@font-face{font-family:'Sarabun';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/sarabun-thai-400.woff2) format('woff2');unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/sarabun-latin-400.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/sarabun-thai-600.woff2) format('woff2');unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/sarabun-latin-600.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/sarabun-thai-700.woff2) format('woff2');unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/sarabun-latin-700.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:800;font-display:swap;src:url(../fonts/sarabun-thai-800.woff2) format('woff2');unicode-range:U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Sarabun';font-style:normal;font-weight:800;font-display:swap;src:url(../fonts/sarabun-latin-800.woff2) format('woff2');unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122}

:root{
  --bg:#0b0b0c; --bg2:#0d0d0e; --bg3:#111216;
  --card1:#111216; --card2:#0b0e13;
  --accent:#ff4500; --accent2:#ff6347; --gold:#ffc44d;
  --line:rgba(255,255,255,.10); --line2:rgba(255,255,255,.06);
  --text:#eef1f5; --muted:#a5afbd; --radius:16px; --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:400 16.5px/1.85 'Sarabun',system-ui,-apple-system,'Sukhumvit Set',sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ── ticker ── */
.ticker{position:relative;overflow:hidden;background:linear-gradient(180deg,#0d0d0e,#0b0b0c);
  border-bottom:1px solid var(--line2);pointer-events:none}
.ticker::before,.ticker::after{content:"";position:absolute;top:0;bottom:0;width:54px;z-index:2}
.ticker::before{left:0;background:linear-gradient(90deg,#0c0c0d,transparent)}
.ticker::after{right:0;background:linear-gradient(270deg,#0c0c0d,transparent)}
.ticker__track{display:flex;width:max-content;animation:scrollx 42s linear infinite}
.ticker:hover .ticker__track{animation-play-state:paused}
.ticker__items{display:flex;align-items:center;gap:10px;margin:0;padding:9px 12px;list-style:none;white-space:nowrap}
.ticker__items li{display:flex;align-items:center;gap:7px;padding:8px 14px;font-weight:700;font-size:14px;
  border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14)}
.ticker__items b{color:var(--gold)}
@keyframes scrollx{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ── header ── */
.hdr{position:sticky;top:0;z-index:900;background:rgba(11,11,12,.94);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line2)}
.hdr__in{display:flex;align-items:center;gap:18px;padding:11px 18px;max-width:var(--maxw);margin:0 auto}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.logo img{height:38px;width:auto}
.logo__txt{font-weight:800;font-size:20px;letter-spacing:.5px;color:#fff;line-height:1}
.logo__txt i{font-style:normal;color:var(--accent)}
.nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
.nav a{position:relative;color:#e6eaf0;font-weight:600;font-size:15px;padding:.35em .7em;display:inline-block}
.nav a:hover{color:#fff;text-decoration:none}
.nav a::after{content:"";position:absolute;left:.7em;right:.7em;bottom:-6px;height:2px;
  background:linear-gradient(90deg,var(--accent),transparent);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .25s}
.nav a:hover::after{transform:scaleX(1)}
.cta{display:flex;gap:10px;align-items:center;flex:0 0 auto;white-space:nowrap}
.btn,.btn-ghost{display:inline-block;padding:12px 20px;font-size:16px;font-weight:800;line-height:1;
  border-radius:36px;text-decoration:none;transition:transform .22s,box-shadow .22s,background .22s}
.btn{background:var(--accent);color:#fff;box-shadow:0 0 18px rgba(255,69,0,.45)}
.btn:hover{background:linear-gradient(90deg,var(--accent),var(--accent2));transform:translateY(-2px);
  box-shadow:0 6px 24px rgba(255,69,0,.55);text-decoration:none;color:#fff}
.btn-ghost{background:transparent;color:#fff;border:2px solid var(--accent)}
.btn-ghost:hover{background:var(--accent);color:#fff;text-decoration:none}
.burger{display:none;background:none;border:1px solid var(--line);color:#fff;border-radius:10px;
  padding:8px 11px;font-size:18px;line-height:1;cursor:pointer}

/* ── hero ── */
.hero{position:relative;overflow:hidden;isolation:isolate;background:#0c0c0d;
  border:1px solid #1a1b1d;border-radius:22px;margin:22px auto 0;max-width:var(--maxw)}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:50% 72%;opacity:.9;filter:saturate(1.06)}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:radial-gradient(115% 85% at 50% 10%,rgba(11,11,12,.42),rgba(11,11,12,.88) 72%)}
.hero__in{position:relative;z-index:1;padding:clamp(34px,6vw,58px) 22px;text-align:center}
.hero h1{margin:0 0 14px;font-weight:800;font-size:clamp(27px,4.6vw,43px);line-height:1.22;color:#fff}
.hero h1 .a{color:var(--accent)}
.hero .lead{max-width:880px;margin:0 auto 26px;font-size:clamp(14.5px,2vw,16.5px);color:#f0f3f7}
.hero .cta{justify-content:center;flex-wrap:wrap;gap:14px;margin-top:8px}
.hero .chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:22px 0 0}
.hero .chips span{font-size:13.5px;font-weight:700;padding:7px 13px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);color:#e9eef5}

/* ── sections ── */
.sec{margin:44px auto;max-width:var(--maxw);padding:0 18px}
.sec--tight{margin:30px auto}
h2{display:inline-flex;align-items:center;gap:10px;margin:34px 0 14px;
  font-weight:800;font-size:clamp(21px,3vw,27px);line-height:1.35;color:#fff}
h2::after{content:"";display:block;flex:0 0 auto;width:64px;height:4px;border-radius:2px;
  background:linear-gradient(90deg,rgba(255,60,0,1),rgba(255,60,0,0))}
h3{display:inline-flex;align-items:center;gap:9px;margin:26px 0 10px;font-weight:700;
  font-size:clamp(18px,2.4vw,21px);line-height:1.45;color:#fff}
h3::after{content:"";display:block;flex:0 0 auto;width:56px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,rgba(255,60,0,1),rgba(255,60,0,0))}
h4{margin:20px 0 8px;font-weight:700;font-size:17.5px;color:#fff}
p{margin:0 0 15px;color:#dbe2ea}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin:0 0 8px;color:#dbe2ea}
strong,b{color:#fff;font-weight:700}

/* ── cards & grids ── */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{display:flex;flex-direction:column;background:linear-gradient(180deg,var(--card1),var(--card2));
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .24s,box-shadow .24s,border-color .24s}
.card:hover{transform:translateY(-3px);border-color:rgba(255,69,0,.45);
  box-shadow:0 14px 34px rgba(0,0,0,.55)}
.card__img{aspect-ratio:16/9;overflow:hidden;background:#141519}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card__img img{transform:scale(1.05)}
.card__body{padding:15px 16px 18px;display:flex;flex-direction:column;gap:7px;flex:1}
.card__body h3{margin:0;font-size:18px}
.card__body h3::after{display:none}
.card__body p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.7}
.card__body .btn,.card__body .btn-ghost{margin-top:auto;align-self:flex-start;padding:10px 17px;font-size:14.5px}
.badge{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.3px;padding:4px 10px;
  border-radius:999px;background:rgba(255,69,0,.16);color:#ff8f5e;border:1px solid rgba(255,69,0,.35)}

/* feature / why */
.why{display:grid;gap:14px;grid-template-columns:repeat(4,minmax(0,1fr));margin:18px 0}
.why__i{background:linear-gradient(180deg,#111216,#0b0e13);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 16px;transition:transform .22s,border-color .22s}
.why__i:hover{transform:translateY(-3px);border-color:rgba(255,69,0,.4)}
.why__i .ic{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,69,0,.13);border:1px solid rgba(255,69,0,.3);font-size:19px;margin-bottom:11px}
.why__i h3{margin:0 0 6px;font-size:16.5px;display:block}
.why__i h3::after{display:none}
.why__i p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}

/* steps */
.steps{counter-reset:s;display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));margin:18px 0}
.step{position:relative;background:linear-gradient(180deg,#111216,#0b0e13);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 16px 18px}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:16px;
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;background:var(--accent);
  box-shadow:0 0 16px rgba(255,69,0,.5)}
.step h3{margin:10px 0 7px;font-size:16.5px;display:block}
.step h3::after{display:none}
.step p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}

/* table */
.tw{overflow-x:auto;margin:16px 0 20px;border:1px solid var(--line);border-radius:14px;background:#0e1013}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line2);vertical-align:top}
th{background:rgba(255,69,0,.10);color:#fff;font-weight:800;font-size:14.5px;white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(255,255,255,.03)}

/* note / callout */
.note{background:linear-gradient(180deg,rgba(255,69,0,.10),rgba(255,69,0,.03));
  border:1px solid rgba(255,69,0,.3);border-left:4px solid var(--accent);
  border-radius:12px;padding:15px 17px;margin:18px 0}
.note p:last-child{margin:0}
.note strong{color:#ffb08a}

/* faq */
.faq{margin:18px 0}
.faq details{background:linear-gradient(180deg,#111216,#0b0e13);border:1px solid var(--line);
  border-radius:12px;margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:15px 18px;font-weight:700;font-size:16.5px;
  color:#fff;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:22px;font-weight:800;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line2)}
.faq .ans{padding:14px 18px 16px}
.faq .ans p{margin:0;font-size:15px;color:#cbd4de}

/* toc */
.toc{background:linear-gradient(180deg,#111216,#0b0e13);border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;margin:22px 0}
.toc h4{margin:0 0 10px;font-size:16px;color:#fff}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:26px}
.toc li{margin:0 0 7px;font-size:15px;break-inside:avoid}
.toc a{color:#cfd8e3}

/* closer */
.closer{position:relative;overflow:hidden;isolation:isolate;background:linear-gradient(135deg,#151013,#0b0b0c);
  border:1px solid rgba(255,69,0,.35);border-radius:20px;padding:clamp(26px,4.5vw,42px) 20px;
  text-align:center;margin:40px auto;max-width:var(--maxw)}
.closer h2{display:block;margin:0 0 12px;font-size:clamp(21px,3.2vw,29px)}
.closer h2::after{display:none}
.closer p{max-width:760px;margin:0 auto 20px;color:#e2e8ef}
.closer .cta{justify-content:center;flex-wrap:wrap}

/* breadcrumb */
.crumb{max-width:var(--maxw);margin:16px auto 0;padding:0 18px;font-size:13.5px;color:var(--muted)}
.crumb a{color:#cfd8e3}
.crumb span{color:#7e8794}

/* article layout */
.art{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.art__hero{position:relative;border-radius:18px;overflow:hidden;margin:16px 0 22px;border:1px solid var(--line)}
.art__hero img{width:100%;aspect-ratio:16/7;object-fit:cover;opacity:.92}
.art__hero figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 18px 14px;font-size:13px;
  color:#dfe6ee;background:linear-gradient(0deg,rgba(8,8,9,.92),transparent)}
figure{margin:0 0 20px}
figcaption{font-size:13px;color:var(--muted);margin-top:7px;text-align:center}

/* footer */
.ft{background:#08080a;border-top:1px solid var(--line2);margin-top:52px;padding:34px 0 22px}
.ft__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:26px}
.ft h4{font-size:15px;margin:0 0 12px;color:#fff;letter-spacing:.3px}
.ft ul{list-style:none;margin:0;padding:0}
.ft li{margin:0 0 7px}
.ft a{color:#a8b2bf;font-size:14px}
.ft a:hover{color:var(--accent2)}
.ft p{font-size:13.5px;color:#8b95a3;line-height:1.8}
.ft__bottom{border-top:1px solid var(--line2);margin-top:26px;padding-top:16px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#7d8794}
.ft__bottom a{color:#8b95a3}
.age{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:50%;border:2px solid #ff5a3c;color:#ff5a3c;font-weight:800;font-size:12px;flex:0 0 auto}

/* responsive */
@media(max-width:980px){
  .why,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps,.g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ft__grid{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .nav.open{display:flex;position:absolute;left:0;right:0;top:100%;background:#0b0b0c;
    border-bottom:1px solid var(--line);flex-direction:column;padding:10px 18px 16px;gap:2px}
  .burger{display:block;margin-left:auto}
  .cta .btn-ghost{display:none}
}
@media(max-width:640px){
  body{font-size:16px}
  .why,.g4,.steps,.g3,.g2{grid-template-columns:1fr}
  .toc ol{columns:1}
  .cta{flex:1 1 100%}
  .cta .btn{flex:1 1 100%;text-align:center;padding:14px 18px;font-size:17px}
  .hero{margin:14px 12px 0;border-radius:18px}
  .ft__grid{grid-template-columns:1fr}
  .logo img{height:32px}
  table{font-size:14px}
  th,td{padding:10px 11px}
}

/* toc-list & card desc helpers (avoid <p> so paragraph metrics stay clean) */
.toc-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px}
.toc-list li{margin:0;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
  background:rgba(255,255,255,.03);font-size:15px}
.toc-list li::before{content:"› ";color:var(--accent);font-weight:800}
.toc-list a{color:#dbe3ec}
.card__body .cd{font-size:14.5px;color:var(--muted);line-height:1.7}
.step .sd{font-size:14px;color:var(--muted);line-height:1.7}
@media(max-width:640px){.toc-list{grid-template-columns:1fr}}

/* inner-page article hero */
.art h1{margin:14px 0 12px;font-weight:800;font-size:clamp(24px,3.6vw,36px);line-height:1.28;color:#fff;max-width:960px}
.art h1 .a{color:var(--accent)}
.art .lead{margin:0 0 18px;color:var(--muted);font-size:clamp(15px,1.5vw,17px);line-height:1.8;max-width:900px}

/* mobile-only nav links + menu polish */
.nav .m-only{display:none}
@media(max-width:980px){
  .nav.open{padding:8px 12px 14px}
  .nav.open a{display:block;padding:12px 10px;border-bottom:1px solid var(--line2);font-size:16.5px}
  .nav.open a:last-child{border-bottom:0}
  .nav.open a::after{display:none}
  .nav.open a.on{color:var(--accent2)}
  .nav.open .m-only{display:block;color:#ff9b6b}
}