:root {
  --ink: #101936;
  --muted: #66708c;
  --line: #e9eef9;
  --blue: #1268ff;
  --violet: #8a52ff;
  --cyan: #24c6dc;
  --bg: #f7faff;
  --shadow: 0 18px 50px rgba(31, 76, 168, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #fff;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(222, 230, 252, 0.9);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1180px, calc(100% - 36px));
  height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: block;
  flex: 0 0 auto;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 10px 24px rgba(18, 104, 255, 0.28);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 58px;
  font-size: 16px;
  font-weight: 700;
}

.nav-links a {
  position: relative;
  padding: 24px 0 20px;
}

.nav-links a::after {
  position: absolute;
  left: 50%;
  bottom: 10px;
  width: 0;
  height: 3px;
  content: "";
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--violet));
  transform: translateX(-50%);
  transition: width 0.2s ease;
}

.nav-links a:hover::after,
.nav-links .active::after {
  width: 32px;
}

.nav-cta,
.primary-btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 26px;
  color: #fff;
  font-weight: 800;
  border-radius: 8px;
  background: linear-gradient(135deg, #075df8, #9a54f7);
  box-shadow: 0 14px 28px rgba(62, 78, 245, 0.25);
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 30%, rgba(157, 113, 255, 0.38), transparent 34%),
    radial-gradient(circle at 45% 18%, rgba(56, 191, 244, 0.22), transparent 28%),
    linear-gradient(105deg, #f8fbff 0%, #eef5ff 45%, #e7ddff 100%);
}

.hero-inner {
  width: min(1180px, calc(100% - 36px));
  min-height: 420px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  align-items: center;
  gap: 40px;
  padding: 52px 0 46px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  color: #1767ff;
  font-size: 14px;
  font-weight: 800;
  border-radius: 8px;
  background: rgba(37, 123, 255, 0.1);
}

.hero h1 {
  max-width: 700px;
  margin: 16px 0 12px;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1.05;
  font-weight: 900;
}

.hero h1::first-letter {
  color: var(--blue);
}

.hero-copy p,
.section-heading p,
.product-copy p,
.about p,
.info-grid p,
.legal-grid p,
.contact-list span,
.footer p {
  color: var(--muted);
  line-height: 1.8;
}

.hero-copy > p {
  margin: 0 0 18px;
  font-size: 19px;
}

.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 18px 0 28px;
  color: #233056;
  font-size: 14px;
  font-weight: 700;
}

.quick-tags span {
  position: relative;
  padding-left: 24px;
}

.quick-tags span::before {
  position: absolute;
  left: 0;
  top: 1px;
  width: 16px;
  height: 16px;
  content: "✓";
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 11px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1268ff, #8a52ff);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.secondary-btn {
  display: inline-flex;
  min-height: 46px;
  min-width: 150px;
  align-items: center;
  justify-content: center;
  color: #242e55;
  font-weight: 800;
  border: 1px solid rgba(114, 90, 255, 0.55);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.75);
}

.hero-visual {
  position: relative;
  min-height: 340px;
  display: grid;
  place-items: center;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(61, 112, 255, 0.18);
  border-radius: 50%;
  transform: rotate(-10deg);
}

.orbit-one {
  width: 360px;
  height: 110px;
  bottom: 36px;
  background: rgba(255, 255, 255, 0.16);
}

.orbit-two {
  width: 470px;
  height: 160px;
  bottom: 14px;
}

.robot {
  position: relative;
  width: 190px;
  height: 245px;
  filter: drop-shadow(0 24px 34px rgba(31, 76, 168, 0.22));
}

.robot-head {
  position: absolute;
  left: 29px;
  top: 16px;
  width: 132px;
  height: 94px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  border: 8px solid #fff;
  border-radius: 46px;
  background: linear-gradient(145deg, #101b57, #071027);
  box-shadow: inset 0 0 28px rgba(23, 127, 255, 0.55);
}

.robot-head span {
  width: 20px;
  height: 34px;
  border-radius: 999px;
  background: #19d9ff;
  box-shadow: 0 0 22px rgba(25, 217, 255, 0.8);
}

.robot-body {
  position: absolute;
  left: 54px;
  top: 108px;
  width: 82px;
  height: 100px;
  border: 8px solid #fff;
  border-radius: 40px 40px 34px 34px;
  background: linear-gradient(180deg, #eef7ff, #cad9ff);
}

.robot-body::after {
  position: absolute;
  left: 50%;
  top: 32px;
  width: 22px;
  height: 22px;
  content: "";
  border: 4px solid #48c9ff;
  border-radius: 50%;
  transform: translateX(-50%);
  background: #f6fbff;
}

.robot-arm {
  position: absolute;
  width: 34px;
  height: 76px;
  border: 8px solid #fff;
  border-radius: 999px;
  background: #dbe7ff;
}

.robot-arm.left {
  left: 22px;
  top: 118px;
  transform: rotate(28deg);
}

.robot-arm.right {
  right: 15px;
  top: 96px;
  transform: rotate(-34deg);
}

.floating-card {
  position: absolute;
  min-width: 88px;
  padding: 12px 14px;
  color: #435177;
  font-size: 14px;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.54);
  box-shadow: 0 18px 35px rgba(49, 72, 142, 0.14);
  backdrop-filter: blur(14px);
}

.card-chat {
  left: 30px;
  top: 54px;
}

.card-doc {
  right: 12px;
  top: 94px;
}

.card-chart {
  left: 72px;
  bottom: 78px;
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 58px 0;
}

.section-heading {
  margin-bottom: 26px;
  text-align: center;
}

.section-heading h2,
.product-copy h2,
.about h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.2;
}

.section-heading p {
  margin: 10px auto 0;
  max-width: 640px;
}

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

.feature-card {
  min-height: 156px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 15px 34px rgba(30, 68, 132, 0.08);
}

.feature-card h3 {
  margin: 14px 0 8px;
  font-size: 17px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: inline-grid;
  place-items: center;
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  border-radius: 14px;
}

.blue {
  background: linear-gradient(135deg, #1268ff, #8a52ff);
}

.cyan {
  background: linear-gradient(135deg, #28b9ff, #0965ff);
}

.coral {
  background: linear-gradient(135deg, #ff8f6d, #ff5f38);
}

.violet {
  background: linear-gradient(135deg, #a45cff, #5b55ff);
}

.green {
  background: linear-gradient(135deg, #20d0a2, #11a96e);
}

.indigo {
  background: linear-gradient(135deg, #2578ff, #2548d8);
}

.amber {
  background: linear-gradient(135deg, #f6b63f, #e87822);
}

.rose {
  background: linear-gradient(135deg, #ff6b8f, #d9366e);
}

.product-band {
  display: grid;
  grid-template-columns: 0.8fr 1.6fr;
  gap: 48px;
  align-items: center;
  padding: 54px max(18px, calc((100vw - 1180px) / 2));
  background: linear-gradient(180deg, #f7fbff, #edf5ff);
}

.product-copy p {
  max-width: 440px;
}

.compact {
  min-height: 44px;
  padding: 0 22px;
}

.app-preview {
  min-height: 250px;
  display: grid;
  grid-template-columns: 150px 1fr;
  overflow: hidden;
  border: 1px solid rgba(82, 125, 220, 0.22);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow);
}

.app-preview aside {
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: #66708c;
  font-size: 13px;
  background: rgba(236, 244, 255, 0.9);
}

.app-preview aside strong {
  color: var(--ink);
  font-size: 17px;
}

.app-preview aside span {
  padding: 8px 10px;
  border-radius: 8px;
}

.app-preview aside .selected {
  color: #1268ff;
  font-weight: 800;
  background: #ddeaff;
}

.preview-main {
  padding: 22px;
}

.preview-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  font-weight: 800;
}

.search {
  min-width: 130px;
  padding: 8px 12px;
  color: #a4adc2;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  background: #f5f7fb;
}

.tool-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.tool-list div {
  min-height: 72px;
  padding: 16px;
  border: 1px solid #edf1fa;
  border-radius: 10px;
  background: #fff;
}

.tool-list b,
.tool-list span {
  display: block;
}

.tool-list span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.about {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 54px;
  align-items: center;
}

.about h2 {
  margin-top: 14px;
}

.about p {
  margin: 0;
  font-size: 17px;
}

.service-detail {
  padding-bottom: 34px;
}

.info-grid,
.legal-grid {
  display: grid;
  gap: 16px;
}

.info-grid {
  grid-template-columns: repeat(4, 1fr);
}

.legal-grid {
  grid-template-columns: repeat(2, 1fr);
}

.info-grid article,
.legal-grid article {
  min-height: 160px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 15px 34px rgba(30, 68, 132, 0.07);
}

.info-grid h3,
.legal-grid h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.info-grid p,
.legal-grid p {
  margin: 0;
  font-size: 14px;
}

.legal-grid p + p {
  margin-top: 10px;
}

.legal-section {
  width: 100%;
  max-width: none;
  padding: 58px max(18px, calc((100vw - 1180px) / 2));
  background: #f7fbff;
}

.privacy-section {
  padding-top: 58px;
}

.disclaimer-section {
  width: 100%;
  max-width: none;
  padding: 58px max(18px, calc((100vw - 1180px) / 2));
  background: #f7fbff;
}

.contact-section {
  padding-top: 54px;
}

.contact-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.contact-list div {
  min-height: 112px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 15px 34px rgba(30, 68, 132, 0.07);
}

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

.contact-list strong {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 15px;
}

.contact-list span {
  font-size: 14px;
}

.footer {
  color: #dfe8ff;
  background:
    radial-gradient(circle at 10% 10%, rgba(25, 113, 255, 0.22), transparent 28%),
    linear-gradient(135deg, #061735, #0b1c43 55%, #081226);
  display: flex;
  flex-direction: column;
}

.footer-inner {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.1fr;
  gap: 40px;
  padding: 50px 0 32px;
}

.footer .brand {
  color: #fff;
}

.footer h3 {
  margin: 0 0 14px;
  color: #fff;
  font-size: 16px;
}

.footer a,
.footer p {
  display: block;
  margin: 0 0 8px;
  color: #c9d4ee;
  font-size: 14px;
}

.copyright {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 18px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  align-self: center;
}

@media (max-width: 980px) {
  .nav-links {
    gap: 26px;
  }

  .hero-inner,
  .product-band,
  .about {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-top: 38px;
  }

  .feature-grid,
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .nav {
    height: auto;
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .brand {
    font-size: 21px;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 14px;
  }

  .nav-links a {
    padding: 8px 0 12px;
  }

  .nav-links a::after {
    bottom: 4px;
  }

  .nav-cta {
    min-height: 40px;
    padding: 0 16px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-copy > p {
    font-size: 16px;
  }

  .hero-visual {
    min-height: 300px;
  }

  .orbit-one {
    width: 290px;
  }

  .orbit-two {
    width: 340px;
  }

  .feature-grid,
  .tool-list,
  .info-grid,
  .legal-grid,
  .contact-list,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .product-band {
    gap: 26px;
  }

  .app-preview {
    grid-template-columns: 1fr;
  }

  .app-preview aside {
    display: none;
  }

  .preview-main {
    padding: 16px;
  }

  .about {
    gap: 20px;
  }
}