:root {
  --background: #f6f7f9;
  --surface: #ffffff;
  --surface-soft: #fafbfc;
  --text: #121826;
  --text-muted: #5f6877;
  --border: #e4e7ec;
  --border-strong: #d8dee8;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
  --shadow-soft: 0 8px 18px rgba(15, 23, 42, 0.04);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content-width: 1040px;
  --reading-width: 780px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-hover);
}

.container {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 247, 249, 0.94);
  border-bottom: 1px solid rgba(228, 231, 236, 0.92);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: 68px;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.94rem;
}

.nav-links a[aria-current="page"] {
  color: var(--text);
}

.section {
  padding: 3.35rem 0;
}

.section-tight {
  padding-top: 2.1rem;
  padding-bottom: 2.1rem;
}

.page-shell {
  padding-top: 2.35rem;
  padding-bottom: 2.45rem;
}

.hero {
  padding-top: 2.45rem;
  padding-bottom: 1.7rem;
}

.hero-card,
.privacy-panel,
.cta-panel,
.content-page {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 1.8rem;
  padding: 2rem;
  align-items: center;
}

.hero-copy-wrap {
  max-width: 560px;
}

.hero h1 {
  margin: 0.3rem 0 0.8rem;
  max-width: 10.5ch;
  font-size: clamp(2.4rem, 5.2vw, 4.05rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.hero-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 58ch;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.1rem;
  margin-top: 1.45rem;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.05rem 0 0;
  padding: 0;
  list-style: none;
}

.hero-highlights li,
.preview-chip,
.mock-chip,
.mini-chip,
.tool-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero-highlights li {
  padding: 0.45rem 0.8rem;
  color: var(--text-muted);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.8rem 1.2rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.button-small {
  min-height: 38px;
  padding: 0.58rem 0.92rem;
  font-size: 0.9rem;
}

.button-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-soft);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-hover);
  color: #ffffff;
  transform: translateY(-1px);
}

.text-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.text-links a,
.support-links a,
.back-link a {
  color: var(--text-muted);
  font-weight: 600;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.device-frame {
  width: min(100%, 390px);
  padding: 0.8rem;
  border-radius: 34px;
  background: #f3f5f8;
  border: 1px solid var(--border-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), var(--shadow);
}

.device-screen {
  display: grid;
  gap: 0.9rem;
  padding: 0.9rem;
  border-radius: 26px;
  background: linear-gradient(to bottom, #ffffff, #f8fafc);
  border: 1px solid #edf1f5;
}

.mock-topbar {
  display: flex;
  gap: 0.35rem;
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d6dde8;
}

.mock-app-card,
.mock-side-card,
.preview-card,
.card,
.info-strip,
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.mock-app-card,
.mock-side-card {
  border-radius: var(--radius-lg);
  padding: 0.9rem;
}

.mock-app-header,
.preview-card-head,
.info-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.mock-kicker {
  margin: 0 0 0.2rem;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.mock-app-header h2,
.preview-card h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.25;
}

.mock-chip {
  padding: 0.35rem 0.65rem;
  color: var(--accent);
  background: rgba(37, 99, 235, 0.08);
}

.mock-lines,
.preview-ui {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.line,
.preview-line {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: #e8edf4;
}

.line.long,
.preview-line.long {
  width: 100%;
}

.line.medium,
.preview-line.medium {
  width: 72%;
}

.line.short,
.preview-line.short {
  width: 48%;
}

.mock-toolbar,
.preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.tool-pill,
.mini-chip,
.preview-chip {
  padding: 0.34rem 0.62rem;
  color: var(--text-muted);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.mini-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.section-heading {
  margin-bottom: 1.15rem;
}

.narrow-heading {
  max-width: 650px;
}

.section-heading h2,
.content-page h1,
.privacy-panel h2,
.cta-panel h2 {
  margin: 0;
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.section-copy,
.cta-panel p,
.privacy-panel p,
.content-page p,
.content-page li {
  margin: 0;
  color: var(--text-muted);
}

.card-grid,
.audience-grid,
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.card,
.preview-card {
  padding: 1.2rem;
  border-radius: var(--radius-md);
}

.card {
  min-height: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.card:focus-within,
.preview-card:hover,
.preview-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
}

.card h3,
.faq-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  line-height: 1.3;
}

.preview-card p,
.card p,
.faq-item p {
  color: var(--text-muted);
}

.section-preview {
  padding-top: 1rem;
  padding-bottom: 1.7rem;
}

.preview-card-head {
  margin-bottom: 0.7rem;
}

.preview-block {
  height: 38px;
  border-radius: 14px;
  background: #eef2f7;
  border: 1px solid #e2e8f0;
}

.preview-block-large {
  height: 52px;
}

.preview-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d7dfeb;
  flex-shrink: 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.34);
}

.privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1.2rem;
  padding: 1.45rem 1.6rem;
  align-items: start;
}

.check-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.check-list li + li {
  margin-top: 0.58rem;
}

.cta-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.55rem 1.6rem;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-width: 240px;
  text-align: center;
}

.cta-note {
  font-size: 0.9rem;
}

.site-footer {
  padding: 0.7rem 0 1.7rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}

.footer-title {
  margin: 0 0 0.35rem;
  font-weight: 700;
  color: var(--text);
  font-size: 0.98rem;
}

.footer-copy,
.copyright {
  color: var(--text-muted);
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li {
  margin-top: 0.38rem;
}

.content-page {
  width: min(calc(100% - 2rem), var(--reading-width));
  margin: 0 auto;
  padding: 2rem;
}

.effective-date {
  margin: 0.3rem 0 1.05rem;
}

.policy-section + .policy-section {
  margin-top: 1.45rem;
}

.policy-section h2 {
  margin: 0 0 0.65rem;
  font-size: 1.28rem;
  line-height: 1.24;
}

.info-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  margin: 1.2rem 0 0.35rem;
}

.info-item {
  align-items: center;
}

.info-label {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.faq-item {
  margin-top: 0.75rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
}

.faq-item + .faq-item {
  border-top: 1px solid var(--border);
}

.support-links,
.back-link {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.55rem;
}

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.2);
  outline-offset: 3px;
  border-radius: 10px;
}

@media (max-width: 960px) {
  .hero-layout,
  .privacy-layout,
  .cta-layout,
  .card-grid,
  .preview-grid,
  .footer-grid,
  .info-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-layout,
  .privacy-layout {
    gap: 1.5rem;
  }

  .cta-layout {
    display: grid;
  }
}

@media (max-width: 760px) {
  .site-header {
    position: static;
  }

  .nav-bar,
  .nav-group {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-bar {
    padding: 0.85rem 0;
  }

  .nav-links {
    gap: 0.85rem;
  }

  .hero-layout,
  .card-grid,
  .audience-grid,
  .preview-grid,
  .privacy-layout,
  .footer-grid,
  .info-strip {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 2.7rem 0;
  }

  .section-tight,
  .section-preview {
    padding-top: 1.8rem;
    padding-bottom: 1.8rem;
  }

  .hero {
    padding-top: 1.8rem;
    padding-bottom: 1.05rem;
  }

  .hero-card,
  .content-page,
  .privacy-panel,
  .cta-panel {
    border-radius: 22px;
  }

  .hero-layout,
  .content-page,
  .privacy-layout,
  .cta-layout {
    padding: 1.3rem;
  }

  .hero-actions,
  .text-links,
  .support-links,
  .back-link,
  .cta-actions {
    align-items: flex-start;
  }

  .button,
  .button-small {
    width: 100%;
  }

  .device-frame {
    width: 100%;
    max-width: 360px;
  }
}