/* ============================================================
   TESA + Infineon · Solutions Hub
   "Tactile Atmosphere" — glassmorphism + editorial · ภาษาไทยล้วน · Lucide เท่านั้น (ห้าม emoji)
   ============================================================ */

:root{
  --bg:#070d1a; --bg-2:#0a1322;
  /* glass surfaces (dark + translucent so white text stays ≥4.5:1 over the ambient) */
  --glass:rgba(17,27,51,0.55); --glass-2:rgba(22,36,66,0.54); --glass-solid:rgba(15,24,46,0.80);
  --line:rgba(255,255,255,0.10); --line-2:rgba(255,255,255,0.18);
  --text:#e9eefb; --muted:#a3b5d6; --muted-2:#7689ab;
  --blue:#83b2ff; --blue-deep:#3f7ad6; --teal:#7af0c0; --amber:#ffcf6e; --rose:#ff93a3;
  --radius:18px; --radius-sm:12px; --maxw:1200px;
  --shadow:0 24px 60px -18px rgba(0,0,0,.65);
  --blur:blur(18px) saturate(140%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Noto Sans Thai","Inter",system-ui,-apple-system,sans-serif;line-height:1.55;
  font-size:15px;-webkit-font-smoothing:antialiased;overflow-x:hidden}

/* ---- ambient "atmosphere": warm → teal → blue glow bleeding through glass ---- */
body::before{content:"";position:fixed;inset:-15%;z-index:-2;pointer-events:none;
  background:
    radial-gradient(62% 92% at 0% 28%, rgba(255,189,72,0.42), transparent 60%),
    radial-gradient(58% 88% at 104% 54%, rgba(96,226,174,0.38), transparent 62%),
    radial-gradient(56% 62% at 44% 114%, rgba(63,122,214,0.32), transparent 64%),
    radial-gradient(42% 46% at 82% 4%, rgba(255,207,110,0.20), transparent 70%);
  filter:blur(46px)}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(120% 72% at 50% -28%, transparent 60%, rgba(6,11,22,0.42) 100%),
    linear-gradient(180deg, rgba(6,11,22,0.20), transparent 28%)}

a{color:var(--blue);text-decoration:none;transition:color .15s}
a:hover{color:#a9caff}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 .8em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--muted)} .small{font-size:13px}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}

/* icons */
[data-lucide]{width:18px;height:18px;vertical-align:-3px;stroke-width:1.9}
.ic-lg [data-lucide]{width:26px;height:26px} .ic-xl [data-lucide]{width:34px;height:34px}

/* chips */
.chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;background:rgba(255,255,255,0.05);
  border:1px solid var(--line);border-radius:999px;padding:3px 11px;color:#c4d6f5;white-space:nowrap;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.chip.amber{background:rgba(255,207,110,.13);border-color:rgba(255,207,110,.45);color:var(--amber)}
.chip.teal{background:rgba(122,240,192,.11);border-color:rgba(122,240,192,.4);color:var(--teal)}
.chip.blue{background:rgba(131,178,255,.13);border-color:rgba(131,178,255,.42);color:var(--blue)}
.chip-row{display:flex;flex-wrap:wrap;gap:7px}

/* ---- glass card ---- */
.card{position:relative;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,0.08),rgba(255,255,255,0) 38%);opacity:.9}
.card.hov{transition:transform .18s cubic-bezier(.2,.8,.2,1),border-color .18s,box-shadow .18s;cursor:pointer;display:block;color:inherit}
.card.hov:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:0 30px 70px -20px rgba(0,0,0,.75)}

.grid{display:grid;gap:16px}
.cols-6{grid-template-columns:repeat(6,1fr)} .cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)} .cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1000px){.cols-6{grid-template-columns:repeat(4,1fr)}.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.cols-6{grid-template-columns:repeat(3,1fr)}.cols-3{grid-template-columns:repeat(2,1fr)}.cols-2{grid-template-columns:1fr}}
@media(max-width:520px){.cols-6{grid-template-columns:repeat(2,1fr)}.cols-3{grid-template-columns:1fr}.cols-4{grid-template-columns:1fr}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.06);color:var(--text);
  border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:10px 17px;font:inherit;font-weight:600;
  cursor:pointer;transition:.16s;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.btn:hover{border-color:var(--blue);background:rgba(131,178,255,0.12);transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg,#4a89e8,#3f6fd6);border-color:transparent;color:#fff;
  box-shadow:0 10px 26px -8px rgba(74,137,232,.6)}
.btn.primary:hover{background:linear-gradient(135deg,#5a97f2,#4a7ee0)}
.btn:disabled{opacity:.42;cursor:not-allowed;transform:none}
.btn.lg{padding:15px 24px;font-size:16px;border-radius:14px}

/* ---- gate ---- */
#gate{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;
  background:radial-gradient(900px 500px at 50% -10%,rgba(63,122,214,.25),transparent 60%)}
#gate.show{display:flex}
.gate-box{width:min(390px,92vw);text-align:center}
.gate-box .badge{display:inline-flex;gap:7px;align-items:center;justify-content:center;color:var(--blue);
  width:60px;height:60px;border-radius:16px;background:rgba(131,178,255,.12);border:1px solid var(--line);margin-bottom:8px}
.gate-box h2{margin:.3em 0;font-size:22px}
.gate-box input{width:100%;margin:14px 0 12px;padding:13px 15px;border-radius:12px;
  border:1px solid var(--line-2);background:rgba(0,0,0,.25);color:var(--text);font:inherit}
.gate-box input:focus{outline:none;border-color:var(--blue)}
.gate-box .btn{width:100%;justify-content:center}
.gate-box .err{color:var(--rose);min-height:1.2em;margin:.5em 0 0;font-size:13px}

/* ---- top nav (floating glass) ---- */
#topnav{position:sticky;top:0;z-index:40}
#topnav .nav{display:flex;align-items:center;gap:16px;height:62px;margin:10px auto 0;
  max-width:var(--maxw);padding:0 18px;border-radius:16px;
  background:rgba(10,17,32,0.55);-webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;color:var(--text);font-size:15px;white-space:nowrap}
.brand [data-lucide]{color:var(--blue)}
.spacer{flex:1}
.logo-slot{display:flex;align-items:center;justify-content:center;min-width:84px;height:32px;padding:0 12px;
  border:1px dashed var(--line-2);border-radius:9px;font-size:11px;color:var(--muted);letter-spacing:.04em}
#topnav input#q{flex:0 1 270px;padding:9px 14px;border-radius:999px;border:1px solid var(--line-2);
  background:rgba(0,0,0,.22);color:var(--text);font:inherit;font-size:14px}
#topnav input#q:focus{outline:none;border-color:var(--blue)}
@media(max-width:760px){#topnav .nav{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:10px;gap:10px}
  #topnav input#q{flex:1 1 100%}.spacer{display:none}}
/* nav CTA — make the flagship "ติดตั้งจริง" link pop vs the plain chips */
.nav-cta{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;font-size:13px;font-weight:700;color:#fff;
  padding:8px 14px;border-radius:999px;border:1px solid transparent;background:linear-gradient(135deg,#4a89e8,#3f6fd6);
  box-shadow:0 8px 22px -8px rgba(74,137,232,.7);transition:transform .16s,filter .16s,box-shadow .16s;
  animation:cta-pulse 2.6s ease-in-out infinite}
.nav-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 12px 30px -8px rgba(74,137,232,.92)}
.nav-cta [data-lucide]{color:#fff;width:16px;height:16px}
.nav-cta [data-lucide="arrow-right"]{width:15px;transition:transform .16s}
.nav-cta:hover [data-lucide="arrow-right"]{transform:translateX(3px)}
@keyframes cta-pulse{0%,100%{box-shadow:0 8px 22px -8px rgba(74,137,232,.62)}
  50%{box-shadow:0 8px 26px -6px rgba(74,137,232,.95),0 0 0 3px rgba(131,178,255,.20)}}

/* ---- hero (editorial + layered) ---- */
.hero{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:26px;margin:24px 0;padding:48px 42px;
  background:
    radial-gradient(72% 130% at -6% 0%, rgba(255,189,72,0.22), transparent 58%),
    radial-gradient(72% 130% at 106% 100%, rgba(96,226,174,0.20), transparent 58%),
    rgba(14,24,48,0.40);
  -webkit-backdrop-filter:blur(20px) saturate(150%);backdrop-filter:blur(20px) saturate(150%);box-shadow:var(--shadow)}
.hero-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:30px;align-items:center}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr;gap:22px}}
.eyebrow{display:inline-block;font-family:"Inter",sans-serif;font-size:12px;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.hero h1{font-size:clamp(36px,5.4vw,62px);line-height:1.04;font-weight:700;letter-spacing:-0.03em;margin-bottom:16px}
.hero .lead{font-size:17px;color:#cfdcf5;max-width:620px;font-weight:300}
.hero .lead b{font-weight:600;color:#e9eefb}
.hero .strike{color:var(--rose);text-decoration:line-through;text-decoration-color:rgba(255,147,163,.6);text-decoration-thickness:2px}
.hero .accent{background:linear-gradient(100deg,var(--teal),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-cta{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.hero-side{display:flex;flex-direction:column;gap:12px}
.stat-card{position:relative;border:1px solid var(--line);border-radius:16px;padding:16px 18px;
  background:rgba(255,255,255,0.04);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  display:flex;align-items:center;gap:14px}
.stat-card .ic{display:flex;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  background:rgba(131,178,255,.12);color:var(--blue);flex:none}
.stat-card .v{font-size:24px;font-weight:700;font-family:"Inter",sans-serif;letter-spacing:-.02em;line-height:1}
.stat-card .l{font-size:12.5px;color:var(--muted);margin-top:3px}
@media(max-width:520px){.hero{padding:30px 22px}}

/* section heads */
.sec-head{display:flex;align-items:center;gap:10px;margin:38px 0 16px;scroll-margin-top:90px}
.sec-head h2{margin:0;font-size:22px;letter-spacing:-.02em}
.sec-head [data-lucide]{color:var(--blue)}
.sec-head .hint{color:var(--muted);font-size:13px;font-weight:400;margin-left:4px}

/* sector card */
.sector-card{text-align:center;padding:20px 12px}
.sector-card .ic{display:inline-flex;width:56px;height:56px;border-radius:16px;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(131,178,255,.18),rgba(122,240,192,.1));border:1px solid var(--line);margin-bottom:11px;color:var(--blue)}
.sector-card .ic [data-lucide]{width:26px;height:26px}
.sector-card .name{font-weight:600} .sector-card .cnt{color:var(--muted);font-size:13px;margin-top:3px}

/* product card */
.prod-card{text-align:center;padding:15px}
.prod-thumb{width:100%;aspect-ratio:4/3;object-fit:contain;background:rgba(255,255,255,0.94);border-radius:12px;padding:9px;margin-bottom:11px}
.prod-thumb.placeholder{display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(131,178,255,.14),rgba(122,240,192,.08));color:var(--blue)}
.prod-thumb.placeholder [data-lucide]{width:44px;height:44px}
.prod-card .name{font-weight:600;font-size:14px} .prod-card .vend{margin-top:7px}

/* filter bar */
.filterbar{position:relative;z-index:30;display:flex;flex-wrap:wrap;gap:10px;align-items:center;background:var(--glass);
  -webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  border:1px solid var(--line);border-radius:var(--radius);padding:13px 15px;margin-bottom:18px;box-shadow:var(--shadow)}
.filterbar label{font-size:12px;color:var(--muted);margin-right:4px;font-weight:600}
/* custom dropdown (replaces native <select>; macOS native popup font is OS-controlled & oversized) */
.cselect{position:relative;display:inline-flex;align-items:center;gap:8px;cursor:pointer;user-select:none;min-width:128px;
  background:rgba(0,0,0,.25);color:var(--text);border:1px solid var(--line-2);border-radius:9px;padding:8px 11px;font-size:13px}
.cselect:focus-visible{outline:none;border-color:var(--blue)}
.cselect.open{border-color:var(--blue)}
.cselect .cs-label{flex:1;white-space:nowrap}
.cselect .cs-chev{display:inline-flex;color:var(--muted);transition:transform .16s}
.cselect .cs-chev [data-lucide]{width:15px;height:15px}
.cselect.open .cs-chev{transform:rotate(180deg)}
.cs-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:100%;z-index:50;display:none;flex-direction:column;
  padding:5px;border-radius:11px;border:1px solid var(--line-2);background:var(--glass-solid);
  -webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);box-shadow:var(--shadow);max-height:288px;overflow:auto}
.cselect.open .cs-menu{display:flex}
.cs-opt{padding:7px 11px;border-radius:7px;font-size:13px;color:var(--text);white-space:nowrap;cursor:pointer}
.cs-opt.hl{background:rgba(255,255,255,.07)}
.cs-opt.sel{background:rgba(131,178,255,.16);color:#fff}
.filterbar .count{margin-left:auto;color:var(--muted);font-size:13px}
.filterbar .clear{cursor:pointer;color:var(--blue);font-size:13px}

/* idea card — translucent solid (no per-card backdrop-blur → keeps 70-card scroll smooth) */
.idea-card{display:flex;flex-direction:column;gap:9px;height:100%;background:var(--glass-solid);backdrop-filter:none;-webkit-backdrop-filter:none}
.idea-card .top{display:flex;align-items:center;gap:8px}
.idea-card .id{font-size:12px;color:var(--muted-2);font-weight:600;font-family:"Inter",monospace}
.idea-card h3{font-size:16px;margin:0;letter-spacing:-.01em}
.idea-card .pitch{color:var(--muted);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.idea-card .mods{display:flex;gap:8px;color:var(--blue);flex-wrap:wrap;margin-top:auto}
.idea-card .mods [data-lucide]{width:16px;height:16px}

/* before/after highlight strip */
.ba-strip .card.hov{display:flex;align-items:center;gap:13px}
.ba-strip .ic{color:var(--teal)}

/* ---- idea detail ---- */
.backlink{display:inline-flex;align-items:center;gap:6px;color:var(--muted);margin:20px 0 8px;font-size:14px}
.backlink:hover{color:var(--blue)}
.detail-head h1{font-size:clamp(24px,3.2vw,32px);margin-bottom:8px;letter-spacing:-.02em}
.detail-head .id{color:var(--muted-2);font-family:"Inter",monospace;font-weight:600}
.quote{position:relative;border-left:3px solid var(--blue-deep);background:var(--glass);
  -webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  padding:16px 20px;border-radius:0 12px 12px 0;margin:18px 0;font-size:16.5px;color:#eef3fd}
.detail-grid{display:grid;grid-template-columns:1fr 350px;gap:24px;margin-top:18px;align-items:start}
@media(max-width:900px){.detail-grid{grid-template-columns:1fr}}
.detail-grid .block{margin-bottom:24px}
.detail-grid .block h3{display:flex;align-items:center;gap:8px;font-size:17px;color:#fff}
.detail-grid .block h3 [data-lucide]{color:var(--blue)}
.bm-table,.cmp-table{width:100%;border-collapse:collapse;font-size:14px;overflow:hidden;border-radius:12px}
.bm-table td,.cmp-table td,.cmp-table th{border:1px solid var(--line);padding:10px 12px;vertical-align:top}
.bm-table td:first-child{width:130px;color:var(--muted);font-weight:600;background:rgba(255,255,255,0.03)}
.cmp-table th{background:rgba(255,255,255,0.05);font-size:13px}
.risk-list{margin:0;padding-left:18px} .risk-list li{margin-bottom:7px;color:#d7e1f3}
.modrow{display:flex;gap:11px;align-items:flex-start;padding:11px 0;border-bottom:1px solid var(--line)}
.modrow:last-child{border-bottom:0}
.modrow img{width:48px;height:48px;object-fit:contain;background:rgba(255,255,255,0.94);border-radius:9px;padding:4px;flex:none}
.modrow .mi{width:48px;height:48px;flex:none;display:flex;align-items:center;justify-content:center;
  background:rgba(131,178,255,.12);border-radius:9px;color:var(--blue)}
.modrow .mname{font-weight:600;font-size:13.5px} .modrow .mrole{color:var(--muted);font-size:12.5px}
.shortcuts{display:flex;flex-direction:column;gap:8px;margin:6px 0}
.shortcuts .btn{justify-content:flex-start;width:100%}
.related a{display:block;padding:8px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.related a:last-child{border-bottom:0}

/* ---- product page ---- */
.product-head{display:grid;grid-template-columns:300px 1fr;gap:28px;align-items:center;margin:18px 0 8px}
@media(max-width:760px){.product-head{grid-template-columns:1fr}}
.product-head .pimg{width:100%;background:rgba(255,255,255,0.95);border-radius:18px;padding:22px;aspect-ratio:4/3;object-fit:contain;box-shadow:var(--shadow)}
.product-head .pimg.placeholder{display:flex;align-items:center;justify-content:center;
  background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);color:var(--blue);border:1px solid var(--line)}
.product-head .pimg.placeholder [data-lucide]{width:84px;height:84px}
.product-head h1{font-size:clamp(24px,3.4vw,34px);letter-spacing:-.02em}
.product-head .super{font-size:21px;color:var(--teal);font-weight:600;margin:8px 0}
.exp-list{list-style:none;padding:0;margin:0}
.exp-list li{display:flex;gap:11px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line)}
.exp-list li [data-lucide]{color:var(--teal);flex:none;margin-top:2px}

/* ---- before/after ---- */
.ba-switch{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}
.split-ba{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:760px){.split-ba{grid-template-columns:1fr}}
.ba-panel{position:relative;border-radius:var(--radius);padding:22px;border:1px solid var(--line);
  -webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);box-shadow:var(--shadow)}
.ba-panel.before{background:var(--glass)}
.ba-panel.after{background:linear-gradient(160deg,rgba(63,122,214,.22),rgba(122,240,192,.1)),var(--glass-2);border-color:rgba(122,240,192,.3)}
.ba-panel h3{display:flex;align-items:center;gap:8px}
.ba-panel.before h3{color:var(--muted)} .ba-panel.after h3{color:var(--teal)}
.ba-panel ul{padding-left:18px;margin:8px 0} .ba-panel li{margin-bottom:5px}
.ba-panel .label-cap{font-size:11px;color:var(--muted-2);text-transform:uppercase;letter-spacing:.06em;margin-top:14px;font-weight:600}
.ba-panel .out-before li{color:var(--rose)} .ba-panel .out-after li{color:var(--teal)}
.ba-mods{display:flex;gap:9px;flex-wrap:wrap;color:var(--blue);margin:10px 0}

/* ---- knowledge ---- */
.kn-grid{display:grid;grid-template-columns:280px 1fr;gap:22px;align-items:start;margin-top:18px}
@media(max-width:760px){.kn-grid{grid-template-columns:1fr}}
.kn-list{position:sticky;top:88px;max-height:calc(100vh - 110px);overflow:auto;padding:8px;
  background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  border:1px solid var(--line);border-radius:var(--radius)}
.kn-list a{display:block;padding:9px 12px;border-radius:9px;color:var(--muted);font-size:13.5px;border:1px solid transparent}
.kn-list a:hover{background:rgba(255,255,255,0.05)}
.kn-list a.active{background:rgba(131,178,255,.14);color:var(--text);border-color:var(--line-2)}
.prose{max-width:820px;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 30px;box-shadow:var(--shadow)}
.prose h1{font-size:25px} .prose h2{font-size:20px;margin-top:1.4em;border-bottom:1px solid var(--line);padding-bottom:.3em}
.prose h3{font-size:17px;margin-top:1.2em} .prose p{color:#d7e1f3}
.prose ul,.prose ol{padding-left:22px} .prose li{margin-bottom:5px;color:#d7e1f3}
.prose code{background:rgba(255,255,255,0.07);padding:1px 6px;border-radius:5px;font-size:13px}
.prose pre{background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto}
.prose pre code{background:none;padding:0}
.prose table{border-collapse:collapse;width:100%;font-size:13.5px;margin:1em 0;display:block;overflow:auto}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose th{background:rgba(255,255,255,0.05)}
.prose blockquote{border-left:3px solid var(--blue-deep);margin:1em 0;padding:2px 16px;color:var(--muted);background:rgba(255,255,255,0.03)}
.prose a{word-break:break-word}

/* footer */
.foot{margin:52px 0 34px;color:var(--muted-2);font-size:12.5px;text-align:center;border-top:1px solid var(--line);padding-top:20px}

/* entrance micro-animation (applied by js/lib/dom.js → animateIn, only on view enter) */
@keyframes reveal{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.reveal{animation:reveal .45s cubic-bezier(.2,.8,.2,1) both;will-change:opacity,transform}

/* ============================================================
   "ติดตั้งจริง" page (physical integration explainer)
   ============================================================ */
/* shared badges + icon tiles */
.idx,.letter{display:inline-flex;align-items:center;justify-content:center;font-family:"Inter",sans-serif;font-weight:700;flex:none}
.idx{width:30px;height:30px;border-radius:9px;background:linear-gradient(150deg,var(--blue-deep),#2f5fb0);color:#fff;font-size:15px}
.letter{width:40px;height:40px;border-radius:12px;color:var(--blue);font-size:20px;
  background:linear-gradient(150deg,rgba(131,178,255,.2),rgba(122,240,192,.12));border:1px solid var(--line-2)}
.fmt-ic,.pat-ic{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--blue);flex:none}
.fmt-ic [data-lucide],.pat-ic [data-lucide]{width:20px;height:20px}

/* step 1 — form-factor ladder */
.flow{display:flex;align-items:stretch;flex-wrap:wrap;gap:10px;margin:4px 0 18px}
.flow .step{flex:1 1 0;min-width:150px;display:flex;flex-direction:column;gap:3px;justify-content:center;padding:13px 15px;
  border-radius:14px;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid var(--line)}
.flow .step .lbl{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-2);font-weight:600}
.flow .step .v{font-weight:600;font-size:14.5px}
.flow .arrow{display:flex;align-items:center;color:var(--blue);flex:none}
@media(max-width:620px){.flow .step{flex-basis:100%}.flow .arrow{transform:rotate(90deg);align-self:center}}
.fmt-card,.pattern-card{display:flex;flex-direction:column;gap:6px;height:100%}
.fmt-top,.pat-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px}
.fmt-card .fit{align-self:flex-start}
.fmt-card h3,.pattern-card h3{font-size:16.5px;margin:.1em 0}
.fmt-card p,.pattern-card p{margin:0 0 .3em;font-size:13.5px;color:#d7e1f3}
.pattern-card .label-cap{font-size:11px;color:var(--muted-2);text-transform:uppercase;letter-spacing:.06em;margin:8px 0 0;font-weight:600}

/* step 2 — connection rows */
.conn-list{display:flex;flex-direction:column;gap:12px}
.conn-row{display:flex;gap:14px;align-items:flex-start;padding:15px 16px}
.conn-row.key{border-color:rgba(255,207,110,.4);background:linear-gradient(160deg,rgba(255,207,110,.08),var(--glass))}
.conn-ic{flex:none;display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;
  background:rgba(131,178,255,.12);border:1px solid var(--line);color:var(--blue)}
.conn-ic [data-lucide]{width:22px;height:22px}
.conn-body{flex:1;min-width:0}
.conn-body h3{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:16px;margin:.1em 0 .3em}
.conn-body>p{margin:0;color:#d7e1f3;font-size:13.5px}

/* step 3 — placement example box */
.eg{margin-top:8px;border:1px solid rgba(122,240,192,.28);border-radius:12px;padding:12px 13px;
  background:linear-gradient(160deg,rgba(122,240,192,.1),rgba(63,122,214,.06))}
.eg-head{display:flex;align-items:center;gap:6px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--teal);font-weight:600;margin-bottom:4px}
.eg-head [data-lucide]{width:14px;height:14px}
.eg-name{font-weight:700;color:#eafff5;margin-bottom:3px}
.eg .chip-row{margin-top:8px}

/* two-tier reveal — engineer detail under an exec line */
details.tech{margin-top:auto;padding-top:6px}
details.tech summary{display:flex;align-items:center;gap:7px;cursor:pointer;list-style:none;color:var(--muted);font-size:12.5px;font-weight:600;padding:6px 0}
details.tech summary::-webkit-details-marker{display:none}
details.tech summary:hover{color:var(--blue)}
details.tech summary [data-lucide]{width:15px;height:15px}
details.tech .chev{display:inline-flex;transition:transform .18s}
details.tech[open] .chev{transform:rotate(90deg)}
.tech-body{border-left:2px solid var(--line-2);padding:4px 0 6px 12px;margin:2px 0 2px 6px}
.tech-body p{margin:0;color:var(--muted);font-size:12.8px;line-height:1.5}

/* ---- end-to-end flow diagram (tesaiot.com-style hero) ---- */
.flowdiag{margin:18px 0 26px}
.fd-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;padding-bottom:4px}
.fd-heads{display:grid;grid-template-columns:25% 50% 25%;min-width:780px;margin-bottom:10px;
  font-size:12px;font-weight:600;letter-spacing:.03em;color:var(--muted)}
.fd-heads span:nth-child(1){text-align:left}
.fd-heads span:nth-child(2){text-align:center;color:var(--blue)}
.fd-heads span:nth-child(3){text-align:right}
.fd-stage{position:relative;min-width:780px;height:480px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background-color:rgba(8,14,28,.5);box-shadow:var(--shadow);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  background-image:
    radial-gradient(58% 80% at 42% 50%, rgba(255,207,110,.08), transparent 60%),
    radial-gradient(48% 80% at 63% 50%, rgba(122,240,192,.08), transparent 60%),
    radial-gradient(circle at center, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:auto,auto,22px 22px}
.fd-links{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.fd-links path{fill:none;stroke-width:2;vector-effect:non-scaling-stroke;opacity:.82;
  stroke-dasharray:5 9;animation:fd-dash 1.1s linear infinite}
.fd-links .fd-tls-line{stroke-dasharray:3 5;opacity:.95;animation:fd-dash2 .8s linear infinite}
@keyframes fd-dash{to{stroke-dashoffset:-14}}
@keyframes fd-dash2{to{stroke-dashoffset:-8}}
.fd-node{position:absolute;transform:translateY(-50%);z-index:2;display:flex;align-items:center;gap:9px;
  padding:10px 12px;border-radius:13px;border:1px solid var(--line);background:var(--glass-solid);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);box-shadow:0 8px 22px -10px rgba(0,0,0,.6)}
.fd-node .fd-ic{flex:none;display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  color:var(--c);background:color-mix(in srgb,var(--c) 16%, transparent);border:1px solid color-mix(in srgb,var(--c) 40%, transparent)}
.fd-node .fd-ic [data-lucide]{width:19px;height:19px}
.fd-name{font-weight:600;font-size:13px;line-height:1.2;color:var(--text)}
.fd-sub{font-size:11px;color:var(--muted);margin-top:1px}
.fd-node.src{border-left:3px solid var(--c)}
.fd-node.app{border-right:3px solid var(--c)}
.fd-node.gw,.fd-node.pf{padding:13px 14px;border-color:color-mix(in srgb,var(--c) 55%, var(--line));
  box-shadow:0 0 0 1px color-mix(in srgb,var(--c) 28%, transparent),0 10px 34px -8px color-mix(in srgb,var(--c) 48%, transparent);
  animation:fd-glow 3s ease-in-out infinite}
.fd-node.pf{animation-delay:.6s}
.fd-node.gw .fd-name,.fd-node.pf .fd-name{font-size:14px}
@keyframes fd-glow{0%,100%{filter:brightness(1)}50%{filter:brightness(1.13)}}
.fd-tls{position:absolute;left:53%;top:calc(50% - 26px);transform:translateX(-50%);z-index:3;white-space:nowrap;
  font-size:10.5px;font-weight:600;color:var(--amber);letter-spacing:.03em;
  background:rgba(8,14,28,.72);border:1px solid rgba(255,207,110,.42);border-radius:999px;padding:2px 9px}
.fd-cap{margin-top:12px;font-size:12.5px;color:#cdd9f0;display:flex;align-items:flex-start;gap:7px;line-height:1.5}
.fd-cap [data-lucide]{color:var(--teal);width:16px;height:16px;flex:none;margin-top:2px}
.fd-cap .muted{color:var(--muted-2)}
@media(max-width:820px){.flowdiag::before{content:"เลื่อนแนวนอนเพื่อดูทั้งหมด →";display:block;font-size:11px;color:var(--muted-2);margin-bottom:6px}}

/* reduced motion */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{animation:none!important;opacity:1!important;transform:none!important}
}