:root {
    --bg: #0B131A;
    --bg-elevated: #121D26;
    --bg-panel: #16232E;
    --border: #223341;
    --text: #E4EDF2;
    --text-dim: #8FA3B0;
    --cyan: #5CC9E8;
    --cyan-dim: #3A8FA8;
    --copper: #C97B4A;
    --copper-dim: #9C5E38;
    --font-display: 'Rajdhani', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow: 0 20px 60px rgba(0,0,0,0.5);
  }

  html[data-theme="light"] {
    --bg: #EEF2F5;
    --bg-elevated: #FFFFFF;
    --bg-panel: #FFFFFF;
    --border: #D5DEE4;
    --text: #16232E;
    --text-dim: #5A6C78;
    --cyan-dim: #2E7A93;
    --shadow: 0 20px 60px rgba(30,50,65,0.12);
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s ease, color 0.3s ease;
  }

  a { color: inherit; text-decoration: none; }

  .container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ===== NAV ===== */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  .nav-inner {
    position: relative;
    max-width: 1120px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.03em;
  }
  .brand img { width: 36px; height: 36px; border-radius: 6px; }
  .brand small {
    display: block;
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 0.6rem;
    color: var(--cyan);
    letter-spacing: 0.15em;
    text-transform: uppercase;
  }

  .theme-toggle {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 10px 16px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: border-color 0.2s ease;
    min-height: 44px;
  }
  .theme-toggle:hover { border-color: var(--cyan-dim); color: var(--text); }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
  }
  .nav-links a {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-dim);
    transition: color 0.2s ease;
    padding: 8px 0;
  }
  .nav-links a:hover { color: var(--cyan); }

  .nav-burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    padding: 0;
  }
  .nav-burger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text);
    margin: 0 auto;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-burger.open span:nth-child(2) { opacity: 0; }
  .nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  @media (max-width: 720px) {
    .nav-burger { display: flex; }
    .nav-links {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: flex-start;
      gap: 4px;
      background: var(--bg-elevated);
      border-bottom: 1px solid var(--border);
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease, padding 0.25s ease;
    }
    .nav-links.open {
      max-height: 320px;
      padding: 16px 24px 24px;
    }
    .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--border); }
    .nav-links .theme-toggle { margin-top: 12px; }
  }

  /* ===== HERO ===== */
  .hero {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center 20%;
  }
  .hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
      color-mix(in srgb, var(--bg) 20%, transparent) 0%,
      color-mix(in srgb, var(--bg) 55%, transparent) 55%,
      var(--bg) 100%);
  }
  .hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 0 24px 72px;
    max-width: 1120px;
    margin: 0 auto;
  }
  .hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--cyan);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .dot-live {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #4ADE80;
    box-shadow: 0 0 0 0 rgba(74,222,128,0.6);
    animation: pulse 2s infinite;
  }
  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(74,222,128,0.5); }
    70% { box-shadow: 0 0 0 8px rgba(74,222,128,0); }
    100% { box-shadow: 0 0 0 0 rgba(74,222,128,0); }
  }
  .hero h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.6rem, 7vw, 5.2rem);
    line-height: 0.95;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    margin-bottom: 20px;
  }
  .hero h1 span { color: var(--cyan); }
  .hero p {
    font-size: 1.05rem;
    color: var(--text-dim);
    max-width: 480px;
    margin-bottom: 32px;
  }
  .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

  .btn {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 14px 28px;
    border-radius: 4px;
    cursor: pointer;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .btn:hover { transform: translateY(-2px); }
  .btn-primary {
    background: var(--cyan);
    color: #06141C;
    box-shadow: 0 4px 20px color-mix(in srgb, var(--cyan) 40%, transparent);
  }
  .btn-primary:hover { box-shadow: 0 8px 28px color-mix(in srgb, var(--cyan) 55%, transparent); }
  .btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
  }
  .btn-ghost:hover { border-color: var(--cyan-dim); }

  /* ===== IP BAR ===== */
  .ip-bar {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
  }
  .ip-bar-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
  }
  .ip-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 4px;
  }
  .ip-value {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--cyan);
  }
  .copy-btn {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 10px 18px;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
  }
  .copy-btn:hover { border-color: var(--cyan); }
  .copy-btn.copied { background: var(--cyan); color: #06141C; border-color: var(--cyan); }

  /* ===== SECTION SHARED ===== */
  section { padding: 96px 0; }
  .section-head { margin-bottom: 48px; max-width: 560px; }
  .section-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--copper);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 12px;
  }
  .section-head h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    text-transform: uppercase;
    letter-spacing: -0.01em;
  }
  .section-head p {
    color: var(--text-dim);
    margin-top: 12px;
  }

  /* ===== MODES ===== */
  .modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
  }
  .mode-card {
    background: var(--bg-elevated);
    padding: 32px 28px;
  }
  .mode-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--cyan);
    letter-spacing: 0.1em;
    margin-bottom: 14px;
  }
  .mode-card h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.3rem;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .mode-card p { color: var(--text-dim); font-size: 0.9rem; }

  /* ===== GALLERY ===== */
  .gallery {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 20px;
  }
  .gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border);
    display: block;
  }
  .gallery-main { grid-row: span 2; }
  @media (max-width: 720px) {
    .gallery { grid-template-columns: 1fr; }
    .gallery-main { grid-row: span 1; }
  }

  /* ===== DOWNLOAD ===== */
  .download-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
  }
  .download-panel h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.8rem;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .download-panel p { color: var(--text-dim); max-width: 420px; }
  .download-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 14px;
  }

  /* ===== FOOTER ===== */
  footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
  }
  .footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
  }

  @media (max-width: 640px) {
    .download-panel { flex-direction: column; align-items: flex-start; }
  }