:root {
  --flai-navy: #194185;
  --flai-orange: #ff6c11;
  --flai-blue: #1570ef;
  --ink: #101828;
  --ink-soft: #344054;
  --muted: #667085;
  --line: #d0d5dd;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --bg-deep: #e8f1fc;
  --bg-mid: #f4f7fb;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(25, 65, 133, 0.08);
  --font-display: "Outfit", sans-serif;
  --font-body: "Source Sans 3", sans-serif;
  --shell: min(1080px, calc(100% - 2.5rem));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background: var(--bg-mid);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--flai-blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--flai-navy);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  color: var(--flai-navy);
  background: rgba(21, 112, 239, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(255, 108, 17, 0.16), transparent 55%),
    radial-gradient(ellipse 70% 45% at 95% 5%, rgba(21, 112, 239, 0.18), transparent 50%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 38%, #eef3f9 100%);
}

.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(25, 65, 133, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 65, 133, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 70%);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(244, 247, 251, 0.82);
  border-bottom: 1px solid rgba(208, 213, 221, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.brand-logo,
.hero-logo {
  display: block;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(255, 108, 17, 0.28);
}

.brand-logo {
  width: 2.75rem;
  height: 2.75rem;
  flex-shrink: 0;
}

.hero-logo {
  width: 7rem;
  height: 7rem;
  margin-bottom: 1.25rem;
  animation: logo-in 0.8s ease both;
}

@keyframes logo-in {
  from {
    opacity: 0;
    transform: scale(0.88);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--flai-navy);
}

@media (min-width: 480px) {
  .brand-text {
    font-size: 1.55rem;
  }

  .hero-logo {
    width: 8rem;
    height: 8rem;
  }
}

.header-meta {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
}

.hero {
  padding: 3.5rem 0 2.25rem;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.hero.is-visible {
  opacity: 1;
  transform: none;
}

.hero-inner {
  max-width: 42rem;
}

.hero-kicker {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--flai-orange);
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.05em;
  color: var(--flai-navy);
}

.hero-lead {
  margin: 1.15rem 0 0;
  max-width: 34rem;
  font-size: 1.2rem;
  color: var(--ink-soft);
}

.hero-updated {
  margin: 1.35rem 0 0;
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  border-bottom: 2px solid rgba(255, 108, 17, 0.45);
  padding-bottom: 0.15rem;
}

.layout {
  display: grid;
  grid-template-columns: 15.5rem minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
  padding-bottom: 4rem;
}

.toc {
  position: sticky;
  top: 5.5rem;
  padding: 0.25rem 0;
}

.toc-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.toc a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.35;
  padding: 0.2rem 0;
  border-left: 2px solid transparent;
  padding-left: 0.7rem;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.toc a:hover {
  color: var(--flai-navy);
  border-left-color: var(--flai-orange);
  transform: translateX(2px);
}

.policy {
  background: var(--surface);
  border: 1px solid rgba(208, 213, 221, 0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  backdrop-filter: blur(8px);
}

.policy-section {
  padding: 1.35rem 0;
  border-top: 1px solid rgba(208, 213, 221, 0.75);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.policy-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.policy-section.is-visible {
  opacity: 1;
  transform: none;
}

.policy-section h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--flai-navy);
}

.policy-section p,
.policy-section li {
  color: var(--ink-soft);
}

.policy-section p {
  margin: 0 0 0.9rem;
}

.policy-section p:last-child,
.policy-section ul:last-child {
  margin-bottom: 0;
}

.policy-section ul {
  margin: 0 0 0.9rem;
  padding-left: 1.15rem;
}

.policy-section li + li {
  margin-top: 0.45rem;
}

.contact-list {
  list-style: none;
  padding-left: 0;
}

.contact-list li {
  padding: 0.35rem 0;
  border-bottom: 1px dashed rgba(208, 213, 221, 0.9);
}

.contact-list li:last-child {
  border-bottom: 0;
}

.site-footer {
  border-top: 1px solid rgba(208, 213, 221, 0.8);
  background: rgba(255, 255, 255, 0.55);
  padding: 1.6rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

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

.footer-note {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--flai-navy) !important;
}

@media (max-width: 860px) {
  :root {
    --shell: min(100% - 1.5rem, 1080px);
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .toc {
    position: static;
    display: flex;
    gap: 0.75rem 1rem;
    overflow-x: auto;
    padding-bottom: 0.35rem;
    -webkit-overflow-scrolling: touch;
  }

  .toc-title {
    display: none;
  }

  .toc ol {
    display: flex;
    gap: 0.35rem;
    width: max-content;
  }

  .toc a {
    white-space: nowrap;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.8rem;
    background: rgba(255, 255, 255, 0.7);
    font-size: 0.88rem;
  }

  .toc a:hover {
    transform: none;
    border-color: var(--flai-orange);
  }

  .hero {
    padding-top: 2.5rem;
  }

  .header-meta {
    display: none;
  }
}

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

  .hero,
  .policy-section,
  .hero-logo {
    opacity: 1;
    transform: none;
    transition: none;
    animation: none;
  }
}