:root {
  /* Brand Tokens */
  --color-primary: #0A4D68;
  --color-secondary: #088395;
  --color-accent: #05BFDB;
  --color-neutral-dark: #0F172A;
  --color-neutral-light: #F8FAFC;
  --color-white: #FFFFFF;

  /* Typography */
  --font-heading: 'Sora', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-weight-regular: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --type-h1-desktop: 56px;
  --type-h1-mobile: 36px;
  --type-h1-line-height: 1.15;

  --type-h2-desktop: 40px;
  --type-h2-mobile: 28px;
  --type-h2-line-height: 1.2;

  --type-h3-desktop: 24px;
  --type-h3-mobile: 20px;
  --type-h3-line-height: 1.25;

  --type-body-desktop: 16px;
  --type-body-mobile: 15px;
  --type-body-line-height: 1.65;

  --type-small-desktop: 14px;
  --type-small-mobile: 13px;
  --type-small-line-height: 1.5;

  /* Spacing */
  --space-base: 8px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --space-16: 128px;

  --container-max-width: 1200px;
  --section-padding-desktop: 96px;
  --section-padding-mobile: 56px;

  /* UI Tokens */
  --card-radius: 16px;
  --card-padding: 32px;
  --card-border: 1px solid rgba(10, 77, 104, 0.12);
  --card-shadow: 0 4px 20px -2px rgba(10, 77, 104, 0.08);

  --btn-radius: 9999px;
  --btn-padding-y: 14px;
  --btn-padding-x: 28px;

  /* Header Transitions */
  --header-height: 84px;
  --header-height-scrolled: 64px;
}

/* Base resets & typography foundation */
html {
  scroll-behavior: smooth;
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-neutral-light);
  color: var(--color-neutral-dark);
  font-family: var(--font-body);
  font-size: var(--type-body-desktop);
  line-height: var(--type-body-line-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scroll-aware Header Behavior */
.site-header {
  transition: padding 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
  padding-top: 24px;
  padding-bottom: 24px;
}

.site-header.is-scrolled {
  padding-top: 14px;
  padding-bottom: 14px;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
}

/* Mobile Nav & Toggle Animation */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-dark);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 767px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    background-color: var(--color-neutral-light);
    border-bottom: 1px solid rgba(10, 77, 104, 0.12);
    box-shadow: 0 12px 24px -4px rgba(15, 23, 42, 0.08);
    padding: 24px;
  }

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

  .site-nav .nav-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    list-style: none;
    margin: 0 0 20px 0;
    padding: 0;
  }
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    align-items: center;
    position: static;
    box-shadow: none;
    padding: 0;
    border: none;
    background: transparent;
  }

  .site-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
}

/* Nav Link States */
.nav-link {
  transition: color 0.2s ease;
}

.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 600;
  position: relative;
}

@media (min-width: 768px) {
  .nav-link.is-active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    border-radius: 1px;
  }
}

/* FAQ Accordion */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease, padding 0.35s ease;
  padding-top: 0;
  padding-bottom: 0;
}

.faq-item.is-open .faq-answer {
  max-height: 600px;
  opacity: 1;
  padding-top: 16px;
  padding-bottom: 8px;
}

.faq-icon {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s ease;
  margin-left: auto;
  flex-shrink: 0;
}

.faq-item.is-open .faq-icon {
  transform: rotate(-135deg);
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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