:root{
  --ground:#F3F5F2;--surface:#FFFFFF;--ink:#16211D;--muted:#4A5752;--line:#D9DFDB;--line-soft:#EEF1EF;
  --accent:#1D6A50;--accent-ink:#134A38;--accent-soft:#E3EFE9;--dark:#16211D;--dark-2:#2A3833;--on-dark-muted:#D5DDD9;
  --sponsor:#FFF8E6;--sponsor-line:#EBDDB5;--sponsor-ink:#5A4310;--sponsor-fill:#F0E4C2;
  --radius:14px;--max:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:'IBM Plex Sans Thai',system-ui,sans-serif;font-size:16px;line-height:1.65}
h1,h2,h3{font-family:'Anuphan','IBM Plex Sans Thai',sans-serif;line-height:1.3;margin:0}
a{color:var(--accent)}a:hover{color:var(--accent-ink)}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:10}

/* header */
.site-head{background:var(--surface);border-bottom:1px solid var(--line);position:relative}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-family:'Anuphan',sans-serif;font-weight:700;font-size:21px}
.brand-mark{width:34px;height:34px;border-radius:8px;background:var(--accent);display:grid;grid-template-columns:1fr 1fr;gap:3px;padding:7px}
.brand-mark span{background:#fff;border-radius:2px}.brand-mark span:nth-child(2),.brand-mark span:nth-child(3){opacity:.6}
.head-right{display:flex;align-items:center;gap:18px}
.lang-switch{display:flex;align-items:center;border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px}
.lang-switch a{display:inline-flex;align-items:center;justify-content:center;min-width:40px;min-height:34px;padding:0 10px;border-radius:999px;color:var(--muted);text-decoration:none;font-size:14px;font-weight:600}
.lang-switch a:hover{color:var(--ink);background:var(--line-soft)}
.lang-switch a[aria-current="true"]{background:var(--accent);color:#fff}
html[lang="lo"] body,html[lang="lo"] h1,html[lang="lo"] h2,html[lang="lo"] h3,html[lang="lo"] .brand,html[lang="lo"] .steps strong,html[lang="lo"] .cta strong,html[lang="lo"] .callout strong:first-child{font-family:'Noto Sans Lao','IBM Plex Sans Thai',system-ui,sans-serif}
.lang-switch a[lang="lo"]{font-family:'Noto Sans Lao',sans-serif}
.nav{display:flex;align-items:center;gap:6px 22px;flex-wrap:wrap}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;padding:8px 0}
.nav a[aria-current="page"]{color:var(--accent);font-weight:600}
.nav-toggle{display:none;min-width:44px;min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font:inherit;cursor:pointer}
@media (max-width:860px){
  .head-right{gap:10px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 16px;z-index:5}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line-soft)}
}

/* buttons, chips */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border-radius:10px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-ink);color:#fff}
.btn-ghost{background:#fff;border-color:#C5CEC9;color:var(--ink)}.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-light{background:#fff;color:var(--ink)}
.chip{display:inline-block;font-size:13px;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--line-soft);color:var(--ink)}
.chip-accent{background:var(--accent-soft);color:var(--accent-ink)}
.tag-sponsor{display:inline-block;font-size:12px;font-weight:600;padding:1px 8px;border-radius:999px;border:1px solid #B8923A;color:var(--sponsor-ink)}

/* hero */
.hero{padding:56px 0 40px}
.hero .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:40px}
.hero-text{flex:1 1 440px;display:flex;flex-direction:column;gap:18px}
.hero h1{font-size:clamp(32px,5vw,48px);line-height:1.2}
.hero p{margin:0;font-size:18px;color:var(--muted);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.hero-card{flex:1 1 400px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.sheet-demo{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line);font-size:14px}
.sheet-demo div{padding:8px 10px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sheet-demo .h{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.sheet-demo .low{background:#FDECEC;color:#8A1F1F;font-weight:600}
.hero-card-foot{display:flex;justify-content:space-between;gap:8px;margin-top:14px;font-size:14px;color:var(--muted)}

/* sections */
.section{padding:48px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px}
.section-head h2{font-size:clamp(26px,3.4vw,32px)}
.section-head p{margin:4px 0 0;color:var(--muted)}
.section-dark{background:var(--dark);color:#fff}
.section-dark .section-head p{color:var(--on-dark-muted)}
.section-dark a{color:#fff}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;color:var(--ink);text-decoration:none}
a.card:hover{border-color:#9FB0A8;color:var(--ink)}
.card-media{aspect-ratio:16/9;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent-ink)}
.card-media svg{width:56px;height:56px}
.card-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;flex-grow:1}
.card-body h3{font-size:19px}
.card-body p{margin:0;color:var(--muted);font-size:15px;flex-grow:1}
.meta{font-size:14px;color:var(--muted)}
.cat{font-size:13px;font-weight:600;color:var(--accent-ink)}
.card-sponsor{background:var(--sponsor);border-color:var(--sponsor-line)}
.card-sponsor .card-media{background:var(--sponsor-fill);color:var(--sponsor-ink)}
.card-sponsor p{color:var(--sponsor-ink)}

/* ad slots: hidden until AdSense is live (add class ad-live on <body>) */
.ad-slot{display:none;position:relative;min-height:100px;border:1px dashed #8A968F;border-radius:12px;background:var(--line-soft);align-items:center;justify-content:center;color:var(--muted);font-size:14px;margin:24px 0}
body.ad-live .ad-slot{display:flex}
.ad-slot::before{content:attr(data-label);position:absolute;top:8px;left:12px;font-size:12px;font-weight:600}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.steps li{border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:6px;background:#fff}
.steps .n{width:34px;height:34px;border-radius:50%;background:var(--dark);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}
.steps strong{font-family:'Anuphan',sans-serif;font-size:18px}
.steps span{color:var(--muted)}

/* prompts */
.prompt-text{background:var(--ground);border-radius:10px;padding:12px 14px;font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:13px;line-height:1.6;color:var(--ink);word-break:break-word}
.copy-btn{min-height:44px;border-radius:10px;border:none;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.copy-btn.done{background:var(--accent-soft);color:var(--accent-ink)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.filters button{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid #C5CEC9;background:#fff;color:var(--ink);font:inherit;font-weight:500;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--dark);border-color:var(--dark);color:#fff}
.section-dark .prompt-mini{display:flex;flex-direction:column;gap:10px;text-decoration:none;background:var(--dark-2);border-radius:var(--radius);padding:18px}
.section-dark .prompt-mini strong{font-size:17px}
.section-dark .prompt-mini span{color:var(--on-dark-muted);font-size:14px}

/* article */
.page-head{padding:40px 0 8px}
.page-head h1{font-size:clamp(30px,4.5vw,40px)}
.page-head p{color:var(--muted);max-width:680px;margin:8px 0 0}
.article-layout{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-start;padding:32px 0 64px}
.article{flex:999 1 600px;min-width:0;max-width:760px;font-size:17px;line-height:1.85}
.article h1{font-size:clamp(30px,4.5vw,40px);margin:8px 0 12px}
.article h2{font-size:25px;margin:36px 0 10px}
.article h3{font-size:20px;margin:24px 0 8px}
.article p{margin:0 0 16px}
.article ul,.article ol{padding-left:24px;margin:0 0 16px}
.article li{margin-bottom:6px}
.article table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:15px}
.article th,.article td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.article th{background:var(--accent-soft);color:var(--accent-ink)}
.article code{font-family:'IBM Plex Mono',ui-monospace,monospace;background:var(--line-soft);padding:1px 6px;border-radius:4px;font-size:.9em}
.table-scroll{overflow-x:auto}
.byline{font-size:15px;color:var(--muted);margin-bottom:20px}
.lead{font-size:19px}
.callout{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin:24px 0}
.callout strong:first-child{display:block;font-family:'Anuphan',sans-serif;font-size:20px;margin-bottom:6px}
.cta{background:var(--dark);color:#fff;border-radius:var(--radius);padding:26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin:28px 0;line-height:1.6}
.cta strong{font-family:'Anuphan',sans-serif;font-size:22px;display:block}
.cta span{color:var(--on-dark-muted)}
.cta .btn{color:var(--ink)}
.aside{flex:1 1 280px;min-width:0;display:flex;flex-direction:column;gap:20px}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.box h2{font-size:18px;margin-bottom:10px}
.box ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.prose{max-width:760px;padding:24px 0 64px;font-size:17px;line-height:1.85}
.prose h2{font-size:24px;margin:32px 0 10px}
.prose p,.prose ul{margin:0 0 16px}

/* sponsor strip */
.sponsor-strip{background:var(--sponsor);border-bottom:1px solid var(--sponsor-line);color:var(--sponsor-ink);font-size:14px}
.sponsor-strip .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;min-height:44px}
.sponsor-strip a{color:var(--sponsor-ink);font-weight:600}

/* footer */
.site-foot{border-top:1px solid var(--line);background:#fff;margin-top:24px}
.site-foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding-top:28px;padding-bottom:36px;color:var(--muted);font-size:14px}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.site-foot a{color:var(--muted)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--dark);color:#fff;padding:10px 18px;border-radius:10px;font-size:15px;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.show{opacity:1}