:root {
  --bg: #0b1220;
  --surface: #0f1a2e;
  --text: #eaf0ff;
  --muted: #a9b7d0;
  --brand: #2de2c5;
  --light-bg: #f6f8fc;
  --ink: #101828;
  --line: #e4e7ec;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--ink);
  line-height: 1.6;
}
.logo {
  height: 54px; /* executive size, not loud */
  width: auto;
  display: block;
}

@media (max-width: 600px) {
  .logo {
    height: 34px; /* smaller on mobile */
  }
}

.container {
  max-width: 1100px;
  padding: 0 20px;
  margin: 0 auto;
}
.container.narrow {
  max-width: 720px;
}

.topbar {
  background: var(--bg);
  color: var(--text);
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}
.brand span {
  display: block;
  font-size: 13px;
  color: var(--muted);
}

h2 {
  letter-spacing: -0.2px;
}

.section {
  padding: 80px 0; /* slightly more breathing room */
}

.hero {
  background:
    linear-gradient(180deg, rgba(11, 18, 32, 0.92), rgba(6, 11, 20, 0.96)),
    url("assets/data-center-bkg-2020.jpg") center / cover no-repeat;
  color: var(--text);
  padding: 90px 0;
}

.hero h1 {
  font-size: 44px;
  margin-bottom: 10px;
}
.hero-sub {
  font-size: 20px;
  color: var(--muted);
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 15px;
}

.credibility {
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 70px 0;
}
.section.light {
  background: var(--light-bg);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
}

.card {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.checklist {
  list-style: none;
  padding-left: 0;
}
.checklist li {
  margin-bottom: 10px;
}

.btn {
  padding: 12px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
}
.btn-primary {
  background: var(--brand);
  color: #002b25;
}
.btn-secondary {
  border: 1px solid var(--brand);
  color: var(--brand);
}

form input,
form textarea {
  width: 100%;
  margin-bottom: 12px;
  padding: 10px;
  border-radius: 4px;
  border: 1px solid var(--line);
}

.footer {
  background: #0a0f1a;
  color: var(--muted);
  padding: 40px 0;
  font-size: 14px;
}
.footer strong {
  color: #fff;
}
/* Cards  */
.card {
  background: #fff;
  padding: 28px 26px 28px 30px;
  border-radius: 10px;
  border: 1px solid var(--line);
  position: relative;
  transition:
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.card:hover {
  box-shadow: 0 10px 28px rgba(16, 24, 40, 0.08);
  transform: translateY(-2px);
}

/* accent bar */
.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
  background: var(--brand);
  border-radius: 10px 0 0 10px;
  opacity: 0.9;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: 18px;
  font-weight: 600; /* down from 700 */
  color: #1f2937; /* softer than pure ink */
  letter-spacing: 0.15px;
}

.card h3::after {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  margin-top: 10px;
  background: rgba(45, 226, 197, 0.6); /* brand, muted */
}
.card-sub {
  font-size: 13px;
  color: #667085;
  margin-bottom: 14px;
}

.card ul {
  padding-left: 0;
  list-style: none;
}

.card li {
  padding-left: 18px;
  margin-bottom: 10px;
  position: relative;
  font-size: 14.5px;
}

/* subtle dash instead of dot */
.card li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 600;
}

/* Why choose us */
.section-lead {
  font-size: 16.5px;
  color: #475467;
  max-width: 460px;
  margin-top: 12px;
}

.why-us h2 {
  margin-bottom: 22px;
}

.why-intro {
  font-size: 17px;
  color: #475467;
  max-width: 640px;
  margin-bottom: 36px;
}

.why-statements p {
  font-size: 16px;
  color: #344054;
  line-height: 1.7;
  margin-bottom: 26px;
  padding-left: 18px;
  position: relative;
}

/* subtle emphasis marker — not a bullet */
.why-statements p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
  opacity: 0.8;
}

.why-statements p:last-child {
  margin-bottom: 0;
}
.why-statements strong {
  font-weight: 650; /* subtle but visible jump */
  font-size: 16.5px; /* slightly larger than body */
  color: #111827; /* marginally darker */
}
.why-statements p {
  font-size: 16px; /* keep body slightly smaller */
}
@media (max-width: 800px) {
  .why-us .split {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/**/

.section.what-we-do {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.card.critical::before {
  background: #e5533d; /* muted emergency red */
}
/**/
.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 30px;
  align-items: center;
}
.split img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--line);
}
@media (max-width: 100px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.start-low-risk {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.start-low-risk h2 {
  margin-bottom: 22px;
}

.start-low-risk h2 .muted {
  font-weight: 500;
  color: #667085;
}

.start-intro {
  font-size: 16.5px;
  color: #475467;
  max-width: 640px;
  margin-bottom: 34px;
}

.start-points p {
  font-size: 16px;
  line-height: 1.7;
  color: #344054;
  margin-bottom: 22px;
  padding-left: 18px;
  position: relative;
}

.start-points p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
  opacity: 0.7;
}

.start-points strong {
  font-weight: 650;
  font-size: 16.5px;
  color: #111827;
}

.who-we-are {
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 48px;
}

.who-image img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(16, 24, 40, 0.12);
}

/* AI research and services */

.ai-section {
  background: #ffffff;
}

.ai-section h2 {
  margin-bottom: 22px;
}

.ai-intro {
  font-size: 16.5px;
  color: #475467;
  max-width: 640px;
  margin-bottom: 36px;
}

.ai-points p {
  font-size: 16px;
  line-height: 1.7;
  color: #344054;
  margin-bottom: 26px;
  padding-left: 18px;
  position: relative;
}

/* same visual language as other sections */
.ai-points p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
  opacity: 0.75;
}

.ai-points strong {
  font-weight: 650;
  font-size: 16.5px;
  color: #111827;
}

/* mobile */
@media (max-width: 900px) {
  .who-we-are {
    grid-template-columns: 1fr;
  }

  .who-image {
    order: -1; /* image first on mobile */
  }
}

/* ===== Image Lightbox ===== */

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;

  opacity: 0;
  transition: opacity 0.18s ease-out;
}

.lightbox-overlay.open {
  opacity: 1;
}

.lightbox-overlay img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 10px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  cursor: zoom-out;

  transform: scale(0.96);
  transition:
    transform 0.22s cubic-bezier(0.22, 0.61, 0.36, 1),
    opacity 0.18s ease-out;
  opacity: 0;
}

.lightbox-overlay.open img {
  transform: scale(1);
  opacity: 1;
}

.zoomable {
  cursor: zoom-in;
}

.zoomable:hover {
  transform: scale(1.01);
  transition: transform 0.2s ease;
}

.lightbox-overlay.open img {
  transition-delay: 20ms;
}