:root {
  --bg-0: #f7fffd;
  --bg-1: #eefaf5;
  --bg-card: #ffffff;
  --text-strong: #0f2520;
  --text-muted: #4a655d;
  --line: #d7ebe3;
  --accent: #0f9a77;
  --accent-strong: #0c7c60;
  --accent-soft: #d8f5eb;
  --shadow-soft: 0 12px 30px rgba(9, 66, 50, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --max-width: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", Tahoma, sans-serif;
  color: var(--text-strong);
  background:
    radial-gradient(circle at 12% 0%, rgba(15, 154, 119, 0.14), transparent 36%),
    radial-gradient(circle at 88% 100%, rgba(12, 124, 96, 0.12), transparent 32%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 48%, var(--bg-0));
  line-height: 1.55;
}

a {
  color: var(--accent-strong);
}

a:hover {
  color: var(--accent);
}

:focus-visible {
  outline: 3px solid rgba(15, 154, 119, 0.45);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-6);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(247, 255, 253, 0.86);
  border-bottom: 1px solid rgba(15, 154, 119, 0.14);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-strong);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand:hover {
  color: var(--text-strong);
}

.brand img {
  width: 1.45rem;
  height: 1.45rem;
  display: block;
  border-radius: 8px;
  border: 1px solid rgba(15, 154, 119, 0.16);
  background: #d3d3d3;
}

.nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-list a {
  text-decoration: none;
  font-weight: 700;
  color: var(--text-strong);
}

.hero {
  padding-top: var(--space-3);
  display: grid;
  gap: var(--space-5);
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 3rem);
  line-height: 1.1;
}

.hero-points {
  margin: var(--space-3) 0 var(--space-4);
  padding: 0;
  list-style: none;
  max-width: 38ch;
  display: grid;
  gap: 0.7rem;
}

.hero-points li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--text-muted);
  font-size: 1.06rem;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--accent);
}

.play-badge-link {
  display: inline-block;
  line-height: 0;
  border-radius: 12px;
  transition: transform 150ms ease;
}

.play-badge-link:hover {
  transform: translateY(-1px);
}

.play-badge {
  width: min(220px, 70vw);
  height: auto;
  display: block;
}

.hero-image-wrap {
  background: var(--bg-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  border-radius: var(--radius-lg);
  padding: calc(var(--space-3) / 2);
}

.hero-image-wrap img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
}

h2 {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.35rem, 3.5vw, 2rem);
}

.screenshots {
  display: grid;
  gap: var(--space-3);
  grid-auto-flow: column;
  grid-auto-columns: minmax(14.5rem, 78%);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-1);
}

.screenshots::-webkit-scrollbar {
  height: 9px;
}

.screenshots::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(15, 154, 119, 0.32);
}

.screenshot-card {
  scroll-snap-align: start;
  background: var(--bg-card);
  border-radius: 18px;
  border: 1px solid rgba(15, 154, 119, 0.14);
  box-shadow: var(--shadow-soft);
  padding: calc(var(--space-2) / 2);
  overflow: hidden;
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.features-grid {
  display: grid;
  gap: var(--space-3);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.feature-card h3 {
  margin: 0 0 var(--space-1);
  font-size: 1.04rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
}

.use-cases {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: var(--space-4);
}

.use-cases ul {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: var(--space-2);
}

.download-panel {
  text-align: center;
  background: linear-gradient(155deg, #ffffff, var(--accent-soft));
  border: 1px solid rgba(15, 154, 119, 0.24);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.6rem, 4vw, 2.8rem);
}

.download-panel p {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
}

.download-panel .play-badge {
  margin-inline: auto;
}

.site-footer {
  border-top: 1px solid rgba(15, 154, 119, 0.2);
  padding-block: var(--space-5);
  margin-top: var(--space-6);
}

.footer-inner {
  display: grid;
  gap: var(--space-3);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-links a {
  font-weight: 700;
  text-decoration: none;
}

.footer-meta {
  color: var(--text-muted);
  display: grid;
  gap: 0.15rem;
}

.page-main {
  padding-block: var(--space-7);
}

.page-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.25rem, 4vw, 2.25rem);
}

.page-card h1 {
  margin-top: 0;
  margin-bottom: var(--space-4);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
}

.page-card h2 {
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: 1.2rem;
}

.page-card p,
.page-card li {
  color: var(--text-muted);
}

.page-card ul {
  margin-top: 0;
}

@media (min-width: 760px) {
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: var(--space-6);
  }

  .hero-image-wrap {
    max-width: 340px;
    margin-left: auto;
  }

  .screenshots {
    grid-auto-flow: row;
    grid-auto-columns: unset;
    overflow: visible;
    scroll-snap-type: none;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}