Back to CSS Split Screen Curved Split Pure CSS
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.ss-srf {
  display: grid; grid-template-columns: 45% 55%;
  min-height: 480px;
  font-family: 'Inter', system-ui, sans-serif;
  background: #f5ecd9;
  color: #1a3a3f;
  border-radius: 0; overflow: hidden;
  position: relative;
}
.ss-srf-ocean {
  position: relative;
  background: linear-gradient(180deg, #2c8a8e 0%, #1a3a3f 100%);
  overflow: hidden;
  isolation: isolate;
}
.ss-srf-ocean::after {
  content: '';
  position: absolute; right: -120px; top: 0; bottom: 0; width: 240px;
  background: #f5ecd9;
  border-radius: 50% 0 0 50% / 50% 0 0 50%;
  z-index: 2;
}
.ss-srf-sun {
  position: absolute; top: 14%; left: 22%;
  width: 90px; height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffe899 0%, #ff8a40 60%, #c45a1c 100%);
  box-shadow: 0 0 60px rgba(255,170,68,0.5);
}
.ss-srf-wave {
  position: absolute; bottom: 18%; left: -10%; right: -20%;
  height: 80px;
  background:
    radial-gradient(ellipse at 30% 100%, rgba(255,255,255,0.45), transparent 60%),
    radial-gradient(ellipse at 70% 100%, rgba(255,255,255,0.35), transparent 60%);
  border-radius: 50%;
  filter: blur(2px);
}
.ss-srf-wave::before {
  content: ''; position: absolute; left: 0; right: 0; bottom: -10px; height: 24px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  filter: blur(6px);
}
.ss-srf-board {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(28deg);
  width: 56px; height: 240px;
  border-radius: 28px / 90px;
  background: linear-gradient(180deg, #fff 0%, #ffe9c4 50%, #ff8a40 100%);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 3;
}
.ss-srf-board::before {
  content: ''; position: absolute; left: 50%; top: 12%;
  transform: translateX(-50%);
  width: 2px; height: 76%;
  background: rgba(0,0,0,0.18);
}
.ss-srf-content {
  padding: 44px 48px 44px 36px;
  display: flex; flex-direction: column; gap: 22px;
  position: relative;
  z-index: 1;
}
.ss-srf-eye {
  font-family: 'Inter', sans-serif;
  font-size: 11px; font-weight: 800;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: #c45a1c;
}
.ss-srf-content h2 {
  margin: 4px 0 0;
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 500;
  line-height: 0.95;
  color: #1a3a3f;
  letter-spacing: -0.02em;
}
.ss-srf-content h2 em {
  font-style: italic;
  color: #c45a1c;
}
.ss-srf-content p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: #3a5a5f;
  max-width: 460px;
}
.ss-srf-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; max-width: 420px; padding: 14px 0; border-top: 1px solid #c8b896; border-bottom: 1px solid #c8b896; }
.ss-srf-stat { display: flex; flex-direction: column; gap: 4px; }
.ss-srf-stats strong {
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px; font-weight: 500;
  color: #2c8a8e;
  letter-spacing: -0.02em;
  font-style: italic;
}
.ss-srf-stats span {
  font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.16em;
  color: #6a4a35;
  text-transform: uppercase;
}
.ss-srf-cta {
  align-self: flex-start;
  padding: 14px 24px;
  background: #c45a1c;
  color: #fff;
  border: 0;
  border-radius: 28px;
  font-family: 'Inter', sans-serif;
  font-size: 13px; font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(196,90,28,0.35);
  transition: transform 0.12s, box-shadow 0.12s;
}
.ss-srf-cta:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(196,90,28,0.45); }
@media (max-width: 720px) {
  .ss-srf { grid-template-columns: 1fr; }
  .ss-srf-ocean { min-height: 280px; }
  .ss-srf-ocean::after { display: none; }
  .ss-srf-stats { grid-template-columns: 1fr; }
}
<section class="ss-srf" aria-label="Surfboard hero">
  <aside class="ss-srf-ocean" aria-hidden="true">
    <span class="ss-srf-sun"></span>
    <span class="ss-srf-wave"></span>
    <span class="ss-srf-board"></span>
  </aside>
  <article class="ss-srf-content">
    <span class="ss-srf-eye">▴ Drift Surf Co.</span>
    <h2>Hand-shaped<br/>by the <em>tide.</em></h2>
    <p>Custom polyurethane boards, glassed in our Ericeira workshop. 6-week lead time, lifetime workmanship guarantee.</p>
    <div class="ss-srf-stats">
      <div class="ss-srf-stat"><strong>14</strong><span>Shapers</span></div>
      <div class="ss-srf-stat"><strong>2,400</strong><span>Boards / yr</span></div>
      <div class="ss-srf-stat"><strong>1972</strong><span>Founded</span></div>
    </div>
    <button type="button" class="ss-srf-cta">Shape your board →</button>
  </article>
</section>
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