:root {
  --ink: #181b46;
  --muted: #5d6788;
  --primary: #4b54ff;
  --primary-deep: #2d42f6;
  --accent: #ffb400;
  --line: rgba(57, 80, 139, 0.12);
  --shadow: 0 24px 70px rgba(77, 103, 168, 0.18);
  --footer: #090d3c;
  --container: 1200px;
  --font-ui: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(187, 210, 255, 0.55), transparent 34%),
    linear-gradient(180deg, #f4f7ff 0%, #edf4ff 38%, #f8fbff 100%);
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
}

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

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

.page-shell {
  overflow: hidden;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  position: relative;
}

.hero {
  position: relative;
  min-height: 760px;
  padding: 24px 0 90px;
  background: #edf4ff url("./assets/image/topbg.png") center top / cover no-repeat;
  isolation: isolate;
}

.hero__overlay {
  position: absolute;
  border-radius: 40px;
  pointer-events: none;
  z-index: -1;
}

.hero__overlay--left {
  width: 460px;
  height: 200px;
  left: 24%;
  bottom: 46px;
  transform: skew(-24deg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(215, 226, 255, 0.88));
  box-shadow: -24px -24px 40px rgba(110, 142, 228, 0.12);
}

.hero__overlay--right {
  width: 540px;
  height: 152px;
  right: 2%;
  top: 110px;
  transform: skew(-18deg);
  background: linear-gradient(180deg, rgba(89, 129, 255, 0.12), rgba(89, 129, 255, 0.03));
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #423bff;
  font-size: 22px;
  font-weight: 700;
}

.brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 12px 24px rgba(93, 124, 239, 0.22);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -16px;
  width: 0;
  height: 6px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #423bff;
  transition: width 180ms ease;
}

.nav__link:hover,
.nav__link.is-active {
  color: #423bff;
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: 72px;
}

.nav__cta {
  min-width: 148px;
  height: 46px;
  padding: 0 20px;
  border-radius: 16px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.92), rgba(212, 227, 255, 0.96));
  color: #3553ff;
  font-weight: 700;
  box-shadow: 0 10px 22px rgba(80, 108, 199, 0.14);
}

.hero__content {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(440px, 0.98fr);
  align-items: center;
  gap: 36px;
  padding-top: 84px;
}

.eyebrow,
.section__ghost {
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 18px;
  color: rgba(24, 27, 70, 0.52);
  font-size: 14px;
  font-weight: 700;
}

.hero__copy h1 {
  margin: 0;
  font-size: clamp(40px, 5vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero__text {
  max-width: 640px;
  margin: 20px 0 0;
  color: #464646;
  font-size: 18px;
  line-height: 1.78;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 144px;
  height: 46px;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--ghost {
  border: 1px solid rgba(59, 85, 255, 0.45);
  color: #3b55ff;
  background: rgba(255, 255, 255, 0.45);
}

.button--ghost:hover {
  border-color: rgba(59, 85, 255, 0.82);
  background: rgba(255, 255, 255, 0.88);
}

.button--primary {
  color: #fff;
  background: linear-gradient(90deg, #524cff 0%, #a4b6fd 100%);
  box-shadow: 0 12px 28px rgba(92, 96, 224, 0.3);
}

.button--primary:hover {
  background: linear-gradient(90deg, #332bff 0%, #8ba3ff 100%);
}

.hero__metrics {
  display: flex;
  gap: 18px;
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
}

.hero__metrics li {
  min-width: 150px;
  padding: 18px 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(85, 110, 189, 0.1);
  box-shadow: 0 18px 38px rgba(112, 136, 203, 0.12);
}

.hero__metrics strong {
  display: block;
  color: #3b55ff;
  font-size: 28px;
  line-height: 1;
}

.hero__metrics span {
  display: block;
  margin-top: 8px;
  color: rgba(24, 27, 70, 0.72);
  font-size: 14px;
}

.hero__visual {
  position: relative;
  min-height: 510px;
}

.speech {
  position: absolute;
  right: 10px;
  padding: 12px 18px;
  border-radius: 16px;
  background: rgba(251, 253, 255, 0.95);
  border: 3px solid #2e5fd7;
  box-shadow: 8px 8px 0 #254dc0;
  color: #4f67ff;
  font-size: 15px;
  line-height: 1.35;
}

.speech--top {
  top: 22px;
  width: 270px;
}

.speech--mid {
  top: 98px;
  width: 320px;
}

.hero-shot {
  position: absolute;
  left: 24px;
  right: 56px;
  bottom: 10px;
  padding: 16px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(227, 235, 255, 0.92));
  box-shadow: 0 24px 46px rgba(48, 72, 153, 0.18);
  transform: rotate(-10deg);
}

.hero-shot img {
  width: 100%;
  border-radius: 22px;
  border: 4px solid #d8e3ff;
}

.section {
  position: relative;
  padding: 98px 0 110px;
}

.section__ghost {
  position: absolute;
  top: 42px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 300;
  color: rgba(24, 27, 70, 0.05);
}

.section__title {
  margin: 0;
  text-align: center;
  font-size: clamp(34px, 4vw, 42px);
  line-height: 1.2;
}

.section--advantages {
  background: #edf4ff url("./assets/image/center/center-bg1.png") center top / cover no-repeat;
}

.section--capabilities {
  background: #eef5ff url("./assets/image/center/center-bg2.png") center top / cover no-repeat;
}

.section--showcase {
  background: #f7faff url("./assets/image/center/center-bg3.png") center top / cover no-repeat;
}

.card-grid {
  display: grid;
  gap: 28px;
  margin-top: 96px;
}

.card-grid--advantages {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid--capabilities {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  border-radius: 22px;
  border: 1px solid rgba(77, 95, 145, 0.06);
}

.feature-card--compact {
  min-height: 308px;
  padding: 34px 30px 30px;
  text-align: center;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 4px 4px 18px rgba(51, 73, 117, 0.13);
}

.feature-card--capability {
  min-height: 254px;
  padding: 24px 18px;
  text-align: center;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(4px);
}

.feature-card__icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 16px;
  object-fit: contain;
}

.feature-card--capability .feature-card__icon {
  width: 60px;
  height: 60px;
}

.feature-card h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
}

.feature-card--capability h3 {
  font-size: 20px;
}

.feature-card p {
  margin: 14px 0 0;
  color: rgba(24, 27, 70, 0.68);
  font-size: 16px;
  line-height: 1.6;
}

.feature-card--capability p {
  max-width: 210px;
  margin: 12px auto 0;
}

.showcase {
  padding-bottom: 20px;
}

.showcase__body {
  position: relative;
  min-height: 1080px;
  margin-top: 92px;
}

.showcase__tabs {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  gap: 18px;
  width: 224px;
}

.showcase__tabs::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: #ededed;
}

.showcase-tab {
  position: relative;
  display: grid;
  grid-template-columns: 12px 42px 1fr;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 6px 0;
  opacity: 0.62;
  color: var(--ink);
  transition: opacity 160ms ease, color 160ms ease;
}

.showcase-tab:hover,
.showcase-tab.is-active {
  opacity: 1;
  color: var(--accent);
}

.showcase-tab__rail {
  width: 3px;
  height: 46px;
  border-radius: 999px;
  background: transparent;
}

.showcase-tab.is-active .showcase-tab__rail {
  background: var(--accent);
}

.showcase-tab__icon {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.showcase-tab__label {
  text-align: left;
  font-size: 20px;
}

.showcase__panel {
  margin-left: 234px;
}

.showcase-shot {
  padding: 18px;
  border-radius: 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(233, 241, 255, 0.98));
  box-shadow: var(--shadow);
  border: 1px solid rgba(81, 103, 175, 0.12);
}

.showcase-shot img {
  width: 100%;
  border-radius: 24px;
}

.showcase__copy {
  max-width: 840px;
  margin: 28px auto 0;
  text-align: center;
}

.showcase__copy h3 {
  margin: 0;
  font-size: 30px;
}

.showcase__copy p {
  margin: 14px 0 0;
  font-size: 20px;
  line-height: 1.7;
  color: rgba(24, 27, 70, 0.8);
}

.cta-banner {
  margin-top: 56px;
  padding: 42px 48px;
  border-radius: 28px;
  background: url("./assets/image/center/banner3-1.png") center center / cover no-repeat;
  box-shadow: var(--shadow);
}

.cta-banner p {
  margin: 0;
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.6;
}

.cta-banner__actions {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.footer {
  background: var(--footer);
  color: #fff;
  padding: 46px 0 42px;
}

.footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px;
  gap: 40px 90px;
}

.footer__info {
  display: grid;
  gap: 20px;
}

.footer__row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 16px;
}

.footer__icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.footer__qr {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 12px;
}

.footer__qr p,
.footer__qr span {
  margin: 0;
  font-size: 16px;
}

.footer__qr-image {
  width: 138px;
  height: 138px;
  border-radius: 16px;
  background: #fff;
}

.footer__bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  padding-top: 30px;
  border-top: 1px solid rgba(216, 216, 216, 0.6);
  font-size: 16px;
}

.footer__link {
  color: #fff;
  border-bottom: 1px solid transparent;
}

.footer__link:hover {
  border-color: rgba(216, 216, 216, 0.75);
}

.contact-float {
  position: fixed;
  top: 240px;
  right: 24px;
  z-index: 15;
  width: 48px;
  min-height: 146px;
  padding: 16px 0 18px;
  border-radius: 24px;
  background: #6b66ff;
  color: #fff;
  box-shadow: 0 16px 30px rgba(53, 72, 164, 0.18);
}

.contact-float:hover {
  background: #423bff;
}

.contact-float__icon {
  width: 20px;
  height: 20px;
  margin: 0 auto;
}

.contact-float__text {
  display: block;
  width: 14px;
  margin: 16px auto 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.42;
}

.contact-float__card {
  position: absolute;
  top: 0;
  right: 64px;
  display: none;
  width: 188px;
  padding: 16px;
  border-radius: 16px;
  background: #423bff;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.16);
  text-align: left;
}

.contact-float__card strong,
.contact-float__card span {
  display: block;
}

.contact-float__card strong {
  font-size: 15px;
}

.contact-float__card span {
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.88);
}

.contact-float__qr {
  width: 156px;
  height: 156px;
  margin-top: 12px;
  border-radius: 14px;
  background: #fff;
}

.contact-float:hover .contact-float__card {
  display: block;
}

@media (max-width: 1180px) {
  .hero__content {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    min-height: 540px;
    margin-top: 20px;
  }

  .card-grid--advantages {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-grid--capabilities {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .showcase__body {
    min-height: auto;
  }

  .showcase__tabs {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: auto;
    margin-bottom: 28px;
  }

  .showcase__tabs::before {
    display: none;
  }

  .showcase__panel {
    margin-left: 0;
  }

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

@media (max-width: 820px) {
  .container {
    width: min(var(--container), calc(100% - 28px));
  }

  .nav {
    flex-wrap: wrap;
  }

  .nav__links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 10px;
  }

  .nav__link {
    white-space: nowrap;
  }

  .hero {
    min-height: auto;
    padding-bottom: 70px;
  }

  .hero__text {
    font-size: 16px;
  }

  .hero__metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__visual {
    min-height: 360px;
  }

  .speech {
    transform: scale(0.82);
    transform-origin: right top;
  }

  .hero-shot {
    left: 0;
    right: 0;
    bottom: 0;
    transform: none;
  }

  .card-grid--advantages,
  .card-grid--capabilities {
    grid-template-columns: 1fr;
  }

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

  .showcase-tab__label {
    font-size: 17px;
  }

  .cta-banner {
    padding: 30px 22px;
  }

  .cta-banner p,
  .showcase__copy p {
    font-size: 18px;
  }

  .contact-float {
    right: 12px;
    top: auto;
    bottom: 22px;
  }
}