/* ── HERO ───────────────────────────────── */
  .sol-hero {
    padding: calc(var(--nav-h, 80px) + 96px) var(--gutter) 100px;
    background: var(--ink);
    color: var(--paper);
    position: relative;
    overflow: hidden;
  }
  .sol-hero::before {
    content: '';
    position: absolute;
    top: -160px; right: -200px;
    width: 700px; height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(132,212,154,0.13) 0%, transparent 65%);
    pointer-events: none;
  }

  /* ── 5 PHRASES ──────────────────────────── */
  .phrases-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 48px;
    counter-reset: phrase;
  }
  .phrase-item {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 28px;
    padding: 28px 0;
    border-top: 1px solid var(--line);
    align-items: baseline;
    counter-increment: phrase;
  }
  .phrase-item:last-child { border-bottom: 1px solid var(--line); }
  .phrase-item::before {
    content: "0" counter(phrase);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--muted);
    padding-top: 3px;
  }
  .phrase-item p { font-size: 16px; line-height: 1.65; color: var(--ink); margin: 0; }

  /* ── ARCHITECTURE ───────────────────────── */
  .brique-block {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 48px;
    padding: 56px 0;
    border-top: 1px solid var(--line);
    align-items: start;
  }
  .brique-block:last-child { border-bottom: 1px solid var(--line); }
  .brique-block .num {
    font-size: clamp(52px, 6vw, 80px);
    font-weight: 200;
    letter-spacing: -0.05em;
    color: var(--algae);
    line-height: 1;
  }
  .brique-block h3 { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; margin-bottom: 16px; }
  .brique-block p { font-size: 15px; color: var(--muted); line-height: 1.7; max-width: 64ch; }
  .brique-block .links { display: flex; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
  .brique-block .links a {
    font-size: 13px;
    font-weight: 500;
    color: var(--leaf);
    text-decoration: none;
    letter-spacing: 0.01em;
  }
  .brique-block .links a:hover { text-decoration: underline; }

  /* ── MODULE 4 EFFETS ────────────────────── */
  .effets-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-top: 56px;
  }
  .effet-card {
    background: var(--paper);
    padding: 40px 36px;
  }
  .effet-card .label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--leaf);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .effet-card .label::before {
    content: '';
    display: block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--algae);
  }
  .effet-card h3 { font-size: 19px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 12px; }
  .effet-card p { font-size: 14px; color: var(--muted); line-height: 1.65; margin: 0; }

  /* ── DÉROULÉ ────────────────────────────── */
  .deroul-list {
    display: flex;
    flex-direction: column;
    counter-reset: step;
    margin-top: 48px;
  }
  .deroul-item {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 32px;
    padding: 32px 0;
    border-top: 1px solid var(--line);
    align-items: start;
    counter-increment: step;
  }
  .deroul-item:last-child { border-bottom: 1px solid var(--line); }
  .deroul-item::before {
    content: "0" counter(step);
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--algae);
    padding-top: 3px;
  }
  .deroul-item h3 { font-size: 18px; font-weight: 500; margin-bottom: 8px; letter-spacing: -0.01em; }
  .deroul-item p { font-size: 15px; color: var(--muted); line-height: 1.65; max-width: 62ch; margin: 0; }

  /* ── POUR QUI ───────────────────────────── */
  .pourqui-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
  }
  .pourqui-card {
    padding: 36px 32px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
  }
  .pourqui-card .type {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--leaf);
    margin-bottom: 16px;
  }
  .pourqui-card h3 { font-size: 17px; font-weight: 500; margin-bottom: 12px; letter-spacing: -0.01em; }
  .pourqui-card p { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 0; }

  /* ── FAQ ────────────────────────────────── */
  .sol-faq { margin-top: 48px; }
  .sol-faq details {
    border-top: 1px solid var(--line);
  }
  .sol-faq details:last-child { border-bottom: 1px solid var(--line); }
  .sol-faq summary {
    display: flex;
    align-items: baseline;
    gap: 24px;
    padding: 24px 0;
    cursor: pointer;
    list-style: none;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--ink);
  }
  .sol-faq summary::-webkit-details-marker { display: none; }
  .sol-faq summary .q-num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--muted);
    flex-shrink: 0;
    padding-top: 3px;
  }
  .sol-faq summary .q-text { flex: 1; }
  .sol-faq summary .q-icon {
    width: 20px; height: 20px;
    border: 1px solid var(--line);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 200ms;
    font-size: 14px;
    color: var(--muted);
  }
  .sol-faq details[open] summary .q-icon { transform: rotate(45deg); }
  .sol-faq .faq-body {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 24px;
    padding-bottom: 28px;
  }
  .sol-faq .faq-body p {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.7;
    margin: 0;
    max-width: 68ch;
  }

  /* ── CHLORELLE ──────────────────────────── */
  .chlorelle {
    background: var(--ink);
    color: var(--paper);
    padding: clamp(56px, 7vw, 88px) var(--gutter);
    position: relative;
    overflow: hidden;
  }
  .chlorelle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 80%, rgba(132,212,154,0.12), transparent 55%);
    pointer-events: none;
  }
  .chlorelle-inner {
    max-width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
    position: relative;
  }
  .chlorelle-inner h2 {
    font-size: clamp(22px, 2.6vw, 38px);
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.15;
    color: var(--paper);
    margin-top: 20px;
  }
  .chlorelle-inner p { font-size: 15px; line-height: 1.75; color: rgba(255,255,255,0.7); margin-bottom: 20px; }
  .chlorelle-inner p:last-child {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    margin-top: 8px;
  }

  @media (max-width: 880px) {
    .effets-grid { grid-template-columns: 1fr; }
    .pourqui-grid { grid-template-columns: 1fr; }
    .chlorelle-inner { grid-template-columns: 1fr; gap: 32px; }
    .brique-block { grid-template-columns: 56px 1fr; gap: 24px; }
    .brique-block .num { font-size: 40px; }
  }