:root {
  --bg: #edf1f2;
  --bg-strong: #e4eaed;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #f7f8f9;
  --surface-alt: #e9eff2;
  --line: #b9c6cd;
  --line-strong: #8f9ca4;
  --text: #121920;
  --text-soft: #56616c;
  --accent: #aedcf1;
  --accent-strong: #1f627d;
  --accent-deep: #103848;
  --warm: #ece3da;
  --shadow-soft: 0 18px 48px rgba(18, 25, 32, 0.08);
  --shadow-card: 0 14px 36px rgba(18, 25, 32, 0.06);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 16px;
  --container: 1180px;
  --font-body: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Avenir Next Condensed", "Franklin Gothic Medium", "Arial Narrow", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(174, 220, 241, 0.5), transparent 34%),
    radial-gradient(circle at top right, rgba(236, 227, 218, 0.45), transparent 30%),
    linear-gradient(180deg, #f3f6f7 0%, var(--bg) 55%, #eef2f3 100%);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(31, 98, 125, 0.22);
  outline-offset: 4px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(237, 241, 242, 0.74);
  border-bottom: 1px solid rgba(143, 156, 164, 0.18);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0.8rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent-deep);
  color: #f6fbfd;
  box-shadow: 0 12px 24px rgba(16, 56, 72, 0.16);
}

.button-primary:hover {
  background: #15495e;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(143, 156, 164, 0.45);
  color: var(--text);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.96);
  border-color: rgba(143, 156, 164, 0.8);
}

.button-header {
  white-space: nowrap;
}

.hero {
  padding: clamp(2.6rem, 6vw, 4.9rem) 0 2.6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 560px);
  gap: 1.5rem;
  align-items: center;
}

.hero-copy {
  max-width: 680px;
}

.eyebrow,
.section-label {
  display: inline-flex;
  align-items: center;
  padding: 0.36rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(143, 156, 164, 0.28);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  margin-top: 1rem;
  font-family: var(--font-heading);
  font-size: clamp(3rem, 5.8vw, 5.4rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  max-width: 11ch;
}

.hero-subtitle {
  margin-top: 1.15rem;
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  color: var(--text-soft);
  max-width: 46ch;
}

.hero-points {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.hero-points span {
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(143, 156, 164, 0.28);
  color: #33404a;
  font-size: 0.94rem;
  font-weight: 600;
}

.hero-actions {
  margin-top: 1.45rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.store-panel {
  margin-top: 1.35rem;
  display: grid;
  gap: 0.8rem;
  max-width: 480px;
  padding: 1rem;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(143, 156, 164, 0.22);
  box-shadow: var(--shadow-card);
}

.store-note {
  color: var(--text-soft);
  font-size: 0.94rem;
}

.store-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  overflow: hidden;
}

.store-badge img {
  width: auto;
  height: 44px;
}

.store-badge-disabled {
  opacity: 0.88;
  filter: saturate(0.92);
  cursor: default;
}

.hero-media {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  align-items: start;
}

.phone-shot {
  margin: 0;
  padding: 0.6rem;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(245, 247, 248, 0.76));
  border: 1px solid rgba(143, 156, 164, 0.22);
  box-shadow: var(--shadow-soft);
}

.phone-shot img {
  width: 100%;
  border-radius: 24px;
}

.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding-top: 1.9rem;
}

.section-alt {
  background: linear-gradient(180deg, rgba(233, 239, 242, 0.66), rgba(247, 248, 249, 0.82));
  border-top: 1px solid rgba(143, 156, 164, 0.18);
  border-bottom: 1px solid rgba(143, 156, 164, 0.18);
}

.section-heading {
  max-width: 760px;
}

.section-heading h2,
.feature-copy h2,
.dual-panel h2 {
  margin-top: 0.95rem;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.2vw, 3rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.section-heading p:last-child,
.feature-copy > p:last-child {
  margin-top: 1rem;
  color: var(--text-soft);
  font-size: 1.04rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.benefits-grid {
  margin-top: 1.6rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card,
.shot-card,
.difference-item,
.formula-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(143, 156, 164, 0.24);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-card);
}

.info-card {
  padding: 1.2rem;
}

.info-card h3,
.feature-item h3,
.shot-card h3,
.difference-item h3,
.formula-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.info-card p,
.feature-item p,
.shot-card p,
.difference-item p,
.formula-card p,
.audience-list li {
  margin-top: 0.75rem;
  color: var(--text-soft);
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(290px, 390px);
  gap: 1.1rem;
  align-items: start;
}

.feature-list {
  margin-top: 1.35rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.feature-item {
  padding: 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(143, 156, 164, 0.2);
}

.formula-panel {
  display: grid;
  gap: 1rem;
}

.formula-card {
  padding: 1.2rem;
}

.formula-card-accent {
  background: linear-gradient(145deg, rgba(174, 220, 241, 0.5), rgba(236, 227, 218, 0.56));
}

.formula-label {
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.formula-card h3 {
  margin-top: 0.85rem;
}

.formula-text {
  margin-top: 0.8rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.93rem;
  line-height: 1.55;
  color: #183948;
}

.screenshot-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.shot-card {
  padding: 0.8rem;
}

.shot-card img {
  border-radius: 24px;
}

.shot-card h3,
.shot-card p {
  padding-inline: 0.35rem;
}

.shot-card h3 {
  margin-top: 1rem;
}

.dual-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  align-items: start;
}

.audience-list {
  margin-top: 1.5rem;
  padding-left: 1.2rem;
}

.audience-list li + li {
  margin-top: 0.55rem;
}

.difference-panel {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(240, 244, 246, 0.78));
  border: 1px solid rgba(143, 156, 164, 0.22);
  box-shadow: var(--shadow-card);
}

.difference-list {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.9rem;
}

.difference-item {
  padding: 1.15rem 1.2rem;
}

.site-footer {
  padding: 1.4rem 0 2rem;
  border-top: 1px solid rgba(143, 156, 164, 0.18);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-soft);
  font-size: 0.94rem;
}

@media (max-width: 1080px) {
  .hero-grid,
  .feature-layout,
  .dual-panel {
    grid-template-columns: 1fr;
  }

  .benefits-grid,
  .screenshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero-copy {
    max-width: none;
  }

  .hero-media {
    max-width: 640px;
  }
}

@media (max-width: 820px) {
  .site-nav,
  .button-header {
    display: none;
  }

  .hero {
    padding-top: 2.2rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.6rem, 11vw, 4.4rem);
  }

  .feature-list,
  .benefits-grid,
  .screenshot-grid {
    grid-template-columns: 1fr;
  }

  .hero-media {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 1.1rem, var(--container));
  }

  .section {
    padding: 4.3rem 0;
  }

  .hero-points span,
  .button,
  .store-panel {
    width: 100%;
  }

  .hero-actions,
  .cta-actions,
  .store-row {
    flex-direction: column;
    align-items: stretch;
  }

  .store-badge {
    justify-content: flex-start;
  }

  .hero-media {
    grid-template-columns: 1fr;
  }

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