/* SynTrends marketing landing — promotional surface only.
   Other pages keep /shared/style.css. */

@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600&family=Syne:wght@600;700;800&display=swap");

:root {
  --ink: #0a1210;
  --ink-2: #10201a;
  --fog: #c8d4cc;
  --fog-dim: #8a9a90;
  --signal: #3dcea0;
  --signal-deep: #1f8f6a;
  --line: rgba(200, 212, 204, 0.14);
  --paper: #e8f0ea;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.ad {
  margin: 0;
  font-family: "Sora", sans-serif;
  background: var(--ink);
  color: var(--fog);
  line-height: 1.55;
  overflow-x: hidden;
}

a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; }

.ad-nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  flex-wrap: wrap;
}

.ad-nav .mark {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  text-decoration: none;
}

.ad-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.15rem;
}

.ad-nav nav a {
  color: var(--fog-dim);
  font-size: 0.88rem;
  text-decoration: none;
}

.ad-nav nav a:hover { color: var(--paper); }

/* --- Hero: one composition --- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  padding: 6.5rem 1.5rem 3.5rem;
  isolation: isolate;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 90% 70% at 70% 20%, rgba(61, 206, 160, 0.22), transparent 55%),
    radial-gradient(ellipse 60% 50% at 15% 80%, rgba(31, 143, 106, 0.18), transparent 50%),
    linear-gradient(165deg, #07110e 0%, #0d1c16 45%, #0a1411 100%);
  overflow: hidden;
}

.hero-visual svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 40rem;
  animation: rise 0.9s ease-out both;
}

.hero-brand {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: clamp(3.2rem, 12vw, 6.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--paper);
  margin: 0 0 1.25rem;
  animation: rise 0.9s ease-out 0.08s both;
}

.hero-line {
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: clamp(1.35rem, 3.5vw, 2rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 0 0 0.85rem;
  max-width: 18ch;
}

.hero-sub {
  margin: 0 0 1.75rem;
  color: var(--fog-dim);
  font-size: 1.05rem;
  max-width: 34ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
}

.btn {
  display: inline-block;
  font-family: "Sora", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 1.35rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--signal);
  color: #062018;
}

.btn-primary:hover { background: #5fe0b4; color: #062018; }

.btn-ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  border-color: var(--fog-dim);
  color: var(--paper);
}

/* --- Sections: one job each --- */
.band {
  padding: 4.5rem 1.5rem;
  border-top: 1px solid var(--line);
}

.band-inner {
  max-width: 42rem;
  margin: 0 auto;
}

.band h2 {
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--paper);
  margin: 0 0 0.85rem;
  letter-spacing: -0.02em;
}

.band p {
  margin: 0;
  color: var(--fog-dim);
  font-size: 1.05rem;
  max-width: 36rem;
}

.band-signal {
  background:
    linear-gradient(180deg, rgba(61, 206, 160, 0.06), transparent 40%),
    var(--ink-2);
}

.feature-list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.feature-list li {
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  animation: rise 0.7s ease-out both;
}

.feature-list li:nth-child(1) { animation-delay: 0.05s; }
.feature-list li:nth-child(2) { animation-delay: 0.12s; }
.feature-list li:nth-child(3) { animation-delay: 0.19s; }
.feature-list li:nth-child(4) { animation-delay: 0.26s; }
.feature-list li:nth-child(5) { animation-delay: 0.33s; }

.feature-list strong {
  display: block;
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--paper);
  margin-bottom: 0.35rem;
}

.feature-list span {
  color: var(--fog-dim);
  font-size: 0.98rem;
}

.closing {
  text-align: left;
}

.closing .cta-row { margin-top: 1.5rem; }

.ad-foot {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  text-align: center;
  color: var(--fog-dim);
  font-size: 0.8rem;
}

.ad-foot a { color: var(--fog-dim); }
.ad-foot a:hover { color: var(--signal); }

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-2%, 1.5%, 0) scale(1.04); }
}

.hero-visual .mesh {
  animation: drift 18s ease-in-out alternate infinite;
  transform-origin: center;
}

@media (max-width: 640px) {
  .hero { align-items: end; padding-bottom: 2.5rem; }
  .ad-nav nav { gap: 0.65rem 0.9rem; }
}