*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --red: #E03E3E;
  --red-soft: #fdf0f0;
  --text: #1a1a1a;
  --text-secondary: #555;
  --bg: #fff;
  --bg-alt: #fafafa;
  --border: #e8e8e8;
  --radius: 12px;
  --max-w: 860px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--text);
  font-weight: 700; font-size: 18px;
}
.nav-brand img { width: 32px; height: 32px; border-radius: 7px; }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a {
  text-decoration: none; color: var(--text-secondary);
  font-size: 15px; font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }

/* mobile menu */
.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle svg { width: 24px; height: 24px; }

@media (max-width: 600px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 56px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: 16px 24px; gap: 16px;
  }
  .nav-links.open { display: flex; }
}

/* ---- HERO ---- */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 72px 24px 48px;
  text-align: center;
}
.hero-icon {
  width: 120px; height: 120px; border-radius: 26px;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 40px; font-weight: 700; letter-spacing: -.02em;
  line-height: 1.2; margin-bottom: 16px;
}
.hero h1 em { font-style: normal; color: var(--red); }
.hero p {
  font-size: 19px; color: var(--text-secondary);
  max-width: 520px; margin: 0 auto 32px;
}
.cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--text); color: #fff;
  padding: 13px 28px; border-radius: 10px;
  text-decoration: none; font-weight: 600; font-size: 16px;
  transition: opacity .15s;
}
.cta:hover { opacity: .85; }
.cta svg { width: 20px; height: 20px; }

/* ---- FEATURES ---- */
.features {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 56px;
}
.features h2 {
  text-align: center; font-size: 28px; margin-bottom: 36px;
  font-weight: 700; letter-spacing: -.01em;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-card h3 { font-size: 16px; margin-bottom: 6px; }
.feature-card p { font-size: 15px; color: var(--text-secondary); }

/* ---- SCREENSHOTS ---- */
.screenshots {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 24px 64px;
}
.screenshots h2 {
  text-align: center; font-size: 28px; margin-bottom: 32px;
  font-weight: 700; letter-spacing: -.01em;
}
.screenshot-gallery {
  display: flex; flex-direction: column; gap: 28px;
}
.screenshot-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(0,0,0,.06);
}
.screenshot-item img {
  width: 100%; display: block;
}
.screenshot-caption {
  padding: 14px 18px;
  font-size: 15px; color: var(--text-secondary);
  background: var(--bg-alt);
}

/* ---- CONTENT PAGES ---- */
.page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 24px 72px;
}
.page h1 {
  font-size: 32px; font-weight: 700; margin-bottom: 32px;
  letter-spacing: -.02em;
}
.page h2 {
  font-size: 20px; font-weight: 600; margin: 32px 0 10px;
}
.page p, .page li { color: var(--text-secondary); margin-bottom: 14px; }
.page ul { padding-left: 20px; }
.page a { color: var(--red); }

.faq-item { margin-bottom: 28px; }
.faq-item h2 { margin-top: 0; }

/* ---- FOOTER ---- */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 32px 24px;
  font-size: 14px;
  color: var(--text-secondary);
}
footer a { color: var(--text-secondary); }
footer .sep { margin: 0 10px; opacity: .4; }