:root {
  color-scheme: light dark;
  --primary: #3F51B5;
  --on-primary: #FFFFFF;
  --primary-container: #E1E5FF;
  --on-primary-container: #111B63;
  --surface: #FFFBFE;
  --surface-container-low: #F7F2FA;
  --surface-container: #F3EDF7;
  --surface-container-high: #ECE6F0;
  --surface-container-highest: #E6E0E9;
  --on-surface: #1D1B20;
  --on-surface-variant: #49454F;
  --outline: #79747E;
  --outline-variant: #CAC4D0;
  --success: #2E7D32;
  --max: 1160px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --elevation-1: 0 1px 2px rgba(0,0,0,.12), 0 1px 3px rgba(0,0,0,.08);
  --elevation-2: 0 2px 6px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #BCC3FF;
    --on-primary: #18256B;
    --primary-container: #303E8C;
    --on-primary-container: #DEE1FF;
    --surface: #141318;
    --surface-container-low: #1D1B20;
    --surface-container: #211F26;
    --surface-container-high: #2B2930;
    --surface-container-highest: #36343B;
    --on-surface: #E6E1E5;
    --on-surface-variant: #CAC4D0;
    --outline: #938F99;
    --outline-variant: #49454F;
    --success: #81C784;
    --elevation-1: 0 1px 2px rgba(0,0,0,.35);
    --elevation-2: 0 3px 10px rgba(0,0,0,.32);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--on-surface);
  font-family: Roboto, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
.material-symbols-rounded {
  font-family: 'Material Symbols Rounded';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'liga';
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.icon-filled { font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 100; padding: 10px 14px; border-radius: 12px; background: var(--primary); color: var(--on-primary); text-decoration: none; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--outline-variant);
}
.nav-shell { width: min(var(--max), calc(100% - 28px)); margin: 0 auto; }
.nav-top { min-height: 68px; display: flex; align-items: center; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 1.05rem; font-weight: 700; white-space: nowrap; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav-tabs { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.nav-tab {
  min-height: 44px;
  padding: 0 14px;
  border-radius: 22px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-decoration: none;
  color: var(--on-surface-variant);
  font-size: .92rem;
  font-weight: 600;
  white-space: nowrap;
}
.nav-tab .material-symbols-rounded { font-size: 20px; }
.nav-tab:hover { background: var(--surface-container); color: var(--on-surface); }
.nav-tab[aria-current="page"], .nav-tab.active {
  background: var(--primary-container);
  color: var(--on-primary-container);
}
.nav-tab[aria-current="page"] .material-symbols-rounded, .nav-tab.active .material-symbols-rounded { font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24; }

.button {
  min-height: 44px;
  padding: 0 20px;
  border-radius: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: .94rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}
.button .material-symbols-rounded { font-size: 20px; }
.button-filled { background: var(--primary); color: var(--on-primary); box-shadow: var(--elevation-1); }
.button-filled:hover { filter: brightness(1.04); box-shadow: var(--elevation-2); }
.button-tonal { background: var(--primary-container); color: var(--on-primary-container); }
.button-outlined { border-color: var(--outline); color: var(--primary); background: transparent; }
.button-disabled { background: var(--surface-container); color: var(--on-surface-variant); cursor: default; }

.hero {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 70px 0 52px;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(330px, .75fr);
  gap: clamp(36px, 7vw, 88px);
  align-items: center;
}
.hero-copy { min-width: 0; }
.label-chip {
  width: fit-content;
  min-height: 32px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 16px;
  background: var(--surface-container);
  color: var(--on-surface-variant);
  font-size: .84rem;
  font-weight: 600;
}
.label-chip .material-symbols-rounded { font-size: 18px; color: var(--primary); }
.hero h1 {
  margin: 22px 0 16px;
  max-width: 720px;
  font-size: clamp(3rem, 6.5vw, 5.2rem);
  line-height: .98;
  letter-spacing: -.052em;
  font-weight: 760;
}
.hero h1 span { color: var(--primary); }
.hero-lede { margin: 0; max-width: 650px; color: var(--on-surface-variant); font-size: clamp(1.05rem, 2vw, 1.22rem); }
.hero-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.trust-row { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.trust-chip { min-height: 32px; padding: 0 11px; border-radius: 16px; display: inline-flex; align-items: center; gap: 6px; background: var(--surface-container-low); color: var(--on-surface-variant); font-size: .85rem; font-weight: 600; }
.trust-chip .material-symbols-rounded { font-size: 18px; color: var(--success); }

.hero-media { display: flex; justify-content: center; min-width: 0; }
.phone-frame {
  width: min(340px, 100%);
  padding: 9px;
  border-radius: 38px;
  background: #202124;
  box-shadow: 0 18px 50px rgba(25, 28, 65, .24);
}
.phone-screen { position: relative; overflow: hidden; border-radius: 30px; background: var(--surface-container); aspect-ratio: 9 / 19.5; }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.section { padding: 72px 0; }
.section.alt { background: var(--surface-container-low); }
.section-inner { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.section-heading { max-width: 760px; margin-bottom: 32px; }
.section-heading.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-heading h2 { margin: 0 0 10px; font-size: clamp(2rem, 4.3vw, 3.2rem); line-height: 1.05; letter-spacing: -.038em; }
.section-heading p { margin: 0; color: var(--on-surface-variant); font-size: 1.04rem; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature-card { padding: 24px; border-radius: var(--radius-lg); background: var(--surface-container); min-height: 215px; }
.feature-icon { width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; background: var(--primary-container); color: var(--on-primary-container); margin-bottom: 22px; }
.feature-icon .material-symbols-rounded { font-size: 27px; }
.feature-card h3 { margin: 0 0 8px; font-size: 1.12rem; }
.feature-card p { margin: 0; color: var(--on-surface-variant); font-size: .94rem; }

.screenshot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; }
.screenshot-card { padding: 18px; background: var(--surface-container); border-radius: var(--radius-xl); }
.screenshot-card h3 { margin: 16px 6px 3px; font-size: 1.08rem; }
.screenshot-card p { margin: 0 6px 4px; color: var(--on-surface-variant); font-size: .9rem; }
.screenshot-window { width: min(320px, 100%); margin: 0 auto; border-radius: 28px; overflow: hidden; background: var(--surface-container-high); aspect-ratio: 9 / 19.5; box-shadow: var(--elevation-1); }
.screenshot-window img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }

.privacy-panel { padding: clamp(26px, 5vw, 44px); border-radius: var(--radius-xl); background: var(--primary-container); color: var(--on-primary-container); display: grid; grid-template-columns: 1.15fr .85fr; gap: 30px; align-items: center; }
.privacy-panel h2 { margin: 0 0 10px; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.04em; line-height: 1.04; }
.privacy-panel p { margin: 0; opacity: .9; }
.privacy-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.privacy-list li { display: flex; gap: 10px; align-items: center; font-weight: 650; }
.privacy-list .material-symbols-rounded { font-size: 21px; }

.download-panel { padding: clamp(26px, 5vw, 46px); border-radius: var(--radius-xl); background: var(--surface-container); display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.download-panel h2 { margin: 0 0 9px; font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -.04em; }
.download-panel p { margin: 0; color: var(--on-surface-variant); }
.download-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
.small-note { margin-top: 10px; color: var(--on-surface-variant); font-size: .84rem; }

.site-footer { padding: 30px 0 44px; }
.footer-inner { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; padding-top: 24px; border-top: 1px solid var(--outline-variant); display: flex; align-items: center; gap: 18px; }
.footer-brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; }
.footer-brand img { width: 28px; height: 28px; border-radius: 8px; }
.footer-copy { color: var(--on-surface-variant); font-size: .82rem; }
.footer-links { margin-left: auto; display: flex; flex-wrap: wrap; gap: 4px; }
.footer-links a { min-height: 36px; padding: 0 10px; border-radius: 18px; display: inline-flex; align-items: center; text-decoration: none; color: var(--on-surface-variant); font-size: .88rem; }
.footer-links a:hover { background: var(--surface-container); color: var(--on-surface); }

.legal-wrap { width: min(900px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 76px; }
.legal-header { margin-bottom: 26px; }
.legal-header h1 { margin: 12px 0 8px; font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1; letter-spacing: -.045em; }
.legal-header p { margin: 0; color: var(--on-surface-variant); }
.prose { padding: clamp(24px, 5vw, 42px); border-radius: var(--radius-xl); background: var(--surface-container-low); }
.prose h2 { margin: 30px 0 9px; font-size: 1.3rem; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--on-surface-variant); }
.prose a { color: var(--primary); font-weight: 650; }
.prose strong { color: var(--on-surface); }
.prose ul { padding-left: 22px; }
.support-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 18px 0 8px; }
.support-card { padding: 20px; border-radius: var(--radius-lg); background: var(--surface-container); }
.support-card .material-symbols-rounded { color: var(--primary); font-size: 28px; }
.support-card h3 { margin: 12px 0 5px; }
.support-card p { margin: 0 0 14px; font-size: .92rem; }
.support-card a { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-weight: 700; text-decoration: none; }
.support-card a .material-symbols-rounded { font-size: 18px; }

@media (max-width: 960px) {
  .nav-top { flex-wrap: wrap; padding: 9px 0; gap: 8px 14px; }
  .nav-tabs { order: 3; width: 100%; margin-left: 0; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
  .nav-tabs::-webkit-scrollbar { display: none; }
  .nav-cta { margin-left: auto; }
  .hero { grid-template-columns: 1fr; padding-top: 54px; }
  .hero-copy { text-align: center; }
  .hero-copy .label-chip { margin-inline: auto; }
  .hero-lede { margin-inline: auto; }
  .hero-actions, .trust-row { justify-content: center; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .privacy-panel { grid-template-columns: 1fr; }
  .download-panel { grid-template-columns: 1fr; }
  .download-actions { justify-content: flex-start; }
}

@media (max-width: 640px) {
  .nav-shell { width: min(100% - 18px, var(--max)); }
  .nav-top { min-height: 0; }
  .brand img { width: 32px; height: 32px; }
  .brand { font-size: .98rem; }
  .nav-cta { min-height: 40px; padding-inline: 14px; font-size: .86rem; }
  .nav-tab { min-height: 40px; padding: 0 12px; font-size: .86rem; }
  .nav-tab .material-symbols-rounded { font-size: 18px; }
  .hero { width: min(100% - 24px, var(--max)); padding-top: 42px; gap: 30px; }
  .hero h1 { font-size: clamp(2.7rem, 14vw, 4rem); }
  .section { padding: 56px 0; }
  .section-inner { width: min(100% - 24px, var(--max)); }
  .feature-grid, .screenshot-grid, .support-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .phone-frame { width: min(310px, 92vw); }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { margin-left: 0; }
  .legal-wrap { width: min(100% - 24px, 900px); padding-top: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}