:root{
 --gold:#bd7b16;--gold2:#e5b84e;--deep:#5d3608;--nav:#6b430d;
 --cream:#fff8e9;--paper:#fffdf8;--blue:#4ea9df;--ink:#332a20;
 --muted:#70665d;--line:#ead8b9;--shadow:0 18px 44px rgba(100,60,14,.14)
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Tahoma,"Noto Sans Thai",sans-serif;color:var(--ink);
 background:linear-gradient(180deg,#fffaf1,#f1eadf)}
a{text-decoration:none;color:inherit} img{max-width:100%} button{font:inherit}
.site-header{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:18px;
 min-height:74px;padding:10px max(18px,calc((100vw - 1340px)/2));
 color:#fff;background:rgba(93,54,8,.97);box-shadow:0 8px 28px rgba(0,0,0,.18);backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:10px;white-space:nowrap}.brand-icon{font-size:2rem}
.brand b{display:block;color:#ffe29b;font-size:1.15rem}.brand small{display:block;font-weight:800}
.nav-links{display:flex;gap:2px;margin-left:auto}.nav-links a{padding:10px 10px;border-radius:999px;font-weight:900}
.nav-links a:hover,.nav-links a.active{background:#fff;color:var(--deep)}
.menu-button{display:none;margin-left:auto;border:0;border-radius:14px;background:#fff;color:var(--deep);padding:11px 15px;font-weight:900}
.hero{background:#fee8bf;overflow:hidden}.hero img{display:block;width:100%;height:auto;object-fit:contain}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;padding:18px;background:#fff7e4}
.btn{min-height:52px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;border:2px solid var(--deep);border-radius:16px;background:#fff;color:var(--deep);font-weight:900}
.btn.primary{background:var(--deep);color:#fff}
.container{max-width:1240px;margin:auto;padding:42px 20px}.page-head{margin-bottom:27px}
.page-head h1{margin:0 0 10px;color:var(--deep);font-size:clamp(2.45rem,5vw,4.6rem);line-height:1.12}
.page-head p{color:var(--muted);font-size:1.08rem;line-height:1.85}
.section-title{margin:40px 0 18px;color:var(--deep);font-size:2rem}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.card{background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow);line-height:1.85}
.card h2,.card h3{margin-top:0;color:var(--deep)}.feature{transition:.2s}.feature:hover{transform:translateY(-4px)}
.feature-icon{font-size:2.1rem}.tag{display:inline-block;padding:6px 12px;border-radius:999px;background:#f8e4bc;color:var(--deep);font-weight:900}
.photo{display:block;width:100%;border-radius:22px;background:#fff;box-shadow:var(--shadow);cursor:zoom-in}
.photo-caption{font-size:.92rem;color:var(--muted);text-align:center;margin-top:8px}
.info-table{width:100%;border-collapse:collapse;background:#fff;border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.info-table th,.info-table td{padding:15px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.info-table th{width:27%;background:#f8e7c7;color:var(--deep)}
.timeline{display:grid;gap:18px}.event{display:grid;grid-template-columns:minmax(300px,430px) 1fr;gap:22px;align-items:center;background:#fff;border-radius:25px;padding:20px;box-shadow:var(--shadow)}
.event:nth-child(even){grid-template-columns:1fr minmax(300px,430px)}.event:nth-child(even) img{order:2}.event h3{font-size:1.42rem;color:var(--deep);margin-top:0}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.gallery figure{margin:0;background:#fff;border-radius:20px;padding:12px;box-shadow:var(--shadow)}
.gallery figcaption{padding:10px 5px 3px;line-height:1.55;font-weight:800;color:var(--deep)}
.poem-card{background:#fff;border-radius:24px;padding:20px;box-shadow:var(--shadow);display:grid;grid-template-columns:340px 1fr;gap:20px;align-items:center}
.poem-card h3{color:var(--deep);margin-top:0}.quote{padding:18px;border-left:6px solid var(--gold);background:#fff4d9;border-radius:12px;line-height:1.9}
.accordion{display:grid;gap:15px}.accordion details{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
.accordion summary{cursor:pointer;padding:20px 22px;font-weight:900;color:var(--deep);list-style:none}
.accordion details>div{padding:0 22px 22px;line-height:1.85}
.note{padding:22px;border-radius:22px;background:var(--deep);color:#fff;line-height:1.85}
.quiz-wrap{max-width:960px;margin:auto}.progress-card{position:sticky;top:86px;z-index:20}
.progress{height:14px;background:#e6dccb;border-radius:999px;overflow:hidden;margin-top:10px}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--deep),var(--gold2))}
.qcard{background:#fff;border-radius:23px;padding:22px;margin:18px 0;box-shadow:var(--shadow)}
.level-heading{margin:30px 0 12px;padding:16px 20px;border-radius:18px;background:var(--deep);color:#fff;font-size:1.25rem;font-weight:900}
.option{display:grid;grid-template-columns:24px 32px 1fr;gap:8px;align-items:start;margin:9px 0;padding:13px;border:2px solid #e7d8bf;border-radius:15px;cursor:pointer}
.option:hover{border-color:var(--deep);background:#fff9ed}.option input{margin-top:5px}
.result{display:none;background:#fff;border-radius:24px;padding:24px;margin-top:22px;box-shadow:var(--shadow)}.result.show{display:block}
.review{padding:14px;margin:10px 0;border-radius:14px;line-height:1.7}.correct{background:#e7f3e8}.wrong{background:#fae8e4}
.lightbox{display:none;position:fixed;inset:0;z-index:500;align-items:center;justify-content:center;padding:26px;background:rgba(25,13,2,.94)}
.lightbox.show{display:flex}.lightbox img{max-width:94vw;max-height:88vh;object-fit:contain;border-radius:14px}
.lightbox-close{position:absolute;top:18px;right:20px;width:48px;height:48px;border:0;border-radius:50%;background:#fff;font-size:1.8rem;cursor:pointer}
.footer{margin-top:48px;background:var(--deep);color:#fff;text-align:center;padding:28px 20px;display:grid;gap:6px}
@media(max-width:1040px){
 .menu-button{display:block}.nav-links{display:none}.nav-links.open{position:absolute;left:12px;right:12px;top:72px;display:flex;flex-direction:column;align-items:stretch;background:#fff;color:var(--deep);padding:12px;border-radius:18px;box-shadow:var(--shadow)}
 .grid{grid-template-columns:repeat(2,1fr)}.grid-2,.event,.event:nth-child(even),.poem-card{grid-template-columns:1fr}.event:nth-child(even) img{order:0}.gallery{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
 .site-header{min-height:64px;padding:8px 14px}.brand b{font-size:1rem}.brand small{font-size:.82rem}
 .container{padding:28px 14px}.grid,.gallery{grid-template-columns:1fr}
 .hero img{width:100%;height:auto;object-fit:contain;object-position:center top}
 .hero-actions{display:grid;grid-template-columns:1fr;padding:14px}.btn{width:100%}
 .page-head h1{font-size:2.5rem}.progress-card{top:76px}.info-table th{width:38%}
}