*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #0b0c0f;
      --surface: #13151a;
      --border: #1f2229;
      --text: #e8eaf0;
      --muted: #9ca3af;
      --accent: #00d4ff;
      --accent2: #0077cc;
      --white: #ffffff;
    }

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-weight: 300;
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* ── NAVBAR ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.25rem 5vw;
      background: rgba(11,12,15,0.88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
    }

    .logo { display: inline-flex; align-items: center; text-decoration: none; }

    .back-link {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--muted);
      text-decoration: none;
      font-size: 0.875rem;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      transition: color 0.2s;
    }
    .back-link:hover { color: var(--accent); }
    .back-link svg { transition: transform 0.2s; }
    .back-link:hover svg { transform: translateX(-3px); }

    /* ── HERO ── */
    .page-hero {
      min-height: 52vh;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 8rem 5vw 4rem;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border);
    }

    .hero-grid-overlay {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 90% 90% at 20% 60%, black 20%, transparent 75%);
    }

    .hero-glow {
      position: absolute;
      top: 30%; left: 70%;
      width: 500px; height: 500px;
      background: radial-gradient(circle, rgba(0,119,204,0.15) 0%, transparent 70%);
      transform: translate(-50%, -50%);
      pointer-events: none;
    }

    /* Tire ring decoration */
    .tire-ring {
      position: absolute;
      right: 5vw;
      top: 50%;
      transform: translateY(-50%);
      width: 280px; height: 280px;
      opacity: 0.12;
    }

    .page-hero .section-label {
      opacity: 0;
      animation: fadeUp 0.7s 0.2s forwards;
    }
    .page-hero h1 {
      font-family: 'Exo 2', sans-serif;
      font-weight: 800;
      font-size: clamp(2.2rem, 5vw, 4.5rem);
      line-height: 1.04;
      letter-spacing: -0.03em;
      color: var(--white);
      max-width: 18ch;
      margin-top: 0.75rem;
      opacity: 0;
      animation: fadeUp 0.7s 0.35s forwards;
    }
    .page-hero h1 em { font-style: normal; color: var(--accent); }
    .page-hero .lead {
      max-width: 52ch;
      margin-top: 1.25rem;
      color: var(--muted);
      font-size: 1rem;
      opacity: 0;
      animation: fadeUp 0.7s 0.5s forwards;
    }

    /* ── SECTIONS ── */
    section { padding: 6rem 5vw; }

    .section-label {
      font-size: 0.72rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1rem;
    }
    h2 {
      font-family: 'Exo 2', sans-serif;
      font-weight: 700;
      font-size: clamp(1.6rem, 3.5vw, 2.6rem);
      letter-spacing: -0.025em;
      color: var(--white);
      line-height: 1.1;
    }
    .divider {
      width: 40px; height: 2px;
      background: var(--accent);
      margin: 1.5rem 0;
    }

    /* ── INTRO / DESCRIÇÃO ── */
    #descricao { background: var(--surface); border-bottom: 1px solid var(--border); }
    .desc-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 5rem;
      align-items: start;
      max-width: 1100px;
    }
    .desc-left p { color: var(--muted); margin-bottom: 1.1rem; font-size: 1rem; }

    .spec-list {
      display: flex;
      flex-direction: column;
      gap: 0;
      border: 1px solid var(--border);
    }
    .spec-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 1.25rem;
      border-bottom: 1px solid var(--border);
      font-size: 0.875rem;
      transition: background 0.2s;
    }
    .spec-item:last-child { border-bottom: none; }
    .spec-item:hover { background: rgba(0,212,255,0.04); }
    .spec-item .spec-key { color: var(--muted); }
    .spec-item .spec-val { color: var(--accent); font-family: 'Exo 2', sans-serif; font-weight: 600; }

    /* ── SERVIÇOS ESPECÍFICOS ── */
    #servicos-pneus { background: var(--bg); }
    .services-intro { max-width: 560px; margin-bottom: 3.5rem; }
    .services-intro p { color: var(--muted); margin-top: 0.75rem; }

    .svc-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1px;
      background: var(--border);
      border: 1px solid var(--border);
    }
    .svc-card {
      background: var(--bg);
      padding: 2.25rem;
      position: relative;
      overflow: hidden;
      transition: background 0.25s;
    }
    .svc-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 2px;
      background: var(--accent);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.3s;
    }
    .svc-card:hover { background: var(--surface); }
    .svc-card:hover::before { transform: scaleX(1); }
    .svc-card h3 {
      font-family: 'Exo 2', sans-serif;
      font-weight: 600;
      font-size: 1rem;
      color: var(--white);
      margin-bottom: 0.65rem;
    }
    .svc-card p { color: var(--muted); font-size: 0.9rem; line-height: 1.65; }
    .svc-icon {
      width: 40px; height: 40px;
      color: var(--accent);
      margin-bottom: 1.25rem;
    }

    /* ── PORTFÓLIO ── */
    #portfolio { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .portfolio-intro { max-width: 560px; margin-bottom: 3.5rem; }
    .portfolio-intro p { color: var(--muted); margin-top: 0.75rem; }

    .portfolio-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1.5rem;
    }

    .project-card {
      border: 1px solid var(--border);
      background: var(--bg);
      overflow: hidden;
      transition: border-color 0.25s, transform 0.25s;
    }
    .project-card:hover {
      border-color: var(--accent);
      transform: translateY(-3px);
    }

    .project-visual {
      height: 180px;
      background: var(--surface);
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }
    .project-visual svg { opacity: 0.6; }
    .project-visual .proj-num {
      position: absolute;
      bottom: 1rem; right: 1.25rem;
      font-family: 'Exo 2', sans-serif;
      font-size: 4rem;
      font-weight: 800;
      color: rgba(0,212,255,0.06);
      line-height: 1;
    }

    .project-body { padding: 1.5rem; }
    .project-tag {
      display: inline-block;
      font-size: 0.7rem;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--accent);
      background: rgba(0,212,255,0.08);
      border: 1px solid rgba(0,212,255,0.15);
      padding: 0.2rem 0.6rem;
      border-radius: 2px;
      margin-bottom: 0.75rem;
    }
    .project-body h3 {
      font-family: 'Exo 2', sans-serif;
      font-weight: 600;
      font-size: 1rem;
      color: var(--white);
      margin-bottom: 0.5rem;
    }
    .project-body p { color: var(--muted); font-size: 0.875rem; line-height: 1.6; }

    .project-meta {
      display: flex;
      gap: 1.5rem;
      margin-top: 1.25rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border);
    }
    .meta-item { font-size: 0.78rem; }
    .meta-item .meta-label { color: var(--muted); display: block; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.68rem; }
    .meta-item .meta-val { color: var(--text); }

    /* ── CTA ── */
    #cta-pneus {
      background: var(--bg);
      text-align: center;
      padding: 6rem 5vw;
    }
    #cta-pneus h2 { margin-bottom: 1rem; }
    #cta-pneus p { color: var(--muted); max-width: 46ch; margin: 0 auto 2.5rem; }
    .btn-primary {
      display: inline-block;
      background: var(--accent);
      color: #000;
      padding: 0.85rem 2rem;
      font-family: 'DM Sans', sans-serif;
      font-size: 0.9rem;
      text-decoration: none;
      border-radius: 2px;
      transition: opacity 0.2s, transform 0.2s;
    }
    .btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }

    /* ── FOOTER ── */
    footer {
      padding: 2.5rem 5vw;
      border-top: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }
    footer p { font-size: 0.8rem; color: var(--muted); }

    /* ── ANIMATIONS ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible { opacity: 1; transform: none; }

    /* ── RESPONSIVE ── */
    @media (max-width: 768px) {
      .desc-grid { grid-template-columns: 1fr; gap: 3rem; }
      .tire-ring { display: none; }
    }