:root {
    --color-deep:   #0B3D4C;
    --color-water:  #1C7293;
    --color-aqua:   #4FB8C9;
    --color-coral:  #FF6F59;
    --color-sun:    #FFB833;
    --color-foam:   #F5FAFA;
    --color-mist:   #DCEEF2;
    --color-ink:    #0D2530;
    --color-ink-60: #4C6A73;

    --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

    --radius-m: 14px;
    --radius-l: 22px;
    --shadow-card: 0 1px 2px rgba(11,61,76,0.06), 0 12px 32px -12px rgba(11,61,76,0.18);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0; font-family: var(--font-body); color: var(--color-ink); background: var(--color-foam);
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3 { font-family: var(--font-display); color: var(--color-deep); margin: 0; line-height: 1.08; letter-spacing: -0.01em; }
  p { margin: 0; line-height: 1.6; }
  a { color: inherit; }
  img, svg { display: block; max-width: 100%; }
  :focus-visible { outline: 3px solid var(--color-coral); outline-offset: 3px; }

  .wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
  @media (max-width: 640px) { .wrap { padding: 0 20px; } }

  /* ---------- Nav ---------- */
  .nav {
    position: sticky; top: 0; z-index: 50; background: rgba(245,250,250,0.88); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-mist);
  }
  .nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
  .marchio { display: flex; align-items: center; gap: 10px; text-decoration: none; }
  .marchio .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--color-coral); flex-shrink: 0; }
  .marchio span { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; color: var(--color-deep); }
  .nav-links { display: flex; align-items: center; gap: 32px; }
  .nav-links a { text-decoration: none; font-size: 0.92rem; font-weight: 600; color: var(--color-ink-60); }
  .nav-links a:hover { color: var(--color-water); }
  .nav-cta {
    background: var(--color-deep); color: white !important; padding: 11px 22px; border-radius: 999px;
    font-size: 0.88rem; font-weight: 600; text-decoration: none; transition: background 0.15s, transform 0.15s;
  }
  .nav-cta:hover { background: var(--color-water); transform: translateY(-1px); }
  @media (max-width: 780px) { .nav-links a:not(.nav-cta) { display: none; } }

  /* ---------- Lane divider (il motivo firma: corsie vere, con le boe) ---------- */
  .lane-divider { position: relative; height: 34px; overflow: hidden; display: flex; align-items: center; }
  .lane-divider::before, .lane-divider::after {
    content: ""; position: absolute; top: 50%; left: 0; right: 0; height: 2px; transform: translateY(-50%);
    background: repeating-linear-gradient(90deg, currentColor 0 16px, transparent 16px 30px);
    color: var(--color-mist);
  }
  .lane-divider.scuro::before, .lane-divider.scuro::after { color: rgba(255,255,255,0.18); }
  .lane-divider .buoy-row {
    position: relative; display: flex; gap: 14px; margin: 0 auto; animation: galleggia 3.4s ease-in-out infinite;
  }
  .lane-divider .buoy { width: 9px; height: 9px; border-radius: 50%; background: var(--color-coral); flex-shrink: 0; }
  .lane-divider .buoy:nth-child(3n+2) { background: var(--color-sun); }
  .lane-divider .buoy:nth-child(3n) { background: var(--color-aqua); }
  @keyframes galleggia { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
  @media (prefers-reduced-motion: reduce) { .lane-divider .buoy-row { animation: none; } }

  /* ---------- Hero ---------- */
  .hero {
    position: relative; background: linear-gradient(175deg, var(--color-deep) 0%, var(--color-water) 78%, var(--color-aqua) 130%);
    color: white; overflow: hidden; padding: 96px 0 0;
  }
  .hero-corsie { position: absolute; inset: 0; opacity: 0.5; }
  .corsia-traccia {
    position: absolute; left: -10%; right: -10%; height: 3px;
    background: repeating-linear-gradient(90deg, rgba(255,255,255,0.55) 0 22px, transparent 22px 46px);
    animation: nuota 16s linear infinite;
  }
  .corsia-traccia.inversa { animation-direction: reverse; }
  @keyframes nuota { from { transform: translateX(0); } to { transform: translateX(-68px); } }
  @media (prefers-reduced-motion: reduce) { .corsia-traccia { animation: none; } }

  .hero-inner { position: relative; z-index: 2; padding-bottom: 90px; }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 0.78rem;
    letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-sun); margin-bottom: 22px;
  }
  .eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--color-sun); }
  .hero h1 { color: white; font-size: clamp(2.4rem, 5.2vw, 4rem); max-width: 800px; margin-bottom: 22px; }
  .hero h1 em { font-style: normal; color: var(--color-sun); }
  .hero .lead { color: rgba(255,255,255,0.82); font-size: 1.15rem; max-width: 560px; margin-bottom: 36px; }
  .hero-azioni { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }
  .btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 15px 28px; border-radius: 999px;
    font-size: 0.98rem; font-weight: 700; text-decoration: none; transition: transform 0.15s, box-shadow 0.15s; border: none; cursor: pointer;
  }
  .btn-chiaro { background: white; color: var(--color-deep); }
  .btn-chiaro:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -10px rgba(0,0,0,0.35); }
  .btn-contorno { background: transparent; color: white; border: 1.5px solid rgba(255,255,255,0.4); }
  .btn-contorno:hover { border-color: white; background: rgba(255,255,255,0.08); }

  /* La vasca del hero: sei corsie vere, ciascuna con un pezzo del prodotto che vi "nuota" dentro */
  .vasca-hero {
    position: relative; z-index: 2; background: rgba(11,61,76,0.35); border: 1px solid rgba(255,255,255,0.14);
    border-radius: var(--radius-l) var(--radius-l) 0 0; padding: 26px 26px 0; backdrop-filter: blur(6px);
  }
  .corsia-hero {
    position: relative; height: 46px; border-top: 1px dashed rgba(255,255,255,0.22); display: flex; align-items: center;
    overflow: hidden;
  }
  .corsia-hero:first-child { border-top: none; }
  .corsia-hero .numero {
    font-family: var(--font-mono); font-size: 0.72rem; color: rgba(255,255,255,0.5); width: 28px; flex-shrink: 0;
  }
  .corsia-hero .nuotatore {
    position: absolute; top: 50%; transform: translateY(-50%); display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); padding: 6px 14px 6px 10px;
    border-radius: 999px; font-size: 0.82rem; font-weight: 600; color: white; white-space: nowrap;
    animation: attraversa 13s linear infinite;
  }
  .corsia-hero .nuotatore .puntino { width: 6px; height: 6px; border-radius: 50%; background: var(--color-sun); flex-shrink: 0; }
  @keyframes attraversa { from { left: -260px; } to { left: 104%; } }
  @media (prefers-reduced-motion: reduce) { .corsia-hero .nuotatore { animation: none; left: 24px; } }

  /* ---------- Sezioni generiche ---------- */
  section { padding: 96px 0; }
  .intro-sezione { max-width: 620px; margin-bottom: 56px; }
  .intro-sezione .eyebrow { color: var(--color-water); }
  .intro-sezione .eyebrow::before { background: var(--color-water); }
  .intro-sezione h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); margin-bottom: 16px; }
  .intro-sezione p { color: var(--color-ink-60); font-size: 1.05rem; }

  /* ---------- Il problema ---------- */
  .problema { background: white; }
  .problema-griglia { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  @media (max-width: 860px) { .problema-griglia { grid-template-columns: 1fr; } }
  .problema-card {
    background: var(--color-foam); border-radius: var(--radius-m); padding: 26px 24px; border: 1px solid var(--color-mist);
  }
  .problema-card .simbolo { font-family: var(--font-mono); font-size: 0.78rem; color: var(--color-coral); margin-bottom: 14px; display: block; }
  .problema-card p { color: var(--color-ink-60); font-size: 0.95rem; }
  .problema-card strong { display: block; color: var(--color-ink); font-size: 1.05rem; margin-bottom: 8px; font-family: var(--font-display); font-weight: 600; }

  /* ---------- Corsie / funzionalità ---------- */
  .corsie { background: var(--color-deep); color: white; }
  .corsie .intro-sezione .eyebrow { color: var(--color-sun); }
  .corsie .intro-sezione .eyebrow::before { background: var(--color-sun); }
  .corsie .intro-sezione h2 { color: white; }
  .corsie .intro-sezione p { color: rgba(255,255,255,0.68); }

  .lista-corsie { display: flex; flex-direction: column; border-top: 1px solid rgba(255,255,255,0.14); }
  .riga-corsia {
    display: grid; grid-template-columns: 90px 1fr 1.3fr; gap: 32px; align-items: start; padding: 30px 0;
    border-bottom: 1px solid rgba(255,255,255,0.14);
  }
  @media (max-width: 780px) { .riga-corsia { grid-template-columns: 56px 1fr; } .riga-corsia .rc-desc { grid-column: 1 / -1; } }
  .riga-corsia .rc-numero { font-family: var(--font-mono); font-size: 1.6rem; color: rgba(255,255,255,0.3); }
  .riga-corsia .rc-titolo { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }
  .riga-corsia .rc-desc { color: rgba(255,255,255,0.72); font-size: 0.98rem; }
  .riga-corsia:hover .rc-numero { color: var(--color-sun); }

  /* ---------- Ruoli ---------- */
  .ruoli { background: white; }
  .griglia-ruoli { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  @media (max-width: 960px) { .griglia-ruoli { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .griglia-ruoli { grid-template-columns: 1fr; } }
  .ruolo-card {
    padding: 26px 22px; border-radius: var(--radius-m); background: var(--color-foam); border: 1px solid var(--color-mist);
    transition: border-color 0.15s, transform 0.15s;
  }
  .ruolo-card:hover { border-color: var(--color-aqua); transform: translateY(-3px); }
  .ruolo-card .ru-icona {
    width: 38px; height: 38px; border-radius: 10px; background: var(--color-mist); display: flex; align-items: center;
    justify-content: center; margin-bottom: 16px; color: var(--color-water);
  }
  .ruolo-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
  .ruolo-card p { color: var(--color-ink-60); font-size: 0.9rem; }

  /* ---------- Come funziona ---------- */
  .percorso { background: var(--color-mist); }
  .passi { display: flex; flex-direction: column; gap: 0; }
  .passo { display: grid; grid-template-columns: 60px 1fr; gap: 24px; padding: 28px 0; position: relative; }
  .passo:not(:last-child)::after {
    content: ""; position: absolute; left: 29px; top: 68px; bottom: -28px; width: 2px; background: var(--color-water); opacity: 0.25;
  }
  .passo .p-numero {
    width: 60px; height: 60px; border-radius: 50%; background: var(--color-deep); color: white; display: flex;
    align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; flex-shrink: 0;
  }
  .passo h3 { font-size: 1.15rem; margin-bottom: 8px; }
  .passo p { color: var(--color-ink-60); }

  /* ---------- CTA finale ---------- */
  .cta-finale {
    background: linear-gradient(120deg, var(--color-deep), var(--color-water)); color: white; text-align: center;
    position: relative; overflow: hidden;
  }
  .cta-finale .wrap { position: relative; z-index: 2; max-width: 720px; }
  .cta-finale h2 { color: white; font-size: clamp(1.9rem, 3.6vw, 2.7rem); margin-bottom: 18px; }
  .cta-finale p { color: rgba(255,255,255,0.78); font-size: 1.05rem; margin-bottom: 34px; }
  .cta-finale .hero-azioni { justify-content: center; margin-bottom: 0; }

  .form-contatto {
    max-width: 520px; margin: 40px auto 0; text-align: left; background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18); border-radius: var(--radius-l); padding: 28px;
  }
  .form-contatto .campo { margin-bottom: 16px; }
  .form-contatto label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 6px; color: rgba(255,255,255,0.85); }
  .form-contatto input, .form-contatto textarea {
    width: 100%; padding: 12px 14px; border-radius: 9px; border: 1px solid rgba(255,255,255,0.25);
    background: rgba(255,255,255,0.95); font-family: var(--font-body); font-size: 0.94rem; color: var(--color-ink);
  }
  .form-contatto textarea { resize: vertical; min-height: 90px; }
  .form-contatto .btn-chiaro { width: 100%; justify-content: center; margin-top: 6px; }
  .conferma-invio { display: none; text-align: center; padding: 20px 0; }
  .conferma-invio.visibile { display: block; }
  .conferma-invio .segno { font-size: 2.2rem; margin-bottom: 10px; }

  /* ---------- Footer ---------- */
  footer { background: var(--color-deep); color: rgba(255,255,255,0.6); padding: 48px 0 32px; }
  .footer-riga { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
  .footer-riga .marchio span { color: white; }
  footer nav { display: flex; gap: 26px; flex-wrap: wrap; }
  footer nav a { text-decoration: none; font-size: 0.86rem; color: rgba(255,255,255,0.6); }
  footer nav a:hover { color: white; }
  .footer-fine {
    margin-top: 32px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.12); font-size: 0.8rem;
    color: rgba(255,255,255,0.4); font-family: var(--font-mono);
  }

  /* ---------- Componente condiviso: cerchio di conferma ---------- */
  .m-check { width: 46px; height: 46px; border-radius: 50%; background: #E4F7EC; color: #1E7A46; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; }

  /* ---------- Componenti condivisi: etichetta "badge" e finta chat dell'assistente AI ---------- */
  .d-badge {
    display: inline-block; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.04em;
    text-transform: uppercase; color: var(--color-coral); background: #FFEAE5; padding: 5px 12px; border-radius: 999px;
    margin-bottom: 16px;
  }
  .d-mockup {
    background: white; border: 1px solid var(--color-mist); border-radius: 12px; padding: 18px; box-shadow: var(--shadow-card);
  }
  .d-msg { font-size: 0.85rem; padding: 10px 14px; border-radius: 12px; margin-bottom: 10px; max-width: 90%; line-height: 1.4; }
  .d-msg:last-child { margin-bottom: 0; }
  .d-msg.utente { background: var(--color-mist); color: var(--color-ink); margin-left: auto; border-bottom-right-radius: 3px; }
  .d-msg.assistente {
    background: var(--color-deep); color: white; border-bottom-left-radius: 3px; display: flex; gap: 8px; align-items: flex-start;
  }
  .d-puntino { width: 6px; height: 6px; border-radius: 50%; background: var(--color-sun); flex-shrink: 0; margin-top: 6px; }

  /* ---------- Comparsa allo scroll ---------- */
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .reveal.visibile { opacity: 1; transform: translateY(0); }
  @media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }