:root {
  --bg: #0d1015;
  --surface: #151a20;
  --surface-soft: #1b222b;
  --surface-light: #f7fafc;
  --text: #f7fafc;
  --text-dark: #10161c;
  --muted: #a5b1c2;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #27e282;
  --cyan: #4de8ff;
  --warm: #ffb347;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.32);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font: 16px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 16, 21, 0.86);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(39, 226, 130, 0.18);
}

.brand-title,
.brand-subtitle {
  display: block;
}

.brand-title {
  font-weight: 850;
  line-height: 1.1;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-actions a {
  color: var(--muted);
  font-weight: 750;
  text-decoration: none;
}

.nav-actions .btn {
  color: #06120d;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: #06120d;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  box-shadow: 0 12px 28px rgba(39, 226, 130, 0.18);
  font-weight: 850;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(39, 226, 130, 0.24);
}

.btn-small {
  min-height: 40px;
  padding: 9px 14px;
}

.btn-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: none;
}

.btn-light {
  color: var(--text-dark);
  background: #ffffff;
  box-shadow: none;
}

.hero {
  overflow: hidden;
  padding: 76px 0 70px;
  background:
    radial-gradient(circle at 14% 4%, rgba(39, 226, 130, 0.22), transparent 30%),
    radial-gradient(circle at 92% 14%, rgba(77, 232, 255, 0.18), transparent 34%),
    linear-gradient(180deg, #10161c 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 660px;
  margin-bottom: 18px;
  font-size: clamp(42px, 6vw, 70px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: 0;
}

.hero-copy > p {
  max-width: 610px;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 22px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-row span,
.privacy-panel span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid rgba(77, 232, 255, 0.24);
  border-radius: 999px;
  color: #d7fbff;
  background: rgba(77, 232, 255, 0.08);
  font-weight: 800;
}

.hero-media {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  border-radius: 16px;
}

.section {
  padding: 76px 0;
  background: #10161c;
}

.section-soft {
  background: #0f171d;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature {
  min-height: 238px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.feature-icon {
  display: inline-grid;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 12px;
  color: #06120d;
  background: var(--accent);
  font-weight: 900;
}

.feature p,
.showcase p,
.split p,
.cta-content p,
.support-box p {
  color: var(--muted);
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: 36px;
  align-items: center;
}

.preview-card {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
}

.preview-card img {
  border-radius: 16px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.5fr);
  gap: 34px;
  align-items: center;
}

.privacy-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.support-section {
  padding: 62px 0;
  background:
    radial-gradient(circle at 12% 50%, rgba(255, 179, 71, 0.14), transparent 30%),
    #10161c;
}

.support-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, #151a20, #10161c);
  box-shadow: var(--shadow);
}

.support-box h2 {
  margin-bottom: 10px;
}

.support-box p:last-child {
  margin-bottom: 0;
}

.support-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.support-actions-start {
  justify-content: flex-start;
  margin-top: 16px;
}

.coffee-link {
  display: inline-flex;
  width: 217px;
  height: 60px;
  min-width: 217px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.16s ease, filter 0.16s ease;
}

.coffee-link:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.coffee-link img {
  width: 217px;
  height: 60px;
  border-radius: 12px;
}

.qr-card {
  display: grid;
  gap: 8px;
  justify-items: center;
  margin: 0;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
}

.qr-card img {
  width: 150px;
  height: 150px;
  border-radius: 10px;
  background: #ffffff;
}

.qr-card figcaption {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.cta-band {
  padding: 56px 0;
  color: #ffffff;
  background: linear-gradient(135deg, #13a85a, #168a9b);
}

.cta-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-content h2 {
  color: #ffffff;
}

.cta-content p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
}

.footer {
  padding: 24px 0;
  color: var(--muted);
  background: #0d1015;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer a,
.back-link {
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.privacy-page {
  min-height: 100vh;
  padding: 56px 0;
  background:
    radial-gradient(circle at top left, rgba(39, 226, 130, 0.2), transparent 32%),
    linear-gradient(180deg, #10161c 0%, var(--bg) 100%);
}

.privacy-card {
  max-width: 840px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.privacy-card h1 {
  font-size: clamp(42px, 5vw, 62px);
}

.privacy-card h2 {
  margin-top: 28px;
  font-size: 24px;
}

.effective-date {
  color: var(--muted);
  font-weight: 750;
}

@media (max-width: 980px) {
  .hero-grid,
  .showcase,
  .split,
  .support-box {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, 1160px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-actions,
  .hero-actions,
  .cta-content,
  .footer-content,
  .support-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .nav-actions {
    gap: 10px;
  }

  .btn,
  .coffee-link {
    width: 100%;
  }

  .qr-card {
    width: 100%;
  }

  .hero {
    padding: 46px 0 48px;
  }

  h1 {
    font-size: 42px;
  }

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