:root {
      --bg: #120d1c;
      --bg-soft: #171024;
      --panel: rgba(26, 18, 38, 0.82);
      --line: rgba(173, 154, 255, 0.14);
      --line-soft: rgba(255,255,255,0.06);
      --text: #f4f5fb;
      --text-soft: #b8b9c9;
      --primary-a: #7c5cff;
      --primary-b: #4fa3ff;
      --container: 1180px;
      --shadow: 0 18px 36px rgba(0, 0, 0, 0.22);
      color-scheme: dark;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      background:
        radial-gradient(circle at 80% 20%, rgba(110, 74, 255, 0.14), transparent 18%),
        radial-gradient(circle at 76% 40%, rgba(88, 145, 255, 0.08), transparent 20%),
        linear-gradient(180deg, #120d1c 0%, #150f20 36%, #171124 72%, #140f20 100%);
      color: var(--text);
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    .container { width: min(var(--container), calc(100% - 28px)); margin: 0 auto; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 60;
      background: rgba(18, 13, 28, 0.76);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line-soft);
      box-shadow: inset 0 -1px 0 rgba(255,255,255,0.02);
    }

    .site-header__inner {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
    .brand img { width: 122px; height: 30px; object-fit: contain; }

    .header-right {
      margin-left: auto;
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 28px;
      flex: 1 1 auto;
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 24px;
      color: var(--text-soft);
      font-size: 15px;
      margin-left: auto;
    }
    .nav a:hover { color: #fff; }

    .lang-switch {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      color: #f3f4fb;
      font-size: 14px;
      font-weight: 600;
      white-space: nowrap;
      transition: .2s ease;
    }

    .lang-switch:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.14); }
    .lang-switch svg { flex: 0 0 auto; }

    .actions { display: flex; align-items: center; gap: 12px; }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-size: 14px;
      font-weight: 700;
      transition: .2s ease;
      white-space: nowrap;
    }

    .button--primary {
      background: linear-gradient(135deg, var(--primary-a), var(--primary-b));
      color: #fff;
      box-shadow: 0 14px 28px rgba(87, 96, 255, 0.22);
    }
    .button--primary:hover { transform: translateY(-1px); }

    .button--secondary {
      background: rgba(255,255,255,0.04);
      border-color: rgba(255,255,255,0.10);
      color: var(--text);
    }
    .button--secondary:hover { background: rgba(255,255,255,0.08); }

    .hero {
      position: relative;
      padding: 84px 0 90px;
      overflow: hidden;
      background:
        linear-gradient(180deg, rgba(20, 15, 30, 1) 0%, rgba(18, 13, 28, 0.96) 8%, rgba(16, 12, 24, 0.88) 14%),
        linear-gradient(90deg, #0a0a0a 0%, #151018 24%, #3a1c71 56%, #241233 100%);
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(24, 18, 36, 0.58) 0%, rgba(24, 18, 36, 0.18) 10%, rgba(24, 18, 36, 0.00) 20%),
        radial-gradient(circle at 76% 34%, rgba(255, 78, 205, 0.18) 0%, rgba(255, 78, 205, 0.07) 14%, rgba(255, 78, 205, 0.00) 34%),
        radial-gradient(circle at 62% 42%, rgba(120, 80, 255, 0.12) 0%, rgba(120, 80, 255, 0.00) 28%);
      pointer-events: none;
    }

    .hero__inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-height: 36px;
      padding: 0 14px;
      border-radius: 999px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      color: #ddd8f2;
      font-size: 13px;
      font-weight: 600;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #8e87ff;
      box-shadow: 0 0 0 8px rgba(142,135,255,0.10);
    }

    .hero h1 {
      margin: 18px 0 0;
      font-size: clamp(42px, 5vw, 66px);
      line-height: 0.98;
      letter-spacing: -0.05em;
      max-width: 720px;
    }

    .hero p {
      margin: 22px 0 0;
      color: var(--text-soft);
      line-height: 1.9;
      font-size: 16px;
      max-width: 620px;
    }

    .hero__actions {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-card {
      width: min(100%, 540px);
      border-radius: 32px;
      border: 1px solid rgba(173, 154, 255, 0.10);
      background:
        radial-gradient(circle at 36% 34%, rgba(122, 86, 255, 0.10), rgba(122, 86, 255, 0.00) 32%),
        radial-gradient(circle at 70% 58%, rgba(80, 154, 255, 0.06), rgba(80, 154, 255, 0.00) 28%),
        linear-gradient(180deg, rgba(22, 16, 34, 0.46) 0%, rgba(14, 10, 22, 0.20) 100%);
      box-shadow: 0 14px 28px rgba(12, 8, 24, 0.12);
      backdrop-filter: blur(8px);
      padding: 24px;
    }

    .hero-card__title {
      margin: 0;
      font-size: 22px;
      letter-spacing: -0.03em;
    }

    .hero-card__desc {
      margin: 10px 0 0;
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.85;
    }

    .hero-card__list {
      margin-top: 18px;
      display: grid;
      gap: 12px;
    }

    .hero-card__item {
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.04);
      padding: 14px 16px;
      color: #fff;
      font-size: 14px;
      line-height: 1.7;
    }

    .section { padding: 38px 0; }
    .section__header { margin-bottom: 18px; }
    .section__title {
      margin: 0;
      font-size: 30px;
      line-height: 1.16;
      letter-spacing: -0.04em;
    }
    .section__description {
      margin: 10px 0 0;
      color: var(--text-soft);
      font-size: 15px;
      line-height: 1.9;
      max-width: 760px;
    }

    .card-grid {
      display: grid;
      gap: 18px;
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .about-card {
      border-radius: 26px;
      border: 1px solid rgba(173, 154, 255, 0.12);
      background:
        radial-gradient(circle at 18% 16%, rgba(132, 98, 255, 0.10), rgba(132, 98, 255, 0.00) 30%),
        linear-gradient(180deg, rgba(43, 24, 58, 0.72) 0%, rgba(24, 17, 38, 0.86) 100%);
      box-shadow: var(--shadow);
      padding: 22px;
      min-height: 210px;
    }

    .about-card__icon,
    .principle-card__icon {
      width: 64px;
      height: 64px;
      border-radius: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      margin-bottom: 16px;
      border: 1px solid rgba(169, 148, 255, 0.18);
      background: linear-gradient(135deg, rgba(127, 91, 255, 0.16), rgba(63, 166, 255, 0.08));
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), 0 0 24px rgba(96, 98, 255, 0.10);
    }

    .about-card__icon::before,
    .principle-card__icon::before {
      content: "";
      position: absolute;
      inset: 10%;
      border-radius: 18px;
      background: radial-gradient(circle at 30% 30%, rgba(145, 109, 255, 0.22), rgba(80, 170, 255, 0.08) 52%, rgba(80, 170, 255, 0) 78%);
      filter: blur(10px);
      z-index: 0;
    }

    .about-card__icon svg,
    .principle-card__icon svg {
      width: 34px;
      height: 34px;
      position: relative;
      z-index: 1;
    }

    .about-card__title {
      margin: 0;
      font-size: 22px;
      letter-spacing: -0.03em;
    }

    .about-card__description {
      margin: 12px 0 0;
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.9;
    }

    .principles-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .principle-card {
      border-radius: 26px;
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      padding: 22px;
      box-shadow: 0 16px 30px rgba(0,0,0,0.18);
      min-height: 200px;
    }

    .principle-card__eyebrow {
      display: inline-flex;
      min-height: 30px;
      align-items: center;
      padding: 0 12px;
      border-radius: 999px;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.08);
      color: #ddd8f2;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .principle-card__title {
      margin: 0;
      font-size: 22px;
      letter-spacing: -0.03em;
    }

    .principle-card__description {
      margin: 12px 0 0;
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.9;
    }

    .support-box {
      border-radius: 28px;
      border: 1px solid rgba(173, 154, 255, 0.14);
      background: linear-gradient(135deg, rgba(122,118,255,0.12) 0%, rgba(98,158,255,0.08) 100%);
      box-shadow: 0 22px 44px rgba(0, 0, 0, 0.22);
      padding: 28px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 20px;
      align-items: center;
    }

    .support-box__title {
      margin: 0;
      font-size: 30px;
      line-height: 1.16;
      letter-spacing: -0.04em;
    }

    .support-box__description {
      margin: 12px 0 0;
      color: var(--text-soft);
      font-size: 15px;
      line-height: 1.9;
      max-width: 760px;
    }

    .footer {
      padding: 20px 0 34px;
    }

    .footer__box {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding: 28px 0 0;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 24px;
    }

    .footer__column-title {
      margin: 0 0 14px;
      font-size: 16px;
      color: #fff;
      letter-spacing: -0.02em;
    }

    .footer__links {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 12px;
    }

    .footer__links a,
    .footer__links span,
    .footer__text {
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.8;
    }

    .footer__links a:hover { color: #fff; }
    .footer__text { max-width: 260px; }

    @media (max-width: 1080px) {
      .hero__inner,
      .support-box,
      .footer__box,
      .card-grid,
      .principles-grid {
        grid-template-columns: 1fr;
      }

      .header-right,
      .nav,
      .lang-switch,
      .actions { display: none; }
    }

    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 20px)); }
      .hero { padding-top: 56px; }
    }