.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  height: 76px;
  border-bottom: 0;
  background: rgba(228, 242, 252, .72);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 26px;
  width: min(calc(100% - 48px), var(--max));
  max-width: var(--max);
  height: 76px;
  margin: auto;
  padding: 0 4px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: #1768a8;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.04em;
  text-decoration: none;
}

.brand em {
  color: var(--violet);
  font-style: normal;
}

.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  overflow: hidden;
}

.brand-mark img {
  position: absolute;
  left: -8px;
  top: -5px;
  width: 50px;
  height: 50px;
  object-fit: contain;
  filter: drop-shadow(0 5px 7px rgba(30, 100, 180, .22));
}

.site-header nav {
  display: flex;
  gap: 22px;
}

.site-header nav a {
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 13px;
}

.system-login {
  color: #2d5f8a;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.system-register {
  min-height: 38px;
  padding: 7px 13px;
  border-color: rgba(37, 99, 235, .2);
  background: rgba(245, 250, 255, .65);
  color: #1e5aa8;
  font-size: 13px;
  box-shadow: none;
}

.menu-toggle {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  align-items: center;
  min-height: 680px;
  padding-block: 72px 84px;
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.eyebrow {
  display: inline-flex;
  padding: 7px 11px;
  border: 1px solid rgba(37, 99, 235, .22);
  border-radius: 999px;
  background: rgba(240, 248, 255, .55);
  color: #2563eb;
  font: 800 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
}

.hero h1 {
  margin: 20px 0 20px;
  font-size: clamp(48px, 6vw, 74px);
  line-height: 1.06;
  letter-spacing: -.055em;
}

.hero h1 span {
  color: transparent;
  background: linear-gradient(90deg, #1a8fd4, #2563eb);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-summary {
  max-width: 650px;
  color: #3d6385;
  font-size: 17px;
  line-height: 1.88;
}

.hero-actions,
.live-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 22px;
  margin: 27px 0 0;
  color: #38566d;
  font-size: 14px;
  font-weight: 700;
}

.hero-note span::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
}

.hero-visual {
  position: relative;
  min-height: 500px;
}

.knowledge-globe {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 350px;
  height: 350px;
  transform: translate(-50%, -50%);
}

.product-float,
.product-card,
.glass-card,
.autr-panel,
.growth-chain article {
  border: 1px solid rgba(255, 255, 255, .72);
  background: linear-gradient(145deg, rgba(248, 252, 255, .78), rgba(210, 228, 245, .48));
  box-shadow: var(--shadow);
  backdrop-filter: blur(13px);
}

.product-float {
  position: absolute;
  z-index: 7;
  width: 174px;
  padding: 15px 16px;
  border-radius: 17px;
}

.product-float small {
  display: block;
  margin-top: 3px;
  color: #61788c;
  font: 700 11px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .04em;
}

.product-float strong {
  display: block;
  font-size: 17px;
}

.product-float p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.product-float > span {
  display: inline-block;
  margin-top: 7px;
  color: #2563eb;
  font-size: 11px;
  font-weight: 800;
}

.float-lingxi {
  left: -4px;
  top: 38px;
}

.float-zhida {
  right: -8px;
  top: 164px;
  border-color: rgba(37, 99, 235, .28);
  background: linear-gradient(145deg, rgba(230, 245, 255, .92), rgba(214, 230, 252, .85));
}

.float-xiaoguan {
  left: 44px;
  bottom: 4px;
}

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

.product-card {
  position: relative;
  min-height: 265px;
  padding: 30px 27px;
  border-radius: 22px;
}

.product-card.featured {
  border-color: rgba(255, 255, 255, .9);
  background: linear-gradient(145deg, rgba(220, 240, 255, .88), rgba(214, 228, 250, .78));
  transform: translateY(-8px);
}

.product-status {
  position: absolute;
  right: 18px;
  top: 18px;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(37, 99, 235, .1);
  color: #2563eb;
  font-size: 11px;
  font-weight: 800;
}

.product-card h3 {
  margin: 27px 0 4px;
  font-size: 28px;
}

.product-type {
  display: block;
  margin-bottom: 14px;
  color: #586f8a;
  font: 800 18px/1.35 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .045em;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.text-link {
  display: inline-block;
  margin-top: 21px;
  color: #1a6bb8;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.growth-chain {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 13px;
}

.growth-chain article {
  position: relative;
  z-index: 1;
  padding: 26px 20px;
  border-radius: 18px;
  text-align: center;
  cursor: pointer;
  transition:
    transform .3s cubic-bezier(.22, 1, .36, 1),
    border-color .3s ease,
    box-shadow .3s ease,
    background .3s ease;
}

.growth-chain article:hover,
.growth-chain article:focus-visible {
  z-index: 4;
  border-color: rgba(37, 99, 235, .4);
  background: linear-gradient(145deg, rgba(236, 247, 255, .95), rgba(210, 230, 252, .9)) !important;
  box-shadow:
    0 20px 42px rgba(30, 90, 170, .2),
    0 0 0 1px rgba(37, 99, 235, .12) !important;
  transform: translateY(-10px);
}

.growth-chain article:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -13px;
  top: 44%;
  z-index: 2;
  color: #3b82f6;
  font-weight: 900;
  transition: color .28s ease, transform .28s ease;
}

.growth-chain article:hover:not(:last-child)::after {
  color: #1d4ed8;
  transform: translateX(3px);
}

.growth-chain b {
  display: block;
  font-size: 22px;
  transition: color .28s ease;
}

.growth-chain article:hover b {
  color: #1e4f8c;
}

.growth-chain p {
  min-height: 52px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
  transition: color .28s ease;
}

.growth-chain article:hover p {
  color: #3d6385;
}

.growth-chain span {
  display: inline-block;
  margin-top: 13px;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(37, 99, 235, .08);
  color: #1d6bb8;
  font-size: 12px;
  font-weight: 800;
  transition: background .28s ease, color .28s ease, transform .28s ease;
}

.growth-chain article:hover span {
  background: rgba(37, 99, 235, .14);
  color: #2563eb;
  transform: scale(1.04);
}

.live-product {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
}

.live-product h2 {
  margin-top: 12px;
}

.live-copy > p:not(.section-kicker) {
  color: var(--muted);
}

.live-pill {
  display: inline-flex;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(26, 143, 212, .12);
  color: #1a6bb8;
  font-size: 12px;
  font-weight: 800;
}

.autr-panel {
  padding: 30px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(230, 245, 255, .8), rgba(220, 232, 250, .7));
}

.autr-panel > p {
  color: #4a6f9a;
  font: 800 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
}

.autr-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.autr-grid article {
  padding: 24px 10px;
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 16px;
  background: rgba(245, 250, 255, .55);
  text-align: center;
}

.autr-grid b {
  display: block;
  color: transparent;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  background-clip: text;
  -webkit-background-clip: text;
  font-size: 36px;
}

.autr-grid span {
  font-size: 14px;
  font-weight: 700;
}

.card-grid {
  display: grid;
  gap: 18px;
}

.card-grid.three {
  grid-template-columns: repeat(3, 1fr);
}

.glass-card {
  padding: 27px;
  border-radius: var(--radius);
}

.glass-card h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.glass-card p {
  margin: 0;
  color: var(--muted);
  font-size: var(--card-body-size);
}

.about-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 42px;
  align-items: center;
}

.about-layout p {
  color: var(--muted);
}

.joint-research {
  padding: 27px;
  border-left: 4px solid #1a8fd4;
  border-radius: 0 16px 16px 0;
  background: rgba(228, 242, 252, .65);
  color: #1a4f78 !important;
  font-weight: 700;
}

.system-test-section {
  margin-block: 74px 92px;
  padding: 58px max(24px, 6vw);
  border: 1px solid rgba(255, 255, 255, .75);
  border-radius: 28px;
  background:
    radial-gradient(circle at 84% 20%, rgba(37, 99, 235, .12), transparent 30%),
    linear-gradient(145deg, rgba(240, 248, 255, .82), rgba(220, 234, 250, .72));
  box-shadow: var(--shadow);
  text-align: center;
}

.system-test-section h2 {
  margin-bottom: 12px;
}

.system-test-section > p:not(.section-kicker) {
  max-width: 660px;
  margin: 0 auto 24px;
  color: var(--muted);
  font-size: 17px;
}

.pricing-hero {
  padding-block: 96px 56px;
  text-align: center;
}

.pricing-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: -.05em;
}

.pricing-hero h1 span {
  color: transparent;
  background: linear-gradient(90deg, #1a8fd4, #2563eb);
  background-clip: text;
  -webkit-background-clip: text;
}

.pricing-hero > p:last-child {
  max-width: 720px;
  margin: auto;
  color: var(--muted);
  font-size: 17px;
}

.pricing-section {
  padding-bottom: 96px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  padding: 29px 23px;
  border: 1px solid rgba(255, 255, 255, .75);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(248, 252, 255, .8), rgba(214, 230, 245, .52));
  box-shadow: var(--shadow);
  backdrop-filter: blur(13px);
}

.pricing-card.featured {
  border-color: rgba(37, 99, 235, .28);
  background: linear-gradient(145deg, rgba(230, 245, 255, .9), rgba(220, 232, 250, .84));
  transform: translateY(-8px);
}

.pricing-label {
  margin-bottom: 8px;
  color: #3b6fb0;
  font: 800 11px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .1em;
}

.pricing-card h2 {
  margin-bottom: 4px;
  font-size: 28px;
}

.pricing-audience {
  min-height: 54px;
  margin-bottom: 17px;
  color: #3d6385;
  font-size: 15px;
  font-weight: 700;
}

.pricing-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.pricing-card li {
  position: relative;
  padding: 9px 0 9px 20px;
  border-top: 1px solid rgba(69, 99, 125, .1);
  color: var(--muted);
  font-size: 15px;
}

.pricing-card li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
}

.pricing-recommend {
  position: absolute;
  right: 18px;
  top: 18px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(37, 99, 235, .1);
  color: #2563eb;
  font-size: 11px;
  font-weight: 800;
}

.pricing-cta {
  margin-top: 34px;
  text-align: center;
}

.pricing-cta p {
  margin-bottom: 14px;
  color: var(--muted);
}

.customer-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px;
  border: 1px solid rgba(255, 255, 255, .84);
  border-radius: 999px;
  background: rgba(240, 248, 255, .92);
  box-shadow: 0 12px 30px rgba(30, 80, 140, .2);
  color: #1a5f9a;
  text-decoration: none;
  backdrop-filter: blur(14px);
}

.customer-float-icon {
  position: relative;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a8fd4, #2563eb);
}

.customer-float-icon::before,
.customer-float-icon::after {
  content: "";
  position: absolute;
  border: 2px solid #fff;
  border-radius: 50%;
}

.customer-float-icon::before {
  width: 18px;
  height: 14px;
  left: 8px;
  top: 9px;
}

.customer-float-icon::after {
  width: 14px;
  height: 11px;
  right: 7px;
  bottom: 8px;
}

.customer-float-label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 800;
  opacity: 0;
  transition: max-width .2s ease, opacity .2s ease, margin-right .2s ease;
}

.customer-float:hover .customer-float-label,
.customer-float:focus-visible .customer-float-label {
  max-width: 110px;
  margin-right: 8px;
  opacity: 1;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 38px max(24px, calc((100% - var(--max)) / 2));
  border-top: 1px solid var(--line);
  color: #38566d;
  font-size: 13px;
}

.site-footer p {
  margin-bottom: 3px;
}

.site-footer a {
  display: block;
  margin-bottom: 8px;
}