:root{--bg:#fffcfb;--bg-2:#faf5f3;--card:#ffffff;--card-2:#fbf6f4;--border:#f0e2de;--border-strong:#e6d2cd;--text:#2b1a17;--muted:#6b544d;--muted-2:#8a6f67;--brand:#a90c14;--brand-2:#83060d;--accent:#cf2129;--green:#1fa971;--radius:20px;--shadow:0 20px 60px rgba(92,24,21,.14)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"IBM Plex Sans Thai","Fredoka",system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(1000px 620px at 82% -8%,rgba(169,12,20,.08),transparent 60%),radial-gradient(820px 520px at 2% 2%,rgba(207,33,41,.05),transparent 55%),var(--bg)}
h1,h2,h3{font-family:"Fredoka","IBM Plex Sans Thai",sans-serif;line-height:1.2;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(255,252,251,.82);border-bottom:1px solid var(--border)}
nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo img{height:46px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:14px;border:1px solid var(--border);transition:all .22s ease;white-space:nowrap;cursor:pointer}
.btn:hover{transform:translateY(-2px);border-color:var(--border-strong)}
.btn-primary{background:linear-gradient(135deg,#b41019,var(--brand-2));border:none;color:#fff;font-weight:700;box-shadow:0 10px 26px rgba(169,12,20,.32)}
.btn-ghost{background:var(--card)}
.crumbs{display:flex;flex-wrap:wrap;gap:7px;align-items:center;font-size:13.5px;color:var(--muted-2);padding:26px 0 0}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{opacity:.5}
/* ----- หน้ารวมบทความ ----- */
.blog-hero{padding:56px 0 34px;text-align:center}
.blog-hero .eyebrow{color:var(--brand);font-weight:600;font-size:13.5px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.blog-hero h1{font-size:clamp(30px,4.6vw,46px);font-weight:800}
.blog-hero p{color:var(--muted);margin:16px auto 0;max-width:620px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:14px 0 40px}
.post-card{display:flex;flex-direction:column;background:linear-gradient(180deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .28s ease}
.post-card:hover{transform:translateY(-6px);border-color:rgba(169,12,20,.35);box-shadow:0 18px 44px rgba(92,24,21,.16)}
.post-card .thumb{aspect-ratio:1200/630;background:linear-gradient(135deg,#f7ede9,#fbf6f4);overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.post-card .thumb.ph{display:grid;place-items:center;font-size:40px}
.post-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:9px;flex:1}
.post-card .cat{color:var(--brand);font-weight:600;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase}
.post-card h2{font-size:19px;line-height:1.35}
.post-card p{color:var(--muted);font-size:14.5px;flex:1}
.post-card .meta{color:var(--muted-2);font-size:13px;display:flex;gap:12px;margin-top:4px}
/* ----- หน้าบทความ ----- */
.article-head{max-width:800px;margin:0 auto;padding:30px 0 8px}
.article-head .cat{color:var(--brand);font-weight:600;font-size:13px;letter-spacing:.07em;text-transform:uppercase}
.article-head h1{font-size:clamp(28px,4.4vw,42px);font-weight:800;margin:12px 0 16px}
.article-head .meta{display:flex;flex-wrap:wrap;gap:8px 18px;color:var(--muted-2);font-size:14px;align-items:center}
.article-head .meta .dot{opacity:.45}
.cover{max-width:920px;margin:26px auto 8px}
.cover img{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--border-strong);box-shadow:var(--shadow);display:block}
.prose{max-width:800px;margin:0 auto;padding:22px 0 8px}
.prose p{color:#4a3833;margin-bottom:18px}
.prose h2{font-size:clamp(23px,3.4vw,30px);margin:38px 0 14px}
.prose h3{font-size:20px;margin:30px 0 10px}
.prose a{color:var(--brand);border-bottom:1px solid rgba(169,12,20,.4)}
.prose a:hover{border-color:var(--brand)}
.prose ul,.prose ol{margin:0 0 18px 26px;color:#4a3833}
.prose li{margin-bottom:8px}
.prose img{max-width:100%;height:auto;border-radius:14px;border:1px solid var(--border)}
.prose figure{margin:26px 0}
.prose figcaption{text-align:center;color:var(--muted-2);font-size:13.5px;margin-top:10px}
.prose blockquote{border-left:4px solid var(--brand);background:var(--card-2);border-radius:0 14px 14px 0;padding:16px 22px;margin:0 0 18px;color:var(--muted)}
.prose blockquote p{margin:0}
.prose pre{background:#2b1a17;color:#fbeae7;border-radius:14px;padding:18px 20px;overflow-x:auto;margin:0 0 18px;font-size:14px;line-height:1.6}
.prose code{font-family:ui-monospace,Menlo,monospace}
.prose p code,.prose li code{background:var(--card-2);border:1px solid var(--border);border-radius:6px;padding:1px 7px;font-size:14.5px;color:var(--brand-2)}
.prose hr{border:none;border-top:1px solid var(--border);margin:32px 0}
.prose .table-wrap{overflow-x:auto;margin:0 0 18px}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose th,.prose td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.prose th{background:var(--card-2);font-family:"Fredoka","IBM Plex Sans Thai",sans-serif}
.tags{max-width:800px;margin:10px auto 0;padding:8px 0;display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:13px;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:6px 14px;background:var(--card-2)}
/* ----- CTA + related ----- */
.ctaband{margin:56px auto 0;max-width:1160px;position:relative;overflow:hidden;border-radius:26px;padding:48px 34px;text-align:center;background:linear-gradient(135deg,#b41019,#690409);color:#fff}
.ctaband h2{font-size:clamp(23px,3.6vw,32px)}
.ctaband p{color:rgba(255,255,255,.88);margin:12px auto 24px;max-width:560px}
.ctaband .btn-primary{background:#fff;color:var(--brand-2);box-shadow:0 12px 30px rgba(0,0,0,.22)}
.related{padding:56px 0 10px}
.related h2{text-align:center;font-size:clamp(22px,3.4vw,30px);margin-bottom:28px}
/* ----- footer ----- */
footer{border-top:1px solid var(--border);margin-top:70px;padding:38px 0 30px}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;color:var(--muted-2);font-size:13.5px}
.foot-links{display:flex;gap:20px;flex-wrap:wrap}
.foot-links a:hover{color:var(--text)}
@media(max-width:900px){.post-grid{grid-template-columns:1fr;padding-bottom:28px}.nav-links .hide-sm{display:none}}
@media(min-width:640px) and (max-width:980px){.post-grid{grid-template-columns:repeat(2,1fr)}}