* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --ink: #172033;
  --muted: rgba(23, 32, 51, 0.64);
  --faint: rgba(23, 32, 51, 0.42);
  --surface: rgba(255, 255, 255, 0.58);
  --surface-strong: rgba(255, 255, 255, 0.82);
  --line: rgba(255, 255, 255, 0.74);
  --line-soft: rgba(23, 32, 51, 0.09);
  --blue: #1677ff;
  --cyan: #24d6d1;
  --shadow: rgba(40, 72, 120, 0.16);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: rgba(250, 252, 255, 0.96);
    --muted: rgba(235, 243, 255, 0.66);
    --faint: rgba(235, 243, 255, 0.42);
    --surface: rgba(12, 18, 30, 0.52);
    --surface-strong: rgba(22, 30, 46, 0.78);
    --line: rgba(255, 255, 255, 0.16);
    --line-soft: rgba(255, 255, 255, 0.08);
    --shadow: rgba(0, 0, 0, 0.38);
  }
}

html {
  min-width: 320px;
  background: #f8fbff;
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "SF Pro Text", "SF Pro Display", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background: linear-gradient(180deg, #f8fbff 0%, #eef6fb 48%, #f7f9fb 100%);
  line-height: 1.78;
  overflow-x: hidden;
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  z-index: -2;
  background:
    linear-gradient(120deg, rgba(36, 214, 209, 0.12), rgba(22, 119, 255, 0.08) 42%, rgba(255, 159, 122, 0.1) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0));
  filter: blur(42px) saturate(1.04);
  opacity: 0.52;
  transform: scale(1.08);
}

body::after {
  z-index: -1;
  background:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.58), transparent 34%);
  background-size: 72px 72px, 72px 72px, 100% 100%;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.16) 72%, transparent);
}

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(180deg, #080d16 0%, #0b1520 52%, #0a0d14 100%);
  }

  body::before {
    opacity: 0.58;
    filter: blur(66px) saturate(1.35);
  }

  body::after {
    background:
      linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
      radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.12), transparent 36%);
    background-size: 72px 72px, 72px 72px, 100% 100%;
  }
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  color: #0f5fd4;
}

.container {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

.liquid {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.3)),
    var(--surface);
  border: 1px solid var(--line);
  box-shadow:
    0 22px 70px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    inset 0 -1px 0 rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(30px) saturate(1.35);
  -webkit-backdrop-filter: blur(30px) saturate(1.35);
}

@media (prefers-color-scheme: dark) {
  .liquid {
    background:
      linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03)),
      var(--surface);
  }
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  min-height: 56px;
  padding: 8px 10px 8px 12px;
  border-radius: 999px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: 0 8px 24px rgba(80, 130, 170, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.nav-links a {
  color: var(--muted);
  padding: 9px 12px;
  border-radius: 999px;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.36);
  color: var(--ink);
}

.hero {
  padding: 76px 0 26px;
}

.eyebrow {
  color: var(--faint);
  font-size: 12px;
  font-weight: 520;
  text-transform: uppercase;
  margin-bottom: 14px;
}

h1 {
  max-width: 680px;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 520;
  line-height: 1.14;
  letter-spacing: 0;
}

.subtitle,
.effective-date {
  max-width: 680px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 15px;
}

.doc-shell {
  margin: 22px auto 70px;
  padding: clamp(24px, 5vw, 46px);
  border-radius: 28px;
}

.highlight,
.contact-box {
  margin: 0 0 30px;
  padding: 18px 20px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--line-soft);
}

.highlight {
  border-color: rgba(36, 214, 209, 0.28);
  background:
    linear-gradient(135deg, rgba(36, 214, 209, 0.14), rgba(22, 119, 255, 0.08)),
    rgba(255, 255, 255, 0.42);
}

h2 {
  margin: 34px 0 12px;
  padding-top: 2px;
  color: var(--ink);
  font-size: 21px;
  font-weight: 520;
  line-height: 1.35;
}

h3 {
  margin: 24px 0 8px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 560;
  line-height: 1.5;
}

p {
  margin: 12px 0;
  color: var(--muted);
  font-size: 15px;
}

ul {
  margin: 12px 0 16px;
  padding-left: 22px;
  color: var(--muted);
}

li {
  margin: 8px 0;
  font-size: 15px;
}

strong {
  color: var(--ink);
  font-weight: 560;
}

.doc-footer {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  color: var(--faint);
  font-size: 13px;
  line-height: 1.8;
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 28px);
  }

  .site-nav {
    margin-top: 8px;
  }

  .nav-links {
    gap: 2px;
    font-size: 12px;
  }

  .nav-links a {
    padding: 8px 9px;
  }

  .hero {
    padding: 54px 0 20px;
  }

  .doc-shell {
    border-radius: 20px;
    margin-bottom: 44px;
  }
}