*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #141312;
  --text: #f7f0e8;
  --muted: #b9ada1;
  --line: rgba(255, 255, 255, 0.07);
  --green: #2e7a52;
  --green-bright: #3d9e6a;
}

html {
  font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

/* ── HERO ── */

.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background:
    radial-gradient(circle at 28% 50%, rgba(46, 122, 82, 0.16), transparent 52%),
    radial-gradient(circle at 74% 18%, rgba(80, 120, 190, 0.09), transparent 44%),
    #0a100c;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-viewer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.viewer-img {
  width: min(78vw, 1100px);
  border-radius: 18px;
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.06);
  margin-top: -32px;
  display: block;
  object-fit: cover;
}

.viewer-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.55);
  font-size: 16px;
  z-index: 2;
  pointer-events: none;
  user-select: none;
}

.viewer-arrow.left  { left: max(5vw, 40px); }
.viewer-arrow.right { right: max(5vw, 40px); }

.hero-wordmark {
  position: absolute;
  top: 26px;
  left: 36px;
  z-index: 10;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: rgba(247, 240, 232, 0.85);
  line-height: 1.15;
}

.hero-wordmark-sub {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--muted);
}

.hero-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 80px 44px 44px;
  background: linear-gradient(
    to top,
    rgba(10, 16, 12, 0.97) 0%,
    rgba(10, 16, 12, 0.55) 55%,
    transparent 100%
  );
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.hero-tagline {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1;
  color: var(--text);
}

.hero-tagline span {
  color: var(--muted);
  font-weight: 500;
}

/* ── BUTTONS ── */

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 999px;
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 150ms ease, transform 150ms ease;
}

.btn-download:hover {
  background: var(--green-bright);
  transform: translateY(-1px);
}

.btn-download-lg {
  font-size: 1rem;
  padding: 16px 32px;
}

/* ── SCREENSHOTS ── */

.screenshots {
  padding-top: 64px;
}

.screenshots-label {
  padding: 0 44px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--green-bright);
  margin-bottom: 24px;
  display: block;
}

.ss-primary {
  width: 100%;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.ss-primary img {
  width: min(52vw, 680px);
  border-radius: 18px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.06);
  display: block;
}

.ss-row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line);
}

.ss-half {
  overflow: hidden;
  line-height: 0;
}

.ss-half:first-child {
  border-right: 1px solid var(--line);
}

.ss-half img {
  width: 100%;
  display: block;
  object-fit: cover;
  object-position: top left;
}

/* ── FEATURES ── */

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
}

.feature {
  padding: 36px 32px;
  border-right: 1px solid var(--line);
}

.feature:last-child {
  border-right: none;
}

.feature-name {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  color: var(--text);
}

.feature-note {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── DOWNLOAD ── */

.download {
  text-align: center;
  padding: 100px 48px;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 122, 82, 0.1), transparent 70%);
  pointer-events: none;
}

.download-title {
  font-size: clamp(2.4rem, 4vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.06em;
  line-height: 0.96;
  margin-bottom: 32px;
}

.download-meta {
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--muted);
  opacity: 0.65;
}

/* ── FOOTER ── */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
}

.footer-wordmark {
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color 140ms ease;
}

.site-footer a:hover {
  color: var(--text);
}

/* ── RESPONSIVE ── */

@media (max-width: 900px) {
  .hero-bottom {
    flex-direction: column;
    align-items: flex-start;
    padding: 60px 28px 32px;
  }

  .viewer-img {
    width: min(72vw, 480px);
  }

  .features {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature:nth-child(2) {
    border-right: none;
  }

  .feature:nth-child(1),
  .feature:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }

  .screenshots-label {
    padding: 0 24px;
  }

  .site-footer {
    padding: 20px 24px;
  }
}

@media (max-width: 600px) {
  .hero-wordmark {
    left: 24px;
  }

  .hero-tagline {
    font-size: 1.8rem;
  }

  .viewer-img {
    width: 88vw;
    border-radius: 18px;
  }

  .viewer-arrow {
    display: none;
  }

  .ss-row2 {
    grid-template-columns: 1fr;
  }

  .ss-half:first-child {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .features {
    grid-template-columns: 1fr;
  }

  .feature {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .feature:last-child {
    border-bottom: none;
  }

  .download {
    padding: 72px 28px;
  }

  .download-title {
    font-size: 2.2rem;
  }
}