:root {
  --nw-bg: #f6f8fc;
  --nw-surface: #ffffff;
  --nw-surface-muted: #f8fafc;
  --nw-border: #d9e1ec;
  --nw-border-strong: #c7d2e2;
  --nw-text: #0f172a;
  --nw-text-soft: #334155;
  --nw-text-faint: #64748b;
  --nw-accent: #0f172a;
  --nw-accent-2: #1d4ed8;
  --nw-accent-2-soft: #dbeafe;
  --nw-success-soft: #ecfdf5;
  --nw-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --nw-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --nw-shadow-lg: 0 18px 48px rgba(15, 23, 42, 0.12);
  --nw-radius-sm: 12px;
  --nw-radius-md: 18px;
  --nw-radius-lg: 24px;
  --nw-content: 1120px;
  --nw-header-h: 72px;
}

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

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.08), transparent 32%),
    radial-gradient(circle at top right, rgba(15, 23, 42, 0.06), transparent 24%),
    var(--nw-bg);
  color: var(--nw-text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--nw-accent-2);
  text-decoration: none;
  transition:
    color 0.2s ease,
    opacity 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

a:hover {
  color: #1e40af;
}

code {
  padding: 0.12rem 0.42rem;
  border: 1px solid var(--nw-border);
  border-radius: 999px;
  background: var(--nw-surface-muted);
  font-family:
    "SFMono-Regular",
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    monospace;
  font-size: 0.92em;
  color: var(--nw-text);
}

ul,
ol {
  margin: 0 0 1.1rem;
  padding-left: 1.3rem;
}

li + li {
  margin-top: 0.35rem;
}

.nw-page {
  min-height: 100vh;
}

.nw-site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid rgba(217, 225, 236, 0.88);
  background: rgba(246, 248, 252, 0.84);
  backdrop-filter: saturate(180%) blur(18px);
}

.nw-site-header__inner,
.nw-main,
.nw-site-footer__inner {
  width: min(calc(100% - 32px), var(--nw-content));
  margin: 0 auto;
}

.nw-site-header__inner {
  min-height: var(--nw-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nw-site-brand a {
  color: var(--nw-text);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.nw-site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nw-site-nav a {
  color: var(--nw-text-soft);
  font-size: 0.95rem;
  font-weight: 600;
}

.nw-site-nav a:hover {
  color: var(--nw-text);
}

.nw-main {
  padding-block: 28px 72px;
}

.nw-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(199, 210, 226, 0.7);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.97), rgba(248, 250, 252, 0.95)),
    var(--nw-surface);
  box-shadow: var(--nw-shadow-lg);
}

.nw-hero::before {
  content: "";
  position: absolute;
  inset: auto -10% 0 auto;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
  pointer-events: none;
}

.nw-hero__inner {
  position: relative;
  padding: 34px 34px 36px;
}

.nw-eyebrow {
  margin: 0 0 14px;
  color: var(--nw-accent-2);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.nw-hero h1 {
  margin: 0;
  color: var(--nw-text);
  font-size: clamp(2rem, 3.3vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.nw-lead {
  max-width: 860px;
  margin: 18px 0 0;
  color: var(--nw-text-soft);
  font-size: clamp(1.02rem, 1.45vw, 1.18rem);
  line-height: 1.8;
}

.nw-meta {
  margin-top: 18px;
  color: var(--nw-text-faint);
  font-size: 0.96rem;
}

.nw-meta p {
  margin: 0;
}

.nw-meta a {
  font-weight: 600;
}

.nw-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.nw-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.78rem 1rem;
  border: 1px solid var(--nw-border-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--nw-text);
  font-size: 0.96rem;
  font-weight: 700;
  box-shadow: var(--nw-shadow-sm);
  text-align: center;
}

.nw-button:hover {
  transform: translateY(-1px);
  box-shadow: var(--nw-shadow-md);
  border-color: #b8c6da;
  color: var(--nw-text);
}

.nw-button--primary {
  border-color: var(--nw-accent);
  background: var(--nw-accent);
  color: #ffffff;
}

.nw-button--primary:hover {
  border-color: var(--nw-accent);
  background: #1e293b;
  color: #ffffff;
}

.nw-summary-strip {
  margin-top: 22px;
}

.nw-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.nw-summary-card,
.nw-card,
.nw-layer-item,
.nw-faq-item,
.nw-support-callout,
.nw-toc,
.nw-section {
  border: 1px solid rgba(199, 210, 226, 0.8);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--nw-shadow-md);
}

.nw-summary-card {
  padding: 18px 18px 17px;
  border-radius: var(--nw-radius-md);
}

.nw-summary-card h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.nw-summary-card p {
  margin: 0;
  color: var(--nw-text-soft);
  font-size: 0.95rem;
  line-height: 1.75;
}

.nw-toc,
.nw-section,
.nw-support-callout {
  margin-top: 18px;
  border-radius: var(--nw-radius-lg);
}

.nw-toc {
  padding: 22px 24px;
}

.nw-section {
  padding: 28px 28px 30px;
}

.nw-support-callout {
  padding: 24px 24px 26px;
  background:
    linear-gradient(135deg, rgba(219, 234, 254, 0.58), rgba(255, 255, 255, 0.96)),
    var(--nw-surface);
}

.nw-related-jump {
  margin: 16px 0 22px;
  padding: 14px 16px;
  border: 1px solid rgba(59, 130, 246, 0.22);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(219, 234, 254, 0.5), rgba(255, 255, 255, 0.96));
  box-shadow: var(--nw-shadow-sm);
}

.nw-related-jump p {
  margin: 0;
  color: var(--nw-text-soft);
  font-size: 0.96rem;
  line-height: 1.7;
}

.nw-related-jump a {
  font-weight: 800;
  color: var(--nw-accent-2);
}

.nw-related-jump a:hover {
  color: #1e40af;
}

.nw-section-heading {
  margin-bottom: 16px;
}

.nw-section-heading h2,
.nw-support-callout h2 {
  margin: 0;
  color: var(--nw-text);
  font-size: clamp(1.28rem, 1.8vw, 1.72rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.nw-prose {
  color: var(--nw-text-soft);
  font-size: 1rem;
}

.nw-prose > *:first-child {
  margin-top: 0;
}

.nw-prose > *:last-child {
  margin-bottom: 0;
}

.nw-prose p {
  margin: 0 0 1rem;
}

.nw-prose ul,
.nw-prose ol {
  margin-bottom: 1rem;
}

.nw-toc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nw-toc-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0.58rem 0.82rem;
  border: 1px solid var(--nw-border);
  border-radius: 999px;
  background: var(--nw-surface-muted);
  color: var(--nw-text-soft);
  font-size: 0.94rem;
  font-weight: 700;
}

.nw-toc-links a:hover {
  border-color: #b8c6da;
  background: #eef4ff;
  color: var(--nw-text);
}

.nw-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.nw-card {
  padding: 18px 18px 17px;
  border-radius: var(--nw-radius-md);
}

.nw-card h3,
.nw-layer-item h3,
.nw-faq-item h3 {
  margin: 0 0 10px;
  font-size: 1.04rem;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.nw-card p,
.nw-layer-item p,
.nw-faq-item p {
  margin: 0;
  color: var(--nw-text-soft);
  font-size: 0.96rem;
  line-height: 1.75;
}

.nw-layer-list,
.nw-faq-list {
  display: grid;
  gap: 14px;
}

.nw-layer-item,
.nw-faq-item {
  padding: 18px 18px 17px;
  border-radius: var(--nw-radius-md);
}

.nw-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nw-link-row a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.72rem 0.96rem;
  border: 1px solid var(--nw-border);
  border-radius: 999px;
  background: var(--nw-surface-muted);
  color: var(--nw-text);
  font-weight: 700;
}

.nw-link-row a:hover {
  border-color: #b8c6da;
  background: #eef4ff;
}

.nw-donate {
  margin-top: 16px;
}

.nw-donate-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nw-donate-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.82rem 1rem;
  border: 1px solid var(--nw-border-strong);
  border-radius: 999px;
  background: #ffffff;
  color: var(--nw-text);
  font-weight: 800;
  box-shadow: var(--nw-shadow-sm);
}

.nw-donate-links a:hover {
  transform: translateY(-1px);
  box-shadow: var(--nw-shadow-md);
  border-color: #b7c6dd;
  color: var(--nw-text);
}

.nw-section--disclaimer {
  background: rgba(248, 250, 252, 0.92);
}

.nw-site-footer {
  border-top: 1px solid rgba(217, 225, 236, 0.88);
  background: rgba(255, 255, 255, 0.72);
}

.nw-site-footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 18px 24px;
  padding-block: 22px 28px;
  flex-wrap: wrap;
}

.nw-footer-links,
.nw-footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  align-items: center;
  color: var(--nw-text-faint);
  font-size: 0.94rem;
}

.nw-footer-links span,
.nw-footer-meta span {
  color: var(--nw-text-faint);
}

.nw-footer-links a,
.nw-footer-meta a {
  color: var(--nw-text-soft);
  font-weight: 600;
}

.nw-footer-links a:hover,
.nw-footer-meta a:hover {
  color: var(--nw-text);
}

@media (max-width: 1080px) {
  .nw-summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  :root {
    --nw-header-h: auto;
  }

  .nw-site-header__inner {
    padding-block: 14px;
    align-items: flex-start;
    flex-direction: column;
  }

  .nw-site-nav {
    justify-content: flex-start;
    gap: 12px 16px;
  }

  .nw-main {
    width: min(calc(100% - 20px), var(--nw-content));
    padding-block: 16px 56px;
  }

  .nw-hero__inner,
  .nw-section,
  .nw-toc,
  .nw-support-callout {
    padding-inline: 18px;
  }

  .nw-hero__inner {
    padding-block: 24px 24px;
  }

  .nw-summary-grid,
  .nw-card-grid {
    grid-template-columns: 1fr;
  }

  .nw-hero-actions,
  .nw-toc-links,
  .nw-link-row,
  .nw-donate-links {
    flex-direction: column;
    align-items: stretch;
  }

  .nw-button,
  .nw-link-row a,
  .nw-donate-links a,
  .nw-toc-links a {
    width: 100%;
  }

  .nw-section-heading {
    margin-bottom: 14px;
  }

  .nw-site-footer__inner {
    padding-top: 18px;
    padding-bottom: 24px;
  }
}

@media (max-width: 420px) {
  .nw-eyebrow {
    font-size: 0.8rem;
  }

  .nw-lead,
  .nw-prose,
  .nw-card p,
  .nw-layer-item p,
  .nw-faq-item p,
  .nw-summary-card p {
    font-size: 0.96rem;
  }

  .nw-summary-card,
  .nw-card,
  .nw-layer-item,
  .nw-faq-item {
    padding: 16px;
  }
}