:root {
    --bg: #07080d;
    --bg-soft: #0d1018;
    --card: #12161f;
    --neon-pink: #ff2e88;
    --neon-cyan: #00e5ff;
    --neon-purple: #8b5cf6;
    --text: #eaf0ff;
    --text-dim: #9aa5bd;
    --line: rgba(0, 229, 255, 0.18);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background:
      radial-gradient(circle at 12% 8%, rgba(255, 46, 136, 0.20), transparent 42%),
      radial-gradient(circle at 88% 4%, rgba(0, 229, 255, 0.16), transparent 40%),
      radial-gradient(circle at 50% 70%, rgba(139, 92, 246, 0.14), transparent 55%),
      var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }
  .wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }

  /* ===== 顶部导航 ===== */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(7, 8, 13, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; padding: 12px 20px; max-width: 1180px; margin: 0 auto;
  }
  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand img { height: 34px; width: auto; filter: drop-shadow(0 0 8px rgba(255, 46, 136, 0.55)); }
  .brand-name {
    font-size: 20px; font-weight: 800; letter-spacing: 1px;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-cyan));
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .nav-links { display: flex; gap: 20px; flex-wrap: wrap; }
  .nav-links a {
    font-size: 14px; color: var(--text-dim);
    padding: 4px 0; border-bottom: 1px solid transparent;
    transition: color .2s, border-color .2s;
  }
  .nav-links a:hover { color: var(--neon-cyan); border-color: var(--neon-cyan); }
  .header-actions { display: flex; gap: 10px; flex-shrink: 0; }
  .btn {
    display: inline-block; padding: 9px 18px; border-radius: 6px;
    font-size: 14px; font-weight: 700; letter-spacing: .5px;
    transition: transform .2s, box-shadow .2s;
  }
  .btn-android {
    background: linear-gradient(135deg, var(--neon-pink), #b0126a);
    color: #fff; box-shadow: 0 0 16px rgba(255, 46, 136, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.15);
  }
  .btn-ios {
    background: transparent; color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan); box-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
  }
  .btn:hover { transform: translateY(-2px); }

  /* ===== 首屏 ===== */
  .hero { padding: 64px 0 40px; position: relative; }
  .hero-grid {
    display: grid; grid-template-columns: 1.1fr 0.9fr;
    gap: 40px; align-items: center;
  }
  .hero-tag {
    display: inline-block; font-size: 12px; letter-spacing: 2px;
    color: var(--neon-cyan); border: 1px solid var(--neon-cyan);
    padding: 4px 12px; border-radius: 999px; margin-bottom: 20px;
    box-shadow: 0 0 14px rgba(0, 229, 255, 0.28) inset;
  }
  .hero h1 {
    font-size: 44px; line-height: 1.25; font-weight: 900; letter-spacing: 1px;
    margin-bottom: 20px;
  }
  .hero h1 span {
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-purple), var(--neon-cyan));
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .hero p { color: var(--text-dim); font-size: 16px; margin-bottom: 14px; max-width: 520px; }
  .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }
  .hero-cta .btn { padding: 13px 26px; font-size: 15px; }
  .hero-stats { display: flex; gap: 26px; margin-top: 34px; flex-wrap: wrap; }
  .hero-stats div strong {
    display: block; font-size: 22px; color: var(--neon-cyan);
    text-shadow: 0 0 14px rgba(0, 229, 255, 0.5);
  }
  .hero-stats div span { font-size: 12px; color: var(--text-dim); }
  .hero-visual { position: relative; display: flex; justify-content: center; }
  .phone-frame {
    width: 250px; border-radius: 26px; padding: 10px;
    background: linear-gradient(160deg, rgba(255, 46, 136, 0.5), rgba(0, 229, 255, 0.4));
    box-shadow: 0 0 40px rgba(255, 46, 136, 0.35);
  }
  .phone-frame img {
    width: 100%; height: 440px; object-fit: cover; border-radius: 18px;
  }
  .float-tag {
    position: absolute; padding: 6px 14px; font-size: 12px; font-weight: 700;
    border-radius: 999px; background: #0a0d14;
    border: 1px solid var(--neon-pink); color: var(--neon-pink);
    box-shadow: 0 0 16px rgba(255, 46, 136, 0.4);
  }
  .float-tag.t1 { top: 8%; left: -8%; }
  .float-tag.t2 { bottom: 14%; right: -6%; border-color: var(--neon-cyan); color: var(--neon-cyan); }

  /* ===== 区块通用 ===== */
  section { padding: 56px 0; }
  .section-head { margin-bottom: 30px; }
  .section-kicker {
    font-size: 12px; letter-spacing: 3px; color: var(--neon-pink);
    text-transform: uppercase; margin-bottom: 8px;
  }
  .section-head h2 {
    font-size: 28px; font-weight: 800; letter-spacing: .5px;
  }
  .section-head p { color: var(--text-dim); font-size: 14px; margin-top: 8px; }
  .divider {
    height: 1px; width: 100%;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    opacity: .4;
  }

  /* ===== 瀑布流 update ===== */
  .waterfall {
    columns: 3; column-gap: 20px;
  }
  .wf-card {
    break-inside: avoid; margin-bottom: 20px; border-radius: 14px;
    background: var(--card); border: 1px solid var(--line);
    overflow: hidden; transition: transform .25s, box-shadow .25s;
  }
  .wf-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0, 229, 255, 0.12); }
  .wf-card img { width: 100%; object-fit: cover; }
  .wf-card .wf-body { padding: 14px 16px 18px; }
  .wf-card h3 { font-size: 16px; margin-bottom: 6px; }
  .wf-card p { font-size: 13px; color: var(--text-dim); }
  .wf-badge {
    display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 4px;
    background: rgba(255, 46, 136, 0.14); color: var(--neon-pink); margin-bottom: 8px;
    border: 1px solid rgba(255, 46, 136, 0.4);
  }

  /* ===== 追剧日历 ===== */
  .calendar { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; }
  .cal-day {
    background: var(--card); border: 1px solid var(--line); border-radius: 10px;
    padding: 14px 8px; text-align: center; transition: border-color .2s, background .2s;
  }
  .cal-day:hover { border-color: var(--neon-pink); background: rgba(255, 46, 136, 0.08); }
  .cal-day strong { display: block; font-size: 15px; }
  .cal-day span { font-size: 11px; color: var(--text-dim); }
  .cal-day.active { border-color: var(--neon-pink); box-shadow: 0 0 16px rgba(255, 46, 136, 0.3); }
  .cal-day.active strong { color: var(--neon-pink); }

  /* ===== 流程 ===== */
  .flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .flow-step {
    position: relative; background: var(--card); border: 1px solid var(--line);
    border-radius: 14px; padding: 24px 18px;
  }
  .flow-step .num {
    font-size: 30px; font-weight: 900; color: transparent;
    -webkit-text-stroke: 1px var(--neon-cyan); margin-bottom: 10px;
  }
  .flow-step h3 { font-size: 16px; margin-bottom: 8px; }
  .flow-step p { font-size: 13px; color: var(--text-dim); }

  /* ===== 3D 轮播 ===== */
  .carousel-stage {
    perspective: 1200px; display: flex; justify-content: center;
    padding: 30px 0 10px;
  }
  .carousel-3d {
    position: relative; width: 220px; height: 320px;
    transform-style: preserve-3d;
    transform: rotateY(0deg);
    transition: transform .8s cubic-bezier(.4,.1,.2,1);
  }
  .carousel-3d .face {
    position: absolute; inset: 0; border-radius: 14px; overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: 0 0 24px rgba(0, 229, 255, 0.18);
  }
  .carousel-3d .face img { width: 100%; height: 100%; object-fit: cover; }
  .carousel-3d .face:nth-child(1) { transform: rotateY(0deg) translateZ(300px); }
  .carousel-3d .face:nth-child(2) { transform: rotateY(90deg) translateZ(300px); }
  .carousel-3d .face:nth-child(3) { transform: rotateY(180deg) translateZ(300px); }
  .carousel-3d .face:nth-child(4) { transform: rotateY(270deg) translateZ(300px); }
  .carousel-controls { display: flex; justify-content: center; gap: 12px; margin-top: 24px; }
  .carousel-controls button {
    background: transparent; color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan); border-radius: 6px;
    padding: 7px 18px; font-size: 13px; cursor: pointer;
    font-family: inherit; transition: background .2s;
  }
  .carousel-controls button:hover { background: rgba(0, 229, 255, 0.12); }

  /* ===== 弹幕跑马灯 ===== */
  .danmaku-wrap {
    overflow: hidden; white-space: nowrap; position: relative;
    padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    background: rgba(0, 229, 255, 0.03);
  }
  .danmaku-track {
    display: inline-block; padding-left: 100%;
    animation: scroll-left 32s linear infinite;
  }
  .danmaku-track span {
    display: inline-block; margin-right: 42px; font-size: 14px; color: var(--text-dim);
  }
  .danmaku-track span i { color: var(--neon-pink); font-style: normal; margin-right: 6px; }
  @keyframes scroll-left {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
  }

  /* ===== FAQ 折叠 ===== */
  .faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 860px; margin: 0 auto; }
  .faq-item {
    background: var(--card); border: 1px solid var(--line); border-radius: 12px;
    overflow: hidden;
  }
  .faq-q {
    width: 100%; text-align: left; padding: 16px 20px; cursor: pointer;
    background: transparent; color: var(--text); font-size: 15px; font-weight: 700;
    font-family: inherit; border: none; display: flex; justify-content: space-between; gap: 12px;
  }
  .faq-q .arrow { color: var(--neon-cyan); transition: transform .25s; }
  .faq-item.open .faq-q .arrow { transform: rotate(180deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
  .faq-a p { padding: 0 20px 18px; font-size: 14px; color: var(--text-dim); }

  /* ===== 教程 ===== */
  .tutorial { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
  .tutorial-media img {
    width: 100%; border-radius: 16px; border: 1px solid var(--line);
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.2);
  }
  .tutorial-list { display: flex; flex-direction: column; gap: 16px; }
  .tutorial-item { display: flex; gap: 14px; }
  .tutorial-item .dot {
    width: 26px; height: 26px; flex-shrink: 0; border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 800; color: #fff;
  }
  .tutorial-item h3 { font-size: 15px; margin-bottom: 4px; }
  .tutorial-item p { font-size: 13px; color: var(--text-dim); }

  /* ===== 排行榜 ===== */
  .rank-list { display: flex; flex-direction: column; gap: 10px; }
  .rank-row {
    display: flex; align-items: center; gap: 14px;
    background: var(--card); border: 1px solid var(--line); border-radius: 12px;
    padding: 12px 16px; transition: transform .2s, border-color .2s;
  }
  .rank-row:hover { transform: translateX(4px); border-color: var(--neon-pink); }
  .rank-row .r-index {
    font-size: 20px; font-weight: 900; width: 32px; text-align: center;
    color: var(--neon-cyan);
  }
  .rank-row:nth-child(1) .r-index,
  .rank-row:nth-child(2) .r-index,
  .rank-row:nth-child(3) .r-index { color: var(--neon-pink); }
  .rank-row img { width: 54px; height: 74px; object-fit: cover; border-radius: 8px; }
  .rank-row .r-info { flex: 1; min-width: 0; }
  .rank-row .r-info h3 { font-size: 15px; margin-bottom: 3px; }
  .rank-row .r-info p { font-size: 12px; color: var(--text-dim); }
  .rank-row .hot {
    font-size: 11px; padding: 3px 9px; border-radius: 999px;
    background: rgba(255, 46, 136, 0.14); color: var(--neon-pink); white-space: nowrap;
  }

  /* ===== 特色板块：题材地图 & 证书 ===== */
  .theme-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .theme-card {
    background: linear-gradient(160deg, rgba(139, 92, 246, 0.12), rgba(0, 229, 255, 0.06));
    border: 1px solid var(--line); border-radius: 14px; padding: 22px 18px;
    transition: transform .25s, box-shadow .25s;
  }
  .theme-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(0, 229, 255, 0.14); }
  .theme-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--neon-cyan); }
  .theme-card p { font-size: 13px; color: var(--text-dim); }

  .cert-strip {
    display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
    margin-top: 26px;
  }
  .cert-pill {
    font-size: 13px; padding: 9px 20px; border-radius: 999px;
    border: 1px dashed rgba(0, 229, 255, 0.5); color: var(--text-dim);
    background: rgba(0, 229, 255, 0.04);
  }

  /* ===== 截图墙 ===== */
  .gallery-scroll {
    display: flex; gap: 16px; overflow-x: auto; padding: 8px 4px 20px;
    scroll-snap-type: x mandatory;
  }
  .gallery-scroll img {
    flex: 0 0 200px; height: 290px; object-fit: cover; border-radius: 14px;
    scroll-snap-align: start; border: 1px solid var(--line);
  }
  .gallery-scroll::-webkit-scrollbar { height: 6px; }
  .gallery-scroll::-webkit-scrollbar-thumb { background: var(--neon-pink); border-radius: 3px; }

  /* ===== 底部 ===== */
  .site-footer {
    margin-top: 40px; padding: 48px 0 30px;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, transparent, rgba(255, 46, 136, 0.05));
  }
  .footer-search h2 { font-size: 17px; margin-bottom: 16px; color: var(--neon-cyan); }
  .search-cloud {
    display: flex; flex-wrap: wrap; gap: 10px 16px; margin-bottom: 34px;
  }
  .search-cloud a {
    font-size: 12px; color: var(--text-dim); padding: 3px 10px;
    border: 1px solid rgba(154, 165, 189, 0.22); border-radius: 4px;
    transition: color .2s, border-color .2s;
  }
  .search-cloud a:hover { color: var(--neon-pink); border-color: var(--neon-pink); }
  .footer-bottom {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
    padding-top: 22px; border-top: 1px solid rgba(154, 165, 189, 0.14);
    font-size: 12px; color: var(--text-dim);
  }
  .footer-bottom time { color: rgba(154, 165, 189, 0.7); }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .hero h1 { font-size: 36px; }
    .waterfall { columns: 2; }
    .flow { grid-template-columns: repeat(2, 1fr); }
    .theme-grid { grid-template-columns: repeat(2, 1fr); }
    .calendar { grid-template-columns: repeat(4, 1fr); }
  }
  @media (max-width: 768px) {
    .header-inner { flex-wrap: wrap; }
    .nav-links { order: 3; width: 100%; justify-content: center; gap: 14px; padding-top: 8px; }
    .nav-links a { font-size: 13px; }
    .hero { padding: 40px 0 20px; }
    .hero-grid { grid-template-columns: 1fr; gap: 30px; }
    .hero h1 { font-size: 30px; }
    .hero-visual { order: -1; }
    .phone-frame { width: 200px; }
    .phone-frame img { height: 340px; }
    .float-tag { display: none; }
    .waterfall { columns: 1; }
    .calendar { grid-template-columns: repeat(2, 1fr); }
    .flow { grid-template-columns: 1fr; }
    .tutorial { grid-template-columns: 1fr; }
    .theme-grid { grid-template-columns: 1fr; }
    .section-head h2 { font-size: 23px; }
    .hero-stats { gap: 18px; }
    .rank-row .hot { display: none; }
  }