:root {
    --bg: #0d0c10;
    --bg2: #13111a;
    --cream: #f0ead8;
    --muted: #7a7490;
    --red670: oklch(0.60 0.20 25);
    --red670-glow: oklch(0.60 0.20 25 / 0.12);
    --amber: oklch(0.72 0.14 65);
    --amber-glow: oklch(0.72 0.14 65 / 0.15);
    --blue: oklch(0.60 0.20 260);
    --blue-glow: oklch(0.60 0.20 260 / 0.10);
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    background: var(--bg); color: var(--cream);
    /*
    font-family: 'DM Sans', sans-serif; font-weight: 300;
    line-height: 1.75; 
*/
    overflow-x: hidden;
  }

  h1, h2, h3, h4 { color: var(--cream); }

  .hero {
    min-height: 100vh; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center; padding: 80px 24px; padding: 0 24px 80px; 
    position: relative; overflow: hidden;
  }
  .hero-bg {
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 80% 60% at 50% 100%, oklch(0.32 0.18 25 / 0.32) 0%, transparent 70%),
      radial-gradient(ellipse 50% 40% at 50% 50%, oklch(0.20 0.10 25 / 0.14) 0%, transparent 60%);
  }
  .stars { position: absolute; inset: 0; pointer-events: none; }
  .star {
    position: absolute; background: white; border-radius: 50%;
    animation: twinkle var(--d,3s) ease-in-out infinite var(--delay,0s);
  }
  @keyframes twinkle { 0%,100%{opacity:var(--min-op,.2)} 50%{opacity:var(--max-op,.9)} }

  .eyebrow {
    font-size: 11px; font-weight: 500; letter-spacing: 0.25em;
    text-transform: uppercase; color: var(--red670); margin-bottom: 28px; position: relative;
  }
  .hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.6rem, 7.5vw, 6rem); font-weight: 900;
    line-height: 1.0; letter-spacing: -0.02em; max-width: 860px; position: relative;
  }
  .hero h1 em { font-style: italic; color: var(--red670); }
  .hero-sub {
    margin-top: 28px; font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--muted); max-width: 520px; position: relative;
  }

  .container      { max-width: 720px;  margin: 0 auto; padding: 0 32px; }
  .wide-container { max-width: 1100px; margin: 0 auto; padding: 0 32px; overflow-x: hidden; }

  section { padding: 100px 0; }
  section + section { border-top: 1px solid oklch(1 0 0 / 0.06); }

  h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 700;
    line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 32px;
  }
  h2 em { font-style: italic; color: var(--red670); }
  h3 { font-family: 'Playfair Display', serif; font-size: 1.3rem; font-weight: 700; margin-bottom: 10px; margin-top: 36px; }

  p { margin-bottom: 20px; font-size: 1.05rem; color: oklch(0.88 0.01 80); }
  strong { font-weight: 500; color: var(--cream); }

  .pull-quote {
    border-left: 3px solid var(--red670); padding: 24px 32px; margin: 48px 0;
    background: var(--red670-glow); border-radius: 0 8px 8px 0;
  }
  .pull-quote p {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-style: italic; color: var(--cream); margin: 0; line-height: 1.5;
  }

  /* mechanism chain */
  .chain-wrap {
    background: var(--bg2); border: 1px solid oklch(1 0 0 / 0.08);
    border-radius: 16px; padding: 48px; margin: 56px 0;
  }
  .chain-lbl {
    font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase;
    color: var(--red670); font-weight: 500; margin-bottom: 36px;
  }
  .chain-steps { display: flex; flex-direction: column; gap: 0; }
  .chain-step {
    display: grid; grid-template-columns: 56px 1fr;
    gap: 20px; padding: 22px 0;
    border-bottom: 1px solid oklch(1 0 0 / 0.05); align-items: start;
  }
  .chain-step:last-child { border-bottom: none; }
  .chain-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: var(--red670-glow); border: 1px solid oklch(0.60 0.20 25 / 0.3);
    flex-shrink: 0;
  }
  .chain-step h4 { font-family: 'Playfair Display', serif; font-size: 1.05rem; font-weight: 700; margin-bottom: 5px; }
  .chain-step h4 span { color: var(--red670); }
  .chain-step p { font-size: 0.9rem; margin: 0; color: oklch(0.80 0.01 80); }
  .chain-arrow { text-align: center; color: var(--red670); opacity: 0.3; font-size: 1rem; padding: 2px 0; }

  /* big stat -->  */
  .stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 56px 0; }
  .stat-card {
    background: var(--bg2); border: 1px solid oklch(1 0 0 / 0.08);
    border-radius: 16px; padding: 32px 24px; text-align: center;
  }
  .stat-card .num {
    font-family: 'Playfair Display', serif; font-size: 3rem;
    font-weight: 900; line-height: 1; margin-bottom: 8px; color: var(--red670);
  }
  .stat-card .lbl { font-size: 0.85rem; color: var(--muted); line-height: 1.5; }
  .stat-card .lbl strong { color: var(--cream); display: block; font-size: 0.9rem; margin-bottom: 4px; }

  /* wavelength spectrum bar -->  */
  .spec-wrap {
    background: var(--bg2); border: 1px solid oklch(1 0 0 / 0.08);
    border-radius: 16px; padding: 48px; margin: 56px 0;
  }
  .spec-lbl {
    font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase;
    color: var(--red670); font-weight: 500; margin-bottom: 36px;
  }
  .svg-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 8px; }

  /* compare block -->  */
  .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; border-radius: 16px; overflow: hidden; margin: 56px 0; }
  .compare-side { padding: 44px 36px; }
  .compare-side.missing { background: oklch(0.17 0.06 260); }
  .compare-side.present { background: oklch(0.17 0.06 25); }
  .compare-lbl { font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; font-weight: 500; margin-bottom: 18px; }
  .compare-side.missing .compare-lbl { color: var(--blue); }
  .compare-side.present .compare-lbl { color: var(--red670); }
  .compare-item {
    font-family: 'Playfair Display', serif; font-size: 1rem; font-style: italic;
    padding: 9px 0; border-bottom: 1px solid oklch(1 0 0 / 0.06);
  }
  .compare-item:last-child { border-bottom: none; }
  .compare-side.missing .compare-item { color: oklch(0.68 0.12 260); }
  .compare-side.present .compare-item { color: oklch(0.72 0.14 35); }

  /* steps -->  */
  .steps { display: flex; flex-direction: column; margin: 48px 0; }
  .step { display: grid; grid-template-columns: 72px 1fr; gap: 24px; align-items: start; padding: 32px 0; border-bottom: 1px solid oklch(1 0 0 / 0.06); }
  .step:last-child { border-bottom: none; }
  .step-num { font-family: 'Playfair Display', serif; font-size: 3rem; font-weight: 900; color: var(--red670); line-height: 1; opacity: 0.5; }
  .step h3  { margin-top: 0; font-size: 1.15rem; }
  .step p   { margin-bottom: 0; font-size: 0.95rem; }

  /* product callout -->  */
  .product-box {
    background: var(--bg2);
    border: 1px solid oklch(0.60 0.20 25 / 0.3);
    border-radius: 16px; padding: 48px; margin: 56px 0;
    position: relative; overflow: hidden;
  }
  .product-box::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--red670), oklch(0.60 0.20 25 / 0));
  }
  .product-tag { font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--red670); font-weight: 500; margin-bottom: 16px; }

  /* references -->  */
  .references {
    background: var(--bg2); border: 1px solid oklch(1 0 0 / 0.07);
    border-radius: 16px; padding: 40px 48px; margin-top: 32px;
  }
  .ref-title { font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--red670); font-weight: 500; margin-bottom: 24px; }
  .ref-item { padding: 14px 0; border-bottom: 1px solid oklch(1 0 0 / 0.05); font-size: 0.9rem; color: var(--muted); line-height: 1.6; }
  .ref-item:last-child { border-bottom: none; }
  .ref-item strong { color: oklch(0.72 0.05 80); font-weight: 500; }

  .closing { text-align: center; padding: 140px 32px; position: relative; overflow: hidden; }
  .closing-bg { position: absolute; inset: 0; background: radial-gradient(ellipse 70% 80% at 50% 50%, oklch(0.28 0.14 25 / 0.15) 0%, transparent 70%); }
  .closing h2 { font-size: clamp(2.5rem, 6vw, 5rem); max-width: 700px; margin: 0 auto 32px; }
  .closing p  { max-width: 480px; margin: 0 auto; font-size: 1.1rem; color: var(--muted); }

  footer { text-align: center; padding: 40px 32px; font-size: 12px; color: oklch(0.45 0 0); border-top: 1px solid oklch(1 0 0 / 0.06); }
  footer a { color: var(--amber); text-decoration: none; }

/*
  .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.visible { opacity: 1; transform: none; }
  */

  /* ── MOBILE ── */
  @media (max-width: 640px) {
    body { overflow-x: hidden; }
    /*
    .container      { padding: 0 16px !important; }
    .wide-container { padding: 0 12px !important; }
*/
    .container      { padding: 0 0 !important; }
    .wide-container { padding: 0 0 !important; }
	

    section { padding: 64px 0; }
    .stat-row { grid-template-columns: 1fr !important; }
    .compare  { display: block !important; }
    .compare-side { padding: 28px 18px !important; }
    .chain-wrap, .spec-wrap, .product-box, .references { padding: 24px 18px !important; }
    .chain-step { grid-template-columns: 1fr !important; }
    .chain-icon { display: none; }
    .step { grid-template-columns: 42px 1fr !important; gap: 12px !important; }
    .step-num { font-size: 2rem !important; }
    .closing { padding: 80px 16px !important; }
    .closing h2 { font-size: clamp(2rem, 9vw, 3.2rem) !important; }
    footer { padding: 24px 16px; }
  }