*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html, body { height: 100%; }

    :root {
      --blue:      #0077CC;
      --blue-light:#66B2FF;
      --space:     #050510;
      --space-mid: #0a0a2a;
      --white:     #FFFFFF;
      --gray:      #4D4D4D;
      --font-head: 'Montserrat', sans-serif;
      --font-body: 'Lato', sans-serif;
    }

    body {
      font-family: var(--font-body);
      background: var(--space);
      color: var(--white);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    /* ── STAR FIELD ── */
    .stars {
      position: fixed;
      inset: 0;
      z-index: 0;
      pointer-events: none;
    }
    .stars canvas { width: 100%; height: 100%; display: block; }

    /* ── LAYOUT ── */
    .page {
      position: relative;
      z-index: 1;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }

    /* ── HEADER ── */
    .header {
      padding: 20px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .header__logo {
      font-family: var(--font-head);
      font-weight: 800;
      font-size: 18px;
      color: var(--white);
      letter-spacing: -0.01em;
    }
    .header__logo span { color: var(--blue-light); }
    .header__link {
      font-family: var(--font-head);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.5);
      text-decoration: none;
      transition: color 0.15s;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .header__link:hover { color: var(--white); }
    .header__link svg { opacity: 0.6; }

    /* ── MAIN ── */
    .main {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 40px 24px;
    }

    .intro {
      text-align: center;
      margin-bottom: 56px;
    }
    .intro__eyebrow {
      font-family: var(--font-head);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--blue-light);
      margin-bottom: 12px;
    }
    .intro__title {
      font-family: var(--font-head);
      font-size: clamp(22px, 3vw, 32px);
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 8px;
    }
    .intro__sub {
      font-size: 15px;
      color: rgba(255,255,255,0.45);
      font-weight: 300;
    }

    /* ── ORBITAL MAP — desktop ── */
    .orbital-map {
      width: 100%;
      max-width: 1100px;
      position: relative;
      margin: 0 auto;
    }

    /* Orbital track line */
    .orbital-track {
      position: absolute;
      top: 50%;
      left: 0; right: 0;
      height: 1px;
      background: linear-gradient(to right,
        transparent 0%,
        rgba(102,178,255,0.08) 10%,
        rgba(102,178,255,0.12) 50%,
        rgba(102,178,255,0.08) 90%,
        transparent 100%
      );
      transform: translateY(-50%);
      pointer-events: none;
    }

    .planets-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      padding: 32px 0;
      position: relative;
    }

    /* ── PLANET ITEM ── */
    .planet {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      text-decoration: none;
      flex: 1;
      min-width: 0;
      transition: transform 0.2s;
      position: relative;
    }
    .planet:hover { transform: translateY(-6px); }
    .planet:hover .planet__orb { filter: brightness(1.25); }
    .planet:hover .planet__name { color: var(--white); }

    .planet__orb-wrap {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .planet__orb {
      border-radius: 50%;
      display: block;
      transition: filter 0.2s;
      flex-shrink: 0;
    }

    .planet__name {
      font-family: var(--font-head);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.6);
      text-align: center;
      transition: color 0.2s;
      white-space: nowrap;
    }

    /* Saturn ring */
    .planet--saturn .planet__orb-wrap::before {
      content: '';
      position: absolute;
      width: 180%;
      height: 30%;
      border-radius: 50%;
      border: 3px solid rgba(196,172,105,0.55);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) rotateX(75deg);
      pointer-events: none;
      z-index: -1;
    }

    /* ── PLANET SIZES & COLORS ── */
    /* Sun */
    .planet--sun .planet__orb {
      width: 72px; height: 72px;
      background: radial-gradient(circle at 38% 35%,
        #fff7c0 0%, #FDB813 30%, #f08c00 65%, #c05000 100%);
      box-shadow: 0 0 24px 8px rgba(253,184,19,0.45), 0 0 48px 16px rgba(253,184,19,0.2);
    }
    /* Mercury */
    .planet--mercury .planet__orb {
      width: 28px; height: 28px;
      background: radial-gradient(circle at 38% 35%,
        #d0cdc8 0%, #9E9E9E 50%, #6e6e6e 100%);
      box-shadow: 0 0 8px 2px rgba(158,158,158,0.2);
    }
    /* Venus */
    .planet--venus .planet__orb {
      width: 38px; height: 38px;
      background: radial-gradient(circle at 38% 35%,
        #faeab0 0%, #E8C46A 50%, #c49a30 100%);
      box-shadow: 0 0 10px 3px rgba(232,196,106,0.3);
    }
    /* Earth */
    .planet--earth .planet__orb {
      width: 40px; height: 40px;
      background: radial-gradient(circle at 38% 35%,
        #a8d8f0 0%, #4B9CD3 40%, #1a6b9a 70%, #2d8a4e 85%, #1a5c30 100%);
      box-shadow: 0 0 12px 3px rgba(75,156,211,0.35);
    }
    /* Mars */
    .planet--mars .planet__orb {
      width: 34px; height: 34px;
      background: radial-gradient(circle at 38% 35%,
        #e87040 0%, #C1440E 55%, #8b2800 100%);
      box-shadow: 0 0 10px 3px rgba(193,68,14,0.3);
    }
    /* Jupiter */
    .planet--jupiter .planet__orb {
      width: 64px; height: 64px;
      background: radial-gradient(circle at 38% 35%,
        #e8c89a 0%, #C88B3A 30%, #a06820 60%, #c89050 80%, #8a5010 100%);
      box-shadow: 0 0 18px 5px rgba(200,139,58,0.3);
    }
    /* Saturn */
    .planet--saturn .planet__orb {
      width: 56px; height: 56px;
      background: radial-gradient(circle at 38% 35%,
        #f5eec0 0%, #E4D191 40%, #c0a850 70%, #a08830 100%);
      box-shadow: 0 0 16px 4px rgba(228,209,145,0.25);
    }
    /* Uranus */
    .planet--uranus .planet__orb {
      width: 46px; height: 46px;
      background: radial-gradient(circle at 38% 35%,
        #c0f8f8 0%, #7DE8E8 50%, #40c0c0 100%);
      box-shadow: 0 0 12px 4px rgba(125,232,232,0.3);
    }
    /* Neptune */
    .planet--neptune .planet__orb {
      width: 44px; height: 44px;
      background: radial-gradient(circle at 38% 35%,
        #8090ff 0%, #5B7FFF 45%, #2030c0 100%);
      box-shadow: 0 0 12px 4px rgba(91,127,255,0.35);
    }
    /* Pluto */
    .planet--pluto .planet__orb {
      width: 22px; height: 22px;
      background: radial-gradient(circle at 38% 35%,
        #e0d0b8 0%, #C4A882 50%, #907050 100%);
      box-shadow: 0 0 6px 2px rgba(196,168,130,0.2);
    }

    /* ── MOBILE GRID ── */
    .planet-grid {
      display: none;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px 12px;
      width: 100%;
      max-width: 480px;
      margin: 0 auto;
    }
    .planet-grid .planet {
      flex: none;
      width: 100%;
    }
    .planet-grid .planet__orb-wrap {
      margin: 0 auto;
    }

    /* ── FOOTER ── */
    .footer {
      padding: 20px 32px;
      border-top: 1px solid rgba(255,255,255,0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer__copy {
      font-size: 12px;
      color: rgba(255,255,255,0.2);
      font-family: var(--font-head);
    }
    .footer__links {
      display: flex;
      gap: 20px;
    }
    .footer__links a {
      font-family: var(--font-head);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: rgba(255,255,255,0.3);
      text-decoration: none;
      transition: color 0.15s;
    }
    .footer__links a:hover { color: rgba(255,255,255,0.8); }

    /* ── RESPONSIVE ── */
    @media (max-width: 900px) {
      .orbital-map { display: none; }
      .planet-grid { display: grid; }
      /* Scale up orbs slightly for touch */
      .planet--sun .planet__orb    { width: 60px; height: 60px; }
      .planet--jupiter .planet__orb{ width: 52px; height: 52px; }
      .planet--saturn .planet__orb { width: 46px; height: 46px; }
      .planet--uranus .planet__orb { width: 38px; height: 38px; }
      .planet--neptune .planet__orb{ width: 36px; height: 36px; }
      .planet--earth .planet__orb  { width: 34px; height: 34px; }
      .planet--venus .planet__orb  { width: 32px; height: 32px; }
      .planet--mars .planet__orb   { width: 28px; height: 28px; }
      .planet--mercury .planet__orb{ width: 24px; height: 24px; }
      .planet--pluto .planet__orb  { width: 20px; height: 20px; }
      .planet__name { font-size: 9px; }
    }
    @media (max-width: 480px) {
      .planet-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
      .header { padding: 16px 20px; }
      .footer { padding: 16px 20px; flex-direction: column; align-items: flex-start; }
      .intro { margin-bottom: 36px; }
    }
    @media (prefers-reduced-motion: reduce) {
      .planet { transition: none; }
      .planet__orb { transition: none; }
    }