/* style.css - AIWebsiteSystems.com
   Design tokens injected as CSS vars via site_tokens_css().
   Theme: deep navy header/hero/footer, white body, blue + cyan accents.
   Modeled on AIMedicineNow.com's visual system (portfolio CSS guide). */

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

html {
    scroll-behavior: smooth;
}

html, body {
    overflow-x: hidden;
}

body {
    margin: 0;
    padding-top: var(--header-height, 64px);
    background: var(--color-bg, #fff);
    color: var(--color-text, #1a1a1a);
    font-family: var(--font-body, system-ui, sans-serif);
    font-size: 1rem;
    line-height: 1.65;
}

body.is-nav-open {
    overflow: hidden;
}

a {
    color: var(--color-accent, #2563eb);
    text-decoration: underline;
}

a:hover {
    color: var(--color-accent-strong, #1d4ed8);
}

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

h1, h2, h3, h4, h5, h6 {
    overflow-wrap: anywhere;
}

/* ── Header ────────────────────────────────────────────────────────────────── */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height, 64px);
    background: var(--color-surface-dark, #0a1628);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    z-index: 100;
}

.site-header__inner {
    max-width: var(--content-width, 1200px);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* ── Logo ────────────────────────────────────────────────────────────────── */

.site-brand {
    display: inline-flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
}

.site-logo {
    display: inline-flex;
    min-width: 0;
    text-decoration: none;
    color: var(--color-text-inverse, #e8eef5);
}

.site-logo__wordmark {
    display: inline-flex;
    align-items: baseline;
    flex-wrap: nowrap;
    white-space: nowrap;
    gap: 0.28em;
    font-family: var(--font-display, system-ui, sans-serif);
    font-weight: 300;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.site-logo__prefix,
.site-logo__accent,
.site-logo__suffix {
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: inherit;
    line-height: inherit;
    white-space: nowrap;
}

.site-logo__accent {
    color: var(--color-highlight, #FF9900);
}

.site-logo__tagline {
    display: inline-block;
    font-size: 0.76rem;
    font-style: italic;
    color: rgba(232,238,245,0.85);
    line-height: 1.3;
}

/* ── Navigation ────────────────────────────────────────────────────────────── */

.site-nav {
    margin-left: auto;
}

.site-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.site-nav__list a {
    color: rgba(232,238,245,0.85);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    transition: color 0.15s;
}

.site-nav__list a:hover,
.site-nav__list a.is-active {
    color: var(--color-accent-cyan-light, #4db6ac);
}

.site-nav__item--has-dropdown {
    position: relative;
}

.nav-chevron::after {
    content: ' \25BE';
    font-size: 0.7em;
}

.nav-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background: var(--color-surface-dark, #0a1628);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-small, 6px);
    padding: 0.5rem 0;
    min-width: 210px;
    list-style: none;
    margin: 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(4px);
    transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
}

/* Click/focus-driven, not hover -- a hover gap between the link and the panel
   was closing the menu before a pointer could reach it. See assets/js/nav.js. */
.site-nav__item--has-dropdown.is-open > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.nav-dropdown li a {
    display: block;
    padding: 0.5rem 1.1rem;
    white-space: nowrap;
    font-size: 0.875rem;
    color: rgba(232,238,245,0.8);
}

.nav-dropdown li a:hover {
    color: var(--color-accent-cyan-light, #4db6ac);
}

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.35rem 0.4rem;
    margin-left: auto;
}

.nav-hamburger__label {
    display: block;
    margin-top: 2px;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    line-height: 1;
    color: rgba(232,238,245,0.65);
}

.nav-hamburger span:not(.nav-hamburger__label) {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-inverse, #e8eef5);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Layout ─────────────────────────────────────────────────────────────────── */

.page-wrapper {
    max-width: var(--content-width, 1200px);
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

.content-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2.5rem;
    align-items: start;
    min-width: 0;
}

.content-layout--single {
    grid-template-columns: 1fr;
    max-width: 780px;
}

.content-main {
    min-width: 0;
}

.content-sidebar {
    position: sticky;
    top: calc(var(--header-height, 64px) + 1.5rem);
}

/* ── Breadcrumbs ─────────────────────────────────────────────────────────────── */

.breadcrumbs {
    margin-bottom: 1.5rem;
}

.breadcrumbs__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.82rem;
    color: var(--color-text-muted, #6b7280);
}

.breadcrumbs__item + .breadcrumbs__item::before {
    content: '/';
    margin-right: 0.5rem;
}

.breadcrumbs__item.is-current {
    color: var(--color-text, #1a1a1a);
}

.breadcrumbs__item a {
    color: var(--color-accent, #2563eb);
    text-decoration: none;
}

/* ── Sidebar blocks ───────────────────────────────────────────────────────── */

.sidebar-block {
    background: var(--color-surface, #f8f9fa);
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-medium, 10px);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
}

.sidebar-block__title {
    font-weight: 600;
    margin-bottom: 0.6rem;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted, #6b7280);
}

.sidebar-block__body {
    font-size: 0.9rem;
    color: var(--color-text-muted, #6b7280);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.sidebar-block__links {
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-block__links a {
    font-size: 0.875rem;
    color: var(--color-accent, #2563eb);
}

.cta-btn {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--color-accent, #2563eb);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-small, 6px);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ── Footer ─────────────────────────────────────────────────────────────────── */

.site-footer {
    background: var(--color-surface-dark, #0a1628);
    padding: 3.5rem 0 0;
    margin-top: 4rem;
}

.site-footer__inner {
    max-width: var(--content-width, 1200px);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.site-footer__brand-name {
    font-family: var(--font-display, system-ui, sans-serif);
    font-weight: 300;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    color: var(--color-text-inverse, #e8eef5);
    margin-bottom: 0.5rem;
}

.site-footer__tagline {
    margin: 0 0 0.5rem;
    color: rgba(232,238,245,0.85);
    font-style: italic;
    font-size: 0.85rem;
    line-height: 1.5;
}

.site-footer__contact a {
    color: rgba(232,238,245,0.55);
    font-size: 0.85rem;
    text-decoration: none;
}

.site-footer__contact a:hover {
    color: var(--color-accent-cyan-light, #4db6ac);
}

.site-footer__col-heading {
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(232,238,245,0.4);
    margin-bottom: 0.85rem;
}

.site-footer__links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.site-footer__links a {
    color: rgba(232,238,245,0.7);
    text-decoration: none;
    font-size: 0.875rem;
}

.site-footer__links a:hover {
    color: var(--color-accent-cyan-light, #4db6ac);
}

.site-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 1.25rem 0;
    font-size: 0.8rem;
    color: rgba(232,238,245,0.4);
}

/* ── Utility ─────────────────────────────────────────────────────────────────── */

.text-muted {
    color: var(--color-text-muted, #6b7280);
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-small, 6px);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn--primary {
    background: var(--color-accent, #2563eb);
    color: #fff;
    border-color: var(--color-accent, #2563eb);
}

.btn--primary:hover {
    background: var(--color-accent-strong, #1d4ed8);
    border-color: var(--color-accent-strong, #1d4ed8);
    color: #fff;
}

.btn--outline {
    border: 1px solid var(--color-accent, #2563eb);
    color: var(--color-accent, #2563eb);
    background: transparent;
}

.btn--outline:hover {
    background: var(--color-accent, #2563eb);
    color: #fff;
}

.btn--outline-light {
    border-color: rgba(232,238,245,0.5);
    color: var(--color-text-inverse, #e8eef5);
    background: transparent;
}

.btn--outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(232,238,245,0.85);
    color: #fff;
}

/* An outline button placed on the dark hero needs the light treatment
   automatically -- content JSON writes plain "btn btn--outline" without
   knowing which section it renders in. */
.hero .btn--outline {
    border-color: rgba(232,238,245,0.5);
    color: var(--color-text-inverse, #e8eef5);
    background: transparent;
}

.hero .btn--outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(232,238,245,0.85);
    color: #fff;
}

/* ── Error page ─────────────────────────────────────────────────────────────── */

.error-page {
    text-align: center;
    padding: 5rem 1rem;
}

.error-page h1 {
    font-family: var(--font-display, system-ui, sans-serif);
    font-size: 6rem;
    font-weight: 100;
    margin: 0 0 0.25rem;
    color: var(--color-border, #e5e7eb);
    line-height: 1;
}

.error-page p {
    font-size: 1.1rem;
    color: var(--color-text-muted, #6b7280);
    margin-bottom: 2rem;
}

/* =============================================================
   Marketing components ... AI Website Systems
   Everything below uses the design tokens above so a theme
   change stays a token change.
   ============================================================= */

/* Section rhythm */
.section{padding:4rem 0}
.section--alt{background:var(--color-surface)}
.section--tight{padding:2.5rem 0}
.section__inner{max-width:var(--content-width);margin-inline:auto;padding-inline:1.5rem;min-width:0}
.section__inner--narrow{max-width:760px}
.section-eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--color-accent-cyan);font-weight:700;margin:0 0 .75rem}
.section-eyebrow::before{content:"";width:1.9rem;height:1px;background:currentColor}
.section-head{margin-bottom:2rem}
.section-head h2{font-family:var(--font-display);font-weight:300;font-size:clamp(1.6rem,3.4vw,2.3rem);letter-spacing:-.02em;line-height:1.2;margin-bottom:.6rem}
.section-head p{color:var(--color-text-muted);max-width:68ch}

/* Hero ... dark navy band, matches the site header/footer treatment */
.hero{
  position:relative;
  padding:4.5rem 0 4rem;
  background:var(--color-surface-dark);
  overflow:hidden;
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 78% 30%, rgba(77,182,172,0.14) 0%, transparent 50%),
    radial-gradient(circle at 15% 85%, rgba(37,99,235,0.16) 0%, transparent 45%);
  pointer-events:none;
}
.hero .section__inner{position:relative;z-index:1}
.hero .section-eyebrow{
  margin:0 0 1.4rem;
  color:var(--color-accent-cyan-light);
}
.hero h2{
  font-family:var(--font-display);
  font-weight:250;
  font-size:clamp(2.1rem,5.2vw,3.5rem);
  letter-spacing:-.02em;
  line-height:1.15;
  color:#fff;
  margin-bottom:1.1rem;
  max-width:22ch;
}
.hero__lead{font-size:clamp(1.02rem,1.9vw,1.2rem);line-height:1.65;color:rgba(232,238,245,0.78);max-width:64ch;margin-bottom:1.75rem}
.hero__support{margin-top:1.5rem;font-weight:600;letter-spacing:-.01em;color:rgba(232,238,245,0.6)}

/* Button rows */
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}
.btn-row--center{justify-content:center}

/* Blue-bullet lists ... factual enumerations, not benefit checkmarks */
.bullet-list{list-style:none;margin:1rem 0;padding:0}
.bullet-list li{position:relative;padding-left:1.4rem;margin-bottom:.5rem}
.bullet-list li::before{content:"\25CF";position:absolute;left:0;top:.42rem;font-size:.62em;color:var(--color-accent);line-height:1}

/* Card grids */
.card-grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));min-width:0}
.card-grid--2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-medium);padding:1.5rem;min-width:0;transition:box-shadow .15s,border-color .15s,transform .15s}
.card--raised{box-shadow:var(--shadow-card)}
.card h3{font-family:var(--font-display);font-weight:400;font-size:1.12rem;letter-spacing:-.01em;margin-bottom:.5rem}
.card p{color:var(--color-text-muted);font-size:.96rem}
.card__num{display:inline-flex;align-items:center;justify-content:center;width:1.9rem;height:1.9rem;border-radius:var(--radius-small);background:var(--color-accent);color:#fff;font-size:.85rem;font-weight:600;margin-bottom:.75rem}
a.card{display:block;text-decoration:none;color:inherit}
a.card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-card-hover);transform:translateY(-2px);text-decoration:none}

/* Two-halves split ... "the website is only half the system" */
.split{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));min-width:0}
.split__half{border:1px solid var(--color-border);border-radius:var(--radius-medium);padding:1.6rem;min-width:0}
.split__half--accent{border-color:var(--color-accent);background:var(--color-panel-soft)}
.split__label{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--color-text-muted);font-weight:600;margin-bottom:.5rem}

/* The operating loop */
.loop{display:grid;gap:.85rem;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));min-width:0;counter-reset:loopstep}
.loop__step{border:1px solid var(--color-border);border-left:3px solid var(--color-accent);border-radius:var(--radius-small);padding:1.1rem 1.15rem;background:var(--color-bg);min-width:0}
.loop__name{font-weight:600;letter-spacing:-.01em;margin-bottom:.3rem}
.loop__step p{font-size:.92rem;color:var(--color-text-muted);margin:0}

/* Old model vs system model */
.compare{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));min-width:0}
.compare__col{border:1px solid var(--color-border);border-radius:var(--radius-medium);padding:1.5rem;min-width:0}
.compare__col--old{background:var(--color-panel)}
.compare__col--new{border-color:var(--color-accent);background:var(--color-panel-soft)}
.compare__title{font-weight:600;margin-bottom:.85rem}

/* Pricing */
.price-card{border:1px solid var(--color-border);border-radius:var(--radius-large);padding:2rem;background:var(--color-bg);min-width:0}
.price-card--primary{border-color:var(--color-accent);box-shadow:var(--shadow-card)}
.price-card__name{font-family:var(--font-display);font-weight:400;font-size:1.3rem;letter-spacing:-.01em;margin-bottom:.4rem}
.price-card__figure{font-size:clamp(1.5rem,3.6vw,2.05rem);font-weight:600;letter-spacing:-.02em;margin:.6rem 0 .3rem}
.price-card__figure span{font-size:1rem;font-weight:400;color:var(--color-text-muted)}
.price-card__note{font-size:.88rem;color:var(--color-text-muted);margin-bottom:1rem}

/* Callout / note */
.callout{border-left:3px solid var(--color-accent);background:var(--color-panel-soft);padding:1.1rem 1.25rem;border-radius:var(--radius-small);margin:1.5rem 0}
.callout p:last-child{margin-bottom:0}
.callout--plain{border-left-color:var(--color-border)}

/* "What this is not" */
.not-list{list-style:none;margin:1rem 0;padding:0}
.not-list li{position:relative;padding-left:1.5rem;margin-bottom:.45rem;color:var(--color-text-muted)}
.not-list li::before{content:"\00D7";position:absolute;left:0;top:-.02rem;color:var(--color-text-muted);font-weight:700}

/* Prose defaults inside page bodies (marketing pages) */
.page-body h2{font-family:var(--font-display);font-weight:300;font-size:clamp(1.45rem,3vw,2rem);letter-spacing:-.02em;line-height:1.25;margin:2.25rem 0 .85rem}
.page-body h3{font-family:var(--font-display);font-weight:400;font-size:1.15rem;letter-spacing:-.01em;margin:1.6rem 0 .5rem}
.page-body p{margin-bottom:1rem;max-width:72ch}
.page-body ul,.page-body ol{margin:1rem 0 1rem 1.25rem}
.page-body li{margin-bottom:.45rem}
.page-body table{width:100%;border-collapse:collapse;margin:1.25rem 0;font-size:.95rem}
.page-body th,.page-body td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--color-border);vertical-align:top}
.page-body th{font-weight:600}
.table-scroll{overflow-x:auto;min-width:0}

@media (max-width:640px){
  .section{padding:2.75rem 0}
  .hero{padding:3rem 0 2.5rem}
  .btn-row .btn{width:100%;text-align:center}
}

/* Marketing pages (templates/home.php) render directly into <main> with no
   .page-wrapper around them (see templates/layouts/default.php), so the
   sections are naturally full-bleed already and .page-body--marketing needs
   no width/margin tricks. A prior 100vw + negative-margin version of this
   rule overflowed horizontally on any page with a vertical scrollbar. */
.page-body--marketing{min-width:0}
/* Guard against any wide child (tables, long code) forcing a horizontal scrollbar. */
.content-main,.content-layout{min-width:0}

/* Walkthrough form */
.wt-form{max-width:640px}
.wt-field{margin-bottom:1.1rem}
.wt-field label{display:block;font-weight:600;font-size:.93rem;margin-bottom:.35rem}
.wt-field input,.wt-field select,.wt-field textarea{
  width:100%;box-sizing:border-box;padding:.65rem .8rem;font:inherit;font-size:1rem;
  color:var(--color-text);background:var(--color-bg);
  border:1px solid var(--color-border);border-radius:var(--radius-small);
}
.wt-field input:focus,.wt-field select:focus,.wt-field textarea:focus{
  outline:2px solid var(--color-accent);outline-offset:1px;border-color:var(--color-accent);
}
.wt-field textarea{resize:vertical;min-height:110px}
/* Honeypot: off-screen rather than display:none, which some bots detect. */
.wt-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* =============================================================
   Prose ... shared typography for standalone content records
   (About/default pages, FAQ items, glossary terms, directory
   listings, proof entries, case studies). Same rhythm as
   .page-body above, plus a title treatment for the record H1.
   ============================================================= */
.prose{min-width:0}
.prose > h1{
  font-family:var(--font-display);font-weight:200;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4vw,2.6rem);line-height:1.2;
  margin:0 0 1.25rem;padding-bottom:1rem;
  border-bottom:2px solid var(--color-accent);
}
.prose h2{font-family:var(--font-display);font-weight:400;font-size:1.55rem;letter-spacing:-.01em;margin:2rem 0 .6rem;color:var(--color-text)}
.prose h3{font-size:1.2rem;font-weight:600;margin:1.4rem 0 .4rem}
.prose p{margin:0 0 1rem;max-width:72ch}
.prose ul,.prose ol{margin:0 0 1rem 1.25rem}
.prose li{margin-bottom:.4rem}
.prose strong{font-weight:600;color:var(--color-text)}
.prose a{color:var(--color-accent)}
.prose dl{margin:1.25rem 0}
.prose dt{font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted);margin-top:.85rem}
.prose dd{margin:.2rem 0 0;font-size:.98rem}

/* FAQ item / glossary term / proof / case-study lead lines */
.glossary-term__aka{color:var(--color-text-muted);font-size:.92rem;font-style:italic;margin-bottom:.75rem}
.glossary-term__short-def{font-size:1.1rem;line-height:1.55;color:var(--color-text);margin-bottom:1.25rem}
.proof-entry__summary,
.case-study__summary{font-size:1.1rem;line-height:1.6;color:var(--color-text);margin-bottom:0}
.proof-entry__section,
.case-study__section{margin-top:1.75rem}
.proof-entry__outcome,
.case-study__key-takeaway{
  margin-top:2rem;padding:1.25rem 1.4rem;border-radius:var(--radius-medium);
  border-left:3px solid var(--color-accent-cyan);background:var(--color-panel-soft);
}
.proof-entry__outcome h2,
.case-study__key-takeaway h2{margin-top:0}
.proof-entry__outcome p,
.case-study__key-takeaway p{margin-bottom:0;font-weight:600}

/* =============================================================
   FAQ hub
   ============================================================= */
.faq-index > h1{
  font-family:var(--font-display);font-weight:200;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4vw,2.6rem);margin:0 0 1.75rem;
  padding-bottom:1rem;border-bottom:2px solid var(--color-accent);
}
.faq-index__group{margin-bottom:2.25rem}
.faq-index__group h2{font-family:var(--font-display);font-weight:400;font-size:1.3rem;letter-spacing:-.01em;margin:0 0 .9rem}
.faq-index__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.faq-index__list li{border:1px solid var(--color-border);border-radius:var(--radius-medium);background:var(--color-bg)}
.faq-index__list a{
  display:block;padding:.9rem 1.1rem;color:var(--color-text);text-decoration:none;font-weight:500;
  transition:border-color .15s,color .15s;
}
.faq-index__list li:hover{border-color:var(--color-accent)}
.faq-index__list a:hover{color:var(--color-accent)}

/* =============================================================
   Glossary
   ============================================================= */
.glossary-index > h1{
  font-family:var(--font-display);font-weight:200;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4vw,2.6rem);margin:0 0 1.75rem;
  padding-bottom:1rem;border-bottom:2px solid var(--color-accent);
}
.glossary-index__letter-group{margin-bottom:2rem}
.glossary-index__letter-group h2{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.1rem;height:2.1rem;border-radius:var(--radius-small);
  background:var(--color-accent);color:#fff;
  font-family:var(--font-display);font-weight:500;font-size:1rem;
  margin:0 0 .9rem;
}
.glossary-index__list{list-style:none;margin:0;padding:0;display:grid;gap:.6rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.glossary-index__list li{border:1px solid var(--color-border);border-radius:var(--radius-medium);padding:.9rem 1.1rem;background:var(--color-bg);transition:border-color .15s}
.glossary-index__list li:hover{border-color:var(--color-accent)}
.glossary-index__list a{color:var(--color-text);text-decoration:none;font-weight:500}
.glossary-index__list a:hover{color:var(--color-accent)}
.glossary-index__short-def{margin:.35rem 0 0;color:var(--color-text-muted);font-size:.86rem;line-height:1.45}

/* =============================================================
   Directory
   ============================================================= */
.directory-root > h1,
.directory-category > h1{
  font-family:var(--font-display);font-weight:200;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4vw,2.6rem);margin:0 0 1rem;
}
.directory-category__description{color:var(--color-text-muted);max-width:68ch;margin-bottom:1.75rem}
.directory-category__subcategories,
.directory-category__listings{margin-top:2.5rem}
.directory-category__subcategories h2,
.directory-category__listings h2{font-family:var(--font-display);font-weight:400;font-size:1.4rem;letter-spacing:-.01em;margin:0 0 1rem}

.directory-root__grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.directory-category-card{
  display:block;background:var(--color-bg);border:1px solid var(--color-border);
  border-radius:var(--radius-medium);padding:1.4rem;text-decoration:none;color:var(--color-text);
  transition:border-color .15s,box-shadow .15s,transform .15s;
}
.directory-category-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-card-hover);transform:translateY(-2px);color:var(--color-text)}
.directory-category-card h2,
.directory-category-card h3{font-family:var(--font-display);font-weight:400;font-size:1.1rem;letter-spacing:-.01em;margin:0 0 .4rem}
.directory-category-card p{color:var(--color-text-muted);font-size:.9rem;margin:0}

.directory-listing-grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.directory-listing-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-medium);overflow:hidden}
.directory-listing-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.directory-listing-card h3{font-family:var(--font-display);font-weight:400;font-size:1.05rem;letter-spacing:-.01em;margin:1rem 1.1rem .4rem}
.directory-listing-card h3 a{color:var(--color-text);text-decoration:none}
.directory-listing-card h3 a:hover{color:var(--color-accent)}
.directory-listing-card p{color:var(--color-text-muted);font-size:.88rem;margin:0 1.1rem 1.1rem}

.directory-listing__image{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-medium);margin-bottom:1.5rem}
.directory-listing__description{font-size:1.05rem;color:var(--color-text-muted);margin-bottom:1.25rem}

/* =============================================================
   Proof / Case studies ... index card grids
   ============================================================= */
.proof-index > h1,
.case-study-index > h1{
  font-family:var(--font-display);font-weight:200;letter-spacing:-.02em;
  font-size:clamp(1.9rem,4vw,2.6rem);margin:0 0 1.75rem;
  padding-bottom:1rem;border-bottom:2px solid var(--color-accent);
}
.proof-index__grid,
.case-study-index__grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.proof-card,
.case-study-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-medium);padding:1.5rem;transition:border-color .15s,box-shadow .15s,transform .15s}
.proof-card:hover,
.case-study-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}
.proof-card h2,
.case-study-card h2{font-family:var(--font-display);font-weight:400;font-size:1.2rem;letter-spacing:-.01em;margin:0 0 .5rem}
.proof-card h2 a,
.case-study-card h2 a{color:var(--color-text);text-decoration:none}
.proof-card h2 a:hover,
.case-study-card h2 a:hover{color:var(--color-accent)}
.proof-card p,
.case-study-card p{color:var(--color-text-muted);font-size:.92rem;margin:0}

/* ── Mobile ─────────────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
    .site-footer__top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }

    .site-nav {
        display: none;
        position: fixed;
        top: var(--header-height, 64px);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-surface-dark, #0a1628);
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding: 1rem 1.5rem calc(1.5rem + env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        z-index: 99;
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
    }

    /* On mobile, a dropdown's parent link just navigates normally (see
       nav.js) so the children have no other trigger -- show them inline,
       always, under their parent once the mobile panel itself is open. */
    .nav-dropdown {
        position: static;
        box-shadow: none;
        border: none;
        padding: 0 0 0 1rem;
        margin-top: 0.4rem;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }

    .content-layout {
        grid-template-columns: 1fr;
    }

    .content-sidebar {
        position: static;
    }

    .glossary-index__list {
        grid-template-columns: 1fr;
    }

    /* Mobile footer: single column, all text/links at 2x size (build standard). */
    .site-footer__brand-name {
        font-size: 1.5rem;
    }

    .site-footer__tagline,
    .site-footer__contact a {
        font-size: 1.1rem;
    }

    .site-footer__col-heading {
        font-size: 0.95rem;
    }

    .site-footer__links a {
        font-size: 1.15rem;
    }

    .site-footer__disclaimer,
    .site-footer__bottom {
        font-size: 1rem;
    }
}