.loong-support-page {
  --support-primary: #082c6c;
  --support-accent: #1268ff;
  --support-ink: #111827;
  --support-muted: #5b6472;
  --support-line: #dfe5ee;
  background: #f5f7fa;
  color: var(--support-ink);
}

.loong-support-shell {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
}

.loong-support-hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 88px;
  background: #07172f;
  color: #fff;
}

.loong-support-hero::after {
  content: '';
  position: absolute;
  inset: auto -8% -130px 44%;
  height: 260px;
  border: 1px solid rgba(93, 154, 255, 0.28);
  transform: skewX(-24deg);
}

.loong-support-hero .loong-support-shell {
  position: relative;
  z-index: 1;
}

.loong-support-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: #80adff;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.loong-support-kicker i {
  font-size: 22px;
}

.loong-support-hero h1 {
  max-width: 860px;
  margin: 0;
  color: #fff;
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0;
}

.loong-support-hero p {
  max-width: 760px;
  margin: 28px 0 0;
  color: #c8d3e4;
  font-size: 18px;
  line-height: 1.75;
}

.loong-support-section {
  padding: 88px 0 104px;
}

.loong-support-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: end;
  gap: 32px;
  margin-bottom: 42px;
}

.loong-support-heading span {
  padding-bottom: 8px;
  color: var(--support-accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.loong-support-heading h2 {
  margin: 0;
  color: var(--support-ink);
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: 0;
}

.loong-support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--support-line);
  border-left: 1px solid var(--support-line);
  background: #fff;
}

.loong-support-card {
  position: relative;
  min-height: 310px;
  padding: 38px 34px;
  border-right: 1px solid var(--support-line);
  border-bottom: 1px solid var(--support-line);
  background: #fff;
  transition: background-color 180ms ease, transform 180ms ease;
}

.loong-support-card:hover {
  z-index: 1;
  background: #f9fbff;
  transform: translateY(-3px);
}

.loong-support-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 34px;
  border-radius: 8px;
  background: #eaf1ff;
  color: var(--support-primary);
  font-size: 25px;
}

.loong-support-number {
  position: absolute;
  top: 42px;
  right: 34px;
  color: #c5cfdd;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.loong-support-card h3 {
  margin: 0 0 14px;
  color: var(--support-ink);
  font-size: 22px;
  line-height: 1.3;
}

.loong-support-card p {
  margin: 0;
  color: var(--support-muted);
  font-size: 15px;
  line-height: 1.72;
}

.loong-support-note {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-top: 28px;
  padding: 22px 24px;
  border-left: 3px solid var(--support-accent);
  background: #eaf1fb;
}

.loong-support-note i {
  flex: 0 0 auto;
  color: var(--support-primary);
  font-size: 22px;
}

.loong-support-note p {
  margin: 0;
  color: #435064;
  font-size: 14px;
  line-height: 1.65;
}

@media (max-width: 900px) {
  .loong-support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .loong-support-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 600px) {
  .loong-support-shell {
    width: min(100% - 32px, 1240px);
  }

  .loong-support-hero {
    padding: 58px 0 54px;
  }

  .loong-support-hero h1 {
    font-size: 36px;
  }

  .loong-support-hero p {
    margin-top: 20px;
    font-size: 16px;
  }

  .loong-support-section {
    padding: 56px 0 68px;
  }

  .loong-support-grid {
    grid-template-columns: 1fr;
  }

  .loong-support-card {
    min-height: 0;
    padding: 30px 26px;
  }

  .loong-support-number {
    top: 34px;
    right: 26px;
  }
}