/* Prompt font — SIL Open Font License 1.1 (free for commercial use), self-hosted. License: assets/fonts/OFL-LICENSE.txt */
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:400;src:url(fonts/prompt-thai-400-normal.woff2) format('woff2');unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:500;src:url(fonts/prompt-thai-500-normal.woff2) format('woff2');unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:700;src:url(fonts/prompt-thai-700-normal.woff2) format('woff2');unicode-range:U+02D7,U+0303,U+0331,U+0E01-0E5B,U+200C-200D,U+25CC}
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:400;src:url(fonts/prompt-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:500;src:url(fonts/prompt-latin-500-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Prompt';font-style:normal;font-display:swap;font-weight:700;src:url(fonts/prompt-latin-700-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{
  --bg:#fff;--surface:#fff;--ink:#0f172a;--muted:#475569;--line:#e2e8f0;
  --brand:#2563eb;--brand-dark:#1e40af;--brand-soft:#eff6ff;--navy:#172554;--navy2:#1e3a8a;--ok:#2b7a4b;
  --radius:16px;--shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(30,64,175,.08);
  --max:1120px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.75;font-size:16.5px;
  font-family:"Prompt",system-ui,-apple-system,"Segoe UI","Noto Sans Thai","Sarabun",Tahoma,sans-serif;padding-bottom:72px}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-dark)}
a:hover{color:var(--brand)}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
h1{font-size:clamp(1.7rem,5vw,2.8rem);color:var(--navy);font-weight:700}
h2{font-size:clamp(1.35rem,3.4vw,1.9rem);color:var(--navy);font-weight:700}
h3{font-size:1.1rem}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}

/* header */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px}
.brand{font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;display:flex;flex-direction:column;line-height:1.15}
.brand small{font-weight:500;font-size:.72rem;color:var(--muted)}
.nav{display:none;gap:4px;align-items:center}
.call-top{display:none!important}
.imglink{display:block;text-decoration:none}
.nav a{padding:8px 12px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{background:var(--brand-soft);color:var(--brand-dark)}
.menu-btn{background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font:inherit;font-weight:700;cursor:pointer}
.mnav{display:none;border-top:1px solid var(--line);padding:8px 0}
.mnav.open{display:block}
.mnav a{display:block;padding:12px 4px;color:var(--ink);text-decoration:none;font-weight:600;border-bottom:1px solid var(--line)}
@media(min-width:860px){.call-top{display:inline-flex!important}.nav{display:flex}.menu-btn,.mnav{display:none!important}body{padding-bottom:0}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:999px;
  background:var(--brand);color:#fff;font-weight:700;text-decoration:none;border:2px solid var(--brand);font:inherit;font-weight:700;cursor:pointer;min-height:48px}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.btn.ghost{background:transparent;color:var(--brand-dark)}
.btn.ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}

/* hero */
.hero{padding:40px 0 36px;background:var(--brand-soft)}
.hero-grid{display:grid;gap:24px;align-items:center}
.hero p.lead{font-size:1.1rem;color:var(--muted);max-width:56ch}
.facts{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:16px 0}
.facts li{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.92rem;font-weight:600}
@media(min-width:860px){.hero-grid{grid-template-columns:1.1fr .9fr}.hero{padding:56px 0 44px}}

/* sections */
section{padding:36px 0}
.alt{background:#f8fafc;border-block:1px solid var(--line)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.g3{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.card .body{padding:16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--brand-dark)}
.tag{display:inline-block;font-size:.78rem;font-weight:700;color:var(--brand-dark);background:var(--brand-soft);border-radius:6px;padding:2px 8px;align-self:flex-start}
.price{font-weight:700;color:var(--ink)}
.muted{color:var(--muted);font-size:.95rem}
.card .btn-row{margin-top:auto;padding-top:8px}

/* image placeholder */
.ph{aspect-ratio:4/3;background:repeating-linear-gradient(45deg,#eaf0fa,#eaf0fa 12px,#e2eaf7 12px,#e2eaf7 24px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:#5b6b8a;font-size:.85rem;text-align:center;padding:8px}
.ph svg{width:44px;height:44px;opacity:.7}
.photo{aspect-ratio:4/3;object-fit:contain;background:#eaf0fa;width:100%}

/* breadcrumb */
.crumb{font-size:.9rem;color:var(--muted);padding:14px 0 0}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px;padding:0;margin:0}
.crumb li+li::before{content:"›";margin-right:4px}
.crumb a{color:var(--muted)}

/* product */
.pd{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;padding:16px 0 8px}
.pd>*{min-width:0}
@media(min-width:860px){.pd{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:8px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.variant{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px;background:var(--surface)}
.variant h3{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px;margin:0 0 6px}
.variant ul{margin:0;color:var(--muted)}
.note{background:var(--brand-soft);border-left:4px solid var(--brand);padding:12px 14px;border-radius:8px;font-size:.95rem}
.note ul{margin:0}
.todo{border:2px dashed #c58f00;background:#fff8dc;border-radius:10px;padding:10px 14px;font-size:.9rem;color:#6b4f00;margin:12px 0}
details{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin-bottom:10px;padding:0 16px}
summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;font-weight:700;color:var(--brand)}
details[open] summary::after{content:"–"}
details p{color:var(--muted)}

/* toolbar */
.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
.toolbar input,.toolbar select,.form input,.form select,.form textarea{font:inherit;padding:12px 14px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;min-height:48px;width:100%}
.toolbar input{flex:1 1 220px}
.toolbar select{flex:0 1 240px;width:auto}
.form{display:grid;gap:12px;max-width:560px}
.form label{font-weight:700;display:grid;gap:4px}

/* footer + sticky */
.site-footer{background:#172554;color:#bfd0f5;padding:32px 0 24px;margin-top:24px;font-size:.95rem}
.site-footer a{color:#fff}
.fgrid{display:grid;gap:20px}
@media(min-width:760px){.fgrid{grid-template-columns:2fr 1fr 1fr}}
.site-footer h2{font-size:1rem;color:#fff}
.site-footer .muted{color:#93a8d8!important}
.site-footer ul{list-style:none;padding:0}
.sticky{position:fixed;left:0;right:0;bottom:0;display:flex;gap:8px;padding:8px 12px;background:#fff;border-top:1px solid var(--line);z-index:30}
.sticky .btn{flex:1;padding:10px}
@media(min-width:860px){.sticky{display:none}}
.table{width:100%;border-collapse:collapse;font-size:.95rem}
.table th,.table td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.table th{background:var(--brand-soft)}
article.guide h2{margin-top:1.6em}
article.guide{max-width:760px}

/* blue theme additions */
.facts li::before{content:"✓";color:var(--brand);font-weight:700;margin-right:6px}
.hero .photo,.hero .ph{border:4px solid #fff;border-radius:18px;box-shadow:0 14px 40px rgba(30,64,175,.25)}
.card{transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 12px 32px rgba(30,64,175,.18);transform:translateY(-2px)}
.card .photo,.card .ph{border-bottom:1px solid var(--line)}
.panel h3{color:var(--navy)}
.cta-band{background:var(--navy2);color:#fff;text-align:center;padding:56px 0;position:relative;overflow:hidden;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:20px 20px}
.cta-band h2{color:#fff}.cta-band p{color:#dbeafe;max-width:42rem;margin-inline:auto}
.cta-band .btn{background:#fff;color:var(--navy2);border-color:#fff}
.cta-band .btn:hover{background:var(--brand-soft)}
.cta-band .btn.ghost{background:transparent;color:#fff;border-color:#bfdbfe}
.cta-band .btn.ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.nav a:hover,.nav a[aria-current="page"]{background:var(--brand-soft);color:var(--brand-dark)}

blockquote{margin:1.2em 0;padding:14px 16px;background:var(--brand-soft);border-left:4px solid var(--brand);border-radius:0 10px 10px 0;color:var(--navy);font-size:.97rem}
.table{display:block;overflow-x:auto}
sup a{text-decoration:none;font-size:.75em;margin-left:1px}
@media(max-width:700px){.table th,.table td{min-width:130px}.table{font-size:.9rem}}

/* ===== home v2: big hero ===== */
.hero-xl{position:relative;overflow:hidden;color:#fff;padding:44px 0 56px;
  background:radial-gradient(900px 420px at 85% 10%,rgba(96,165,250,.35),transparent 60%),
  linear-gradient(135deg,var(--navy) 0%,var(--navy2) 55%,#2563eb 120%)}
.hero-xl::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:22px 22px}
.hero-xl-grid{position:relative;z-index:1;display:grid;gap:28px;align-items:center}
.hero-xl h1{color:#fff;font-size:clamp(2rem,7vw,3.6rem);line-height:1.2;margin:10px 0 14px}
.hero-xl h1 .hl{color:#93c5fd}.nb{white-space:nowrap}
.hero-xl .lead{font-size:clamp(1.02rem,2.6vw,1.2rem);color:#dbeafe;max-width:34em}
.eyebrow{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff;
  border-radius:999px;padding:4px 14px;font-size:.85rem;font-weight:600}
.facts.on-dark li{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff}
.facts.on-dark li::before{color:#93c5fd}
.btn-lg{min-height:56px;padding:14px 28px;font-size:1.08rem}
.hero-xl .btn{background:#fff;color:var(--navy2);border-color:#fff}
.hero-xl .btn:hover{background:var(--brand-soft)}
.hero-xl .btn.ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.hero-xl .btn.ghost-light:hover{background:rgba(255,255,255,.14);color:#fff}
.hero-note{font-size:.95rem;color:#bfdbfe;margin:6px 0 0}
.collage{display:grid;grid-template-columns:1.25fr 1fr;grid-template-rows:1fr 1fr;gap:10px;aspect-ratio:1/1;max-width:560px;margin:0 auto;width:100%}
.collage img,.collage .ph{width:100%;height:100%;object-fit:cover;border-radius:16px;border:3px solid #fff;
  box-shadow:0 16px 40px rgba(2,6,23,.35);background:#eaf0fa}
.collage .c1{grid-row:1/3}
.collage .ph{aspect-ratio:auto}
@media(min-width:860px){.hero-xl{padding:72px 0 84px}.hero-xl-grid{grid-template-columns:1.05fr .95fr;gap:48px}}
.facts.on-dark{margin:18px 0}

/* problem + solution */
.pas{background:#f8fafc;border-bottom:1px solid var(--line)}
.pain{list-style:none;padding:0;margin:18px 0;display:grid;gap:12px}
.pain li{background:#fff;border:1px solid var(--line);border-left:5px solid #f59e0b;border-radius:12px;padding:14px 16px}
.pain li strong{display:block;color:var(--navy);margin-bottom:4px;font-size:1.05rem}
@media(min-width:860px){.pain{grid-template-columns:1fr 1fr}}
.solve{background:var(--navy);color:#fff;border-radius:16px;padding:20px 22px}
.solve p{color:#e0ecff}.solve strong{color:#fff}
.solve .btn{background:#fff;color:var(--navy2);border-color:#fff}
.solve .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}

/* misc */
ul.plain{list-style:none;padding:0;margin:6px 0 0}
ul.plain li{padding:6px 0;border-top:1px solid var(--line)}
.btn.sm{min-height:36px;padding:4px 14px;font-size:.9rem}
.steps{list-style:none;counter-reset:s;padding:0;margin:14px 0;display:grid;gap:12px}
.steps li{counter-increment:s;display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.steps li::before{content:counter(s);flex:0 0 38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:grid;place-items:center}
.steps strong{display:block;color:var(--navy)}.steps span{color:var(--muted);font-size:.95rem}
@media(min-width:860px){.steps{grid-template-columns:repeat(3,1fr)}}
.biz h2{margin-top:0}
@media(max-width:380px){.nb{white-space:normal}}
@media(min-width:701px){.table{display:table}}

.lead{font-size:1.08rem;color:var(--muted)}
.art-fig{margin:12px 0 20px}.art-fig img{width:100%;height:auto;border-radius:12px;display:block}.art-fig figcaption{font-size:.82rem;margin-top:6px}
article.guide h3{margin-top:1.4em}

.dgal{columns:2;column-gap:10px;margin:12px 0}.dgal img{width:100%;height:auto;border-radius:10px;margin:0 0 10px;display:block;break-inside:avoid}@media(min-width:760px){.dgal{columns:3}}
.thumbs{grid-template-columns:repeat(3,1fr)}