:root {
  color-scheme: light;
  --background: #f6f7f9;
  --foreground: #17191d;
  --card: #ffffff;
  --muted: #626a76;
  --muted-surface: #eef1f4;
  --border: #dce1e7;
  --accent: #c52230;
  --accent-hover: #a91c27;
  --accent-soft: #fff0f1;
  --accent-foreground: #ffffff;
  --ring: rgba(197, 34, 48, 0.32);
  --success: #18794e;
  --shadow: 0 18px 48px rgba(20, 26, 38, 0.09);
  --radius: 1rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --background: #0f1115;
  --foreground: #f2f4f7;
  --card: #171a20;
  --muted: #a6adb8;
  --muted-surface: #20242c;
  --border: #303641;
  --accent: #f16b73;
  --accent-hover: #ff8288;
  --accent-soft: #3a1b22;
  --accent-foreground: #26080a;
  --ring: rgba(241, 107, 115, 0.42);
  --success: #65d6a2;
  --shadow: 0 20px 52px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-width: 20rem; margin: 0; background: var(--background); color: var(--foreground); font-size: 1rem; line-height: 1.6; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { color: inherit; font: inherit; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.section-shell { width: min(100% - 2rem, 72rem); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: .75rem; left: .75rem; transform: translateY(-5rem); padding: .7rem 1rem; border-radius: .6rem; background: var(--accent); color: var(--accent-foreground); font-weight: 700; }
.skip-link:focus { transform: none; }

.site-header { position: sticky; z-index: 10; top: 0; border-bottom: 1px solid color-mix(in srgb, var(--border) 78%, transparent); background: color-mix(in srgb, var(--background) 88%, transparent); backdrop-filter: blur(16px); }
.header-inner { display: flex; width: min(100% - 2rem, 72rem); min-height: 4.75rem; margin-inline: auto; align-items: center; gap: 1rem; }
.brand { display: inline-flex; min-height: 2.75rem; align-items: center; gap: .7rem; color: var(--foreground); font-weight: 760; text-decoration: none; }
.brand img { width: 2.35rem; height: 2.35rem; object-fit: contain; filter: drop-shadow(0 0 .45rem rgba(197, 34, 48, .2)); }
.site-nav { display: flex; margin-left: auto; align-items: center; gap: .25rem; }
.site-nav a { display: inline-flex; min-height: 2.75rem; align-items: center; padding: .5rem .75rem; border-radius: .6rem; color: var(--muted); font-size: .92rem; font-weight: 650; text-decoration: none; }
.site-nav a:hover { background: var(--muted-surface); color: var(--foreground); }
.theme-toggle { display: inline-flex; width: 2.75rem; height: 2.75rem; flex: 0 0 2.75rem; align-items: center; justify-content: center; padding: 0; border: 1px solid var(--border); border-radius: 50%; background: var(--card); cursor: pointer; }
.theme-toggle:hover { background: var(--muted-surface); }
.theme-toggle svg { width: 1.1rem; height: 1.1rem; }
:root[data-theme="light"] .sun-icon, :root[data-theme="dark"] .moon-icon { display: none; }

.hero { display: grid; min-height: calc(100vh - 4.75rem); grid-template-columns: minmax(0, .9fr) minmax(28rem, 1.1fr); align-items: center; gap: clamp(2.5rem, 6vw, 5.5rem); padding-block: clamp(4rem, 9vw, 7rem); }
.eyebrow { margin: 0 0 .75rem; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 11ch; margin: 0; font-size: clamp(3rem, 6.3vw, 5.75rem); line-height: .98; letter-spacing: -.055em; }
h1 span { color: var(--accent); }
.hero-description { max-width: 39rem; margin: 1.5rem 0 0; color: var(--muted); font-size: clamp(1.05rem, 1.5vw, 1.22rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button { display: inline-flex; min-height: 3rem; align-items: center; justify-content: center; padding: .72rem 1.15rem; border: 1px solid transparent; border-radius: .75rem; font-weight: 750; text-decoration: none; transition: transform .16s, background .16s, border-color .16s; }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--accent); color: var(--accent-foreground); }
.button-primary:hover { background: var(--accent-hover); }
.button-secondary { border-color: var(--border); background: var(--card); }
.button-secondary:hover { background: var(--muted-surface); }
.hero-facts { display: flex; flex-wrap: wrap; gap: .75rem 1.1rem; margin: 1.75rem 0 0; padding: 0; color: var(--muted); font-size: .9rem; font-weight: 650; list-style: none; }
.hero-facts li { display: inline-flex; align-items: center; gap: .35rem; }
.hero-facts svg { width: 1rem; height: 1rem; color: var(--success); stroke-width: 2.4; }
.hero-visual { position: relative; margin: 0; }
.hero-visual::before { position: absolute; z-index: -1; inset: 8% -4% -6% 8%; border-radius: 2rem; background: var(--accent-soft); content: ""; transform: rotate(2deg); }
.hero-visual img { width: 100%; border: 1px solid var(--border); border-radius: 1.4rem; box-shadow: var(--shadow); }

.section { padding-block: clamp(4.5rem, 8vw, 7.5rem); }
.section-muted { background: var(--muted-surface); }
.section-heading { max-width: 46rem; margin-bottom: 2.5rem; }
.section-heading h2, .privacy-panel h2, .final-cta h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.08; letter-spacing: -.04em; }
.section-heading > p:last-child, .privacy-panel > div > p:last-child, .final-cta div > p:last-child { margin: 1rem 0 0; color: var(--muted); font-size: 1.05rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.feature-card { padding: 1.5rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.icon-box { display: inline-flex; width: 2.75rem; height: 2.75rem; align-items: center; justify-content: center; border-radius: .75rem; background: var(--accent-soft); color: var(--accent); }
.icon-box svg { width: 1.35rem; height: 1.35rem; }
.feature-card h3, .level-grid h3, .step-list h3 { margin: 1rem 0 .35rem; font-size: 1.05rem; }
.feature-card p, .level-grid p, .step-list p { margin: 0; color: var(--muted); font-size: .94rem; }

.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin: 0 0 3rem; padding: 0; list-style: none; }
.step-list li { display: flex; gap: 1rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.step-list li > span { display: inline-flex; width: 2.25rem; height: 2.25rem; flex: 0 0 2.25rem; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent); color: var(--accent-foreground); font-weight: 800; }
.step-list h3 { margin-top: .25rem; }
.preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.preview-card { overflow: hidden; margin: 0; border: 1px solid var(--border); border-radius: calc(var(--radius) + .25rem); background: var(--card); }
.preview-card figcaption { display: flex; flex-direction: column; gap: .15rem; padding: 1rem 1.15rem; border-bottom: 1px solid var(--border); }
.preview-card figcaption span { color: var(--muted); font-size: .9rem; }
.preview-card img { width: 100%; }

.level-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.level-grid article { position: relative; padding: 1.35rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.level-dot { display: block; width: .7rem; height: .7rem; border-radius: 50%; }
.level-dot.smart { background: #18794e; }.level-dot.light { background: #367ccf; }.level-dot.balanced { background: #c52230; }.level-dot.strong { background: #7f56d9; }
.level-grid h3 { margin-top: .75rem; }

.privacy-panel { display: grid; grid-template-columns: auto minmax(0, 1fr) minmax(16rem, .65fr); align-items: center; gap: 2rem; padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border)); border-radius: 1.35rem; background: var(--accent-soft); }
.privacy-icon { display: inline-flex; width: 4.5rem; height: 4.5rem; align-items: center; justify-content: center; border-radius: 1rem; background: var(--card); color: var(--accent); }
.privacy-icon svg { width: 2.1rem; height: 2.1rem; }
.privacy-panel ul { margin: 0; padding-left: 1.2rem; }
.privacy-panel li + li { margin-top: .45rem; }

.faq .section-heading { margin-bottom: 1.5rem; }
.faq-list { display: grid; gap: .75rem; }
.faq-list details { border: 1px solid var(--border); border-radius: .85rem; background: var(--card); }
.faq-list summary { min-height: 3.5rem; padding: 1rem 3rem 1rem 1.1rem; font-weight: 750; cursor: pointer; }
.faq-list details p { margin: 0; padding: 0 1.1rem 1.1rem; color: var(--muted); }

.final-cta { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 1.5rem; margin-bottom: 5rem; padding: 2rem; border: 1px solid var(--border); border-radius: 1.25rem; background: var(--card); box-shadow: var(--shadow); }
.final-cta img { width: 4.5rem; height: 4.5rem; }
.final-cta h2 { font-size: clamp(1.65rem, 3vw, 2.4rem); }
.site-footer { border-top: 1px solid var(--border); color: var(--muted); }
.footer-inner { display: flex; min-height: 5rem; align-items: center; justify-content: space-between; gap: 1rem; font-size: .9rem; }
.footer-inner span:first-child { color: var(--foreground); font-weight: 750; }

a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--ring); outline-offset: 3px; }

@media (max-width: 900px) {
  .site-nav { display: none; }
  .theme-toggle { margin-left: auto; }
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  h1, .hero-description { margin-inline: auto; }
  .hero-actions, .hero-facts { justify-content: center; }
  .hero-visual { width: min(100%, 43rem); margin-inline: auto; }
  .feature-grid, .step-list { grid-template-columns: 1fr; }
  .level-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .privacy-panel { grid-template-columns: auto 1fr; }
  .privacy-panel ul { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .header-inner { min-height: 4.25rem; }
  .brand span { font-size: .92rem; }
  .hero { padding-block: 3.5rem 4.5rem; }
  h1 { font-size: clamp(2.65rem, 14vw, 4rem); }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-facts { align-items: center; flex-direction: column; }
  .preview-grid, .level-grid { grid-template-columns: 1fr; }
  .privacy-panel { grid-template-columns: 1fr; text-align: left; }
  .privacy-panel ul { grid-column: auto; }
  .final-cta { grid-template-columns: 1fr; text-align: center; }
  .final-cta img { margin-inline: auto; }
  .footer-inner { padding-block: 1.25rem; align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}