:root{
  --bg:#F6F1E7; --surface:#FFFDF8; --surface-2:#EFE8DA; --ink:#1D261E; --muted:#5A6558;
  --green:#2E5B3A; --green-2:#3F7A4E; --green-soft:#E3ECDF; --gold:#A87A30; --gold-soft:#F3E6CC;
  --line:#E2D8C6; --danger:#B3261E; --focus:#3F7A4E;
  --radius:14px; --shadow:0 1px 2px rgba(30,40,30,.06),0 8px 24px rgba(30,40,30,.06);
  --serif:"Fraunces","Noto Serif Thai",Georgia,serif;
  --sans:"IBM Plex Sans Thai","IBM Plex Sans",system-ui,-apple-system,"Segoe UI","Leelawadee UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#111611; --surface:#182019; --surface-2:#1F2920; --ink:#ECEAE2; --muted:#A4AEA1;
    --green:#8FC79D; --green-2:#A9D7B3; --green-soft:#1E2E22; --gold:#D8B06C; --gold-soft:#2C2618;
    --line:#2A352B; --danger:#FF8A80; --focus:#A9D7B3; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#111611; --surface:#182019; --surface-2:#1F2920; --ink:#ECEAE2; --muted:#A4AEA1;
  --green:#8FC79D; --green-2:#A9D7B3; --green-soft:#1E2E22; --gold:#D8B06C; --gold-soft:#2C2618;
  --line:#2A352B; --danger:#FF8A80; --focus:#A9D7B3; --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--sans);text-rendering:optimizeLegibility}
img,svg,canvas{max-width:100%}
a{color:var(--green);text-underline-offset:3px}
a:hover{color:var(--green-2)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.4rem)}
h2{font-size:clamp(1.45rem,3vw,2rem);margin-top:1.6em}
h3{font-size:1.2rem;margin-top:1.3em}
p{margin:0 0 1em}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--surface);padding:8px 12px;z-index:99}

/* header */
.site-h{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-h .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-weight:700;font-size:1.3rem}
.brand svg{width:30px;height:30px}
.brand small{display:block;font:500 .68rem/1 var(--sans);color:var(--muted);letter-spacing:.02em;margin-top:2px}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{color:var(--ink);text-decoration:none;padding:8px 12px;border-radius:10px;font-weight:500;font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{background:var(--green-soft);color:var(--green)}
.lang{border:1px solid var(--line);border-radius:999px;padding:5px 11px!important;font-size:.85rem!important}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 10px;color:var(--ink);font:inherit}
@media (max-width:820px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 16px}
  .nav.open{display:flex}
  .lang{align-self:flex-start}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 18px;font:600 1rem/1.2 var(--sans);cursor:pointer;text-decoration:none;transition:transform .08s ease,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--green);color:#fff}
:root[data-theme="dark"] .btn-primary{color:#0f1a12}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn-primary{color:#0f1a12}}
.btn-primary:hover{background:var(--green-2);color:#fff}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}
.btn-sm{padding:8px 12px;font-size:.9rem;border-radius:10px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* hero */
.hero{padding:72px 0 40px}
.hero .eyebrow{display:inline-block;font-weight:600;font-size:.85rem;color:var(--gold);background:var(--gold-soft);padding:5px 10px;border-radius:999px;margin-bottom:18px}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:640px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-art{background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden;aspect-ratio:4/3;position:relative}
.hero-art img{width:100%;height:100%;object-fit:cover;display:block}
.hero-art .tag{position:absolute;left:12px;bottom:12px;background:rgba(17,22,17,.78);color:#fff;font-size:.8rem;padding:6px 10px;border-radius:8px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 12px}
.fine{font-size:.88rem;color:var(--muted)}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero{padding-top:40px}}

/* sections & cards */
section{padding:34px 0}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:860px){.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{margin-top:0}
.card .ico{width:40px;height:40px;border-radius:12px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;margin-bottom:12px}
.card a.more{font-weight:600;text-decoration:none}
.band{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pill{display:inline-block;font-size:.78rem;font-weight:600;padding:3px 9px;border-radius:999px;background:var(--green-soft);color:var(--green)}
.pill.beta{background:var(--gold-soft);color:var(--gold)}
.callout{border-left:4px solid var(--gold);background:var(--gold-soft);padding:14px 18px;border-radius:0 12px 12px 0;margin:1.2em 0}
.callout.green{border-color:var(--green);background:var(--green-soft)}
.wf{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center}
.wf .seal{width:84px;height:84px}
@media (max-width:600px){.wf{grid-template-columns:1fr}}

/* article */
.article{padding:48px 0 30px}
.article .meta{color:var(--muted);font-size:.92rem;margin-bottom:24px}
.article ul,.article ol{padding-left:1.3em}
.article li{margin:.3em 0}
.article table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.95rem}
.article th,.article td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.article th{background:var(--surface-2)}
.table-scroll{overflow-x:auto}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:10px}
.crumbs a{color:var(--muted)}
figure{margin:1.4em 0}
figcaption{font-size:.88rem;color:var(--muted);margin-top:6px}
code,kbd{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:1px 5px;border-radius:5px}

/* footer */
.site-f{border-top:1px solid var(--line);margin-top:40px;padding:36px 0 50px;color:var(--muted);font-size:.92rem}
.site-f .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.site-f h4{font-family:var(--sans);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink);margin:0 0 10px}
.site-f ul{list-style:none;padding:0;margin:0}
.site-f li{margin:5px 0}
.site-f a{color:var(--muted)}
@media (max-width:720px){.site-f .cols{grid-template-columns:1fr}}

/* ---------- scanner ---------- */
.scanner{padding:36px 0}
.sc-grid{display:grid;grid-template-columns:340px 1fr;gap:24px;align-items:start}
@media (max-width:960px){.sc-grid{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.panel h2{font-size:1.15rem;margin:0 0 12px}
.drop{border:2px dashed var(--line);border-radius:14px;padding:22px;text-align:center;background:var(--bg);transition:border-color .15s,background .15s}
.drop.over{border-color:var(--green);background:var(--green-soft)}
.drop p{margin:.3em 0}
.btn-col{display:grid;gap:8px;margin-top:12px}
.field{display:grid;gap:6px;margin:14px 0}
.field label{font-weight:600;font-size:.92rem}
.field .hint{font-size:.82rem;color:var(--muted)}
select,input[type=number],input[type=text]{width:100%;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:9px 10px}
input[type=range]{width:100%;accent-color:var(--green)}
details.adv summary{cursor:pointer;font-weight:600;font-size:.92rem;margin-top:8px}
.privacy{display:flex;gap:10px;align-items:flex-start;font-size:.85rem;color:var(--muted);margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.stage{position:relative;background:#0c0f0c;border-radius:12px;overflow:hidden;min-height:260px;display:grid;place-items:center}
.stage canvas{display:block;width:100%;height:auto;cursor:zoom-in}
.stage .empty{color:#bfc6bd;text-align:center;padding:40px 20px;font-size:.95rem}
.stage-tools{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.legend{display:flex;flex-wrap:wrap;gap:10px 16px;font-size:.82rem;color:var(--muted);margin:8px 0 0}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:12px;height:12px;border-radius:3px;display:inline-block}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.stat .k{font-size:.8rem;color:var(--muted);font-weight:600}
.stat .v{font:600 1.7rem/1.1 var(--serif);margin-top:4px}
.stat .s{font-size:.78rem;color:var(--muted);margin-top:3px}
.bars{display:grid;gap:8px;margin:10px 0}
.bar{display:grid;grid-template-columns:150px 1fr 110px;gap:10px;align-items:center;font-size:.9rem}
@media (max-width:560px){.bar{grid-template-columns:110px 1fr 84px;font-size:.82rem}}
.bar .track{height:12px;background:var(--surface-2);border-radius:99px;overflow:hidden}
.bar .fill{height:100%;border-radius:99px}
.bar .num{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}
.res-sec{margin-top:22px}
.res-sec h3{font-family:var(--sans);font-size:1rem;margin:0 0 8px;display:flex;align-items:center;gap:8px}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px}
.kv div{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:.9rem}
.kv b{display:block;font-size:1.05rem}
.warns{display:grid;gap:8px;margin:12px 0}
.warn{background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 35%,transparent);border-radius:10px;padding:10px 12px;font-size:.9rem}
.flags{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.flag{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:6px;font-size:.78rem;text-align:center;cursor:pointer}
.flag canvas{width:100%;height:auto;border-radius:6px;background:#000;display:block;margin-bottom:4px}
.flag:hover{border-color:var(--danger)}
.hist{width:100%;height:150px;display:block}
.spinner{width:22px;height:22px;border:3px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.hidden{display:none!important}
.wf-cta{margin-top:24px;display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center}
@media (max-width:700px){.wf-cta{grid-template-columns:1fr}}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:860px){.calc{grid-template-columns:1fr}}
.out-big{font:600 2rem/1.1 var(--serif)}
@media print{
  .site-h,.site-f,.no-print,.panel.controls{display:none!important}
  body{background:#fff;color:#000}
  .sc-grid{grid-template-columns:1fr}
  .panel{box-shadow:none;border:0}
}
.stage.zoom{overflow:auto;max-height:80vh;display:block}
.stage.zoom canvas{width:auto;max-width:none;cursor:zoom-out}