<section class="sdgc-portfolio">
  <div class="sdgc-overlay"></div>

  <div class="sdgc-container">
    <p class="sdgc-kicker">Star Diamond Conglomerate</p>
    <h2>Our Companies</h2>
    <p class="sdgc-intro">
      A diversified portfolio across technology, finance, media, lifestyle,
      infrastructure, wellness, and innovation.
    </p>

    <div class="sdgc-grid">

      <div class="glass-card">
        <h3>Technology & Innovation</h3>
        <p>Celestech Solutions, MadWolf Next Gen Technologies, IronHalo, Electron Nest, SkyLedger Telecommunications.</p>
      </div>

      <div class="glass-card">
        <h3>Financial & Insurance Services</h3>
        <p>SecureAxis Financial, Quantum Pay, and Quantum Shield Insurance Agency.</p>
      </div>

      <div class="glass-card">
        <h3>Media, Entertainment & Publishing</h3>
        <p>Starbright Diamond Studios Co, Sonic Boom Entertainment, and Star Diamond Novels.</p>
      </div>

      <div class="glass-card">
        <h3>Fashion & Retail</h3>
        <p>Diamonds & Moonstones Bridal Couture and MadWolf Apparel.</p>
      </div>

      <div class="glass-card">
        <h3>Home, Living & Outdoor</h3>
        <p>Crimson Moon Furniture Co, Blissstone Patios & Outdoor Living, and Everbloom Garden.</p>
      </div>

      <div class="glass-card">
        <h3>Automotive & Mobility</h3>
        <p>Roadrunner Automotive and NeonApex Luxury Mobility.</p>
      </div>

      <div class="glass-card">
        <h3>Real Estate, Construction & Engineering</h3>
        <p>Star Diamond Realty, Skyforge Construction, and Skyforge Engineering.</p>
      </div>

      <div class="glass-card">
        <h3>Hospitality, Wellness & Lifestyle</h3>
        <p>Mystic Moon Treasures, Velocity Vibes, Celestial Waters Spa & Moon Resort, Le Lune Lux Beauty Spa, and Soft & Furry Embrace Doggie Spa & Resort.</p>
      </div>

      <div class="glass-card">
        <h3>Health & Counseling</h3>
        <p>Moonveil Counseling Center.</p>
      </div>

      <div class="glass-card">
        <h3>Creative & Business Services</h3>
        <p>Star Diamond Graphics Co and Equinox Equations Inc.</p>
      </div>

      <div class="glass-card">
        <h3>Specialty & Craft</h3>
        <p>ElecForge Instruments.</p>
      </div>

      <div class="glass-card">
        <h3>Flagship Development Project</h3>
        <p>The Wonderland Project.</p>
      </div>

    </div>
  </div>
</section>

<style>
.sdgc-portfolio {
  position: relative;
  padding: 90px 20px;
  background:
    radial-gradient(circle at top left, rgba(173, 92, 255, 0.35), transparent 35%),
    radial-gradient(circle at bottom right, rgba(255, 205, 90, 0.22), transparent 35%),
    linear-gradient(135deg, #08020f, #120421 45%, #05050a);
  overflow: hidden;
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
}

.sdgc-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.35;
}

.sdgc-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 2;
  text-align: center;
}

.sdgc-kicker {
  color: #f5d58b;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 10px;
}

.sdgc-container h2 {
  font-size: clamp(34px, 5vw, 64px);
  margin: 0;
  background: linear-gradient(90deg, #ffffff, #d8b4ff, #ffd778);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 35px rgba(186, 104, 255, 0.45);
}

.sdgc-intro {
  max-width: 760px;
  margin: 18px auto 45px;
  color: rgba(255,255,255,0.78);
  font-size: 17px;
  line-height: 1.7;
}

.sdgc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.glass-card {
  position: relative;
  padding: 28px;
  min-height: 210px;
  text-align: left;
  border-radius: 24px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.22);
  box-shadow:
    0 20px 45px rgba(0,0,0,0.45),
    inset 0 1px 0 rgba(255,255,255,0.25),
    0 0 35px rgba(172, 89, 255, 0.18);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  overflow: hidden;
  transition: all 0.35s ease;
}

.glass-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, rgba(255,215,128,0.55), rgba(177,92,255,0.6), rgba(255,255,255,0.15));
  opacity: 0;
  z-index: -1;
  transition: opacity 0.35s ease;
}

.glass-card::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(255,215,128,0.35), transparent 65%);
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255,215,128,0.65);
  box-shadow:
    0 28px 70px rgba(0,0,0,0.6),
    0 0 45px rgba(190, 102, 255, 0.45),
    0 0 30px rgba(255, 215, 128, 0.25);
}

.glass-card:hover::before {
  opacity: 1;
}

.glass-card h3 {
  margin: 0 0 14px;
  color: #ffe3a3;
  font-size: 21px;
  line-height: 1.25;
}

.glass-card p {
  margin: 0;
  color: rgba(255,255,255,0.78);
  font-size: 15px;
  line-height: 1.65;
}

@media (max-width: 980px) {
  .sdgc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .sdgc-portfolio {
    padding: 65px 16px;
  }

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

  .glass-card {
    min-height: auto;
  }
}
</style>
.sd-hero {
  position: relative;
  min-height: 620px;
  width: 100%;
  background-image: url("YOUR-BANNER-IMAGE-URL-HERE");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.sd-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(9, 3, 24, 0.85), rgba(65, 17, 94, 0.55)),
    radial-gradient(circle at center, rgba(202, 158, 255, 0.18), transparent 55%);
  z-index: 1;
}

.sd-hero-content {
  position: relative;
  z-index: 2;
  max-width: 950px;
  padding: 40px 22px;
  text-align: center;
  color: #ffffff;
}

.sd-kicker {
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #d9b86c;
  margin-bottom: 18px;
}

.sd-hero h1 {
  font-size: clamp(42px, 7vw, 86px);
  line-height: 1.05;
  margin: 0 0 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  text-shadow: 0 0 18px rgba(182, 111, 255, 0.75);
}

.sd-subtitle {
  font-size: clamp(18px, 2.4vw, 27px);
  line-height: 1.55;
  margin: 0 auto 22px;
  max-width: 850px;
  color: #f2edf8;
}

.sd-tagline {
  font-size: clamp(20px, 3vw, 34px);
  font-weight: 700;
  color: #f3d27c;
  margin: 24px 0 34px;
  text-shadow: 0 0 14px rgba(243, 210, 124, 0.45);
}

.sd-btn {
  display: inline-block;
  padding: 15px 34px;
  border: 1px solid #f3d27c;
  border-radius: 999px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 22px rgba(151, 80, 255, 0.45);
}

.sd-btn:hover {
  background: #f3d27c;
  color: #170824;
}

@media (max-width: 768px) {
  .sd-hero {
    min-height: 520px;
  }

  .sd-kicker {
    letter-spacing: 2px;
  }
}
<section class="sd-hero">
  <div class="sd-overlay"></div>

  <div class="sd-hero-content">
    <p class="sd-kicker">Innovation • Integrity • Excellence • Legacy</p>
    <h1>Star Diamond Conglomerate</h1>
    <p class="sd-subtitle">
      A multi-industry powerhouse driving innovation across technology, media,
      design, lifestyle, finance, and smart business solutions.
    </p>
    <p class="sd-tagline">Building Empires. Defining the Future.</p>
    <a href="#companies" class="sd-btn">Explore Our Companies</a>
  </div>
</section>
YOUR-BANNER-IMAGE-URL-HERE