:root{
  --bg:#f6f5f0; --surface:#ffffff; --ink:#15201c; --muted:#5d6b65; --line:#e3e1d8;
  --accent:#1a6b4f; --accent-soft:#e3f2ea; --badge:#fff4d6; --badge-ink:#7a5600;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1513; --surface:#171f1c; --ink:#e8eee9; --muted:#9aaaa2; --line:#26322d;
    --accent:#6fd3a4; --accent-soft:#16302a; --badge:#3a2f12; --badge-ink:#f3d27a;
  }
}
:root[data-theme="dark"]{
  --bg:#0f1513; --surface:#171f1c; --ink:#e8eee9; --muted:#9aaaa2; --line:#26322d;
  --accent:#6fd3a4; --accent-soft:#16302a; --badge:#3a2f12; --badge-ink:#f3d27a;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"IBM Plex Sans Thai",system-ui,sans-serif;line-height:1.65;font-size:17px}
a{color:var(--accent)}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
.narrow{max-width:760px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink);text-decoration:none}
.logo img{width:32px;height:32px;border-radius:8px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;flex:none}
.lang button{border:0;background:transparent;color:var(--muted);padding:6px 12px;font:inherit;font-size:14px;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.hero{padding:40px 0 24px;display:grid;gap:28px}
.badge{display:inline-block;font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;background:var(--badge);color:var(--badge-ink)}
h1{font-size:clamp(28px,5.5vw,44px);line-height:1.25;margin:14px 0 14px;letter-spacing:-.01em}
.lead{font-size:clamp(17px,2.3vw,19px);color:var(--muted);margin:0 0 20px;max-width:640px}
.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn{display:inline-block;background:var(--ink);color:var(--bg);text-decoration:none;padding:11px 20px;border-radius:999px;font-weight:600;font-size:15px}
.btn[aria-disabled="true"]{opacity:.55;cursor:default}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.shot{width:100%;height:auto;border-radius:14px;border:1px solid var(--line);display:block;background:#000}
section{padding:32px 0}
h2{font-size:24px;margin:0 0 18px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.step .shot{border:0;border-radius:0;border-bottom:1px solid var(--line)}
.step div{padding:16px 18px}
.step b{display:block;margin-bottom:4px}
.step span{color:var(--muted);font-size:15.5px}
.num{font:600 13px "IBM Plex Mono",monospace;color:var(--accent)}
ul.checks{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px 24px}
ul.checks li{padding-left:26px;position:relative}
ul.checks li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.box{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px}
.box p{margin:0 0 10px;color:var(--muted)}
.box p:last-child{margin:0}
footer{padding:32px 0 48px;color:var(--muted);font-size:14px;display:flex;flex-wrap:wrap;gap:8px 20px}
footer a{color:var(--muted)}
/* policy */
.policy h1{font-size:clamp(26px,5vw,36px)}
.policy h2{font-size:20px;margin:32px 0 10px}
.policy p,.policy li{color:var(--ink)}
.policy .meta{color:var(--muted);font-size:15px}
.policy table{width:100%;border-collapse:collapse;font-size:15.5px;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.policy th,.policy td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.policy tr:last-child td{border-bottom:0}
.policy code{font-family:"IBM Plex Mono",monospace;font-size:.88em;background:var(--accent-soft);padding:1px 5px;border-radius:5px;word-break:break-word}
.tablewrap{overflow-x:auto}
[data-en]{display:none}
html[lang="en"] [data-th]{display:none}
html[lang="en"] [data-en]{display:revert}
@media (max-width:600px){h1 br{display:none}}