:root {
  --bg: #f6f3ec;
  --ink: #1c1916;
  --ink-soft: #3f3a34;
  --muted: #5e574e;
  --line: #e3dbcf;
  --line-strong: #d4cbbd;
  --paper: #fffdfb;
  --accent: #0f6e6a;
  --accent-dark: #0b5552;
  --accent-soft: #e7f2f1;
  --focus: #0f6e6a;
  --shadow: 0 1px 0 rgba(28, 25, 22, 0.04);
  --wrap: 42.5rem;
  --header: 4.25rem;
  --top-link: 2.75rem;
  --chrome: calc(var(--header) + var(--top-link));
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--chrome) + 0.75rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", Tahoma, "Geeza Pro", "Noto Naskh Arabic", "Noto Sans Arabic", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.95;
  text-rendering: optimizeLegibility;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-dark);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  inset-inline-start: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: #fff;
  padding: 0.55rem 0.9rem;
  border-radius: 0.4rem;
  text-decoration: none;
}

.skip:focus {
  top: 0.75rem;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

.chrome {
  position: sticky;
  top: 0;
  z-index: 10;
}

.top-link {
  margin: 0;
  min-height: var(--top-link);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.4rem 1rem;
  background: var(--accent-dark);
  color: #f4fbfa;
  font-size: 0.95rem;
  line-height: 1.6;
  text-align: center;
}

.top-link a {
  color: #fff;
  font-weight: 700;
  text-underline-offset: 0.16em;
}

.top-link a:hover {
  color: #fff;
}

.site-header {
  height: var(--header);
  background: rgba(246, 243, 236, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
}

.brand:hover {
  color: var(--accent-dark);
}

.site-nav {
  display: flex;
  gap: 1.1rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.hero {
  padding: 3.25rem 0 1.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 7.5rem;
  gap: 1.5rem;
  align-items: end;
}

.kicker {
  margin: 0 0 0.85rem;
  color: var(--accent-dark);
  font-size: 0.92rem;
  font-weight: 600;
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: 0;
}

.lede {
  margin: 1.15rem 0 0;
  color: var(--ink-soft);
  font-size: 1.12rem;
  line-height: 1.95;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.9rem;
  margin: 1.25rem 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.92rem;
  list-style: none;
}

.meta li + li::before {
  content: "·";
  margin-inline-end: 0.9rem;
  color: var(--line-strong);
}

.hero-mark {
  justify-self: end;
  width: 7.5rem;
  height: 7.5rem;
  color: var(--accent);
}

.toc {
  margin: 0.5rem 0 2.5rem;
  padding: 1.15rem 1.25rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  box-shadow: var(--shadow);
}

.toc h2 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
  line-height: 1.5;
}

.toc ol {
  margin: 0;
  padding: 0 1.15rem 0 0;
}

.toc li {
  margin: 0.28rem 0;
  line-height: 1.7;
}

.toc a {
  text-decoration-thickness: 1px;
}

.toc a[aria-current="true"] {
  font-weight: 700;
  text-decoration: none;
}

.prose h2 {
  margin: 2.6rem 0 0.8rem;
  font-size: 1.45rem;
  line-height: 1.5;
  scroll-margin-top: calc(var(--chrome) + 0.75rem);
}

.prose h3 {
  margin: 1.6rem 0 0.45rem;
  font-size: 1.12rem;
  line-height: 1.6;
}

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

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

.prose strong {
  color: var(--ink);
  font-weight: 700;
}

.latin,
.prose .latin {
  direction: ltr;
  unicode-bidi: isolate;
  font-feature-settings: "kern" 1;
}

.note {
  margin: 1.2rem 0 1.4rem;
  padding: 0.9rem 1rem;
  background: var(--accent-soft);
  border-inline-start: 3px solid var(--accent);
  border-radius: 0.55rem;
  color: var(--ink-soft);
}

.table-wrap {
  margin: 1.1rem 0 1.4rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--paper);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 36rem;
  font-size: 0.96rem;
  line-height: 1.7;
}

caption {
  caption-side: bottom;
  padding: 0.7rem 0.9rem 0.85rem;
  color: var(--muted);
  text-align: right;
  font-size: 0.88rem;
}

th,
td {
  padding: 0.75rem 0.9rem;
  text-align: right;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  background: #f3f7f6;
  color: var(--ink);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: 0;
}

.format-block {
  margin: 0.4rem 0 1.15rem;
  padding: 0.85rem 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
}

.format-block h3 {
  margin: 0.2rem 0 0.35rem;
}

.format-block p:last-child {
  margin-bottom: 0;
}

.tips {
  margin: 0.4rem 0 1.2rem;
  padding: 0 1.15rem 0 0;
}

.tips li {
  margin: 0.35rem 0;
}

.feature {
  margin: 2.8rem 0 0.5rem;
  padding: 1.35rem 1.3rem 1.15rem;
  background: #fbf8f2;
  border: 1px solid #e6dccb;
  border-inline-start: 3px solid var(--accent);
  border-radius: 0.95rem;
}

.feature .eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 700;
}

.feature h2 {
  margin-top: 0;
}

.feature a {
  font-weight: 600;
}

.sources {
  margin-top: 2.4rem;
  padding-top: 0.4rem;
}

.sources ol {
  margin: 0.4rem 0 0;
  padding: 0 1.2rem 0 0;
}

.sources li {
  margin: 0.7rem 0 1rem;
}

.sources a {
  font-weight: 600;
}

.source-url {
  display: block;
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.9rem;
  direction: ltr;
  text-align: right;
}

.site-footer {
  margin-top: 3.5rem;
  padding: 1.8rem 0 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0 0 0.8rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  margin-bottom: 0.9rem;
}

.footer-nav a {
  color: var(--ink-soft);
}

.legal {
  margin: 0;
  font-size: 0.88rem;
}

.empty-main {
  padding: 4.5rem 0 3rem;
  min-height: calc(100vh - 12rem);
}

.empty-main h1 {
  margin-bottom: 0.8rem;
}

.empty-main p {
  color: var(--ink-soft);
  max-width: 36rem;
}

@media (max-width: 720px) {
  body {
    font-size: 1.02rem;
  }

  .chrome {
    position: static;
  }

  .top-link {
    min-height: 0;
    flex-wrap: wrap;
    padding: 0.55rem 0.9rem;
  }

  .site-header {
    height: auto;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.85rem 0;
    gap: 0.35rem;
  }

  .hero {
    padding-top: 2rem;
  }

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

  .hero-mark {
    display: none;
  }

  .wrap {
    width: min(var(--wrap), calc(100% - 1.75rem));
  }

  h1 {
    font-size: 1.65rem;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .chrome,
  .skip,
  .toc,
  .site-footer .footer-nav {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  a {
    color: #000;
    text-decoration: none;
  }

  .feature,
  .note,
  .format-block,
  .table-wrap {
    border: 1px solid #bbb;
    background: #fff;
  }
}