:root {
  --bg: #222222;
  --bg-2: #2a2926;
  --panel: #34322e;
  --line: #3c3a35;
  --text: #e8e6e0;
  --muted: #9c978b;
  --teal: #1f9e55;        /* primary brand accent (sea green) */
  --teal-2: #e0b257;      /* softened honey gold for links / highlights */
  --green: #1f9e55;       /* sea green */
  --blue: #1f9e55;
  --grad: linear-gradient(135deg, #2bb265 0%, #1f9e55 58%, #d9a948 125%);
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(255, 179, 0, 0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(31, 158, 85, 0.22), transparent 62%),
    var(--bg);
}

a { color: var(--teal-2); text-decoration: none; }
a:hover { color: #ecc77a; }

h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; line-height: 1.15; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 1.2rem; }
h3 { font-size: 1.15rem; margin: 0 0 .5rem; }

p { color: #cfccc3; margin: 0 0 1rem; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1.4rem;
  background: rgba(34, 34, 34, 0.80);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); font-weight: 700; letter-spacing: .02em; }
.brand img { height: 28px; width: auto; }
.nav nav { display: flex; gap: 1.4rem; align-items: center; }
.nav nav a { color: var(--muted); font-size: .95rem; }
.nav nav a:hover { color: var(--text); }
.nav nav a.cta-sm {
  background: var(--grad); color: #1a1608; padding: .45rem .9rem; border-radius: 999px; font-weight: 600;
}
.nav nav a.cta-sm:hover { color: #1a1608; filter: brightness(1.08); }

/* hero */
.hero {
  padding: 6rem 1.4rem 5rem;
  text-align: center;
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-mark {
  height: 120px; margin-bottom: 1.75rem;
  filter: drop-shadow(0 12px 36px rgba(31, 158, 85, 0.40));
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: 1.15rem; color: var(--muted); margin: 1rem auto 2rem; max-width: 580px; }

.cta-row { display: flex; gap: .9rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: .8rem 1.4rem; border-radius: 999px;
  font-weight: 600; font-size: 1rem; transition: transform .15s ease, filter .15s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary {
  background: var(--grad); color: #1a1608;
  box-shadow: 0 8px 24px rgba(31, 158, 85, 0.28);
}
.btn.primary:hover { color: #1a1608; filter: brightness(1.08); }
.btn.ghost {
  background: transparent; color: var(--text); border-color: var(--line);
}
.btn.ghost:hover { border-color: var(--teal); color: var(--teal-2); }
.btn.big { padding: 1rem 2rem; font-size: 1.05rem; }

/* sections */
section { padding: 5rem 1.4rem; }
section > h2 { text-align: center; }

.features { text-align: center; }
.features > h2 { margin-bottom: .5rem; }
.features .sub { color: var(--muted); margin: 0 0 1.5rem; }
.features .grid {
  max-width: var(--maxw); margin: 0 auto 5rem;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
.features .video-frame { margin-top: 5rem; }
@media (max-width: 860px) {
  .features .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .features .grid { grid-template-columns: 1fr; }
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.card { padding: 1.5rem 1.3rem; }
.card h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.card p { font-size: .95rem; line-height: 1.5; }
.card:hover { border-color: var(--teal); transform: translateY(-2px); }
.card h3 { color: var(--teal-2); }
.card p { color: var(--muted); margin: 0; }

/* tile (clickable feature card) */
.tile {
  text-align: left;
  font: inherit; color: inherit;
  cursor: pointer;
  position: relative;
}
.tile:focus-visible { outline: 2px solid var(--teal-2); outline-offset: 3px; }
.tile.is-active {
  border-color: var(--teal);
  background:
    linear-gradient(180deg, rgba(31, 158, 85, 0.10), rgba(31, 158, 85, 0) 60%),
    var(--panel);
  box-shadow: 0 0 0 1px var(--teal) inset, 0 10px 30px rgba(31, 158, 85, 0.18);
}
.tile.is-active h3 { color: #ecc77a; }

.video-frame {
  max-width: 900px; margin: 0 auto;
  aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  background: #000;
}
.video-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

/* about */
.about-inner { max-width: 720px; margin: 0 auto; }
.about p { color: #cfccc3; }
.about em { color: var(--teal-2); font-style: normal; }

/* faq */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin: .7rem 0;
}
.faq details[open] { border-color: var(--teal); }
.faq summary {
  cursor: pointer; font-weight: 600; color: var(--text);
  list-style: none; position: relative; padding-right: 1.5rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 0;
  color: var(--teal-2); font-size: 1.3rem; line-height: 1;
  transition: transform .2s ease;
}
.faq details[open] summary::after { content: "−"; }
.faq p { margin: .8rem 0 0; color: var(--muted); }

/* cta band */
.cta-band {
  text-align: center;
  padding: 5rem 1.4rem;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(31, 158, 85, 0.14), transparent 70%),
    var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cta-band h2 { margin-bottom: 1.5rem; }

/* footer */
footer { padding: 2.5rem 1.4rem; }
.foot-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; gap: 1rem;
}
.foot-inner img { height: 36px; }
.foot-inner p { margin: 0; font-size: .9rem; color: var(--muted); }
.foot-inner .muted { font-size: .85rem; }

@media (max-width: 640px) {
  .nav nav { gap: .9rem; }
  .nav nav a:not(.cta-sm) { display: none; }
  section { padding: 3.5rem 1.2rem; }
  .hero { padding: 3.5rem 1.2rem 3rem; }
}