:root {
  --blue: #075cff;
  --blue-deep: #071a53;
  --blue-soft: #eaf3ff;
  --text: #071846;
  --muted: #617192;
  --line: #dce7f7;
  --card: #ffffff;
  --shadow: 0 18px 42px rgba(18, 84, 190, 0.12);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 73% 10%, rgba(36, 126, 255, 0.12), transparent 34%),
    radial-gradient(circle at 5% 7%, rgba(58, 133, 255, 0.08), transparent 26%),
    #fbfdff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(1320px, calc(100% - 96px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(223, 232, 246, 0.72);
  backdrop-filter: blur(18px);
}

.nav {
  height: 84px;
  display: flex;
  align-items: center;
  gap: 44px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 330px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 54px;
  height: 54px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
  flex: 1;
  font-size: 16px;
  font-weight: 700;
}

.nav-links a {
  position: relative;
  padding: 30px 0;
  color: #172a5b;
}

.nav-links .active {
  color: var(--blue);
}

.nav-links .active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 18px;
  width: 26px;
  height: 3px;
  border-radius: 99px;
  background: var(--blue);
  transform: translateX(-50%);
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  height: 48px;
  padding: 0 28px;
  border-radius: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.nav-cta,
.btn.primary {
  color: white;
  background: linear-gradient(135deg, #064eff, #0873ff);
  box-shadow: 0 12px 24px rgba(7, 92, 255, 0.24);
}

.btn.ghost {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--blue);
}

.hero {
  padding: 56px 0 22px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 47% 53%;
  align-items: center;
  min-height: 500px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 24px;
  padding: 10px 18px;
  border-radius: 999px;
  color: var(--blue);
  background: #edf5ff;
  font-size: 15px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(38px, 3.8vw, 56px);
  line-height: 1.32;
  letter-spacing: 0;
  text-wrap: balance;
  word-break: keep-all;
  overflow-wrap: normal;
}

.hero h1 .accent {
  color: var(--blue);
  white-space: nowrap;
}

.lead {
  width: min(610px, 100%);
  margin: 24px 0 28px;
  color: #445474;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 28px;
}

.hero-visual {
  position: relative;
  margin-left: -80px;
  isolation: isolate;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(90deg, #f6faff 0%, rgba(246, 250, 255, 0.9) 22%, rgba(246, 250, 255, 0.38) 58%, rgba(246, 250, 255, 0) 100%) left / 34% 100% no-repeat,
    linear-gradient(270deg, #eaf3ff 0%, rgba(234, 243, 255, 0.78) 24%, rgba(234, 243, 255, 0) 100%) right / 20% 100% no-repeat,
    linear-gradient(180deg, #eaf3ff 0%, rgba(234, 243, 255, 0.76) 26%, rgba(234, 243, 255, 0) 100%) top / 100% 22% no-repeat,
    linear-gradient(0deg, #f6faff 0%, rgba(246, 250, 255, 0.78) 26%, rgba(246, 250, 255, 0) 100%) bottom / 100% 24% no-repeat;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 13% 2% 6% 8%;
  border-radius: 42%;
  background: radial-gradient(circle, rgba(32, 115, 255, 0.16), transparent 62%);
  filter: blur(10px);
  animation: heroPulse 7s ease-in-out infinite;
}

.hero-visual img {
  position: relative;
  z-index: 2;
  width: 100%;
  mix-blend-mode: multiply;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.18) 9%, #000 25%);
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.18) 9%, #000 25%);
}

.hero-motion {
  position: absolute;
  inset: 3% 0 6% 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
  border-radius: 44px;
}

.orbit {
  position: absolute;
  left: 18%;
  top: 9%;
  width: 74%;
  height: 66%;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  transform-origin: 50% 50%;
  box-shadow: 0 0 18px rgba(86, 158, 255, 0.12);
}

.orbit::after {
  content: "";
  position: absolute;
  right: 14%;
  top: 6%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 0 16px 5px rgba(109, 185, 255, 0.65);
}

.orbit-one {
  animation: orbitFloat 17s linear infinite;
}

.orbit-two {
  left: 12%;
  top: 18%;
  width: 82%;
  height: 52%;
  border-color: rgba(95, 166, 255, 0.36);
  animation: orbitFloat 22s linear infinite reverse;
}

.orbit-three {
  left: 24%;
  top: 2%;
  width: 60%;
  height: 76%;
  border-color: rgba(255, 255, 255, 0.38);
  animation: orbitFloat 28s linear infinite;
}

.spark,
.bubble {
  position: absolute;
  border-radius: 999px;
  background: radial-gradient(circle at 35% 30%, #ffffff, #67b9ff 44%, #1263ff 72%);
  box-shadow: 0 0 18px rgba(44, 127, 255, 0.34);
  animation: floatDot 6s ease-in-out infinite;
}

.spark {
  width: 8px;
  height: 8px;
}

.spark-one {
  left: 24%;
  top: 11%;
}

.spark-two {
  right: 17%;
  top: 15%;
  width: 10px;
  height: 10px;
  animation-delay: -1.3s;
}

.spark-three {
  left: 49%;
  bottom: 24%;
  width: 6px;
  height: 6px;
  animation-delay: -2.4s;
}

.spark-four {
  right: 5%;
  top: 43%;
  width: 7px;
  height: 7px;
  animation-delay: -3.1s;
}

.bubble {
  width: 34px;
  height: 34px;
  opacity: 0.74;
  animation-duration: 8s;
}

.bubble-one {
  left: 11%;
  top: 45%;
}

.bubble-two {
  right: 8%;
  bottom: 23%;
  width: 24px;
  height: 24px;
  animation-delay: -3.5s;
}

.cube-glow {
  position: absolute;
  right: 7%;
  top: 35%;
  width: 44px;
  height: 44px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.9), rgba(201,227,255,.4)),
    linear-gradient(45deg, transparent 47%, rgba(78,145,255,.26) 48% 52%, transparent 53%);
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 12px;
  transform: rotate(45deg);
  box-shadow: 0 0 26px rgba(86, 158, 255, 0.28);
  animation: cubeDrift 9s ease-in-out infinite;
}

@keyframes heroPulse {
  0%, 100% {
    opacity: 0.72;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.04);
  }
}

@keyframes orbitFloat {
  from {
    transform: rotate(-8deg);
  }
  to {
    transform: rotate(352deg);
  }
}

@keyframes floatDot {
  0%, 100% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.62;
  }
  50% {
    transform: translate3d(10px, -16px, 0) scale(1.12);
    opacity: 1;
  }
}

@keyframes cubeDrift {
  0%, 100% {
    transform: translate3d(0, 0, 0) rotate(45deg);
  }
  50% {
    transform: translate3d(-12px, -18px, 0) rotate(55deg);
  }
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 22px 34px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.feature-strip article {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 72px;
  padding: 0 34px;
  border-right: 1px solid var(--line);
}

.feature-strip article:last-child {
  border-right: 0;
}

.feature-strip h2 {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 20px;
}

.feature-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.mini-icon,
.tile,
.reason-icon {
  flex: 0 0 auto;
  object-fit: contain;
}

.mini-icon {
  width: 54px;
  height: 54px;
}

.section {
  padding-top: 34px;
}

.section.compact {
  padding-top: 26px;
}

.section > h2,
.section-head h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.25;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 16px;
}

.section-head a {
  color: var(--blue);
  font-weight: 800;
}

.section-head p,
.section-head small {
  margin: 0;
  color: #6b7891;
  font-size: 15px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  position: relative;
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: center;
  min-height: 182px;
  padding: 14px 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: white;
  box-shadow: 0 14px 28px rgba(42, 91, 167, 0.06);
}

.product-learning {
  background: linear-gradient(135deg, #f8fbff, #edf5ff);
}

.product-collab {
  background: linear-gradient(135deg, #f8fffb, #ecfbf3);
}

.product-community {
  background: linear-gradient(135deg, #fbf9ff, #f1ebff);
}

.product-data {
  background: linear-gradient(135deg, #fffbf6, #fff0de);
}

.phone-frame {
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  min-width: 0;
}

.phone-frame img {
  width: 118px;
  height: 174px;
  object-fit: contain;
  object-position: center bottom;
  filter: drop-shadow(0 12px 15px rgba(9, 38, 86, 0.18));
}

.product-info {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  align-content: center;
  min-width: 0;
  padding-left: 8px;
}

.product-badge {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: white;
  background: linear-gradient(135deg, #1765ff, #72bdff);
  font-size: 16px;
  font-weight: 900;
}

.product-collab .product-badge {
  background: linear-gradient(135deg, #22b86d, #7ee2ab);
}

.product-community .product-badge {
  background: linear-gradient(135deg, #7b4cff, #b899ff);
}

.product-data .product-badge {
  background: linear-gradient(135deg, #ff8b2c, #ffc36a);
}

.product-info h3 {
  margin: 0;
  font-size: 19px;
}

.product-subtitle {
  margin: 2px 0 12px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
}

.product-collab .product-subtitle {
  color: #1fa765;
}

.product-community .product-subtitle {
  color: #7750ef;
}

.product-data .product-subtitle {
  color: #e57c1e;
}

.product-info p:not(.product-subtitle) {
  grid-column: 1 / -1;
  margin: 0 0 14px;
  color: #5d6b87;
  font-size: 14px;
  line-height: 1.65;
}

.product-info a {
  grid-column: 1 / -1;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--blue);
  background: white;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(42, 91, 167, 0.08);
}

.product-card > img {
  width: 100%;
  height: auto;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  margin-top: 16px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 54px;
}

.info-card {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 104px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.86);
}

.info-card.wide {
  min-height: 116px;
}

.tile {
  width: 66px;
  height: 66px;
}

.info-card h3,
.reason-grid h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.info-card p,
.reason-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 46px;
  margin-top: 18px;
}

.reason-grid article {
  display: grid;
  grid-template-columns: 70px 1fr;
  grid-template-rows: auto auto;
  column-gap: 18px;
  align-items: center;
  padding-right: 34px;
  border-right: 1px solid var(--line);
}

.reason-grid article:last-child {
  border-right: 0;
}

.reason-icon {
  grid-row: span 2;
  width: 64px;
  height: 64px;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  min-height: 112px;
  margin-top: 34px;
  margin-bottom: 28px;
  padding: 22px 46px;
  border-radius: 18px;
  color: white;
  background: #064de6 url("images/cta-bg.svg") center / cover no-repeat;
  box-shadow: 0 18px 36px rgba(5, 76, 224, 0.22);
}

.cta h2 {
  margin: 0 0 8px;
  font-size: 30px;
}

.cta p {
  margin: 0;
  opacity: 0.88;
}

.btn.light {
  color: var(--blue);
  background: white;
}

.site-footer {
  color: white;
  background:
    radial-gradient(circle at 74% 120%, rgba(0, 114, 255, 0.35), transparent 40%),
    linear-gradient(135deg, #001943, #00275b 52%, #00173c);
  padding: 42px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 0.82fr 0.62fr;
  gap: 48px;
  align-items: start;
}

.footer-brand {
  display: flex;
  gap: 22px;
  padding-right: 34px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand img {
  width: 64px;
  height: 64px;
}

.footer-brand h2,
.footer-nav h3,
.social h3 {
  margin: 0 0 14px;
  font-size: 18px;
}

.footer-brand p,
address p {
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  line-height: 1.8;
}

address {
  font-style: normal;
}

.footer-nav div {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 14px 30px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.72);
}

.social div {
  display: flex;
  gap: 14px;
}

.social a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.social img {
  width: 34px;
  height: 34px;
}

.copyright {
  margin: 32px 0 0;
  color: rgba(255, 255, 255, 0.62);
  text-align: center;
  font-size: 14px;
}

@media (max-width: 1180px) {
  .container {
    width: min(100% - 48px, 1040px);
  }

  .nav {
    gap: 22px;
  }

  .brand {
    min-width: auto;
    font-size: 18px;
  }

  .nav-links {
    gap: 24px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    margin: 0;
  }

  .feature-strip,
  .product-grid,
  .capability-grid,
  .reason-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .support-grid,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-strip article:nth-child(2) {
    border-right: 0;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, 680px);
  }

  .site-header {
    position: static;
  }

  .nav {
    height: auto;
    padding: 18px 0;
    flex-wrap: wrap;
  }

  .brand {
    width: 100%;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 18px;
    overflow-x: auto;
    font-size: 14px;
  }

  .nav-links a {
    padding: 12px 0;
  }

  .nav-links .active::after {
    bottom: 2px;
  }

  .hero {
    padding-top: 30px;
  }

  .hero h1 {
    font-size: 34px;
    word-break: normal;
    overflow-wrap: break-word;
  }

  .lead {
    font-size: 16px;
  }

  .hero-actions,
  .cta {
    align-items: stretch;
    flex-direction: column;
  }

  .feature-strip,
  .product-grid,
  .capability-grid,
  .support-grid,
  .reason-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .feature-strip {
    padding: 16px;
  }

  .feature-strip article,
  .reason-grid article,
  .footer-brand {
    border-right: 0;
  }

  .feature-strip article {
    padding: 14px;
    border-bottom: 1px solid var(--line);
  }

  .feature-strip article:last-child {
    border-bottom: 0;
  }

  .capability-grid,
  .support-grid,
  .reason-grid {
    gap: 16px;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta {
    padding: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-visual::before,
  .orbit,
  .spark,
  .bubble,
  .cube-glow {
    animation: none;
  }
}