/* Smart Gauge website: the gauge's own board (ground, graphite chrome, steel hairlines, amber voice, white LED figures) */
:root{
  --ground:#070707;--cell:#0d0e10;--chrome:#141619;--hair:#272b30;--white:#f3f0e6;--muted:#9aa0a7;--dim:#6f747b;
  --accent:#ffae1a;--accent-2:#d6a25a;--accent-ink:#140d00;--strip:#0b0a07;--strip-line:#241d10;
  --green:#3ddc68;--red:#ff4436;--seg-off:#1e2125;
  --th:"Anuphan",system-ui,sans-serif;--num:"Chakra Petch","Anuphan",system-ui,sans-serif;
  --ease:cubic-bezier(.23,1,.32,1);
  --wrap:1200px;--gut:clamp(16px,4vw,40px);
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--ground);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--ground);color:var(--white);font:400 17px/1.6 var(--th);-webkit-font-smoothing:antialiased;min-height:100dvh;overflow-x:hidden}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
html{scrollbar-color:#2c3036 var(--ground)}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--ground)}::-webkit-scrollbar-thumb{background:#2c3036;border-radius:8px;border:2px solid var(--ground)}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}
img{display:block;max-width:100%;height:auto}
.ph{display:inline-block}
.num{font-family:var(--num);font-variant-numeric:tabular-nums;letter-spacing:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}

/* status strip: the gauge's top row */
.strip{position:sticky;top:0;z-index:20;background:rgba(11,10,7,.92);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--strip-line)}
.strip .wrap{display:flex;align-items:center;gap:18px;height:56px}
.brand{display:flex;align-items:center;gap:10px;color:var(--white);text-decoration:none;font:600 16px/1 var(--num);letter-spacing:.08em}
.brand .led{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(61,220,104,.16)}
.brand b{color:var(--accent);font-weight:700}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--muted);text-decoration:none;font-size:15px;padding:8px 12px;border-radius:6px;transition:color .15s ease}
.nav a:hover{color:var(--white)}
.nav a[aria-current]{color:var(--white)}

/* the one reversed plate: amber, ink text */
.plate{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 22px;border-radius:8px;border:0;cursor:pointer;
  background:var(--accent);color:var(--accent-ink);font:700 17px/1 var(--th);text-decoration:none;transition:transform .16s var(--ease),background-color .15s ease}
.plate:hover{background:#ffbd45}
.plate:active{transform:scale(.97)}
.plate svg{width:20px;height:20px;flex:none}
.plate.sm{min-height:38px;padding:0 14px;font-size:15px;border-radius:6px}
.ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 18px;border-radius:8px;cursor:pointer;
  background:transparent;color:var(--white);border:1px solid #3a3f46;font:600 16px/1 var(--th);text-decoration:none;transition:border-color .15s ease,transform .16s var(--ease)}
.ghost:hover{border-color:var(--accent-2)}
.ghost:active{transform:scale(.97)}
.ghost svg{width:18px;height:18px;flex:none}

/* message strip: amber sentence on the board's dark amber */
.say{background:var(--strip);border:1px solid var(--strip-line);border-radius:8px;color:var(--accent);font-weight:600;padding:14px 18px}

/* sections */
.sec{padding:clamp(72px,10vw,128px) 0}
.sec+.sec{border-top:1px solid #15171a}
.h2{font:700 clamp(30px,4.4vw,46px)/1.2 var(--th);letter-spacing:-.01em;color:var(--white);text-wrap:balance;max-width:20ch}
.h2 em{font-style:normal;color:var(--accent)}
.lede{color:var(--muted);font-size:clamp(17px,1.6vw,19px);max-width:56ch;margin-top:14px}

/* spec rows (hairlines, label left) */
.rows{border-top:1px solid var(--hair)}
.rows>div{display:grid;grid-template-columns:minmax(120px,220px) 1fr;gap:6px 28px;padding:20px 0;border-bottom:1px solid var(--hair)}
.rows dt{color:var(--accent-2);font-weight:600}
.rows dd{color:var(--white)}
.rows dd small{display:block;color:var(--muted);font-size:15px;margin-top:4px}

/* FAQ */
.faq{border-top:1px solid var(--hair);margin-top:36px}
.faq details{border-bottom:1px solid var(--hair)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-weight:600;font-size:18px}
.faq summary::-webkit-details-marker{display:none}
.faq summary svg{width:20px;height:20px;color:var(--accent);flex:none;transition:transform .2s var(--ease)}
.faq details[open] summary svg{transform:rotate(90deg)}
.faq details p{color:var(--muted);padding:0 0 22px;max-width:68ch}

.foot{border-top:1px solid #15171a;padding:36px 0 48px;color:var(--dim);font-size:14px}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
.foot a{color:var(--muted)}

.note{color:var(--dim);font-size:13.5px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted)}
.ok{color:var(--green)}.warn{color:var(--accent)}.bad{color:var(--red)}

@media (max-width:760px){
  body{font-size:16px}
  .nav{display:none}
  .strip .plate.sm{margin-left:auto}
  .rows>div{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation:none!important;scroll-behavior:auto!important}}