:root {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #101d30;
  --panel-soft: #0f1929;
  --text: #e8eefc;
  --muted: #b8c3d8;
  --line: #263449;
  --accent: #8df2c2;
  --blue: #91b9ff;
  --amber: #f3cd85;
  font-family: 'Cairo', system-ui, -apple-system, 'Segoe UI', Tahoma, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.85; }
html[lang=ar] .en, html[lang=en] .ar, [hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
a, button, input { touch-action: manipulation; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
svg { display: block; flex: 0 0 auto; }
bdi { unicode-bidi: isolate; }
.shell { max-width: 1180px; margin-inline: auto; padding-inline: 28px; }
.skip-link { position: fixed; top: -100px; inset-inline-start: 16px; z-index: 30; background: var(--accent); color: #0b1220; padding: 12px 20px; border-radius: 6px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: #0b1220f5; }
.header-inner { min-height: 86px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark { color: var(--accent); border: 1px solid #3e665a; background: #142e2b; width: 43px; height: 46px; border-radius: 10px; display: grid; place-items: center; }
.brand strong { display: block; font-size: 16px; line-height: 1.6; letter-spacing: .1px; }
.brand small { display: block; color: var(--muted); font-size: 10px; letter-spacing: 1.4px; }
.header-nav { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.nav-link, .control { border: 1px solid transparent; background: transparent; color: var(--text); border-radius: 8px; padding: 8px 12px; font-size: 13px; min-height: 43px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.nav-link:hover { color: var(--accent); background: var(--panel); }
.control { border-color: var(--line); background: var(--panel); }
.control:hover { border-color: var(--accent); }
.language-control { min-width: 65px; font-weight: 700; }
[data-site-language], [data-site-print], [data-guide-expand], .section-search { display: none; }
.site-ready [data-site-language], .site-ready [data-site-print], .site-ready [data-guide-expand] { display: inline-flex; }
.site-ready .section-search { display: flex; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .4px; margin: 0 0 14px; }
.home-hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; padding-block: 62px 45px; align-items: center; }
h1 { font-size: clamp(30px, 3.5vw, 46px); line-height: 1.6; margin: 0 0 14px; letter-spacing: -.6px; }
.home-hero h1 em { color: var(--accent); font-style: normal; }
.hero-copy { max-width: 650px; color: var(--muted); font-size: 15px; margin: 0; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.button { display: inline-flex; gap: 10px; align-items: center; justify-content: center; padding: 10px 18px; min-height: 47px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); font-size: 13px; font-weight: 700; }
.button:hover { border-color: var(--blue); }
.button.primary { color: #0b1220; background: var(--accent); border-color: var(--accent); }
.hero-note { color: var(--muted); font-size: 11px; margin: 15px 0 0; }
.stage-board { background: var(--panel-soft); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.stage-head { padding: 15px 20px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; }
.stage-head strong { font-size: 13px; }
.stage-head small { color: var(--muted); font-size: 10px; }
.stage-list { padding: 4px 20px; }
.stage-list a { display: flex; gap: 14px; align-items: center; padding-block: 13px; border-bottom: 1px solid var(--line); }
.stage-list a:last-child { border-bottom: 0; }
.stage-list a:hover strong { color: var(--accent); }
.stage-number { font-family: system-ui, sans-serif; font-size: 11px; color: var(--accent); width: 29px; height: 29px; border: 1px solid #355549; border-radius: 50%; display: grid; place-items: center; }
.stage-list strong { font-size: 13px; display: block; }
.stage-list small { font-size: 10px; color: var(--muted); display: block; }
.stage-arrow { margin-inline-start: auto; color: var(--muted); }
html[dir=rtl] .direction-arrow { transform: rotate(180deg); }
.overview-strip { border-block: 1px solid var(--line); display: flex; gap: 30px; padding-block: 14px; align-items: center; flex-wrap: wrap; }
.overview-strip p { margin: 0; font-size: 12px; color: var(--muted); }
.overview-strip b { color: var(--text); font-family: inherit; padding-inline-end: 5px; font-size: 16px; }
.overview-strip .strip-note { margin-inline-start: auto; color: var(--accent); font-size: 11px; }
.section-search { margin-top: 32px; border: 1px solid var(--line); background: var(--panel-soft); border-radius: 10px; padding: 10px 15px; gap: 12px; align-items: center; }
.section-search svg { color: var(--muted); }
.search-field { flex: 1; min-width: 0; }
.search-field label { display: block; font-size: 11px; color: var(--muted); }
.search-field input { width: 100%; color: var(--text); font-size: 14px; background: transparent; border: 0; outline: 0; padding: 2px 0; min-height: 31px; }
.search-field input:focus-visible { outline: 0; box-shadow: 0 2px var(--accent); }
.clear-search { font-size: 12px; min-height: 43px; color: var(--blue); border: 0; background: transparent; padding: 6px; }
.search-status { margin: 10px 0 0; font-size: 12px; color: var(--muted); }
.home-section { padding-block: 30px 6px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
.section-heading h2 { font-size: 22px; line-height: 1.6; margin: 0 0 3px; }
.section-heading p { margin: 0; font-size: 12px; color: var(--muted); }
.section-heading .section-number { color: var(--accent); font-family: system-ui, sans-serif; font-size: 11px; border-bottom: 1px solid #4b7162; padding: 4px 0; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
.tool-card { position: relative; display: flex; flex-direction: column; gap: 0; border: 1px solid var(--line); background: var(--panel-soft); padding: 23px; border-radius: 13px; min-width: 0; transition: background .15s, border-color .15s; }
.tool-card:hover { background: #152438; border-color: #51637c; }
.tool-card.card-featured { border-color: #385b50; background: linear-gradient(140deg, #142b2c, #101c2e 80%); }
.tool-icon { width: 42px; height: 42px; display: grid; place-items: center; background: #1a2a40; color: var(--blue); border: 1px solid #31435d; border-radius: 10px; }
.card-featured .tool-icon { color: var(--accent); border-color: #3f6b59; background: #19372f; }
.tool-card .category { color: var(--muted); font-size: 10px; margin-top: 17px; letter-spacing: .5px; }
.tool-card h3 { font-size: 18px; line-height: 1.7; margin: 2px 0 8px; }
.tool-card p { font-size: 12px; color: var(--muted); line-height: 1.95; margin: 0 0 18px; }
.card-bottom { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 11px; color: var(--accent); }
.references-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.references-grid .tool-card { padding: 20px; }
.references-grid h3 { font-size: 16px; }
.new-label { position: absolute; inset-inline-end: 18px; top: 21px; font-size: 10px; color: var(--accent); background: #19372f; padding: 2px 9px; border-radius: 5px; border: 1px solid #355549; }
.quick-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.quick-link { padding: 17px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel-soft); min-width: 0; display: flex; gap: 12px; align-items: center; }
.quick-link:hover { border-color: var(--blue); }
.quick-link svg { color: var(--blue); }
.quick-link strong { font-size: 12px; display: block; }
.quick-link small { display: block; font-size: 10px; color: var(--muted); }
.empty-state { padding: 35px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: 12px; margin-top: 20px; }
.site-footer { margin-top: 48px; border-top: 1px solid var(--line); padding-block: 23px 30px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.site-footer strong { font-size: 13px; display: block; }
.site-footer small { font-size: 11px; color: var(--muted); }
.social-links { display: flex; gap: 18px; font-family: system-ui, sans-serif; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.social-links a:hover { color: var(--accent); }
.breadcrumbs { display: flex; gap: 9px; align-items: center; color: var(--muted); font-size: 11px; margin-top: 23px; }
.breadcrumbs a:hover { color: var(--accent); }
.guide-hero { padding-block: 28px; border-bottom: 1px solid var(--line); max-width: 920px; }
.guide-hero h1 { font-size: clamp(27px, 3vw, 37px); }
.guide-hero .hero-copy { max-width: 820px; font-size: 14px; }
.guide-meta { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 17px; font-size: 11px; color: var(--muted); }
.guide-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 34px; margin-top: 28px; align-items: start; }
.guide-nav { position: sticky; top: 106px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel-soft); overflow: hidden; }
.guide-nav h2 { font-size: 13px; margin: 0; padding: 14px 17px; border-bottom: 1px solid var(--line); }
.guide-nav a { display: flex; gap: 10px; padding: 8px 17px; font-size: 11px; color: var(--muted); }
.guide-nav a:hover { background: #1a2a40; color: var(--text); }
.guide-nav .toc-number { color: var(--accent); font-family: system-ui, sans-serif; font-size: 10px; min-width: 19px; }
.guide-article { min-width: 0; }
.guide-section { scroll-margin-top: 105px; margin-bottom: 35px; }
.guide-section > h2 { margin: 0 0 12px; font-size: 21px; line-height: 1.8; }
.guide-section > p { font-size: 13px; color: var(--muted); }
.guide-section h3 { font-size: 15px; }
.guide-article p, .guide-article li { font-size: 13px; }
.guide-article ul, .guide-article ol { padding-inline-start: 22px; }
.guide-article li { margin-block: 7px; }
.guide-article a.inline-link { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.guide-article details { margin-bottom: 10px; border: 1px solid var(--line); border-radius: 11px; background: var(--panel-soft); }
.guide-article summary { cursor: pointer; padding: 14px 17px; display: flex; justify-content: space-between; gap: 12px; align-items: center; list-style: none; font-size: 13px; font-weight: 700; }
.guide-article summary::-webkit-details-marker { display: none; }
.guide-article summary::after { content: '+'; font: 20px system-ui, sans-serif; color: var(--blue); }
.guide-article details[open] > summary::after { content: '−'; }
.guide-article details[open] > summary { border-bottom: 1px solid var(--line); }
.detail-body { padding: 2px 17px 15px; color: var(--muted); }
.detail-body b, .callout b { color: var(--text); }
.callout { padding: 13px 17px; margin-block: 15px; border-inline-start: 3px solid var(--accent); border-radius: 0 6px 6px 0; background: #122828; color: var(--muted); font-size: 12px; }
.callout.amber { background: #29261e; border-inline-start-color: var(--amber); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; margin-block: 14px; }
.guide-article table { border-collapse: collapse; width: 100%; min-width: 660px; font-size: 12px; }
.guide-article caption { text-align: start; padding: 12px 14px; font-size: 12px; background: #17283b; color: var(--text); font-weight: 700; }
.guide-article th, .guide-article td { text-align: start; vertical-align: top; padding: 11px 13px; border-bottom: 1px solid var(--line); }
.guide-article th { background: #152137; color: var(--text); font-size: 11px; }
.guide-article td { color: var(--muted); line-height: 1.9; }
.guide-article tbody tr:last-child td { border-bottom: 0; }
.table-hint { font-size: 10px !important; color: var(--muted); }
.measure-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-block: 15px; }
.measure-item { padding: 13px; background: var(--panel); border: 1px solid var(--line); border-radius: 9px; }
.measure-item b { display: block; font-size: 12px; }
.measure-item p { font-size: 11px; margin: 5px 0 0; color: var(--muted); }
.reference-list { list-style: decimal; padding-inline-start: 22px; }
.reference-list a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; font-size: 12px; }
.reference-list small { display: block; color: var(--muted); font-size: 10px; }
.source-note { font-size: 10px !important; color: var(--muted); }
.related-links { display: flex; flex-wrap: wrap; gap: 9px; }
.related-links .button { font-size: 11px; padding: 7px 13px; }
@media (max-width: 1000px) {
  .home-hero { gap: 25px; }
  .guide-layout { grid-template-columns: 195px minmax(0, 1fr); gap: 22px; }
  .quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 25px; }
  .shell { padding-inline: 18px; }
  .site-header { position: relative; }
  .header-inner { flex-wrap: wrap; gap: 12px; padding-block: 14px; }
  .brand { margin-inline-end: auto; }
  .header-nav { gap: 4px; }
  .header-nav .nav-link { padding: 7px 9px; font-size: 11px; }
  .header-nav .hide-mobile { display: none; }
  .control { padding: 7px 11px; font-size: 11px; }
  .home-hero { grid-template-columns: 1fr; padding-block: 32px; gap: 26px; }
  .home-hero h1 { font-size: 31px; }
  .hero-copy { font-size: 13px; }
  .hero-note { font-size: 10px; }
  .hero-actions .button { flex: 1; padding-inline: 12px; font-size: 12px; }
  .overview-strip { gap: 14px 23px; }
  .overview-strip p { font-size: 10px; }
  .overview-strip .strip-note { width: 100%; margin: 0; }
  .tool-grid, .references-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-grid.daily-grid { grid-template-columns: 1fr; }
  .daily-grid .tool-card { padding: 20px; display: grid; grid-template-columns: 44px minmax(0,1fr); gap: 0 15px; }
  .daily-grid .tool-icon { grid-column: 1; grid-row: 1 / 4; }
  .daily-grid .category { margin: 0; }
  .daily-grid h3, .daily-grid p, .daily-grid .card-bottom { grid-column: 2; }
  .daily-grid h3 { font-size: 17px; }
  .daily-grid .card-bottom { margin-top: 0; }
  .references-grid .tool-card { padding: 17px; }
  .references-grid .tool-card p { font-size: 11px; }
  .references-grid h3 { font-size: 14px; }
  .references-grid .category { font-size: 9px; }
  .section-heading h2 { font-size: 20px; }
  .section-heading p { font-size: 11px; }
  .guide-layout { grid-template-columns: 1fr; gap: 26px; }
  .guide-nav { position: static; }
  .guide-nav .toc-links { display: grid; grid-template-columns: 1fr 1fr; padding-block: 5px; }
  .guide-nav a { padding: 7px 12px; font-size: 10px; gap: 8px; }
  .guide-section { scroll-margin-top: 18px; }
  .guide-hero { padding-top: 22px; }
  .guide-hero h1 { font-size: 28px; }
  .guide-hero .hero-copy { font-size: 12px; }
  .guide-section > h2 { font-size: 20px; }
  .site-footer { align-items: start; flex-direction: column; gap: 13px; }
}
@media (max-width: 380px) {
  .shell { padding-inline: 14px; }
  .brand strong { font-size: 14px; }
  .brand-mark { width: 37px; height: 41px; }
  .brand { gap: 9px; }
  .header-nav { gap: 1px; }
  .tool-grid, .references-grid { grid-template-columns: 1fr; }
  .references-grid .tool-card { padding: 20px; }
  .references-grid h3 { font-size: 17px; }
  .quick-grid { grid-template-columns: 1fr; }
  .measure-list { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}
@media print {
  :root { color-scheme: light; --text: #111; --muted: #333; --line: #bbb; --bg: #fff; --panel: #fff; --panel-soft: #fff; --accent: #12533b; --blue: #183c69; }
  @page { size: A4; margin: 15mm 14mm; }
  body { background: #fff; color: #111; font-size: 10pt; line-height: 1.55; }
  .site-header, .skip-link, .breadcrumbs, .guide-nav, .hero-actions, .site-footer, .related-links, .source-note.screen-only { display: none !important; }
  .shell { max-width: none; padding: 0; }
  .guide-layout { display: block; margin-top: 16px; }
  .guide-hero { padding-top: 0; max-width: none; }
  .guide-hero h1 { font-size: 22pt; line-height: 1.5; }
  .guide-hero .hero-copy { font-size: 10pt; }
  .guide-meta { margin-top: 8px; }
  .guide-section { margin-bottom: 18px; }
  .guide-section > h2 { font-size: 15pt; break-after: avoid; }
  .guide-article details { border: 0; border-bottom: 1px solid #bbb; border-radius: 0; break-inside: avoid; }
  .guide-article summary { padding: 8px 0; font-size: 11pt; break-after: avoid; }
  .guide-article summary::after { display: none; }
  .guide-article details[open] > summary { border-bottom: 0; }
  .detail-body { padding: 0 0 8px; }
  .guide-article p, .guide-article li { font-size: 9.5pt; }
  .guide-article li { margin-block: 4px; }
  .table-wrap { overflow: visible; border-radius: 0; }
  .guide-article table { table-layout: fixed; min-width: 0; font-size: 8.5pt; }
  .guide-article th, .guide-article td { padding: 7px; font-size: 8.5pt; overflow-wrap: anywhere; }
  .guide-article caption, .guide-article th { background: #edf0f3; color: #111; }
  .guide-article td { background: #fff; color: #222; }
  thead { display: table-header-group; }
  tr { break-inside: avoid; }
  .table-hint { display: none; }
  .callout { border: 1px solid #bbb; background: #fff !important; font-size: 9pt; break-inside: avoid; }
  .measure-list { gap: 8px; }
  .measure-item { break-inside: avoid; }
  .reference-list a { color: #111; }
}