:root {
  color-scheme: light dark;
  --color-primary: #4f46e5;
  --color-primary-accent: #4338ca;
  --color-secondary: #22d3ee;
  --color-text: #111827;
  --color-text-light: #6b7280;
  --color-surface: #ffffff;
  --color-surface-alt: #f3f4f6;
  --color-surface-dark: #111827;
  --color-surface-darker: #0b1120;
  --color-border: rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.15);
  --max-width: 1120px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-base: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --transition: 200ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background-color: var(--color-surface);
  color: var(--color-text);
  line-height: 1.7;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

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

section {
  position: relative;
}

.container {
  width: min(90%, var(--max-width));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 1000;
}

.skip-link:focus {
  left: 50%;
  top: 16px;
  width: auto;
  height: auto;
  padding: 0.75rem 1.5rem;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.brand__logo {
  width: 40px;
  height: 40px;
}

.brand__name {
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.nav {
  position: relative;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  font-weight: 500;
  color: var(--color-text-light);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link:focus,
.nav__link.is-active {
  color: var(--color-primary);
}

.nav__cta {
  padding: 0.65rem 1.2rem;
  background: rgba(79, 70, 229, 0.08);
  border-radius: 999px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #fff;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.nav__toggle-line {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition);
}

.hero {
  padding: 8rem 0 6rem;
  background: radial-gradient(circle at top right, rgba(34, 211, 238, 0.12), transparent 50%),
    linear-gradient(160deg, rgba(79, 70, 229, 0.08), transparent 60%);
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4rem;
  align-items: center;
}

.hero__content h1 {
  margin-top: 0.5rem;
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  line-height: 1.15;
}

.hero__content .lead {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.4);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
.btn--primary:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover,
.btn--ghost:focus {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-surface);
}

.btn--full {
  width: 100%;
}

.hero__stats {
  display: flex;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--color-text-light);
}

.hero__stats strong {
  display: block;
  font-size: 1.5rem;
  color: var(--color-text);
}

.hero__visual {
  position: relative;
  min-height: 360px;
}

.hero-card {
  position: absolute;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: 0 12px 32px rgba(79, 70, 229, 0.25);
}

.hero-card--primary {
  top: 0;
  right: 24%;
  background: linear-gradient(135deg, #4f46e5, #22d3ee);
}

.hero-card--secondary {
  bottom: 12%;
  left: 8%;
  background: linear-gradient(135deg, #111827, #312e81);
}

.hero-card__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.8;
}

.hero__orbit {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 1px dashed rgba(79, 70, 229, 0.3);
  animation: orbit 18s linear infinite;
}

.hero__planet,
.hero__satellite {
  position: absolute;
  border-radius: 50%;
}

.hero__planet {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  top: -18px;
  left: calc(50% - 18px);
}

.hero__satellite {
  width: 18px;
  height: 18px;
  background: var(--color-secondary);
  bottom: -9px;
  right: 22%;
}

.section {
  padding: 5rem 0;
}

.section--light {
  background: var(--color-surface-alt);
}

.section--dark {
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.12), transparent 60%),
    var(--color-surface-dark);
  color: #f9fafb;
}

.section__header {
  max-width: 640px;
  margin-bottom: 3rem;
}

.section__header--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.section__header h2 {
  margin: 0.75rem 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.section__subtitle {
  margin: 0;
  color: var(--color-text-light);
}

.grid {
  display: grid;
  gap: 2rem;
}

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

.card,
.blog-card,
.testimonial {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15, 23, 42, 0.05);
  transition: transform var(--transition), box-shadow var(--transition);
}

.section--light .card,
.section--light .blog-card,
.section--light .testimonial {
  background: #fff;
}

.section--dark .card,
.section--dark .blog-card,
.section--dark .testimonial {
  background: rgba(17, 24, 39, 0.65);
  border-color: rgba(255, 255, 255, 0.12);
}

.card:hover,
.blog-card:hover,
.testimonial:hover,
.portfolio__item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card h3 {
  margin-top: 0;
}

.card ul {
  padding-left: 1.15rem;
  color: var(--color-text-light);
}

.portfolio {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.portfolio__item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  display: grid;
  grid-template-rows: 180px 1fr;
}

.portfolio__cover {
  position: relative;
}

.portfolio__cover--alpha {
  background: linear-gradient(135deg, #312e81, #22d3ee);
}

.portfolio__cover--beta {
  background: linear-gradient(135deg, #047857, #10b981);
}

.portfolio__cover--gamma {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.portfolio__content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.badge {
  align-self: flex-start;
  background: rgba(79, 70, 229, 0.12);
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
}

.metrics {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metrics__item {
  background: rgba(15, 23, 42, 0.6);
  padding: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.testimonial blockquote {
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
  color: var(--color-text);
}

.testimonial__author {
  font-weight: 600;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  color: var(--color-text-light);
}

.section--light .testimonial blockquote {
  color: var(--color-text);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.timeline__step {
  background: var(--color-surface-alt);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  position: relative;
}

.timeline__number {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  display: block;
  margin-bottom: 1rem;
}

.blog-card__tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.blog-card__meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.faq {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
  cursor: pointer;
}

.section--dark .faq {
  background: rgba(17, 24, 39, 0.65);
  color: inherit;
}

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

.faq[open] {
  box-shadow: var(--shadow-lg);
}

.contact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
}

.contact__meta {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 1rem;
}

.contact__meta-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.7;
}

.contact__form {
  background: rgba(17, 24, 39, 0.6);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
}

.form-group {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 23, 42, 0.7);
  color: #f9fafb;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: 2px solid rgba(34, 211, 238, 0.5);
  border-color: rgba(34, 211, 238, 0.5);
}

.form-error {
  font-size: 0.8rem;
  color: #f87171;
  min-height: 1.1rem;
}

.form-success {
  font-size: 0.9rem;
  color: #34d399;
  min-height: 1.2rem;
  margin-top: 0.5rem;
}

.newsletter {
  display: grid;
  gap: 0.75rem;
}

.newsletter input {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.site-footer {
  background: #0b1120;
  color: rgba(226, 232, 240, 0.92);
  padding-top: 4rem;
}

.site-footer__grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.site-footer__title {
  margin-top: 0;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: rgba(226, 232, 240, 0.6);
}

.site-footer__list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.site-footer__text {
  max-width: 280px;
  color: rgba(226, 232, 240, 0.7);
}

.site-footer__meta {
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  margin-top: 3rem;
  padding: 1.5rem 0;
}

.site-footer__meta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.site-footer__policies {
  display: flex;
  gap: 1.5rem;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-surface);
  color: var(--color-text);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--color-border);
}

.toast__close {
  border: none;
  background: none;
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 400ms ease, transform 500ms ease;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes orbit {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 960px) {
  .hero__grid,
  .grid--3,
  .portfolio,
  .metrics,
  .timeline,
  .contact,
  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav__menu {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    background: #fff;
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    min-width: 220px;
    transform: scale(0.9);
    transform-origin: top right;
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav__menu.is-open {
    transform: scale(1);
    opacity: 1;
    visibility: visible;
  }

  .nav__toggle {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  .hero {
    padding-top: 6rem;
  }

  .hero__grid,
  .portfolio,
  .metrics,
  .timeline,
  .contact,
  .grid--3,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .section__header--split {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__stats {
    flex-wrap: wrap;
  }

  .site-header {
    position: sticky;
  }

  .contact__form {
    padding: 2rem;
  }

  .site-footer__meta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@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;
  }
}