/* =====================================================================
   Zerus AI — static site styles
   Fluent-inspired (Microsoft AI page), recolored to blue / navy.
   No build step: plain CSS, system font stack (Segoe UI first).
   ===================================================================== */

:root {
  /* Brand — blue & navy */
  --navy-900: #061a30;
  --navy-800: #0a2540;
  --navy-700: #103a63;
  --blue-700: #00498f;
  --blue-600: #0067c5;   /* primary action */
  --blue-500: #1f86e0;
  --sky-400: #4cb3f5;
  --sky-300: #8fd3ff;
  --cyan-300: #7fe3e0;

  /* Ink / text */
  --ink: #14181f;
  --ink-2: #444c57;
  --ink-3: #6b7480;

  /* Surfaces */
  --bg: #ffffff;
  --bg-soft: #f3f6fb;
  --bg-soft-2: #eaf1fa;
  --line: #e3e8f0;
  --line-2: #d3dae6;

  --green: #1a9d5a;       /* live / true status */

  --maxw: 1180px;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 2px rgba(16, 33, 60, 0.06);
  --shadow-md: 0 8px 24px -10px rgba(16, 33, 60, 0.18);
  --shadow-lg: 0 26px 60px -28px rgba(10, 37, 64, 0.45);

  --font: "Segoe UI", "Segoe UI Web (West European)", -apple-system,
    BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

/* skip navigation (visible on keyboard focus only) */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
  background: var(--blue-600);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 6px 0;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { left: 0; top: 0; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
  overflow-x: hidden;
}

/* Let grid/flex children shrink instead of forcing horizontal overflow */
.hero__grid > *, .split > *, .partner > *, .grid > * { min-width: 0; }
h1, h2, h3 { overflow-wrap: break-word; }

img { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.01em;
}

::selection { background: var(--blue-600); color: #fff; }

:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--soft { background: var(--bg-soft); }

.center { text-align: center; }
.measure { max-width: 720px; }
.measure-narrow { max-width: 580px; }
.mx-auto { margin-left: auto; margin-right: auto; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 16px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
}
.section-head p {
  color: var(--ink-2);
  font-size: 1.075rem;
  margin: 16px 0 0;
}

.lead { color: var(--ink-2); font-size: 1.15rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.18s ease, box-shadow 0.18s ease,
    transform 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }

.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 10px 22px -10px rgba(0, 103, 197, 0.7);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-secondary:hover { border-color: var(--ink-3); background: var(--bg-soft); }

.btn-onnavy { background: #fff; color: var(--navy-800); }
.btn-onnavy:hover { background: var(--sky-300); }
.btn-ghost-navy {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.btn-ghost-navy:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

.btn-lg { padding: 14px 30px; font-size: 1.04rem; }

/* text link with chevron */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--blue-600);
  text-decoration: none;
  font-size: 0.96rem;
}
.link-arrow svg { width: 16px; height: 16px; transition: transform 0.18s ease; }
.link-arrow:hover { color: var(--blue-700); }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- Promo bar ---------- */
.promo {
  background: linear-gradient(90deg, var(--navy-800), var(--blue-700));
  color: #fff;
  font-size: 0.9rem;
}
.promo .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 44px;
  padding-top: 8px;
  padding-bottom: 8px;
  text-align: center;
  flex-wrap: wrap;
}
.promo a {
  color: #fff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  flex-shrink: 0;
}
.brand .mark {
  width: 30px; height: 30px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600) 70%, var(--sky-400));
  color: #fff;
  display: grid; place-items: center;
  font-size: 0.92rem; font-weight: 700; letter-spacing: -0.03em;
}
.brand .brand-text { font-size: 1.06rem; }
.brand .brand-text b { font-weight: 700; }
.brand .brand-sub { color: var(--ink-3); font-weight: 400; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-2);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover { color: var(--ink); border-color: var(--blue-600); }

.nav-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  width: 40px; height: 38px;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
  border-bottom: 1px solid var(--line);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 32px;
  align-items: center;
  padding: 78px 0 70px;
  position: relative;
  z-index: 2;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.7rem);
  letter-spacing: -0.02em;
}
.hero p.lead {
  margin: 22px 0 0;
  max-width: 30rem;
}
.hero__cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__note {
  margin-top: 22px;
  font-size: 0.9rem;
  color: var(--ink-3);
}
.hero__note a { color: var(--blue-600); font-weight: 600; text-decoration: none; }
.hero__note a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* flowing ribbon art (CSS mesh, recolored to blue/navy) */
.hero__art {
  position: relative;
  min-height: 360px;
  border-radius: 18px;
  overflow: hidden;
}
.hero__art .ribbon {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(40% 55% at 72% 30%, rgba(76, 179, 245, 0.95), transparent 70%),
    radial-gradient(45% 60% at 30% 70%, rgba(0, 103, 197, 0.9), transparent 72%),
    radial-gradient(38% 50% at 85% 80%, rgba(127, 227, 224, 0.85), transparent 70%),
    radial-gradient(60% 70% at 50% 40%, rgba(16, 58, 99, 0.95), transparent 80%),
    linear-gradient(135deg, var(--navy-800), var(--blue-600));
  filter: saturate(112%);
  animation: drift 22s ease-in-out infinite alternate;
}
.hero__art .ribbon::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    conic-gradient(from 210deg at 65% 45%,
      transparent 0deg,
      rgba(255, 255, 255, 0.22) 60deg,
      transparent 150deg,
      rgba(143, 211, 255, 0.3) 260deg,
      transparent 360deg);
  mix-blend-mode: screen;
  animation: spin 40s linear infinite;
}
.hero__art .sheen {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6, 26, 48, 0.28));
}

@keyframes drift {
  from { transform: translate3d(-3%, -2%, 0) scale(1.05); }
  to   { transform: translate3d(3%, 3%, 0) scale(1.12); }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Sticky sub-nav (anchor bar) ---------- */
.subnav {
  position: sticky;
  top: 60px;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.subnav .container {
  display: flex;
  gap: 26px;
  overflow-x: auto;
  scrollbar-width: none;
}
.subnav .container::-webkit-scrollbar { display: none; }
.subnav a {
  white-space: nowrap;
  padding: 15px 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.subnav a:hover { color: var(--ink); }
.subnav a.is-active { color: var(--blue-600); border-color: var(--blue-600); }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 24px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-2);
}
.card__media {
  height: 140px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600) 65%, var(--sky-400));
  position: relative;
}
.card__media--alt { background: linear-gradient(135deg, var(--blue-700), var(--sky-400) 90%); }
.card__media .ico {
  position: absolute;
  left: 22px; bottom: -22px;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  display: grid; place-items: center;
  color: var(--blue-600);
}
.card__media .ico svg { width: 24px; height: 24px; }
.card__body { padding: 34px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.card__tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 8px;
}
.card__body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.card__body p { margin: 0 0 18px; color: var(--ink-2); font-size: 0.96rem; }
.card__body .link-arrow { margin-top: auto; }

/* simple icon-tile card (no media) */
.icard { padding: 30px 26px; }
.icard .ico {
  width: 52px; height: 52px;
  border-radius: 13px;
  background: var(--bg-soft-2);
  color: var(--blue-600);
  display: grid; place-items: center;
  margin-bottom: 18px;
}
.icard .ico svg { width: 26px; height: 26px; }
.icard h3 { font-size: 1.18rem; margin-bottom: 8px; }
.icard p { margin: 0; color: var(--ink-2); font-size: 0.96rem; }

/* "Zerus delivers" line inside capability cards */
.deliver {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  color: var(--ink-3);
  line-height: 1.5;
}
.deliver b { color: var(--blue-600); font-weight: 600; }

/* numbered step row */
.step { display: grid; grid-template-columns: auto 1fr; gap: 20px; padding: 26px 0; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .n {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--blue-600);
  width: 40px;
}
.step h3 { font-size: 1.2rem; margin-bottom: 6px; }
.step p { margin: 0; color: var(--ink-2); }

/* wide strip */
.strip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.strip p { margin: 0; color: var(--ink-2); }
.strip strong { color: var(--ink); }

/* ---------- Operating-layer panel (light product visual) ---------- */
.layer {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.layer__bar {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
  font-size: 0.84rem; color: var(--ink-3); font-weight: 500;
}
.layer__bar .mini {
  width: 22px; height: 22px; border-radius: 6px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600));
  color: #fff; display: grid; place-items: center;
  font-size: 0.62rem; font-weight: 700;
}
.layer__bar .live { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-weight: 600; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(26,157,90,.5); animation: ping 2.4s ease-out infinite; }
.layer__row {
  display: grid;
  grid-template-columns: 26px 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
}
.layer__row:last-child { border-bottom: 0; }
.layer__row .ix { color: var(--ink-3); font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.layer__row .fn { font-weight: 600; font-size: 0.95rem; }
.layer__row .fn small { display: block; color: var(--ink-3); font-weight: 400; font-size: 0.78rem; }
.layer__row .ag { color: var(--blue-600); font-weight: 600; font-size: 0.82rem; }
.layer__foot { padding: 13px 18px; background: var(--bg-soft); display: flex; justify-content: space-between; font-size: 0.82rem; color: var(--ink-3); }
.layer__foot .ok { color: var(--green); font-weight: 600; }

@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(26,157,90,.5); }
  70% { box-shadow: 0 0 0 7px rgba(26,157,90,0); }
  100% { box-shadow: 0 0 0 0 rgba(26,157,90,0); }
}

/* ---------- Feature split (image + copy) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split--rev .split__media { order: 2; }

/* caption under the operating-layer panel */
.layer-note { margin: 14px 4px 0; font-size: 0.8rem; color: var(--ink-3); }

/* capability chips (About section) */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--blue-700);
  background: var(--bg-soft-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 15px;
  white-space: nowrap;
}

/* simple form (start.html) */
.form { max-width: 640px; display: grid; gap: 20px; }
.form label { font-weight: 600; font-size: 0.95rem; display: grid; gap: 8px; }
.form label small { font-weight: 400; color: var(--ink-3); }
.form input, .form textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  width: 100%;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--blue-600); outline-offset: 1px; border-color: var(--blue-600); }
.form textarea { min-height: 120px; resize: vertical; }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 0.92rem; color: var(--ink-2); }
.form .consent input { width: auto; margin-top: 3px; }
.form-error { color: #b3261e; font-size: 0.9rem; margin: 0; display: none; }

/* photo variants */
.hero__art--photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.card__media--photo { height: 180px; }
.card__media--photo img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Featured partner card ---------- */
.partner {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.partner:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--line-2); }
.partner__main { padding: 38px 40px; }
.partner__row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.partner__main h3 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: 12px; }
.partner__main p { color: var(--ink-2); margin: 0 0 22px; max-width: 36rem; }
.partner__stats {
  border-left: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-soft), #fff);
  padding: 38px 34px;
  display: grid;
  gap: 26px;
  align-content: center;
}
.stat .big { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.02em; }
.stat .lbl { font-size: 0.78rem; color: var(--ink-3); margin-top: 4px; }

.tag {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-3);
}
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--green);
}
.badge--amber { color: #b45309; }
.badge--amber .dot { background: #f59e0b; box-shadow: none; animation: none; }

/* photo banner spanning the featured partner card */
.partner__photo { grid-column: 1 / -1; height: 230px; overflow: hidden; border-bottom: 1px solid var(--line); }
.partner__photo img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Comparison (BCP) ---------- */
.versus { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: stretch; }
.versus .col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 32px 28px;
  text-align: center;
  display: flex; flex-direction: column; justify-content: center;
}
.versus .col.us { border-color: var(--blue-600); box-shadow: inset 0 0 0 1px var(--blue-600); }
.versus .who { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.versus .col.us .who { color: var(--blue-600); }
.versus .num { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.02em; }
.versus .col.us .num { color: var(--blue-600); }
.versus .sub { font-size: 0.92rem; color: var(--ink-2); margin-top: 8px; }
.versus .gap { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 0 6px; }
.versus .gap .x { font-size: 2.4rem; font-weight: 800; color: var(--blue-600); }
.versus .gap .xl { font-size: 0.72rem; color: var(--ink-3); max-width: 11ch; text-align: center; margin-top: 6px; }

/* ---------- FAQ accordion ---------- */
.faq { max-width: 820px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  width: 100%;
  background: none;
  border: 0;
  text-align: left;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink);
  padding: 22px 44px 22px 0;
  position: relative;
  cursor: pointer;
}
.faq__q::after {
  content: "+";
  position: absolute;
  right: 6px; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 400; color: var(--blue-600);
  transition: transform 0.2s ease;
}
.faq__item.open .faq__q::after { content: "\2013"; }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}
.faq__a p { margin: 0 0 22px; color: var(--ink-2); max-width: 70ch; }

/* ---------- CTA band (navy) ---------- */
.cta {
  position: relative;
  overflow: hidden;
  background: radial-gradient(120% 140% at 80% 10%, var(--blue-700), var(--navy-900) 60%);
  color: #fff;
  border-radius: 18px;
  padding: 70px 40px;
  text-align: center;
}
.cta h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); max-width: 24ch; margin: 0 auto; }
.cta p { color: rgba(255, 255, 255, 0.82); font-size: 1.1rem; max-width: 40ch; margin: 18px auto 0; }
.cta__actions { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta__glow { position: absolute; width: 420px; height: 420px; border-radius: 50%; filter: blur(120px); background: rgba(76, 179, 245, 0.4); top: -160px; left: 50%; transform: translateX(-50%); pointer-events: none; }

/* ---------- Footer (navy) ---------- */
.site-footer { background: var(--navy-900); color: #cfd8e6; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding: 64px 0 44px; }
.site-footer .brand { color: #fff; }
.site-footer .brand .brand-sub { color: #91a2bd; }
.footer-about { color: #9fb0c9; margin: 16px 0 0; max-width: 32ch; font-size: 0.94rem; }
.footer-col h4 { color: #fff; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.footer-col a, .footer-col span { color: #aebdd4; text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 0.85rem; color: #8395b0;
}

/* ---------- Reveal on scroll (progressive enhancement) ----------
   Content is visible by default; only the .js-anim flag (set by an inline
   <head> script) opts into the hidden-then-revealed animation, so a JS
   failure or slow load can never leave the page blank. */
.reveal { opacity: 1; transform: none; }
.js-anim .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js-anim .reveal.in { opacity: 1; transform: none; }

/* ---------- Mobile menu panel ---------- */
.mobile-menu { display: none; }

/* =====================================================================
   Responsive
   ===================================================================== */
@media (max-width: 1024px) {
  .hero__grid { gap: 24px; }
  .partner__main { padding: 32px 30px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 860px) {
  .section { padding: 64px 0; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-right .btn-primary { display: none; }

  .hero__grid { grid-template-columns: 1fr; padding: 48px 0 52px; }
  .hero__art { min-height: 240px; order: -1; }

  .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .split, .split--rev .split__media { grid-template-columns: 1fr; order: 0; }
  .split { gap: 28px; }

  .partner { grid-template-columns: 1fr; }
  .partner__stats { border-left: 0; border-top: 1px solid var(--line); grid-template-columns: repeat(3, 1fr); }

  .versus { grid-template-columns: 1fr; }
  .versus .gap { flex-direction: row; gap: 12px; padding: 4px 0; }
  .versus .gap .xl { max-width: none; }

  .footer-top { grid-template-columns: 1fr 1fr; }

  /* mobile menu */
  .mobile-menu.open { display: block; border-top: 1px solid var(--line); background: #fff; }
  .mobile-menu ul { list-style: none; margin: 0; padding: 10px 24px 22px; display: grid; gap: 4px; }
  .mobile-menu a { display: block; padding: 12px 0; color: var(--ink); text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--line); }
  .mobile-menu .btn { width: 100%; justify-content: center; margin-top: 14px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: clamp(1.95rem, 8.5vw, 2.6rem); }
  .partner__stats { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .cta { padding: 52px 24px; }
  .promo .container { font-size: 0.84rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__art .ribbon, .hero__art .ribbon::after, .dot { animation: none; }
  .js-anim .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .partner:hover { transform: none; }
}