:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --bg-soft: #eef3f9;
  --surface: rgba(255, 255, 255, 0.68);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --surface-elevated: rgba(255, 255, 255, 0.82);
  --text: #0f172a;
  --text-muted: #52607a;
  --border: rgba(148, 163, 184, 0.22);
  --primary: #0ea5e9;
  --secondary: #22c55e;
  --accent: #8b5cf6;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
  --hero-grad-1: radial-gradient(circle at 18% 16%, rgba(14, 165, 233, 0.26), transparent 32%);
  --hero-grad-2: radial-gradient(circle at 82% 14%, rgba(139, 92, 246, 0.2), transparent 28%);
  --hero-grad-3: radial-gradient(circle at 54% 82%, rgba(34, 197, 94, 0.16), transparent 30%);
  --main-gradient: linear-gradient(135deg, #0ea5e9, #8b5cf6 55%, #22c55e);
  --nav-bg: rgba(255, 255, 255, 0.58);
  --page-width: min(1180px, calc(100% - 2rem));
}

body.dark {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0b1627;
  --surface: rgba(10, 18, 33, 0.62);
  --surface-strong: rgba(11, 22, 39, 0.88);
  --surface-elevated: rgba(12, 20, 36, 0.82);
  --text: #edf4ff;
  --text-muted: #9eb0cb;
  --border: rgba(148, 163, 184, 0.16);
  --primary: #38bdf8;
  --secondary: #4ade80;
  --accent: #a78bfa;
  --warning: #fbbf24;
  --danger: #f87171;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.38);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.26);
  --hero-grad-1: radial-gradient(circle at 18% 16%, rgba(56, 189, 248, 0.18), transparent 34%);
  --hero-grad-2: radial-gradient(circle at 82% 14%, rgba(167, 139, 250, 0.18), transparent 30%);
  --hero-grad-3: radial-gradient(circle at 54% 82%, rgba(74, 222, 128, 0.14), transparent 32%);
  --main-gradient: linear-gradient(135deg, #38bdf8, #a78bfa 55%, #4ade80);
  --nav-bg: rgba(8, 15, 27, 0.62);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family: "Poppins", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    var(--hero-grad-1),
    var(--hero-grad-2),
    var(--hero-grad-3),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
  transition: background 0.35s ease, color 0.35s ease;
}

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

img,
svg,
canvas {
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: var(--page-width);
  margin: 0 auto;
}

.site-shell {
  position: relative;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1200;
  padding: 1rem 0;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--nav-bg);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--main-gradient);
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.35);
  font-size: 0.95rem;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-copy small {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0;
}

.nav-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex: 1;
  flex-wrap: wrap;
}

.nav-link {
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.94rem;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
  background: var(--surface);
  transform: translateY(-1px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.menu-toggle,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-soft);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.theme-toggle .theme-icon-light,
.theme-toggle[aria-pressed="true"] .theme-icon-dark {
  display: inline;
}

.theme-toggle .theme-icon-dark,
.theme-toggle[aria-pressed="true"] .theme-icon-light {
  display: none;
}

.site-cta {
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 700;
  color: #fff;
  background: var(--main-gradient);
  box-shadow: 0 14px 30px rgba(56, 189, 248, 0.24);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--main-gradient);
  box-shadow: 0 0 18px rgba(14, 165, 233, 0.55);
}

.glass-card {
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  border-radius: 28px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.page-main {
  padding-bottom: 4rem;
}

.page-hero {
  padding: 1rem 0 1.5rem;
}

.page-hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
  align-items: center;
  padding: 1.75rem;
}

.page-hero-copy h1 {
  margin: 1rem 0 0.85rem;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.page-hero-copy p {
  margin: 0;
  max-width: 720px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.page-hero-side {
  display: grid;
  gap: 0.9rem;
}

.hero-note,
.tool-switch-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-soft);
}

.hero-note strong,
.tool-switch-link strong {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.98rem;
}

.hero-note span,
.tool-switch-link span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.tool-switch-link em {
  font-style: normal;
  font-weight: 700;
  color: var(--primary);
}

.site-footer {
  padding: 1rem 0 3rem;
}

.site-footer-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
}

.site-footer-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.footer-links a {
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .site-nav {
    position: relative;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-panel {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.75rem;
  }

  .site-nav.is-open .nav-panel {
    display: flex;
  }

  .nav-link {
    width: 100%;
    text-align: left;
  }

  .nav-actions {
    width: 100%;
    justify-content: space-between;
  }

  .page-hero-card,
  .site-footer-card {
    grid-template-columns: 1fr;
    display: grid;
  }
}

@media (max-width: 720px) {
  .site-header {
    padding: 0.75rem 0;
  }

  .page-hero-card {
    padding: 1.25rem;
  }

  .page-hero-copy h1 {
    font-size: clamp(1.9rem, 9vw, 2.8rem);
  }

  .site-cta {
    display: none;
  }
}