/* 企业服务 · 五环合作。圆环是可操作的流程控件，文字与转动分开。 */
.cooperation-section { background: #f3f7fa; border-top: 1px solid #e5edf3; }
.cooperation-layout { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 72px; }
.cooperation-copy { max-width: 450px; }
.cooperation-copy .eyebrow { color: var(--gold-dark); }
.cooperation-copy h2 { line-height: 1.5; letter-spacing: .02em; }
.cooperation-lead { margin-top: 28px; color: var(--gold-dark); font: 700 20px/1.8 var(--serif); letter-spacing: .06em; }
.cooperation-description { max-width: 29em; margin-top: 22px; color: var(--muted); font-size: 15px; line-height: 2; }
.cooperation-copy .text-link { margin-top: 32px; }
.cooperation-diagram { min-width: 0; }
.cooperation-visual { text-align: center; }
.orbit-wheel { position: relative; width: min(100%, 560px); aspect-ratio: 1; margin-inline: auto; overflow: clip; overflow-clip-margin: 8px; }
.orbit-track { position: absolute; inset: 56px; margin: 0; padding: 0; list-style: none; border: 1px solid #cdb480; border-radius: 50%; }
.orbit-position { position: absolute; inset: 0; transform: rotate(var(--step-angle)); pointer-events: none; }
.orbit-align { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%) rotate(calc(-1 * var(--step-angle))); }
.orbit-node { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; width: 104px; height: 104px; padding: 15px 6px; border: 1px solid #cdb480; border-radius: 50%; background: #fff; color: var(--navy); box-shadow: 0 6px 18px #09265008; pointer-events: auto; }
.orbit-number { color: var(--gold-dark); font: 700 27px/1.1 Georgia, serif; }
.orbit-label { white-space: nowrap; font: 700 17px/1.5 var(--serif); }
.orbit-node[aria-pressed="true"] { border-color: var(--navy); background: var(--navy); color: #fff; }
.orbit-node[aria-pressed="true"] .orbit-number { color: var(--gold-light); }
.orbit-node:hover:not([aria-pressed="true"]) { border-color: var(--gold-dark); background: #fffaf0; }
.orbit-node:focus-visible { outline-offset: 5px; }
.orbit-center { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; justify-content: center; width: 230px; height: 230px; padding: 28px; border: 1px solid #d3bb89; border-radius: 50%; background: #fff; box-shadow: 0 0 0 12px #edf3f7; }
.orbit-center-number { color: var(--gold-dark); font: 15px/1.5 Georgia, serif; letter-spacing: .12em; font-variant-numeric: tabular-nums; }
.orbit-center h3 { margin-top: 13px; font-size: 28px; letter-spacing: .03em; }
.orbit-center-description { margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.85; text-wrap: balance; }
.cooperation-fallback { grid-template-columns: 1fr; gap: 0; margin-top: 0; }
.cooperation-fallback .process-item { display: grid; grid-template-columns: 45px 1fr; gap: 20px; padding-block: 22px; border-color: var(--line); }
.cooperation-fallback .process-item h3 { margin: 0; }
.cooperation-fallback .process-item p { margin-top: 6px; }
.cooperation-ready .orbit-track { animation: cooperation-clockwise 54s linear infinite; }
.cooperation-ready .orbit-node { animation: cooperation-upright 54s linear infinite; }
.orbit-paused .orbit-track, .orbit-paused .orbit-node { animation-play-state: paused; }
@keyframes cooperation-clockwise { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes cooperation-upright { from { transform: rotate(0deg); } to { transform: rotate(-360deg); } }
@media (max-width: 1120px) {
  .cooperation-layout { gap: 40px; grid-template-columns: .85fr 1.15fr; }
  .orbit-track { inset: 50px; }
  .orbit-node { width: 92px; height: 92px; }
  .orbit-center { width: 202px; height: 202px; padding: 22px; }
  .orbit-center h3 { font-size: 25px; }
}
@media (max-width: 900px) {
  .cooperation-layout { grid-template-columns: 1fr; gap: 42px; }
  .cooperation-copy { max-width: 540px; margin-inline: auto; text-align: center; }
  .cooperation-copy h2 br { display: none; }
  .cooperation-copy h2 { text-wrap: balance; }
  .cooperation-description { margin-inline: auto; text-wrap: balance; }
  .cooperation-lead { font-size: 18px; }
}
@media (max-width: 600px) {
  .cooperation-layout { gap: 36px; }
  .cooperation-copy h2 { font-size: 32px; }
  .cooperation-copy h2 br { display: block; }
  .cooperation-lead { font-size: 17px; margin-top: 20px; }
  .cooperation-lead br { display: block; }
  .cooperation-description { margin-top: 16px; font-size: 14px; }
  .cooperation-copy .text-link { margin-top: 24px; }
  .orbit-wheel { max-width: 368px; }
  .orbit-track { inset: 36px; }
  .orbit-node { width: 72px; height: 72px; gap: 5px; padding: 10px 4px; }
  .orbit-number { font-size: 22px; }
  .orbit-label { font-size: 13px; }
  .orbit-center { width: 150px; height: 150px; padding: 20px; box-shadow: 0 0 0 6px #edf3f7; }
  .orbit-center h3 { margin-top: 8px; font-size: 20px; }
  .orbit-center-number { font-size: 12px; }
  .orbit-center-description { margin-top: 8px; font-size: 12px; line-height: 1.8; }
}
@media (max-width: 360px) {
  .orbit-track { inset: 32px; }
  .orbit-node { width: 64px; height: 64px; }
  .orbit-number { font-size: 20px; }
  .orbit-label { font-size: 12px; }
  .orbit-center { width: 128px; height: 128px; padding: 15px; box-shadow: 0 0 0 4px #edf3f7; }
  .orbit-center h3 { margin-top: 6px; font-size: 18px; }
  .orbit-center-description { font-size: 11px; margin-top: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  .cooperation-ready .orbit-track, .cooperation-ready .orbit-node { animation: none; }
}