.product-system {
  position: relative;
  overflow: hidden;
  padding: clamp(78px, 10vw, 138px) clamp(22px, 7vw, 112px) 92px;
  background: #102b2d;
  color: #eff4ed;
}

.product-system::before,
.product-system::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(216, 181, 104, .19);
  border-radius: 50%;
}

.product-system::before { width: 520px; height: 520px; top: -280px; right: -140px; }
.product-system::after { width: 700px; height: 700px; bottom: -520px; left: -330px; border-color: rgba(121, 185, 176, .14); }
.product-system-intro, .ecosystem-flow, .product-catalog, .system-note { position: relative; z-index: 1; }
.product-system .section-label { color: #8cc8bf; }
.product-system-intro { max-width: 850px; }
.system-kicker { margin: 42px 0 14px; color: #d4a959; font-size: 11px; font-weight: 700; letter-spacing: .22em; }
.product-system h2 { max-width: 820px; margin: 0; color: #f5f2e9; font-size: clamp(38px, 5.2vw, 76px); line-height: 1.08; letter-spacing: -.055em; font-weight: 500; }
.system-lead { max-width: 690px; margin: 27px 0 0; color: #c8d8d0; font-size: clamp(17px, 2vw, 22px); line-height: 1.75; }
.system-lead-en { margin: 14px 0 0; color: #86a8a4; font-size: 13px; line-height: 1.6; letter-spacing: .02em; }

.ecosystem-flow { display: grid; grid-template-columns: minmax(0, 1fr) 34px minmax(0, 1fr) 34px minmax(0, 1fr) 34px minmax(0, 1fr); align-items: stretch; gap: 0; margin-top: 64px; }
.ecosystem-step { min-width: 0; padding: 22px 20px 20px; border-top: 1px solid rgba(175, 210, 200, .32); border-bottom: 1px solid rgba(175, 210, 200, .12); background: rgba(255, 255, 255, .035); }
.ecosystem-index { display: block; color: #d4a959; font: 11px/1.2 "Geist Mono", monospace; letter-spacing: .18em; }
.ecosystem-icon { display: block; margin: 22px 0 12px; color: #8cc8bf; font-size: 26px; line-height: 1; }
.ecosystem-step h3 { margin: 0; color: #f5f2e9; font-size: 20px; font-weight: 500; letter-spacing: -.03em; }
.ecosystem-step p { min-height: 78px; margin: 12px 0 16px; color: #b8ccc5; font-size: 13px; line-height: 1.7; }
.ecosystem-step small { color: #70918e; font: 10px/1.4 "Geist Mono", monospace; letter-spacing: .08em; }
.ecosystem-connector { display: flex; align-items: center; justify-content: center; color: #d4a959; font-size: 22px; opacity: .8; }

.product-catalog { margin-top: 90px; padding-top: 30px; border-top: 1px solid rgba(175, 210, 200, .22); }
.product-catalog-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.product-catalog-head > div > span { color: #8cc8bf; font: 10px/1.4 "Geist Mono", monospace; letter-spacing: .12em; }
.product-catalog-head h3 { margin: 12px 0 0; color: #f5f2e9; font-size: clamp(24px, 3vw, 38px); font-weight: 500; letter-spacing: -.04em; }
.system-link { flex: 0 0 auto; color: #f1cc82; font-size: 12px; text-decoration: none; border-bottom: 1px solid rgba(241, 204, 130, .55); padding-bottom: 5px; }
.system-link span { margin-left: 4px; }
.system-link:hover { color: #fff; border-color: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; margin-top: 30px; }
.product-card { display: flex; min-width: 0; flex-direction: column; color: inherit; text-decoration: none; background: #18383a; border: 1px solid rgba(198, 220, 209, .16); transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.product-card:hover { transform: translateY(-5px); border-color: rgba(241, 204, 130, .72); background: #1b4142; }
.product-card-media { aspect-ratio: 1 / 1; overflow: hidden; background: #0e2224; }
.product-card-media img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.product-card:hover .product-card-media img { transform: scale(1.045); }
.product-card-copy { display: flex; flex: 1; flex-direction: column; padding: 18px 17px 19px; }
.product-card-copy > span { color: #83afa8; font: 10px/1.4 "Geist Mono", monospace; letter-spacing: .08em; }
.product-card-copy h4 { margin: 11px 0 0; color: #f5f2e9; font-size: 18px; font-weight: 500; line-height: 1.35; }
.product-card-copy p { flex: 1; margin: 10px 0 18px; color: #afc8c0; font-size: 12px; line-height: 1.65; }
.product-card-copy strong { color: #f1cc82; font-size: 11px; font-weight: 500; line-height: 1.5; }
.system-note { max-width: 850px; margin: 30px 0 0; color: #8faea7; font-size: 11px; line-height: 1.75; }
.system-note strong { color: #d3e1d9; font-weight: 500; }

@media (max-width: 1080px) {
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ecosystem-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .ecosystem-connector { display: none; }
  .ecosystem-step p { min-height: 0; }
}

@media (max-width: 680px) {
  .product-system { padding: 68px 18px 76px; }
  .product-system h2 { font-size: 42px; }
  .system-kicker { margin-top: 35px; }
  .ecosystem-flow, .product-grid { grid-template-columns: 1fr; }
  .ecosystem-flow { gap: 12px; margin-top: 44px; }
  .ecosystem-step { padding: 18px 16px; }
  .ecosystem-icon { margin: 15px 0 9px; }
  .product-catalog { margin-top: 64px; }
  .product-catalog-head { display: block; }
  .system-link { display: inline-block; margin-top: 20px; }
}