:root {
    --bg: #0e1116;
    --bg-soft: #161b22;
    --card: #1c2330;
    --text: #e8e6e1;
    --text-dim: #8b94a3;
    --accent: #e8a838;
    --accent-soft: rgba(232,168,56,0.12);
    --line: rgba(255,255,255,0.08);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  .container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

  /* Reveal animation */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  .reveal.visible { opacity: 1; transform: translateY(0); }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }

  /* Hero */
  .hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--bg);
    overflow: hidden;
  }
  .hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: 0;
  }
  .hero-overlay {
    position: absolute; inset: 0;
    background:
      linear-gradient(180deg, rgba(14,17,22,0.75) 0%, rgba(14,17,22,0.6) 50%, rgba(14,17,22,0.9) 100%),
      radial-gradient(ellipse 80% 50% at 70% 20%, rgba(232,168,56,0.08), transparent);
    z-index: 1;
  }
  .hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 320px; gap: 60px; align-items: center; width: 100%; }
  .hero-label {
    display: inline-block;
    padding: 6px 14px;
    background: var(--accent-soft);
    color: var(--accent);
    border-radius: 100px;
    font-size: 13px;
    letter-spacing: 1px;
    margin-bottom: 24px;
  }
  .hero h1 {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 20px;
  }
  .hero h1 .accent { color: var(--accent); }
  .hero p.lead {
    font-size: 18px;
    color: var(--text-dim);
    max-width: 480px;
    margin-bottom: 36px;
  }
  .hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
  .btn {
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .btn-primary {
    background: var(--accent);
    color: #1a1a1a;
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(232,168,56,0.3); }
  .btn-ghost {
    border: 1px solid var(--line);
    color: var(--text);
  }
  .btn-ghost:hover { background: rgba(255,255,255,0.05); }

  .hero-photo {
    aspect-ratio: 3/4;
    border-radius: 24px;
    background: var(--card);
    border: 1px solid var(--line);
    overflow: hidden;
    position: relative;
  }
  .hero-photo img { width: 100%; height: 100%; object-fit: cover; }
  .hero-photo .placeholder {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim); font-size: 14px;
    text-align: center;
  }

  /* Stats */
  .stats {
    padding: 60px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
  .stat-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
  }
  .stat-label { color: var(--text-dim); font-size: 14px; }

  /* Sections */
  section { padding: 100px 0; }
  .section-tag {
    color: var(--accent);
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
  }
  h2.section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.5px;
  }

  /* About */
  .about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: start; }
  .about-left { display: flex; flex-direction: column; gap: 28px; }
  .about-photo {
    aspect-ratio: 16/10;
    border-radius: 16px;
    overflow: hidden;
    background: var(--card);
    border: 1px solid var(--line);
    position: relative;
  }
  .about-photo img { width: 100%; height: 100%; object-fit: cover; }
  .about-photo .ph {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim); font-size: 14px; text-align: center;
  }
  .about-text p { color: var(--text-dim); margin-bottom: 16px; font-size: 16px; }
  .about-text strong { color: var(--text); }
  .skill-list { display: flex; flex-direction: column; gap: 16px; }
  .skill-item {
    padding: 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    transition: transform 0.2s ease, border-color 0.2s ease;
  }
  .skill-item:hover { transform: translateX(4px); border-color: var(--accent); }
  .skill-item h4 { font-size: 16px; margin-bottom: 4px; }
  .skill-item p { font-size: 14px; color: var(--text-dim); }

  /* Cases */
  .cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .case-card {
    aspect-ratio: 4/3;
    background: var(--card);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--line);
    transition: transform 0.3s ease;
  }
  .case-card:hover { transform: translateY(-4px); }
  .case-card img { width: 100%; height: 100%; object-fit: cover; }
  .case-card .ph {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim); font-size: 13px;
    text-align: center; padding: 20px;
  }
  .case-card .label {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    font-size: 14px;
  }

  /* Pricing */
  .price-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .price-card {
    padding: 28px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    transition: border-color 0.2s ease;
  }
  .price-card:hover { border-color: var(--accent); }
  .price-card .name { font-size: 16px; }
  .price-card .sub { font-size: 13px; color: var(--text-dim); margin-top: 4px; }
  .price-card .val { font-size: 22px; font-weight: 700; color: var(--accent); white-space: nowrap; }
  .price-note { margin-top: 20px; font-size: 13px; color: var(--text-dim); }

  /* Contact */
  .contact {
    background:
      radial-gradient(ellipse 70% 60% at 50% 50%, rgba(232,168,56,0.06), transparent),
      var(--bg-soft);
    border-top: 1px solid var(--line);
    text-align: center;
  }
  .contact-inner { max-width: 560px; margin: 0 auto; }
  .phone-big {
    display: inline-block;
    font-size: clamp(32px, 6vw, 48px);
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
    margin: 20px 0 30px;
  }
  .wechat-qr {
    width: 180px; height: 180px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: #999; font-size: 13px;
    text-align: center;
  }
  .contact .label { color: var(--text-dim); margin-top: 16px; font-size: 14px; }

  /* Sticky call bar */
  .call-bar {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
    background: var(--accent);
    color: #1a1a1a;
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 700;
    font-size: 15px;
    box-shadow: 0 8px 30px rgba(232,168,56,0.3);
    z-index: 100;
    transition: transform 0.2s ease;
  }
  .call-bar:hover { transform: translateX(-50%) translateY(-2px); }

  @media (max-width: 800px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-photo { max-width: 280px; margin: 0 auto; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .price-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .stat-num { font-size: 32px; }
    section { padding: 60px 0; }
  }