:root{--ink:#171427;--paper:#f6f2e9;--violet:#6551dc;--lime:#caff54;--coral:#ff6d58}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 2px 2px,rgba(23,20,39,.09) 1px,transparent 1px) 0 0/24px 24px,var(--paper);color:var(--ink);font-family:Arial,"Noto Sans Thai",sans-serif}header,main,footer{width:min(880px,calc(100% - 40px));margin:auto}header{height:78px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(23,20,39,.16)}header a{color:var(--ink);font-weight:900;text-decoration:none}.brand{font-size:24px}.brand i{color:var(--coral)}.tool-link{background:var(--lime);border:2px solid var(--ink);border-radius:8px;padding:10px 14px;box-shadow:3px 3px 0 var(--ink)}main{padding:72px 0}small{display:inline-block;background:var(--lime);border:1px solid var(--ink);padding:6px 10px;font-weight:900;letter-spacing:.08em}h1{font-size:clamp(42px,8vw,74px);line-height:.95;letter-spacing:-.06em;margin:24px 0}h1 em{color:var(--violet);font-style:normal}p,li{color:#5b5767;font-size:17px;line-height:1.75}.cta{margin:38px 0;padding:30px;border:2px solid var(--ink);border-radius:18px;background:var(--violet);color:white;box-shadow:9px 9px 0 var(--ink)}.cta h2{font-size:28px;margin:0 0 10px}.cta p{color:rgba(255,255,255,.78);margin:0 0 20px}.cta a{display:inline-block;background:var(--lime);color:var(--ink);border:2px solid var(--ink);border-radius:8px;padding:12px 18px;font-weight:900;text-decoration:none}section{margin-top:45px}h2{font-size:27px;letter-spacing:-.03em}nav{display:flex;flex-wrap:wrap;gap:9px;margin-top:45px}nav a{color:var(--violet)}footer{padding:25px 0 35px;border-top:1px solid rgba(23,20,39,.16);color:#77727e;font-size:12px}@media(max-width:600px){main{padding-top:45px}.tool-link{font-size:11px}}