:root{
  --ink:#171511;--cream:#f6f4ef;--paper:#FFF6E9;--accent:#ff4810;--muted:#6b6760;
  --line:rgba(23,21,17,.14);--card:#ffffff;--ok:#1f7a4d;--radius:18px;
  --latin:"Space Grotesk","IBM Plex Sans Thai",system-ui,sans-serif;
  --thai:"IBM Plex Sans Thai","Space Grotesk",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:var(--thai);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.latin{font-family:var(--latin)}
.num{font-family:var(--latin);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}

/* header */
.top{display:flex;align-items:center;justify-content:space-between;padding:18px 0 10px;gap:12px}
.wordmark{font-family:var(--latin);font-weight:700;letter-spacing:-.02em;font-size:20px;text-decoration:none;display:flex;align-items:center;gap:10px}
.wordmark .dot{width:10px;height:10px;background:var(--accent);border-radius:50%}
.wordmark small{font-weight:500;color:var(--muted);font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.lang{font-family:var(--latin);font-size:13px;letter-spacing:.08em;text-decoration:none;border:1px solid var(--line);padding:6px 12px;border-radius:999px}

/* hero */
.hero{padding:22px 0 8px}
.eyebrow{font-family:var(--latin);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 14px;display:flex;align-items:center;gap:12px}
.eyebrow:before{content:"";width:28px;height:3px;background:var(--accent);display:inline-block}
h1{font-size:clamp(34px,8.2vw,74px);line-height:1.04;letter-spacing:-.025em;font-weight:700;margin:0 0 16px}
.sub{font-size:clamp(16px,2.2vw,20px);color:var(--muted);margin:0 0 24px;max-width:38em}

/* form */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card h2{margin:0 0 14px;font-size:20px;letter-spacing:-.01em}
.field{margin-bottom:14px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field label .opt{font-weight:400;color:var(--muted);font-size:13px}
.field input[type=text],.field input[type=email],.field input[type=tel],.field input[type=url]{
  width:100%;font:inherit;font-size:16px;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s}
.field input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(23,21,17,.08)}
.field.err input{border-color:var(--accent)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.45;margin:6px 0 16px}
.check input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--accent);flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--thai);font-weight:700;font-size:17px;padding:15px 22px;border-radius:999px;border:0;cursor:pointer;text-decoration:none;transition:transform .12s,background .15s}
.btn:active{transform:scale(.985)}
.btn-accent{background:var(--accent);color:#fff;width:100%}
.btn-accent:hover{background:#e63f0c}
.btn-ink{background:var(--ink);color:var(--cream)}
.btn-ink:hover{background:#000}
.btn-ghost{background:transparent;border:1px solid var(--ink);color:var(--ink)}
.note{font-size:13px;color:var(--muted);margin:12px 0 0;text-align:center}
.alert{background:var(--paper);border:1px solid var(--accent);border-radius:12px;padding:12px 14px;font-size:14px;margin-bottom:14px}
.hp{position:absolute;left:-9999px;top:-9999px;height:0;width:0;overflow:hidden}

/* sections */
.section{padding:44px 0 8px}
.section h2{font-size:clamp(24px,4vw,36px);letter-spacing:-.02em;margin:0 0 22px;line-height:1.15}
.steps{display:grid;gap:14px}
.step{border-top:1px solid var(--line);padding:18px 0 6px;display:grid;grid-template-columns:52px 1fr;gap:10px}
.step .n{font-family:var(--latin);font-size:13px;letter-spacing:.1em;color:var(--accent);padding-top:5px}
.step h3{margin:0 0 6px;font-size:19px;letter-spacing:-.01em}
.step p{margin:0;color:var(--muted);font-size:15px}
.cards{display:grid;gap:12px}
.cards .card h3{margin:0 0 6px;font-size:18px}
.cards .card p{margin:0;color:var(--muted);font-size:15px}
.proof{font-family:var(--latin);font-size:13px;letter-spacing:.06em;color:var(--muted);text-align:center;padding:30px 0 6px;border-top:1px solid var(--line);margin-top:34px}
.faq details{border-top:1px solid var(--line);padding:14px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-family:var(--latin);font-size:22px;color:var(--muted)}
.faq details[open] summary:after{content:"–"}
.faq p{margin:10px 0 0;color:var(--muted);font-size:15px}
footer{padding:36px 0 110px;font-size:14px;color:var(--muted)}
footer .row{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
footer a{text-decoration:none}
footer .wordmark{font-size:17px;color:var(--ink)}

/* sticky mobile CTA */
.sticky{position:fixed;left:0;right:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(246,244,239,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);transform:translateY(110%);transition:transform .25s;z-index:20}
.sticky.show{transform:none}
.sticky .btn{width:100%}

/* result page */
.rhead{padding:18px 0 4px}
.rhead .cat{color:var(--muted);font-size:15px;margin:2px 0 0}
.rhead h1{font-size:clamp(28px,6vw,52px);margin:0}
.score{display:grid;gap:14px;padding:18px 0 6px}
.score .big{font-family:var(--latin);font-size:clamp(84px,22vw,150px);line-height:.9;letter-spacing:-.05em;font-weight:700;display:flex;align-items:baseline;gap:6px}
.score .big small{font-size:22px;color:var(--muted);letter-spacing:0;font-weight:500}
.score .verdict{font-size:clamp(20px,3.4vw,28px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
.score .progress{font-family:var(--latin);font-size:13px;letter-spacing:.06em;color:var(--muted);display:flex;align-items:center;gap:8px}
.spin{width:12px;height:12px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:sp 1s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}
.meters{display:grid;gap:10px;margin-top:4px}
.meter{display:grid;grid-template-columns:1fr auto;gap:4px 12px;font-size:14px}
.meter .bar{grid-column:1/-1;height:6px;background:rgba(23,21,17,.08);border-radius:999px;overflow:hidden}
.meter .bar i{display:block;height:100%;background:var(--ink);width:0;transition:width .6s ease}
.meter .bar i.acc{background:var(--accent)}
.meter .v{font-family:var(--latin);font-variant-numeric:tabular-nums;font-weight:600}
.engines{display:grid;gap:14px;margin-top:10px}
.engine{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.engine .eh{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.engine .eh h3{margin:0;font-family:var(--latin);font-size:20px;letter-spacing:-.01em}
.pill{font-family:var(--latin);font-size:12px;letter-spacing:.04em;padding:5px 11px;border-radius:999px;border:1px solid var(--line);color:var(--muted);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.pill.done{border-color:var(--ok);color:var(--ok)}
.pill.running{border-color:var(--ink);color:var(--ink)}
.pill.error{border-color:var(--accent);color:var(--accent)}
.pill.waiting{background:var(--paper);border-color:transparent}
.q{border-top:1px solid var(--line);padding:14px 0 4px}
.q .qt{color:var(--muted);font-size:14px;margin:0 0 8px}
.q .found{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin:8px 0 4px}
.q .found .mark{font-family:var(--latin);width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:13px;background:rgba(23,21,17,.08)}
.q .found.yes .mark{background:var(--accent);color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0}
.chip{font-size:13px;padding:5px 10px;border-radius:999px;background:rgba(23,21,17,.06)}
.chip.me{background:var(--accent);color:#fff;font-weight:600}
.chip.none{background:transparent;border:1px dashed var(--line);color:var(--muted)}
.chips-label{font-size:13px;color:var(--muted)}
.q details{margin-top:4px}
.q summary{font-size:13px;color:var(--muted);cursor:pointer;font-family:var(--latin)}
.q .raw{white-space:pre-wrap;font-size:14px;line-height:1.55;background:var(--cream);border-radius:12px;padding:12px;margin-top:8px;color:var(--ink)}
.q .err{font-size:13px;color:var(--accent)}
.skel{height:14px;border-radius:6px;background:linear-gradient(90deg,rgba(23,21,17,.06),rgba(23,21,17,.12),rgba(23,21,17,.06));background-size:200% 100%;animation:sk 1.2s infinite;margin:8px 0}
@keyframes sk{to{background-position:-200% 0}}
.ranked{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ranked li{display:grid;grid-template-columns:30px 1fr auto;gap:10px;align-items:center;font-size:16px}
.ranked .rk{font-family:var(--latin);color:var(--muted);font-size:13px}
.ranked .rb{position:relative;padding:8px 12px;border-radius:10px;background:var(--card);border:1px solid var(--line);overflow:hidden}
.ranked .rb i{position:absolute;left:0;top:0;bottom:0;background:var(--paper);z-index:0}
.ranked .rb span{position:relative;z-index:1}
.ranked .rc{font-family:var(--latin);font-variant-numeric:tabular-nums;color:var(--muted);font-size:14px}
.actions{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:a}
.actions li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 16px 16px 58px;position:relative;font-size:16px}
.actions li:before{counter-increment:a;content:"0" counter(a);position:absolute;left:16px;top:16px;font-family:var(--latin);font-size:13px;letter-spacing:.1em;color:var(--accent)}
.cta{background:var(--ink);color:var(--cream);border-radius:var(--radius);padding:28px 22px;margin-top:36px}
.cta h2{margin:0 0 8px;font-size:clamp(24px,4vw,34px);letter-spacing:-.02em;line-height:1.15}
.cta p{margin:0 0 18px;color:rgba(246,244,239,.7)}
.cta .row{display:grid;gap:10px}
.cta .btn-accent{width:auto}
.cta .btn-ghost{border-color:rgba(246,244,239,.4);color:var(--cream)}
.cta .small{font-size:13px;color:rgba(246,244,239,.6);margin:14px 0 0}
.empty{color:var(--muted);font-size:15px}

@media (min-width:900px){
  .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start;padding-top:30px}
  .hero{padding-top:30px;position:sticky;top:20px}
  .card{padding:28px}
  .steps{grid-template-columns:repeat(3,1fr);gap:22px}
  .step{grid-template-columns:1fr;border-top:1px solid var(--line)}
  .cards{grid-template-columns:repeat(3,1fr)}
  .sticky{display:none}
  footer{padding-bottom:50px}
  .score{grid-template-columns:auto 1fr;gap:36px;align-items:center}
  .engines{grid-template-columns:1fr 1fr}
  .cta .row{grid-template-columns:auto auto;justify-content:start}
  .cta{padding:40px}
}