:root {
    --bg-deep: #050a17;
    --bg-panel: #0c1526;
    --bg-card: #101c30;
    --brand: #25e0a0;
    --brand-dim: #1a9b72;
    --accent: #4b8dff;
    --text-main: #eaf2ff;
    --text-sub: #8fa3bd;
    --border: rgba(75, 141, 255, 0.18);
    --radius: 14px;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  ul { list-style: none; }

  /* ===== Header ===== */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(5, 10, 23, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  .header-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 12px 20px;
    display: flex; align-items: center; justify-content: space-between;
  }
  .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: 0.5px; }
  .brand img { height: 34px; width: auto; object-fit: contain; }
  .nav-links { display: flex; gap: 26px; font-size: 14px; color: var(--text-sub); }
  .nav-links a { transition: color .25s; }
  .nav-links a:hover { color: var(--brand); }
  .header-cta {
    font-size: 13px; padding: 8px 18px; border-radius: 30px;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    color: #03121c; font-weight: 700;
  }
  .nav-toggle {
    display: none; background: none; border: 1px solid var(--border);
    color: var(--text-main); font-size: 18px; padding: 4px 12px; border-radius: 8px; cursor: pointer;
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 88vh;
    display: flex; align-items: center;
    overflow: hidden;
    padding: 70px 20px 90px;
  }
  .hero-bg {
    position: absolute; inset: 0; z-index: 0;
  }
  .hero-bg img {
    width: 100%; height: 100%; object-fit: cover;
    opacity: 0.55;
    animation: heroFloat 18s ease-in-out infinite alternate;
  }
  @keyframes heroFloat {
    from { transform: scale(1) translateY(0); }
    to { transform: scale(1.06) translateY(-14px); }
  }
  .hero-glow {
    position: absolute; width: 620px; height: 620px; border-radius: 50%;
    background: radial-gradient(circle, rgba(37,224,160,0.22), transparent 68%);
    top: -140px; right: -160px; z-index: 0;
    animation: glowPulse 9s ease-in-out infinite alternate;
  }
  @keyframes glowPulse {
    from { opacity: .55; transform: scale(1); }
    to { opacity: .9; transform: scale(1.12); }
  }
  .hero-content {
    position: relative; z-index: 2;
    max-width: 1200px; margin: 0 auto; width: 100%;
  }
  .hero-tag {
    display: inline-block; font-size: 13px; letter-spacing: 2px;
    color: var(--brand); border: 1px solid rgba(37,224,160,0.4);
    padding: 4px 14px; border-radius: 30px; margin-bottom: 22px;
  }
  .hero h1 {
    font-size: clamp(28px, 4.6vw, 54px);
    line-height: 1.25; font-weight: 800;
    max-width: 760px;
    background: linear-gradient(100deg, #ffffff 20%, #7cf0c8 65%, #6aa8ff 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .hero-sub {
    margin-top: 20px; max-width: 560px;
    font-size: clamp(14px, 1.6vw, 17px); color: var(--text-sub);
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 30px; border-radius: 40px; font-size: 15px; font-weight: 700;
    transition: transform .25s, box-shadow .25s, opacity .25s;
    cursor: pointer; border: none;
  }
  .btn:hover { transform: translateY(-3px); }
  .btn-primary {
    background: linear-gradient(135deg, var(--brand) 0%, #2fbfe8 100%);
    color: #03121c; box-shadow: 0 10px 30px rgba(37,224,160,0.3);
  }
  .btn-primary:hover { box-shadow: 0 16px 38px rgba(37,224,160,0.45); }
  .btn-ghost {
    background: rgba(255,255,255,0.06); color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.22);
  }
  .btn-ghost:hover { background: rgba(255,255,255,0.12); }
  .hero-stats {
    display: flex; flex-wrap: wrap; gap: 40px;
    margin-top: 52px; padding-top: 26px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .stat-item strong { display: block; font-size: 21px; color: var(--brand); font-weight: 800; }
  .stat-item span { font-size: 13px; color: var(--text-sub); }

  /* ===== Section Common ===== */
  section { padding: 82px 20px; }
  .container { max-width: 1200px; margin: 0 auto; }
  .sec-head { margin-bottom: 44px; }
  .sec-head h2 {
    font-size: clamp(23px, 3vw, 34px); font-weight: 800; letter-spacing: 0.5px;
  }
  .sec-head p { margin-top: 12px; color: var(--text-sub); font-size: 15px; max-width: 620px; }
  .sec-head.center { text-align: center; }
  .sec-head.center p { margin-left: auto; margin-right: auto; }

  /* ===== Carousel ===== */
  .carousel-section { padding-top: 0; }
  .carousel {
    position: relative; border-radius: 20px; overflow: hidden;
    aspect-ratio: 16 / 9; max-height: 560px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
  }
  .slides { display: flex; height: 100%; transition: transform .6s cubic-bezier(.33,.9,.3,1); }
  .slide { min-width: 100%; position: relative; height: 100%; }
  .slide img { width: 100%; height: 100%; object-fit: cover; }
  .slide-mask {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(3,8,18,0.92) 0%, rgba(3,8,18,0.55) 45%, transparent 85%),
                linear-gradient(0deg, rgba(3,8,18,0.85) 0%, transparent 50%);
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: clamp(20px, 4vw, 52px);
  }
  .slide-mask h3 { font-size: clamp(20px, 3.2vw, 38px); font-weight: 800; }
  .slide-mask p { color: #c7d8ee; margin-top: 10px; max-width: 460px; font-size: clamp(13px, 1.4vw, 15px); }
  .slide-mask .btn { margin-top: 20px; padding: 11px 24px; font-size: 14px; align-self: flex-start; }
  .car-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 42px; height: 42px; border-radius: 50%;
    background: rgba(10,22,40,0.7); border: 1px solid rgba(255,255,255,0.22);
    color: #fff; font-size: 18px; cursor: pointer; z-index: 5;
    display: flex; align-items: center; justify-content: center;
    transition: background .25s;
  }
  .car-btn:hover { background: rgba(37,224,160,0.35); }
  .car-prev { left: 16px; }
  .car-next { right: 16px; }
  .car-dots {
    position: absolute; bottom: 18px; right: 24px; display: flex; gap: 8px; z-index: 5;
  }
  .car-dots span {
    width: 9px; height: 9px; border-radius: 50%;
    background: rgba(255,255,255,0.35); cursor: pointer; transition: all .3s;
  }
  .car-dots span.active { background: var(--brand); width: 24px; border-radius: 6px; }

  /* ===== Feature cards ===== */
  .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .feature-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 30px 24px;
    transition: transform .3s, border-color .3s, box-shadow .3s;
  }
  .feature-card:hover {
    transform: translateY(-8px); border-color: rgba(37,224,160,0.45);
    box-shadow: 0 20px 40px rgba(0,0,0,0.45);
  }
  .feature-icon {
    width: 46px; height: 46px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 800; color: #03121c;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    margin-bottom: 18px;
  }
  .feature-card h3 { font-size: 17px; margin-bottom: 10px; }
  .feature-card p { font-size: 14px; color: var(--text-sub); }

  /* ===== Chart / category ===== */
  .channel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .channel-card {
    position: relative; border-radius: var(--radius); overflow: hidden;
    aspect-ratio: 3 / 4; border: 1px solid var(--border);
  }
  .channel-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .channel-card:hover img { transform: scale(1.07); }
  .channel-info {
    position: absolute; inset: auto 0 0 0;
    padding: 40px 16px 16px;
    background: linear-gradient(0deg, rgba(3,8,18,0.96), transparent);
  }
  .channel-info strong { display: block; font-size: 16px; }
  .channel-info span { font-size: 12px; color: var(--text-sub); }

  /* ===== Series grid ===== */
  .series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
  .series-card {
    background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border);
    transition: transform .3s, box-shadow .3s;
  }
  .series-card:hover { transform: translateY(-9px); box-shadow: 0 22px 44px rgba(0,0,0,0.5); }
  .poster-wrap { position: relative; aspect-ratio: 3 / 4; overflow: hidden; }
  .poster-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .series-card:hover .poster-wrap img { transform: scale(1.08); }
  .badge {
    position: absolute; top: 10px; left: 10px; z-index: 2;
    font-size: 11px; padding: 3px 10px; border-radius: 20px; font-weight: 700;
  }
  .badge-hot { background: linear-gradient(135deg,#ff5a6a,#ff8a3d); color: #fff; }
  .badge-up { background: rgba(37,224,160,0.92); color: #03121c; }
  .poster-play {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    background: rgba(3,8,18,0.35); opacity: 0; transition: opacity .3s;
  }
  .series-card:hover .poster-play { opacity: 1; }
  .poster-play span {
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(37,224,160,0.9); color: #03121c;
    display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800;
  }
  .series-body { padding: 14px 16px 18px; }
  .series-body h3 { font-size: 15px; margin-bottom: 6px; }
  .series-body p { font-size: 12.5px; color: var(--text-sub); }

  /* ===== Preview (screenshots) ===== */
  .preview-block {
    display: grid; grid-template-columns: 320px 1fr; gap: 34px; align-items: center;
    background: var(--bg-panel); border: 1px solid var(--border);
    border-radius: 20px; padding: 28px; margin-bottom: 28px;
  }
  .preview-cover { border-radius: 14px; overflow: hidden; aspect-ratio: 3 / 4; }
  .preview-cover img { width: 100%; height: 100%; object-fit: cover; }
  .preview-info h3 { font-size: 24px; margin-bottom: 12px; }
  .preview-info p { color: var(--text-sub); font-size: 14.5px; margin-bottom: 18px; }
  .progress-line { height: 7px; border-radius: 6px; background: rgba(255,255,255,0.1); overflow: hidden; margin-bottom: 10px; }
  .progress-line i { display: block; height: 100%; width: 68%; background: linear-gradient(90deg,var(--brand),var(--accent)); }
  .preview-meta { font-size: 12.5px; color: var(--text-sub); }
  .shot-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 22px; }
  .shot-row img { border-radius: 10px; aspect-ratio: 3 / 4; object-fit: cover; width: 100%; }

  /* ===== Character / role ===== */
  .role-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .role-card { border-radius: var(--radius); overflow: hidden; position: relative; aspect-ratio: 4 / 5; border: 1px solid var(--border); }
  .role-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .role-card:hover img { transform: scale(1.06); }
  .role-info {
    position: absolute; inset: auto 0 0 0; padding: 34px 16px 14px;
    background: linear-gradient(0deg, rgba(3,8,18,0.95), transparent);
  }
  .role-info strong { font-size: 15px; }
  .role-info span { display: block; font-size: 12px; color: var(--brand); }

  /* ===== Ranking ===== */
  .rank-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .rank-item {
    display: flex; gap: 14px; align-items: center;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 14px; padding: 12px;
    transition: transform .3s, border-color .3s;
  }
  .rank-item:hover { transform: translateX(5px); border-color: rgba(37,224,160,0.5); }
  .rank-no {
    font-size: 26px; font-weight: 900; font-style: italic; width: 34px; text-align: center;
    color: var(--text-sub);
  }
  .rank-item.top .rank-no {
    color: #ffca3a;
    text-shadow: 0 0 18px rgba(255,202,58,0.7);
    animation: rankPulse 2.4s ease-in-out infinite alternate;
  }
  .rank-item.top { border-color: rgba(255,202,58,0.4); background: linear-gradient(120deg, rgba(255,202,58,0.07), var(--bg-card)); }
  @keyframes rankPulse {
    from { text-shadow: 0 0 10px rgba(255,202,58,0.4); }
    to { text-shadow: 0 0 22px rgba(255,202,58,0.9); }
  }
  .rank-thumb { width: 52px; height: 70px; border-radius: 8px; overflow: hidden; flex: none; }
  .rank-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .rank-text strong { display: block; font-size: 14px; }
  .rank-text em { font-style: normal; font-size: 12px; color: var(--brand); }

  /* ===== Calendar ===== */
  .calendar-list { display: grid; gap: 12px; }
  .cal-row {
    display: grid; grid-template-columns: 90px 52px 1fr auto; gap: 16px;
    align-items: center; background: var(--bg-card);
    border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px;
  }
  .cal-day { font-size: 13px; color: var(--brand); font-weight: 700; }
  .cal-thumb { width: 44px; height: 60px; border-radius: 6px; overflow: hidden; }
  .cal-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .cal-name { font-size: 14px; }
  .cal-time { font-size: 12.5px; color: var(--text-sub); }

  /* ===== Devices ===== */
  .device-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: center; }
  .device-shot {
    border-radius: 20px; overflow: hidden; border: 1px solid var(--border);
    background: var(--bg-panel);
  }
  .device-shot img { width: 100%; height: 100%; object-fit: cover; }
  .download-note { color: var(--text-sub); font-size: 14.5px; margin-bottom: 24px; }
  .download-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
  .dl-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 22px 18px; text-align: center;
    transition: transform .3s, border-color .3s;
  }
  .dl-card:hover { transform: translateY(-6px); border-color: rgba(37,224,160,0.45); }
  .dl-card strong { display: block; font-size: 15px; margin-bottom: 6px; }
  .dl-card span { font-size: 12.5px; color: var(--text-sub); display: block; margin-bottom: 16px; }
  .dl-card .btn { width: 100%; padding: 10px 12px; font-size: 13px; }

  /* ===== Review wall ===== */
  .review-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .review-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 14px; padding: 18px; font-size: 13.5px;
    transition: transform .3s, border-color .3s;
  }
  .review-card:hover { transform: translateY(-6px); border-color: rgba(75,141,255,0.45); }
  .review-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
  .review-avatar { width: 34px; height: 34px; border-radius: 50%; overflow: hidden; flex: none; }
  .review-avatar img { width: 100%; height: 100%; object-fit: cover; }
  .review-name { font-size: 13px; font-weight: 700; }
  .review-stars { color: #ffca3a; font-size: 12px; letter-spacing: 1px; }
  .review-card p { color: #c3d2e6; }

  /* ===== Story ===== */
  .story-block {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
    background: linear-gradient(135deg, var(--bg-panel), #081120);
    border: 1px solid var(--border); border-radius: 22px; padding: 44px;
  }
  .story-block h2 { font-size: clamp(22px, 2.6vw, 32px); margin-bottom: 16px; }
  .story-block p { color: var(--text-sub); font-size: 15px; margin-bottom: 14px; }
  .slogan {
    display: inline-block; margin-top: 10px; font-size: 16px; font-weight: 700;
    color: var(--brand); border-left: 3px solid var(--brand); padding-left: 14px;
  }
  .story-img { border-radius: 16px; overflow: hidden; aspect-ratio: 3 / 4; }
  .story-img img { width: 100%; height: 100%; object-fit: cover; }

  /* ===== FAQ ===== */
  .faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 12px; }
  .faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
  .faq-q {
    width: 100%; text-align: left; background: none; border: none; color: var(--text-main);
    font-size: 15px; font-weight: 600; padding: 18px 20px; cursor: pointer;
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    font-family: inherit;
  }
  .faq-q::after { content: "+"; color: var(--brand); font-size: 18px; transition: transform .3s; }
  .faq-item.open .faq-q::after { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
  .faq-a p { padding: 0 20px 18px; color: var(--text-sub); font-size: 14px; }

  /* ===== Footer ===== */
  .site-footer {
    border-top: 1px solid rgba(255,255,255,0.07);
    padding: 46px 20px 30px; font-size: 12.5px; color: #5f7086;
  }
  .footer-inner { max-width: 1200px; margin: 0 auto; }
  .footer-top { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; margin-bottom: 30px; }
  .footer-brand { display: flex; align-items: center; gap: 10px; color: #9db1c9; font-weight: 700; font-size: 15px; }
  .footer-brand img { height: 26px; }
  .footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
  .footer-nav a:hover { color: var(--brand); }
  .footer-keywords { margin-bottom: 20px; line-height: 2; color: #4d5d72; }
  .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 18px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; }
  .footer-bottom a { color: #6b7f97; }
  .footer-bottom a:hover { color: var(--brand); }

  /* ===== Responsive 1024 ===== */
  @media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .channel-grid { grid-template-columns: repeat(2, 1fr); }
    .series-grid { grid-template-columns: repeat(3, 1fr); }
    .role-grid { grid-template-columns: repeat(2, 1fr); }
    .rank-list { grid-template-columns: repeat(2, 1fr); }
    .review-wall { grid-template-columns: repeat(2, 1fr); }
    .device-wrap { grid-template-columns: 1fr; }
    .download-cols { grid-template-columns: repeat(3, 1fr); }
    .preview-block { grid-template-columns: 240px 1fr; }
  }

  /* ===== Responsive 768 ===== */
  @media (max-width: 768px) {
    section { padding: 56px 16px; }
    .header-inner { padding: 10px 16px; }
    .nav-toggle { display: block; }
    .nav-links {
      position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; gap: 0;
      background: rgba(5,10,23,0.98);
      border-bottom: 1px solid var(--border);
      max-height: 0; overflow: hidden; transition: max-height .35s ease;
    }
    .nav-links.open { max-height: 360px; }
    .nav-links a { padding: 14px 20px; border-top: 1px solid rgba(255,255,255,0.06); }
    .header-cta { display: none; }
    .hero { min-height: auto; padding: 54px 16px 66px; }
    .hero-stats { gap: 24px; margin-top: 36px; }
    .hero-actions .btn { flex: 1 1 auto; padding: 13px 20px; }
    .feature-grid, .channel-grid, .series-grid, .role-grid, .rank-list, .review-wall, .download-cols { grid-template-columns: repeat(2, 1fr); }
    .preview-block { grid-template-columns: 1fr; padding: 20px; }
    .shot-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .cal-row { grid-template-columns: 70px 44px 1fr; gap: 10px; }
    .cal-time { grid-column: 2 / 4; font-size: 12px; }
    .story-block { grid-template-columns: 1fr; padding: 26px; }
    .car-btn { width: 34px; height: 34px; font-size: 15px; }
    .slide-mask .btn { padding: 9px 18px; font-size: 13px; }
    .footer-top { flex-direction: column; gap: 18px; }
  }
  @media (max-width: 480px) {
    .feature-grid, .series-grid, .role-grid, .rank-list, .review-wall, .download-cols { grid-template-columns: 1fr; }
    .channel-grid { grid-template-columns: repeat(2, 1fr); }
    .series-grid { grid-template-columns: repeat(2, 1fr); }
    .preview-block { gap: 20px; }
  }