz-review>li{border:1px solid var(--line);border-left:4px solid #e26b5f;border-radius:12px;padding:12px 16px;margin-bottom:12px;background:#fff}
.qz-review>li.good{border-left-color:#2fa86a}
.qz-q{font-weight:600;margin:0 0 8px}
.qz-review ul{margin:0;padding-left:0;list-style:none}
.qz-review ul li{padding:6px 10px;border-radius:8px;margin-bottom:4px;font-size:.93rem}
.qz-review ul li.right{background:#e3f6ec;color:#11643a;font-weight:600}
.qz-review ul li.wrong{background:#fdecea;color:#a3271c;text-decoration:line-through}
.qz-review ul li small{font-weight:500;text-decoration:none;display:inline-block}
.lesson-list li.quiz-row a,.lesson-list li.quiz-row span{font-weight:600}
@media (max-width:600px){.qz-result{flex-direction:column;text-align:center}.qz-result .btn-row{justify-content:center}}
.qz-locked{text-align:center;border:1px dashed #d8c7f5;background:#faf7ff;border-radius:18px;padding:28px 22px;margin:6px 0 20px}
.qz-lock-ic{display:inline-grid;place-items:center;width:58px;height:58px;border-radius:50%;background:#f1eafd;color:#7c4dcc;margin-bottom:10px}
.qz-locked h2{margin:0 0 6px;font-size:1.2rem}
.qz-locked ol{text-align:left;display:block;width:fit-content;max-width:100%;margin:8px auto 18px;padding-left:22px}
.qz-locked ol li{margin:4px 0}
.side-list li.q-locked a{opacity:.75}
.side-list li.q-locked svg{vertical-align:-2px;color:var(--muted)}
.qz-locked .small{margin-top:14px}