:root{--bg:#0B1220;--panel:#121B2E;--line:#22304A;--ink:#E8ECF4;--mute:#A9B4C8;--mint:#5FD3B0;--mint2:#7FE0C2;--bad:#F08A6C}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Anuphan,system-ui,sans-serif;line-height:1.6;font-size:16px}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 21px}
.nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:13px;margin:16px auto 0;max-width:1120px;padding:10px 10px 10px 21px;border-radius:999px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.06em;text-decoration:none}
.brand b{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--mint);color:var(--bg);font-size:15px}
.nav .links{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.nav .links a{color:rgba(232,236,244,.78);text-decoration:none;font-size:15px;padding:10px 16px}
.btn{display:inline-block;text-align:center;border:0;cursor:pointer;font:inherit;font-weight:600;color:var(--bg);background:var(--mint);text-decoration:none;padding:14px 32px;border-radius:14px;box-shadow:0 0 32px rgba(95,211,176,.35)}
.btn:hover{background:var(--mint2)}
.btn[disabled]{opacity:.6;cursor:wait}
.btn.sm{padding:11px 22px;border-radius:999px;font-size:15px;box-shadow:none}
.btn.ghost{background:rgba(255,255,255,.04);color:var(--ink);border:1px solid rgba(255,255,255,.12);box-shadow:none}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.nav .links a.btn{color:var(--bg);padding:11px 22px;border-radius:999px;font-size:15px}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(232,236,244,.85);background:rgba(255,255,255,.04);border:1px solid rgba(95,211,176,.5);border-radius:999px;padding:6px 16px}
.card{background:rgba(255,255,255,.024);border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:24px}
h1,h2,h3{margin:0;line-height:1.3}
.mint{color:var(--mint)}
.muted{color:var(--mute)}
section{position:relative}
.glow{position:absolute;left:50%;top:-120px;width:900px;height:640px;margin-left:-450px;background:radial-gradient(closest-side,rgba(95,211,176,.42),rgba(11,18,32,0));opacity:.5;pointer-events:none}
footer{border-top:1px solid rgba(255,255,255,.07);background:#090F1B;margin-top:0}
footer .wrap{padding-top:30px;padding-bottom:30px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:13px;color:var(--mute)}
/* ฟอร์ม */
.formbox{max-width:440px;margin:0 auto;padding:60px 21px 80px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:14px;color:var(--mute)}
.field input{font:inherit;color:var(--ink);background:#0E1626;border:1px solid var(--line);border-radius:12px;padding:12px 14px;min-height:46px}
.field input:focus{outline:2px solid rgba(95,211,176,.5);border-color:var(--mint)}
.msg{font-size:14px;border-radius:10px;padding:10px 14px;margin:0 0 16px;display:none}
.msg.err{display:block;background:rgba(240,138,108,.12);border:1px solid rgba(240,138,108,.5);color:#FFC2B0}
.msg.ok{display:block;background:rgba(95,211,176,.12);border:1px solid rgba(95,211,176,.5);color:#BFF0E1}
.tabs{display:flex;gap:6px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);border-radius:999px;padding:4px;margin-bottom:24px}
.tabs button{flex:1;font:inherit;font-weight:600;font-size:15px;color:var(--mute);background:transparent;border:0;border-radius:999px;padding:10px;cursor:pointer;min-height:44px}
.tabs button[aria-selected=true]{background:var(--mint);color:var(--bg)}
.linkbtn{background:none;border:0;color:var(--mint);font:inherit;font-size:14px;cursor:pointer;padding:6px 0;text-decoration:underline}
details summary{cursor:pointer;list-style:none}
details summary::-webkit-details-marker{display:none}
details[open] .plus{transform:rotate(45deg)}
/* หน้าเอกสาร (ข้อกำหนด/นโยบาย/ติดต่อ) */
.doc{max-width:760px;margin:0 auto;padding:56px 21px 80px}
.doc h1{font-size:32px;margin-bottom:6px}
.doc h2{font-size:20px;margin:34px 0 8px;color:var(--mint)}
.doc p,.doc li{color:var(--ink);opacity:.92}
.doc ul{padding-left:22px;margin:8px 0}
.doc li{margin:4px 0}
.doc .meta{color:var(--mute);font-size:14px;margin:0 0 28px}
.doc a{color:var(--mint)}
[hidden]{display:none!important}