:root {
  --color-bg: #0a122a;
  --color-bg-section: #0e1a35;
  --color-bg-card: #131f3f;
  --color-bg-dark: #07101f;
  --color-primary: #2a4a8a;
  --color-primary-mid: #3a5fa0;
  --color-primary-glow: #5b8cf7;
  --color-primary-dark: #1a3060;
  --color-text: #dbe1ff;
  --color-text-muted: #9aaad4;
  --color-text-dim: #6a7aaa;
  --color-border: #1e2d58;
  --color-nav-bg: #0a122a;
  --font-heading: Arial, Helvetica, sans-serif;
  --font-body: "Raleway", sans-serif;
  --max-width: 1400px;
  --section-pad-y: 80px;
  --section-pad-x: 40px;
  --radius-btn: 6px;
  --radius-card: 10px;
  --transition-base: 0.25s ease;
}
body[data-theme="light"] {
  --color-bg: #ffffff;
  --color-bg-section: #f5f5f5;
  --color-bg-card: #fbfbfb;
  --color-primary: #212121;
  --color-primary-mid: #3a3a3a;
  --color-primary-glow: #4d4d4d;
  --color-primary-dark: #111111;
  --color-text: #212121;
  --color-text-muted: #666666;
  --color-border: #e0e0e0;
  --color-nav-bg: #ffffff;
}

body[data-theme="readable"] {
  --color-bg: #0f1722;
  --color-bg-section: #16202d;
  --color-bg-card: #182332;
  --color-primary: #5e8fdb;
  --color-primary-mid: #72a2ee;
  --color-primary-glow: #7fb3ff;
  --color-primary-dark: #35598f;
  --color-text: #e8edf5;
  --color-text-muted: #b7c2d0;
  --color-border: #314255;
  --color-nav-bg: #111926;
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
}
body[data-theme="readable"] {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}
body[data-theme="readable"] h1 {
  font-size: 2em;
  line-height: 1.25;
}
body[data-theme="readable"] p,
body[data-theme="readable"] li,
body[data-theme="readable"] .page-header__meta,
body[data-theme="readable"] .footer__desc,
body[data-theme="readable"] .footer__contact-item,
body[data-theme="readable"] .footer__bottom p {
  max-width: 600px;
  letter-spacing: 0.5px;
}

body[data-theme="light"] .page-header__eyebrow,
body[data-theme="light"] .page-header__title,
body[data-theme="light"] .page-header__meta {
  color: #ffffff;
}
a { color: var(--color-primary-glow); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: var(--color-text); }

.nav {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--color-nav-bg);
  border-bottom: 1px solid var(--color-border);
}
.nav__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--section-pad-x);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo-placeholder {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-glow);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav__back {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.nav__back:hover { color: var(--color-text); }
.nav__back svg { flex-shrink: 0; }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-section);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color var(--transition-base), background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-primary-glow);
  background: var(--color-bg-card);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-header {
  position: relative;
  overflow: hidden;
  min-height: 45vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  padding: 48px var(--section-pad-x);
}
.page-header__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.page-header__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: brightness(0.35) contrast(1.15);
  background:
    radial-gradient(circle at top right, rgba(200, 71, 62, 0.22), transparent 25%),
    radial-gradient(circle at bottom left, rgba(141, 43, 40, 0.18), transparent 28%),
    linear-gradient(180deg, #1a1a1a 0%, #111111 100%);
}
.page-header__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,26,0.6);
  z-index: 1;
}
.page-header__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
}
.page-header__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary-glow);
  margin-bottom: 12px;
}
.page-header__title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: 16px;
}
.page-header__meta {
  font-size: 0.83rem;
  color: var(--color-text-muted);
}
.divider {
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  margin: 20px 0 0;
}

.legal-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px var(--section-pad-x) 80px;
}
.legal-content h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 28px 0 10px;
}
.legal-content p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.8;
}
.legal-content ul {
  margin: 0 0 16px 20px;
}
.legal-content ul li {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}
.legal-content .contact-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin: 16px 0 24px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}
.legal-content .contact-box strong {
  display: block;
  color: var(--color-text);
  font-size: 1rem;
  margin-bottom: 6px;
}

.footer {
  background: var(--color-nav-bg);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 24px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--section-pad-x);
  margin-bottom: 48px;
}
.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary-glow);
  margin-bottom: 12px;
}
.footer__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}
.footer__pillars {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 20px;
}
.footer__pillars li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
  cursor: default;
}
.footer__pillars li:hover { color: var(--color-text); }
.footer__pillars li svg {
  stroke: var(--color-primary-glow);
  flex-shrink: 0;
  transition: stroke var(--transition-base), transform .3s cubic-bezier(.34,1.56,.64,1);
}
.footer__pillars li:hover svg {
  stroke: var(--color-primary-glow);
  transform: scale(1.2);
}
.footer__social { display: flex; gap: 12px; }
.footer__social a {
  width: 36px;
  height: 36px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base), border-color var(--transition-base);
}
.footer__social a:hover { background: var(--color-primary); border-color: var(--color-primary); }
.footer__social a svg {
  stroke: var(--color-text-muted);
  transition: stroke var(--transition-base), transform .35s cubic-bezier(.34,1.56,.64,1);
}
.footer__social a:hover svg { stroke: #fff; transform: translateY(-2px) scale(1.15); }
.footer__col-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: 20px;
}
.footer__links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: 0.85rem; color: var(--color-text-muted); transition: color var(--transition-base); }
.footer__links a:hover { color: var(--color-text); }
.footer__contact-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; font-size: 0.85rem; color: var(--color-text-muted); }
.footer__contact-item a { color: var(--color-text-muted); transition: color var(--transition-base); }
.footer__contact-item a:hover { color: var(--color-text); }
.footer__bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px var(--section-pad-x) 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer__bottom p { font-size: 0.8rem; color: var(--color-text-muted); }
.footer__bottom-links { list-style: none; display: flex; gap: 20px; }
.footer__bottom-links a { font-size: 0.8rem; color: var(--color-text-muted); transition: color var(--transition-base); }
.footer__bottom-links a:hover { color: var(--color-text); }

#scrollTopBtn {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 0;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-heading);
  cursor: pointer;
  transition: color .2s, border-color .2s, transform .3s cubic-bezier(.34,1.56,.64,1);
  z-index: 400;
}
#scrollTopBtn:hover { color: var(--color-primary-glow); border-color: var(--color-primary-glow); transform: translateY(-4px); }

.legal-content ul.index {
  list-style: none;
  margin: 0 0 32px 0;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.legal-content ul.index li { margin: 0; }
.legal-content ul.index a { font-size: 0.88rem; color: var(--color-primary-glow); }
.legal-content ul.index a:hover { color: var(--color-text); }

.legal-content ul.m-elements {
  list-style: none;
  margin: 12px 0 16px 0;
  padding: 14px 18px;
  background: rgba(141,43,40,0.12);
  border: 1px solid rgba(200,71,62,0.2);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.legal-content ul.m-elements li { margin: 0; font-size: 0.88rem; }

.legal-content ul.glossary {
  list-style: none;
  margin: 0 0 16px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.legal-content ul.glossary li {
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  font-size: 0.88rem;
}

.legal-content .seal {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.legal-content .seal a { font-size: 0.8rem; }

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .legal-content { padding: 40px 20px 60px; }
  .page-header { padding: 36px 20px; }
  .nav__inner { padding: 0 20px; }
  .nav__actions { gap: 10px; }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .nav__inner { height: auto; min-height: 92px; padding-top: 20px; padding-bottom: 20px; align-items: flex-start; flex-wrap: wrap; }
  .nav__actions { width: 100%; justify-content: space-between; }
}