:root{
  --brand:#0f766e; --brand-2:#0d9488; --brand-dark:#134e4a; --brand-soft:#ccfbf1;
  --ink:#0f172a; --ink-2:#1e293b; --line:#cbd5e1; --line-soft:#e2e8f0; --bg:#f1f5f9; --card:#fff;
  --ok:#15803d; --ok-soft:#dcfce7; --bad:#b91c1c; --bad-soft:#fee2e2; --warn:#a16207; --warn-soft:#fef9c3;
  --info:#1d4ed8; --info-soft:#dbeafe; --radius:14px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:"IBM Plex Sans Thai","Noto Sans Thai","Sarabun",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);background:var(--bg);font-size:16px;line-height:1.6}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
code,.mono{font-family:var(--mono);font-size:.92em}
h1,h2,h3{line-height:1.25;margin:0 0 .5em}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* top bar */
.top{background:#fff;border-bottom:1px solid var(--line-soft);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo svg{width:34px;height:34px}
.logo small{font-weight:600;color:var(--brand);font-size:13px;letter-spacing:.02em}
.nav{display:flex;gap:6px;align-items:center;margin-left:auto;flex-wrap:wrap}
.nav a,.nav button.link{color:var(--ink-2);padding:8px 12px;border-radius:10px;font-weight:500;font-size:15px}
.nav a:hover,.nav button.link:hover{background:var(--bg);text-decoration:none}
.nav a.on{background:var(--brand-soft);color:var(--brand-dark)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-left:6px}
.lang a{padding:4px 11px;font-size:13px;font-weight:600;color:var(--ink-2);border-radius:0}
.lang a.on{background:var(--brand);color:#fff}
button.link{background:none;border:0;font:inherit;cursor:pointer}

/* buttons + forms */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--brand);
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:10px;font:inherit;font-weight:600;
  cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.btn.ghost{background:#fff;color:var(--brand-dark);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--brand);background:var(--brand-soft)}
.btn.danger{background:var(--bad);border-color:var(--bad)}
.btn.small{padding:6px 12px;font-size:14px;border-radius:8px}
.btn.big{padding:14px 26px;font-size:17px}
.btn:disabled{opacity:.55;cursor:not-allowed}
label{font-weight:600;font-size:14px;display:block;margin:0 0 6px;color:var(--ink)}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;color:var(--ink);background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-2);outline-offset:0;border-color:var(--brand-2)}
::placeholder{color:#475569;opacity:1}
.field{margin-bottom:14px}
.hint{font-size:13.5px;color:var(--ink-2);margin-top:5px}
.row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.row>*{flex:1;min-width:140px}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:500}
.check input{margin-top:5px}

/* cards */
.card{background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);padding:22px;margin-bottom:18px}
.card h2{font-size:19px;display:flex;align-items:center;gap:10px}
.card h2 .sub{font-weight:500;font-size:14px;color:var(--ink-2)}
.grid{display:grid;gap:18px}
.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))}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}.top .wrap{height:auto;padding:10px 20px;flex-wrap:wrap}}

.flash{background:var(--info-soft);border:1px solid #93c5fd;color:#1e3a8a;padding:12px 16px;border-radius:12px;margin:18px 0;font-weight:500}
.error{background:var(--bad-soft);border:1px solid #fca5a5;color:#7f1d1d;padding:12px 16px;border-radius:12px;margin-bottom:14px;font-weight:500}
.warnbox{background:var(--warn-soft);border:1px solid #fde047;color:#713f12;padding:12px 16px;border-radius:12px;margin-bottom:14px}

.pill{display:inline-flex;align-items:center;gap:7px;padding:3px 11px;border-radius:999px;font-size:13.5px;font-weight:600;white-space:nowrap}
.pill:before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.pill.online{background:var(--ok-soft);color:var(--ok)}
.pill.offline{background:var(--bad-soft);color:var(--bad)}
.pill.pending,.pill.checking{background:var(--warn-soft);color:var(--warn)}
.pill.expired{background:#e2e8f0;color:#0f172a}

table{width:100%;border-collapse:collapse;font-size:15px}
th{text-align:left;font-size:13px;letter-spacing:.02em;color:var(--ink-2);font-weight:700;padding:9px 10px;border-bottom:2px solid var(--line-soft);white-space:nowrap}
td{padding:10px;border-bottom:1px solid var(--line-soft);vertical-align:middle}
tr:last-child td{border-bottom:0}
.tablewrap{overflow-x:auto}

.copy{display:flex;align-items:stretch;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.copy code{flex:1;padding:9px 12px;white-space:nowrap;overflow-x:auto;scrollbar-width:none;font-size:14px;color:var(--ink)}
.copy code::-webkit-scrollbar{display:none}
.copy button{border:0;border-left:1px solid var(--line);background:var(--bg);font:inherit;font-size:13.5px;font-weight:600;padding:0 14px;cursor:pointer;color:var(--brand-dark)}
.copy button:hover{background:var(--brand-soft)}
.copy.block code{white-space:pre-wrap;word-break:break-all}
.addr{font-family:var(--mono);font-weight:600;font-size:15px}

.stat{background:var(--bg);border-radius:12px;padding:12px 14px}
.stat .k{font-size:13px;font-weight:600;color:var(--ink-2)}
.stat .v{font-size:18px;font-weight:700;word-break:break-word}

/* app layout */
.page{padding:26px 0 60px}
.page-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.page-head h1{font-size:26px;margin:0}
.page-head .right{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.rcard{display:block;color:inherit}
.rcard:hover{text-decoration:none;border-color:var(--brand-2);box-shadow:0 4px 18px rgba(15,118,110,.12)}
.rcard .head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.rcard .head h3{margin:0;font-size:18px}
.rcard .meta{font-size:14px;color:var(--ink-2)}
.rcard .conn{margin-top:12px;display:grid;gap:6px}
.rcard .conn div{display:flex;justify-content:space-between;gap:10px;background:var(--bg);padding:6px 10px;border-radius:8px;font-size:14px}
.empty{text-align:center;padding:50px 20px}
.empty svg{width:80px;height:80px;margin-bottom:10px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px;border-bottom:1px solid var(--line-soft);padding-bottom:10px}
.tabs a{padding:7px 14px;border-radius:9px;font-weight:600;color:var(--ink-2);font-size:15px}
.tabs a:hover{background:#fff;text-decoration:none}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding-left:42px;margin-bottom:14px}
.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}
details summary{cursor:pointer;font-weight:600;color:var(--brand-dark)}
.chartbox{position:relative;height:280px}
.chartbox.small{height:180px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{border:0;background:#fff;padding:6px 12px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;color:var(--ink-2)}
.seg button.on{background:var(--brand);color:#fff}
.legend{display:flex;gap:16px;font-size:14px;font-weight:600;align-items:center;flex-wrap:wrap}
.legend i{display:inline-block;width:14px;height:4px;border-radius:2px;margin-right:6px;vertical-align:middle}
.tag{display:inline-block;background:var(--brand-soft);color:var(--brand-dark);border-radius:6px;padding:1px 8px;font-size:13px;font-weight:600;margin:1px 3px 1px 0}
.tag.any{background:var(--warn-soft);color:#713f12}

/* landing */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#99f6e4 0,transparent 60%),linear-gradient(180deg,#f0fdfa,#f1f5f9);padding:70px 0 60px;border-bottom:1px solid var(--line-soft)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.hero h1{font-size:44px;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p.lead{font-size:19px;color:var(--ink-2);max-width:620px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.badges span{background:#fff;border:1px solid var(--line-soft);border-radius:999px;padding:5px 13px;font-size:14px;font-weight:600}
.mock{background:#0f172a;color:#e2e8f0;border-radius:18px;padding:22px;box-shadow:0 30px 60px rgba(15,23,42,.25)}
.mock .bar{display:flex;gap:6px;margin-bottom:14px}.mock .bar i{width:11px;height:11px;border-radius:50%;background:#475569}
.mock .line{font-family:var(--mono);font-size:13.5px;line-height:1.7;color:#e2e8f0;word-break:break-all}
.mock .line b{color:#5eead4;font-weight:600}
.mock .ok{color:#86efac}
.mock .box{margin-top:16px;background:#1e293b;border-radius:12px;padding:14px}
.mock .box div{display:flex;justify-content:space-between;font-size:14px;padding:4px 0;color:#f1f5f9}
.mock .box span:last-child{font-family:var(--mono);color:#5eead4}
.section{padding:64px 0}
.section h2.title{font-size:32px;text-align:center;margin-bottom:10px}
.section p.sub{text-align:center;color:var(--ink-2);font-size:17px;max-width:720px;margin:0 auto 34px}
.feat{background:#fff;border:1px solid var(--line-soft);border-radius:16px;padding:22px}
.feat .ic{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.feat .ic svg{width:24px;height:24px;stroke:var(--brand-dark)}
.feat h3{font-size:18px;margin-bottom:6px}
.feat p{margin:0;color:var(--ink-2);font-size:15.5px}
.how{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.howstep{text-align:center;padding:10px}
.howstep .n{width:52px;height:52px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;font-size:22px;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.price{background:#fff;border:1px solid var(--line-soft);border-radius:18px;padding:28px;text-align:center}
.price.hl{border:2px solid var(--brand);box-shadow:0 14px 40px rgba(15,118,110,.14)}
.price .amt{font-size:38px;font-weight:800;color:var(--brand-dark);margin:8px 0}
.price ul{list-style:none;padding:0;margin:16px 0 22px;text-align:left}
.price li{padding:5px 0 5px 26px;position:relative}
.price li:before{content:"✓";position:absolute;left:4px;color:var(--brand);font-weight:800}
.faq details{background:#fff;border:1px solid var(--line-soft);border-radius:12px;padding:16px 18px;margin-bottom:10px}
.faq details p{margin:10px 0 0;color:var(--ink-2)}
.foot{background:#0f172a;color:#e2e8f0;padding:34px 0;font-size:14.5px}
.foot a{color:#5eead4}
.foot .wrap{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between}
.auth{max-width:440px;margin:50px auto}
.muted{color:var(--ink-2)}
.right{text-align:right}
.nowrap{white-space:nowrap}
.mt0{margin-top:0}.mb0{margin-bottom:0}
@media(max-width:640px){.hero{padding:40px 0}.hero h1{font-size:32px}.hero p.lead{font-size:17px}.section{padding:44px 0}.section h2.title{font-size:26px}.page-head h1{font-size:22px}}