/* MasterX — ECU Support Pages (shared) */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#080808;--surface:#111;--surface2:#161616;--border:rgba(255,255,255,.08);
  --text:#f4f4f5;--muted:#9ca3af;--dim:#6b7280;
  --red:#dc2626;--red-dim:rgba(220,38,38,.12);
  --stage:#f59e0b;--stage-dim:rgba(245,158,11,.12);
  --auto:#3b82f6;--trucks:#8b5cf6;--agri:#22c55e;--btp:#f97316;
  --mono:'JetBrains Mono','SF Mono','Consolas',monospace;
  --sans:'Inter',system-ui,sans-serif;
  --header-h:64px;--toolbar-h:72px;
  --radius:12px;--radius-sm:8px;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:200;background:rgba(8,8,8,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.site-header nav{position:relative}
.nav-inner{display:flex;align-items:center;gap:16px;max-width:1280px;margin:0 auto;padding:0 24px;height:var(--header-h)}
.logo img{height:42px;width:auto}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;list-style:none}
.nav-links li{display:flex}
.nav-links a{padding:8px 12px;font-size:.84rem;font-weight:500;color:var(--muted);border-radius:var(--radius-sm);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.05)}
.nav-cta{margin-left:8px;background:var(--red);color:#fff;padding:9px 18px;border-radius:var(--radius-sm);font-size:.82rem;font-weight:700;white-space:nowrap;transition:.2s}
.nav-cta:hover{background:#b91c1c}
.lang-switch{margin-left:6px;padding:7px 12px;font-size:.78rem;font-weight:600;color:var(--muted);border:1px solid var(--border);border-radius:var(--radius-sm);transition:.2s}
.lang-switch:hover{color:#fff;border-color:rgba(255,255,255,.18)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.hamburger span{width:20px;height:2px;background:var(--muted);border-radius:1px}

/* Hero */
.page-hero{padding:48px 0 32px;border-bottom:1px solid var(--border)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:.76rem;color:var(--dim);margin-bottom:20px}
.crumbs a{color:var(--muted);transition:color .2s}
.crumbs a:hover{color:#fff}
.crumbs i{font-size:.55rem}
.crumbs .current{color:var(--red);font-weight:600}
.hero-eyebrow{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:12px}
.page-hero h1{font-size:clamp(1.85rem,4vw,2.75rem);font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:14px}
.page-hero h1 em{font-style:normal;color:var(--red)}
.hero-lede{max-width:680px;font-size:.98rem;color:var(--muted);margin-bottom:28px}
.stats-row{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;max-width:900px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 12px;text-align:center}
.stat-val{font-size:1.55rem;font-weight:800;letter-spacing:-.02em;line-height:1}
.stat-val small{font-size:.65em;font-weight:700;color:var(--red)}
.stat-lbl{font-size:.65rem;color:var(--dim);text-transform:uppercase;letter-spacing:.1em;font-weight:600;margin-top:6px}

/* Sticky toolbar */
.toolbar-wrap{position:sticky;top:var(--header-h);z-index:150;background:rgba(8,8,8,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:14px 0;min-height:var(--toolbar-h)}
.search-field{flex:1;min-width:220px;position:relative}
.search-field i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--dim);font-size:.82rem;pointer-events:none}
.search-field input{width:100%;padding:11px 14px 11px 40px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:#fff;font-size:.88rem;transition:.2s}
.search-field input:focus{outline:none;border-color:rgba(220,38,38,.45);box-shadow:0 0 0 3px var(--red-dim)}
.search-field input::placeholder{color:var(--dim)}
.filter-group{display:flex;flex-wrap:wrap;gap:6px}
.filter-btn{padding:8px 14px;font-size:.78rem;font-weight:600;color:var(--muted);background:var(--surface);border:1px solid var(--border);border-radius:999px;cursor:pointer;transition:.2s;white-space:nowrap}
.filter-btn:hover{color:#fff;border-color:rgba(255,255,255,.15)}
.filter-btn.active{color:#fff;background:var(--red-dim);border-color:rgba(220,38,38,.4)}
.filter-btn[data-cat="auto"].active{background:rgba(59,130,246,.12);border-color:rgba(59,130,246,.35);color:#93c5fd}
.filter-btn[data-cat="trucks"].active{background:rgba(139,92,246,.12);border-color:rgba(139,92,246,.35);color:#c4b5fd}
.filter-btn[data-cat="agri"].active{background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.35);color:#86efac}
.filter-btn[data-cat="btp"].active{background:rgba(249,115,22,.12);border-color:rgba(249,115,22,.35);color:#fdba74}
.result-count{font-size:.78rem;color:var(--dim);font-weight:500;margin-left:auto;white-space:nowrap}

/* Stage 1 highlight */
.stage1-banner{margin:28px 0;padding:20px 24px;background:linear-gradient(135deg,rgba(245,158,11,.06),transparent);border:1px solid rgba(245,158,11,.2);border-radius:var(--radius);display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}
.stage1-banner h2{font-size:1.05rem;font-weight:800;display:flex;align-items:center;gap:10px}
.stage1-banner h2 i{color:var(--stage)}
.stage1-banner p{font-size:.86rem;color:var(--muted);margin-top:4px}
.stage1-meta{display:flex;gap:20px}
.stage1-meta div{text-align:center}
.stage1-meta strong{display:block;font-size:1.2rem;font-weight:800;color:var(--stage)}
.stage1-meta span{font-size:.68rem;color:var(--dim);text-transform:uppercase;letter-spacing:.08em}

/* Category sections */
.catalog{padding:8px 0 64px}
.cat-block{margin-top:36px}
.cat-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.cat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.cat-icon[data-cat="auto"]{background:rgba(59,130,246,.1);color:#60a5fa}
.cat-icon[data-cat="trucks"]{background:rgba(139,92,246,.1);color:#a78bfa}
.cat-icon[data-cat="agri"]{background:rgba(34,197,94,.1);color:#4ade80}
.cat-icon[data-cat="btp"]{background:rgba(249,115,22,.1);color:#fb923c}
.cat-head h2{font-size:1.15rem;font-weight:800;letter-spacing:-.02em}
.cat-head .cat-count{font-size:.75rem;color:var(--dim);font-weight:500;margin-left:auto}

/* Brand grid */
.brand-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:14px}
.brand-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .2s,transform .2s}
.brand-card:hover{border-color:rgba(255,255,255,.14)}
.brand-card.hidden{display:none}
.brand-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:16px 18px 12px;border-bottom:1px solid var(--border)}
.brand-name{font-size:.95rem;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:.72rem;color:var(--dim);margin-top:3px;line-height:1.4}
.brand-badge{font-size:.68rem;font-weight:700;padding:4px 9px;border-radius:999px;background:var(--surface2);border:1px solid var(--border);color:var(--muted);white-space:nowrap}
.brand-card-body{padding:14px 18px 16px}
.ecu-grid{display:flex;flex-wrap:wrap;gap:5px}
.ecu-chip{font-family:var(--mono);font-size:.7rem;font-weight:600;padding:5px 9px;border-radius:6px;background:var(--surface2);border:1px solid var(--border);color:#d4d4d8;letter-spacing:.02em;transition:.15s}
.ecu-chip:hover{border-color:rgba(255,255,255,.18);color:#fff}
.ecu-chip--stage{border-color:rgba(245,158,11,.35);background:rgba(245,158,11,.08);color:#fcd34d}
.ecu-chip--immo{display:inline-flex;align-items:center;gap:6px;flex-wrap:wrap}
.immo-type{font-family:var(--sans);font-size:.55rem;font-weight:800;padding:2px 6px;border-radius:4px;letter-spacing:.05em;text-transform:uppercase;white-space:nowrap}
.immo-type--flash{background:rgba(255,140,66,.2);color:#ff8c42;border:1px solid rgba(255,140,66,.35)}
.immo-type--eeprom{background:rgba(187,143,206,.2);color:#bb8fce;border:1px solid rgba(187,143,206,.35)}
.immo-type--fe{background:rgba(72,201,176,.2);color:#48c9b0;border:1px solid rgba(72,201,176,.35)}
.coverage-notice--immo{border-left-color:#ff8c42}
.immo-pill-flash{border-color:rgba(255,140,66,.3);color:#ff8c42;background:rgba(255,140,66,.08)}
.immo-pill-eeprom{border-color:rgba(187,143,206,.3);color:#bb8fce;background:rgba(187,143,206,.08)}
.immo-pill-fe{border-color:rgba(72,201,176,.3);color:#48c9b0;background:rgba(72,201,176,.08)}
.immo-banner{background:linear-gradient(135deg,rgba(255,140,66,.06),transparent);border-color:rgba(255,140,66,.22)}
.immo-banner h2 i{color:#ff8c42}
.immo-banner .stage1-meta strong{color:#ff8c42}
.info-strip--immo{border-color:rgba(255,140,66,.2);background:rgba(255,140,66,.04)}
.info-strip--immo i{color:#ff8c42}
.ecu-chip.match{background:var(--red-dim);border-color:rgba(220,38,38,.4);color:#fff}

.stage1-only .ecu-chip:not(.is-stage1){display:none}

/* Empty state */
.empty-state{text-align:center;padding:80px 24px;color:var(--dim)}
.empty-state i{font-size:2rem;opacity:.35;margin-bottom:14px}
.empty-state h3{color:var(--muted);font-size:1.05rem;margin-bottom:6px}

/* Info + footer */
.info-strip{margin:0 0 40px;padding:18px 22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:flex;gap:16px;align-items:flex-start;font-size:.86rem;color:var(--muted)}
.info-strip i{color:var(--red);margin-top:2px;flex-shrink:0}
.info-strip strong{color:#fff}
.site-footer{margin-top:40px;padding:32px 0;border-top:1px solid var(--border);text-align:center;font-size:.78rem;color:var(--dim)}
.site-footer a{color:var(--muted);transition:color .2s}
.site-footer a:hover{color:#fff}
.back-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;background:var(--red);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;box-shadow:0 8px 24px rgba(220,38,38,.35);opacity:0;visibility:hidden;transition:.25s;cursor:pointer;z-index:100}
.back-top.show{opacity:1;visibility:visible}

@media(max-width:900px){
  .stats-row{grid-template-columns:repeat(3,1fr)}
  .brand-grid{grid-template-columns:1fr}
  .stage1-banner{grid-template-columns:1fr}
  .stage1-meta{justify-content:flex-start}
}
/* Module tabs */
.module-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.module-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;font-size:.82rem;font-weight:700;color:var(--muted);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:.2s}
.module-tab:hover{color:#fff;border-color:rgba(255,255,255,.14)}
.module-tab.active{color:#fff;background:var(--red-dim);border-color:rgba(220,38,38,.45)}
.module-tab[data-mod="stage1"].active{background:var(--stage-dim);border-color:rgba(245,158,11,.4);color:#fcd34d}
.module-tab[data-mod="immo"].active{background:rgba(255,140,66,.1);border-color:rgba(255,140,66,.35);color:#ff8c42}
.module-tab[data-mod="dtc"].active{background:rgba(239,68,68,.1);border-color:rgba(239,68,68,.35);color:#fca5a5}
.module-tab .tab-count{font-size:.68rem;font-weight:800;padding:2px 7px;border-radius:999px;background:rgba(255,255,255,.06);color:var(--dim)}

/* Coverage notice (ECU Solutions only) */
.coverage-notice{margin:24px 0;padding:18px 22px;background:var(--surface);border:1px solid var(--border);border-left:3px solid #5dade2;border-radius:var(--radius)}
.coverage-notice p{font-size:.88rem;color:var(--muted);line-height:1.6;margin-bottom:12px}
.coverage-pills{display:flex;flex-wrap:wrap;gap:6px}
.sol-pill{font-size:.68rem;font-weight:700;padding:5px 10px;border-radius:6px;border:1px solid rgba(93,173,226,.22);color:#93c5fd;background:rgba(93,173,226,.06);letter-spacing:.04em;text-transform:uppercase}
.info-strip--dtc{border-color:rgba(34,197,94,.22);background:rgba(34,197,94,.04)}
.info-strip--dtc i{color:#22c55e}

/* App showcase */
.app-showcase{margin:32px 0;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:grid;grid-template-columns:1fr 1.4fr;gap:28px;align-items:center}
.app-showcase-text h2{font-size:1.2rem;font-weight:800;margin-bottom:10px;letter-spacing:-.02em}
.app-showcase-text p{font-size:.86rem;color:var(--muted);line-height:1.65;margin-bottom:14px}
.app-showcase-text ul{list-style:none;display:grid;gap:6px;font-size:.82rem;color:var(--muted)}
.app-showcase-text li{display:flex;align-items:center;gap:8px}
.app-showcase-text li i{color:var(--red);font-size:.7rem}
.app-showcase-img{border-radius:10px;border:1px solid var(--border);overflow:hidden;box-shadow:0 24px 48px -24px rgba(0,0,0,.8)}
.app-showcase-img img{width:100%;height:auto;display:block}

/* DTC panel */
.dtc-panel{margin:28px 0;padding:28px;background:linear-gradient(135deg,rgba(239,68,68,.05),transparent);border:1px solid rgba(239,68,68,.18);border-radius:var(--radius)}
.dtc-panel h2{font-size:1.15rem;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.dtc-panel h2 i{color:#ef4444}
.dtc-panel p{font-size:.88rem;color:var(--muted);line-height:1.65;max-width:720px}
.dtc-stats{display:flex;gap:24px;margin-top:18px}
.dtc-stats div strong{display:block;font-size:1.4rem;font-weight:800;color:#fff}
.dtc-stats div span{font-size:.68rem;color:var(--dim);text-transform:uppercase;letter-spacing:.08em}

@media(max-width:900px){
  .app-showcase{grid-template-columns:1fr}
  .app-showcase-img{order:-1}
}
.nav-links.mobile-open{display:flex!important;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--bg);padding:12px 24px;border-bottom:1px solid var(--border);z-index:201}
@media(max-width:640px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .toolbar{align-items:stretch}
  .result-count{margin-left:0;width:100%;text-align:center}
  .filter-group{justify-content:center}
  .module-tabs{justify-content:center}
}