/* 公共介绍页补充样式：保留原有品牌骨架，扩展为全平台工具介绍。 */
.intro {
  min-height: 630px;
  grid-template-columns: minmax(0, 1.02fr) minmax(430px, 0.98fr);
  gap: 76px;
}

.lead {
  max-width: 610px;
}

.login-link,
.primary-action,
.secondary-action {
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.login-link:hover,
.primary-action:hover {
  background: #243047;
  transform: translateY(-2px);
}

.secondary-action:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.login-link:active,
.primary-action:active,
.secondary-action:active {
  transform: translateY(0) scale(0.98);
}

.product-view {
  position: relative;
  overflow: hidden;
  background: linear-gradient(145deg, #f8fafb 0%, #eef4f5 100%);
}

.product-view::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 250px;
  height: 250px;
  border: 1px solid rgba(8, 125, 140, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.capability-list {
  position: relative;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.capability-list li:last-child {
  border-bottom: 0;
}

.capability-list img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(23, 32, 51, 0.1);
}

.capability-list p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.service-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.service-grid .service-feature {
  grid-column: span 4;
  min-height: 244px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1), border-color 220ms ease, box-shadow 220ms ease;
}

.service-grid .service-feature:hover {
  transform: translateY(-5px);
  border-color: rgba(8, 125, 140, 0.45);
  box-shadow: 0 18px 34px rgba(43, 65, 77, 0.1);
}

.service-grid .service-feature-wide {
  grid-column: span 8;
  flex-direction: row;
  align-items: flex-end;
  gap: 42px;
}

.service-feature > img {
  width: 62px;
  height: 62px;
  flex: 0 0 auto;
  border-radius: 8px;
  object-fit: cover;
}

.service-feature h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.service-feature p {
  max-width: 690px;
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.service-feature-tint {
  background: #eaf4f3 !important;
  border-color: #c8dcda !important;
}

.service-grid .service-feature-commerce {
  grid-column: 1 / -1;
  min-height: 172px;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) minmax(280px, 0.72fr);
  align-items: center;
  gap: 28px;
  padding: 30px 34px;
  border-color: #c7dcda;
  border-top: 4px solid var(--cyan);
  background: linear-gradient(110deg, #fff 0%, #f7fbfb 58%, #edf6f5 100%);
}

.service-feature-commerce > img {
  width: 68px;
  height: 68px;
  box-shadow: 0 12px 28px rgba(50, 45, 96, 0.12);
}

.service-feature-commerce .service-feature-copy {
  align-self: center;
}

.commerce-details {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-left: 28px;
  border-left: 1px solid #cfdedc;
}

.commerce-details div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 16px;
}

.commerce-details dt {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
}

.commerce-details dd {
  margin: 0;
  color: #415064;
  font-size: 14px;
  line-height: 1.6;
}

@media (prefers-reduced-motion: no-preference) {
  .intro-copy {
    animation: platform-enter 620ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .product-view {
    animation: platform-enter 700ms 80ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .service-feature {
    animation: platform-enter 520ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }
}

@keyframes platform-enter {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .intro {
    grid-template-columns: 1fr;
  }

  .service-grid .service-feature,
  .service-grid .service-feature-wide {
    grid-column: span 6;
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .service-grid .service-feature-commerce {
    grid-column: 1 / -1;
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .commerce-details {
    grid-column: 1 / -1;
    width: 100%;
    padding: 20px 0 0;
    border-top: 1px solid #cfdedc;
    border-left: 0;
  }
}

@media (max-width: 620px) {
  .intro {
    min-height: auto;
  }

  .intro-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .intro-actions a {
    width: 100%;
  }

  .service-grid .service-feature,
  .service-grid .service-feature-wide {
    grid-column: 1 / -1;
    min-height: 0;
  }

  .service-grid .service-feature-commerce {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
    padding: 24px 20px;
  }

  .service-feature-commerce > img {
    width: 50px;
    height: 50px;
  }

  .commerce-details {
    grid-column: 1 / -1;
  }

  .commerce-details div {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 12px;
  }

  .capability-list li {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 13px;
  }

  .capability-list img {
    width: 38px;
    height: 38px;
  }
}

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

  .intro-copy,
  .product-view,
  .service-feature {
    animation: none !important;
  }

  .login-link,
  .primary-action,
  .secondary-action,
  .service-feature {
    transition: none !important;
  }
}

/* GSAP tool orbit: interactive hero stage. */
body.gsap-enhanced .intro-copy,
body.gsap-enhanced .product-view,
body.gsap-enhanced .service-feature {
  animation: none !important;
}

.orbit-view {
  min-height: 576px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 20px 22px 16px;
  border: 1px solid #bdcdd2;
  border-top: 4px solid var(--cyan);
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 46%, rgba(13, 139, 151, 0.14), transparent 31%),
    linear-gradient(145deg, rgba(253, 254, 254, 0.98), rgba(233, 242, 243, 0.94));
  box-shadow: 16px 18px 0 #e5edef, 0 24px 70px rgba(36, 65, 76, 0.1);
  isolation: isolate;
}

.orbit-view::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 111, 121, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 111, 121, 0.035) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, #000, transparent 80%);
}

.orbit-head {
  position: relative;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 2px 14px;
  border-bottom: 1px solid rgba(115, 143, 151, 0.25);
}

.orbit-head > span {
  display: grid;
  gap: 3px;
}

.orbit-head strong {
  color: #172436;
  font-size: 17px;
}

.orbit-head small {
  color: #6a7b87;
  font-size: 12px;
}

.orbit-head small b {
  color: #247783;
  font-variant-numeric: tabular-nums;
}

.orbit-head em {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #317262;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.orbit-head em i,
.orbit-hint > span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2d9875;
  box-shadow: 0 0 0 4px rgba(45, 152, 117, 0.12);
}

.orbit-stage {
  position: relative;
  min-height: 452px;
  perspective: 900px;
  transform-style: preserve-3d;
  touch-action: pan-y;
}

.orbit-stage::before,
.orbit-stage::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  background: rgba(25, 139, 149, 0.55);
  box-shadow: 0 0 18px rgba(25, 139, 149, 0.28);
}

.orbit-stage::before {
  left: 18%;
  top: 21%;
  width: 8px;
  height: 8px;
}

.orbit-stage::after {
  right: 17%;
  bottom: 23%;
  width: 5px;
  height: 5px;
  opacity: 0.65;
}

.orbit-glow {
  position: absolute;
  left: 50%;
  top: 49%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 179, 183, 0.21), rgba(61, 179, 183, 0.04) 48%, transparent 70%);
  filter: blur(7px);
  opacity: 0.78;
  transform: translate(-50%, -50%);
}

.mascot-core {
  position: absolute;
  left: 50%;
  top: 49%;
  z-index: 5;
  width: 190px;
  display: grid;
  justify-items: center;
  transform: translate(-50%, -50%);
  transform-style: preserve-3d;
  pointer-events: none;
}

.mascot-shell {
  position: relative;
  width: 164px;
  height: 164px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 44px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(225, 239, 240, 0.76));
  box-shadow:
    inset 0 1px 0 #fff,
    inset -10px -12px 22px rgba(50, 112, 119, 0.08),
    0 28px 45px rgba(26, 69, 78, 0.18);
  transform-style: preserve-3d;
}

.mascot-shell::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(24, 133, 144, 0.14);
  border-radius: 37px;
  pointer-events: none;
}

.mascot-shell img {
  position: relative;
  z-index: 3;
  width: 146px;
  height: 146px;
  object-fit: contain;
  filter: drop-shadow(0 14px 12px rgba(35, 51, 59, 0.2));
  transform: translateZ(34px);
  transform-origin: 52% 88%;
}

.mascot-depth {
  position: absolute;
  inset: 15px;
  border-radius: 34px;
  background: rgba(14, 124, 136, 0.1);
}

.depth-one { transform: translate3d(8px, 9px, -12px); }
.depth-two { transform: translate3d(15px, 17px, -24px); opacity: 0.48; }

.mascot-shadow {
  position: absolute;
  left: 50%;
  bottom: 28px;
  width: 132px;
  height: 28px;
  border-radius: 50%;
  background: rgba(25, 69, 77, 0.2);
  filter: blur(12px);
  transform: translateX(-50%) translateZ(-50px);
}

.mascot-core > strong {
  margin-top: 13px;
  color: #172436;
  font-size: 16px;
  letter-spacing: 0.02em;
}

.mascot-core > small {
  margin-top: 3px;
  color: #6b7d88;
  font-size: 11px;
}

.orbit-tool {
  position: absolute;
  left: 50%;
  top: 49%;
  z-index: 4;
  width: 55px;
  height: 55px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(164, 186, 193, 0.58);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 26px rgba(28, 65, 75, 0.13), inset 0 1px 0 #fff;
  text-decoration: none;
  transform: translate(-50%, -50%);
  transform-style: preserve-3d;
  will-change: transform;
}

.orbit-tool::before {
  content: "";
  position: absolute;
  inset: -5px;
  z-index: -1;
  border: 1px solid transparent;
  border-radius: 19px;
  transition: border-color 180ms ease, background 180ms ease;
}

.orbit-tool img {
  width: 39px;
  height: 39px;
  border-radius: 9px;
  object-fit: cover;
  transform: translateZ(16px);
  will-change: transform;
}

.orbit-tool span {
  position: absolute;
  left: 50%;
  bottom: -35px;
  width: max-content;
  max-width: 140px;
  padding: 6px 9px;
  border: 1px solid rgba(169, 187, 193, 0.52);
  border-radius: 7px;
  color: #314654;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 18px rgba(31, 67, 76, 0.1);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.2;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 5px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.orbit-tool:hover::before,
.orbit-tool:focus-visible::before {
  border-color: rgba(24, 134, 144, 0.38);
  background: rgba(21, 139, 149, 0.08);
}

.orbit-tool:hover span,
.orbit-tool:focus-visible span {
  opacity: 1;
  transform: translate(-50%, 0);
}

.orbit-tool:focus-visible {
  outline: 3px solid rgba(8, 125, 140, 0.26);
  outline-offset: 5px;
}

.orbit-hint {
  position: relative;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0;
  color: #6b7b86;
  font-size: 11px;
  letter-spacing: 0.03em;
}

/* Scroll gravity: cards drop and stack like physical blocks. */
.service-grid {
  perspective: 1200px;
  transform-style: preserve-3d;
}

.service-grid .service-feature {
  backface-visibility: hidden;
  will-change: transform;
  box-shadow: 0 12px 0 rgba(196, 210, 214, 0.46), 0 22px 42px rgba(41, 67, 77, 0.08);
}

.service-grid .service-feature:hover {
  box-shadow: 0 7px 0 rgba(153, 190, 193, 0.52), 0 27px 48px rgba(34, 72, 81, 0.14);
}

@media (max-width: 900px) {
  .orbit-view { width: min(100%, 680px); min-height: 550px; }
  .orbit-stage { min-height: 430px; }
}

@media (max-width: 620px) {
  .orbit-view {
    min-height: 468px;
    padding: 17px 14px 14px;
    border-radius: 15px;
    box-shadow: 8px 10px 0 #e5edef;
  }
  .orbit-stage { min-height: 360px; }
  .mascot-shell { width: 132px; height: 132px; border-radius: 36px; }
  .mascot-shell img { width: 118px; height: 118px; }
  .mascot-core { width: 148px; }
  .orbit-tool { width: 46px; height: 46px; border-radius: 13px; }
  .orbit-tool img { width: 33px; height: 33px; }
  .orbit-head small { display: none; }
  .orbit-hint { font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-tool,
  .mascot-shell,
  .mascot-core,
  .orbit-glow { will-change: auto; }

  .service-grid .service-feature {
    will-change: auto;
    transform: none !important;
  }
}