:root{--bg:#f5faf8;--ink:#0e2624;--mut:#4b6460;--pri:#0f766e;--pri2:#064e4b;--soft:#e2f2ee;--acc:#ea580c;--acc2:#c2410c;--line:#d3e5e0;--card:#fff;--warn:#fff7ed;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:'Noto Sans Thai',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;font-size:17px;-webkit-text-size-adjust:100%}
img,svg{max-width:100%}a{color:var(--pri2);text-underline-offset:3px}a:hover{color:var(--acc2)}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px 14px;z-index:99}
.hdr{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:66px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--pri2);font-weight:800;font-size:18px;line-height:1.2}
.logo small{display:block;font-weight:500;font-size:12px;color:var(--mut)}
.logo-mark{width:38px;height:38px;border-radius:10px;background:var(--pri);display:grid;place-items:center;flex:none}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--ink);font-size:15px;padding:7px 11px;border-radius:8px;font-weight:500}
.nav a:hover,.nav a[aria-current]{background:var(--soft);color:var(--pri2)}
.nav a.btn{color:#fff;margin-left:6px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px;color:var(--ink);cursor:pointer}
.btn{display:inline-block;background:var(--acc);color:#fff;text-decoration:none;font-weight:700;padding:10px 20px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;font-size:16px;box-shadow:0 3px 0 var(--acc2);transition:transform .1s}
.btn:hover{background:var(--acc2);color:#fff;transform:translateY(-1px)}
.btn.lg{padding:14px 28px;font-size:18px}.btn.ghost{background:#fff;color:var(--pri2);box-shadow:0 0 0 2px var(--pri) inset}
.btn.ghost:hover{background:var(--soft);color:var(--pri2)}
.hero{background:linear-gradient(135deg,#064e4b 0%,#0f766e 60%,#14917f 100%);color:#fff;padding:56px 0 64px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-80px;top:-60px;width:380px;height:380px;border-radius:50%;background:rgba(253,186,116,.16)}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .9fr;gap:36px;align-items:center}
.hero h1{font-size:clamp(28px,4.6vw,46px);line-height:1.25;margin:10px 0 14px;font-weight:800}
.hero p.lead{font-size:19px;color:#d6f1ec;margin:0 0 22px}
.chip{display:inline-block;background:rgba(255,255,255,.14);padding:4px 14px;border-radius:999px;font-size:14px;font-weight:600}
.hero .btn.ghost{background:transparent;color:#fff;box-shadow:0 0 0 2px #fff inset}.hero .btn.ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:var(--r);padding:16px}
.stat b{display:block;font-size:30px;line-height:1.1;color:#fed7aa}.stat span{font-size:14px;color:#d6f1ec}
.sec{padding:52px 0}.sec.alt{background:#fff;border-block:1px solid var(--line)}
.sec h2{font-size:clamp(23px,3vw,31px);margin:0 0 8px;line-height:1.3;color:var(--pri2)}
.sec .sub{color:var(--mut);margin:0 0 28px;max-width:720px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card h3{margin:0 0 6px;font-size:19px;color:var(--pri2);line-height:1.4}.card p{margin:0;color:var(--mut);font-size:16px}
a.card{display:block;text-decoration:none;color:inherit;transition:box-shadow .15s,transform .15s}a.card:hover{box-shadow:0 8px 24px rgba(15,118,110,.14);transform:translateY(-2px)}
.ico{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--soft);margin-bottom:10px}
.ico svg{width:24px;height:24px;fill:none;stroke:var(--pri);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ctaband{display:flex;gap:22px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:linear-gradient(120deg,var(--pri2),var(--pri));color:#fff;border-radius:18px;padding:28px 30px;margin:34px 0}
.ctaband h3{margin:0 0 4px;font-size:22px;color:#fff}.ctaband p{margin:0;color:#d6f1ec;max-width:620px;font-size:16px}
.page-hero{background:linear-gradient(135deg,#064e4b,#0f766e);color:#fff;padding:34px 0 36px}
.page-hero h1{font-size:clamp(26px,4vw,38px);line-height:1.3;margin:10px 0 10px;font-weight:800}
.page-hero .lead{color:#d6f1ec;font-size:18px;max-width:820px}.crumbs{font-size:14px;color:#b8e3db}.crumbs a{color:#fff}
.kicker{display:inline-block;background:var(--acc);color:#fff;font-size:13px;font-weight:700;padding:2px 12px;border-radius:999px}
.meta{font-size:14px;color:#b8e3db;margin-top:10px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;padding:36px 20px 20px}
.prose h2{font-size:26px;color:var(--pri2);margin:38px 0 10px;line-height:1.35;scroll-margin-top:84px}
.prose h3{font-size:20px;margin:26px 0 6px;color:var(--ink)}.prose p,.prose li{color:#1d3a37}.prose ul,.prose ol{padding-left:24px}.prose li{margin:5px 0}
.prose .small,.small{font-size:14.5px;color:var(--mut)}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 22px;margin-bottom:22px}.toc b{color:var(--pri2)}.toc ol{margin:6px 0 0;padding-left:22px}.toc li{margin:2px 0}
.warn{background:var(--warn);border:1px solid #fed7aa;border-left:5px solid var(--acc);border-radius:10px;padding:12px 18px;margin:18px 0}.warn p{margin:0;color:#7c2d12}
.tip{background:var(--soft);border-left:5px solid var(--pri);border-radius:10px;padding:12px 18px;margin:18px 0}.tip p{margin:0}
.side{position:sticky;top:84px;align-self:start;display:flex;flex-direction:column;gap:16px}
.sidecta{background:linear-gradient(150deg,var(--pri2),var(--pri));color:#fff;border-radius:var(--r);padding:20px}
.sidecta b{font-size:18px}.sidecta p{font-size:15px;color:#d6f1ec;margin:6px 0 14px}
.sidebox{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}.sidebox ul{margin:6px 0 0;padding-left:20px;font-size:15px}
.tw{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:12px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:640px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);color:var(--pri2);font-weight:700;white-space:nowrap}tr:last-child td{border-bottom:0}
td.n,th.n{text-align:right;font-variant-numeric:tabular-nums}
tbody tr:hover{background:#f3faf8}
.badge{display:inline-block;font-size:12.5px;font-weight:700;padding:1px 10px;border-radius:999px;background:var(--soft);color:var(--pri2);white-space:nowrap}
.tool{background:#fff;border:2px solid var(--pri);border-radius:18px;padding:22px;margin:22px 0}
.tool h3{margin:0 0 14px;color:var(--pri2);font-size:21px}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:14px}
.f label{display:block;font-weight:600;font-size:14.5px;margin-bottom:4px}
.f input,.f select{width:100%;padding:10px 12px;border:1px solid #a9c8c1;border-radius:10px;font:inherit;background:#fff}
.f.chk label{display:flex;gap:8px;align-items:center;font-weight:500;margin-top:26px}.f.chk input{width:auto}
.tool-out{margin-top:6px}.tool-out .cnt{font-weight:700;color:var(--pri2);margin-bottom:6px}
.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;color:var(--pri2)}.faq .a{padding:0 0 14px;color:#1d3a37}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps li{counter-increment:s;position:relative;padding:4px 0 14px 54px}
.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;background:var(--pri);color:#fff;font-weight:800;display:grid;place-items:center}
.ftr{background:var(--pri2);color:#c7e6e0;padding:44px 0 90px;margin-top:40px;font-size:15px}
.ftr h4{color:#fff;margin:0 0 8px;font-size:16px}.ftr ul{list-style:none;padding:0;margin:0}.ftr li{margin:4px 0}.ftr a{color:#c7e6e0}.ftr a:hover{color:#fdba74}
.fg{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:28px}
.disc{margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);font-size:13.5px;color:#a8d3cb;line-height:1.7}
.mcta{display:none}
@media(max-width:960px){.layout{grid-template-columns:1fr}.side{position:static}.hero .wrap{grid-template-columns:1fr}.g3,.g4{grid-template-columns:repeat(2,1fr)}.fg{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.burger{display:block}.nav{display:none;position:absolute;left:0;right:0;top:66px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 20px 16px}.nav.open{display:flex}.nav a.btn{text-align:center;margin:8px 0 0}.mcta{display:block;position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:9px 14px;z-index:60}.mcta .btn{display:block;text-align:center}}
@media(max-width:640px){body{font-size:16px}.g2,.g3,.g4{grid-template-columns:1fr}.fg{grid-template-columns:1fr}.hero{padding:36px 0 44px}.ctaband{padding:22px}.sec{padding:38px 0}}
@media(max-width:400px){.wrap{padding:0 14px}.stats{grid-template-columns:1fr}}