:root {
    --bg: #0f0f13;
    --surface: #18181f;
    --surface-light: #22222c;
    --border: #2e2e3a;
    --text: #f2f2f5;
    --text-muted: #9a9aa8;
    --accent: #ffb800;
    --accent-dark: #d99a00;
    --radius: 12px;
    --radius-sm: 8px;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; font-size: 16px; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: var(--accent); text-decoration: none; }
  img { max-width: 100%; display: block; }

  /* Header & Nav */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(15, 15, 19, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .header-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
  }
  .brand {
    display: flex; align-items: center; gap: 10px;
    font-size: 1.2rem; font-weight: 700; color: var(--text);
  }
  .brand img { height: 32px; width: auto; border-radius: 6px; }
  .nav-links { display: flex; gap: 24px; list-style: none; }
  .nav-links a {
    color: var(--text-muted); font-size: 0.95rem; transition: color 0.2s;
    position: relative; padding: 4px 0;
  }
  .nav-links a:hover { color: var(--accent); }
  .nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

  /* Buttons */
  .btn {
    display: inline-block; padding: 12px 28px;
    border-radius: 50px; font-weight: 600; font-size: 1rem;
    text-align: center; cursor: pointer; border: none;
    transition: transform 0.2s, background 0.2s;
  }
  .btn:active { transform: scale(0.97); }
  .btn-primary { background: var(--accent); color: #111; }
  .btn-primary:hover { background: var(--accent-dark); }
  .btn-outline {
    background: transparent; color: var(--accent);
    border: 1px solid var(--accent);
  }
  .btn-outline:hover { background: rgba(255, 184, 0, 0.1); }

  /* Sections */
  section { padding: 64px 20px; }
  .container { max-width: 1200px; margin: 0 auto; }
  .section-title {
    font-size: 1.8rem; font-weight: 700; margin-bottom: 8px;
    letter-spacing: -0.02em;
  }
  .section-desc {
    color: var(--text-muted); font-size: 1rem; margin-bottom: 36px;
    max-width: 640px;
  }

  /* Hero */
  .hero {
    display: flex; flex-direction: column; align-items: center; text-align: center;
    padding: 80px 20px 60px; position: relative; overflow: hidden;
  }
  .hero::before {
    content: ''; position: absolute; top: -20%; left: 50%;
    transform: translateX(-50%); width: 80%; height: 60%;
    background: radial-gradient(ellipse at center, rgba(255, 184, 0, 0.08) 0%, transparent 70%);
    pointer-events: none;
  }
  .hero h1 {
    font-size: 2.6rem; font-weight: 800; line-height: 1.2;
    margin-bottom: 16px; letter-spacing: -0.03em;
    max-width: 800px;
  }
  .hero h1 span { color: var(--accent); }
  .hero p {
    color: var(--text-muted); font-size: 1.1rem; max-width: 560px;
    margin-bottom: 32px;
  }
  .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

  /* Today updates */
  .updates-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
  }
  .update-card {
    background: var(--surface); border-radius: var(--radius);
    overflow: hidden; border: 1px solid var(--border);
    transition: transform 0.2s, border-color 0.2s;
  }
  .update-card:hover { transform: translateY(-4px); border-color: var(--accent); }
  .update-card img {
    width: 100%; aspect-ratio: 3/4; object-fit: cover;
    background: var(--surface-light);
  }
  .update-card-info { padding: 12px 14px; }
  .update-card-info h3 {
    font-size: 0.95rem; font-weight: 600; margin-bottom: 4px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .update-card-info p { font-size: 0.8rem; color: var(--text-muted); }

  /* Zones / Categories */
  .zones-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  }
  .zone-card {
    background: var(--surface); border-radius: var(--radius);
    padding: 32px; border: 1px solid var(--border);
    transition: border-color 0.2s;
  }
  .zone-card:hover { border-color: var(--accent); }
  .zone-card h3 { font-size: 1.3rem; margin-bottom: 12px; color: var(--accent); }
  .zone-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

  /* Horizontal Scroll Gallery */
  .gallery-scroll {
    display: flex; gap: 20px; overflow-x: auto; padding-bottom: 16px;
    scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  }
  .gallery-scroll::-webkit-scrollbar { height: 6px; }
  .gallery-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
  .gallery-item {
    flex: 0 0 200px; scroll-snap-align: start;
    background: var(--surface); border-radius: var(--radius);
    overflow: hidden; border: 1px solid var(--border);
  }
  .gallery-item img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
  .gallery-item p { padding: 12px 14px; font-size: 0.9rem; font-weight: 500; }

  /* How to get */
  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .step {
    background: var(--surface); border-radius: var(--radius);
    padding: 28px; border: 1px solid var(--border); position: relative;
  }
  .step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(255, 184, 0, 0.15); color: var(--accent);
    font-weight: 700; font-size: 1rem; margin-bottom: 16px;
  }
  .step h3 { font-size: 1.1rem; margin-bottom: 8px; }
  .step p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

  /* Interactive / Poll */
  .interact-box {
    background: var(--surface); border-radius: var(--radius);
    padding: 32px; border: 1px solid var(--border);
  }
  .poll-question { font-size: 1.1rem; font-weight: 600; margin-bottom: 20px; }
  .poll-options { display: flex; flex-direction: column; gap: 12px; }
  .poll-btn {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--surface-light); border: 1px solid var(--border);
    padding: 16px 20px; border-radius: var(--radius-sm);
    color: var(--text); font-size: 0.95rem; cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
    text-align: left; width: 100%;
  }
  .poll-btn:hover { border-color: var(--accent); }
  .poll-btn.voted { border-color: var(--accent); background: rgba(255,184,0,0.08); }
  .poll-bar-wrap {
    flex-grow: 1; height: 6px; background: var(--border);
    border-radius: 3px; margin: 0 16px; overflow: hidden; display: none;
  }
  .poll-btn.voted .poll-bar-wrap { display: block; }
  .poll-bar { height: 100%; background: var(--accent); width: 0; transition: width 0.6s ease; }
  .poll-count { font-size: 0.85rem; color: var(--text-muted); min-width: 40px; text-align: right; }

  /* FAQ */
  .faq-list { display: flex; flex-direction: column; gap: 12px; }
  .faq-item {
    background: var(--surface); border-radius: var(--radius-sm);
    border: 1px solid var(--border); overflow: hidden;
  }
  .faq-q {
    width: 100%; padding: 20px; display: flex; justify-content: space-between;
    align-items: center; background: none; border: none; color: var(--text);
    font-size: 1rem; font-weight: 600; cursor: pointer; text-align: left;
    font-family: inherit; gap: 16px;
  }
  .faq-q:hover { color: var(--accent); }
  .faq-icon { font-size: 1.2rem; transition: transform 0.3s; flex-shrink: 0; }
  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-a {
    max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
    padding: 0 20px;
  }
  .faq-item.open .faq-a { max-height: 200px; padding-bottom: 20px; }
  .faq-a p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }

  /* Footer */
  .site-footer {
    border-top: 1px solid var(--border);
    padding: 40px 20px; margin-top: 40px;
    font-size: 0.8rem; color: var(--text-muted);
  }
  .footer-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; flex-direction: column; gap: 12px; align-items: center; text-align: center;
  }
  .footer-inner a { color: var(--text-muted); text-decoration: underline; }
  .footer-inner a:hover { color: var(--accent); }
  .footer-time { font-size: 0.78rem; opacity: 0.6; }

  /* Responsive */
  @media (max-width: 1024px) {
    .hero h1 { font-size: 2.2rem; }
    .zones-grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 768px) {
    html { font-size: 15px; }
    section { padding: 48px 16px; }
    .hero { padding: 60px 16px 40px; }
    .hero h1 { font-size: 1.7rem; }
    .hero p { font-size: 0.95rem; }
    .section-title { font-size: 1.5rem; }
    .nav-links {
      display: none; flex-direction: column; position: absolute;
      top: 64px; left: 0; right: 0; background: var(--surface);
      padding: 16px 20px; gap: 16px; border-bottom: 1px solid var(--border);
    }
    .nav-links.active { display: flex; }
    .nav-toggle { display: block; }
    .steps { grid-template-columns: 1fr; }
    .updates-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; }
    .update-card-info { padding: 10px 12px; }
    .update-card-info h3 { font-size: 0.85rem; }
    .zone-card { padding: 24px; }
    .interact-box { padding: 24px; }
  }