:root {
  color-scheme: light;
  --background: #f7faf9;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: rgba(15, 23, 42, 0.09);
  --accent: #14b8a6;
  --accent-dark: #0f766e;
  --accent-soft: rgba(20, 184, 166, 0.12);
  --warning-soft: rgba(249, 115, 22, 0.12);
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  --radius-lg: 34px;
  --radius-md: 24px;
  --radius-sm: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(20, 184, 166, 0.18), transparent 34rem),
    radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.12), transparent 30rem),
    linear-gradient(180deg, #ffffff 0%, var(--background) 44%, #eef7f6 100%);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(247, 250, 249, 0.76);
  backdrop-filter: blur(24px);
}

.doc-page + .site-footer {
  margin-top: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0;
  font-size: 20px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(15, 118, 110, 0.2);
}

.top-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.top-nav a {
  padding: 10px 13px;
  border-radius: 999px;
}

.top-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.75);
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 82px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.82fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: center;
  padding: clamp(56px, 8vw, 92px) 0;
}

.hero-copy {
  max-width: 690px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid rgba(20, 184, 166, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 850;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(72px, 13vw, 168px);
  line-height: 0.86;
  font-weight: 950;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1;
  font-weight: 920;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 21px;
  line-height: 1.15;
  font-weight: 880;
}

.lead {
  max-width: 610px;
  color: var(--muted);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.3;
  font-weight: 650;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-action,
.secondary-action {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  border-radius: 999px;
  font-weight: 850;
}

.primary-action {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 16px 34px rgba(20, 184, 166, 0.34);
}

.secondary-action {
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
  border: 1px solid var(--line);
}

.phone-preview {
  display: flex;
  justify-content: center;
}

.phone-shell {
  width: min(100%, 380px);
  padding: 13px;
  border-radius: 52px;
  background: #0f172a;
  box-shadow: 0 40px 90px rgba(15, 23, 42, 0.28);
}

.phone-screen {
  min-height: 690px;
  overflow: hidden;
  border-radius: 42px;
  padding: 24px;
  background:
    linear-gradient(180deg, #effefa, #ffffff 45%, #f4f7f8),
    #ffffff;
}

.status-row {
  display: flex;
  justify-content: space-between;
  color: #0f172a;
  font-size: 13px;
  font-weight: 850;
}

.app-icon {
  display: block;
  width: 146px;
  height: 146px;
  margin: 46px auto 28px;
  border-radius: 34px;
  box-shadow: 0 26px 48px rgba(15, 118, 110, 0.2);
}

.metric-card,
.feature-card,
.privacy-panel,
.download-card,
.notice,
.timeline li {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.metric-card {
  padding: 20px;
  border-radius: 26px;
}

.metric-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 820;
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  color: var(--accent-dark);
  font-size: 38px;
  line-height: 1;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.tile {
  min-height: 88px;
  display: flex;
  align-items: flex-end;
  padding: 14px;
  border-radius: 20px;
  background: rgba(20, 184, 166, 0.1);
  color: #0f766e;
  font-weight: 850;
}

.section {
  scroll-margin-top: 126px;
  padding: clamp(54px, 8vw, 92px) 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading p,
.split-section p,
.privacy-panel p,
.download-section p,
.notice p {
  color: var(--muted);
  font-size: 18px;
  font-weight: 560;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  padding: 24px;
  border-radius: var(--radius-md);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 950;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-weight: 560;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: 34px;
  align-items: start;
}

.timeline {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  padding: 22px;
  border-radius: var(--radius-md);
}

.timeline strong,
.timeline span {
  display: block;
}

.timeline strong {
  margin-bottom: 6px;
  font-size: 19px;
}

.timeline span {
  color: var(--muted);
}

.privacy-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.7fr);
  gap: 28px;
  align-items: center;
  padding: clamp(28px, 5vw, 46px);
  border-radius: var(--radius-lg);
}

.storage-list {
  display: grid;
  gap: 10px;
}

.storage-list span {
  padding: 14px 16px;
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 850;
}

.download-section {
  padding-top: clamp(42px, 7vw, 78px);
  padding-bottom: clamp(28px, 5vw, 52px);
}

.download-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: 16px;
  align-items: stretch;
}

.download-card {
  min-height: 245px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(24px, 4vw, 34px);
  border-radius: var(--radius-lg);
}

.primary-download {
  background:
    radial-gradient(circle at 88% 16%, rgba(20, 184, 166, 0.22), transparent 15rem),
    linear-gradient(135deg, rgba(20, 184, 166, 0.18), rgba(255, 255, 255, 0.82)),
    var(--surface);
}

.download-label {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 16px;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.download-card h3 {
  margin-bottom: 10px;
  font-size: clamp(30px, 4vw, 46px);
}

.download-card p {
  max-width: 520px;
  margin-bottom: 0;
}

.download-button {
  min-height: 54px;
  width: fit-content;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 16px 34px rgba(20, 184, 166, 0.28);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.download-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(20, 184, 166, 0.34);
}

.download-button.secondary {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.notice {
  display: grid;
  gap: 14px;
  margin: 0 0 34px;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(249, 115, 22, 0.12), rgba(255, 255, 255, 0.72)),
    var(--surface);
}

.notice h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
}

.notice p {
  max-width: 860px;
  margin-bottom: 0;
}

.notice-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.notice-button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 19px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 14px 30px rgba(20, 184, 166, 0.26);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.notice-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(20, 184, 166, 0.32);
}

.notice a:not(.notice-button) {
  color: var(--accent-dark);
  font-weight: 900;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 5vw, 64px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.doc-page {
  width: min(900px, calc(100% - 40px));
  margin: clamp(24px, 5vw, 54px) auto 0;
  padding: clamp(30px, 5vw, 62px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.doc-page h1 {
  max-width: 760px;
  margin-bottom: 12px;
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1;
}

.legal-title-mobile {
  display: none;
}

.legal-title-mobile span {
  display: block;
}

.doc-page h2 {
  padding-top: 26px;
  margin-top: 34px;
  margin-bottom: 12px;
  border-top: 1px solid var(--line);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.12;
}

.doc-page h3 {
  margin-top: 28px;
}

.doc-page p,
.doc-page li {
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.7;
}

.doc-page strong {
  color: var(--text);
}

.doc-page a {
  color: var(--accent-dark);
  font-weight: 850;
}

.doc-page ul,
.doc-page ol {
  padding-left: 22px;
}

.doc-page li {
  margin: 7px 0;
}

.doc-page code {
  padding: 2px 6px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.92em;
}

.doc-page pre {
  overflow-x: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-strong);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
}

.doc-page pre code {
  padding: 0;
  background: transparent;
  color: var(--text);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --background: #0f172a;
    --surface: rgba(30, 41, 59, 0.78);
    --surface-strong: #1e293b;
    --text: #f8fafc;
    --muted: #cbd5e1;
    --line: rgba(226, 232, 240, 0.1);
    --accent-dark: #5eead4;
    --accent-soft: rgba(20, 184, 166, 0.16);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  }

  body {
    background:
      radial-gradient(circle at 18% 0%, rgba(20, 184, 166, 0.2), transparent 32rem),
      radial-gradient(circle at 90% 15%, rgba(37, 99, 235, 0.16), transparent 30rem),
      linear-gradient(180deg, #0f172a 0%, #111827 55%, #0b1120 100%);
  }

  .site-header {
    background: rgba(15, 23, 42, 0.72);
  }

  .top-nav a:hover,
  .eyebrow,
  .secondary-action,
  .download-button.secondary {
    background: rgba(30, 41, 59, 0.72);
  }

  .primary-download {
    background:
      radial-gradient(circle at 88% 16%, rgba(20, 184, 166, 0.22), transparent 15rem),
      linear-gradient(135deg, rgba(20, 184, 166, 0.14), rgba(30, 41, 59, 0.78)),
      var(--surface);
  }

  .phone-screen {
    background:
      linear-gradient(180deg, #10201f, #111827 48%, #0f172a),
      #0f172a;
  }

  .status-row {
    color: #f8fafc;
  }

  .tile {
    background: rgba(20, 184, 166, 0.14);
    color: #99f6e4;
  }
}

@media (max-width: 880px) {
  .site-header {
    gap: 14px;
  }

  .top-nav {
    overflow: visible;
    padding-bottom: 2px;
  }

  .hero,
  .split-section,
  .privacy-panel,
  .download-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }

  .phone-preview {
    justify-content: flex-start;
  }

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

  .legal-title-desktop {
    display: none;
  }

  .legal-title-mobile {
    display: block;
  }
}

@media (max-width: 620px) {
  main {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    align-items: center;
    gap: 10px;
    padding: 14px;
  }

  .brand {
    gap: 8px;
    font-size: 18px;
  }

  .brand img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .top-nav {
    justify-content: flex-end;
    gap: 4px;
    font-size: 12px;
  }

  .top-nav a {
    padding: 8px 7px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .primary-action,
  .secondary-action,
  .download-button,
  .notice-button {
    width: 100%;
  }

  .download-card {
    min-height: auto;
  }

  .phone-shell {
    border-radius: 38px;
    padding: 9px;
  }

  .phone-screen {
    min-height: 580px;
    border-radius: 30px;
    padding: 18px;
  }

  .app-icon {
    width: 118px;
    height: 118px;
    margin-top: 34px;
  }

  .metric-card strong {
    font-size: 31px;
  }

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

  .doc-page {
    width: min(100% - 24px, 900px);
    margin-top: 16px;
    padding: 22px 18px 28px;
    border-radius: 26px;
  }

  .doc-page h1 {
    font-size: clamp(28px, 8vw, 36px);
    line-height: 1.08;
  }

  .doc-page h2 {
    padding-top: 22px;
    margin-top: 28px;
    font-size: 23px;
  }

  .doc-page p,
  .doc-page li {
    font-size: 15.5px;
    line-height: 1.65;
  }

  .doc-page ul,
  .doc-page ol {
    padding-left: 19px;
  }

  .site-footer {
    flex-direction: column;
    padding: 24px 14px;
  }
}

@media (max-width: 380px) {
  .brand span {
    display: none;
  }
}