:root {
      --bg: #03060d;
      --panel: rgba(13, 19, 29, .82);
      --panel-2: rgba(17, 24, 36, .72);
      --line: rgba(98, 125, 171, .28);
      --line-strong: rgba(95, 130, 255, .52);
      --text: #f6f9ff;
      --muted: #9da8ba;
      --blue: #2f82ff;
      --violet: #744cff;
      --cyan: #18c7ff;
      --shadow: 0 24px 80px rgba(0, 40, 140, .26);
      --radius: 18px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      background:
        radial-gradient(circle at 78% 8%, rgba(39, 109, 255, .18), transparent 30%),
        radial-gradient(circle at 22% 20%, rgba(116, 76, 255, .13), transparent 24%),
        linear-gradient(180deg, #02040a 0%, #060a12 45%, #03060c 100%);
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .33;
      background-image:
        linear-gradient(rgba(57, 104, 210, .1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(57, 104, 210, .1) 1px, transparent 1px);
      background-size: 78px 78px;
      mask-image: linear-gradient(180deg, #000 0%, transparent 76%);
      z-index: -2;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 4vw;
      background: rgba(3, 5, 10, .78);
      border-bottom: 1px solid rgba(255,255,255,.08);
      backdrop-filter: blur(18px);
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 27px;
      font-weight: 900;
      letter-spacing: .2px;
      white-space: nowrap;
    }
    .brand-mark {
      display: grid;
      place-items: center;
      width: 42px;
      height: 42px;
      color: #fff;
      font-weight: 900;
      border-radius: 12px 6px 12px 6px;
      background: linear-gradient(135deg, #304dff, #119cff);
      box-shadow: 0 0 30px rgba(50, 110, 255, .42);
    }
    .brand em {
      color: #2f88ff;
      font-style: italic;
    }
    .nav {
      display: flex;
      gap: 42px;
      color: #d4d8e2;
      font-weight: 700;
      font-size: 16px;
    }
    .nav a {
      position: relative;
      padding: 28px 0;
    }
    .nav a::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 8px;
      width: 0;
      height: 4px;
      border-radius: 99px;
      background: linear-gradient(90deg, var(--blue), var(--violet));
      transform: translateX(-50%);
      transition: width .22s ease;
    }
    .nav a:hover,
    .nav a.active { color: #fff; }
    .nav a:hover::after,
    .nav a.active::after { width: 42px; }
    .top-cta,
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 28px;
      border-radius: 8px;
      border: 1px solid var(--line-strong);
      font-weight: 800;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
    }
    .top-cta {
      min-width: 142px;
      background: rgba(4, 8, 16, .72);
      box-shadow: inset 0 0 18px rgba(45, 130, 255, .2);
    }
    .btn.primary {
      min-width: 224px;
      color: #fff;
      background: linear-gradient(135deg, #2d85ff, #744bff);
      border-color: transparent;
      box-shadow: 0 18px 42px rgba(71, 92, 255, .35);
    }
    .btn.ghost {
      min-width: 210px;
      background: rgba(255,255,255,.04);
      border-color: rgba(255,255,255,.18);
      color: #e9eef8;
    }
    .top-cta:hover,
    .btn:hover {
      transform: translateY(-2px);
      border-color: rgba(65, 150, 255, .9);
      box-shadow: 0 20px 52px rgba(45, 112, 255, .28);
    }
    .hero {
      position: relative;
      max-width: none;
      margin: 0;
      min-height: 690px;
      padding: 80px 4vw 54px;
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      align-items: center;
      justify-items: center;
      gap: 30px;
      overflow: hidden;
      background: #000 !important;
    }
    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 240px;
      background: transparent;
      pointer-events: none;
    }
    .hero-copy,
    .hero-visual {
      position: relative;
      z-index: 2;
    }
    .hero-copy {
      width: min(720px, 100%);
      text-align: center;
      justify-self: center;
    }
    .hero h1 {
      margin: 0 0 24px;
      font-size: clamp(26px, 3.4vw, 46px);
      line-height: 1.12;
      letter-spacing: 0;
      font-weight: 900;
      text-shadow: 0 12px 34px rgba(0,0,0,.46);
    }
    .hero h1 span,
    .section-title span { color: var(--blue); }
    .hero p {
      margin: 0 auto 34px;
      max-width: 760px;
      color: #bac2d0;
      font-size: 22px;
      line-height: 1.72;
      font-weight: 500;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
    }
    .hero-visual {
      min-height: 500px;
      display: grid;
      place-items: center;
    }
    .hero-visual::before {
      content: "";
      position: absolute;
      inset: 8% -8% 10% 0;
      background: transparent;
      filter: none;
    }
    .hero-visual img {
      position: relative;
      width: min(820px, 100%);
      filter: drop-shadow(0 36px 60px rgba(19, 84, 210, .28));
    }
    .hero-points {
      position: relative;
      z-index: 3;
      grid-column: 1 / -1;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 34px;
      max-width: 820px;
      margin: -30px auto 0;
    }
    .point {
      display: grid;
      grid-template-columns: 1fr;
      place-items: center;
      gap: 14px;
      padding: 12px 14px;
      color: #dfe7f4;
      text-align: center;
    }
    .ico {
      display: grid;
      place-items: center;
      width: 46px;
      height: 46px;
      border: 1px solid rgba(78, 123, 255, .48);
      border-radius: 13px;
      color: #75a6ff;
      font-size: 24px;
      background: rgba(28, 47, 88, .18);
      box-shadow: inset 0 0 20px rgba(38, 102, 255, .16);
    }
    .point strong { display: block; font-size: 17px; }
    .point span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }
    section {
      max-width: 1470px;
      margin: 0 auto;
      padding: 44px 4vw;
    }
    .section-panel {
      margin-top: 34px;
      margin-bottom: 34px;
      border: 1px solid rgba(93, 132, 210, .18);
      border-radius: 24px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 28px 90px rgba(0, 22, 80, .18);
    }
    .plans-section {
      background:
        radial-gradient(circle at 10% 10%, rgba(113, 72, 255, .16), transparent 28%),
        linear-gradient(145deg, rgba(12, 13, 34, .88), rgba(4, 11, 23, .94));
    }
    .compare-section {
      background:
        radial-gradient(circle at 88% 18%, rgba(24, 199, 255, .12), transparent 24%),
        linear-gradient(145deg, rgba(4, 18, 30, .9), rgba(5, 8, 18, .94));
    }
    .regions-section {
      background:
        linear-gradient(135deg, rgba(11, 17, 37, .94), rgba(3, 15, 29, .92));
    }
    .scenes-section {
      background:
        radial-gradient(circle at 50% 0%, rgba(47, 130, 255, .14), transparent 32%),
        linear-gradient(145deg, rgba(6, 11, 24, .95), rgba(14, 9, 31, .9));
    }
    .faq-section {
      background:
        linear-gradient(145deg, rgba(5, 16, 26, .9), rgba(8, 9, 20, .95));
    }
    .section-title {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 24px;
      margin-bottom: 28px;
      text-align: center;
    }
    .section-title h2 {
      margin: 0;
      font-size: clamp(24px, 2.3vw, 32px);
      line-height: 1.16;
    }
    .section-title p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
    }
    .tabs {
      display: inline-grid;
      grid-template-columns: repeat(3, 1fr);
      min-width: 450px;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 14px;
      overflow: hidden;
      background: rgba(255,255,255,.04);
    }
    .tab {
      min-height: 48px;
      border: 0;
      color: #b6bece;
      background: transparent;
      font-weight: 800;
      cursor: pointer;
    }
    .tab.active,
    .tab:hover {
      color: #fff;
      background: linear-gradient(135deg, var(--blue), var(--violet));
    }
    .plans {
      display: none;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .plans.active { display: grid; }
    .plan-card,
    .region-card,
    .scene-card,
    .stat-card,
    .point,
    .compare table,
    .faq-item {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: linear-gradient(145deg, rgba(18, 26, 39, .92), rgba(8, 13, 22, .88));
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), var(--shadow);
      transition: transform .22s ease, border-color .22s ease, background .22s ease;
    }
    .plan-card::after,
    .scene-card::after,
    .region-card::after {
      content: "";
      position: absolute;
      inset: -120% auto auto -40%;
      width: 45%;
      height: 300%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.16), transparent);
      transform: rotate(24deg);
      transition: left .65s ease;
    }
    .plan-card:hover,
    .region-card:hover,
    .scene-card:hover,
    .stat-card:hover,
    .point:hover,
    .compare table:hover,
    .faq-item:hover {
      transform: translateY(-5px);
      border-color: rgba(70, 135, 255, .6);
      background: linear-gradient(145deg, rgba(22, 34, 54, .95), rgba(8, 14, 26, .9));
    }
    .plan-card:hover::after,
    .scene-card:hover::after,
    .region-card:hover::after { left: 130%; }
    .plan-card {
      min-height: 235px;
      padding: 26px 28px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
      align-items: start;
      text-align: center;
    }
    .badge {
      position: absolute;
      top: 16px;
      left: 16px;
      padding: 5px 13px;
      border-radius: 7px;
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      background: linear-gradient(135deg, #5648ff, #8b48ff);
    }
    .gpu-img {
      width: 158px;
      height: 104px;
      object-fit: contain;
      margin: 6px auto 0;
      filter: drop-shadow(0 16px 20px rgba(0,0,0,.45));
    }
    .plan-main h3 {
      margin: 0 0 8px;
      font-size: 26px;
      line-height: 1.18;
    }
    .plan-main p {
      margin: 0 0 18px;
      color: var(--muted);
      line-height: 1.55;
    }
    .specs {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 0;
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 12px;
      overflow: hidden;
      background: rgba(255,255,255,.03);
    }
    .specs div {
      min-width: 0;
      padding: 12px 14px;
      border-right: 1px solid rgba(255,255,255,.08);
      color: #dce4f1;
      font-size: 13px;
      line-height: 1.35;
      word-break: keep-all;
    }
    .specs div:last-child { border-right: 0; }
    .specs span {
      display: block;
      color: #8792a5;
      font-size: 12px;
      margin-bottom: 5px;
    }
    .price {
      min-width: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      padding-top: 4px;
      text-align: center;
    }
    .price small,
    .price strong { display: none; }
    .link-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-width: 150px;
      min-height: 44px;
      padding: 0 22px;
      border-radius: 10px;
      color: #fff;
      font-weight: 900;
      background: linear-gradient(135deg, #278aff, #6548ff);
      box-shadow: 0 14px 34px rgba(47, 130, 255, .28);
      border: 1px solid rgba(114, 162, 255, .5);
      transition: transform .22s ease, box-shadow .22s ease, filter .22s ease;
    }
    .link-btn:hover {
      transform: translateY(-2px);
      filter: brightness(1.08);
      box-shadow: 0 18px 44px rgba(47, 130, 255, .38);
    }
    .compare table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(6, 11, 19, .82);
    }
    th, td {
      padding: 20px 22px;
      border-right: 1px solid rgba(255,255,255,.09);
      border-bottom: 1px solid rgba(255,255,255,.09);
      color: #b8c1cf;
      text-align: center;
    }
    th {
      color: #fff;
      font-size: 18px;
      background: rgba(255,255,255,.04);
    }
    th:nth-child(2), td:nth-child(2) {
      color: #66a0ff;
      background: linear-gradient(90deg, rgba(33, 111, 255, .22), rgba(111, 65, 255, .12));
    }
    tr:last-child td { border-bottom: 0; }
    th:last-child, td:last-child { border-right: 0; }
    .regions {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .region-card {
      min-height: 218px;
      padding: 28px 26px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      text-align: center;
    }
    .mini-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #fff;
      font-weight: 900;
      font-size: 15px;
      background:
        radial-gradient(circle at 35% 25%, rgba(255,255,255,.28), transparent 28%),
        linear-gradient(135deg, #178dff, #6547ff);
      box-shadow: 0 16px 34px rgba(42, 127, 255, .28), inset 0 0 20px rgba(255,255,255,.08);
    }
    .region-card h3 {
      margin: 0 0 16px;
      font-size: 22px;
    }
    .region-card p {
      margin: 0;
      color: #b9c4d5;
      line-height: 1.85;
      font-size: 15px;
    }
    .scenes {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .scene-card {
      min-height: 196px;
      padding: 30px 28px;
      display: grid;
      grid-template-columns: 72px 1fr;
      align-items: center;
      gap: 22px;
      text-align: left;
    }
    .scene-card .mini-icon {
      margin: 0;
      width: 58px;
      height: 58px;
      border-radius: 18px;
    }
    .scene-card h3 {
      margin: 0 0 16px;
      font-size: 22px;
    }
    .scene-card p {
      margin: 0;
      color: #b9c4d5;
      line-height: 1.85;
      font-size: 15px;
    }
    .about {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 44px;
      align-items: center;
    }
    .about-visual {
      min-height: 430px;
      border-radius: 22px;
      background:
        linear-gradient(135deg, rgba(9, 15, 25, .2), rgba(0,0,0,.2)),
        url("hero.webp") center / cover no-repeat;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }
    .about-visual:hover {
      transform: translateY(-5px);
      border-color: rgba(70, 135, 255, .6);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), var(--shadow);
    }
    .about h2 {
      margin: 0 0 18px;
      font-size: 30px;
      text-align: center;
    }
    .about p {
      color: #b5becd;
      line-height: 1.85;
      font-size: 17px;
    }
    .checks {
      display: grid;
      gap: 15px;
      margin: 24px 0;
    }
    .checks li {
      list-style: none;
      color: #dbe3f0;
    }
    .checks li::before {
      content: "✓";
      display: inline-grid;
      place-items: center;
      width: 22px;
      height: 22px;
      margin-right: 10px;
      border-radius: 50%;
      color: #fff;
      background: linear-gradient(135deg, var(--blue), var(--violet));
    }
    .stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 10px;
    }
    .stat-card {
      min-height: 126px;
      padding: 22px;
      text-align: center;
    }
    .stat-card strong {
      display: block;
      color: var(--blue);
      font-size: 32px;
      margin-bottom: 8px;
    }
    .stat-card span { color: var(--muted); }
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px 20px;
    }
    .faq-item {
      padding: 18px 22px;
    }
    .faq-item summary {
      cursor: pointer;
      color: #f5f7fb;
      font-weight: 800;
      list-style: none;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item p {
      margin: 12px 0 0;
      color: var(--muted);
      line-height: 1.7;
    }
    .cta-band {
      max-width: 1450px;
      margin: 40px auto 24px;
      padding: 52px 58px;
      min-height: 300px;
      display: grid;
      grid-template-columns: 1fr .96fr;
      align-items: center;
      gap: 40px;
      border: 1px solid var(--line-strong);
      border-radius: 22px;
      background:
        linear-gradient(90deg, rgba(5, 10, 18, .86), rgba(8, 17, 36, .5)),
        url("hero.webp") right center / contain no-repeat;
      box-shadow: var(--shadow);
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }
    .cta-band:hover {
      transform: translateY(-5px);
      border-color: rgba(70, 135, 255, .6);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06), var(--shadow);
    }
    .cta-band h2 {
      margin: 0 0 18px;
      font-size: 31px;
      line-height: 1.2;
      text-align: center;
    }
    .cta-band p {
      max-width: 650px;
      color: #c5cedb;
      font-size: 18px;
      line-height: 1.8;
    }
    .footer {
      margin-top: 36px;
      padding: 48px 4vw 26px;
      display: grid;
      grid-template-columns: 1.3fr repeat(4, 1fr);
      gap: 38px;
      border-top: 1px solid rgba(255,255,255,.08);
      background: rgba(4, 8, 14, .88);
    }
    .footer p,
    .footer a {
      color: var(--muted);
      line-height: 1.85;
    }
    .footer a {
      display: block;
      margin-top: 10px;
    }
    .footer a:hover { color: #fff; }
    .footer h3 {
      margin: 0 0 16px;
    }
    .copyright {
      grid-column: 1 / -1;
      padding-top: 22px;
      margin: 12px 0 0;
      text-align: center;
      border-top: 1px solid rgba(255,255,255,.08);
      color: #758196;
    }
    @media (max-width: 1180px) {
      .nav { gap: 18px; font-size: 14px; }
      .hero,
      .about,
      .cta-band { grid-template-columns: 1fr; }
      .plans,
      .scenes { grid-template-columns: repeat(2, 1fr); }
      .plan-card { grid-template-columns: 1fr; }
      .price { text-align: center; }
    }
    @media (max-width: 760px) {
      .site-header { height: auto; padding: 16px 18px; flex-wrap: wrap; gap: 12px; }
      .nav { order: 3; width: 100%; overflow-x: auto; }
      .top-cta { display: none; }
      .hero { padding: 48px 18px 34px; min-height: auto; }
      .hero h1 { font-size: 26px; }
      .hero p { font-size: 17px; }
      .hero-points,
      .plans,
      .regions,
      .scenes,
      .stats,
      .faq-grid,
      .footer { grid-template-columns: 1fr; }
      .tabs { min-width: 0; width: 100%; }
      .plan-card,
      .scene-card { grid-template-columns: 1fr; }
      .scene-card { text-align: center; }
      .scene-card .mini-icon { margin: 0 auto; }
      .section-panel { margin-left: 12px; margin-right: 12px; }
      .footer { padding: 36px 20px 22px; }
    }