/* TPS Battery — design system (shared by tpsbattery.com and dealer.tpsbattery.com)
   Static, CSP-safe (no inline styles/scripts), local fonts only. */
@font-face{font-family:"Prompt";src:url("../fonts/Prompt-Regular.woff2") format("woff2"),url("../fonts/Prompt-Regular.ttf") format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:"Prompt";src:url("../fonts/Prompt-Medium.woff2") format("woff2"),url("../fonts/Prompt-Medium.ttf") format("truetype");font-weight:500;font-display:swap}
@font-face{font-family:"Prompt";src:url("../fonts/Prompt-Bold.woff2") format("woff2"),url("../fonts/Prompt-Bold.ttf") format("truetype");font-weight:700;font-display:swap}

:root{
  --ink:#0b0b0d; --ink-2:#141418; --ink-3:#1d1d23; --line-dark:#2a2a32;
  --paper:#f6f6f8; --card:#fff; --line:#e4e4ea;
  --text:#14141a; --muted:#5b5d6b; --on-dark:#f4f4f6; --on-dark-muted:#a7a9b6;
  --red:#dc2219; --red-600:#c81d15; --red-glow:rgba(226,35,26,.35);
  --purple:#5b2a9b; --water:#6d3fd1; --smf:#e2231a;
  --radius:16px; --radius-sm:10px; --shadow:0 1px 2px rgba(16,16,24,.06),0 8px 24px rgba(16,16,24,.06);
  --shadow-lg:0 24px 60px rgba(0,0,0,.35);
  --max:1180px; --gutter:clamp(16px,4vw,32px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"Prompt",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--paper)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{line-height:1.25;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--red);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:16px;z-index:100;background:#fff;color:#000;padding:8px 14px;border-radius:8px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hidden{display:none!important}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:46px;padding:0 22px;border-radius:999px;border:0;
  font:inherit;font-weight:500;text-decoration:none;cursor:pointer;transition:transform .2s var(--ease),background .2s,box-shadow .2s,color .2s}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 24px var(--red-glow)}
.btn-primary:hover{background:var(--red-600);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.08);color:var(--on-dark);border:1px solid rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-3)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,11,13,.86);backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;gap:16px;max-width:var(--max);margin:0 auto;padding:10px var(--gutter);min-height:68px}
.brand img{width:112px;height:auto}
.nav{margin-left:auto}
.nav ul{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav a{display:block;padding:10px 14px;border-radius:999px;color:var(--on-dark-muted);text-decoration:none;font-size:.95rem;transition:color .2s,background .2s}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;background:rgba(255,255,255,.08)}
.nav a.nav-dealer{background:var(--red);color:#fff;margin-left:8px;padding:10px 18px}
.nav a.nav-dealer:hover{background:var(--red-600)}
.nav-toggle{display:none;margin-left:auto;min-width:46px;min-height:46px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;font:inherit;cursor:pointer}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 14px}
  .nav{position:absolute;left:0;right:0;top:100%;background:var(--ink);border-bottom:1px solid var(--line-dark);display:none}
  .nav.open{display:block}
  .nav ul{flex-direction:column;align-items:stretch;padding:8px var(--gutter) 16px}
  .nav a{padding:14px 12px;border-radius:10px}
  .nav a.nav-dealer{margin:8px 0 0;text-align:center}
}

/* Hero (home) */
.hero{position:relative;overflow:hidden;color:var(--on-dark);background:
  radial-gradient(900px 480px at 85% 30%,rgba(226,35,26,.28),transparent 60%),
  radial-gradient(700px 400px at 10% 0%,rgba(91,42,155,.22),transparent 60%),
  linear-gradient(180deg,#0b0b0d,#121216)}
.hero::after{content:"";position:absolute;inset:0;opacity:.0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(180deg,#000,transparent 85%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);pointer-events:none}
.hero{background:#07070a url("../img/bg-hero.jpg") center bottom/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,7,10,.92) 0%,rgba(7,7,10,.7) 38%,rgba(7,7,10,.1) 70%),linear-gradient(0deg,rgba(7,7,10,.95) 0%,transparent 35%)}
.hero-inner{position:relative;z-index:1;min-height:min(78vh,640px);display:flex;flex-direction:column;justify-content:center;padding:clamp(48px,8vw,96px) 0 clamp(32px,5vw,56px);max-width:620px}
.hero h1{font-size:clamp(2.1rem,5vw,3.6rem);margin:.3em 0 .35em}
.hero h1 .accent{color:var(--red)}
.hero p.lead{color:var(--on-dark-muted);font-size:1.1rem;max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-art{position:relative}
.hero-art img{width:100%;filter:drop-shadow(0 30px 50px rgba(0,0,0,.6))}
.hero-art::before{content:"";position:absolute;left:10%;right:10%;bottom:6%;height:30%;background:radial-gradient(closest-side,var(--red-glow),transparent);filter:blur(10px)}
@media (max-width:860px){.hero{background-image:url("../img/bg-hero-m.jpg");background-position:62% bottom}.hero::before{background:linear-gradient(180deg,rgba(7,7,10,.85) 0%,rgba(7,7,10,.55) 45%,rgba(7,7,10,.95) 100%)}.hero-inner{min-height:auto;padding-bottom:180px}}

.stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.08)}
.stat{padding:22px 8px;text-align:center}
.stat + .stat{border-left:1px solid rgba(255,255,255,.08)}
.stat b{display:block;font-size:clamp(1.4rem,3vw,2rem);color:#fff}
.stat span{font-size:.9rem;color:var(--on-dark-muted)}

/* Page header (inner pages) */
.page-hero{color:var(--on-dark);background:radial-gradient(700px 300px at 90% 0%,rgba(226,35,26,.25),transparent 60%),linear-gradient(180deg,#0b0b0d,#16161b)}
.page-hero .container{padding-top:clamp(40px,6vw,72px);padding-bottom:clamp(32px,5vw,56px)}
.page-hero h1{font-size:clamp(1.9rem,4.2vw,3rem);margin:.25em 0 .2em}
.page-hero p{color:var(--on-dark-muted);max-width:44em;margin:0}
.page-hero .brand-mark{height:44px;width:auto;margin-bottom:6px;background:#fff;padding:8px 14px;border-radius:10px}
.page-hero.theme-spark{background:radial-gradient(700px 320px at 85% 10%,rgba(124,58,237,.45),transparent 60%),linear-gradient(180deg,#140b24,#1b1030)}
.page-hero.theme-spark .eyebrow{color:#b18cff}
.page-hero.theme-varta{background:radial-gradient(700px 320px at 85% 10%,rgba(0,82,165,.5),transparent 60%),linear-gradient(180deg,#07142a,#0c1d38)}
.page-hero.theme-varta .eyebrow{color:#7fb2ff}

/* Sections & cards */
.section{padding:clamp(40px,7vw,88px) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px;margin-bottom:28px}
.section-head h2{font-size:clamp(1.5rem,3vw,2.2rem);margin:.2em 0 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(20px,3vw,36px)}
.card + .card{margin-top:24px}
.prose{max-width:46em}
.prose p{color:#2b2d38}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
.split.media-left > :first-child{order:-1}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.media{border-radius:var(--radius);overflow:hidden;background:var(--ink);box-shadow:var(--shadow-lg)}
.media img{width:100%}
.media.light{background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);display:grid;place-items:center;padding:24px}

/* Brand tiles (home) */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.tiles{grid-template-columns:1fr}}
.tile{position:relative;display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;text-decoration:none;color:#fff;background:var(--ink-2);min-height:360px;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tile-media{aspect-ratio:16/10;overflow:hidden;background:#000}
.tile-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.tile:hover .tile-media img{transform:scale(1.05)}
.tile-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:6px;flex:1}
.tile-body h3{font-size:1.35rem;margin:0}
.tile-body p{color:var(--on-dark-muted);margin:0;font-size:.95rem}
.tile-link{margin-top:auto;padding-top:14px;display:inline-flex;align-items:center;gap:6px;font-weight:500;color:#fff}
.tile-link svg{width:18px;height:18px;transition:transform .2s}
.tile:hover .tile-link svg{transform:translateX(4px)}
.tile.spark{background:linear-gradient(180deg,#1b1030,#120a20)}
.tile.varta{background:linear-gradient(180deg,#0c1d38,#07142a)}
.tile.export{background:linear-gradient(180deg,#2a1a08,#170e05)}

/* Feature grid */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:8px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px}
.feature .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(226,35,26,.1);color:var(--red);margin-bottom:12px}
.feature .ico svg{width:22px;height:22px}
.feature h3{font-size:1.05rem;margin:0 0 .3em}
.feature p{margin:0;color:var(--muted);font-size:.95rem}
.on-dark .feature{background:var(--ink-2);border-color:var(--line-dark)}
.on-dark .feature p{color:var(--on-dark-muted)}

/* Products */
.products{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.product{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.product-media{background:radial-gradient(circle at 50% 60%,#fff,#eef0f4);display:grid;place-items:center;padding:28px;min-height:220px}
.product-media img{max-height:200px;width:auto}
.product-body{padding:20px 24px 24px}
.product-body h3{margin:0 0 .4em;font-size:1.2rem}
.product-body p{margin:0;color:#3a3c48;font-size:.96rem}
.chip{display:inline-block;font-size:.78rem;font-weight:500;padding:3px 10px;border-radius:999px;background:#f0f0f4;color:#3a3c48;margin-bottom:10px}

/* Spec table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;min-width:760px}
table.spec th,table.spec td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
table.spec thead th{background:var(--ink);color:#fff;font-weight:500;position:sticky;top:0}
table.spec tbody tr:nth-child(even){background:#fafafb}
table.spec img{width:56px;height:auto}
.pending{color:var(--muted);font-style:italic}

/* Notes (internal, mockup only) */
.note{margin-top:20px;padding:14px 16px;border-radius:var(--radius-sm);background:#fff7e6;border:1px solid #f5d38a;color:#6b4a00;font-size:.9rem}
.note::before{content:"หมายเหตุสำหรับผู้ตรวจ · ";font-weight:700}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:24px}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.contact-list{list-style:none;margin:0;padding:0}
.contact-list li{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.contact-list li:last-child{border-bottom:0}
.contact-list span:first-child{color:var(--muted)}
.contact-list a{color:var(--red);text-decoration:none;font-weight:500}
.contact-list a:hover{text-decoration:underline}
address{font-style:normal;line-height:1.8}
.addr-th{color:var(--muted);margin-top:8px}
@media (max-width:520px){.contact-list li{flex-direction:column;gap:2px}}

/* CTA band */
.cta-band{position:relative;overflow:hidden;border-radius:calc(var(--radius) + 4px);padding:clamp(28px,5vw,48px);color:#fff;
  background:radial-gradient(600px 240px at 100% 0%,rgba(255,255,255,.18),transparent 60%),linear-gradient(120deg,var(--red),#8f120c)}
.cta-band .row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-band h2{margin:0;font-size:clamp(1.4rem,3vw,2rem)}
.cta-band p{margin:.3em 0 0;opacity:.85}
.cta-band .btn{background:#fff;color:var(--red)}
.cta-band .btn:hover{background:#ffecea}

/* Footer */
.site-footer{background:var(--ink);color:var(--on-dark-muted);padding:48px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr}}
.site-footer h3, .site-footer .footer-title{color:#fff;font-size:.95rem;margin:0 0 12px;font-weight:500}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:6px 0}
.site-footer a{color:var(--on-dark-muted);text-decoration:none}
.site-footer a:hover{color:#fff}
.footer-brand img{width:120px;margin-bottom:12px}
.footer-bottom{border-top:1px solid var(--line-dark);margin-top:32px;padding-top:20px;font-size:.85rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* refinements */
.hero{background-position:72% 100%;background-size:cover}
@media (min-width:1400px){.hero{background-position:right bottom}}
.hero .stats{background:linear-gradient(0deg,rgba(7,7,10,.85),rgba(7,7,10,.4));backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
@media (max-width:860px){.hero{background-size:220% auto;background-position:58% 100%;background-color:#07070a}.hero-inner{padding-bottom:clamp(200px,58vw,300px)}}
.section.page-hero .container{padding-top:0;padding-bottom:0}
.theme-spark .feature .ico{background:rgba(177,140,255,.14);color:#c4a6ff}
.theme-varta .feature .ico{background:rgba(127,178,255,.14);color:#9cc4ff}
@media (min-width:861px){.hero{background-size:125% auto;background-position:12.5vw 100%}}

.mb-logo{width:auto;height:56px;margin-bottom:16px}
.section-tight{padding-top:0}
.media.light img.tall{max-height:420px;width:auto}
.on-dark h2{color:#fff}
.on-dark .hero-cta{margin-top:24px}

/* ===== model tables ===== */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.products-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.products-3 .product-media img{max-height:170px;width:auto;object-fit:contain}
.model-wrap{overflow-x:auto;margin-top:24px;border:1px solid var(--line,#e3e4ea);border-radius:16px;background:#fff}
.model-table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:560px}
.model-table th,.model-table td{padding:12px 16px;text-align:left;border-bottom:1px solid #eeeff3}
.model-table thead th{background:#14141a;color:#fff;font-weight:500}
.model-table tbody th{font-weight:600}
.model-table tbody tr:nth-child(even){background:#fafafb}
.model-table tbody tr:last-child th,.model-table tbody tr:last-child td{border-bottom:none}
.model-note{margin:12px 0 0;color:#6a6c78;font-size:.88rem}
.model-cta{margin:20px 0 0}