:root{--bg:#070b18;--surface:#0f1628;--surface2:#151f35;--ink:#f5f7ff;--muted:#9da9c1;--line:#26334e;--primary:#5b7cff;--primary2:#8b5cf6;--cyan:#37d7ff;--gold:#ffd37c;--green:#1fc76a;--shadow:0 28px 80px rgba(0,0,0,.32)}
html[data-theme=light]{--bg:#f7f9fd;--surface:#fff;--surface2:#eef2f8;--ink:#0b1225;--muted:#657086;--line:#dfe5ef;--shadow:0 25px 70px rgba(15,30,65,.14)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Noto Sans Thai",sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}img{display:block;max-width:100%}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.container{width:min(1200px,calc(100% - 40px));margin:auto}.section{padding:90px 0}.eyebrow{color:var(--cyan);font-size:11px;font-weight:900;letter-spacing:1.5px}.section-head{max-width:780px;margin:0 auto 42px;text-align:center}.section-head.left{text-align:left;margin-left:0}.section-head h1,.section-head h2{font-size:clamp(36px,4.2vw,54px);line-height:1.16;margin:10px 0}.section-head p{color:var(--muted)}
.nav-shell{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav{height:74px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:12px;margin-right:auto}.brand img{width:44px;height:44px;object-fit:contain;background:#fff;border-radius:12px;padding:4px}.brand span{display:flex;flex-direction:column;line-height:1.1}.brand b{font-size:18px}.brand small{font-size:9px;color:var(--muted);margin-top:6px;letter-spacing:1px}.nav-links{display:flex;gap:22px}.nav-links a{font-size:14px;font-weight:800}.nav-links a.active,.nav-links a:hover{color:var(--cyan)}.theme-btn,.menu-btn{width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink)}.menu-btn{display:none}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 20px;border-radius:13px;border:1px solid transparent;font-weight:900;cursor:pointer}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}.btn-line{background:var(--green);color:#fff}.btn-ghost{background:var(--surface);border-color:var(--line)}.btn-light{background:#fff;color:#0b1225}
.page-hero{padding:80px 0 50px;background:radial-gradient(circle at 75% 15%,rgba(99,102,241,.18),transparent 34%),var(--bg)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px}
.footer{background:#050914;color:#fff;padding-top:55px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:42px}.footer a{display:block;color:#b8c2d6;margin:7px 0}.footer small,.footer p{color:#9da9bf}.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.08);padding:16px;color:#7f8aa0;font-size:12px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:900;margin-bottom:15px}input,select,textarea{width:100%;padding:13px 14px;border-radius:13px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}textarea{resize:vertical}
.mobile-cta{display:none}
@media(max-width:900px){.nav-links{display:none;position:absolute;top:68px;left:14px;right:14px;flex-direction:column;background:var(--surface);padding:14px;border:1px solid var(--line);border-radius:18px}.nav-links.open{display:flex}.menu-btn{display:block}.nav-cta{display:none}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.container{width:min(100% - 28px,1200px)}.section{padding:68px 0}.form-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.mobile-cta{display:grid;grid-template-columns:.7fr 1.3fr;position:fixed;left:12px;right:12px;bottom:12px;z-index:70;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:var(--shadow)}.mobile-cta a{display:grid;place-items:center;min-height:46px;border-radius:11px;font-weight:900}.mobile-cta a:last-child{background:var(--green);color:#fff}body{padding-bottom:74px}}