:root {
    --bg: #12140f;
    --bg-soft: #1b1e16;
    --bg-card: #232719;
    --line: #333a24;
    --text: #f1f5e6;
    --text-dim: #a9b394;
    --accent: #b6d54a;
    --accent-deep: #8fb022;
    --radius: 16px;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  .wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

  /* ---------- header ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(18,20,15,.88);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 62px;
  }
  .brand { display: flex; align-items: center; gap: 10px; }
  .brand img { height: 32px; width: auto; border-radius: 8px; }
  .brand span { font-size: 17px; font-weight: 700; letter-spacing: .5px; }
  .nav-links { display: none; gap: 26px; font-size: 14px; color: var(--text-dim); }
  .nav-links a:hover { color: var(--accent); }
  .header-cta {
    font-size: 13px; padding: 8px 16px; border-radius: 999px;
    background: var(--accent); color: #151a07; font-weight: 700;
  }

  /* ---------- hero ---------- */
  .hero {
    padding: 46px 0 56px;
    background:
      radial-gradient(circle at 85% 8%, rgba(182,213,74,.16), transparent 52%),
      radial-gradient(circle at 8% 90%, rgba(143,176,34,.10), transparent 46%);
    border-bottom: 1px solid var(--line);
  }
  .hero-grid { display: grid; gap: 40px; }
  .eyebrow {
    display: inline-block; font-size: 12px; letter-spacing: 2px;
    color: var(--accent); border: 1px solid rgba(182,213,74,.4);
    border-radius: 999px; padding: 4px 13px; margin-bottom: 18px;
  }
  .hero h1 {
    font-size: 30px; line-height: 1.32; font-weight: 800;
    letter-spacing: .3px; margin-bottom: 16px;
  }
  .hero h1 em { font-style: normal; color: var(--accent); }
  .hero-lead { color: var(--text-dim); font-size: 15.5px; margin-bottom: 26px; max-width: 520px; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
  .btn-download {
    display: inline-flex; align-items: center; gap: 9px;
    background: var(--accent); color: #151a07;
    font-weight: 800; font-size: 16px;
    padding: 14px 30px; border-radius: 999px;
    box-shadow: 0 10px 26px rgba(182,213,74,.22);
    transition: transform .2s, background .2s;
  }
  .btn-download:hover { transform: translateY(-2px); background: #c6e35c; }
  .btn-download small { font-weight: 600; font-size: 12px; opacity: .78; }
  .btn-ghost {
    font-size: 14px; color: var(--text-dim);
    padding: 12px 20px; border: 1px solid var(--line); border-radius: 999px;
  }
  .btn-ghost:hover { color: var(--accent); border-color: rgba(182,213,74,.5); }
  .hero-note { font-size: 12.5px; color: #7e8869; margin-top: 16px; }

  .hero-visual { position: relative; display: flex; justify-content: center; gap: 14px; }
  .phone {
    width: 170px; flex: 0 0 auto;
    border-radius: 22px; overflow: hidden;
    border: 2px solid #3b422b;
    box-shadow: 0 24px 48px rgba(0,0,0,.55);
    background: #0c0e08;
  }
  .phone img { width: 100%; aspect-ratio: 3 / 4.15; object-fit: cover; }
  .phone:nth-child(2) { transform: translateY(26px); }
  .phone:nth-child(1) { transform: translateY(-6px) rotate(-2deg); }
  .phone:nth-child(3) { transform: translateY(14px) rotate(2deg); }

  /* ---------- section base ---------- */
  section.block { padding: 62px 0; border-bottom: 1px solid var(--line); }
  .sec-head { margin-bottom: 32px; }
  .sec-tag {
    font-size: 12px; letter-spacing: 2px; color: var(--accent-deep);
    font-weight: 700; margin-bottom: 8px;
  }
  .sec-head h2 { font-size: 24px; line-height: 1.4; font-weight: 800; }
  .sec-head p { color: var(--text-dim); font-size: 15px; margin-top: 10px; max-width: 640px; }

  /* ---------- category ---------- */
  .cat-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
  .cat-item {
    background: var(--bg-soft); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 20px 22px;
    transition: border-color .2s, transform .2s;
  }
  .cat-item:hover { border-color: rgba(182,213,74,.45); transform: translateY(-3px); }
  .cat-item h3 { font-size: 17px; margin-bottom: 6px; }
  .cat-item p { font-size: 14px; color: var(--text-dim); }
  .cat-item .num { font-size: 12px; color: var(--accent-deep); font-weight: 700; letter-spacing: 1px; }

  /* ---------- feature ---------- */
  .feat-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
  .feat {
    background: var(--bg-card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 22px;
  }
  .feat .ico {
    width: 40px; height: 40px; border-radius: 12px;
    background: rgba(182,213,74,.14); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800; margin-bottom: 14px;
  }
  .feat h3 { font-size: 16.5px; margin-bottom: 8px; }
  .feat p { font-size: 14px; color: var(--text-dim); }

  /* ---------- poster wall ---------- */
  .poster-wall {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
  }
  .poster {
    border-radius: 12px; overflow: hidden; border: 1px solid var(--line);
    background: #0c0e08;
  }
  .poster img { width: 100%; aspect-ratio: 3 / 4.1; object-fit: cover; }
  .poster figcaption {
    font-size: 12px; color: var(--text-dim); padding: 8px 10px;
    background: var(--bg-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }

  /* ---------- ranking ---------- */
  .rank-list { display: grid; gap: 12px; }
  .rank-row {
    display: flex; align-items: center; gap: 16px;
    background: var(--bg-soft); border: 1px solid var(--line);
    border-radius: 14px; padding: 14px 18px;
  }
  .rank-no {
    font-size: 19px; font-weight: 800; color: var(--accent-deep);
    min-width: 30px; font-variant-numeric: tabular-nums;
  }
  .rank-row strong { font-size: 15.5px; display: block; }
  .rank-row span { font-size: 13px; color: var(--text-dim); }
  .rank-bar {
    margin-left: auto; height: 6px; width: 70px; border-radius: 99px;
    background: linear-gradient(90deg, var(--accent), rgba(182,213,74,.18));
  }

  /* ---------- steps ---------- */
  .steps { counter-reset: step; display: grid; gap: 18px; }
  .step {
    position: relative; padding-left: 52px;
  }
  .step::before {
    counter-increment: step; content: counter(step);
    position: absolute; left: 0; top: 0;
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(182,213,74,.14); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 15px;
  }
  .step h3 { font-size: 16.5px; margin-bottom: 5px; }
  .step p { font-size: 14px; color: var(--text-dim); }

  /* ---------- reviews ---------- */
  .review-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
  .review {
    background: var(--bg-soft); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 22px;
  }
  .review-stars { color: var(--accent); letter-spacing: 3px; font-size: 13px; margin-bottom: 10px; }
  .review p { font-size: 14.5px; color: #dde4cf; margin-bottom: 14px; }
  .review-meta { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--text-dim); }
  .avatar {
    width: 28px; height: 28px; border-radius: 50%;
    background: rgba(182,213,74,.18); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px;
  }

  /* ---------- faq ---------- */
  .faq-item {
    border-bottom: 1px solid var(--line);
    padding: 18px 0;
  }
  .faq-item h3 { font-size: 16px; margin-bottom: 8px; color: var(--text); }
  .faq-item p { font-size: 14px; color: var(--text-dim); }

  /* ---------- download ---------- */
  .dl-box {
    background: linear-gradient(135deg, #232a19, #171b10);
    border: 1px solid rgba(182,213,74,.3);
    border-radius: 22px; padding: 34px 24px; text-align: center;
  }
  .dl-box h2 { font-size: 23px; margin-bottom: 10px; }
  .dl-box p { color: var(--text-dim); font-size: 14.5px; margin-bottom: 24px; }
  .dl-meta { font-size: 12.5px; color: #7e8869; margin-top: 16px; }

  /* ---------- footer ---------- */
  .site-footer {
    padding: 34px 0 42px; background: #0d0f0a;
    color: #6f7860; font-size: 12.5px; line-height: 1.9;
  }
  .site-footer p { margin-bottom: 4px; }
  .site-footer a { color: #7f8a6c; }
  .site-footer a:hover { color: var(--accent); }
  .footer-time { font-size: 12px; color: #616a53; margin-top: 6px; }

  /* ---------- breakpoints ---------- */
  @media (min-width: 768px) {
    .hero { padding: 62px 0 72px; }
    .hero h1 { font-size: 40px; }
    .hero-grid { grid-template-columns: 1.1fr .9fr; align-items: center; gap: 30px; }
    .phone { width: 158px; }
    .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .feat-grid { grid-template-columns: repeat(2, 1fr); }
    .poster-wall { grid-template-columns: repeat(4, 1fr); }
    .review-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .section.block { padding: 78px 0; }
    .sec-head h2 { font-size: 29px; }
    .nav-links { display: flex; }
  }
  @media (min-width: 1024px) {
    .hero h1 { font-size: 46px; }
    .hero-lead { font-size: 16.5px; }
    .phone { width: 186px; }
    .cat-grid { grid-template-columns: repeat(4, 1fr); }
    .feat-grid { grid-template-columns: repeat(4, 1fr); }
    .poster-wall { grid-template-columns: repeat(5, 1fr); }
    .review-grid { grid-template-columns: repeat(3, 1fr); }
    .dl-box { padding: 48px 40px; }
  }