:root {
  --bg: #ffffff;
  --text: #111218;
  --muted: #5f6476;
  --text-soft: #2f3447;
  --accent: #5b5ceb;
  --accent-dark: #4748cf;
  --accent-soft: #f3f3ff;
  --accent-contrast: #ffffff;
  --surface: #fafbff;
  --surface-elevated: #ffffff;
  --border: #e8e9f2;
  --border-strong: #cfd3e8;
  --header-bg: rgba(255, 255, 255, 0.88);
  --header-border: rgba(232, 233, 242, 0.9);
  --featured-border: #dfe1ff;
  --featured-grad-start: #fafaff;
  --featured-grad-end: #f5f6ff;
  --featured-text: #34394d;
  --featured-list-text: #2e3345;
  --chip-text: #23263c;
  --chip-border-hover: #ced2ff;
  --footer-bg: #111218;
  --footer-text: #f6f7ff;
  --footer-muted: #c6cae7;
  --footer-copyright: #9da3cb;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-sm: 0 6px 24px rgba(17, 18, 24, 0.06);
  --shadow-md: 0 16px 42px rgba(17, 18, 24, 0.1);
  --accent-shadow: 0 8px 20px rgba(91, 92, 235, 0.27);
  --accent-shadow-strong: 0 10px 25px rgba(91, 92, 235, 0.3);
}

:root[data-theme="dark"] {
  --bg: #0b1020;
  --text: #edf1ff;
  --muted: #a8b1cc;
  --text-soft: #d3daf5;
  --accent: #8d92ff;
  --accent-dark: #7c81f4;
  --accent-soft: #1a2242;
  --accent-contrast: #f7f8ff;
  --surface: #11182c;
  --surface-elevated: #151d33;
  --border: #28324f;
  --border-strong: #3a4566;
  --header-bg: rgba(11, 16, 32, 0.82);
  --header-border: rgba(40, 50, 79, 0.88);
  --featured-border: #32405f;
  --featured-grad-start: #141d38;
  --featured-grad-end: #10192e;
  --featured-text: #c4cdef;
  --featured-list-text: #d8def7;
  --chip-text: #dbe2ff;
  --chip-border-hover: #4f5d86;
  --footer-bg: #070b18;
  --footer-text: #f0f3ff;
  --footer-muted: #aeb8dd;
  --footer-copyright: #8a95bf;
  --shadow-sm: 0 8px 24px rgba(1, 5, 14, 0.36);
  --shadow-md: 0 20px 52px rgba(1, 5, 14, 0.5);
  --accent-shadow: 0 10px 24px rgba(141, 146, 255, 0.28);
  --accent-shadow-strong: 0 12px 28px rgba(141, 146, 255, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  transition: background-color 0.35s ease, color 0.35s ease;
}

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

.container {
  width: min(1100px, calc(100% - 3rem));
  margin: 0 auto;
}

.section {
  padding: clamp(3.5rem, 7vw, 6.5rem) 0;
}

.site-header,
.site-nav .nav-cta,
.btn,
.theme-toggle,
.credibility-grid,
.card,
.featured-inner,
.about-links,
.about-links a,
.footer-cta {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--header-border);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--text);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.52rem 0.82rem;
  background: var(--surface-elevated);
  color: var(--text);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.22s ease, border-color 0.22s ease, color 0.22s ease,
    box-shadow 0.22s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle-icon {
  font-size: 0.92rem;
  line-height: 1;
}

.site-nav .nav-cta {
  color: var(--accent-contrast);
  background: var(--accent);
  border-radius: 999px;
  padding: 0.62rem 1rem;
  font-size: 0.92rem;
  line-height: 1;
  box-shadow: var(--accent-shadow);
}

.site-nav .nav-cta:hover {
  color: var(--accent-contrast);
  background: var(--accent-dark);
}

.hero {
  padding-top: clamp(4.2rem, 11vw, 7.8rem);
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.3rem, 6.4vw, 4.8rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

h3 {
  font-size: 1.24rem;
  margin-bottom: 0.65rem;
}

.hero-subtitle {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(1.02rem, 2.2vw, 1.3rem);
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: 999px;
  padding: 0.85rem 1.3rem;
  font-weight: 600;
  font-size: 0.97rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: var(--accent-shadow-strong);
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface-elevated);
}

.btn-secondary:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.credibility {
  padding-top: 0.3rem;
}

.credibility-grid {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
}

.cred-item {
  margin: 0;
  padding: 1.15rem 1.1rem;
  text-align: center;
  font-weight: 600;
  color: var(--text-soft);
}

.cred-item + .cred-item {
  border-left: 1px solid var(--border);
}

.section-head {
  margin-bottom: 1.6rem;
}

.section-head h2 {
  max-width: 24ch;
}

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

.card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-sm);
}

.card p {
  margin: 0;
  color: var(--muted);
}

.featured {
  padding-top: clamp(2.8rem, 6vw, 5rem);
}

.featured-inner {
  border: 1px solid var(--featured-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--featured-grad-start) 0%, var(--featured-grad-end) 100%);
  box-shadow: var(--shadow-md);
  padding: clamp(1.7rem, 3.8vw, 2.8rem);
}

.featured-inner p {
  color: var(--featured-text);
}

.featured-list {
  margin: 1.1rem 0 1.7rem;
  padding-left: 1.1rem;
}

.featured-list li {
  margin-bottom: 0.35rem;
  color: var(--featured-list-text);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.2rem;
  align-items: start;
}

.about p {
  color: var(--muted);
}

.about-links {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  box-shadow: var(--shadow-sm);
  padding: 1.1rem;
  display: grid;
  gap: 0.65rem;
}

.about-links a {
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--chip-text);
  padding: 0.7rem 0.8rem;
  font-weight: 600;
}

.about-links a:hover {
  border-color: var(--chip-border-hover);
}

.footer-cta {
  background: var(--footer-bg);
  color: var(--footer-text);
  margin-top: 2rem;
}

.footer-cta-inner {
  max-width: 740px;
}

.footer-cta h2 {
  margin-bottom: 0.8rem;
}

.footer-cta p {
  margin-top: 0;
  color: var(--footer-muted);
}

.footer-cta .btn {
  margin-top: 0.7rem;
}

.copyright {
  margin-top: 1.3rem;
  font-size: 0.92rem;
  color: var(--footer-copyright);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 980px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(1100px, calc(100% - 2rem));
  }

  .nav-wrap {
    min-height: auto;
    padding: 0.9rem 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    justify-content: flex-start;
    gap: 0.9rem;
  }

  .site-nav .nav-cta {
    margin-left: auto;
  }

  .credibility-grid {
    grid-template-columns: 1fr;
  }

  .cred-item + .cred-item {
    border-left: 0;
    border-top: 1px solid var(--border);
  }
}

@media (max-width: 560px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}