:root {
      --ink: #101114;
      --muted: #686d76;
      --line: #eceef1;
      --surface: #ffffff;
      --font-caption: 13px;
      --font-body: 16px;
      --font-lead: 16px;
      --font-hero: 50px;
      font-family:
        "Source Han Sans SC",
        "Source Han Sans CN",
        "Source Han Sans",
        "Noto Sans SC",
        "PingFang SC",
        "Microsoft YaHei",
        system-ui,
        sans-serif;
      color: var(--ink);
      background: var(--surface);
      font-synthesis: none;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

* {
      box-sizing: border-box;
    }

[hidden] {
      display: none !important;
    }

html {
      scroll-behavior: smooth;
    }

[id] {
      scroll-margin-top: 96px;
    }

body {
      min-width: 320px;
      min-height: 100vh;
      margin: 0;
      overflow-x: hidden;
      background: var(--surface);
    }

a {
      color: inherit;
    }

.topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(16px);
    }

.site-announcement {
      min-height: 46px;
      padding: 0 24px;
      border-bottom: 1px solid #e4e6e9;
      color: #292c31;
      background: #f7f8fa;
    }

.site-announcement-inner {
      display: flex;
      width: min(100%, 1360px);
      min-height: 46px;
      margin: 0 auto;
      align-items: center;
      justify-content: center;
      gap: 12px;
    }

.site-announcement-badge {
      display: inline-flex;
      flex: 0 0 auto;
      height: 22px;
      padding: 0 8px;
      border-radius: 4px;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: #111214;
      font-size: 12px;
      font-weight: 650;
      line-height: 1;
    }

.site-announcement-text {
      min-width: 0;
      font-size: 13px;
      font-weight: 550;
      line-height: 1.65;
      text-align: left;
    }

.site-announcement-highlight {
      font-weight: 750;
    }

.site-announcement-highlight.is-release {
      color: #c9364d;
    }

.site-announcement-highlight.is-capability {
      color: #2167d9;
    }

.site-announcement-highlight.is-platform {
      color: #00846a;
    }

.site-load-error {
      min-height: 42px;
      padding: 10px 24px;
      border-bottom: 1px solid #f0c9cd;
      color: #a72f3a;
      background: #fff5f6;
      font-size: 13px;
      font-weight: 650;
      line-height: 21px;
      text-align: center;
    }

.section-load-message {
      width: min(760px, calc(100% - 36px));
      min-height: 58px;
      margin: 38px auto 0;
      padding: 17px 20px;
      border: 1px solid #e1e4e8;
      border-radius: 8px;
      color: #686d76;
      background: #f8f9fa;
      font-size: 14px;
      font-weight: 550;
      line-height: 1.65;
      text-align: center;
    }

.section-load-message.is-error {
      border-color: #efc9cd;
      color: #a72f3a;
      background: #fff7f8;
    }

.website-loading .release-entry,
.website-loading .case-gallery,
.website-loading .help-list,
.website-loading .about-layout,
.website-loading .about-principles,
.website-loading .compatibility-notice,
.website-loading .package-grid,
.website-loading .download-guide {
      visibility: hidden;
      pointer-events: none;
    }

.topbar-inner {
      width: min(1360px, calc(100% - 48px));
      min-height: 72px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 32px;
      animation: topbarEnter 560ms 40ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
    }

.brand {
      width: max-content;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      text-decoration: none;
      white-space: nowrap;
    }

.brand-logo {
      width: 34px;
      height: 34px;
      display: block;
      border-radius: 8px;
      object-fit: cover;
      box-shadow: 0 5px 14px rgba(16, 17, 20, 0.12);
    }

.brand-name {
      font-size: var(--font-body);
      font-weight: 700;
      line-height: 1;
    }

.topnav {
      display: flex;
      align-items: stretch;
      align-self: stretch;
      gap: 30px;
    }

.topnav a {
      position: relative;
      display: grid;
      place-items: center;
      color: #555b65;
      font-size: 14px;
      font-weight: 600;
      line-height: 1;
      text-decoration: none;
      white-space: nowrap;
      transition: color 160ms ease;
    }

.topnav a::after {
      position: absolute;
      right: 50%;
      bottom: 0;
      left: 50%;
      height: 2px;
      background: var(--ink);
      content: "";
      transition: right 160ms ease, left 160ms ease;
    }

.topnav a:hover,
.topnav a:focus-visible {
      color: var(--ink);
    }

.topnav a:hover::after,
.topnav a:focus-visible::after {
      right: 0;
      left: 0;
    }

.topbar-actions {
      display: flex;
      justify-content: flex-end;
    }

.download-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      background: #101114;
      text-decoration: none;
      min-width: 212px;
      height: 44px;
      gap: 10px;
      padding: 0 18px;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 750;
      line-height: 1;
      box-shadow: 0 14px 30px rgba(16, 17, 20, 0.18);
      transition: transform 180ms ease, box-shadow 180ms ease;
    }

.topbar-download {
      width: auto;
      min-width: 0;
      height: 38px;
      gap: 7px;
      padding: 0 15px;
      font-size: var(--font-caption);
      font-weight: 700;
      box-shadow: 0 9px 20px rgba(16, 17, 20, 0.16);
    }

.download-icon {
      width: 16px;
      height: 16px;
      flex: 0 0 auto;
      fill: none;
      stroke: currentColor;
      stroke-linecap: round;
      stroke-linejoin: round;
      stroke-width: 2;
    }

.download-button small {
      padding-left: 10px;
      border-left: 1px solid rgba(255, 255, 255, 0.26);
      color: rgba(255, 255, 255, 0.70);
      font-size: var(--font-caption);
      font-weight: 600;
    }

.download-button:hover,
.download-button:focus-visible {
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(16, 17, 20, 0.22);
    }

.section-heading {
      max-width: 760px;
      margin: 0 auto;
      text-align: center;
    }

.section-title {
      margin: 0;
      color: #08090b;
      font-size: 34px;
      font-weight: 760;
      line-height: 1.3;
      letter-spacing: 0;
    }

.section-lead {
      margin: 14px auto 0;
      color: var(--muted);
      font-size: 15px;
      font-weight: 450;
      line-height: 1.8;
    }

.site-footer {
      border-top: 1px solid #dfe3e8;
      background: #ffffff;
    }

.footer-inner {
      width: min(1200px, calc(100% - 48px));
      margin: 0 auto;
      padding: 52px 0 30px;
    }

.footer-main {
      display: grid;
      grid-template-columns: minmax(280px, 1.5fr) repeat(3, minmax(120px, 0.5fr));
      gap: 48px;
    }

.footer-brand {
      min-width: 0;
    }

.footer-brand-name {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: #101114;
      font-size: 18px;
      font-weight: 750;
      line-height: 1.3;
      text-decoration: none;
    }

.footer-brand-logo {
      width: 38px;
      height: 38px;
      flex: 0 0 auto;
      display: block;
      border-radius: 8px;
      object-fit: cover;
      box-shadow: 0 5px 14px rgba(16, 17, 20, 0.12);
    }

.footer-description {
      max-width: 390px;
      margin: 16px 0 0;
      color: #6a707a;
      font-size: 14px;
      font-weight: 450;
      line-height: 1.8;
    }

.footer-version {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #8a8f98;
      font-size: 12px;
      font-weight: 650;
      line-height: 1.4;
    }

.footer-version::before {
      width: 6px;
      height: 6px;
      flex: 0 0 auto;
      border-radius: 50%;
      background: #008d65;
      content: "";
    }

.footer-nav-group {
      min-width: 0;
    }

.footer-nav-title {
      margin: 0;
      color: #202328;
      font-size: 13px;
      font-weight: 750;
      line-height: 1.4;
    }

.footer-nav-links {
      margin-top: 16px;
      display: grid;
      justify-items: start;
      gap: 12px;
    }

.footer-nav-links a {
      color: #747a84;
      font-size: 13px;
      font-weight: 500;
      line-height: 1.5;
      text-decoration: none;
      transition: color 160ms ease;
    }

.footer-nav-links a:hover,
.footer-nav-links a:focus-visible {
      color: #2167d9;
    }

.footer-bottom {
      margin-top: 42px;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      border-top: 1px solid #eceef1;
      color: #969ba3;
      font-size: 12px;
      font-weight: 500;
      line-height: 1.6;
    }

html.motion-ready [data-reveal] {
      opacity: 0;
      transform: translate3d(0, 22px, 0);
      transition:
        opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1) var(--reveal-delay, 0ms),
        transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1) var(--reveal-delay, 0ms);
      will-change: opacity, transform;
    }

html.motion-ready [data-reveal].is-visible {
      opacity: 1;
      transform: translate3d(0, 0, 0);
    }

html.motion-ready [data-reveal].reveal-complete {
      will-change: auto;
    }

@media (max-width: 860px) {
  :root {
          --font-hero: 42px;
        }

  .topbar-inner {
          width: min(100% - 32px, 1360px);
          grid-template-columns: 1fr auto;
        }

  .topnav {
          display: none;
        }

  .footer-inner {
          width: min(100% - 40px, 1200px);
        }

  .footer-main {
          grid-template-columns: repeat(3, minmax(0, 1fr));
          gap: 36px;
        }

  .footer-brand {
          grid-column: 1 / -1;
        }
}

@media (max-width: 520px) {
  :root {
          --font-hero: 35px;
          --font-lead: 15px;
        }

  [id] {
          scroll-margin-top: 78px;
        }

  .topbar-inner {
          min-height: 62px;
        }

  .brand-logo {
          width: 32px;
          height: 32px;
        }

  .brand-name {
          font-size: 15px;
        }

  .topbar-download {
          height: 36px;
          padding: 0 12px;
        }

  .site-announcement {
          padding: 10px 18px;
        }

  .site-announcement-inner {
          min-height: 0;
          align-items: flex-start;
          justify-content: flex-start;
          gap: 10px;
        }

  .site-announcement-badge {
          margin-top: 1px;
        }

  .site-announcement-text {
          font-size: 12px;
        }

  .section-title {
          font-size: 28px;
        }

  .section-lead {
          font-size: 14px;
        }

  .footer-inner {
          width: min(100% - 36px, 1200px);
          padding: 40px 0 24px;
        }

  .footer-main {
          grid-template-columns: repeat(2, minmax(0, 1fr));
          gap: 32px 24px;
        }

  .footer-brand {
          grid-column: 1 / -1;
        }

  .footer-bottom {
          margin-top: 34px;
          padding-top: 20px;
          align-items: flex-start;
          flex-direction: column;
          gap: 6px;
        }
}

@media (prefers-reduced-motion: reduce) {
  html {
          scroll-behavior: auto;
        }

  .topbar-inner {
          animation: none;
        }

  html.motion-ready [data-reveal] {
          opacity: 1;
          transform: none;
          transition: none;
        }

  .download-button {
          transition: none;
        }
}

@keyframes topbarEnter {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }