/* ============================================
   AIPIVT.COM — Apple-Inspired Design System
   SF Pro Display/Text, Black/Gray/Blue palette
   Single accent: Apple Blue #0071e3
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-black:        #000000;
  --color-light-gray:   #f5f5f7;
  --color-near-black:   #1d1d1f;
  --color-white:        #ffffff;

  --color-blue:         #0071e3;
  --color-link-light:   #0066cc;
  --color-link-dark:    #2997ff;

  --color-text-light:   rgba(0, 0, 0, 0.8);
  --color-text-muted:   rgba(0, 0, 0, 0.48);

  --color-surface-dark-1: #272729;

  /* Typography */
  --font-display: 'SF Pro Display', 'SF Pro Icons', ui-rounded, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-text:    'SF Pro Text', 'SF Pro Icons', ui-sans-serif, 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Spacing (8px base) */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   40px;
  --space-2xl:  64px;
  --space-3xl:  96px;

  /* Layout */
  --max-width:  980px;

  /* Radius */
  --radius-sm:    5px;
  --radius-base:  8px;
  --radius-md:   11px;
  --radius-lg:   12px;
  --radius-pill: 980px;

  /* Shadow */
  --shadow-card: 3px 5px 30px rgba(0, 0, 0, 0.22);

  /* Transition */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-text);
  color: var(--color-near-black);
  background-color: var(--color-white);
  line-height: 1.47;
  letter-spacing: -0.374px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-link-light);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-near-black);
  line-height: 1.1;
}

h1 {
  font-size: 3.5rem;
  line-height: 1.07;
  letter-spacing: -0.28px;
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: 2.5rem;
  line-height: 1.1;
  letter-spacing: -0.2px;
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: 1.75rem;
  line-height: 1.14;
  letter-spacing: 0.196px;
  font-weight: 400;
  margin-bottom: var(--space-md);
}

h4 {
  font-size: 1.31rem;
  line-height: 1.19;
  letter-spacing: 0.231px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

.text-center {
  text-align: center;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background: var(--color-black);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark p {
  color: var(--color-white);
}

.section--dark a {
  color: var(--color-link-dark);
}

.section--light {
  background: var(--color-light-gray);
  color: var(--color-near-black);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section__subtitle {
  font-size: 1.06rem;
  color: var(--color-text-light);
  line-height: 1.47;
}

.section--dark .section__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* --- Header (Translucent Glass Nav) --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  height: 48px;
  display: flex;
  align-items: center;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.header__logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: -0.3px;
  white-space: nowrap;
}

.header__logo:hover {
  color: var(--color-white);
  text-decoration: none;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header__nav-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.header__nav-link {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.75rem;
  font-weight: 400;
  padding: 0 var(--space-sm);
  transition: color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.header__nav-link:hover {
  color: var(--color-white);
  text-decoration: none;
}

.header__nav-link--active {
  color: var(--color-white);
}

/* Services Dropdown */
.services-dropdown {
  position: relative;
}

.services-dropdown__trigger {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.75rem;
  font-weight: 400;
  padding: 0 var(--space-sm);
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-text);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.services-dropdown__trigger:hover {
  color: var(--color-white);
}

.services-dropdown__trigger::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-left: 4px;
  vertical-align: middle;
  position: relative;
  top: -1px;
  transition: transform var(--transition-fast);
}

.services-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  min-width: 320px;
  z-index: 1001;
}

.services-dropdown__menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

.services-dropdown:hover .services-dropdown__menu,
.services-dropdown--open .services-dropdown__menu {
  display: block;
}

.services-dropdown:hover .services-dropdown__trigger::after,
.services-dropdown--open .services-dropdown__trigger::after {
  transform: rotate(-135deg);
}

.services-dropdown__item {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-base);
  color: var(--color-near-black);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.services-dropdown__item:hover {
  background: var(--color-light-gray);
  text-decoration: none;
}

.services-dropdown__item-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-near-black);
  margin-bottom: 2px;
}

.services-dropdown__item-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Header CTA */
.header__cta {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--color-blue);
  color: var(--color-white);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 400;
  text-decoration: none;
  transition: background var(--transition-fast);
  white-space: nowrap;
}

.header__cta:hover {
  background: #0077ed;
  color: var(--color-white);
  text-decoration: none;
}

/* Mobile Menu Toggle */
.header__menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.header__menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--color-white);
  margin: 4px 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

@media (max-width: 834px) {
  .header__menu-toggle {
    display: block;
  }

  .header__nav-links {
    display: none;
    position: absolute;
    top: 48px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    padding: var(--space-lg);
    gap: var(--space-md);
  }

  .header__nav-links--open {
    display: flex;
  }

  .header__nav-link {
    font-size: 0.875rem;
    padding: var(--space-sm) 0;
  }

  .header__cta {
    align-self: flex-start;
  }

  /* Mobile: dropdown becomes accordion */
  .services-dropdown__menu {
    position: static;
    transform: none;
    background: transparent;
    box-shadow: none;
    padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
    min-width: auto;
  }

  .services-dropdown__item {
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-sm) var(--space-md);
  }

  .services-dropdown__item:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .services-dropdown__item-title {
    color: var(--color-white);
  }

  .services-dropdown__item-desc {
    color: rgba(255, 255, 255, 0.5);
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 15px;
  border-radius: var(--radius-base);
  font-family: var(--font-text);
  font-weight: 400;
  font-size: 1.06rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.47;
}

.btn--primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border-color: transparent;
}

.btn--primary:hover {
  background-color: #0077ed;
  color: var(--color-white);
  text-decoration: none;
}

.btn--outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline-white:hover {
  border-color: var(--color-white);
  color: var(--color-white);
  text-decoration: none;
}

.btn--ghost-light {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn--ghost-light:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
}

.btn--ghost-dark {
  background-color: transparent;
  color: var(--color-near-black);
  border-color: rgba(29, 29, 31, 0.18);
}

.btn--ghost-dark:hover {
  background-color: rgba(29, 29, 31, 0.06);
  color: var(--color-near-black);
  border-color: rgba(29, 29, 31, 0.35);
  text-decoration: none;
}

.btn--lg {
  padding: 12px 24px;
  font-size: 1.13rem;
  font-weight: 300;
}

/* Pill Link (Apple signature CTA) */
.pill-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  border: 1px solid var(--color-link-light);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-link-light);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pill-link:hover {
  background: var(--color-link-light);
  color: var(--color-white);
  text-decoration: none;
}

.pill-link--dark {
  border-color: var(--color-link-dark);
  color: var(--color-link-dark);
}

.pill-link--dark:hover {
  background: var(--color-link-dark);
  color: var(--color-black);
}

.pill-link::after {
  content: '\203A';
  font-size: 1.1em;
}

/* --- Hero --- */
.hero {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  min-height: 520px;
  display: flex;
  align-items: center;
  text-align: center;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__content {
  max-width: 750px;
}

.hero h1 {
  color: var(--color-white);
  font-size: 3.5rem;
  line-height: 1.07;
  letter-spacing: -0.28px;
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: 1.31rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
  line-height: 1.19;
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.231px;
}

.hero__metrics {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.hero__metric {
  text-align: center;
}

.hero__metric-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.1;
}

.hero__metric-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-xs);
  letter-spacing: -0.224px;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Service Hub Hero */
.service-hub-hero {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.service-hub-hero h1 {
  color: var(--color-white);
  font-size: 3.5rem;
  line-height: 1.07;
  letter-spacing: -0.28px;
  margin-bottom: var(--space-md);
}

.service-hub-hero__subtitle {
  font-size: 1.31rem;
  font-family: var(--font-display);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.19;
  margin-bottom: var(--space-xl);
}

.hero__eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.68);
  margin-bottom: var(--space-md);
}

.hero__title {
  margin-bottom: var(--space-md);
}

.hero__metric-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-white);
}

.section__title {
  text-align: center;
  margin-bottom: var(--space-md);
}

.section__lede {
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
  text-align: center;
  font-size: 1.06rem;
  color: var(--color-text-light);
}

.section--dark .section__lede {
  color: rgba(255, 255, 255, 0.8);
}

/* --- Service Nav (Sticky sub-nav on hubs) --- */
.service-nav {
  position: sticky;
  top: 48px;
  z-index: 900;
  background: var(--color-white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.service-nav__inner,
.service-nav__list {
  display: flex;
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.service-nav__list {
  width: 100%;
}

.service-nav__link {
  display: block;
  padding: var(--space-md) 0;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.service-nav__link:hover,
.service-nav__link--active {
  color: var(--color-near-black);
  border-bottom-color: var(--color-near-black);
  text-decoration: none;
}

/* --- Cards --- */
.card {
  background: var(--color-light-gray);
  border-radius: var(--radius-base);
  padding: var(--space-xl);
  transition: transform var(--transition-base);
}

.card__img {
  margin-bottom: var(--space-md);
}

.card__badge {
  display: inline-block;
  background-color: rgba(0, 113, 227, 0.1);
  color: var(--color-blue);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-sm);
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.31rem;
  font-weight: 700;
  line-height: 1.19;
  letter-spacing: 0.231px;
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--color-text-light);
  font-size: 0.875rem;
  line-height: 1.47;
  letter-spacing: -0.224px;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-md);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-link-light);
  text-decoration: none;
}

.card__link:hover {
  text-decoration: underline;
}

.card__link::after {
  content: '\203A';
  font-size: 1.2em;
}

/* Dark section cards */
.section--dark .card {
  background: var(--color-surface-dark-1);
}

.section--dark .card__title {
  color: var(--color-white);
}

.section--dark .card__text {
  color: rgba(255, 255, 255, 0.7);
}

.section--dark .card__link {
  color: var(--color-link-dark);
}

/* --- Pillar Grid --- */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.pillar-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
}

.section--dark .pillar-card {
  background: var(--color-surface-dark-1);
  box-shadow: none;
}

.pillar-card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  margin-bottom: var(--space-md);
  border-radius: 50%;
  background: rgba(0, 113, 227, 0.1);
  color: var(--color-blue);
  font-size: 0.875rem;
  font-weight: 600;
}

.pillar-card__title {
  font-size: 1.31rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pillar-card__body {
  margin-bottom: 0;
  font-size: 0.875rem;
  line-height: 1.57;
}

.section--dark .pillar-card__title,
.section--dark .pillar-card__body {
  color: var(--color-white);
}

.pillar-grid__item {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.pillar-grid__icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.pillar-grid__title {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pillar-grid__text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.47;
}

@media (max-width: 834px) {
  .pillar-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .pillar-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Feature Table --- */
.feature-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
}

.feature-table-wrap {
  overflow-x: auto;
}

.feature-table th,
.feature-table td {
  text-align: left;
  padding: var(--space-md) var(--space-lg);
  font-size: 0.875rem;
  vertical-align: top;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.feature-table th {
  font-weight: 600;
  color: var(--color-near-black);
  width: 40%;
}

.feature-table td {
  color: var(--color-text-light);
}

.section--dark .feature-table th {
  color: var(--color-white);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.section--dark .feature-table td {
  color: rgba(255, 255, 255, 0.7);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.feature-table__footnote {
  margin-top: var(--space-md);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.section--dark .feature-table__footnote {
  color: rgba(255, 255, 255, 0.55);
}

/* --- Use Case Cards --- */
.use-case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.use-case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
}

.section--dark .use-case-card {
  background: var(--color-surface-dark-1);
  box-shadow: none;
}

.use-case-card__tag,
.use-case-card__who {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.use-case-card__title {
  font-family: var(--font-display);
  font-size: 1.31rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.section--dark .use-case-card__title {
  color: var(--color-white);
}

.use-case-card__row {
  margin-bottom: var(--space-md);
}

.use-case-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-xs);
}

.use-case-card__value {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.47;
}

.use-case-card__detail {
  display: grid;
  grid-template-columns: minmax(72px, auto) 1fr;
  gap: var(--space-xs) var(--space-md);
  margin-bottom: var(--space-lg);
}

.use-case-card__detail dt {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.use-case-card__detail dd {
  font-size: 0.875rem;
  line-height: 1.57;
  color: var(--color-text-light);
  margin: 0;
}

.section--dark .use-case-card__detail dt {
  color: rgba(255, 255, 255, 0.55);
}

.section--dark .use-case-card__detail dd {
  color: rgba(255, 255, 255, 0.8);
}

/* --- CTA Band --- */
.cta-band {
  background: var(--color-black);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-2xl) 0;
}

.cta-band h2 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-band p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

.cta-band.section--light {
  background: var(--color-light-gray);
  color: var(--color-near-black);
}

.cta-band.section--light h2 {
  color: var(--color-near-black);
}

.cta-band.section--light p {
  color: var(--color-text-light);
}

.cta-band__subtitle {
  max-width: 700px;
}

.cta-band__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* --- FAQ --- */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-lg) 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  cursor: pointer;
  list-style: none;
  color: var(--color-near-black);
  background: transparent;
  border: 0;
  text-align: left;
}

.faq-item__question::-webkit-details-marker {
  display: none;
}

.faq-item__question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item[open] .faq-item__question::after {
  content: '\2212';
}

.faq-item--open .faq-item__question::after {
  content: '\2212';
}

.faq-item__answer {
  display: none;
  padding: 0 0 var(--space-lg);
  color: var(--color-text-light);
  font-size: 0.875rem;
  line-height: 1.57;
}

.faq-item__answer p:last-child {
  margin-bottom: 0;
}

.faq-item--open .faq-item__answer,
.faq-item[open] .faq-item__answer {
  display: block;
}

.section--dark .faq-item {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.section--dark .faq-item__question {
  color: var(--color-white);
}

.section--dark .faq-item__answer {
  color: rgba(255, 255, 255, 0.7);
}

/* --- Contact Form --- */
.form {
  max-width: 640px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
  color: var(--color-near-black);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(0, 0, 0, 0.16);
  border-radius: var(--radius-base);
  font-family: var(--font-text);
  font-size: 1rem;
  color: var(--color-near-black);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.form__textarea {
  min-height: 140px;
  resize: vertical;
}

.form__input--error {
  border-color: #d32f2f;
}

.form__error {
  color: #d32f2f;
  font-size: 0.75rem;
  margin-top: 4px;
  display: none;
}

.form__note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.form__success {
  display: none;
  text-align: center;
  padding: var(--space-xl);
}

.form__success h3 {
  color: var(--color-blue);
  margin-bottom: var(--space-sm);
}

/* --- Page Hero (subpages) --- */
.page-hero {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-hero h1 {
  color: var(--color-white);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Testimonials --- */
.testimonial {
  background: var(--color-light-gray);
  border-radius: var(--radius-base);
  padding: var(--space-xl);
}

.testimonial__quote {
  font-style: italic;
  color: var(--color-near-black);
  margin-bottom: var(--space-md);
  line-height: 1.7;
  position: relative;
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-blue);
}

.testimonial__author {
  font-weight: 600;
  color: var(--color-near-black);
}

.testimonial__company {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.testimonial__result {
  display: inline-block;
  background: rgba(0, 113, 227, 0.1);
  color: var(--color-blue);
  font-weight: 600;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-top: var(--space-sm);
}

/* --- Customer Grid --- */
.customer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.proof-grid,
.related-grid,
.compliance-grid {
  display: grid;
  gap: var(--space-lg);
}

.proof-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.proof-stat {
  text-align: center;
}

.proof-stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.1;
}

.proof-stat__label {
  display: block;
  margin-top: var(--space-xs);
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.875rem;
}

.related-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.related-card,
.compliance-card {
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.related-card {
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.section--dark .related-card {
  background: var(--color-surface-dark-1);
  box-shadow: none;
}

.related-card__tag {
  display: inline-block;
  margin-bottom: var(--space-sm);
  color: var(--color-blue);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.related-card__title {
  margin-bottom: var(--space-sm);
}

.related-card__body {
  font-size: 0.875rem;
  line-height: 1.57;
}

.section--dark .related-card__title,
.section--dark .related-card__body {
  color: var(--color-white);
}

.compliance-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compliance-card {
  background: var(--color-white);
  box-shadow: var(--shadow-card);
}

.compliance-card__name {
  font-size: 1.31rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.compliance-card__desc,
.compliance-note {
  font-size: 0.875rem;
  line-height: 1.57;
}

.customer-card {
  background: var(--color-light-gray);
  border-radius: var(--radius-base);
  padding: var(--space-xl);
}

.customer-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-sm);
}

.customer-card__name {
  font-family: var(--font-display);
  font-size: 1.31rem;
  font-weight: 700;
}

.customer-card__industry {
  display: inline-block;
  background: rgba(0, 113, 227, 0.1);
  color: var(--color-blue);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.customer-card__result {
  font-weight: 600;
  color: var(--color-blue);
  margin-bottom: var(--space-sm);
}

.customer-card__quote {
  font-style: italic;
  color: var(--color-text-light);
  font-size: 0.875rem;
  line-height: 1.6;
  border-left: 3px solid var(--color-blue);
  padding-left: var(--space-md);
}

/* --- Filter Bar --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.pill {
  padding: 6px 16px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 400;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--color-white);
  color: var(--color-text-light);
}

.pill:hover,
.pill--active {
  background-color: var(--color-near-black);
  color: var(--color-white);
  border-color: var(--color-near-black);
}

/* --- Insights Cards --- */
.insight-card {
  background: var(--color-light-gray);
  border-radius: var(--radius-base);
  overflow: hidden;
}

.insight-card__image {
  height: 200px;
  background-color: var(--color-surface-dark-1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
}

.insight-card__body {
  padding: var(--space-lg);
}

.insight-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-blue);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.insight-card__meta {
  margin: calc(var(--space-sm) * -0.5) 0 var(--space-sm);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.insight-card__meta a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.insight-card__title {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.insight-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* --- Footer --- */
.footer {
  background: var(--color-light-gray);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  font-size: 0.875rem;
}

.footer__brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  max-width: 280px;
}

.footer__heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  color: var(--color-near-black);
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__links a:hover {
  color: var(--color-link-light);
}

.footer__bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer__legal {
  display: flex;
  gap: var(--space-md);
}

.footer__legal a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__legal a:hover {
  color: var(--color-link-light);
}

@media (max-width: 834px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 640px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

/* --- Industry Section --- */
.industry-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.industry-section:last-child {
  border-bottom: none;
}

.industry-section__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.industry-section__col h4 {
  color: var(--color-blue);
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.industry-section__col ul {
  list-style: disc;
  padding-left: var(--space-md);
}

.industry-section__col li {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

@media (max-width: 640px) {
  .industry-section__grid {
    grid-template-columns: 1fr;
  }
}

/* --- Comparison Tables --- */
.comparison-table-wrap {
  overflow-x: auto;
  margin: var(--space-xl) 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comparison-table caption {
  text-align: left;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  padding: var(--space-md) 0 var(--space-sm);
  color: var(--color-near-black);
}

.comparison-table th {
  background-color: var(--color-near-black);
  color: var(--color-white);
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.comparison-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  color: var(--color-text-light);
  vertical-align: top;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) td {
  background-color: var(--color-light-gray);
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--color-near-black);
}

.comparison-table .highlight {
  color: var(--color-blue);
  font-weight: 600;
}

/* --- Team Grid (about page) --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.team-card {
  background: var(--color-light-gray);
  border-radius: var(--radius-base);
  padding: var(--space-xl);
  text-align: center;
}

.team-card__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(0, 113, 227, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 2rem;
  color: var(--color-blue);
  font-weight: 600;
  overflow: hidden;
}

.team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card__name {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.team-card__title {
  font-size: 0.875rem;
  color: var(--color-blue);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.team-card__bio {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.57;
  margin-bottom: var(--space-md);
}

.team-card__linkedin {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-link-light);
}

.section--dark .team-card__name {
  color: var(--color-near-black);
}

.section--dark .team-card__bio {
  color: var(--color-text-light);
}

/* --- Article Pages --- */
.article-hero {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
}

.article-hero h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  max-width: 800px;
}

.article-hero p {
  color: rgba(255, 255, 255, 0.8);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  margin-top: var(--space-md);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

.article-meta__tag {
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  color: var(--color-white);
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.article-body h2 {
  font-size: 1.75rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article-body h3 {
  font-size: 1.31rem;
  font-weight: 600;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article-body p {
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.article-body ul, .article-body ol {
  list-style: disc;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: var(--space-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

.article-body blockquote {
  border-left: 4px solid var(--color-blue);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
  background: var(--color-light-gray);
  border-radius: 0 var(--radius-base) var(--radius-base) 0;
}

.article-body blockquote p {
  font-style: italic;
  color: var(--color-near-black);
  margin-bottom: 0;
}

.article-callout {
  background: rgba(0, 113, 227, 0.05);
  border: 1px solid rgba(0, 113, 227, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
}

.article-callout p {
  margin-bottom: 0;
  color: var(--color-near-black);
}

.article-callout strong {
  color: var(--color-blue);
}

.citation {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  margin-top: var(--space-2xl);
  padding-top: var(--space-md);
}

.citation p {
  font-size: 0.75rem;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  max-width: 760px;
  margin: 0 auto;
}

/* --- Trust Strip --- */
.trust-strip {
  text-align: center;
  padding: var(--space-xl) 0;
}

.trust-strip__value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-near-black);
  margin-bottom: var(--space-sm);
}

.trust-strip__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- Proof Moment (full-viewport immersive) --- */
.proof-moment {
  text-align: center;
  padding: var(--space-3xl) 0;
}

.proof-moment__eyebrow {
  font-family: var(--font-text);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.224px;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.proof-moment__value {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 600;
  line-height: 1.07;
  letter-spacing: -0.28px;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.proof-moment__label {
  font-family: var(--font-display);
  font-size: 1.31rem;
  font-weight: 400;
  line-height: 1.19;
  letter-spacing: 0.231px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
}

.proof-moment__actions {
  display: flex;
  justify-content: center;
}

/* --- Page Meta --- */
.page-meta {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Utilities --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* --- Responsive Typography --- */
@media (max-width: 834px) {
  h1 {
    font-size: 2.5rem;
  }

  .hero h1,
  .service-hub-hero h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 2rem;
  }

  .hero h1,
  .service-hub-hero h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero {
    min-height: 400px;
    padding: var(--space-2xl) 0;
  }

  .hero__metrics,
  .service-hub-hero__metrics {
    flex-direction: column;
    gap: var(--space-md);
  }

  .article-body {
    padding: var(--space-xl) var(--space-md);
  }

  .article-hero h1 {
    font-size: 1.75rem;
  }

  .article-nav {
    flex-direction: column;
  }

  .use-case-grid,
  .related-grid,
  .compliance-grid,
  .proof-grid {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --- Email Obfuscation --- */
.email span { display: none; }