:root{
  --kh-navy:#0B2E52;
  --kh-blue:#1B5FAE;
  --kh-blue-soft:#E7F0FA;
  --kh-orange:#A8460B;
  --kh-orange-soft:#FFF1E7;
  --kh-green:#1F7A5A;
  --kh-green-soft:#EAF7F1;
  --kh-cyan:#0E7490;
  --kh-cyan-soft:#E7F7FB;
  --kh-ink:#1A1F26;
  --kh-muted:#5B6472;
  --kh-line:#D8DEE6;
  --kh-soft:#F5F7FA;
  --kh-white:#FFFFFF;
  --kh-shadow:0 12px 32px rgba(11,46,82,.10);
  --kh-shadow-sm:0 6px 18px rgba(11,46,82,.08);
  --kh-radius:24px;
  --kh-container:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body.knowledge-page{margin:0;color:var(--kh-ink);background:#fff;font-family:"Kanit",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.7}
a{color:inherit} img{max-width:100%;height:auto}
button,input,select,textarea{font:inherit} button{cursor:pointer}
.kh-container{width:min(calc(100% - 40px),var(--kh-container));margin-inline:auto}
.kh-skip{position:absolute;left:-9999px;top:0}
.kh-skip:focus{left:16px;top:16px;z-index:999;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--kh-shadow)}
.kh-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,222,230,.9)}
.kh-header-inner{min-height:74px;display:flex;align-items:center;gap:20px}
.kh-brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:220px}
.kh-brand img{width:46px;height:46px;border-radius:14px}
.kh-brand strong{display:block;color:var(--kh-navy);font-size:1.05rem}
.kh-brand small{display:block;color:var(--kh-muted);font-size:.72rem}
.kh-nav-toggle{display:none;margin-left:auto;border:1px solid var(--kh-line);background:#fff;color:var(--kh-navy);border-radius:12px;padding:9px 13px;font-weight:600}
.kh-nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.kh-nav a{text-decoration:none;color:#334155;padding:10px 11px;border-radius:10px;font-size:.88rem;font-weight:500}
.kh-nav a:hover,.kh-nav a:focus-visible{background:var(--kh-blue-soft);color:var(--kh-navy)}
.kh-nav a.active{background:var(--kh-navy);color:#fff}
.kh-hero{position:relative;overflow:hidden;padding:92px 0 74px;background:radial-gradient(circle at 85% 20%,rgba(255,178,95,.30),transparent 27%),radial-gradient(circle at 67% 70%,rgba(103,200,184,.24),transparent 29%),linear-gradient(135deg,#f8fbff 0%,#fff9f4 52%,#f3fbf8 100%)}
.kh-hero:after{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(27,95,174,.10);border-radius:50%;right:-120px;top:-120px;box-shadow:0 0 0 55px rgba(27,95,174,.035),0 0 0 110px rgba(27,95,174,.025)}
.kh-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);gap:56px;align-items:center}
.kh-eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--kh-orange);font-size:.88rem;font-weight:700;letter-spacing:.02em}
.kh-eyebrow:before{content:"";width:28px;height:3px;border-radius:99px;background:var(--kh-orange)}
.kh-hero h1{font-size:clamp(2.2rem,5vw,4.5rem);line-height:1.08;letter-spacing:-.03em;color:var(--kh-navy);margin:14px 0 20px}
.kh-hero h1 em{font-style:normal;color:var(--kh-orange)}
.kh-lead{font-size:clamp(1.02rem,1.7vw,1.25rem);color:#46576a;max-width:760px;margin:0 0 28px}
.kh-actions{display:flex;flex-wrap:wrap;gap:12px}
.kh-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 18px;border-radius:13px;text-decoration:none;font-weight:650;border:1px solid transparent;transition:.2s ease}
.kh-button.primary{background:var(--kh-navy);color:#fff;box-shadow:0 7px 20px rgba(11,46,82,.18)}
.kh-button.secondary{background:#fff;border-color:var(--kh-line);color:var(--kh-navy)}
.kh-button.orange{background:var(--kh-orange);color:#fff}
.kh-button:hover{transform:translateY(-1px)}
.kh-hero-art{position:relative;min-height:390px;display:grid;place-items:center}
.kh-orbit{position:absolute;border-radius:50%;border:1px dashed rgba(27,95,174,.24)}
.kh-orbit.one{width:330px;height:330px}
.kh-orbit.two{width:250px;height:250px;border-color:rgba(168,70,11,.26)}
.kh-core{position:relative;width:178px;height:178px;border-radius:44px;background:linear-gradient(145deg,var(--kh-navy),var(--kh-blue));box-shadow:0 26px 70px rgba(11,46,82,.24);display:grid;place-items:center;color:#fff;text-align:center;padding:20px}
.kh-core strong{font-size:2.5rem;line-height:1}.kh-core span{font-size:.86rem}
.kh-float{position:absolute;background:#fff;border:1px solid rgba(216,222,230,.9);box-shadow:var(--kh-shadow-sm);border-radius:18px;padding:11px 14px;font-size:.82rem;font-weight:600;color:var(--kh-navy)}
.kh-float.one{top:35px;right:8px}.kh-float.two{bottom:48px;left:10px}.kh-float.three{bottom:8px;right:30px}
.kh-section{padding:82px 0}.kh-section.soft{background:var(--kh-soft)}.kh-section.tint{background:linear-gradient(180deg,#fff 0%,#f6fbff 100%)}
.kh-section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
.kh-section-head>div{max-width:760px}
.kh-section h2{color:var(--kh-navy);font-size:clamp(1.7rem,3vw,2.6rem);line-height:1.18;margin:8px 0 10px}
.kh-section-head p,.kh-section>p{color:var(--kh-muted);margin:0}
.kh-grid{display:grid;gap:20px}.kh-grid.cols-4{grid-template-columns:repeat(4,1fr)}.kh-grid.cols-3{grid-template-columns:repeat(3,1fr)}.kh-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.kh-card{background:#fff;border:1px solid var(--kh-line);border-radius:var(--kh-radius);padding:24px;box-shadow:0 3px 12px rgba(11,46,82,.035);transition:.2s ease}
.kh-card:hover{transform:translateY(-3px);box-shadow:var(--kh-shadow-sm);border-color:#c6d7ea}
.kh-card-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:1.55rem;background:var(--kh-blue-soft);margin-bottom:18px}
.kh-card.orange .kh-card-icon{background:var(--kh-orange-soft)}.kh-card.green .kh-card-icon{background:var(--kh-green-soft)}.kh-card.cyan .kh-card-icon{background:var(--kh-cyan-soft)}
.kh-card h3{margin:0 0 8px;color:var(--kh-navy);font-size:1.22rem}.kh-card p{margin:0 0 16px;color:var(--kh-muted)}
.kh-card-link{display:inline-flex;gap:6px;text-decoration:none;color:var(--kh-orange);font-weight:650}.kh-card-link:hover{text-decoration:underline}
.kh-path{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;counter-reset:step}
.kh-step{position:relative;background:#fff;border:1px solid var(--kh-line);border-radius:20px;padding:22px 18px;min-height:185px}
.kh-step:before{counter-increment:step;content:counter(step);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--kh-navy);color:#fff;font-weight:700;margin-bottom:18px}
.kh-step h3{font-size:1.05rem;color:var(--kh-navy);margin:0 0 8px}.kh-step p{font-size:.9rem;color:var(--kh-muted);margin:0}
.kh-callout{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center;background:linear-gradient(135deg,var(--kh-navy),#103f70);color:#fff;border-radius:30px;padding:34px;overflow:hidden}
.kh-callout h2,.kh-callout h3{color:#fff;margin-top:0}.kh-callout p{color:#dceafb}.kh-callout .kh-tag{background:rgba(255,255,255,.12);color:#ffe0c2}
.kh-callout-art{min-height:210px;display:grid;place-items:center;position:relative}
.kh-ai-sdgs{display:grid;grid-template-columns:repeat(3,92px);gap:12px;transform:rotate(-3deg)}
.kh-ai-sdgs span{display:grid;place-items:center;aspect-ratio:1;border-radius:20px;background:rgba(255,255,255,.12);font-size:1.5rem;border:1px solid rgba(255,255,255,.14)}
.kh-tags{display:flex;flex-wrap:wrap;gap:8px}.kh-tag{display:inline-flex;align-items:center;border-radius:999px;background:var(--kh-blue-soft);color:var(--kh-navy);padding:6px 10px;font-size:.78rem;font-weight:600}
.kh-tag.orange{background:var(--kh-orange-soft);color:var(--kh-orange)}.kh-tag.green{background:var(--kh-green-soft);color:var(--kh-green)}
.kh-article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.kh-article{background:#fff;border:1px solid var(--kh-line);border-radius:20px;padding:20px}
.kh-article-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.kh-article h3{font-size:1.08rem;color:var(--kh-navy);margin:0 0 7px}.kh-article p{color:var(--kh-muted);margin:0}.kh-article .kh-meta{font-size:.78rem;color:#728096;white-space:nowrap}
.kh-tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.kh-tool{background:#fff;border:1px solid var(--kh-line);border-radius:22px;padding:22px;position:relative;overflow:hidden}
.kh-tool:before{content:"";position:absolute;inset:0 auto auto 0;width:5px;height:100%;background:var(--kh-orange)}.kh-tool h3{color:var(--kh-navy);margin:0 0 8px}.kh-tool p{color:var(--kh-muted);margin:0 0 15px}
.kh-quiz{background:#fff;border:1px solid var(--kh-line);border-radius:24px;padding:26px;box-shadow:var(--kh-shadow-sm)}.kh-quiz h3{color:var(--kh-navy);margin-top:0}
.kh-choice-list{display:grid;gap:10px;margin-top:18px}.kh-choice{border:1px solid var(--kh-line);background:#fff;border-radius:14px;padding:12px 14px;text-align:left;color:var(--kh-ink)}
.kh-choice:hover{border-color:#9fb9d5;background:#f8fbff}.kh-choice.correct{border-color:#56a184;background:#eef9f4}.kh-choice.wrong{border-color:#c46c45;background:#fff4ee}
.kh-feedback{min-height:50px;margin-top:14px;padding:12px 14px;border-radius:14px;background:var(--kh-soft);color:#445366}
.kh-filterbar{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 28px}
.kh-input,.kh-select,.kh-textarea{width:100%;border:1px solid var(--kh-line);border-radius:14px;background:#fff;padding:12px 14px;color:var(--kh-ink);outline:none}
.kh-input:focus,.kh-select:focus,.kh-textarea:focus{border-color:var(--kh-blue);box-shadow:0 0 0 3px rgba(27,95,174,.12)}.kh-filterbar .kh-input{flex:1;min-width:240px}.kh-filterbar .kh-select{width:auto;min-width:180px}
.kh-glossary{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.kh-term{border:1px solid var(--kh-line);border-radius:18px;padding:20px;background:#fff}
.kh-term h3{margin:0 0 5px;color:var(--kh-navy);font-size:1.02rem}.kh-term small{display:block;color:var(--kh-orange);font-weight:600;margin-bottom:9px}.kh-term p{color:var(--kh-muted);font-size:.92rem;margin:0}
.kh-form{display:grid;gap:17px}.kh-form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.kh-form label{font-weight:600;color:var(--kh-navy)}.kh-form label span{display:block;font-size:.78rem;color:var(--kh-muted);font-weight:400;margin-top:2px}
.kh-output{white-space:pre-wrap;background:#0d223a;color:#edf6ff;border-radius:18px;padding:20px;min-height:210px;overflow:auto}.kh-copybar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:12px}
.kh-safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.kh-safety-item{border-radius:20px;border:1px solid var(--kh-line);padding:22px;background:#fff}.kh-safety-item h3{color:var(--kh-navy);margin:0 0 8px}.kh-safety-item strong{color:var(--kh-orange)}
.kh-source{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--kh-line);border-radius:20px;padding:20px}.kh-source-logo{flex:0 0 48px;width:48px;height:48px;border-radius:15px;background:var(--kh-blue-soft);display:grid;place-items:center;font-weight:800;color:var(--kh-navy)}
.kh-source h3{margin:0;color:var(--kh-navy);font-size:1.02rem}.kh-source p{margin:4px 0 10px;color:var(--kh-muted);font-size:.9rem}.kh-source a{color:var(--kh-orange);font-weight:600}
.kh-breadcrumb{font-size:.84rem;color:var(--kh-muted);margin:22px 0 0}.kh-breadcrumb a{color:var(--kh-navy)}
.kh-subhero{padding:58px 0 46px;background:linear-gradient(135deg,#f7fbff,#fff8f2)}.kh-subhero h1{margin:8px 0 12px;color:var(--kh-navy);font-size:clamp(2rem,4vw,3.5rem);line-height:1.12}.kh-subhero p{max-width:820px;color:#4e6072;font-size:1.06rem}
.kh-stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}.kh-stat{background:#fff;border:1px solid var(--kh-line);border-radius:18px;padding:16px}.kh-stat strong{display:block;color:var(--kh-orange);font-size:1.35rem}.kh-stat span{font-size:.82rem;color:var(--kh-muted)}
.kh-footer{background:#071d34;color:#d6e2ef;padding:42px 0}.kh-footer-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:40px}.kh-footer strong{color:#fff}.kh-footer p{color:#b9c8d8;max-width:620px}
.kh-footer-links{display:flex;flex-wrap:wrap;gap:10px 18px;align-content:start;justify-content:flex-end}.kh-footer-links a{color:#d6e2ef;text-decoration:none}.kh-footer-links a:hover{text-decoration:underline}
.kh-note{border-left:4px solid var(--kh-orange);background:var(--kh-orange-soft);padding:14px 16px;border-radius:0 14px 14px 0;color:#5d3a27}.kh-source-note{font-size:.82rem;color:var(--kh-muted);margin-top:22px}.hidden{display:none!important}
@media(max-width:1000px){
  .kh-nav-toggle{display:block}
  .kh-nav{display:none;position:fixed;top:75px;left:16px;right:16px;max-height:calc(100vh - 95px);overflow:auto;background:#fff;border:1px solid var(--kh-line);box-shadow:var(--kh-shadow);border-radius:18px;padding:10px;flex-direction:column;align-items:stretch}
  .kh-nav.open{display:flex}.kh-nav a{padding:12px}.kh-hero-grid{grid-template-columns:1fr;gap:24px}.kh-hero-art{min-height:310px}
  .kh-grid.cols-4{grid-template-columns:repeat(2,1fr)}.kh-grid.cols-3,.kh-tool-grid,.kh-glossary{grid-template-columns:repeat(2,1fr)}.kh-path{grid-template-columns:repeat(3,1fr)}.kh-callout{grid-template-columns:1fr}
}
@media(max-width:720px){
  .kh-container{width:min(calc(100% - 28px),var(--kh-container))}.kh-brand{min-width:0}.kh-brand small{display:none}.kh-header-inner{min-height:66px}.kh-nav{top:67px}
  .kh-hero{padding:58px 0 50px}.kh-hero-art{min-height:260px;transform:scale(.88)}.kh-section{padding:58px 0}.kh-section-head{display:block}
  .kh-grid.cols-4,.kh-grid.cols-3,.kh-grid.cols-2,.kh-tool-grid,.kh-article-list,.kh-glossary,.kh-safety-grid{grid-template-columns:1fr}.kh-path{grid-template-columns:1fr}.kh-step{min-height:0}.kh-callout{padding:25px}
  .kh-form-row{grid-template-columns:1fr}.kh-stat-row{grid-template-columns:repeat(2,1fr)}.kh-footer-grid{grid-template-columns:1fr}.kh-footer-links{justify-content:flex-start}.kh-subhero{padding:42px 0 34px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}