:root {
  --bg: #f5f5f5;
  --surface: #ffffff;
  --text: #171717;
  --muted: #6f6f6f;
  --line: #e8e8e8;
  --yellow: #ffd100;
  --yellow-deep: #f5b800;
  --yellow-soft: #fff6c8;
  --red: #f04b2f;
  --green: #18a058;
  --green-soft: #e8f7ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: rgba(245, 245, 245, 0.9);
  backdrop-filter: blur(16px);
}

.nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--yellow);
  display: grid;
  place-items: center;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.nav-cta,
.button-primary {
  border-radius: 999px;
  background: var(--yellow);
  color: var(--text);
  font-weight: 900;
  padding: 10px 16px;
}

.button-secondary {
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 900;
  padding: 10px 16px;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 54px 20px 34px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--yellow-soft);
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  padding: 8px 12px;
}

h1 {
  margin: 18px 0 14px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.96;
  letter-spacing: 0;
}

.lead {
  max-width: 560px;
  color: #4a4a4a;
  font-size: 19px;
  line-height: 1.7;
  font-weight: 700;
}

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

.phone-card {
  border-radius: 34px;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 18px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.1);
}

.app-preview {
  border-radius: 26px;
  background: #f2f2f2;
  overflow: hidden;
  padding: 16px;
}

.preview-top {
  background: var(--yellow);
  border-radius: 20px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 150px;
}

.preview-top h2 {
  margin: 8px 0 0;
  font-size: 30px;
  line-height: 1.05;
}

.preview-top p {
  margin: 6px 0 0;
  color: #4b4200;
  font-weight: 800;
}

.preview-top img {
  width: 126px;
  height: 126px;
  object-fit: contain;
  margin-right: -14px;
}

.preview-metrics {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.preview-metric {
  background: var(--surface);
  border-radius: 14px;
  padding: 14px 10px;
}

.preview-metric strong {
  color: var(--green);
  font-size: 20px;
}

.preview-metric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  margin-top: 5px;
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 38px 20px;
}

.section h2 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0 0 12px;
}

.section-sub {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 700;
  max-width: 760px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}

.feature-card img {
  width: 78px;
  height: 78px;
  object-fit: contain;
}

.feature-card h3 {
  margin: 12px 0 8px;
  font-size: 20px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  font-weight: 700;
}

.download-panel {
  background: var(--text);
  color: white;
  border-radius: 24px;
  padding: 26px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
}

.download-panel h2 {
  margin: 0 0 8px;
}

.download-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.65;
  font-weight: 700;
}

.qr-placeholder {
  width: 148px;
  height: 148px;
  border-radius: 18px;
  background: white;
  color: var(--text);
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 13px;
  font-weight: 900;
  padding: 16px;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 42px 20px 72px;
}

.page-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px;
}

.page h1 {
  font-size: clamp(34px, 5vw, 56px);
}

.page h2 {
  margin-top: 30px;
}

.page p,
.page li {
  color: #4a4a4a;
  line-height: 1.75;
  font-weight: 700;
}

.page-card section {
  margin-top: 24px;
}

.legal a {
  color: var(--ink);
  font-weight: 900;
}

.status-box {
  border-radius: 18px;
  background: var(--yellow-soft);
  padding: 18px;
  margin-top: 20px;
}

.site-footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 20px 46px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
  }

  .nav-links {
    gap: 10px;
    font-size: 13px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 34px;
  }

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

  .download-panel {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}