/* ============================================================
   هيكل — HAYKAL
   نمط واحد، بلا إطار عمل. الشبكة والخط الشعري هما المادة البصرية.
   ============================================================ */

/* ---------- 1. الأساس ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

:root {
  /* الحجر والحبر */
  --sand-50:  #F7F4EC;
  --sand-100: #F0EADC;
  --sand-200: #E2D9C7;
  --sand-300: #CFC2AB;

  --ink:      #16130F;
  --ink-2:    #221D17;
  --ink-3:    #2E2820;

  /* الطين المحروق — اللون الوحيد المُميِّز */
  --clay:      #A4552C;
  --clay-soft: #C1764C;
  --clay-deep: #7A3A1B;

  --green:  #2B3A31;
  --muted:  #6E6355;
  --muted-2:#776B5B;

  --line:        rgba(22, 19, 15, .14);
  --line-soft:   rgba(22, 19, 15, .08);
  --line-invert: rgba(240, 234, 220, .18);

  /* الخطوط */
  --f-display: "Noto Kufi Arabic", "Segoe UI", system-ui, sans-serif;
  --f-body: "IBM Plex Sans Arabic", "Segoe UI", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;

  /* المقاسات */
  --wrap: 1280px;
  --gut: clamp(20px, 5vw, 72px);
  --sec-y: clamp(72px, 9vw, 140px);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

html {
  direction: rtl;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--sand-50);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: clamp(16px, 1.05vw + 12px, 18px);
  font-weight: 400;
  line-height: 1.9;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }

::selection {
  background: var(--clay);
  color: var(--sand-50);
}

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

/* ---------- 2. الطباعة ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 700;
  line-height: 1.34;
  margin: 0;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  font-size: clamp(34px, 5.4vw, 72px);
  font-weight: 800;
  line-height: 1.24;
}

h2 {
  font-size: clamp(26px, 3.2vw, 44px);
  line-height: 1.32;
}

h3 {
  font-size: clamp(19px, 1.5vw, 23px);
  line-height: 1.5;
}

p { margin: 0 0 1.1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: clamp(17px, 1.15vw + 12px, 20px);
  line-height: 1.95;
  color: var(--muted);
  max-width: 62ch;
}

.mono {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  font-weight: 500;
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
}

/* ---------- 3. البنية ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section {
  padding-block: var(--sec-y);
  padding-top: calc(var(--sec-y) + 30px);
  border-top: 0;
  position: relative;
}

/* إفريز سدو نجدي يفصل الأقسام بدل الخط الشعري */
.section::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 26px;
  background: url("../img/orn-frieze.svg") repeat-x left top / 120px 26px;
  opacity: .38;
  pointer-events: none;
}

.section--flush { border-top: 0; }

.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2vw, 30px);
  margin-bottom: clamp(40px, 5vw, 76px);
}

@media (min-width: 900px) {
  .sec-head {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 72px);
    align-items: start;
  }
  .sec-head__meta { position: sticky; top: 110px; }
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  font-weight: 500;
  color: var(--clay);
  text-transform: uppercase;
  direction: ltr;
  justify-content: flex-end;
}

.eyebrow--rtl {
  direction: rtl;
  font-family: var(--f-body);
  font-size: 12px;
  letter-spacing: .02em;
  font-weight: 600;
}

.eyebrow__num {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--clay);
}

.eyebrow__rule {
  flex: 0 0 44px;
  height: 1px;
  background: var(--clay);
  opacity: .5;
}

/* ---------- 4. الترويسة ---------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 60;
  --hd-fg: var(--sand-100);
  --hd-bd: transparent;
  --hd-bg: transparent;
  color: var(--hd-fg);
  border-bottom: 1px solid var(--hd-bd);
  background: var(--hd-bg);
  backdrop-filter: blur(0px);
  transition: background .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease);
}

.site-header.is-stuck {
  --hd-fg: var(--ink);
  --hd-bd: var(--line);
  --hd-bg: rgba(247, 244, 236, .92);
  backdrop-filter: blur(14px) saturate(120%);
}

.site-header__in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 74px;
  padding-inline: var(--gut);
  max-width: var(--wrap);
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 30px;
  height: auto;
  display: block;
  color: var(--clay);
}

.brand__mark svg { display: block; width: 100%; height: auto; }

.brand__name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1;
  letter-spacing: 0;
}

.brand__latin {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: .28em;
  opacity: .55;
  display: block;
  margin-top: 3px;
  direction: ltr;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 34px);
}

.nav a {
  font-size: 14px;
  font-weight: 500;
  opacity: .78;
  padding-block: 6px;
  position: relative;
  transition: opacity .2s;
}

.nav a::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: inline-end;
  transition: transform .3s var(--ease);
}

.nav a:hover { opacity: 1; }
.nav a:hover::after { transform: scaleX(1); }

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 0 6px 0;
  color: var(--clay-soft);
  border-bottom: 1px solid transparent;
  white-space: nowrap;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.header__cta::before {
  content: "←";
  font-family: var(--f-mono);
  font-size: 12px;
  transition: transform .25s var(--ease);
}

.site-header.is-stuck .header__cta { color: var(--clay); }

.header__cta:hover { border-bottom-color: currentColor; }
.header__cta:hover::before { transform: translateX(-3px); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid currentColor;
  background: none;
  border-radius: 1px;
  color: inherit;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 17px;
  height: 1px;
  background: currentColor;
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  height: 1px;
  background: currentColor;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header__cta { display: none; }
}

/* لوحة الجوال */
.mobile-nav {
  position: fixed;
  inset: 74px 0 auto 0;
  z-index: 59;
  background: var(--sand-50);
  border-bottom: 1px solid var(--line);
  padding: 22px var(--gut) 28px;
  display: none;
  flex-direction: column;
  gap: 2px;
}

.mobile-nav.is-open { display: flex; }

.mobile-nav a {
  padding-block: 13px;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--line-soft);
}

.mobile-nav a:last-of-type { border-bottom: 0; }

.mobile-nav .header__cta {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 18px;
  color: var(--clay);
  border: 1px solid var(--clay);
  padding: 12px 18px;
  font-weight: 600;
}

/* ---------- 5. الواجهة ---------- */
.hero {
  background: var(--ink);
  color: var(--sand-100);
  padding-top: 118px;
  padding-bottom: clamp(34px, 4vw, 56px);
  position: relative;
  overflow: hidden;
}

/* شبكة إنشائية خفيفة في الخلفية */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(240, 234, 220, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(240, 234, 220, .055) 1px, transparent 1px);
  background-size: 74px 74px;
  mask-image: radial-gradient(120% 90% at 78% 20%, #000 0%, transparent 72%);
  pointer-events: none;
}

.hero__in {
  position: relative;
  display: grid;
  gap: clamp(36px, 4vw, 56px);
  align-items: center;
}

@media (min-width: 1000px) {
  .hero__in {
    grid-template-columns: minmax(0, 1fr) minmax(0, .94fr);
    gap: clamp(40px, 5.4vw, 96px);
    min-height: min(72vh, 620px);
  }
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--sand-300);
  border: 1px solid var(--line-invert);
  padding: 7px 13px;
  border-radius: 1px;
  margin-bottom: clamp(22px, 2.4vw, 34px);
}

.hero__eyebrow b {
  color: var(--clay-soft);
  font-weight: 600;
}

.hero h1 { color: var(--sand-50); }

.hero h1 em {
  font-style: normal;
  color: var(--clay-soft);
  position: relative;
  white-space: nowrap;
}

.hero h1 .thin {
  font-weight: 400;
  color: var(--sand-300);
}

.hero__lead {
  margin-top: clamp(20px, 2.2vw, 28px);
  font-size: clamp(16px, .7vw + 13px, 18.5px);
  line-height: 2;
  color: rgba(240, 234, 220, .72);
  max-width: 46ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: clamp(26px, 3vw, 38px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--f-body);
  font-size: 15px;
  font-weight: 600;
  padding: 15px 26px;
  border-radius: 1px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease), transform .24s var(--ease);
  min-height: 48px;
}

.btn--primary {
  background: var(--clay);
  color: var(--sand-50);
  border-color: var(--clay);
}

.btn--primary:hover {
  background: var(--clay-deep);
  border-color: var(--clay-deep);
}

.btn--ghost {
  color: inherit;
  border-color: var(--line-invert);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--sand-300);
  background: rgba(240, 234, 220, .05);
}

.btn__arrow {
  font-family: var(--f-mono);
  font-size: 13px;
  transition: transform .24s var(--ease);
}

.btn:hover .btn__arrow { transform: translateX(-4px); }

/* شريط المنهج أسفل الواجهة */
.hero__strip {
  position: relative;
  border-top: 1px solid var(--line-invert);
  margin-top: clamp(34px, 4vw, 56px);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 34px;
  align-items: center;
  justify-content: space-between;
}

.hero__strip ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 0;
  padding: 0;
}

.hero__strip li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: rgba(240, 234, 220, .62);
}

.hero__strip li .mono {
  color: var(--clay-soft);
  font-size: 11px;
}

.hero__strip-note {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: rgba(240, 234, 220, .55);
  direction: ltr;
}

/* ---------- 6. أداة المقارنة: الزخرفة ← الهيكل ---------- */
.compare {
  /* --split = المسافة من الحافة اليسرى إلى الفاصل (بالبكسل الفعلي، لا المنطقي)
     حتى يتبع الفاصل المؤشر ١:١ أثناء السحب */
  --split: 54%;
  position: relative;
  aspect-ratio: 10 / 9;
  background: var(--ink-2);
  border: 1px solid var(--line-invert);
  overflow: hidden;
  border-radius: 1px;
  isolation: isolate;
  user-select: none;
}

@media (min-width: 1000px) {
  .compare { aspect-ratio: 1 / 1; }
}

.compare__layer {
  position: absolute;
  inset: 0;
}

.compare__layer svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* طبقة الزخرفة: تُقصّ من جهة البداية (اليمين) بحسب --split */
.compare__layer--orn {
  clip-path: inset(0 0 0 var(--split));
  z-index: 2;
}

.compare__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  width: 1px;
  background: rgba(240, 234, 220, .55);
  z-index: 4;
  pointer-events: none;
}

.compare__knob {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translate(-50%, -50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(240, 234, 220, .8);
  background: var(--ink);
  display: grid;
  place-items: center;
  gap: 0;
  color: var(--sand-100);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  box-shadow: 0 0 0 6px rgba(22, 19, 15, .35);
}

.compare__knob::after {
  content: "⟷";
  font-size: 13px;
  line-height: 1;
  color: var(--sand-200);
}

.compare__range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  z-index: 5;
  cursor: ew-resize;
  direction: ltr;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

.compare__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 46px;
  height: 100%;
  cursor: ew-resize;
}

.compare__range::-moz-range-thumb {
  width: 46px;
  height: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  cursor: ew-resize;
}

.compare__tag {
  position: absolute;
  z-index: 3;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(240, 234, 220, .62);
  background: rgba(22, 19, 15, .62);
  border: 1px solid var(--line-invert);
  padding: 5px 10px;
  pointer-events: none;
}

.compare__tag--orn { top: 14px; right: 14px; color: #D9A263; border-color: rgba(217, 162, 99, .35); }
.compare__tag--str { bottom: 14px; left: 14px; }

.compare__cap {
  margin-top: 14px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(240, 234, 220, .58);
}

.compare__cap .mono {
  color: var(--clay-soft);
  font-size: 10.5px;
  padding-top: 3px;
  flex: 0 0 auto;
}

/* ---------- 7. المشكلة ---------- */
.obs {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: clamp(14px, 2vw, 34px);
  padding-block: clamp(26px, 3vw, 40px);
  border-top: 1px solid var(--line);
  align-items: start;
}

.obs:last-child { border-bottom: 1px solid var(--line); }

.obs__num {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--clay);
  padding-top: 8px;
  letter-spacing: .06em;
}

.obs__body h3 { margin-bottom: 8px; }

.obs__body p {
  color: var(--muted);
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.95;
}

.obs__body .tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-2);
  border: 1px solid var(--line);
  padding: 3px 7px;
  margin-bottom: 12px;
}

.verdict {
  margin-top: clamp(34px, 4vw, 60px);
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 12px 32px;
  align-items: start;
}

@media (min-width: 760px) {
  .verdict { grid-template-columns: 120px minmax(0, 1fr); }
}

.verdict__k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay);
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
}

.verdict__k::before {
  content: "";
  width: 11px;
  height: 11px;
  background: url("../img/orn-star.svg") no-repeat center / contain;
}

.problem__verdict {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 31px);
  line-height: 1.45;
  max-width: 34ch;
}

.problem__verdict b { font-weight: 700; color: var(--clay-deep); }

/* ---------- 8. المنهج ---------- */
.method { background: var(--sand-100); border-top: 1px solid var(--line); }

.steps {
  display: grid;
  gap: 0;
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px 0;
  padding-block: clamp(28px, 3.4vw, 44px);
  border-top: 1px solid var(--line);
  position: relative;
}

.step:last-child { border-bottom: 1px solid var(--line); }

@media (min-width: 860px) {
  .step {
    grid-template-columns: 120px minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 52px);
    align-items: start;
  }
}

.step__idx {
  font-family: var(--f-mono);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 400;
  line-height: 1;
  color: #8C8071;
  letter-spacing: -.02em;
  direction: ltr;
  transition: color .4s var(--ease);
  padding-top: 4px;
}

.step:hover .step__idx,
.step.is-live .step__idx { color: var(--clay); }

.step__body h3 { margin-bottom: 10px; }

.step__body p {
  color: var(--muted);
  font-size: 16.5px;
  max-width: 52ch;
}

.step__eg {
  border: 1px solid var(--line);
  padding: 16px 18px;
  background: rgba(255, 255, 255, .34);
  align-self: start;
}

.step__eg-label {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--clay);
  display: block;
  margin-bottom: 9px;
}

.step__eg p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
  margin: 0;
}

.step__eg .mono { color: var(--muted-2); }

/* ---------- 9. المستكشف ---------- */
.explorer {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

@media (min-width: 900px) {
  .explorer {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 64px);
    align-items: start;
  }
}

.tabs {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

@media (max-width: 899px) {
  .tabs {
    flex-direction: row;
    overflow-x: auto;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    scrollbar-width: thin;
  }
}

.tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--f-body);
  text-align: right;
  padding: 17px 4px;
  cursor: pointer;
  color: var(--muted);
  display: flex;
  align-items: baseline;
  gap: 12px;
  transition: color .2s, padding-inline-start .3s var(--ease);
  font-size: 15.5px;
  font-weight: 500;
  white-space: nowrap;
}

@media (max-width: 899px) {
  .tab { border-bottom: 0; padding: 14px 16px; font-size: 14px; }
}

.tab .mono {
  font-size: 10px;
  color: var(--muted-2);
  transition: color .2s;
}

.tab:hover { color: var(--ink); padding-inline-start: 10px; }

.tab[aria-selected="true"] {
  color: var(--ink);
  font-weight: 600;
  padding-inline-start: 12px;
  background: rgba(164, 85, 44, .07);
}

.tab[aria-selected="true"] .mono { color: var(--clay); }

@media (max-width: 899px) {
  .tab:hover, .tab[aria-selected="true"] { padding-inline-start: 16px; }
  .tab[aria-selected="true"] { box-shadow: inset 0 -2px 0 var(--clay); }
}

.tab[aria-selected="true"]::marker { content: none; }

.panel {
  border: 1px solid var(--line);
  background: var(--sand-100);
  padding: clamp(22px, 3vw, 40px);
  min-height: 420px;
}

.panel[hidden] { display: none; }

.panel__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 2.4vw, 30px);
}

.panel__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(21px, 2vw, 27px);
  line-height: 1.4;
}

.panel__origin {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.panel__grid {
  display: grid;
  gap: clamp(22px, 2.6vw, 34px);
}

@media (min-width: 720px) {
  .panel__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 232px); }
}

.panel__diagram {
  order: -1;
}

@media (min-width: 720px) {
  .panel__diagram { order: 0; align-self: start; }
}

.panel__diagram svg {
  display: block;
  width: 100%;
  height: auto;
  color: var(--clay);
}

.panel__diagram figcaption {
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  color: var(--muted-2);
  text-transform: uppercase;
  margin-top: 10px;
  direction: ltr;
  text-align: center;
}

.fld {
  padding-block: 14px;
  border-top: 1px solid var(--line-soft);
}

.fld:first-child { border-top: 0; padding-top: 0; }

.fld__k {
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--clay);
  display: block;
  margin-bottom: 6px;
}

.fld__v {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
}

.fld--out .fld__v {
  font-weight: 500;
  color: var(--ink);
}

/* ---------- 10. المسار التشغيلي ---------- */
.flow {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  counter-reset: flow;
}

@media (min-width: 760px) {
  .flow { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

.flow__item {
  position: relative;
  padding: clamp(22px, 2.4vw, 30px) 0 clamp(24px, 2.6vw, 34px);
  border-bottom: 1px solid var(--line);
  padding-inline-end: clamp(14px, 2vw, 26px);
}

@media (min-width: 760px) {
  .flow__item {
    border-bottom: 0;
    border-inline-end: 1px solid var(--line);
    padding-inline-end: clamp(14px, 1.6vw, 22px);
  }
  .flow__item:first-child { padding-inline-start: 0; }
  .flow__item:last-child { border-inline-end: 0; padding-inline-end: 0; }
}

@media (max-width: 759px) {
  .flow__item { padding-inline-start: 0; }
}

.flow__num {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--clay);
  display: block;
  margin-bottom: 14px;
}

.flow__item h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.55;
}

.flow__item p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0;
}

/* ---------- 11. المساران ---------- */
.tracks {
  display: grid;
  gap: clamp(30px, 4vw, 0px);
  border-top: 1px solid var(--line);
}

@media (min-width: 860px) {
  .tracks { grid-template-columns: 1fr 1fr; }
}

.track {
  padding-block: clamp(28px, 3.4vw, 46px);
  padding-inline-end: clamp(0px, 3vw, 46px);
}

@media (min-width: 860px) {
  .track + .track {
    border-inline-start: 1px solid var(--line);
    padding-inline: clamp(24px, 3vw, 46px) clamp(0px, 3vw, 46px);
  }
}

.track__k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay);
  display: block;
  margin-bottom: 16px;
}

.track h3 {
  font-size: clamp(20px, 1.9vw, 26px);
  margin-bottom: 14px;
}

.track p { color: var(--muted); font-size: 16px; max-width: 46ch; }

.track ul {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.track li {
  font-size: 14.5px;
  line-height: 1.85;
  padding-block: 12px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-2);
  display: flex;
  gap: 12px;
}

.track li::before {
  content: "—";
  color: var(--clay);
  flex: 0 0 auto;
}

/* ---------- 12. الأثر ---------- */
.impact { background: var(--ink); color: var(--sand-100); border-top: 0; }

.impact .sec-head { border-bottom: 1px solid var(--line-invert); padding-bottom: clamp(30px, 4vw, 52px); }

.impact h2 { color: var(--sand-50); }

.impact .eyebrow { color: var(--clay-soft); }
.impact .eyebrow__rule { background: var(--clay-soft); }

.impact .lead { color: rgba(240, 234, 220, .62); }

.impact__quote {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(21px, 2.7vw, 36px);
  line-height: 1.62;
  max-width: 24ch;
  margin: 0 0 clamp(36px, 4vw, 64px);
  color: var(--sand-50);
}

.impact__quote span { color: var(--clay-soft); }

.outcomes {
  display: grid;
  border-top: 1px solid var(--line-invert);
}

@media (min-width: 700px) { .outcomes { grid-template-columns: 1fr 1fr; } }

.outcome {
  padding-block: clamp(24px, 2.8vw, 36px);
  padding-inline-end: clamp(0px, 3vw, 40px);
  border-bottom: 1px solid var(--line-invert);
}

@media (min-width: 700px) {
  .outcome:nth-child(odd) {
    border-inline-end: 1px solid var(--line-invert);
    padding-inline-end: clamp(24px, 3vw, 40px);
  }
  .outcome:nth-child(even) { padding-inline-start: clamp(24px, 3vw, 40px); }
}

.outcome__k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay-soft);
  display: block;
  margin-bottom: 12px;
}

.outcome h3 {
  color: var(--sand-50);
  font-size: 17.5px;
  margin-bottom: 8px;
}

.outcome p {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(240, 234, 220, .58);
  margin: 0;
}

/* ---------- 13. النموذج ---------- */
.join {
  display: grid;
  gap: clamp(30px, 4vw, 64px);
}

@media (min-width: 940px) {
  .join { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); }
}

.join__aside h2 { margin-bottom: 18px; }
.join__aside p { color: var(--muted); max-width: 40ch; font-size: 16px; }

.join__roles {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.join__roles li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-block: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.join__roles .mono { color: var(--muted-2); font-size: 10px; }

.form {
  display: grid;
  gap: 20px;
  border: 1px solid var(--line);
  padding: clamp(22px, 3vw, 38px);
  background: var(--sand-100);
}

.form__row {
  display: grid;
  gap: 20px;
}

@media (min-width: 620px) {
  .form__row--2 { grid-template-columns: 1fr 1fr; }
}

.field { display: grid; gap: 8px; }

.field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.field__opt {
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: .12em;
  color: var(--muted-2);
  text-transform: uppercase;
  font-weight: 400;
}

.field input,
.field select,
.field textarea {
  font-family: var(--f-body);
  font-size: 15px;
  color: var(--ink);
  background: var(--sand-50);
  border: 1px solid var(--line);
  border-radius: 1px;
  padding: 13px 14px;
  width: 100%;
  min-height: 48px;
  transition: border-color .2s, background .2s;
}

.field textarea { min-height: 108px; resize: vertical; line-height: 1.8; }

.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(0% + 18px) calc(50% + 2px), calc(0% + 13px) calc(50% + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-inline-start: 34px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--clay);
  background: #fff;
}

.field.is-error input,
.field.is-error select,
.field.is-error textarea { border-color: #A32020; }

.field__err {
  font-size: 12px;
  color: #A32020;
  display: none;
}

.field.is-error .field__err { display: block; }

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.form__note {
  font-size: 12px;
  color: var(--muted-2);
  max-width: 34ch;
  line-height: 1.7;
  margin: 0;
}

.form__done {
  display: none;
  border: 1px solid var(--clay);
  background: rgba(164, 85, 44, .06);
  padding: 18px 20px;
  font-size: 14.5px;
  line-height: 1.8;
}

.form__done.is-on { display: block; }
.form__done b { color: var(--clay-deep); }

.form__done .mono { color: var(--clay); display: block; margin-bottom: 6px; }

/* ---------- 14. التذييل ---------- */
.site-footer {
  background: var(--ink);
  color: var(--sand-200);
  padding-block: clamp(40px, 5vw, 68px) 26px;
}

.footer__top {
  display: grid;
  gap: clamp(26px, 3vw, 46px);
  padding-bottom: clamp(30px, 3.6vw, 50px);
  border-bottom: 1px solid var(--line-invert);
}

@media (min-width: 800px) {
  .footer__top { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); }
}

.site-footer .brand__name { color: var(--sand-50); }
.footer__tag {
  font-family: "Amiri", serif;
  font-weight: 700;
  font-size: clamp(20px, 1.9vw, 26px);
  color: var(--sand-100);
  margin: 20px 0 10px;
  line-height: 1.5;
}

.footer__desc {
  font-size: 14px;
  color: rgba(240, 234, 220, .6);
  max-width: 34ch;
  line-height: 1.85;
}

.footer__col h4 {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay-soft);
  font-weight: 500;
  margin-bottom: 16px;
}

.footer__col ul { list-style: none; margin: 0; padding: 0; }

.footer__col li { margin-bottom: 10px; }

.footer__col a {
  font-size: 14px;
  color: rgba(240, 234, 220, .68);
  transition: color .2s;
}

.footer__col a:hover { color: var(--sand-50); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: rgba(240, 234, 220, .55);
  direction: ltr;
}

/* ---------- 15. الحركة ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* رابط التجاوز */
.skip {
  position: absolute;
  inset-inline-start: -9999px;
  top: 10px;
  background: var(--clay);
  color: #fff;
  padding: 12px 18px;
  z-index: 200;
  font-size: 14px;
}
.skip:focus { inset-inline-start: 10px; }

/* ---------- 16. صقل صغير ---------- */
.hr-thin { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ============================================================
   17. طبقة الزخرفة — مشربية، إفريز سدو، نجمة ثمانية
   الزخرفة هنا ليست إطاراً: هي المادة نفسها، بنفس منطق الهيكل.
   ============================================================ */

/* ---------- 17.1 ماء الزخرفة في الأقسام الداكنة ---------- */
.hero > .wrap,
.impact > .wrap,
.site-footer > .wrap { position: relative; z-index: 1; }

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/orn-lattice-light.svg") repeat 0 0 / 78px 78px;
  opacity: .17;
  mask-image: radial-gradient(58% 62% at 20% 46%, #000 0%, rgba(0, 0, 0, .45) 55%, transparent 78%);
  -webkit-mask-image: radial-gradient(58% 62% at 20% 46%, #000 0%, rgba(0, 0, 0, .45) 55%, transparent 78%);
  pointer-events: none;
}

.impact::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/orn-lattice-light.svg") repeat 0 0 / 64px 64px;
  opacity: .12;
  mask-image: radial-gradient(56% 70% at 84% 30%, #000 0%, transparent 74%);
  -webkit-mask-image: radial-gradient(56% 70% at 84% 30%, #000 0%, transparent 74%);
  pointer-events: none;
}

.impact::before { background-image: url("../img/orn-frieze-light.svg"); opacity: .42; }

.site-footer { position: relative; overflow: hidden; }

.site-footer::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 26px;
  background: url("../img/orn-frieze-light.svg") repeat-x left top / 120px 26px;
  opacity: .4;
}

.site-footer .footer__top,
.site-footer .footer__bottom { position: relative; z-index: 1; }

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/orn-lattice-light.svg") repeat 0 0 / 58px 58px;
  opacity: .09;
  mask-image: radial-gradient(50% 80% at 12% 100%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(50% 80% at 12% 100%, #000 0%, transparent 70%);
  pointer-events: none;
}

/* ---------- 17.2 البطاقات: أرضية مشربية + نجوم الزوايا ---------- */
.panel,
.form,
.step__eg,
.bs-card {
  position: relative;
  background-image: url("../img/orn-star.svg");
  background-repeat: no-repeat;
  background-size: 12px 12px;
  background-position:
    9px 9px,
    calc(100% - 9px) 9px,
    9px calc(100% - 9px),
    calc(100% - 9px) calc(100% - 9px);
  background-image:
    url("../img/orn-star.svg"), url("../img/orn-star.svg"),
    url("../img/orn-star.svg"), url("../img/orn-star.svg");
}

.panel::before,
.form::before,
.step__eg::before,
.bs-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/orn-lattice.svg") repeat 0 0 / 42px 42px;
  opacity: .07;
  pointer-events: none;
  z-index: 0;
}

.panel > *,
.form > *,
.step__eg > *,
.bs-card > * { position: relative; z-index: 1; }

/* البطاقة الداكنة في ورقة الهوية */
.bs-card--ink {
  background-image:
    url("../img/orn-star-light.svg"), url("../img/orn-star-light.svg"),
    url("../img/orn-star-light.svg"), url("../img/orn-star-light.svg");
}
.bs-card--ink::before { background-image: url("../img/orn-lattice-light.svg"); opacity: .10; }

/* ---------- 17.3 النجمة كعلامة تعداد ---------- */
.step__eg-label,
.track__k,
.outcome__k,
.flow__num,
.panel__origin,
.join__roles .mono {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.step__eg-label::before,
.track__k::before,
.outcome__k::before,
.flow__num::before,
.panel__origin::before,
.join__roles .mono::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  background: url("../img/orn-star.svg") no-repeat center / contain;
  opacity: .9;
}

.impact .outcome__k::before { background-image: url("../img/orn-star-light.svg"); }

/* ---------- 17.4 إفريز أسفل الواجهة ---------- */
.hero__strip { border-top: 0; padding-top: 34px; position: relative; }

.hero__strip::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 24px;
  background: url("../img/orn-frieze-light.svg") repeat-x left top / 120px 26px;
  opacity: .34;
}

/* ---------- 17.5 الشرائح في قسم التشغيل ---------- */
.flow { border-top: 0; position: relative; }

.flow::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 26px;
  background: url("../img/orn-frieze.svg") repeat-x left top / 120px 26px;
  opacity: .3;
}

.flow__item:first-child { padding-top: 60px; }

@media (min-width: 760px) {
  .flow__item:first-child { padding-top: 34px; }
}

/* ---------- 17.6 حبر نسخي للاقتباسات ---------- */
.font-naskh {
  font-family: "Amiri", "Noto Naskh Arabic", serif;
  font-weight: 400;
  line-height: 1.75;
}

/* ---------- 17.7 الاقتباس والخلاصة بخط النسخ ---------- */
.problem__verdict {
  font-family: "Amiri", serif;
  font-size: clamp(23px, 2.9vw, 38px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

.impact__quote {
  font-family: "Amiri", serif;
  font-weight: 700;
  font-size: clamp(24px, 3.1vw, 42px);
  line-height: 1.55;
}

/* ---------- 17.8 زوايا الأقسام الداكنة ---------- */
.impact .sec-head { position: relative; }

/* ---------- 17.9 حلقة تزيينية حول شارة الهوية ---------- */
.bs-hero { position: relative; overflow: hidden; }

.bs-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/orn-lattice-light.svg") repeat 0 0 / 74px 74px;
  opacity: .14;
  mask-image: radial-gradient(46% 70% at 26% 50%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(46% 70% at 26% 50%, #000 0%, transparent 72%);
  pointer-events: none;
}

.bs-hero > .wrap { position: relative; z-index: 1; }

/* ---------- 17.10 النجوم في أزرار الاختيار ---------- */
.tab[aria-selected="true"] .mono::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-inline-end: 5px;
  background: url("../img/orn-star-solid.svg") no-repeat center / contain;
}


/* ---------- 18. حزام نسيجي فاصل ---------- */
.belt {
  height: 52px;
  background: var(--sand-200) url("../img/orn-frieze.svg") repeat-x center center / 120px 26px;
  border-block: 1px solid var(--line);
  position: relative;
}

.belt--dark {
  background: var(--ink-2) url("../img/orn-frieze-light.svg") repeat-x center center / 120px 26px;
  border-color: var(--line-invert);
}

/* ---------- 19. المناطق ---------- */
.regions {
  display: grid;
  border-top: 1px solid var(--line);
}

@media (min-width: 700px) { .regions { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1240px) { .regions { grid-template-columns: repeat(4, 1fr); } }

.region {
  padding: clamp(22px, 2.6vw, 34px) 0 clamp(26px, 3vw, 38px);
  padding-inline-end: clamp(0px, 2.4vw, 28px);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 1240px) {
  .region {
    border-bottom: 0;
    border-inline-end: 1px solid var(--line);
    padding-inline: 0 clamp(16px, 2vw, 26px);
  }
  .region:first-child { padding-inline-start: 0; }
  .region:last-child { border-inline-end: 0; padding-inline-end: 0; }
}

.region { position: relative; }

/* حاشية نسيجية أعلى كل عمود — إفريز سدو قصير */
.region::before {
  content: "";
  display: block;
  height: 20px;
  margin-bottom: 18px;
  background: url("../img/orn-frieze.svg") repeat-x right top / 120px 26px;
  opacity: .4;
}

.region__k {
  font-family: "Amiri", serif;
  font-size: clamp(27px, 2.7vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.region__k::before {
  content: "";
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  background: url("../img/orn-star.svg") no-repeat center / contain;
  opacity: .95;
}

.region__craft {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clay);
  display: block;
  margin-bottom: 14px;
  direction: ltr;
  text-align: right;
}

.region h3 {
  font-size: 16.5px;
  margin-bottom: 8px;
}

.region p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  .hero::after, .impact::after, .site-footer::after { opacity: .1; }
}


.section__endnote {
  margin-top: clamp(24px, 3vw, 40px);
  font-size: 13px;
  color: var(--muted-2);
  font-family: var(--f-mono);
  letter-spacing: .04em;
  direction: ltr;
  text-align: left;
}