/* Shared styling for the product sub-pages (Silf, Quick BRT). True-black OLED,
   themed per product via body[data-accent]. Standalone (does not need hub.css).
   No em dashes anywhere. */
@font-face {
  font-family: "Cinzel";
  src: url("../assets/fonts/Cinzel.ttf") format("truetype");
  font-weight: 400 700; font-style: normal; font-display: swap;
}

:root {
  --black: #000000;
  --surface-0: #060608;
  --surface-1: #0b0b0f;
  --surface-2: #121218;
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);
  --ink: #f3f3f7;
  --ink-soft: #c7c7d2;
  --muted: #9595a6;
  --gold: #f0c75e;
  --accent: var(--gold);
  --accent-btn: linear-gradient(180deg, #f6dc8f, #f0c75e 55%, #a88a3c);
  --accent-ink: #1a1404;
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Cinzel", Georgia, serif;
  --maxw: 980px;
  --radius: 16px;
}
body[data-accent="violet"] { --accent: #9a6bf2; --accent-btn: linear-gradient(180deg, #a78bfa, #7c4dff 55%, #6d28d9); --accent-ink: #ffffff; }
body[data-accent="cyan"]   { --accent: #38e0d6; --accent-btn: linear-gradient(180deg, #7af0e6, #38e0d6 55%, #18a8bd); --accent-ink: #04201f; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--black);
  color: var(--ink-soft);
  font-family: var(--font-ui);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }
h1, h2, h3 { color: var(--ink); line-height: 1.18; margin: 0 0 .5em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* topbar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(0, 0, 0, .72);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar .row { max-width: var(--maxw); margin: 0 auto; padding: 12px 22px; display: flex; align-items: center; gap: 14px; }
.back { color: var(--muted); font-size: .9rem; font-weight: 600; }
.back:hover { color: var(--accent); text-decoration: none; }
.back::before { content: "\2039\00a0"; }
.topbar .pmark { margin-left: auto; display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 700; letter-spacing: .01em; }
.topbar .pmark img { width: 24px; height: 24px; }

/* badges + buttons */
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .74rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.badge .pip { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 700; font-size: .96rem; padding: 12px 22px; border-radius: 12px;
  border: 1px solid transparent; cursor: pointer; font-family: var(--font-ui);
  transition: transform .12s ease, box-shadow .14s ease, background .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn:hover { text-decoration: none; }
.btn-primary { color: var(--accent-ink); background: var(--accent-btn); box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 32%, transparent); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px color-mix(in srgb, var(--accent) 44%, transparent); }
.btn-ghost { color: var(--ink); background: rgba(255, 255, 255, .04); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }

/* hero */
.phero {
  position: relative;
  padding: clamp(48px, 9vh, 96px) 0 56px;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
  background: radial-gradient(680px 360px at 50% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%);
}
.phero .glyph {
  width: 92px; height: 92px; margin: 0 auto 22px;
  border-radius: 24%;
  background: color-mix(in srgb, var(--accent) 14%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line));
  display: grid; place-items: center;
  box-shadow: 0 16px 44px color-mix(in srgb, var(--accent) 28%, transparent);
}
.phero .glyph img { width: 58px; height: 58px; }
.phero h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 7vw, 3.6rem); margin: 16px 0 8px; }
.phero .tagline { color: var(--accent); font-weight: 600; font-size: 1.16rem; margin: 0 auto 18px; }
.phero .blurb { max-width: 660px; margin: 0 auto; color: var(--ink-soft); font-size: 1.1rem; }
.phero .cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

/* sections */
section { padding: 64px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.eyebrow { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .26em; font-size: .72rem; font-weight: 700; color: var(--accent); margin: 0 0 12px; }
.section-head h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
.section-head p { color: var(--muted); }

/* feature grid */
.fgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.fcard {
  background: linear-gradient(180deg, var(--surface-1), var(--surface-0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.fcard:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); box-shadow: 0 16px 40px color-mix(in srgb, var(--accent) 16%, transparent); }
.fcard .fi { font-size: 1.7rem; line-height: 1; margin-bottom: 12px; }
.fcard h3 { font-size: 1.12rem; margin-bottom: 6px; }
.fcard p { margin: 0; font-size: .96rem; color: var(--muted); }

/* spec strip */
.specs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 36px; }
.spec { background: var(--surface-1); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; font-size: .9rem; color: var(--ink-soft); }
.spec b { color: var(--accent); }

/* notify card */
.notify { max-width: 560px; margin: 0 auto; }
.notify .card {
  background: radial-gradient(420px 220px at 80% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent), linear-gradient(180deg, var(--surface-1), var(--surface-0));
  border: 1px solid color-mix(in srgb, var(--accent) 26%, var(--line));
  border-radius: 20px; padding: 32px;
}
.notify h2 { text-align: center; }
.notify p.sub { text-align: center; color: var(--muted); margin-top: -2px; }
.notify form { margin-top: 22px; }
.notify .field { margin-bottom: 14px; }
.notify label { display: block; font-size: .86rem; color: var(--ink); margin-bottom: 6px; font-weight: 600; }
.notify input, .notify textarea {
  width: 100%; font-family: var(--font-ui); font-size: 1rem; color: var(--ink);
  background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
}
.notify input:focus, .notify textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.notify textarea { resize: vertical; min-height: 84px; }
.notify .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.notify .btn { width: 100%; justify-content: center; }
.form-status { margin: 12px 0 0; min-height: 1.3em; font-size: .96rem; text-align: center; }
.form-status.ok { color: #5fcf80; }
.form-status.err { color: #ff8a8a; }

/* footer */
.pfoot { border-top: 1px solid var(--line-soft); padding: 36px 0; color: var(--muted); font-size: .86rem; }
.pfoot .row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.pfoot a { color: var(--muted); }
.pfoot a:hover { color: var(--ink); }

@media (max-width: 820px) { .fgrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .fgrid { grid-template-columns: 1fr; } section { padding: 48px 0; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } html { scroll-behavior: auto; } }