/* ===== knowledge.css — เฉพาะหน้า /knowledge/ ===== */

.pagehero{padding:64px 0 56px;border-bottom:1px solid var(--line);}
.pagehero h1{font-size:clamp(28px,3.8vw,44px);line-height:1.28;max-width:780px;}
.pagehero p.lead{font-size:17.5px;color:var(--ink-soft);max-width:700px;margin-top:18px;}
.pagehero .breadcrumb{font-family:var(--utility);font-size:13px;color:var(--ink-soft);margin-bottom:22px;}
.pagehero .breadcrumb a{color:var(--lacquer);}
.pagehero .stat-row{display:flex;gap:30px;flex-wrap:wrap;margin-top:30px;}
.pagehero .stat b{display:block;font-family:var(--serif);font-size:24px;}
.pagehero .stat span{font-family:var(--utility);font-size:12px;color:var(--ink-soft);}

section{padding:80px 0;}
.section-deep{background:var(--paper-deep);}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.32;}
.section-head p{color:var(--ink-soft);font-size:16px;margin-top:14px;}
.caveat{font-family:var(--utility);font-size:12.5px;color:var(--ink-soft);background:rgba(182,136,58,.12);border:1px solid rgba(182,136,58,.3);border-radius:10px;padding:10px 16px;display:inline-flex;gap:8px;margin-top:22px;}

.domains{display:flex;flex-direction:column;gap:14px;}
details.domain{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;}
details.domain summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;gap:16px;
  font-family:var(--utility);font-weight:600;font-size:15.5px;color:var(--ink);
}
details.domain summary::-webkit-details-marker{display:none;}
details.domain summary .n{font-family:var(--serif);font-size:20px;color:var(--gold);font-weight:700;width:30px;flex-shrink:0;}
details.domain summary .ti{flex-grow:1;}
details.domain summary .chev{width:18px;height:18px;color:var(--ink-soft);flex-shrink:0;transition:transform .25s;}
details.domain[open] summary .chev{transform:rotate(180deg);}
details.domain .body{padding:0 24px 26px 70px;}
details.domain .body p{color:var(--ink-soft);font-size:15px;margin-bottom:16px;}
.tagrow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.tagrow span{font-family:var(--utility);font-size:12.5px;background:var(--paper-deep);border:1px solid var(--line);border-radius:999px;padding:6px 14px;color:var(--ink);}
.tip{display:flex;gap:10px;align-items:flex-start;background:var(--moss-soft);border-radius:10px;padding:12px 16px;}
.tip svg{width:18px;height:18px;color:var(--moss);flex-shrink:0;margin-top:2px;}
.tip p{color:var(--ink);font-size:14px;margin:0;}

.plc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.plc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;}
.plc-card h3{font-size:17px;margin-bottom:10px;}
.plc-card p{font-size:14.5px;color:var(--ink-soft);}
.plc-card ul{display:flex;flex-direction:column;gap:8px;margin-top:12px;}
.plc-card li{font-size:14px;color:var(--ink);padding-left:16px;position:relative;}
.plc-card li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--gold);}

.ladder{display:flex;align-items:stretch;gap:0;}
.ladder .step{flex:1;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;text-align:center;}
.ladder .step .lic{font-family:var(--serif);font-size:19px;color:var(--lacquer);font-weight:700;}
.ladder .step p{font-size:13px;color:var(--ink-soft);margin-top:6px;}
.ladder .arrow{display:flex;align-items:center;justify-content:center;width:40px;color:var(--gold);flex-shrink:0;}

.next-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;}
.next-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;gap:10px;}
.next-card h3{font-size:18px;}
.next-card p{color:var(--ink-soft);font-size:14.5px;}

footer.site{background:#16233A;color:var(--paper);padding:60px 0 30px;}
.foot-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;padding-bottom:30px;border-bottom:1px solid rgba(251,247,239,.14);}
.foot-brand{display:flex;align-items:center;gap:10px;}
.foot-brand svg{width:32px;height:32px;}
.foot-brand .name{font-family:var(--serif);font-size:18px;font-weight:700;color:#fff;}
.foot-links{display:flex;gap:24px;font-family:var(--utility);font-size:14px;flex-wrap:wrap;}
.foot-links a{color:rgba(251,247,239,.85);}
.foot-links a:hover{color:var(--gold-soft);}
.foot-legal{padding-top:22px;font-size:12.5px;color:rgba(251,247,239,.5);}

@media (max-width:980px){
  .plc-grid{grid-template-columns:1fr;}
  .ladder{flex-direction:column;}
  .ladder .arrow{width:auto;height:26px;transform:rotate(90deg);}
  details.domain .body{padding-left:24px;}
}
@media (max-width:600px){section{padding:56px 0;}}