/* ══════════════════════════════════════════════════════
   MOBCITY — CASE STUDY  v2
   Design: Editorial scroll · Chapter-driven · Dark hero
   Fonts : Plus Jakarta Sans (shell) · IBM Plex Sans Arabic (DS)
══════════════════════════════════════════════════════ */

@font-face {
  font-family: 'SST Arabic';
  src: local('IBM Plex Sans Arabic Bold'),
       url('https://fonts.gstatic.com/s/ibmplexsansarabic/v12/Qw3MZRtWPQDuXsYgAoyr-yFEXJM0W4oG7CrwAA.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'SST Arabic';
  src: local('IBM Plex Sans Arabic Medium'),
       url('https://fonts.gstatic.com/s/ibmplexsansarabic/v12/Qw3MZRtWPQDuXsYgAoyr-yFEXJM0W4oG7C3LAA.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'SST Arabic';
  src: local('IBM Plex Sans Arabic'),
       url('https://fonts.gstatic.com/s/ibmplexsansarabic/v12/Qw3NZRtWPQDuXsYgAoyr-yFEXJM0W4oG7A.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}

/* ── RESET ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── TOKENS ────────────────────────── */
:root {
  --grey-50:   #F6F6F6;
  --grey-100:  #E0E0E0;
  --grey-300:  #BDC1C8;
  --grey-500:  #9DA1A7;
  --grey-700:  #787A80;
  --grey-900:  #1C1C1C;

  --primary-50:  #E9F4F9;
  --primary-100: #E1ECF1;
  --primary-500: #2790C3;

  --success: #00B517;
  --warning: #FF9017;
  --error:   #FA3434;
  --white:   #FFFFFF;

  --bg:      #FFFFFF;
  --bg-alt:  #F7F7F7;
  --ink:     #1C1C1C;
  --subtle:  #787A80;
  --border:  #E8E8E8;

  --primary: var(--primary-500);
  --primary-hover: #1f7cad;

  --r-xs: 4px;
  --r-sm: 8px;
  --r:    12px;
  --r-lg: 20px;
  --t: 0.4s cubic-bezier(0.22, 1, 0.36, 1);

  --rail-w: 3px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: 'Plus Jakarta Sans', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  direction: ltr;
}

.design-system, .mc-header, .mc-footer,
.product-card, .product-card-list, .plp, .pdp,
.checkout, .page-hero-banner, .brands-row, .page-section {
  font-family: 'SST Arabic', 'IBM Plex Sans Arabic', 'Helvetica Neue', Arial, sans-serif;
}

img  { display: block; max-width: 100%; height: auto; }
a    { text-decoration: none; color: inherit; }
strong { font-weight: 700; }
button { font-family: inherit; cursor: pointer; }

.site-gridlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  justify-content: center;
}
.site-gridlines::before {
  content: "";
  width: min(1100px, calc(100% - 80px));
  height: 100%;
  background:
    linear-gradient(rgba(0,0,0,0.04)) 0 0/1px 100% no-repeat,
    linear-gradient(rgba(0,0,0,0.04)) 25% 0/1px 100% no-repeat,
    linear-gradient(rgba(0,0,0,0.04)) 50% 0/1px 100% no-repeat,
    linear-gradient(rgba(0,0,0,0.04)) 75% 0/1px 100% no-repeat,
    linear-gradient(rgba(0,0,0,0.04)) 100% 0/1px 100% no-repeat;
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--grey-100); border-radius: 99px; }

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  background: var(--ink);
  color: var(--white);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.8125rem;
  font-weight: 700;
  z-index: 300;
  transition: top var(--t);
}
.skip-link:focus-visible { top: 12px; }


/* ══════════════════════════════════════════════════════
   PROGRESS NAV
══════════════════════════════════════════════════════ */
.progress-nav {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 150;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.progress-nav__item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.progress-nav__dot {
  width: var(--rail-w);
  height: 24px;
  background: var(--grey-100);
  border-radius: 99px;
  transition: width var(--t), height var(--t), background var(--t);
  flex-shrink: 0;
}

.progress-nav__label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-300);
  opacity: 0;
  transform: translateX(8px);
  transition: opacity var(--t), transform var(--t), color var(--t);
  white-space: nowrap;
}

.progress-nav__item:hover .progress-nav__label,
.progress-nav__item.active .progress-nav__label {
  opacity: 1;
  transform: translateX(0);
}

.progress-nav__item.active .progress-nav__dot {
  width: 4px;
  height: 40px;
  background: var(--ink);
}

.progress-nav__item:hover .progress-nav__dot {
  background: var(--grey-500);
}

.progress-nav__item.active .progress-nav__label { color: var(--ink); }


/* ══════════════════════════════════════════════════════
   HEADER
══════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(255,255,255,0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  z-index: 200;
  transition: background var(--t), backdrop-filter var(--t), border-color var(--t), box-shadow var(--t);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 24px rgba(0,0,0,0.05);
}

.site-header:not(.scrolled) .back-link,
.site-header:not(.scrolled) .site-logo { color: rgba(255,255,255,0.7); }
.site-header:not(.scrolled) .back-link:hover { color: #fff; }

.back-link {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.875rem; font-weight: 500; color: var(--subtle);
  transition: color var(--t);
}
.back-link i { transition: transform var(--t); }
.back-link:hover { color: var(--ink); }
.back-link:hover i { transform: translateX(-3px); }

.site-logo { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.01em; }


/* ══════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════ */
.hero {
  min-height: 100svh;
  background: var(--grey-900);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 80px 40px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 70vw;
  height: 60vh;
  background: radial-gradient(ellipse at center, rgba(39,144,195,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__text {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary-500);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.hero__eyebrow::before,
.hero__eyebrow::after {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--primary-500);
  opacity: 0.5;
}

.hero__title {
  font-size: clamp(5rem, 14vw, 11rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.88;
  color: #FFFFFF;
  margin-bottom: 28px;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.4);
  margin-bottom: 36px;
  letter-spacing: 0.01em;
}

.hero__tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  margin-bottom: 80px;
}
.hero__meta strong { color: rgba(255,255,255,0.75); margin-right: 3px; }

.hero__cover {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
}

.hero__cover-frame {
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
  border-bottom: none;
  box-shadow: 0 -32px 80px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.05);
}
.hero__cover-frame img { width: 100%; display: block; }

.hero__cover-meta {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  border: 1px solid rgba(255,255,255,0.08);
  border-top: none;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.04);
}

.hero__scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  animation: bounce 2.4s ease-in-out infinite;
}
.hero__scroll-cue i { font-size: 1rem; }


/* ══════════════════════════════════════════════════════
   EXECUTIVE SUMMARY
══════════════════════════════════════════════════════ */
.exec-summary {
  padding: 72px 40px;
  background: linear-gradient(180deg, #0f1218 0%, #171c24 100%);
}

.exec-summary__inner {
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.exec-summary__eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 12px;
}

.exec-summary__title {
  color: var(--white);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 760px;
  margin-bottom: 26px;
}

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

.exec-summary__item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 18px;
}

.exec-summary__item h3 {
  font-size: 0.95rem;
  color: var(--primary-500);
  margin-bottom: 8px;
}

.exec-summary__item p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.78);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}


/* ══════════════════════════════════════════════════════
   CHAPTER DIVIDERS
══════════════════════════════════════════════════════ */
.chapter {
  padding: 120px 40px;
  display: flex;
  align-items: center;
  min-height: 60vh;
  position: relative;
  overflow: hidden;
}

.chapter--dark {
  background: var(--grey-900);
  color: var(--white);
}

.chapter--light { background: var(--bg-alt); }

.chapter__inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.chapter__inner--wide {
  grid-template-columns: 1fr;
  max-width: 720px;
}

.chapter__num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-500);
  margin-bottom: 20px;
}

.chapter__title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 24px;
}

.chapter--dark .chapter__title { color: #FFFFFF; }

.chapter__desc {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--subtle);
  max-width: 480px;
}

.chapter--dark .chapter__desc { color: rgba(255,255,255,0.45); }

.chapter__side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chapter__stats {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r);
  overflow: hidden;
}
.chapter--light .chapter__stats { border-color: var(--border); }

.chapter__stat {
  padding: 22px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.chapter--light .chapter__stat { border-bottom-color: var(--border); }
.chapter__stat:last-child { border-bottom: none; }

.chapter__stat-num {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--white);
}
.chapter--light .chapter__stat-num { color: var(--ink); }

.chapter__stat-label {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
}
.chapter--light .chapter__stat-label { color: var(--subtle); }


/* ══════════════════════════════════════════════════════
   CONTENT SECTIONS
══════════════════════════════════════════════════════ */
.section {
  padding: 96px 40px;
  overflow-x: clip;
}
.section--alt { background: var(--bg-alt); }
.section--dark {
  background: var(--grey-900);
  color: var(--white);
}

.section__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 0 48px;
}

/* Prevent wide DS organisms from blowing out the grid column */
.section__content {
  min-width: 0;
  overflow: hidden;
}

.section__label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--grey-100);
  padding-top: 10px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  user-select: none;
  height: fit-content;
}
.section--dark .section__label { color: rgba(255,255,255,0.15); }
.section--alt .section__label  { color: var(--grey-300); }

.section__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
  margin-bottom: 14px;
}
.section--dark .section__title { color: var(--white); }

.section__desc {
  font-size: 1rem;
  color: var(--subtle);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 48px;
}
.section--dark .section__desc { color: rgba(255,255,255,0.45); }

.process-framework {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 26px;
}

.process-framework__item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.process-framework__item span {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-500);
  margin-bottom: 6px;
}

.process-framework__item p {
  font-size: 0.82rem;
  color: var(--subtle);
  line-height: 1.45;
}

.section-kpi {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.section-kpi__item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.section-kpi__item span {
  display: inline-block;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--grey-500);
  margin-bottom: 6px;
}

.section-kpi__item strong {
  display: block;
  font-size: 1.3rem;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
  color: var(--ink);
}

.section-kpi__item p {
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--subtle);
}

.decision-note {
  border-left: 3px solid var(--primary-500);
  background: linear-gradient(90deg, rgba(39,144,195,0.09) 0%, rgba(39,144,195,0.02) 100%);
  border-radius: 0 12px 12px 0;
  padding: 14px 16px;
  margin-bottom: 24px;
}

.decision-note h3 {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-500);
  margin-bottom: 6px;
}

.decision-note p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--subtle);
}

.ds-state-matrix {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.ds-state-matrix__head,
.ds-state-matrix__row {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr 1.2fr;
  gap: 12px;
  padding: 10px 12px;
}

.ds-state-matrix__head {
  background: var(--grey-50);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-700);
}

.ds-state-matrix__row {
  font-size: 0.83rem;
  color: var(--subtle);
  border-top: 1px solid var(--border);
}

.ds-state-matrix__row span:first-child {
  color: var(--ink);
  font-weight: 600;
}

.edge-states {
  margin: 18px 0 20px;
}

.edge-states__title {
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-700);
  margin-bottom: 10px;
}

.edge-states__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.edge-states__item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.edge-states__item span {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--ink);
}

.edge-states__item p {
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--subtle);
}

.ds-guidance {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 8px;
}

.ds-guidance p {
  font-size: 0.84rem;
  color: var(--subtle);
  line-height: 1.5;
}

.ds-changelog {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: 8px;
}

.ds-changelog li {
  font-size: 0.84rem;
  color: var(--subtle);
  line-height: 1.45;
}

.traceability {
  margin: 18px 0;
}

.traceability__title,
.test-protocol__title {
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-700);
  margin-bottom: 10px;
}

.traceability__table {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg);
}

.traceability__head,
.traceability__row {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1fr;
  gap: 10px;
  padding: 10px 12px;
}

.traceability__head {
  background: var(--grey-50);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-700);
}

.traceability__row {
  border-top: 1px solid var(--border);
  font-size: 0.81rem;
  color: var(--subtle);
  line-height: 1.45;
}

.test-protocol {
  margin: 16px 0 20px;
}

.test-protocol__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.test-protocol__item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.test-protocol__item span {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--primary-500);
  margin-bottom: 6px;
}

.test-protocol__item p {
  font-size: 0.84rem;
  color: var(--subtle);
  line-height: 1.45;
}

.mc-plp-no-results {
  margin-top: 16px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  background: var(--grey-50);
}

.mc-plp-no-results i {
  font-size: 1.1rem;
  color: var(--grey-700);
  margin-bottom: 8px;
}

.mc-plp-no-results h4 {
  font-size: 0.96rem;
  margin-bottom: 6px;
}

.mc-plp-no-results p {
  font-size: 0.84rem;
  color: var(--subtle);
  margin-bottom: 10px;
}

.mc-plp-no-results__actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}


/* ── CARDS ─────────────────────────── */
.card-grid { display: grid; gap: 16px; margin-bottom: 32px; }
.two-col   { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 28px 32px;
  transition: box-shadow var(--t), transform var(--t);
}
.section--alt .card { background: var(--bg); }
.section--dark .card {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.8);
}
.card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.08); transform: translateY(-2px); }

.card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.card p { font-size: 0.9375rem; color: var(--subtle); line-height: 1.65; }
.section--dark .card p { color: rgba(255,255,255,0.45); }


/* ── CHALLENGE BLOCK ───────────────── */
.challenge-block {
  background: var(--grey-900);
  color: var(--white);
  border-radius: var(--r);
  padding: 40px;
  margin-bottom: 36px;
}
.challenge-block__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-500);
  margin-bottom: 10px;
}
.challenge-block__title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.challenge-block p {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 20px;
}
.challenge-block__target {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
}
.challenge-block__target i { color: var(--primary-500); flex-shrink: 0; margin-top: 2px; }


/* ── STATS ─────────────────────────── */
.stats-row {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
}
.stat {
  flex: 1;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-right: 1px solid var(--border);
  transition: background var(--t);
}
.stat:last-child { border-right: none; }
.stat:hover { background: var(--bg-alt); }
.stat__num { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.04em; }
.stat__desc { font-size: 0.8125rem; color: var(--subtle); line-height: 1.4; }


/* ── STEPS ─────────────────────────── */
.steps { display: flex; flex-direction: column; margin-bottom: 28px; }
.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--t);
}
.steps .step:first-child { border-top: 1px solid var(--border); }
.step__num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--grey-300);
  min-width: 24px;
  padding-top: 4px;
}
.step__title { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.step__desc  { font-size: 0.9rem; color: var(--subtle); line-height: 1.6; }

.flexibility-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--subtle);
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-bottom: 48px;
}
.flexibility-note i { color: var(--primary); }


/* ── SUBSECTION ─────────────────────── */
.subsection { margin-top: 48px; }
.subsection__title { font-size: 1.375rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; }
.subsection__desc  { font-size: 0.9375rem; color: var(--subtle); line-height: 1.65; margin-bottom: 24px; }

.icon-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.icon-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 0.9rem;
  color: var(--subtle);
  line-height: 1.5;
  transition: box-shadow var(--t), border-color var(--t);
}
.icon-item:hover { border-color: var(--grey-300); box-shadow: 0 4px 16px rgba(0,0,0,0.04); }
.icon-item i { font-size: 1.2rem; color: var(--primary); flex-shrink: 0; margin-top: 1px; }


/* ── PERSONAS ───────────────────────── */
.personas-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.persona-card {
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  transition: box-shadow var(--t), transform var(--t), border-color var(--t);
  background: var(--bg);
}
.section--alt .persona-card { background: var(--bg); }
.persona-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.09); transform: translateY(-3px); border-color: transparent; }
.persona-card__img { width: 52px; height: 52px; border-radius: 50%; overflow: hidden; margin-bottom: 16px; background: var(--grey-50); }
.persona-card__img img { width: 100%; height: 100%; object-fit: cover; }
.persona-card__name { font-size: 0.9375rem; font-weight: 700; margin-bottom: 6px; }
.persona-card__desc { font-size: 0.875rem; color: var(--subtle); line-height: 1.58; margin-bottom: 10px; }
.persona-card__meta { display: flex; flex-direction: column; gap: 6px; border-top: 1px solid var(--border); padding-top: 10px; margin-top: auto; }
.persona-card__pain,
.persona-card__need { display: flex; align-items: flex-start; gap: 6px; font-size: 0.78rem; line-height: 1.45; }
.persona-card__pain { color: #c0392b; }
.persona-card__pain i { color: #c0392b; flex-shrink: 0; margin-top: 2px; }
.persona-card__need { color: #27ae60; }
.persona-card__need i { color: #27ae60; flex-shrink: 0; margin-top: 2px; }


/* ── JOURNEY ─────────────────────────── */
.journey { display: flex; flex-direction: column; }
.journey__item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.journey .journey__item:first-child { border-top: 1px solid var(--border); }
.journey__icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--primary);
  background: var(--bg);
}
.section--alt .journey__icon { background: var(--bg); }
.journey__body h4 { font-size: 0.9375rem; font-weight: 700; margin-bottom: 4px; }
.journey__body p  { font-size: 0.9rem; color: var(--subtle); line-height: 1.6; margin-bottom: 6px; }
.journey__emotion {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.73rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 99px;
  margin-top: 4px;
}
.journey__emotion--neutral { background: #f3f3f3; color: #666; }
.journey__emotion--positive { background: #e6f7ec; color: #1a7a3e; }
.journey__emotion--pain { background: #fdf0ed; color: #b03a2e; }
.journey__emotion--delight { background: #eef3ff; color: #2c4ab5; }


/* ══════════════════════════════════════════════════════
   DESIGN SYSTEM BLOCK
══════════════════════════════════════════════════════ */

/* ── RTL context note ────────────── */
.rtl-context-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--primary-50);
  border: 1px solid #c8dfed;
  border-radius: var(--r);
  padding: 14px 18px;
  font-size: 0.87rem;
  color: #1a4e6e;
  line-height: 1.55;
  margin-bottom: 28px;
}
.rtl-context-note i { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; color: var(--primary); }

.design-system { }

.ds-heading {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}
.ds-heading__sub { font-size: 0.875rem; font-weight: 400; color: var(--subtle); margin-left: 12px; }

/* ── Floating Design System button ── */
.ds-fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--p-700);
  color: #fff;
  border-radius: var(--r-pill);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(21,88,125,0.35), 0 2px 8px rgba(0,0,0,0.15);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s, opacity 0.3s;
  opacity: 1;
}
.ds-fab:hover {
  background: var(--p-500);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(21,88,125,0.4);
}
.ds-fab i { font-size: 1.125rem; flex-shrink: 0; }

.ds-block {
  margin-bottom: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
}
.ds-block:last-child { border-bottom: none; }

.ds-block__label {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--subtle);
  margin-bottom: 24px;
}
.ds-block__label i { font-size: 1rem; }

.ds-comp-section { margin-bottom: 20px; }
.ds-comp-label { font-size: 0.75rem; font-weight: 500; color: var(--grey-300); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; }


/* Typography specimen */
.ds-type-hero {
  display: flex; align-items: baseline; gap: 24px;
  margin-bottom: 28px; padding: 24px;
  background: var(--grey-50); border-radius: var(--r);
}
.ds-type-hero__font { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; }
.ds-type-hero__weights { display: flex; gap: 20px; font-size: 1rem; color: var(--subtle); }
.ds-type-hero__weights span { color: var(--ink); }

.type-scale { display: flex; flex-direction: column; gap: 0; }
.type-scale__row {
  display: grid; grid-template-columns: 200px 1fr;
  align-items: center; gap: 24px;
  padding: 20px 0; border-bottom: 1px solid var(--border);
}
.type-scale__row:last-child { border-bottom: none; }
.type-scale__tag  { font-size: 0.8125rem; font-weight: 600; color: var(--ink); margin-bottom: 2px; }
.type-scale__info { font-size: 0.75rem; color: var(--subtle); margin-bottom: 2px; }
.type-scale__use  { font-size: 0.7rem; color: var(--grey-300); text-transform: uppercase; letter-spacing: 0.08em; }
.type-scale__preview { color: var(--ink); }

/* Colour palette */
.ds-color-group { margin-bottom: 24px; }
.ds-color-group__title { font-size: 0.75rem; font-weight: 600; color: var(--subtle); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.color-row { display: flex; flex-wrap: wrap; gap: 10px; }
.color-swatch {
  width: 100px; height: 72px; border-radius: var(--r-sm);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 8px 10px; gap: 2px;
}
.swatch-name { font-size: 0.6875rem; font-weight: 600; }
.swatch-hex  { font-size: 0.625rem; opacity: 0.65; }


/* ══════════════════════════════════════════════════════
   ATOMIC COMPONENTS
══════════════════════════════════════════════════════ */
.comp-row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; border-radius: var(--r-sm); font-weight: 600;
  font-family: inherit; white-space: nowrap;
  transition: background var(--t), color var(--t), transform 0.15s, box-shadow var(--t), border-color var(--t);
}
.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

.btn--lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--r); }
.btn--md { padding: 10px 20px; font-size: 0.9rem; }
.btn--sm { padding: 7px 14px; font-size: 0.8125rem; }

.btn--primary  { background: var(--primary); color: #ffffff; }
.btn--primary:hover { background: var(--primary-hover); }

.btn--outline  { background: transparent; border: 1.5px solid var(--grey-900); color: var(--grey-900); }
.btn--outline:hover { background: var(--grey-900); color: var(--white); }

.btn--ghost    { background: transparent; color: var(--grey-900); }
.btn--ghost:hover { background: var(--grey-50); }

.btn--danger   { background: var(--error); color: var(--white); }
.btn--danger:hover { background: #d42b2b; }

.btn--icon i    { font-size: 1em; }
.btn--icon-only { padding: 10px; border-radius: var(--r-sm); background: transparent; border: 1px solid var(--border); color: var(--grey-700); }
.btn--icon-only:hover { background: var(--grey-50); border-color: var(--grey-300); }
.btn--icon-only.btn--sm  { padding: 7px; }
.btn--icon-only.btn--lg  { padding: 14px; border-radius: var(--r); }
.btn--icon-only.active { color: var(--error); border-color: var(--error); background: #FFF0F0; }
.btn--full { width: 100%; }

.cart-count {
  position: absolute; top: -2px; right: -2px;
  background: var(--primary); color: #ffffff;
  font-size: 0.625rem; font-weight: 700;
  min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 99px; display: flex; align-items: center; justify-content: center;
}

.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: 99px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.04em;
}
.badge--new     { background: #E6F4EA; color: #1A7232; }
.badge--sale    { background: #FFF0F0; color: var(--error); }
.badge--hot     { background: #FFF3E6; color: var(--warning); }
.badge--out     { background: var(--grey-50); color: var(--grey-700); }
.badge--success { background: #E6F4EA; color: #1A7232; }
.badge--neutral { background: var(--grey-50); color: var(--grey-700); }

.tag {
  display: inline-block; padding: 5px 14px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 99px; font-size: 0.8125rem; font-weight: 500;
  color: rgba(255,255,255,0.55);
  transition: border-color var(--t), color var(--t), background var(--t);
}
.tag:hover { border-color: rgba(255,255,255,0.5); color: rgba(255,255,255,0.85); }

.tag-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 12px; border: 1px solid var(--border); border-radius: 99px;
  font-size: 0.8rem; font-weight: 500; color: var(--subtle); background: var(--white);
  transition: border-color var(--t);
}
.tag-chip:hover { border-color: var(--grey-500); }
.tag-chip i { font-size: 0.875rem; }

.alert {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border-radius: var(--r-sm);
  font-size: 0.9rem; margin-bottom: 10px; line-height: 1.5;
}
.alert i { font-size: 1.2rem; flex-shrink: 0; margin-top: 1px; }
.alert--success { background: #E6F4EA; color: #1A4726; }
.alert--success i { color: var(--success); }
.alert--warning { background: #FFF3E6; color: #6B3A00; }
.alert--warning i { color: var(--warning); }
.alert--error   { background: #FFF0F0; color: #7A1818; }
.alert--error i { color: var(--error); }
.alert--info    { background: var(--primary-50); color: #0d3d59; }
.alert--info i  { color: var(--primary-hover); }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field--full { grid-column: span 2; }
.form-label { font-size: 0.8125rem; font-weight: 600; color: var(--ink); }

.form-input-wrap { position: relative; }
.form-input-wrap--select .form-input { padding-right: 36px; appearance: none; }

.form-input {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: var(--r-sm);
  font-size: 0.9375rem; font-family: inherit; color: var(--ink);
  background: var(--white); outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}
.form-input:focus { border-color: var(--primary-500); box-shadow: 0 0 0 3px rgba(39,144,195,0.15); }
.form-input::placeholder { color: var(--grey-300); }
.form-input--sm { padding: 7px 12px; font-size: 0.875rem; }
.form-input--success { border-color: var(--success); }
.form-input--success:focus { box-shadow: 0 0 0 3px rgba(0,181,23,0.15); }
.form-input--error   { border-color: var(--error); }
.form-input--error:focus   { box-shadow: 0 0 0 3px rgba(250,52,52,0.15); }
.form-textarea { resize: vertical; min-height: 96px; }
.form-select { cursor: pointer; }

.form-input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--grey-300); font-size: 1rem; pointer-events: none; }
.form-input-icon-right { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--grey-300); font-size: 1rem; pointer-events: none; }
.form-icon--success { color: var(--success); }
.form-icon--error   { color: var(--error); }
.form-input-wrap .form-input { padding-left: 36px; }
.form-input-wrap:not(:has(.form-input-icon)) > .form-input { padding-left: 14px; }
.form-input-wrap > .form-input { padding-left: 36px; }
.form-input-group { display: flex; gap: 8px; }
.form-input-group .form-input { flex: 1; }
.form-hint { font-size: 0.75rem; }
.form-hint--success { color: var(--success); }
.form-hint--error   { color: var(--error); }

.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.breadcrumb__item { font-size: 0.8125rem; color: var(--subtle); }
.breadcrumb__item:hover { color: var(--ink); }
.breadcrumb__item--current { color: var(--ink); font-weight: 600; }
.breadcrumb__sep { font-size: 0.75rem; color: var(--grey-300); display: flex; align-items: center; }


/* ══════════════════════════════════════════════════════
   ORGANISMS
══════════════════════════════════════════════════════ */
.ds-fullwidth-demo { border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; }
.ds-fullwidth-demo--dark { background: var(--grey-900); }

.mc-header { background: var(--white); border-bottom: 1px solid var(--border); }
.mc-header--page { border-radius: var(--r) var(--r) 0 0; }
.mc-header__inner { max-width: 100%; display: flex; align-items: center; gap: 24px; padding: 0 24px; height: 56px; }
.mc-header__logo { font-size: 1.125rem; font-weight: 700; flex-shrink: 0; }
.mc-header__nav { display: flex; gap: 4px; flex: 1; }
.mc-header__nav-link { padding: 6px 12px; border-radius: var(--r-sm); font-size: 0.875rem; font-weight: 500; color: var(--subtle); display: flex; align-items: center; gap: 4px; transition: background var(--t), color var(--t); }
.mc-header__nav-link:hover, .mc-header__nav-link--active { color: var(--ink); background: var(--grey-50); }
.mc-header__search { flex: 1; max-width: 260px; }
.mc-header__actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.mc-footer { color: var(--white); }
.mc-footer__inner { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 32px; padding: 40px 32px; }
.mc-footer__logo { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.mc-footer__brand p { font-size: 0.875rem; color: rgba(255,255,255,0.5); line-height: 1.6; margin-bottom: 16px; }
.mc-footer__socials { display: flex; gap: 12px; }
.mc-footer__socials a { width: 36px; height: 36px; border-radius: var(--r-sm); background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 1rem; transition: background var(--t), color var(--t); }
.mc-footer__socials a:hover { background: rgba(255,255,255,0.15); color: var(--white); }
.mc-footer__col { display: flex; flex-direction: column; gap: 10px; }
.mc-footer__col-title { font-size: 0.8125rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.mc-footer__col a { font-size: 0.875rem; color: rgba(255,255,255,0.5); transition: color var(--t); }
.mc-footer__col a:hover { color: var(--white); }
.mc-footer__bottom { display: flex; justify-content: space-between; align-items: center; padding: 16px 32px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.8125rem; color: rgba(255,255,255,0.35); }
.mc-footer__legal { display: flex; gap: 20px; }
.mc-footer__legal a { color: rgba(255,255,255,0.35); transition: color var(--t); }
.mc-footer__legal a:hover { color: rgba(255,255,255,0.7); }
.mc-footer--compact .mc-footer__bottom--page { border-top: 1px solid var(--border); }

.product-cards-row { display: flex; gap: 16px; flex-wrap: wrap; }
.product-card { width: 220px; flex-shrink: 0; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; background: var(--white); transition: box-shadow var(--t), transform var(--t); }
.product-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.1); transform: translateY(-3px); }
.product-card__media { position: relative; background: var(--grey-50); aspect-ratio: 1/1; overflow: hidden; }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-card__media img { transform: scale(1.04); }
.product-card__badges { position: absolute; top: 10px; left: 10px; display: flex; flex-direction: column; gap: 4px; }
.product-card__wish { position: absolute; top: 8px; right: 8px; background: rgba(255,255,255,0.9) !important; }
.product-card__body { padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.product-card__brand { font-size: 0.7rem; font-weight: 600; color: var(--subtle); text-transform: uppercase; letter-spacing: 0.08em; }
.product-card__name  { font-size: 0.875rem; font-weight: 700; color: var(--ink); line-height: 1.35; }
.product-card__rating { display: flex; align-items: center; gap: 2px; font-size: 0.75rem; color: var(--warning); }
.product-card__rating-count { color: var(--subtle); margin-left: 4px; }
.product-card__pricing { display: flex; align-items: center; gap: 8px; }
.product-card__price { font-size: 1rem; font-weight: 700; color: var(--ink); }
.product-card__price-old { font-size: 0.8125rem; color: var(--grey-300); text-decoration: line-through; }

.product-card-list { display: flex; gap: 16px; align-items: flex-start; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; background: var(--white); padding: 16px; }
.product-card-list__media { position: relative; width: 140px; flex-shrink: 0; border-radius: var(--r-sm); overflow: hidden; background: var(--grey-50); }
.product-card-list__media img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.product-card-list__media .product-card__wish { top: 6px; right: 6px; }
.product-card-list__body { flex: 1; display: flex; flex-direction: column; gap: 10px; }
.product-card-list__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.product-card-list__price-block { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; white-space: nowrap; }
.product-card-list__bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.product-card-list__tags { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.product-card-list__actions { display: flex; gap: 8px; }

.plp { background: var(--white); }
.plp__filters-bar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.plp__filters-left  { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.plp__filters-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.plp__count { font-size: 0.8125rem; color: var(--subtle); }
.plp__view-btn { border: 1px solid var(--border) !important; }
.plp__view-btn--active { background: var(--grey-50) !important; }
.plp__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1px; background: var(--border); }
.plp__card { border: none; border-radius: 0; width: 100%; }
.plp__card:hover { transform: none; }
.plp__card .product-card__body { padding: 12px; }

.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.pdp__gallery { background: var(--grey-50); padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.pdp__gallery-main { border-radius: var(--r); overflow: hidden; }
.pdp__gallery-main img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.pdp__gallery-thumbs { display: flex; gap: 8px; }
.pdp__thumb { width: 64px; height: 64px; border-radius: var(--r-sm); overflow: hidden; border: 2px solid transparent; cursor: pointer; background: var(--white); }
.pdp__thumb img { width: 100%; height: 100%; object-fit: cover; }
.pdp__thumb--active { border-color: var(--grey-900); }
.pdp__info { padding: 28px; background: var(--white); display: flex; flex-direction: column; gap: 16px; }
.pdp__brand { font-size: 0.75rem; font-weight: 700; color: var(--subtle); text-transform: uppercase; letter-spacing: 0.1em; }
.pdp__title { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; }
.pdp__rating { display: flex; align-items: center; gap: 3px; font-size: 0.875rem; color: var(--warning); }
.pdp__rating span:first-of-type { font-weight: 700; color: var(--ink); }
.pdp__review-count { color: var(--subtle); font-size: 0.8125rem; }
.pdp__pricing { display: flex; align-items: center; gap: 10px; }
.pdp__price { font-size: 1.5rem; font-weight: 700; }
.pdp__price-old { font-size: 1rem; color: var(--grey-300); text-decoration: line-through; }
.pdp__options-label { font-size: 0.8125rem; font-weight: 600; color: var(--subtle); margin-bottom: 8px; }
.pdp__option-row { display: flex; gap: 8px; flex-wrap: wrap; }
.pdp__option-btn { padding: 7px 14px; border: 1.5px solid var(--border); border-radius: var(--r-sm); font-size: 0.875rem; font-weight: 500; background: var(--white); color: var(--ink); cursor: pointer; transition: border-color var(--t), background var(--t); font-family: inherit; }
.pdp__option-btn:hover { border-color: var(--grey-500); }
.pdp__option-btn--active { border-color: var(--grey-900); background: var(--grey-50); }
.pdp__color-btn { width: 28px; height: 28px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; transition: transform 0.2s; }
.pdp__color-btn:hover { transform: scale(1.1); }
.pdp__color-btn--active { outline: 2px solid var(--grey-900); outline-offset: 2px; }
.pdp__chips { display: flex; flex-wrap: wrap; gap: 8px; }
.pdp__actions { display: flex; gap: 8px; flex-wrap: wrap; }
.pdp__actions .btn--full { flex: 1; min-width: 140px; }

.checkout { background: var(--white); }
.checkout__steps { display: flex; align-items: center; padding: 20px 24px; border-bottom: 1px solid var(--border); gap: 0; }
.checkout__step { display: flex; align-items: center; gap: 8px; font-size: 0.8125rem; font-weight: 600; color: var(--grey-300); flex-shrink: 0; }
.checkout__step--active { color: var(--ink); }
.checkout__step--done   { color: var(--success); }
.checkout__step-num { width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; background: var(--grey-50); color: var(--grey-500); border: 1.5px solid var(--border); }
.checkout__step--active .checkout__step-num { background: var(--grey-900); color: var(--white); border-color: var(--grey-900); }
.checkout__step--done   .checkout__step-num { background: var(--success); color: var(--white); border-color: var(--success); }
.checkout__step-line { flex: 1; height: 1px; background: var(--border); margin: 0 8px; }
.checkout__body { display: grid; grid-template-columns: 1fr 380px; gap: 0; }
.checkout__form { padding: 24px; border-right: 1px solid var(--border); }
.checkout__form-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: 20px; }
.checkout__summary { padding: 24px; background: var(--grey-50); }
.checkout__item { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.checkout__item-img { width: 56px; height: 56px; object-fit: cover; border-radius: var(--r-sm); background: var(--white); }
.checkout__item-body { flex: 1; }
.checkout__item-name { font-size: 0.875rem; font-weight: 600; }
.checkout__item-variant { font-size: 0.8125rem; color: var(--subtle); }
.checkout__item-price { font-size: 0.9375rem; font-weight: 700; white-space: nowrap; }
.checkout__totals { display: flex; flex-direction: column; gap: 10px; }
.checkout__total-row { display: flex; justify-content: space-between; font-size: 0.875rem; color: var(--subtle); }
.checkout__total-row--grand { font-size: 1rem; font-weight: 700; color: var(--ink); padding-top: 10px; border-top: 1px solid var(--border); }
.checkout__free { color: var(--success); font-weight: 600; }
.checkout__discount { color: var(--error); font-weight: 600; }


/* ══════════════════════════════════════════════════════
   MARQUEE
══════════════════════════════════════════════════════ */
.marquee-track {
  overflow: hidden;
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 0;
  cursor: grab;
}
.marquee-track:active { cursor: grabbing; }

.marquee-inner {
  display: flex; gap: 16px;
  animation: marquee-ltr 32s linear infinite;
  width: max-content;
}
.marquee-inner--rtl { animation: marquee-rtl 38s linear infinite; }
.marquee-inner:hover,
.marquee-inner--rtl:hover { animation-play-state: paused; }

.marquee-item {
  flex-shrink: 0; width: 320px;
  border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--border);
  background: var(--grey-50);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transition: box-shadow 0.3s, transform 0.3s;
}
.marquee-item:hover { box-shadow: 0 8px 28px rgba(0,0,0,0.12); transform: translateY(-4px); }
.marquee-item img { width: 100%; height: 220px; object-fit: cover; }

.showcase-note {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--grey-500);
  line-height: 1.45;
}

@keyframes marquee-ltr {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes marquee-rtl {
  from { transform: translateX(-50%); }
  to   { transform: translateX(0); }
}


/* ══════════════════════════════════════════════════════
   UI PAGE BLOCKS
══════════════════════════════════════════════════════ */
.ui-page-block { margin-bottom: 48px; }
.ui-page-block__label { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--subtle); margin-bottom: 16px; }
.ui-page-frame { border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; box-shadow: 0 12px 48px rgba(0,0,0,0.08); }
.showcase-frame { border-color: #dfe3e8; box-shadow: 0 14px 44px rgba(0,0,0,0.09); }

.page-hero-banner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 40px 28px; background: linear-gradient(135deg, var(--primary-50) 0%, var(--white) 100%); }
.page-hero-banner__text { max-width: 400px; }
.page-hero-banner__text .badge { margin-bottom: 12px; }
.page-hero-banner__text h2 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 12px; }
.page-hero-banner__text p  { font-size: 0.9375rem; color: var(--subtle); margin-bottom: 20px; line-height: 1.6; }
.page-hero-banner__img { width: 200px; flex-shrink: 0; }
.page-hero-banner__img img { width: 100%; border-radius: var(--r); }

.brands-row { display: flex; align-items: center; gap: 16px; padding: 14px 28px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow-x: auto; background: var(--white); }
.brands-row__label { font-size: 0.75rem; font-weight: 600; color: var(--grey-300); white-space: nowrap; text-transform: uppercase; letter-spacing: 0.08em; }
.brands-row__items { display: flex; gap: 8px; }
.brand-chip { padding: 5px 14px; border: 1px solid var(--border); border-radius: 99px; font-size: 0.8125rem; font-weight: 500; white-space: nowrap; color: var(--subtle); transition: border-color var(--t); cursor: pointer; }
.brand-chip:hover { border-color: var(--grey-500); color: var(--ink); }

.page-section { padding: 24px 28px; }
.page-section__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.page-section__head h3 { font-size: 1.0625rem; font-weight: 700; }
.page-link { font-size: 0.875rem; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 4px; transition: gap var(--t); }
.page-link:hover { gap: 8px; }


/* ══════════════════════════════════════════════════════
   OUTRO
══════════════════════════════════════════════════════ */
.outro {
  padding: 160px 40px;
  background: var(--grey-900);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.outro::before {
  content: '';
  position: absolute;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 70vw;
  height: 60vh;
  background: radial-gradient(ellipse at center, rgba(39,144,195,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.outro__inner { max-width: 600px; margin: 0 auto; position: relative; }
.outro__label { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,0.25); margin-bottom: 20px; }
.outro__title { font-size: clamp(3.5rem, 8vw, 6rem); font-weight: 800; letter-spacing: -0.05em; line-height: 0.9; margin-bottom: 16px; }
.outro__sub { font-size: 1rem; color: rgba(255,255,255,0.3); margin-bottom: 48px; letter-spacing: 0.01em; }
.outro__back {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 99px; font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,0.7);
  transition: background var(--t), border-color var(--t), color var(--t);
}
.outro__back:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.3); color: var(--white); }
.outro__back i { transition: transform var(--t); }
.outro__back:hover i { transform: translateX(-3px); }


/* ══════════════════════════════════════════════════════
   SCROLL REVEAL
══════════════════════════════════════════════════════ */
.reveal,
.reveal-up,
.reveal-left {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-up   { transform: translateY(40px); }
.reveal-left { transform: translateX(-24px); }
.reveal.is-visible,
.reveal-up.is-visible,
.reveal-left.is-visible { opacity: 1; transform: none; }

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }


/* ══════════════════════════════════════════════════════
   MOBILE CHAPTER NAV
══════════════════════════════════════════════════════ */
.chapter-nav-mobile {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(28, 28, 28, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 10px 20px 14px;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.chapter-nav-mobile__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.chapter-nav-mobile__dots {
  display: flex;
  gap: 8px;
  align-items: center;
}
.chapter-nav-mobile__dot {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: rgba(255,255,255,0.2);
  border: none;
  cursor: pointer;
  transition: width 0.3s, background 0.3s;
  padding: 0;
}
.chapter-nav-mobile__dot.active {
  width: 24px;
  background: #fff;
}

@media (max-width: 1024px) {
  .chapter-nav-mobile { display: flex; }
  main { padding-bottom: 80px; }
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
  .progress-nav { right: 16px; }
}

@media (max-width: 1024px) {
  .progress-nav { display: none; }
  .mc-footer__inner { grid-template-columns: 1fr 1fr; }
  .checkout__body { grid-template-columns: 1fr; }
  .checkout__form { border-right: none; border-bottom: 1px solid var(--border); }
  .pdp { grid-template-columns: 1fr; }
  .chapter__inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 900px) {
  .exec-summary__grid { grid-template-columns: 1fr; }
  .process-framework { grid-template-columns: 1fr; }
  .section-kpi { grid-template-columns: 1fr; }
  .edge-states__grid { grid-template-columns: 1fr; }
  .test-protocol__grid { grid-template-columns: 1fr; }
  .traceability__head,
  .traceability__row { grid-template-columns: 1fr; gap: 6px; }
  .ds-state-matrix__head,
  .ds-state-matrix__row { grid-template-columns: 1fr; gap: 6px; }
  .marquee-item { width: 280px; }
  .showcase-note { font-size: 0.8rem; }
  .ui-page-frame { border-radius: 14px; }
  .page-hero-banner,
  .page-section,
  .brands-row { padding-left: 18px; padding-right: 18px; }
  .mc-plp-no-results__actions { flex-direction: column; }
  .mc-plp-no-results__actions .mc-btn { width: 100%; }
  .section__inner { grid-template-columns: 1fr; gap: 0; }
  .section__label { writing-mode: horizontal-tb; transform: none; margin-bottom: 6px; }
  .two-col { grid-template-columns: 1fr; }
  .personas-grid { grid-template-columns: repeat(2, 1fr); }
  .icon-list { grid-template-columns: 1fr; }
  .stats-row { flex-direction: column; }
  .stat { border-right: none; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }
  .type-scale__row { grid-template-columns: 1fr; gap: 8px; padding: 14px 0; }
  .page-hero-banner { flex-direction: column; text-align: center; }
  .page-hero-banner__img { width: 140px; }
  .chapter { padding: 80px 32px; min-height: auto; }
}

@media (max-width: 640px) {
  .exec-summary { padding: 56px 20px; }
  .marquee-item { width: 230px; }
  .site-header { padding: 0 20px; }
  .hero { padding: 80px 20px 40px; }
  .section { padding: 64px 20px; }
  .chapter { padding: 64px 20px; }
  .personas-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field--full { grid-column: span 1; }
  .color-row { gap: 8px; }
  .color-swatch { width: 80px; height: 64px; }
  .outro { padding: 100px 20px; }
  .mc-footer__inner { grid-template-columns: 1fr; }
  .mc-header__nav { display: none; }
  .mc-header__search { display: none; }
}