:root{--ink:#173c35;--paper:#fbfaf4;--lime:#d8f65a;--coral:#ff8a72;--sky:#aee6f5;--muted:#6e7772;--line:#dce2d7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans Thai",sans-serif}.site-header{height:76px;max-width:1180px;margin:auto;padding:0 26px;display:flex;align-items:center;justify-content:space-between}.brand{font:700 29px/1 "DM Sans","Noto Sans Thai",sans-serif;color:var(--ink);text-decoration:none;letter-spacing:-1.5px}.brand span{color:#8ab600}.site-header nav{display:flex;gap:30px}.site-header nav a{color:var(--ink);text-decoration:none;font-size:14px;font-weight:600}.hero{max-width:1180px;margin:0 auto;padding:92px 26px 105px;background:radial-gradient(circle at 86% 44%,var(--lime) 0 98px,transparent 99px)}.eyebrow{margin:0 0 11px;text-transform:uppercase;letter-spacing:1.1px;font:700 12px/1.4 "DM Sans","Noto Sans Thai",sans-serif;color:#75991c}.hero h1{font-size:clamp(48px,7vw,84px);letter-spacing:-4px;line-height:1.08;margin:0}.hero h1 em{font-style:normal;color:#84ad17}.hero-copy{font-size:18px;max-width:450px;margin:25px 0 30px;line-height:1.85;color:var(--muted)}.button{appearance:none;border:0;background:var(--ink);color:#fff;border-radius:999px;padding:14px 23px;text-decoration:none;font:600 15px "Noto Sans Thai",sans-serif;cursor:pointer;display:inline-flex;gap:10px;align-items:center}.button:hover{background:#285e52}.ad-slot{max-width:970px;margin:0 auto;text-align:center;color:#98a29d;background:#f0f1e9;border:1px dashed #cdd3c9;font-size:11px;letter-spacing:1px;display:grid;place-items:center}.ad-top{height:90px}.tools-section,.guide-section{max-width:1180px;margin:auto;padding:105px 26px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px}.section-heading h2,.guide-section h2{font-size:34px;letter-spacing:-1.5px;margin:0}.section-heading>p{font-size:12px;color:var(--muted);margin:0}.tool-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:18px;align-items:start}.tool-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:18px}.tool-card.active{border:2px solid var(--ink);box-shadow:8px 8px 0 var(--lime)}.card-icon{width:40px;height:40px;border-radius:12px;background:var(--lime);display:grid;place-items:center;font-size:20px;margin-bottom:18px}.card-icon.coral{background:#ffe0d9;font:700 20px "DM Sans";color:#d65741}.card-icon.blue{background:#dff7fc;font:700 20px "DM Sans";color:#287b92}.card-icon.purple{background:#ebe5ff;color:#6b55a8}.card-icon.orange{background:#ffebcb;color:#b46e00}.tool-card h3{font-size:20px;margin:0 0 5px;letter-spacing:-.7px}.card-lead{font-size:12px;color:var(--muted);margin:0 0 22px;line-height:1.6}.calculator-form{display:grid;gap:13px}.calculator-form label{font-size:12px;font-weight:600;display:grid;gap:6px}.calculator-form input,.calculator-form select{border:1px solid #cdd6cf;border-radius:8px;padding:10px;background:#fff;color:var(--ink);font:500 14px "DM Sans","Noto Sans Thai",sans-serif;width:100%}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.calculate{justify-content:center;margin-top:2px;padding:11px}.result{border-top:1px solid var(--line);margin-top:20px;padding-top:15px;display:grid;gap:2px}.result span,.result small{font-size:11px;color:var(--muted)}.result strong{font:700 26px "DM Sans","Noto Sans Thai",sans-serif;letter-spacing:-1px}.toggle{display:flex;background:#f0f3ed;padding:3px;border-radius:8px}.toggle button{flex:1;border:0;background:transparent;padding:7px 4px;color:var(--muted);font:600 11px "Noto Sans Thai",sans-serif;border-radius:6px;cursor:pointer}.toggle .selected{background:#fff;color:var(--ink);box-shadow:0 1px 3px #bcc5bc}.ad-inline{height:120px;margin-bottom:0}.guide-section{padding-top:100px}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.guide-card{background:var(--ink);color:#fff;text-decoration:none;padding:28px;border-radius:16px;min-height:230px;display:flex;flex-direction:column}.guide-card:nth-child(2){background:#e1f59a;color:var(--ink)}.guide-card:nth-child(3){background:var(--coral)}.guide-card span{font:700 14px "DM Sans";opacity:.7}.guide-card h3{font-size:20px;line-height:1.45;margin:20px 0 8px}.guide-card p{font-size:12px;line-height:1.7;margin:0;opacity:.8}.guide-card b{font-size:12px;margin-top:auto;padding-top:20px}footer{border-top:1px solid var(--line);max-width:1180px;margin:auto;padding:34px 26px 45px;display:flex;gap:20px;align-items:center;flex-wrap:wrap}footer p{font-size:12px;color:var(--muted);margin:0}.fineprint{margin-left:auto}@media(max-width:850px){.tool-grid{grid-template-columns:1fr 1fr}.tool-card.active{grid-column:span 2}.guide-grid{grid-template-columns:1fr}.hero{padding-top:65px}.ad-slot{margin-left:20px;margin-right:20px}.tools-section,.guide-section{padding-top:70px;padding-bottom:70px}}@media(max-width:560px){.site-header{padding:0 18px}.site-header nav{display:none}.hero{padding:55px 20px 70px;background:none}.hero h1{letter-spacing:-2.5px}.section-heading{align-items:start;display:block}.section-heading>p{margin-top:9px}.tools-section,.guide-section{padding-left:20px;padding-right:20px}.tool-grid,.guide-grid{grid-template-columns:1fr}.tool-card.active{grid-column:auto}.ad-top{height:72px}.ad-inline{height:100px}footer{padding-left:20px}.fineprint{margin-left:0;flex-basis:100%}}

/* Content and trust layers */
.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch}.tool-card{display:flex;flex-direction:column;height:100%}.tool-card.active{border:1px solid var(--line);box-shadow:none;grid-column:auto}.tool-card .calculator-form{margin-bottom:0}.tool-card .result{margin-top:auto}.card-icon.pink{background:#ffe1ed;color:#bd3f70}
.hero-actions{display:flex;gap:22px;align-items:center}.text-link{color:var(--ink);font-size:14px;font-weight:700}.quick-stats{display:flex;gap:26px;margin-top:58px;padding-top:20px;border-top:1px solid #d8dfc9;max-width:610px}.quick-stats span{font-size:12px;color:var(--muted)}.quick-stats b{color:var(--ink);display:block;font:700 19px "DM Sans","Noto Sans Thai",sans-serif}.article-heading{display:flex;align-items:end;justify-content:space-between}.article-heading>p{margin:0;max-width:280px;color:var(--muted);font-size:13px;line-height:1.7}.guide-card{transition:transform .2s ease,box-shadow .2s ease}.guide-card:hover{transform:translateY(-5px);box-shadow:0 12px 18px #173c3524}.trust-section{max-width:1180px;margin:0 auto 105px;padding:46px 52px;background:#eaf6dd;border-radius:24px;display:flex;justify-content:space-between;gap:45px}.trust-section h2{font-size:36px;letter-spacing:-1.8px;line-height:1.25;margin:0}.trust-points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;flex:1}.trust-points p{margin:0;display:grid;gap:7px}.trust-points b{font-size:14px}.trust-points span{font-size:12px;line-height:1.65;color:var(--muted)}.footer-links{display:flex;gap:18px}.footer-links a{font-size:12px;color:var(--ink);text-decoration:none}.article-page{max-width:850px;margin:0 auto;padding:80px 26px 100px}.article-page>h1{font-size:clamp(43px,6vw,68px);line-height:1.15;letter-spacing:-3px;margin:0}.article-intro{font-size:19px;line-height:1.75;color:var(--muted);max-width:590px;margin:24px 0 40px}.article-callout{padding:25px 28px;margin:0 0 54px;background:var(--lime);border-radius:18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.article-callout b{font-size:16px}.article-callout span{font-size:13px;line-height:1.6;flex:1;min-width:200px}.article-callout .button{padding:10px 16px;font-size:13px}.prose{max-width:680px}.prose h2{font-size:25px;letter-spacing:-1px;margin:42px 0 12px}.prose p,.prose li{color:#46564f;font-size:16px;line-height:2}.prose ul{padding-left:23px}.prose li{padding-left:6px;margin:7px 0}@media(max-width:850px){.trust-section{margin:0 20px 70px;padding:34px;display:block}.trust-points{margin-top:30px}.article-heading{align-items:start;display:block}.article-heading>p{margin-top:10px}}@media(max-width:560px){.hero-actions{gap:15px}.quick-stats{gap:12px;justify-content:space-between;margin-top:42px}.quick-stats b{font-size:15px}.quick-stats span{font-size:10px}.trust-section{padding:28px 24px}.trust-section h2{font-size:29px}.trust-points{grid-template-columns:1fr;gap:18px}.footer-links{width:100%;flex-wrap:wrap}.article-page{padding-top:45px}.article-page>h1{letter-spacing:-2px}.article-callout{display:grid}.article-callout .button{justify-content:center}.article-intro{font-size:17px}}
.contact-email{font:700 clamp(20px,4vw,32px) "DM Sans","Noto Sans Thai",sans-serif;color:#769c16;text-decoration:none;overflow-wrap:anywhere}
@media(max-width:850px){.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.tool-grid{grid-template-columns:1fr}}