:root {
  --bg: #111512;
  --ink: #f2ecdf;
  --muted: #b5aea0;
  --panel: rgba(23, 28, 24, 0.88);
  --panel-strong: #171d19;
  --line: rgba(242, 236, 223, 0.1);
  --moss: #6f8c62;
  --teal: #2d8578;
  --copper: #c46f42;
  --gold: #d5b56b;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --maxw: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(196, 111, 66, 0.16), transparent 26%),
    radial-gradient(circle at top right, rgba(45, 133, 120, 0.18), transparent 28%),
    linear-gradient(180deg, #121612 0%, #191f1a 48%, #121613 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  min-height: 100vh;
  position: relative;
}

.page-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(242, 236, 223, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 236, 223, 0.025) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
}

.topbar,
main {
  width: min(calc(100% - 2rem), var(--maxw));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0 0.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--copper), var(--teal));
  box-shadow: 0 0 0 7px rgba(196, 111, 66, 0.14);
}

.topnav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.topnav a {
  font-size: 0.95rem;
  color: var(--muted);
}

.topnav a:hover,
.brand:hover {
  color: var(--gold);
}

main {
  padding: 0.9rem 0 3.2rem;
}

.hero {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 30px;
  padding: 1.2rem 1.4rem;
}

.section-kicker {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 0.9rem;
}

.hero h1,
.section-heading h2 {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.04em;
  line-height: 0.94;
  margin: 0;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  max-width: 10ch;
}

.lede {
  max-width: 40ch;
  font-size: 1rem;
  color: var(--muted);
  margin: 0.55rem 0 0;
}

.section-heading p,
.app-card p,
.meta {
  color: var(--muted);
}

.category {
  margin-top: 0.9rem;
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 30px;
  padding: 1.25rem;
}

.solar {
  background:
    radial-gradient(circle at top right, rgba(212, 181, 107, 0.12), transparent 28%),
    radial-gradient(circle at bottom left, rgba(196, 111, 66, 0.1), transparent 24%),
    var(--panel);
}

.section-heading {
  margin-bottom: 0.9rem;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
}

.section-heading p {
  max-width: 56ch;
  margin: 0.8rem 0 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.app-card {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: 1.15rem;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(27, 33, 29, 0.95), rgba(21, 26, 23, 0.95));
  border: 1px solid rgba(242, 236, 223, 0.08);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.24);
  border-color: rgba(212, 181, 107, 0.22);
}

.solar-card {
  background:
    radial-gradient(circle at top right, rgba(212, 181, 107, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(34, 26, 20, 0.96), rgba(25, 20, 17, 0.96));
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.22rem 0.62rem;
  border-radius: 999px;
  background: rgba(45, 133, 120, 0.14);
  color: #87d3c7;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tag.subtle {
  background: rgba(242, 236, 223, 0.07);
  color: var(--muted);
}

.solar-tag {
  background: rgba(196, 111, 66, 0.16);
  color: #f0b491;
}

.app-card h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.55rem;
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.app-card p {
  margin: 0.9rem 0 0;
  line-height: 1.65;
}

.meta {
  margin-top: auto;
  padding-top: 1.25rem;
  font-size: 0.94rem;
  line-height: 1.55;
}

.card-link {
  margin-top: 1rem;
  font-weight: 700;
  color: var(--gold);
}

.card-link:hover {
  text-decoration: underline;
}

@media (max-width: 980px) {
  .app-card {
    grid-column: span 6;
  }
}

@media (max-width: 680px) {
  .topbar {
    gap: 0.8rem;
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    padding-top: 1.6rem;
  }

  .hero,
  .category {
    border-radius: 24px;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .app-card {
    grid-column: span 12;
    min-height: auto;
  }
}