/* ============================================================
   ADAWireless — 元群科技 產品網站
   Design system extracted from the hi-fi handoff prototype.
   Tokens, components, hover states, and responsive rules.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  /* text */
  --ink:#0f172a;
  --body:#475467;
  --muted:#667085;
  --faint:#94a3b8;
  --ink-soft:#344054;
  /* borders */
  --border:#e4e7ec;
  --border-soft:#eef0f3;
  --border-form:#d0d5dd;
  --line:#f4f5f7;
  /* backgrounds */
  --bg:#fff;
  --bg-soft:#f8fafc;
  --bg-dark:#0f172a;
  /* brand accent (kept from the approved hi-fi design) */
  --brand:oklch(0.55 0.15 250);
  --brand-hover:oklch(0.45 0.15 250);
  --brand-on-dark:#60a5fa;
  --signal:#34e0c6; /* hero-only accent, pulled from the render's positioning-signal glow */
  --brand-tint:oklch(0.97 0.03 250);
  --chip-text:oklch(0.45 0.12 250);
  --accent-bg:oklch(0.98 0.02 250);
  --accent-border:oklch(0.9 0.05 250);
  --sel:oklch(0.9 0.06 250);
  /* effects */
  --shadow-float:0 14px 28px -16px rgba(16,24,40,0.35);
  --shadow-hover:0 18px 40px -22px rgba(16,24,40,0.45);
  --maxw:1200px;
  --pad:32px;
}

/* ---------- Reset ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  font-family:'Noto Sans TC',sans-serif;
  -webkit-font-smoothing:antialiased;
  color:var(--ink);
  line-height:1.5;
  overflow-x:clip; /* guard against accidental sideways scroll; 'clip' (not 'hidden') keeps position:sticky working */
}
img,svg{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hover)}
::selection{background:var(--sel)}
.mono{font-family:'IBM Plex Mono',monospace}

/* ---------- Layout ---------- */
.page{min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.container--arch{max-width:1000px}
.container--contact{max-width:1080px}
.section{padding:88px 0}
.section--tight{padding:48px 0}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.section--dark{background:var(--bg-dark);color:#fff}
.section-head{padding-top:64px}

/* ---------- Typography ---------- */
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;letter-spacing:0.18em;
  color:var(--brand);font-weight:600;text-transform:uppercase;display:block;
}
.eyebrow--dark{color:var(--brand-on-dark)}
h1,h2{letter-spacing:-0.01em;font-weight:900;text-wrap:balance}
.page-title{font-size:clamp(34px,6vw,44px);line-height:1.14;margin-top:14px}
.section-title{font-size:clamp(28px,4.5vw,38px);line-height:1.18;margin-top:14px}
.section-title--sm{font-size:clamp(26px,4vw,36px)}
.lead{font-size:17px;line-height:1.8;color:var(--body);max-width:780px;margin-top:16px;text-wrap:pretty}
.lead--narrow{max-width:640px}
.text-brand{color:var(--brand)}
.text-brand-d{color:var(--brand-on-dark)}
.center{text-align:center}
.mt-sm{margin-top:14px}

/* ---------- Buttons & links ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 30px;border-radius:8px;font-size:15px;font-weight:700;
  cursor:pointer;border:1px solid transparent;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff}
.btn--primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn--secondary{background:#fff;color:var(--ink);border-color:var(--border-form);font-weight:600}
.btn--secondary:hover{color:var(--ink);border-color:var(--brand);transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--ink);padding:15px 34px;border-radius:9px;font-size:16px}
.btn--light:hover{color:var(--ink);transform:translateY(-1px);box-shadow:0 18px 40px -18px rgba(0,0,0,0.5)}
.btn--block{width:100%}
.link-arrow{font-weight:700;font-size:15px;color:var(--brand);cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.link-arrow:hover .arrow{transform:translateX(3px)}
.link-arrow--dark{color:var(--brand-on-dark)}
.link-arrow--dark:hover{color:var(--brand-on-dark)}
.arrow{transition:transform .15s ease;display:inline-block}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,0.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-soft);
}
.nav-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px var(--pad);gap:16px}
.brand{display:flex;align-items:center;gap:12px;cursor:pointer}
.brand__mark{width:38px;height:38px;flex-shrink:0}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__name{font-weight:900;font-size:16px;color:var(--ink)}
.brand__tag{font-family:'IBM Plex Mono',monospace;font-size:9px;letter-spacing:0.14em;color:var(--faint)}
.nav{display:flex;gap:28px;align-items:center;font-size:15px;color:var(--body);font-weight:500}
.nav__link{color:var(--body);cursor:pointer;padding:4px 0;position:relative}
.nav__link:hover{color:var(--brand)}
.nav__link[aria-current="page"]{color:var(--ink);font-weight:700}
.nav__cta{padding:9px 20px;background:var(--brand);color:#fff;border-radius:7px;font-weight:700}
.nav__cta:hover{background:var(--brand-hover);color:#fff}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink)}
.nav-toggle svg{width:24px;height:24px}

/* ---------- Hero ---------- */
/* hero: centered, slightly wider than the 1200 content grid so the scene image reads a touch larger */
.hero-container{max-width:1240px;margin:0 auto;padding:0 var(--pad)}
.hero{border:1px solid var(--border);border-top:none;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:480px 1fr}
.hero__copy{padding:64px 44px;display:flex;flex-direction:column;justify-content:center;gap:26px}
.hero__title{font-size:clamp(36px,5.2vw,54px);line-height:1.14}
.hero__lead{font-size:17px;line-height:1.8;color:var(--body);max-width:460px;text-wrap:pretty}
.hero__actions{display:flex;gap:14px;margin-top:6px;flex-wrap:wrap}
.hero__media{
  position:relative;border-left:1px solid var(--border-soft);min-height:560px;overflow:hidden;
  background:
    radial-gradient(120% 78% at 60% 44%, rgba(52,224,198,0.15), transparent 62%),
    linear-gradient(150deg, #1b2942 0%, #0a1226 72%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,0.05);
}
.hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:6px 8px 44px}
.stat-cards{position:absolute;right:28px;left:auto;bottom:64px;top:auto;display:flex;gap:12px;z-index:2}

/* telemetry status bar — the hero signature */
.hero__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  display:flex;align-items:center;gap:9px;padding:14px 22px;
  font-size:11px;letter-spacing:0.06em;color:rgba(255,255,255,0.66);
  background:linear-gradient(0deg, rgba(6,12,24,0.78), transparent);
  border-top:1px solid rgba(255,255,255,0.07);
}
.signal-dot{
  width:8px;height:8px;border-radius:50%;background:var(--signal);flex-shrink:0;
  box-shadow:0 0 0 0 rgba(52,224,198,0.5);animation:signal 2.6s ease-out infinite;
}
@keyframes signal{
  0%{box-shadow:0 0 0 0 rgba(52,224,198,0.5)}
  70%{box-shadow:0 0 0 9px rgba(52,224,198,0)}
  100%{box-shadow:0 0 0 0 rgba(52,224,198,0)}
}
@media (prefers-reduced-motion:reduce){.signal-dot{animation:none}}

/* framed product/UI screenshot shown at natural aspect ratio */
.shot{display:block;width:100%;height:auto;border:1px solid var(--border);border-radius:16px}
.shot--flat{border-radius:0}
/* frosted-glass chips floating over the dark hero scene */
.stat-card{
  background:rgba(255,255,255,0.08);
  backdrop-filter:blur(12px) saturate(1.1);-webkit-backdrop-filter:blur(12px) saturate(1.1);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:14px;padding:13px 18px;
  box-shadow:0 10px 30px -14px rgba(0,0,0,0.6);
}
.stat-card__label{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.08em;color:rgba(255,255,255,0.62)}
.stat-card__value{font-weight:900;font-size:22px;color:#fff;margin-top:3px;letter-spacing:-0.01em}
.stat-card__value small{font-size:14px;color:var(--brand-on-dark);margin-left:1px}

/* feature strip under hero */
.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border-soft)}
.feature{padding:22px 30px;border-right:1px solid var(--border-soft)}
.feature:last-child{border-right:none}
.feature__k{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--faint);letter-spacing:0.1em}
.feature__v{font-weight:700;font-size:15px;margin-top:4px}

/* ---------- Grids ---------- */
.grid{display:grid;gap:20px;margin-top:44px}
.grid--2{grid-template-columns:repeat(2,1fr);gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--5{grid-template-columns:repeat(5,1fr);gap:16px}

/* ---------- Generic card ---------- */
.card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:28px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--accent-border)}
.card__title{font-weight:800;font-size:18px}
.card__text{font-size:14px;line-height:1.7;color:var(--muted);margin-top:10px}
.card--soft{background:var(--bg-soft)}
.card--plain:hover{transform:none;box-shadow:none;border-color:var(--border)}

/* stat-style advantage card (solution page) */
.stat-tile{border:1px solid var(--border);border-radius:16px;padding:30px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.stat-tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--accent-border)}
.stat-tile__big{font-weight:900;font-size:24px;color:var(--brand)}
.stat-tile__title{font-weight:800;font-size:17px;margin-top:8px}
.stat-tile__text{font-size:14px;line-height:1.7;color:var(--muted);margin-top:8px}

/* ---------- Placeholder media ---------- */
.ph{
  background:repeating-linear-gradient(135deg,#f1f5f9,#f1f5f9 11px,#e9eef4 11px,#e9eef4 22px);
  border:1px solid var(--border);border-radius:16px;
  display:flex;align-items:center;justify-content:center;text-align:center;
}
.ph__label{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--faint);line-height:1.9;padding:20px}
.ph--dark{background:repeating-linear-gradient(135deg,rgba(255,255,255,0.05),rgba(255,255,255,0.05) 8px,rgba(255,255,255,0.02) 8px,rgba(255,255,255,0.02) 16px);border-color:rgba(255,255,255,0.1)}
.ph--dark .ph__label{color:#64748b}
.ratio-16-10{aspect-ratio:16/10}
.ratio-21-9{aspect-ratio:21/9}
.ratio-1{aspect-ratio:1}

/* ---------- Numbered advantage cards (home) ---------- */
.adv{border:1px solid var(--border);border-radius:16px;padding:38px;display:flex;gap:24px;align-items:flex-start;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.adv:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--accent-border)}
.adv__num{flex-shrink:0;width:56px;height:56px;border-radius:14px;background:var(--brand-tint);display:flex;align-items:center;justify-content:center}
.adv__num span{font-family:'IBM Plex Mono',monospace;font-weight:600;color:var(--brand);font-size:13px}
.adv__title{font-weight:900;font-size:22px}
.adv__text{font-size:15px;line-height:1.8;color:var(--body);margin-top:10px}

/* ---------- Hardware preview (dark) ---------- */
.hw-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:20px}
.hw-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.1);border-radius:14px;padding:24px 20px;transition:transform .15s ease,background .15s ease}
.hw-card:hover{transform:translateY(-2px);background:rgba(255,255,255,0.07)}
.hw-card__thumb{border-radius:10px;margin-bottom:16px}
.hw-card__thumb .ph__label{color:#64748b;font-size:10px}
.hw-card__thumb--img{background:#fff;aspect-ratio:1;display:flex;align-items:center;justify-content:center;padding:16px}
.hw-card__thumb--img img{max-width:100%;max-height:100%;object-fit:contain}
.hw-card__name{font-weight:800;font-size:15px;color:#fff}
.hw-card__meta{font-family:'IBM Plex Mono',monospace;font-size:11px;color:#64748b;margin-top:6px}

/* ---------- Dark function cards (platform) ---------- */
.func-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.1);border-radius:14px;padding:26px;transition:transform .15s ease,background .15s ease}
.func-card:hover{transform:translateY(-2px);background:rgba(255,255,255,0.07)}
.func-card__title{font-weight:800;font-size:16px;color:#fff}
.func-card__text{font-size:13px;line-height:1.7;color:var(--faint);margin-top:8px}

/* ---------- Platform preview split ---------- */
.split{display:grid;grid-template-columns:0.9fr 1.1fr;gap:56px;align-items:center}
.checklist{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-soft);list-style:none}
.checklist .tick{color:var(--brand);font-weight:900;flex-shrink:0}

/* ---------- Products page ---------- */
.product{border:1px solid var(--border);border-radius:18px;overflow:hidden;display:grid;grid-template-columns:0.85fr 1.15fr}
.product--reverse{grid-template-columns:1.15fr 0.85fr}
.product__media{min-height:360px;border-right:1px solid var(--border-soft);background:#fff;display:flex;align-items:center;justify-content:center;padding:32px}
.product--reverse .product__media{border-right:none;border-left:1px solid var(--border-soft)}
.product__media.ph{border-radius:0;border-top:none;border-bottom:none;padding:0}
.product__media img{max-width:100%;max-height:320px;width:auto;height:auto;object-fit:contain}
.product__media img.screenshot{box-shadow:0 8px 24px rgba(16,24,40,0.08);border:1px solid var(--border);border-radius:10px}
.product__body{padding:40px}
.product__head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.product__kicker{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--brand);letter-spacing:0.12em}
.product__model{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--faint)}
.product__title{font-size:28px;font-weight:900;margin-top:10px}
.product__text{font-size:15px;line-height:1.8;color:var(--body);margin-top:12px}

.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{background:var(--brand-tint);color:var(--chip-text);font-weight:600;font-size:13px;padding:7px 14px;border-radius:8px}

.spec{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin-top:24px;border-top:1px solid var(--border-soft);padding-top:20px}
.spec__row{padding:8px 0;border-bottom:1px solid var(--line)}
.spec__row--last{border-bottom:none}
.spec__label{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--faint)}
.spec__val{font-size:13px;color:var(--ink-soft);margin-top:2px}

/* ---------- Solution: relay bar ---------- */
.relay{margin-top:24px;background:var(--bg-dark);border-radius:16px;padding:36px;display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}
.relay__node{color:#fff;font-weight:800;font-size:18px}
.relay__link{color:var(--brand-on-dark);font-weight:900;font-size:22px}
.relay__note{font-family:'IBM Plex Mono',monospace;color:#64748b;font-size:13px;width:100%;text-align:center;margin-top:8px}

/* positioning-mode / phase cards */
.mode-card{border:1px solid var(--border);border-radius:16px;padding:30px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.mode-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--accent-border)}
.mode-card--accent{border-color:var(--accent-border);background:var(--accent-bg)}
.mode-card__k{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--faint);letter-spacing:0.1em}
.mode-card--accent .mode-card__k{color:var(--brand)}
.mode-card__title{font-weight:900;font-size:19px;margin-top:8px}
.mode-card__where{font-size:13px;color:var(--brand);font-weight:600;margin-top:4px}
.mode-card__text{font-size:14px;line-height:1.7;color:var(--muted);margin-top:12px}

.phase-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:32px;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}
.phase-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--accent-border)}
.phase-card__k{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--brand);font-weight:600}
.phase-card__title{font-weight:900;font-size:20px;margin-top:12px}
.phase-card__sub{color:var(--brand);font-weight:700;font-size:15px;margin-top:6px}
.phase-card__list{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.phase-card__list span{font-size:14px;color:var(--body);line-height:1.6}

/* ---------- Architecture layers ---------- */
.arch-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:48px;align-items:start;margin-top:40px}
@media (max-width:960px){
  .arch-grid{grid-template-columns:1fr;gap:32px}
}
/* the stack as a connected spine — data rises from 感知(01) up to 應用(05) */
.layers{position:relative;display:flex;flex-direction:column;gap:26px;padding-top:22px}
.layers::before{content:"";position:absolute;left:22px;top:59px;bottom:37px;width:2px;border-radius:2px;
  background:linear-gradient(to top, var(--brand) 0%, var(--brand) 34%, var(--signal) 100%);z-index:0}
.layers::after{content:"";position:absolute;left:17px;top:23px;width:0;height:0;z-index:1;
  border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:9px solid var(--signal)}
.layer{position:relative;display:grid;grid-template-columns:46px 1fr;column-gap:20px;align-items:center;padding:14px 0}
.layer__num{position:relative;z-index:1;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 4px var(--bg);transition:box-shadow .15s ease}
.layer:hover .layer__num{box-shadow:0 0 0 4px var(--bg),0 0 0 6px var(--accent-border)}
.layer__num span{font-family:'IBM Plex Mono',monospace;color:#fff;font-weight:600;font-size:14px}
.layer__card{flex:1;border:none;border-radius:0;padding:0;display:block}
.layer__head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:6px 16px}
.layer__title{font-weight:900;font-size:18px}
.layer__tag{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--brand);white-space:nowrap}
.layer__sub{color:var(--muted);font-size:13px;margin-top:4px}
.layer-arrow{display:none}
/* layer node lightness ramps 01 -> 05 */
.layer-1 .layer__num{background:oklch(0.55 0.15 250)}
.layer-2 .layer__num{background:oklch(0.58 0.14 250)}
.layer-3 .layer__num{background:oklch(0.61 0.13 250)}
.layer-4 .layer__num{background:oklch(0.64 0.12 250)}
.layer-5 .layer__num{background:oklch(0.67 0.11 250)}

.deploy-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:40px;align-items:center;margin-top:40px}
.deploy-grid__aside{display:flex;flex-direction:column;gap:16px}
.mini-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}
.mini-card__k{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--brand);letter-spacing:0.1em}
.mini-card__title{font-weight:800;font-size:16px;margin-top:6px}
.mini-card__text{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- CTA band ---------- */
.cta{background:var(--bg-dark);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 120%,rgba(59,130,246,0.22),transparent 60%)}
.cta__inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:80px var(--pad);display:flex;flex-direction:column;align-items:center;text-align:center;gap:24px}
.cta__eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.2em;color:var(--brand-on-dark);font-weight:500}
.cta__title{font-size:clamp(30px,4.6vw,40px);font-weight:900;color:#fff;letter-spacing:-0.01em;max-width:760px;line-height:1.2;text-wrap:pretty}
.cta__text{font-size:16px;line-height:1.8;color:var(--faint);max-width:600px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;margin-top:48px}
.form-card{border:1px solid var(--border);border-radius:18px;padding:36px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px;margin-top:0}
.field--full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--ink-soft)}
.field .req{color:var(--brand)}
.field input,.field textarea{
  border:1px solid var(--border-form);border-radius:8px;padding:12px 14px;
  font-size:14px;color:var(--ink);font-family:inherit;width:100%;background:#fff;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-tint)}
.field textarea{min-height:120px;resize:vertical}
.form-note{font-size:12px;color:var(--faint);margin-top:14px}
.info-stack{display:flex;flex-direction:column;gap:20px}
.info-card{border:1px solid var(--border);border-radius:16px;padding:28px}
.info-card__k{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--faint);letter-spacing:0.1em}
.info-card__title{font-weight:900;font-size:19px;margin-top:8px}
.info-card__sub{color:var(--muted);font-size:14px;margin-top:4px}
.info-card a{font-weight:600}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-dark);color:var(--faint)}
.footer-grid{max-width:var(--maxw);margin:0 auto;padding:56px var(--pad);display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand__row{display:flex;align-items:center;gap:12px}
.footer-brand__mark{width:30px;height:30px}
.footer-brand__name{font-weight:900;font-size:16px;color:#fff}
.footer-brand__text{font-size:13px;line-height:1.8;margin-top:16px;max-width:280px}
.footer-col__title{color:#fff;font-weight:700;font-size:14px;margin-bottom:14px}
.footer-col__links{display:flex;flex-direction:column;gap:10px;font-size:13px}
.footer-col__links a{color:var(--faint)}
.footer-col__links a:hover{color:#fff}
.footer-col__links span{color:var(--faint)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08)}
.footer-bottom__inner{max-width:var(--maxw);margin:0 auto;padding:20px var(--pad);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer-bottom__inner span{font-family:'IBM Plex Mono',monospace;font-size:12px;color:#64748b}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr}
  .hero__copy{padding:56px 32px}
  .hero__media{min-height:420px;border-left:none;border-top:1px solid var(--border-soft)}
  .split{grid-template-columns:1fr;gap:32px}
  .grid--5{grid-template-columns:repeat(3,1fr)}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .product,.product--reverse{grid-template-columns:1fr}
  .product__media{min-height:220px;border-right:none;border-bottom:1px solid var(--border-soft)}
  .product--reverse .product__media{border-left:none;border-bottom:1px solid var(--border-soft);order:-1}
  .contact-grid{grid-template-columns:1fr}
  .deploy-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
}
@media (max-width:860px){
  .nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--border-soft);
    padding:8px var(--pad) 20px;
    box-shadow:0 20px 30px -24px rgba(16,24,40,0.4);
    display:none;
  }
  .nav.is-open{display:flex}
  .nav__link{padding:14px 0;border-bottom:1px solid var(--border-soft)}
  .nav__cta{margin-top:14px;text-align:center;padding:13px 20px}
  .nav-toggle{display:inline-flex}
  .site-header{position:sticky}
}
@media (max-width:640px){
  :root{--pad:20px}
  .grid--3,.grid--4,.grid--5{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
  .feature-strip{grid-template-columns:1fr 1fr}
  .feature:nth-child(2){border-right:none}
  .spec{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .hero__copy{padding:44px 24px}
  .product__body{padding:28px}
  .adv{padding:28px}
  .footer-grid{grid-template-columns:1fr}
  .stat-cards{right:16px;left:auto;bottom:56px;top:auto}
}
@media (max-width:400px){
  .feature-strip{grid-template-columns:1fr}
  .feature{border-right:none}
}