/* Early AI Demo — aligned with earlydata-website brand system */

:root {
  --brand-blue: #4a8eb8;
  --brand-blue-deep: #4a8eb8;
  --brand-blue-hover: #3d7da6;
  --brand-lime: #7ab82a;
  --brand-lime-hover: #6a9e24;
  --brand-slate: #8a8378;

  --ink: #5c574e;
  --ink-soft: #6e685e;
  --ink-muted: #8a847a;
  --ink-heading: #1e1c19;
  --ink-warm: #8a847a;

  --surface: #fffefb;
  --surface-page: #f7f4ef;
  --surface-elevated: #f4f0ea;
  --border: #ebe6df;
  --border-soft: #ebe6df;
  --accent: #6f675c;
  --accent-hover: #4a453e;
  --accent-soft: color-mix(in srgb, #c4b8a8 22%, transparent);
  --hero-accent-wash: color-mix(in srgb, #d4c4ae 18%, transparent);
  --cover-wash: #f3eee7;
  --warm-shadow: color-mix(in srgb, #8a7a68 9%, transparent);
  --layer-up: var(--brand-lime);
  --layer-mid: var(--brand-blue);
  --layer-down: #4a8f6a;
  --layer-back: #6b8496;
  --layer-core: var(--brand-lime);
  --layer-core-alt: var(--brand-blue);
  --layer-infra: #8a8378;
  --case-friso: var(--brand-blue);
  --case-iff: var(--brand-lime);
  --case-infinitus: var(--layer-down);

  --radius: 8px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-pill: 999px;

  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-heading: "Plus Jakarta Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  --font: var(--font-body);

  --text-xs: 0.8125rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;

  --leading-snug: 1.5;
  --leading-normal: 1.75;
  --leading-relaxed: 1.85;

  --max: 1080px;
  --header-h: 72px;
  --space-page-x: 32px;

  /* legacy aliases used in markup/JS-era class names */
  --green: var(--brand-lime);
  --blue: var(--brand-blue);
  --text: var(--ink-heading);
  --text-2: var(--ink);
  --muted: var(--ink-muted);
  --line: var(--border);
  --bg: var(--surface-page);
  --white: var(--surface);
  --shadow: none;
  --shadow-hover: none;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--surface-page);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

button,
select,
a {
  font-family: inherit;
}

.container {
  width: min(var(--max), calc(100% - 64px));
  margin: 0 auto;
}

/* ========== Header ========== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px) saturate(1.05);
  -webkit-backdrop-filter: blur(12px) saturate(1.05);
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
}

.topbar__inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  line-height: 0;
  position: relative;
  z-index: 1;
}

.brand img {
  height: 26px;
  width: auto;
  max-width: 168px;
  object-fit: contain;
  opacity: 0.88;
  filter: saturate(0.82);
}

.brand:hover img {
  opacity: 0.96;
}

.brand__name {
  display: none;
}

.brand__title,
.brand__badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface-elevated);
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: var(--weight-medium);
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  white-space: nowrap;
  line-height: 1;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.nav a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: 6px 11px;
  border-radius: var(--radius-pill);
  transition: background 0.22s ease, color 0.22s ease;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--ink-heading);
  background: var(--surface-elevated);
}

.nav a.active {
  background: color-mix(in srgb, #d4c4ae 18%, var(--surface));
  color: var(--ink-heading);
  font-weight: var(--weight-semibold);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-admin {
  height: 34px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-admin:hover {
  background: var(--surface-elevated);
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
  color: var(--ink-heading);
}

.btn-admin svg path {
  stroke: currentColor;
}

.admin-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 148px;
  padding: 6px;
  display: none;
  z-index: 20;
}

.admin-menu.open {
  display: block;
}

.admin-menu button {
  width: 100%;
  border: 0;
  background: none;
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--ink);
  cursor: pointer;
}

.admin-menu button:hover {
  background: var(--surface-elevated);
  color: var(--ink-heading);
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  color: var(--ink-soft);
  cursor: pointer;
  max-width: 148px;
}

.user-chip:hover {
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
  color: var(--ink-heading);
}

.user-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #c4b8a8;
  flex-shrink: 0;
}

#userChipName {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-icon {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 34px;
  padding: 0 10px;
  border: 0;
  background: transparent;
  color: var(--ink-muted);
  font-size: var(--text-xs);
  cursor: pointer;
  border-radius: var(--radius-md);
}

.link-icon.outlined {
  border: 1px solid var(--border);
  background: var(--surface);
}

.link-icon:hover {
  color: var(--ink-heading);
  background: var(--surface-elevated);
}

.back-site {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.back-site:hover {
  background: var(--surface-elevated);
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
  color: var(--ink-heading);
}

.lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--ink-muted);
}

.lang button {
  border: 0;
  background: none;
  color: var(--ink-muted);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  cursor: pointer;
  padding: 4px 2px;
}

.lang button:hover {
  color: var(--ink-heading);
}

.lang button.active {
  color: var(--ink-heading);
  font-weight: var(--weight-semibold);
}

.lang span {
  color: var(--border);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  place-items: center;
}

/* ========== Hero ========== */
.hero {
  padding: clamp(72px, 12vh, 120px) 0 48px;
  background:
    radial-gradient(ellipse 90% 70% at 8% -10%, var(--hero-accent-wash), transparent 58%),
    var(--surface-page);
  border-bottom: 1px solid var(--border);
}

.hero__intro {
  max-width: 40rem;
  margin-bottom: 40px;
  position: relative;
}

.pill {
  display: inline-block;
  margin-bottom: 16px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: clamp(1.75rem, 1.15rem + 1.6vw, 2.5rem);
  font-weight: var(--weight-normal);
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--ink-warm);
}

.hero__sub {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--ink-muted);
  max-width: 34rem;
}

.collapse-btn {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink-muted);
  font-size: var(--text-xs);
  cursor: pointer;
}

.collapse-btn:hover {
  color: var(--ink-heading);
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
}

/* ========== Enterprise Stack ========== */
.stack-wrap {
  overflow: hidden;
  transition: max-height 0.45s ease, opacity 0.3s ease, margin 0.3s ease;
  max-height: 1400px;
  opacity: 1;
}

.stack-wrap.collapsed {
  max-height: 0;
  opacity: 0;
  margin: 0;
}

.stack {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px 24px;
}

.stack-rings {
  display: none;
}

.stack-head {
  text-align: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.stack-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 1rem + 0.6vw, 1.4rem);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  color: var(--ink-heading);
  margin-bottom: 6px;
}

.stack-head p {
  font-size: var(--text-sm);
  color: var(--ink-muted);
  margin-bottom: 12px;
}

.stack-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.stack-badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #c4b8a8;
}

.stack-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.stack-group {
  min-width: 0;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-page);
}

.stack-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  color: var(--ink-muted);
  background: var(--surface);
  border: 1px solid var(--border);
}

.stack-label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.mini-grid.two {
  grid-template-columns: 1fr 1fr;
}

.mini-card,
.core-card,
.infra-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 12px 12px 11px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  width: 100%;
}

.mini-card:hover,
.core-card:hover,
.infra-card:hover {
  background: var(--surface);
}

.mini-card strong,
.core-card strong,
.infra-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--ink-heading);
  margin-bottom: 2px;
}

.mini-card span,
.core-card span,
.infra-card span {
  display: block;
  font-size: 11px;
  color: var(--ink-muted);
  line-height: 1.4;
}

.layer-up {
  background: color-mix(in srgb, var(--layer-up) 9%, var(--surface));
  border-color: color-mix(in srgb, var(--layer-up) 22%, var(--border));
}
.layer-up .stack-label {
  color: color-mix(in srgb, var(--layer-up) 62%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--layer-up) 28%, var(--border));
  background: color-mix(in srgb, var(--layer-up) 8%, var(--surface));
}
.layer-up .mini-card {
  border-color: color-mix(in srgb, var(--layer-up) 20%, var(--border));
  border-left: 3px solid color-mix(in srgb, var(--layer-up) 58%, var(--border));
  background: color-mix(in srgb, var(--layer-up) 6%, var(--surface));
}
.layer-up .mini-card:hover {
  border-color: color-mix(in srgb, var(--layer-up) 36%, var(--border));
  background: var(--surface);
}

.layer-mid {
  background: color-mix(in srgb, var(--layer-mid) 9%, var(--surface));
  border-color: color-mix(in srgb, var(--layer-mid) 22%, var(--border));
}
.layer-mid .stack-label {
  color: color-mix(in srgb, var(--layer-mid) 58%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--layer-mid) 28%, var(--border));
  background: color-mix(in srgb, var(--layer-mid) 8%, var(--surface));
}
.layer-mid .mini-card {
  border-color: color-mix(in srgb, var(--layer-mid) 20%, var(--border));
  border-left: 3px solid color-mix(in srgb, var(--layer-mid) 58%, var(--border));
  background: color-mix(in srgb, var(--layer-mid) 6%, var(--surface));
}
.layer-mid .mini-card:hover {
  border-color: color-mix(in srgb, var(--layer-mid) 36%, var(--border));
  background: var(--surface);
}

.layer-down {
  background: color-mix(in srgb, var(--layer-down) 9%, var(--surface));
  border-color: color-mix(in srgb, var(--layer-down) 22%, var(--border));
}
.layer-down .stack-label {
  color: color-mix(in srgb, var(--layer-down) 58%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--layer-down) 28%, var(--border));
  background: color-mix(in srgb, var(--layer-down) 8%, var(--surface));
}
.layer-down .mini-card {
  border-color: color-mix(in srgb, var(--layer-down) 20%, var(--border));
  border-left: 3px solid color-mix(in srgb, var(--layer-down) 58%, var(--border));
  background: color-mix(in srgb, var(--layer-down) 6%, var(--surface));
}
.layer-down .mini-card:hover {
  border-color: color-mix(in srgb, var(--layer-down) 36%, var(--border));
  background: var(--surface);
}

.layer-back {
  background: color-mix(in srgb, var(--layer-back) 10%, var(--surface));
  border-color: color-mix(in srgb, var(--layer-back) 22%, var(--border));
}
.layer-back .stack-label {
  color: color-mix(in srgb, var(--layer-back) 55%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--layer-back) 28%, var(--border));
  background: color-mix(in srgb, var(--layer-back) 8%, var(--surface));
}
.layer-back .mini-card {
  border-color: color-mix(in srgb, var(--layer-back) 20%, var(--border));
  border-left: 3px solid color-mix(in srgb, var(--layer-back) 55%, var(--border));
  background: color-mix(in srgb, var(--layer-back) 6%, var(--surface));
}
.layer-back .mini-card:hover {
  border-color: color-mix(in srgb, var(--layer-back) 36%, var(--border));
  background: var(--surface);
}

.core-box.layer-core {
  margin: 8px 0 16px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--layer-core) 24%, color-mix(in srgb, var(--layer-core-alt) 14%, var(--border)));
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--layer-core) 10%, var(--surface)) 0%,
    var(--surface) 48%,
    color-mix(in srgb, var(--layer-core-alt) 8%, var(--surface)) 100%
  );
}
.layer-core .stack-label {
  color: color-mix(in srgb, var(--layer-core) 62%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--layer-core) 28%, var(--border));
  background: color-mix(in srgb, var(--layer-core) 8%, var(--surface));
}

.core-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.core-card.sales {
  border-color: color-mix(in srgb, var(--layer-core) 28%, var(--border));
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--layer-core) 10%, var(--surface)) 0%,
    var(--surface) 100%
  );
}
.core-card.sales strong {
  color: color-mix(in srgb, var(--layer-core) 62%, var(--ink-heading));
}
.core-card.sales:hover {
  border-color: color-mix(in srgb, var(--layer-core) 42%, var(--border));
}

.core-card.crm {
  border-color: color-mix(in srgb, var(--layer-core-alt) 28%, var(--border));
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--layer-core-alt) 10%, var(--surface)) 0%,
    var(--surface) 100%
  );
}
.core-card.crm strong {
  color: color-mix(in srgb, var(--layer-core-alt) 55%, var(--ink-heading));
}
.core-card.crm:hover {
  border-color: color-mix(in srgb, var(--layer-core-alt) 42%, var(--border));
}

.infra-row.layer-infra {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--layer-infra) 18%, var(--border));
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--layer-mid) 6%, var(--surface)) 0%,
    color-mix(in srgb, var(--layer-up) 7%, var(--surface)) 50%,
    color-mix(in srgb, var(--layer-mid) 6%, var(--surface)) 100%
  );
}

.layer-infra .infra-card {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-color: color-mix(in srgb, var(--layer-infra) 16%, var(--border));
  border-left: 3px solid color-mix(in srgb, var(--layer-infra) 45%, var(--border));
}
.layer-infra .infra-card:hover {
  border-color: color-mix(in srgb, var(--layer-infra) 32%, var(--border));
  background: var(--surface);
}

/* ========== Demos section ========== */
.demos {
  padding: 72px 0 96px;
  background: var(--surface-page);
}

.demos__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 48px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.demos__head h2 {
  font-family: var(--font-body);
  font-size: clamp(1.5rem, 1.1rem + 1.2vw, 2rem);
  font-weight: var(--weight-normal);
  letter-spacing: 0.06em;
  color: var(--ink-warm);
}

.filter {
  position: relative;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--ink-soft);
}

.filter-btn b {
  color: var(--ink-heading);
  font-weight: var(--weight-medium);
}

.filter-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 160px;
  padding: 6px;
  display: none;
  z-index: 10;
}

.filter-menu.open {
  display: block;
}

.filter-menu button {
  width: 100%;
  border: 0;
  background: none;
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  cursor: pointer;
  color: var(--ink-soft);
}

.filter-menu button:hover,
.filter-menu button.active {
  background: color-mix(in srgb, #d4c4ae 16%, var(--surface));
  color: var(--ink-heading);
}

.cat {
  margin-bottom: 56px;
}

.cat-banner {
  margin-bottom: 24px;
  padding: 0 0 16px;
  border-bottom: 1px solid var(--border);
  background: none;
  border-radius: 0;
  border-left: 0;
  border-right: 0;
  border-top: 0;
}

.cat-banner.yellow,
.cat-banner.mint,
.cat-banner.sky,
.cat-banner.case {
  background: none;
  border: 0;
  border-bottom: 1px solid var(--border);
}

.cat-banner h3 {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: var(--weight-medium);
  color: var(--ink-heading);
  letter-spacing: 0.04em;
}

.cat-banner p {
  color: var(--ink-muted);
  font-size: var(--text-sm);
  margin-top: 4px;
}

.cat-banner.case {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.perm-chip {
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--ink-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

/* ========== Demo cards ========== */
.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
  box-shadow: 0 1px 0 color-mix(in srgb, #8a7a68 5%, transparent);
}

.demo-card:hover {
  transform: none;
  border-color: color-mix(in srgb, #c4b8a8 45%, var(--border));
  background: var(--surface);
  box-shadow: 0 10px 28px var(--warm-shadow);
}

.demo-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 0;
  gap: 8px;
}

.demo-card__head h4 {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.badge {
  font-size: 11px;
  font-weight: var(--weight-medium);
  color: var(--ink-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  white-space: nowrap;
}

.demo-card__cover {
  position: relative;
  isolation: isolate;
  height: 188px;
  margin: 12px 12px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
}

.demo-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  image-rendering: auto;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  display: block;
  filter: saturate(0.7) sepia(0.14) contrast(0.97) brightness(1.03);
}

.demo-card__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: rgba(210, 190, 165, 0.16);
  mix-blend-mode: soft-light;
}

.demo-card__cover .badge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(6px);
}

.demo-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.demo-card__body h3 {
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  color: var(--ink-heading);
  line-height: var(--leading-snug);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.demo-card__body h3 .en {
  font-family: var(--font-heading);
}

.demo-card__body p {
  color: var(--ink-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  flex: 1;
}

.demo-card__foot {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.demo-card:hover .demo-card__foot {
  color: var(--accent-hover);
}

.demo-card__foot .arrow {
  transition: transform 0.2s ease;
}

.demo-card:hover .demo-card__foot .arrow {
  transform: translateX(3px);
}

/* ========== Case cards ========== */
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.case-client,
.case-product {
  font-size: 11px;
  font-weight: var(--weight-medium);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  border: 1px solid var(--border);
  background: transparent;
}

.case-client {
  color: var(--ink-soft);
  border-color: var(--border);
  background: var(--surface-elevated);
}

.case-product {
  color: var(--ink-muted);
  border-color: var(--border);
  background: transparent;
}

.case-cover {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  height: 188px;
}

.case-cover::after {
  content: none;
  display: none;
}

.case-cover img {
  filter: none;
}

.case-cover img.case-cover__logo,
.case-cover span.case-cover__logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
}

.case-cover span.case-cover__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  line-height: 1.1;
  text-align: center;
}

.case-cover__text {
  color: var(--ink-heading);
  min-width: 0;
}

.case-cover__text em {
  display: block;
  font-style: normal;
  font-size: 11px;
  color: var(--ink-muted);
  margin-bottom: 4px;
}

.case-cover__text strong {
  display: block;
  font-size: 16px;
  line-height: 1.35;
  font-weight: var(--weight-semibold);
  color: var(--ink-heading);
}

.case-cover__text span {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--ink-muted);
}

.case-cover.friso,
.case-cover.iff,
.case-cover.infinitus {
  background: var(--cover-wash);
}

.case-card[data-client="friso"] {
  border-color: color-mix(in srgb, var(--case-friso) 22%, var(--border));
}
.case-card[data-client="friso"]:hover {
  border-color: color-mix(in srgb, var(--case-friso) 36%, var(--border));
  box-shadow: 0 10px 28px color-mix(in srgb, var(--case-friso) 10%, transparent);
}
.case-card[data-client="friso"] .case-cover__logo {
  border-color: color-mix(in srgb, var(--case-friso) 22%, var(--border));
  background: color-mix(in srgb, var(--case-friso) 6%, var(--surface));
}
.case-card[data-client="friso"] .case-cover {
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--case-friso) 12%, var(--surface)) 0%,
    color-mix(in srgb, var(--case-friso) 4%, var(--cover-wash)) 100%
  );
  border-color: color-mix(in srgb, var(--case-friso) 16%, var(--border));
}
.case-card[data-client="friso"] .case-client {
  color: color-mix(in srgb, var(--case-friso) 55%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--case-friso) 24%, var(--border));
  background: color-mix(in srgb, var(--case-friso) 8%, var(--surface));
}
.case-card[data-client="friso"] .demo-card__foot {
  color: color-mix(in srgb, var(--case-friso) 48%, var(--ink-heading));
}

.case-card[data-client="iff"] {
  border-color: color-mix(in srgb, var(--case-iff) 22%, var(--border));
}
.case-card[data-client="iff"]:hover {
  border-color: color-mix(in srgb, var(--case-iff) 36%, var(--border));
  box-shadow: 0 10px 28px color-mix(in srgb, var(--case-iff) 10%, transparent);
}
.case-card[data-client="iff"] .case-cover {
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--case-iff) 12%, var(--surface)) 0%,
    color-mix(in srgb, var(--case-iff) 4%, var(--cover-wash)) 100%
  );
  border-color: color-mix(in srgb, var(--case-iff) 16%, var(--border));
}
.case-card[data-client="iff"] .case-cover__logo {
  color: color-mix(in srgb, var(--case-iff) 58%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--case-iff) 22%, var(--border));
  background: color-mix(in srgb, var(--case-iff) 6%, var(--surface));
}
.case-card[data-client="iff"] .case-client {
  color: color-mix(in srgb, var(--case-iff) 58%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--case-iff) 24%, var(--border));
  background: color-mix(in srgb, var(--case-iff) 8%, var(--surface));
}
.case-card[data-client="iff"] .demo-card__foot {
  color: color-mix(in srgb, var(--case-iff) 48%, var(--ink-heading));
}

.case-card[data-client="infinitus"] {
  border-color: color-mix(in srgb, var(--case-infinitus) 22%, var(--border));
}
.case-card[data-client="infinitus"]:hover {
  border-color: color-mix(in srgb, var(--case-infinitus) 36%, var(--border));
  box-shadow: 0 10px 28px color-mix(in srgb, var(--case-infinitus) 10%, transparent);
}
.case-card[data-client="infinitus"] .case-cover {
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--case-infinitus) 12%, var(--surface)) 0%,
    color-mix(in srgb, var(--case-infinitus) 4%, var(--cover-wash)) 100%
  );
  border-color: color-mix(in srgb, var(--case-infinitus) 16%, var(--border));
}
.case-card[data-client="infinitus"] .case-cover__logo {
  color: color-mix(in srgb, var(--case-infinitus) 58%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--case-infinitus) 22%, var(--border));
  background: color-mix(in srgb, var(--case-infinitus) 6%, var(--surface));
  font-size: 12px;
}
.case-card[data-client="infinitus"] .case-client {
  color: color-mix(in srgb, var(--case-infinitus) 55%, var(--ink-heading));
  border-color: color-mix(in srgb, var(--case-infinitus) 24%, var(--border));
  background: color-mix(in srgb, var(--case-infinitus) 8%, var(--surface));
}
.case-card[data-client="infinitus"] .demo-card__foot {
  color: color-mix(in srgb, var(--case-infinitus) 48%, var(--ink-heading));
}

.case-cover .badge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  color: var(--ink-soft);
}

.case-empty {
  margin-top: 8px;
  padding: 28px;
  text-align: center;
  color: var(--ink-muted);
  font-size: var(--text-sm);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.identity-box p {
  margin-bottom: 14px;
}

.identity-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.identity-item {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.identity-item:hover,
.identity-item.active {
  border-color: color-mix(in srgb, #c4b8a8 50%, var(--border));
  background: color-mix(in srgb, #d4c4ae 12%, var(--surface));
}

.identity-item strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--ink-heading);
  font-weight: var(--weight-medium);
}

.identity-item span {
  display: block;
  margin-top: 2px;
  font-size: var(--text-xs);
  color: var(--ink-muted);
}

/* ========== Modal ========== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(28, 31, 38, 0.36);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 80;
  padding: 20px;
}

.modal.open {
  display: flex;
}

.login-gate {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--surface-page) 92%, transparent);
  backdrop-filter: blur(14px) saturate(1.05);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
}

.login-gate.open {
  display: flex;
}

body.is-locked {
  overflow: hidden;
}

body.is-locked .chatbot {
  display: none;
}

.login-gate__card {
  width: min(440px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px 28px;
}

.login-gate__card img {
  height: 26px;
  width: auto;
  margin-bottom: 18px;
  opacity: 0.88;
}

.login-gate__kicker {
  margin: 0 0 8px;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.login-gate__card h1 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  font-weight: var(--weight-medium);
  color: var(--ink-heading);
  letter-spacing: 0.02em;
}

.login-gate__card > p {
  margin: 0 0 20px;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--ink-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}

.login-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--ink-soft);
}

.login-form__field input {
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink-heading);
  font-size: var(--text-sm);
  font-family: inherit;
}

.login-form__field input:focus {
  outline: 2px solid color-mix(in srgb, #c4b8a8 45%, var(--border));
  outline-offset: 1px;
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
}

.login-form__error {
  margin: 0;
  font-size: var(--text-xs);
  color: #b42318;
}

.login-form__submit {
  width: 100%;
  height: 42px;
  margin-top: 4px;
}

.login-gate .identity-list {
  margin-bottom: 18px;
}

.login-gate__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--ink-muted);
}

.login-gate__links a {
  color: var(--ink-heading);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

.login-gate__links a:hover {
  border-bottom-color: var(--ink-heading);
}

.modal__box {
  width: min(480px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: none;
}

.modal__box h3 {
  font-size: 1.125rem;
  font-weight: var(--weight-medium);
  color: var(--ink-heading);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.modal__box p {
  color: var(--ink-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: 20px;
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--ink);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  border-color: color-mix(in srgb, #c4b8a8 40%, var(--border));
  color: var(--ink-heading);
}

.btn.primary {
  background: var(--ink-heading);
  color: var(--surface);
  border-color: var(--ink-heading);
}

.btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--surface);
}

/* ========== Chatbot ========== */
.chatbot {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
}

.chatbot__fab {
  width: 52px;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink-soft);
  box-shadow: 0 8px 20px var(--warm-shadow);
  cursor: pointer;
  overflow: hidden;
  padding: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.chatbot__fab:hover {
  border-color: color-mix(in srgb, #c4b8a8 45%, var(--border));
  background: var(--surface-elevated);
  color: var(--ink-heading);
}

.chatbot__fab svg {
  display: none;
}

.chatbot__fab::before {
  content: "AI";
}

.chatbot__panel {
  position: absolute;
  right: 0;
  bottom: 64px;
  width: 280px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: none;
  padding: 16px;
  display: none;
}

.chatbot__panel.open {
  display: block;
}

.chatbot__panel strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-heading);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
}

.chatbot__panel p {
  font-size: var(--text-sm);
  color: var(--ink-muted);
  line-height: var(--leading-relaxed);
}

/* ========== Footer ========== */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--ink-muted);
  font-size: var(--text-xs);
  background: var(--surface-page);
}

.hidden {
  display: none !important;
}

/* ========== Responsive ========== */
@media (max-width: 1200px) {
  .container,
  .topbar__inner {
    width: min(1180px, calc(100% - 40px));
  }

  .nav {
    display: none;
  }

  .nav.open {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 10px 16px 16px;
    align-items: stretch;
    overflow: visible;
  }

  .menu-toggle {
    display: grid;
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .topbar__actions .link-icon,
  .lang,
  .user-chip {
    display: none;
  }

  .brand__title,
  .brand__badge {
    display: none;
  }

  .cat-banner.case {
    flex-direction: column;
    align-items: flex-start;
  }

  .stack-row,
  .core-cards,
  .infra-row,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 56px;
  }
}