html {
  --color-background: #f7f7f5;
  --color-surface: #ffffff;
  --color-surface-muted: #eef1f6;
  --color-border: #d8dde4;
  --color-text: #131a28;
  --color-muted: #5b6675;
  --color-accent: #214ef3;
  --color-accent-soft: #ecf0ff;
  --color-overlay: rgba(10, 13, 25, 0.55);
  --shadow-elevated: 0 18px 40px rgba(15, 22, 42, 0.08);
  --radius-large: 28px;
  --radius-medium: 18px;
  --radius-small: 10px;
  --max-width: 1120px;
  --transition-theme: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html[data-theme="dark"] {
  --color-background: #06080f;
  --color-surface: #0c111d;
  --color-surface-muted: #151c2b;
  --color-border: rgba(108, 126, 170, 0.3);
  --color-text: #f0f3ff;
  --color-muted: #9aa7c2;
  --color-accent: #5b7bff;
  --color-accent-soft: rgba(91, 123, 255, 0.16);
  --color-overlay: rgba(4, 6, 12, 0.65);
  --shadow-elevated: 0 18px 40px rgba(6, 10, 22, 0.45);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]),
  html[data-theme=""] {
    --color-background: #06080f;
    --color-surface: #0c111d;
    --color-surface-muted: #151c2b;
    --color-border: rgba(108, 126, 170, 0.3);
    --color-text: #f0f3ff;
    --color-muted: #9aa7c2;
    --color-accent: #5b7bff;
    --color-accent-soft: rgba(91, 123, 255, 0.16);
    --color-overlay: rgba(4, 6, 12, 0.65);
    --shadow-elevated: 0 18px 40px rgba(6, 10, 22, 0.45);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  transition: var(--transition-theme);
}

img,
video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
}

a:hover,
a:focus {
  color: var(--color-accent);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 247, 245, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-theme);
}

html[data-theme="dark"] .site-header {
  background: rgba(6, 8, 15, 0.88);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 600;
  letter-spacing: 0.035em;
  text-transform: uppercase;
  font-size: 0.95rem;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.primary-nav {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-checkbox {
  display: none;
}

.nav-toggle {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 500;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
  font-weight: 500;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-theme);
}

.theme-toggle:hover,
.theme-toggle:focus {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.theme-toggle span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

.nav-links a {
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
}

.nav-links a.is-current,
.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.site-main {
  overflow: hidden;
}

.page-section {
  padding: clamp(60px, 12vw, 120px) 0;
}

.section-shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

.section-intro {
  max-width: 700px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  line-height: 1.2;
  margin: 0 0 18px;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin: 0;
}

.hero {
  position: relative;
  min-height: clamp(420px, 70vh, 720px);
  display: grid;
  place-items: center;
  text-align: center;
  color: #ffffff;
  overflow: hidden;
}

.hero video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero::before {
  inset: 0;
  background: var(--color-overlay);
}

.hero::after {
  display: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 0 28px;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.hero-content p {
  font-size: clamp(1rem, 3vw, 1.25rem);
  margin: 0 0 32px;
  color: rgba(255, 255, 255, 0.88);
}

.actions {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0.85em 1.9em;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button-primary {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: var(--shadow-elevated);
}

.button-primary:hover,
.button-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(33, 78, 243, 0.25);
}

.button-secondary {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.button-secondary:hover,
.button-secondary:focus {
  background: var(--color-accent-soft);
}

.split-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: clamp(32px, 6vw, 72px);
}

.split-media {
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
}

.split-content p {
  margin: 0 0 18px;
  color: var(--color-muted);
}

.surface-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  padding: clamp(32px, 5vw, 48px);
  box-shadow: var(--shadow-elevated);
  transition: var(--transition-theme);
}

.surface-card ul,
.surface-card ol {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 10px;
  color: var(--color-muted);
}

.surface-card li {
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-border);
  padding: 28px;
  transition: var(--transition-theme);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

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

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.metric {
  background: var(--color-surface);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-border);
  padding: 26px;
  text-align: center;
  transition: var(--transition-theme);
}

.metric strong {
  display: block;
  font-size: 2rem;
  margin-bottom: 10px;
}

.metric span {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--color-muted);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  align-items: center;
}

.logo-card {
  background: var(--color-surface);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-border);
  padding: 28px;
  display: grid;
  place-items: center;
  transition: var(--transition-theme);
}

.blog-preview {
  background: var(--color-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--color-border);
  padding: clamp(32px, 6vw, 52px);
  box-shadow: var(--shadow-elevated);
  max-width: 720px;
  margin: 0 auto;
  transition: var(--transition-theme);
}

.blog-preview h3 {
  margin: 0 0 12px;
}

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

.site-footer {
  background: #101623;
  color: rgba(255, 255, 255, 0.78);
  padding: 72px 0 60px;
  transition: var(--transition-theme);
}

html[data-theme="dark"] .site-footer {
  background: #03050a;
  color: rgba(224, 230, 255, 0.78);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  gap: 24px;
}

.footer-meta {
  display: grid;
  gap: 12px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.62);
}

.footer-meta span {
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

.footer-note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.team-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-theme);
}

.team-card img {
  height: 240px;
  object-fit: cover;
}

.team-card .team-copy {
  padding: 24px;
}

.team-card h3 {
  margin: 0 0 6px;
  font-size: 1.25rem;
}

.team-card span {
  color: var(--color-muted);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 16px;
}

.timeline {
  border-left: 2px solid var(--color-border);
  margin-left: 12px;
  padding-left: 28px;
  display: grid;
  gap: 28px;
}

.timeline-item {
  position: relative;
  padding-left: 18px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -38px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(33, 78, 243, 0.18);
}

.timeline-item strong {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  margin-bottom: 8px;
  color: var(--color-muted);
}

.timeline-item h3 {
  margin: 0 0 10px;
}

.article-shell {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 28px;
}

.article-shell h1,
.article-shell h2,
.article-shell h3 {
  margin-top: 48px;
  margin-bottom: 16px;
}

.article-shell h1:first-child {
  margin-top: 0;
}

.article-shell p,
.article-shell li {
  color: var(--color-muted);
}

.article-shell blockquote {
  margin: 32px 0;
  padding: 24px 28px;
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: var(--radius-medium);
  color: var(--color-text);
  font-style: italic;
}

.chip-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.chip {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-muted);
}

.author-card {
  display: flex;
  gap: 24px;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  padding: 28px;
  margin-top: 48px;
}

.author-card img {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
}

.contact-layout {
  display: grid;
  gap: clamp(32px, 6vw, 60px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-card,
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  padding: clamp(32px, 5vw, 48px);
  box-shadow: var(--shadow-elevated);
  transition: var(--transition-theme);
}

.contact-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 12px;
}

.contact-card li strong {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.social-links {
  display: flex;
  gap: 14px;
}

.social-links a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: grid;
  place-items: center;
  color: var(--color-muted);
}

.social-links a:hover,
.social-links a:focus {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.form-grid {
  display: grid;
  gap: 18px;
}

.label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-small);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(33, 78, 243, 0.12);
}

.textarea {
  resize: vertical;
  min-height: 160px;
}

.form-notice {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.job-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.job-card {
  background: var(--color-surface);
  border-radius: var(--radius-medium);
  border: 1px solid var(--color-border);
  padding: 28px;
  display: grid;
  gap: 18px;
}

.job-card strong {
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--color-muted);
}

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

.faq-list {
  display: grid;
  gap: 16px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  padding: 18px 24px;
  transition: var(--transition-theme);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq-item summary::marker {
  display: none;
}

.faq-item[open] summary {
  color: var(--color-accent);
}

.faq-item p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.notice {
  background: var(--color-accent-soft);
  border-radius: var(--radius-medium);
  border: 1px solid rgba(33, 78, 243, 0.2);
  padding: 18px 24px;
  color: var(--color-text);
  transition: var(--transition-theme);
}

@media (max-width: 1024px) {
  .header-inner {
    padding: 18px 24px;
  }

  .split-layout {
    grid-template-columns: 1fr;
  }

  .split-media {
    order: -1;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .author-card {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 780px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 16px);
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--color-surface);
    padding: 20px 24px;
    border-radius: var(--radius-medium);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-elevated);
    display: none;
    min-width: 220px;
  }

  .nav-checkbox:checked ~ .nav-links {
    display: flex;
  }

  .header-inner {
    padding: 16px 20px;
  }

  .theme-toggle {
    width: 100%;
    justify-content: center;
  }

  .header-actions {
    gap: 12px;
  }

  .page-section {
    padding: clamp(48px, 18vw, 88px) 0;
  }

  .hero-content {
    padding: 0 20px;
  }

  .footer-inner {
    padding: 0 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}