:root {
  color-scheme: light;
  --ink: #102445;
  --ink-soft: #4d607b;
  --navy: #0b2e66;
  --blue: #1769e0;
  --blue-bright: #2e87ff;
  --cyan: #3fc9d7;
  --line: #dce6f4;
  --surface: #ffffff;
  --surface-soft: #f4f8ff;
  --shadow: 0 24px 70px rgba(24, 75, 147, 0.13);
  --content: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--surface);
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: #fff;
  background: var(--navy);
  border-radius: 10px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(23, 105, 224, 0.45);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(220, 230, 244, 0.85);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.header-inner,
.hero-inner,
.section-inner,
.footer-inner {
  width: min(calc(100% - 48px), var(--content));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  overflow: hidden;
  border-radius: 9px;
  background: linear-gradient(145deg, var(--blue), #63d8e4);
  box-shadow: 0 7px 18px rgba(23, 105, 224, 0.24);
}

.brand-mark::before,
.brand-mark span {
  content: "";
  display: block;
  width: 12px;
  height: 12px;
  border: 2px solid #fff;
  border-radius: 50%;
}

.brand-mark span {
  position: absolute;
  right: -2px;
  bottom: -2px;
  opacity: 0.45;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: #40536f;
  font-size: 15px;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 700px;
  overflow: hidden;
  background:
    linear-gradient(rgba(73, 125, 203, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(73, 125, 203, 0.06) 1px, transparent 1px),
    linear-gradient(180deg, #f8fbff 0%, #fff 100%);
  background-size: 56px 56px, 56px 56px, auto;
}

.hero::after {
  position: absolute;
  z-index: -1;
  right: -90px;
  bottom: -220px;
  width: 660px;
  height: 660px;
  border: 1px solid rgba(23, 105, 224, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 70px rgba(23, 105, 224, 0.025), 0 0 0 150px rgba(63, 201, 215, 0.018);
}

.ambient {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(16px);
  pointer-events: none;
}

.ambient-one {
  top: 70px;
  left: -120px;
  width: 360px;
  height: 360px;
  background: rgba(63, 201, 215, 0.12);
}

.ambient-two {
  top: 10px;
  right: 11%;
  width: 300px;
  height: 300px;
  background: rgba(61, 126, 239, 0.13);
}

.hero-inner {
  display: grid;
  min-height: 700px;
  grid-template-columns: minmax(0, 1.08fr) minmax(400px, 0.92fr);
  align-items: center;
  gap: clamp(52px, 7vw, 96px);
  padding-block: 80px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  display: block;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  color: #10284f;
  font-size: clamp(42px, 5vw, 64px);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.hero h1 strong {
  display: inline-block;
  color: var(--blue);
  font-weight: 700;
  white-space: nowrap;
}

.hero-description {
  max-width: 600px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 23px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-weight: 650;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #0f63d8, #318af5);
  box-shadow: 0 14px 30px rgba(23, 105, 224, 0.24);
}

.button-secondary {
  border-color: #cfdced;
  background: rgba(255, 255, 255, 0.72);
}

.button-secondary:hover {
  border-color: #9db7d9;
  box-shadow: 0 10px 24px rgba(34, 74, 130, 0.08);
}

.hero-panel {
  position: relative;
  padding: 22px;
  border: 1px solid rgba(194, 212, 237, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel::before {
  position: absolute;
  z-index: -1;
  top: -12px;
  right: 30px;
  width: 90px;
  height: 24px;
  border-radius: 50%;
  background: rgba(63, 201, 215, 0.25);
  content: "";
  filter: blur(16px);
}

.panel-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-inline: 3px;
  color: #64748c;
  font-size: 13px;
}

.panel-status {
  color: var(--blue);
}

.business-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 15px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}

.business-card + .business-card {
  margin-top: 13px;
}

.business-card-primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(140deg, #0f4ea5, #1f78e5 65%, #3eaec7);
  box-shadow: 0 18px 36px rgba(22, 93, 185, 0.22);
}

.business-index {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 13px;
  color: var(--blue);
  background: #edf5ff;
  font-size: 13px;
  font-weight: 800;
}

.business-card-primary .business-index {
  color: #fff;
  background: rgba(255, 255, 255, 0.17);
}

.business-card h2 {
  margin: 1px 0 5px;
  font-size: 19px;
  line-height: 1.4;
}

.business-card p {
  margin: 0;
  color: #61718a;
  font-size: 14px;
  line-height: 1.65;
}

.business-card-primary p {
  color: rgba(255, 255, 255, 0.77);
}

.panel-foot {
  display: flex;
  align-items: end;
  gap: 7px;
  height: 32px;
  margin-top: 17px;
  padding-inline: 5px;
}

.panel-foot span {
  display: block;
  width: 9px;
  border-radius: 10px;
  background: #d7e5f7;
}

.panel-foot span:nth-child(1) { height: 10px; }
.panel-foot span:nth-child(2) { height: 17px; }
.panel-foot span:nth-child(3) { height: 13px; }
.panel-foot span:nth-child(4) { height: 24px; background: #68bfd5; }
.panel-foot span:nth-child(5) { height: 30px; background: #3e82e9; }

.section {
  padding-block: 112px;
}

.product-section {
  background: #fff;
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(500px, 1.18fr);
  align-items: center;
  gap: clamp(60px, 8vw, 110px);
}

.product-copy h2,
.section-heading h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4.2vw, 54px);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.section-lead {
  margin: 24px 0 0;
  color: #24466f;
  font-size: 22px;
  font-weight: 650;
}

.section-body {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.product-points {
  display: grid;
  margin: 36px 0 0;
  padding: 0;
  gap: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.product-points li {
  display: flex;
  align-items: center;
  gap: 17px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-weight: 650;
}

.product-points span {
  color: #6f93be;
  font-size: 13px;
}

.product-visual {
  position: relative;
  margin: 0;
  padding: 14px;
  border: 1px solid #d9e5f5;
  border-radius: 30px;
  background: linear-gradient(145deg, #f7faff, #edf5ff);
  box-shadow: var(--shadow);
}

.product-visual img {
  width: 100%;
  border-radius: 20px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-visual figcaption {
  padding: 12px 6px 2px;
  color: #687b96;
  font-size: 13px;
  text-align: center;
}

.concept-label {
  position: absolute;
  z-index: 2;
  top: 28px;
  left: 28px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 999px;
  color: #174d91;
  background: rgba(255, 255, 255, 0.82);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(35, 84, 147, 0.09);
  backdrop-filter: blur(8px);
}

.services-section {
  background: var(--surface-soft);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: end;
  gap: 50px;
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 17px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 54px;
}

.service-card {
  min-height: 260px;
  padding: 30px;
  border: 1px solid #dce7f5;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.service-card:hover {
  border-color: #b9cdeb;
  box-shadow: 0 18px 45px rgba(42, 85, 145, 0.1);
  transform: translateY(-4px);
}

.service-number {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  color: var(--blue);
  background: #eaf3ff;
  font-size: 13px;
  font-weight: 800;
}

.service-card h3 {
  margin: 44px 0 9px;
  font-size: 22px;
}

.service-card p {
  margin: 0;
  color: var(--ink-soft);
}

.contact-section {
  padding-block: 94px;
  background: #fff;
}

.contact-card {
  position: relative;
  display: grid;
  overflow: hidden;
  grid-template-columns: 1fr 0.82fr;
  align-items: center;
  gap: 80px;
  padding: clamp(42px, 6vw, 76px);
  border-radius: 32px;
  color: #fff;
  background:
    radial-gradient(circle at 84% 20%, rgba(69, 209, 216, 0.23), transparent 30%),
    linear-gradient(135deg, #092a5c 0%, #0e4b99 70%, #116ba8 100%);
  box-shadow: 0 28px 70px rgba(11, 46, 102, 0.24);
}

.contact-card::before {
  position: absolute;
  right: -90px;
  bottom: -130px;
  width: 330px;
  height: 330px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 54px rgba(255, 255, 255, 0.035), 0 0 0 108px rgba(255, 255, 255, 0.02);
}

.section-kicker-light {
  color: #82e0ea;
}

.contact-copy p:last-child {
  max-width: 500px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 17px;
}

.contact-address {
  position: relative;
  z-index: 1;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(12px);
}

.contact-address > span {
  display: block;
  margin-bottom: 13px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.email-image-wrap {
  overflow: hidden;
  padding: 4px 12px;
  border-radius: 13px;
  background: #f6f9ff;
}

.email-image-wrap img {
  width: 100%;
}

.contact-address p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 13px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #65758c;
  font-size: 14px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a:hover {
  color: var(--blue);
}

.reveal {
  animation: reveal-up 680ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.reveal-delay {
  animation-delay: 120ms;
}

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

@media (max-width: 980px) {
  .hero-inner,
  .product-layout,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding-block: 88px;
  }

  .hero-panel {
    width: min(100%, 620px);
  }

  .product-layout,
  .contact-card {
    gap: 54px;
  }

  .product-visual {
    width: min(100%, 720px);
  }

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

  .service-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 118px;
  }

  .header-inner,
  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(calc(100% - 32px), var(--content));
  }

  .header-inner {
    min-height: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-block: 13px 11px;
  }

  .brand {
    font-size: 15px;
  }

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

  .site-nav a {
    padding: 4px 0;
  }

  .hero,
  .hero-inner {
    min-height: auto;
  }

  .hero-inner {
    gap: 58px;
    padding-block: 68px 78px;
  }

  .hero h1 {
    font-size: clamp(32px, 9.5vw, 40px);
    letter-spacing: -0.04em;
  }

  .hero h1 strong {
    white-space: normal;
  }

  .hero-description {
    font-size: 16px;
  }

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

  .hero-panel {
    padding: 16px;
    border-radius: 22px;
  }

  .business-card {
    grid-template-columns: 42px 1fr;
    padding: 18px 16px;
  }

  .section {
    padding-block: 82px;
  }

  .product-layout {
    gap: 44px;
  }

  .product-copy h2,
  .section-heading h2,
  .contact-copy h2 {
    font-size: 36px;
  }

  .section-lead {
    font-size: 20px;
  }

  .product-visual {
    padding: 9px;
    border-radius: 22px;
  }

  .product-visual img {
    border-radius: 15px;
  }

  .concept-label {
    top: 20px;
    left: 20px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    margin-top: 36px;
  }

  .service-card,
  .service-card:last-child {
    min-height: auto;
    grid-column: auto;
  }

  .service-card h3 {
    margin-top: 30px;
  }

  .contact-section {
    padding-block: 64px;
  }

  .contact-card {
    gap: 38px;
    padding: 34px 22px;
    border-radius: 24px;
  }

  .contact-address {
    padding: 18px;
  }

  .footer-inner {
    min-height: 104px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;
  }
}

@media (max-width: 430px) {
  .hero-actions {
    grid-template-columns: 1fr;
  }

  .panel-topline {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .business-card p {
    font-size: 13px;
  }

  .email-image-wrap {
    padding-inline: 6px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}