:root{--bg:#0b2239;--bg2:#0e2c49;--card:#123252;--gold:#f2b33d;--teal:#37c8b4;--text:#eef4f8;--muted:#a9bfd0;--line:#1e4568}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans Myanmar","Pyidaungsu",system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.75;padding-bottom:40px}
header.site{background:linear-gradient(135deg,var(--bg2),#0a1c30);padding:20px 18px 14px;border-bottom:1px solid var(--line)}
header.site h1{font-size:21px;color:var(--gold)}
header.site p{color:var(--muted);font-size:13.5px}
nav.topnav{display:flex;gap:4px;flex-wrap:wrap;background:#0a1c30;border-bottom:1px solid var(--line);padding:8px 10px;position:sticky;top:0;z-index:5}
nav.topnav a{color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:8px;font-size:14.5px}
nav.topnav a:hover{background:var(--card);color:var(--text)}
main{padding:14px;max-width:760px;margin:0 auto}
a{color:var(--teal)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:14px}
.card h2{font-size:17.5px;margin-bottom:8px}
.hero h2{font-size:20px;color:var(--gold);margin-bottom:8px}
.auth{max-width:440px;margin:22px auto}
label{display:block;margin-bottom:12px;font-size:14.5px}
input{width:100%;padding:11px 12px;border-radius:10px;border:1px solid var(--line);background:#0a1c30;color:var(--text);font-size:15px;font-family:inherit;margin-top:4px}
button,.btn{font-family:inherit;cursor:pointer;border:none;border-radius:10px;padding:9px 14px;font-size:14.5px;text-decoration:none;display:inline-block}
.btn-gold{background:var(--gold);color:#231a02;font-weight:700}
.btn-teal{background:var(--teal);color:#04231d;font-weight:700}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.sm{padding:4px 10px;font-size:13px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:10px 0}
.muted{color:var(--muted);font-size:14px}
.warn{background:#33150f;border:1px solid #7a3a24;color:#ffcdb8;border-radius:12px;padding:10px 14px;font-size:14px;margin-bottom:12px}
.ok{background:#0d3325;border:1px solid #1e6b4a;color:#a9f0cd;border-radius:12px;padding:10px 14px;font-size:14px;margin-top:10px}
.tag{display:inline-block;background:var(--bg);color:var(--teal);border:1px solid var(--line);border-radius:999px;padding:1px 10px;font-size:12px;margin-bottom:6px}
.search{margin-bottom:14px}
.lessonrow{display:flex;justify-content:space-between;gap:10px;padding:10px 8px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--text)}
.lessonrow:last-child{border-bottom:none}
.lessonrow:hover{background:#0e2c49;border-radius:8px}
.lrow-title{font-size:15px}
.lrow-meta{color:var(--muted);font-size:13px;white-space:nowrap}
.lesson-title{font-size:19px;line-height:1.55;margin:4px 0 10px}
.player-title{color:var(--gold);font-weight:700;margin-bottom:6px}
audio{width:100%}
.note h3{color:var(--gold);font-size:16.5px;margin:16px 0 6px}
.note p{margin-bottom:8px}
.note ul{margin:0 0 8px 20px}
.note li{margin-bottom:3px}
.sec{color:var(--gold);margin:16px 0 8px}
.prompt{background:#0a1c30;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:12px}
.prompt h4{color:var(--teal);font-size:14.5px;margin-bottom:6px}
.prompt pre,.gpre{white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,Menlo,monospace;font-size:13px;line-height:1.6;color:#d7e6f2;background:#071626;border-radius:8px;padding:10px;margin-bottom:8px}
.refs a{word-break:break-all}
details.guide{margin-top:10px;background:#0a1c30;border:1px solid var(--line);border-radius:12px;padding:10px 14px}
details.guide summary{cursor:pointer;color:var(--gold);font-weight:700}
.guidebody h4.gh{color:var(--teal);margin:14px 0 4px;font-size:15px}
.guidebody p{margin-bottom:6px}
.guidebody ul{margin:0 0 8px 20px}
.page{margin:6px 0 12px}
.mname{font-size:16.5px}
.tbl{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:13.5px}
th,td{border-bottom:1px solid var(--line);padding:7px 6px;text-align:left;vertical-align:top}
code{font-family:ui-monospace,Menlo,monospace}
.back{margin-bottom:10px}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:var(--gold);color:#231a02;padding:9px 18px;border-radius:999px;font-weight:700;font-size:14px;opacity:0;pointer-events:none;transition:opacity .25s;z-index:9}
.toast.show{opacity:1}