/* ============================================================
   TPU-BIO PAGE — tpu-bio.css
   ============================================================ */

/* HERO */
.tpu-hero {
    position: relative; min-height: 75vh;
    display: flex; align-items: flex-end; overflow: hidden;
  }
  .tpu-hero-img-wrap { position: absolute; inset: 0; }
  .tpu-hero-img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center 60%;
  }
  .tpu-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(
      105deg,
      rgba(5,15,5,0.80) 0%,
      rgba(5,15,5,0.50) 50%,
      rgba(5,15,5,0.10) 100%
    );
  }
  .tpu-hero-content {
    position: relative; z-index: 2;
    padding-bottom: 5rem; padding-top: 3rem;
  }
  .tpu-hero-text { max-width: 580px; }
  .tpu-hero-h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 500; color: var(--white);
    line-height: 1.12; letter-spacing: -0.5px;
    margin-bottom: 1rem;
  }
  .tpu-hero-h1 em { color: var(--green-100); font-style: normal; }
  .tpu-hero-sub {
    font-size: 17px; color: rgba(255,255,255,0.78);
    line-height: 1.6;
  }
  
  /* INTRO */
  .tpu-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem; align-items: center;
  }
  .tpu-intro-desc {
    font-size: 16px; color: var(--gray-800);
    line-height: 1.75; margin-bottom: 1rem;
  }
  .tpu-badges {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-top: 1.5rem;
  }
  .tpu-badge {
    font-size: 12px; font-weight: 500;
    background: var(--green-50);
    border: 0.5px solid var(--green-100);
    color: var(--green-800);
    padding: 5px 13px; border-radius: var(--radius-pill);
  }
  
  /* THREE-IMAGE STACK */
  .tpu-intro-right { display: flex; flex-direction: column; }
  .tpu-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  .tpu-stack-boot {
    width: 80%;
    max-width: 360px;
    object-fit: contain;
    mix-blend-mode: multiply;
  }
  .tpu-stack-outsole {
    width: 85%;
    max-width: 380px;
    object-fit: contain;
    mix-blend-mode: multiply;
  }
  .tpu-stack-details {
    width: 100%;
    max-width: 420px;
    object-fit: contain;
    mix-blend-mode: multiply;
  }
  
  /* OUTSOLE VARIANTS */
  
  .tpu-outsoles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .tpu-outsole-card {
    background: var(--white);
    border: 0.5px solid var(--gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: transform 0.25s, box-shadow 0.25s;
  }
  .tpu-outsole-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
  .tpu-outsole-img-wrap {
    background: var(--off-white);
    height: 260px;
    display: flex; align-items: center; justify-content: center;
    padding: 2rem; overflow: hidden;
  }
  .tpu-outsole-img {
    width: 100%; height: 100%;
    object-fit: contain; mix-blend-mode: multiply;
  }
  .tpu-outsole-body { padding: 1.75rem; }
  .tpu-outsole-title {
    font-size: 18px; font-weight: 500;
    color: var(--near-black); margin-bottom: 0.6rem;
  }
  .tpu-outsole-desc {
    font-size: 14px; color: var(--gray-800);
    line-height: 1.65; margin-bottom: 1.25rem;
  }
  .tpu-outsole-specs {
    display: flex; flex-direction: column; gap: 6px;
  }
  .tpu-outsole-specs li {
    font-size: 13px; color: var(--gray-800);
    display: flex; align-items: center; gap: 8px;
  }
  .tpu-outsole-specs li::before {
    content: ''; width: 5px; height: 5px;
    border-radius: 50%; background: var(--green-600); flex-shrink: 0;
  }
  
  /* WHY BIO TPU */
  .tpu-why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem; align-items: start;
  }
  .tpu-why-sub {
    font-size: 16px; color: rgba(255,255,255,0.72);
    line-height: 1.7; margin-top: 1rem;
  }
  .tpu-why-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem; padding-top: 0.5rem;
  }
  .tpu-why-feat {
    background: rgba(255,255,255,0.06);
    border: 0.5px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
  }
  .tpu-why-feat-title {
    font-size: 14px; font-weight: 500;
    color: var(--green-100); margin-bottom: 6px;
  }
  .tpu-why-feat-desc {
    font-size: 13px; color: rgba(255,255,255,0.62);
    line-height: 1.6;
  }
  
  /* RESPONSIVE */
  @media (max-width: 1024px) {
    .tpu-intro-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .tpu-why-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  }
  @media (max-width: 768px) {
    .tpu-outsoles-grid { grid-template-columns: 1fr; }
    .tpu-why-features { grid-template-columns: 1fr; }
    .tpu-hero { min-height: 60vh; }
    .tpu-boot-wrap { min-height: 360px; }
  }
  
  /* WHY BIO TPU — dark background */
  .tpu-why-dark {
    background: var(--near-black);
  }