:root{
    --maroon:#7A2B27;
    --maroon-dark:#5A1E1B;
    --gold:#C99A3A;
    --gold-soft:#E8D3A0;
    --cream:#FBF4E7;
    --ink:#2B1D14;
    --ink-soft:#6B5A47;
    --line:#E6D9BE;
    --radius:10px;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  body{
    font-family:'Noto Sans Thai', sans-serif;
    color:var(--ink);
    background:var(--cream);
    line-height:1.6;
  }
  h1,h2,h3,h4{font-family:'Noto Serif Thai', serif; font-weight:700; color:var(--maroon-dark);}
  a{color:inherit; text-decoration:none;}
  img{max-width:100%; display:block;}
  .wrap{max-width:1160px; margin:0 auto; padding:0 20px;}

  /* ---------- Top utility bar ---------- */
  .utility-bar{background:var(--maroon-dark); color:var(--gold-soft); font-size:.82rem;}
  .utility-bar .wrap{display:flex; justify-content:space-between; align-items:center; height:34px;}
  .utility-bar a{opacity:.85;}
  .utility-bar a:hover{opacity:1; text-decoration:underline;}

  /* ---------- Header / Nav ---------- */
  header.site-header{background:#fff; border-bottom:3px solid var(--gold); position:sticky; top:0; z-index:50;}
  .header-row{display:flex; align-items:center; justify-content:space-between; padding:14px 0;}
  .brand{display:flex; align-items:center; gap:12px;}
  .brand-mark{
    width:52px; height:52px; border-radius:50%;
    background:conic-gradient(from 200deg, var(--gold), var(--maroon), var(--gold));
    display:flex; align-items:center; justify-content:center;
    color:#fff; font-family:'Noto Serif Thai',serif; font-weight:700; font-size:1.1rem;
    flex-shrink:0;
  }
  .brand-text h1{font-size:1.05rem; line-height:1.25;}
  .brand-text span{font-size:.78rem; color:var(--ink-soft);}

  nav.main-nav{display:flex; align-items:center; gap:2px;}
  nav.main-nav > ul{display:flex; list-style:none; gap:2px;}
  nav.main-nav > ul > li{position:relative;}
  nav.main-nav > ul > li > a{
    display:block; padding:12px 16px; font-weight:600; font-size:.94rem; color:var(--maroon-dark);
    border-bottom:3px solid transparent;
  }
  nav.main-nav > ul > li:hover > a{border-color:var(--gold); background:#FFF9EE;}
  .submenu{
    position:absolute; top:100%; left:0; background:#fff; min-width:190px;
    box-shadow:0 12px 24px rgba(90,30,27,.14); border-radius:0 0 8px 8px;
    border-top:2px solid var(--gold);
    display:none; list-style:none; padding:6px 0;
  }
  nav.main-nav > ul > li:hover .submenu{display:block;}
  .submenu a{display:block; padding:9px 16px; font-size:.88rem; color:var(--ink);}
  .submenu a:hover{background:var(--cream); color:var(--maroon-dark);}
  .cta-btn{
    background:var(--maroon); color:#fff !important; padding:10px 20px; border-radius:999px;
    font-weight:700; font-size:.9rem; white-space:nowrap;
  }
  .cta-btn:hover{background:var(--maroon-dark);}
  .burger{display:none; background:none; border:none; font-size:1.6rem; color:var(--maroon-dark); cursor:pointer;}

  /* ---------- Hero slide ---------- */
  .hero{position:relative; background:linear-gradient(135deg,var(--maroon) 0%,var(--maroon-dark) 100%); color:#fff; overflow:hidden;}
  .hero .wrap{padding:56px 20px; display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:center;}
  .hero-eyebrow{color:var(--gold-soft); font-weight:600; font-size:.85rem; letter-spacing:.02em;}
  .hero h2{color:#fff; font-size:2rem; margin:10px 0 16px;}
  .hero ul{margin:0 0 18px 20px; font-size:.95rem; color:#F3E6C9;}
  .hero ul li{margin-bottom:6px;}
  .hero .cta-btn{background:var(--gold); color:var(--maroon-dark) !important;}
  .hero-art{
    aspect-ratio:4/3; border-radius:16px; background:
      radial-gradient(circle at 30% 30%, rgba(255,255,255,.14), transparent 60%),
      repeating-linear-gradient(45deg, rgba(201,154,58,.25) 0 12px, transparent 12px 24px);
    border:1px solid rgba(255,255,255,.25);
  }

  /* ---------- Quick links strip ---------- */
  .quick-links{background:#fff; border-bottom:1px solid var(--line);}
  .quick-links .wrap{display:grid; grid-template-columns:repeat(4,1fr); gap:0;}
  .quick-links a{
    display:flex; flex-direction:column; align-items:center; gap:8px; padding:20px 10px; text-align:center;
    border-right:1px solid var(--line); font-weight:600; font-size:.88rem; color:var(--maroon-dark);
  }
  .quick-links a:last-child{border-right:none;}
  .quick-links a:hover{background:var(--cream);}
  .quick-icon{
    width:44px; height:44px; border-radius:50%; background:var(--cream); border:1.5px solid var(--gold);
    display:flex; align-items:center; justify-content:center; font-size:1.2rem;
  }

  /* ---------- Section heading ---------- */
  .section{padding:52px 0;}
  .section-head{text-align:center; margin-bottom:30px;}
  .section-head h3{font-size:1.5rem;}
  .section-head p{color:var(--ink-soft); font-size:.92rem; margin-top:6px;}

  /* ---------- Countdown cards ---------- */
  .countdown-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
  .countdown-card{
    background:#fff; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
    box-shadow:0 6px 18px rgba(90,30,27,.06);
  }
  .cc-media{
    aspect-ratio:16/10; background:linear-gradient(135deg,var(--gold-soft),var(--cream));
    display:flex; align-items:center; justify-content:center; font-size:2rem; color:var(--maroon);
  }
  .cc-body{padding:18px 20px 22px;}
  .cc-body h4{font-size:1.1rem; margin-bottom:4px;}
  .cc-date{font-size:.85rem; color:var(--ink-soft); margin-bottom:14px;}
  .cc-timer{display:flex; gap:8px;}
  .cc-timer div{
    flex:1; background:var(--maroon-dark); color:#fff; border-radius:8px; padding:8px 4px; text-align:center;
  }
  .cc-timer strong{display:block; font-size:1.15rem; font-family:'Noto Serif Thai',serif;}
  .cc-timer span{font-size:.68rem; color:var(--gold-soft);}

  /* ---------- Exam detail accordion ---------- */
  .detail-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px;}
  .detail-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:20px;}
  .detail-card h4{font-size:1rem; border-bottom:2px solid var(--gold); padding-bottom:10px; margin-bottom:12px;}
  .detail-card p{font-size:.86rem; color:var(--ink-soft); margin-bottom:6px;}

  /* ---------- Archive banner row ---------- */
  .archive-row{display:grid; grid-template-columns:repeat(5,1fr); gap:16px;}
  .archive-card{
    border-radius:var(--radius); overflow:hidden; aspect-ratio:3/4; position:relative;
    background:linear-gradient(160deg,var(--maroon),var(--maroon-dark));
    display:flex; align-items:flex-end; padding:14px; color:#fff; font-weight:700; font-size:.92rem;
    border:1px solid var(--gold);
  }
  .archive-card:nth-child(2){background:linear-gradient(160deg,#8A5A2B,#5A3A1B);}
  .archive-card:nth-child(3){background:linear-gradient(160deg,#3A5A4A,#22362C);}
  .archive-card:nth-child(4){background:linear-gradient(160deg,var(--gold),#8A6A1B);}
  .archive-card:nth-child(5){background:linear-gradient(160deg,#5A4A7A,#332246);}

  /* ---------- Footer ---------- */
  footer{background:var(--maroon-dark); color:#EADFC7; padding-top:46px;}
  .footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; padding-bottom:36px;}
  .footer-grid h5{color:#fff; font-family:'Noto Serif Thai',serif; font-size:1rem; margin-bottom:14px;}
  .footer-grid ul{list-style:none; font-size:.86rem;}
  .footer-grid li{margin-bottom:9px;}
  .footer-grid a:hover{color:var(--gold-soft); text-decoration:underline;}
  .footer-brand p{font-size:.85rem; opacity:.8; margin-top:8px; max-width:32ch;}
  .footer-social{display:flex; gap:10px; margin-top:16px;}
  .footer-social a{
    width:34px; height:34px; border-radius:50%; border:1px solid rgba(255,255,255,.3);
    display:flex; align-items:center; justify-content:center; font-size:.85rem;
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.15); padding:16px 0; text-align:center; font-size:.78rem; opacity:.75;
  }

  /* ---------- Floating assistant ---------- */
  .assistant-fab{
    position:fixed; bottom:22px; right:22px; z-index:60;
    width:60px; height:60px; border-radius:50%; background:var(--gold);
    display:flex; align-items:center; justify-content:center; font-size:1.5rem;
    box-shadow:0 10px 24px rgba(0,0,0,.25); border:3px solid #fff; cursor:pointer;
  }

  @media (max-width:920px){
    nav.main-nav{display:none;}
    .burger{display:block;}
    .hero .wrap{grid-template-columns:1fr;}
    .quick-links .wrap{grid-template-columns:repeat(2,1fr);}
    .quick-links a{border-right:none; border-bottom:1px solid var(--line);}
    .countdown-grid, .detail-grid{grid-template-columns:1fr;}
    .archive-row{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }