:root {
  color-scheme: dark;
  --background: #060708;
  --surface: rgba(17, 20, 23, 0.72);
  --surface-strong: rgba(24, 28, 32, 0.82);
  --border: rgba(146, 153, 159, 0.18);
  --primary: #b8ff2c;
  --primary-soft: rgba(184, 255, 44, 0.12);
  --text: #f4f7f8;
  --secondary: #92999f;
  --blue: #4c6fff;
  --radius: 24px;
  --content: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% -20%, rgba(184, 255, 44, 0.08), transparent 34%),
    var(--background);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.09;
  pointer-events: none;
}

.ambient-one {
  top: 18%;
  left: -260px;
  background: var(--primary);
}

.ambient-two {
  right: -280px;
  bottom: 8%;
  background: var(--blue);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: 0 max(24px, calc((100vw - var(--content)) / 2));
  border-bottom: 1px solid var(--border);
  background: rgba(6, 7, 8, 0.72);
  backdrop-filter: blur(22px) saturate(135%);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-size: 15px;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand strong {
  color: var(--primary);
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 38px;
  place-items: center;
  filter: drop-shadow(0 0 10px rgba(184, 255, 44, 0.42));
}

.brand-mark svg {
  width: 22px;
  fill: var(--primary);
}

.header-link {
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--secondary);
  font-size: 13px;
  text-decoration: none;
  transition: 180ms ease;
}

.header-link:hover {
  border-color: rgba(184, 255, 44, 0.45);
  color: var(--primary);
}

main {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.hero {
  max-width: 850px;
  padding: 112px 0 88px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--secondary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.eyebrow span {
  width: 26px;
  height: 1px;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(48px, 8vw, 92px);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

h1 em {
  color: var(--primary);
  font-style: normal;
  text-shadow: 0 0 42px rgba(184, 255, 44, 0.2);
}

.hero-copy {
  max-width: 650px;
  margin: 30px 0 24px;
  color: var(--secondary);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.55;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  color: #697077;
  font-size: 12px;
}

.meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--primary);
}

.glass-card {
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(24, 28, 32, 0.76), rgba(10, 12, 14, 0.6));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.2), inset 0 1px rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 86px;
}

.principle {
  position: relative;
  min-height: 220px;
  padding: 26px;
  overflow: hidden;
  border-radius: var(--radius);
  transition: transform 220ms ease, border-color 220ms ease;
}

.principle:hover {
  transform: translateY(-3px);
  border-color: rgba(184, 255, 44, 0.26);
}

.principle .number {
  position: absolute;
  top: 22px;
  right: 24px;
  color: #4c5257;
  font-size: 11px;
  letter-spacing: 0.1em;
}

.principle .icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin-bottom: 34px;
  place-items: center;
  border: 1px solid rgba(184, 255, 44, 0.22);
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 24px;
}

.principle h2,
.policy h2 {
  margin: 0;
  color: var(--text);
  letter-spacing: -0.035em;
}

.principle h2 {
  font-size: 20px;
}

.principle p {
  margin: 7px 0 0;
  color: var(--secondary);
  font-size: 14px;
}

.content-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  align-items: start;
  gap: 24px;
  padding-bottom: 100px;
}

.toc {
  position: sticky;
  top: 98px;
  padding: 22px;
  border-radius: 20px;
}

.toc > p {
  margin: 0 0 14px;
  color: #596067;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.toc nav {
  display: flex;
  flex-direction: column;
}

.toc a {
  padding: 7px 0;
  color: var(--secondary);
  font-size: 12px;
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}

.toc a:hover {
  color: var(--primary);
  transform: translateX(3px);
}

.policy {
  padding: 16px 54px;
  border-radius: 30px;
}

.policy section {
  position: relative;
  padding: 54px 0;
  border-bottom: 1px solid var(--border);
}

.policy section:last-child {
  border-bottom: 0;
}

.section-index {
  display: block;
  margin-bottom: 7px;
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.policy h2 {
  margin-bottom: 22px;
  font-size: clamp(25px, 3vw, 34px);
}

.policy h3 {
  margin: 0 0 7px;
  font-size: 15px;
}

.policy p,
.policy li {
  color: var(--secondary);
}

.policy p {
  margin: 0 0 18px;
}

.policy strong {
  color: #d9dddf;
  font-weight: 600;
}

.policy a:not(.contact-button) {
  color: var(--text);
  text-decoration-color: rgba(184, 255, 44, 0.5);
  text-underline-offset: 4px;
}

.policy ul {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.policy li {
  position: relative;
  margin: 9px 0;
  padding-left: 22px;
}

.policy li::before {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--primary);
  content: "✓";
  font-size: 12px;
  font-weight: 700;
}

.notice {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  padding: 18px;
  border: 1px solid rgba(184, 255, 44, 0.18);
  border-radius: 16px;
  background: var(--primary-soft);
}

.notice span {
  color: var(--primary);
}

.notice p {
  margin: 0;
  color: #c4c9cc;
  font-size: 13px;
}

.permission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.permission-grid > div {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.018);
}

.permission-grid p {
  margin: 0;
  font-size: 13px;
}

.contact-section {
  text-align: center;
}

.contact-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 28px;
  padding: 16px 20px;
  border-radius: 14px;
  background: var(--primary);
  color: #070907;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.contact-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(184, 255, 44, 0.16);
}

footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 28px;
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 34px 0 46px;
  border-top: 1px solid var(--border);
  color: #5f666c;
  font-size: 11px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #a5aaae;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.mini-bolt {
  color: var(--primary);
  font-size: 20px;
}

footer p {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

footer a {
  text-decoration: none;
}

@media (max-width: 850px) {
  .hero {
    padding: 80px 0 64px;
  }

  .principles {
    grid-template-columns: 1fr;
    margin-bottom: 54px;
  }

  .principle {
    min-height: 185px;
  }

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

  .toc {
    position: static;
  }

  .toc nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
  }
}

@media (max-width: 600px) {
  .site-header {
    height: 68px;
    padding: 0 18px;
  }

  .header-link {
    display: none;
  }

  main,
  footer {
    width: min(calc(100% - 28px), var(--content));
  }

  .hero {
    padding: 64px 4px 52px;
  }

  .hero-copy {
    margin-top: 24px;
  }

  .principle {
    padding: 22px;
  }

  .toc nav {
    grid-template-columns: 1fr;
  }

  .policy {
    padding: 8px 22px;
    border-radius: 24px;
  }

  .policy section {
    padding: 42px 0;
  }

  .permission-grid {
    grid-template-columns: 1fr;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  body {
    background: white;
    color: #111;
  }

  .site-header,
  .ambient,
  .principles,
  .toc,
  footer {
    display: none;
  }

  main {
    width: 100%;
  }

  .hero {
    padding: 20px 0;
  }

  h1,
  h1 em,
  .policy h2,
  .policy strong {
    color: #111;
    text-shadow: none;
  }

  .policy {
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .policy p,
  .policy li {
    color: #333;
  }
}