/* SILOCK marketing site — si-lock.com */
:root {
  --void: #000000;
  --base: #030809;
  --panel: #0d1216;
  --ice: #eefaf6;
  --dim: #8a9aa2;
  --faint: #5a6a72;
  --jade: #2fd8a8;
  --jade-bright: #5eead4;
  --chrome: #c8d0d6;
  --line: rgba(47, 216, 168, 0.18);
  --glow: rgba(47, 216, 168, 0.22);
  --sans: Inter, system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--ice);
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 450;
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.18;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.35'/></svg>");
}
.ambient {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 50% 35% at 50% -10%, rgba(47, 216, 168, 0.12), transparent 55%),
    radial-gradient(ellipse 30% 25% at 100% 40%, rgba(31, 143, 224, 0.06), transparent 50%);
}

.top {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 20px;
  padding: 14px 28px;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(47, 216, 168, 0.12);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 650; letter-spacing: 0.12em; font-size: 13px;
}
.brand img { border-radius: 10px; }
.brand .o { color: var(--jade); }
.nav {
  display: flex; gap: 18px; margin-left: auto;
  font-size: 13px; color: var(--dim);
}
.nav a:hover { color: var(--ice); }
.cta-sm {
  font-size: 12px; font-weight: 600; letter-spacing: 0.06em;
  padding: 8px 14px; border-radius: 999px;
  border: 1px solid rgba(47, 216, 168, 0.4);
  color: var(--jade-bright);
}
.cta-sm:hover { background: rgba(47, 216, 168, 0.1); }

main { position: relative; z-index: 1; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  min-height: min(88vh, 860px);
  padding: 64px 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
.hero-bg img {
  width: 100%; height: 100%; object-fit: cover; opacity: 0.35;
  filter: saturate(1.05) brightness(0.55);
}
.hero-veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.75) 100%),
    linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.9) 100%);
}
.hero-copy, .hero-mark { position: relative; z-index: 1; }
.eyebrow {
  font-family: var(--mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--jade);
  margin: 0 0 16px;
}
h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 650; letter-spacing: -0.03em; line-height: 1.08;
  margin: 0 0 18px;
}
.grad {
  background: linear-gradient(120deg, var(--jade-bright), var(--jade), #1f8fe0);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.lede {
  color: var(--dim); font-size: 1.05rem; max-width: 34rem;
  margin: 0 0 28px;
}
.lede.narrow { max-width: 32rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 12px; font-weight: 650;
  letter-spacing: 0.04em;
  background: linear-gradient(180deg, var(--jade-bright), var(--jade));
  color: #04120e;
  box-shadow: 0 0 28px var(--glow);
  border: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 40px rgba(47,216,168,0.35); }
.btn-ghost {
  display: inline-flex; align-items: center;
  padding: 12px 20px; border-radius: 12px; font-weight: 550;
  border: 1px solid rgba(238, 250, 246, 0.14);
  color: var(--ice);
}
.btn-ghost:hover { border-color: rgba(47, 216, 168, 0.4); color: var(--jade-bright); }
.claims {
  display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0;
}
.claims li {
  font-size: 12px; color: var(--chrome);
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid rgba(47, 216, 168, 0.22);
  background: rgba(13, 18, 22, 0.6);
}
.hero-mark img {
  margin-left: auto;
  width: min(100%, 520px);
  filter: drop-shadow(0 20px 60px rgba(0,0,0,0.65));
}

.section {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
}
.section-dark {
  max-width: none;
  background: linear-gradient(180deg, transparent, rgba(13, 18, 22, 0.9), transparent);
  padding-left: max(40px, calc((100% - 1100px) / 2 + 40px));
  padding-right: max(40px, calc((100% - 1100px) / 2 + 40px));
}
.section-head { margin-bottom: 36px; }
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 650; letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  padding: 22px;
  border-radius: 18px;
  background: rgba(13, 18, 22, 0.85);
  border: 1px solid var(--line);
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.card-icon {
  width: 48px; height: 48px; border-radius: 12px; margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--dim); font-size: 0.95rem; }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 1100px;
}
.stack-item {
  display: flex; flex-direction: column; gap: 6px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(238, 250, 246, 0.06);
  background: rgba(0, 0, 0, 0.35);
}
.stack-item .k {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--faint);
}
.stack-item .v { color: var(--ice); font-size: 0.95rem; }

.split {
  display: grid; grid-template-columns: 1.2fr 0.8fr;
  gap: 40px; align-items: center;
}
.music-visual {
  display: grid; place-items: center;
  min-height: 240px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 40%, rgba(47, 216, 168, 0.15), transparent 55%),
    rgba(13, 18, 22, 0.8);
}
.music-visual img {
  width: 160px; height: 160px;
  filter: drop-shadow(0 12px 40px rgba(47, 216, 168, 0.25));
}

.access { padding-bottom: 100px; }
.access-card {
  text-align: center;
  padding: 48px 32px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(47, 216, 168, 0.1), transparent 60%),
    rgba(13, 18, 22, 0.9);
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}
.access-logo {
  width: min(360px, 80%);
  margin: 0 auto 20px;
}
.access-card h2 { margin-bottom: 10px; }
.access-card p {
  color: var(--dim); max-width: 28rem; margin: 0 auto 24px;
}
.access-card .hero-actions { justify-content: center; }

.foot {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
  padding: 28px 40px 40px;
  border-top: 1px solid rgba(47, 216, 168, 0.1);
  max-width: 1100px; margin: 0 auto;
  color: var(--faint); font-size: 13px;
}
.foot-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; letter-spacing: 0.12em; color: var(--chrome);
}
.foot-brand img { border-radius: 8px; }
.foot-copy { margin: 0; flex: 1; }
.foot-links { display: flex; gap: 16px; }
.foot-links a:hover { color: var(--jade); }

@media (max-width: 900px) {
  .nav { display: none; }
  .hero { grid-template-columns: 1fr; padding: 40px 22px 56px; min-height: auto; }
  .hero-mark { order: -1; }
  .hero-mark img { margin: 0 auto; width: min(100%, 360px); }
  .cards, .stack-grid, .split { grid-template-columns: 1fr; }
  .section { padding: 56px 22px; }
  .top { padding: 12px 16px; }
}