:root {
  --bg: #f2f7ff;
  --bg-soft: #f8fbff;
  --ink: #14233c;
  --ink-soft: #5b6f8b;
  --line: rgba(20, 35, 60, 0.12);
  --line-soft: rgba(255, 255, 255, 0.14);
  --dark: #102947;
  --dark-2: #17385f;
  --blue: #1f8fff;
  --blue-2: #4ca8ff;
  --blue-soft: rgba(31, 143, 255, 0.12);
  --cyan: #28c7ea;
  --white: #ffffff;
  --container: min(1180px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(40, 199, 234, 0.09), transparent 24%),
    radial-gradient(circle at top right, rgba(31, 143, 255, 0.06), transparent 18%),
    linear-gradient(180deg, #edf6ff 0%, #f7fbff 42%, #f2f7ff 100%);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body.menu-open {
  overflow: hidden;
}

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

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

.page-shell {
  min-height: 100vh;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 22px 0;
  background: rgba(242, 247, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: padding 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.site-header.is-scrolled {
  padding: 14px 0;
  border-color: rgba(20, 35, 60, 0.08);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #f4fbff;
  font-family: "Times New Roman", "Songti SC", serif;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-text small {
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
}

.site-nav .nav-cta {
  min-height: 44px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  color: #f4fbff;
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  background: var(--white);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
}

.hero-section {
  position: relative;
  padding: 78px 0 108px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(11, 34, 66, 0.86) 0%, rgba(18, 70, 126, 0.78) 42%, rgba(24, 78, 136, 0.7) 100%),
    radial-gradient(circle at 10% 12%, rgba(121, 211, 255, 0.22), transparent 24%),
    radial-gradient(circle at 88% 16%, rgba(31, 143, 255, 0.18), transparent 22%),
    url("11.png") center center / cover no-repeat;
  color: #f7fbff;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 68px 68px;
  opacity: 0.22;
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  inset: auto auto -120px -60px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(100, 220, 255, 0.2);
  filter: blur(60px);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 52px;
  align-items: center;
}

.hero-kicker,
.section-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid rgba(159, 220, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
  color: #d3eeff;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-head h2,
.about-copy h2,
.contact-copy h2 {
  margin: 22px 0 0;
  font-family: "Times New Roman", "STSong", "Songti SC", serif;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  max-width: 760px;
  font-size: clamp(3.3rem, 6.6vw, 5.6rem);
  line-height: 1.02;
}

.hero-text {
  max-width: 660px;
  margin: 22px 0 0;
  color: rgba(247, 251, 255, 0.82);
  font-size: 1.06rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  min-height: 52px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  color: #f4fbff;
  box-shadow: 0 18px 36px rgba(31, 143, 255, 0.28);
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #f7f9fc;
}

.btn.full {
  width: 100%;
}

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

.hero-tags span {
  min-height: 40px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(181, 229, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(239, 249, 255, 0.92);
  font-size: 0.92rem;
}

.hero-panel {
  padding: 22px;
  border: 1px solid rgba(181, 229, 255, 0.16);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  backdrop-filter: blur(16px);
  box-shadow: 0 28px 60px rgba(10, 35, 70, 0.22);
}

.hero-panel-head span,
.overview-item span,
.service-no,
.meta-row span,
.footer-records,
.footer-records a {
  color: var(--ink-soft);
}

.hero-panel-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.hero-badge,
.hero-metric,
.hero-board-card {
  border: 1px solid rgba(191, 235, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
}

.hero-badge,
.hero-metric {
  padding: 18px 18px 16px;
}

.hero-badge span,
.hero-metric small {
  display: block;
  margin-bottom: 8px;
  color: #a8ddff;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-badge strong,
.hero-metric strong {
  display: block;
  color: #f5fbff;
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.55;
}

.hero-panel-board {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.hero-board-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.hero-board-row.narrow .hero-board-card:first-child {
  transform: translateY(8px);
}

.hero-board-card {
  min-height: 132px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
}

.hero-board-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(118, 208, 255, 0.14), transparent 56%);
  pointer-events: none;
}

.hero-board-card.active {
  background: linear-gradient(180deg, rgba(82, 178, 255, 0.34), rgba(255, 255, 255, 0.08));
}

.hero-board-card.accent {
  background: linear-gradient(180deg, rgba(40, 199, 234, 0.28), rgba(255, 255, 255, 0.08));
}

.hero-board-card strong {
  position: relative;
  z-index: 1;
  color: #f7fbff;
  font-size: 1.02rem;
  font-weight: 600;
}

.hero-board-card span {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: 8px;
  color: rgba(236, 248, 255, 0.78);
  font-size: 0.9rem;
  line-height: 1.65;
}

.hero-panel-note {
  margin-top: 14px;
  padding: 16px 18px;
  border: 1px solid rgba(191, 235, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(240, 249, 255, 0.78);
  font-size: 0.92rem;
  line-height: 1.7;
}

.overview-section {
  padding: 54px 0 18px;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.overview-item {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.overview-item span {
  display: block;
  margin-bottom: 12px;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.overview-item strong,
.service-body h3,
.solution-item h3,
.aside-item strong,
.meta-row strong,
.footer-brand strong {
  display: block;
  font-size: 1.24rem;
  font-weight: 600;
  line-height: 1.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.stat-card {
  padding: 24px 22px;
  border: 1px solid rgba(96, 160, 236, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(244, 250, 255, 0.86));
  box-shadow: 0 18px 36px rgba(43, 94, 160, 0.08);
}

.stat-card strong {
  display: block;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--ink);
}

.stat-card p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  line-height: 1.82;
}

.platform-section {
  padding-top: 62px;
}

.platform-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 30px;
  align-items: center;
}

.platform-copy p {
  margin: 18px 0 0;
  color: var(--ink-soft);
  line-height: 1.92;
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.platform-tags span {
  min-height: 38px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(92, 170, 255, 0.16);
  background: rgba(255, 255, 255, 0.82);
  color: #317de4;
  font-size: 0.92rem;
}

.platform-board {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid rgba(96, 160, 236, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(242, 248, 255, 0.9));
  box-shadow: 0 24px 48px rgba(37, 87, 150, 0.08);
}

.platform-layer {
  padding: 18px;
  border: 1px solid rgba(96, 160, 236, 0.12);
  background: rgba(255, 255, 255, 0.82);
}

.platform-layer.featured {
  background: linear-gradient(180deg, rgba(235, 247, 255, 0.98), rgba(247, 251, 255, 0.92));
}

.platform-layer span {
  display: block;
  margin-bottom: 14px;
  color: #4b89d6;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.platform-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.platform-nodes b {
  min-height: 40px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(31, 143, 255, 0.12), rgba(40, 199, 234, 0.08));
  color: var(--ink);
  font-weight: 600;
}

.section {
  padding: 98px 0;
}

.section-head {
  max-width: 760px;
}

.section-head h2,
.about-copy h2,
.contact-copy h2 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 44px;
}

.service-card {
  min-height: 100%;
  padding: 28px 24px;
  border: 1px solid rgba(96, 160, 236, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(245, 250, 255, 0.9));
  box-shadow: 0 20px 42px rgba(39, 91, 156, 0.08);
}

.service-card .service-no {
  display: inline-block;
  margin-bottom: 18px;
}

.service-no {
  font-family: "Times New Roman", serif;
  font-size: 1rem;
  letter-spacing: 0.16em;
  color: #3d92ff;
}

.service-body p,
.solution-item p,
.about-copy p,
.aside-item p,
.contact-copy p {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.9;
}

.service-points,
.solution-points {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.service-points li,
.solution-points li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.service-points li + li,
.solution-points li + li {
  margin-top: 10px;
}

.service-points li::before,
.solution-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.scenario-section {
  padding-top: 0;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 42px;
}

.scenario-card {
  min-height: 100%;
  padding: 26px 22px;
  border: 1px solid rgba(96, 160, 236, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 255, 0.9));
  box-shadow: 0 20px 40px rgba(37, 87, 150, 0.08);
}

.scenario-card span {
  display: inline-block;
  margin-bottom: 16px;
  color: #4a8be2;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scenario-card h3,
.process-card h3 {
  margin: 0;
  font-size: 1.16rem;
  font-weight: 600;
  line-height: 1.6;
}

.scenario-card p,
.process-card p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  line-height: 1.85;
}

.section-dark {
  background:
    radial-gradient(circle at top right, rgba(40, 199, 234, 0.16), transparent 28%),
    linear-gradient(180deg, #163967 0%, #123055 100%);
  color: #f5f7fa;
}

.section-head-dark .section-kicker {
  border-color: rgba(73, 157, 255, 0.28);
  color: #a9d5ff;
}

.section-head-dark h2,
.section-dark .solution-item h3,
.section-dark .solution-item span {
  color: #f5f7fa;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 36px;
  margin-top: 46px;
}

.solution-item {
  padding: 28px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.solution-item span {
  display: inline-block;
  margin-bottom: 20px;
  color: #97d8ff;
  font-family: "Times New Roman", serif;
  font-size: 0.98rem;
  letter-spacing: 0.16em;
}

.section-dark .solution-item p {
  color: rgba(245, 247, 250, 0.72);
}

.section-dark .solution-points li {
  color: rgba(237, 246, 255, 0.72);
}

.section-dark .solution-points li::before {
  background: linear-gradient(135deg, #8fdcff, #39b6ff);
}

.process-section {
  padding-top: 86px;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.process-card {
  min-height: 100%;
  padding: 24px 20px;
  border: 1px solid rgba(96, 160, 236, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(245, 250, 255, 0.9));
  box-shadow: 0 18px 36px rgba(37, 87, 150, 0.07);
}

.process-card span {
  display: inline-block;
  margin-bottom: 16px;
  color: #4a8be2;
  font-family: "Times New Roman", serif;
  font-size: 0.98rem;
  letter-spacing: 0.16em;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 40px;
  align-items: start;
}

.about-copy p + p {
  margin-top: 14px;
}

.about-aside {
  border-top: 1px solid var(--line);
}

.aside-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.about-extra {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 34px;
}

.extra-card {
  padding: 24px 22px;
  border: 1px solid rgba(96, 160, 236, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(244, 249, 255, 0.88));
  box-shadow: 0 18px 36px rgba(39, 91, 156, 0.08);
}

.extra-card span {
  display: block;
  margin-bottom: 12px;
  color: #4b89d6;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.extra-card strong {
  display: block;
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.7;
}

.contact-section {
  padding: 0 0 96px;
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 36px;
  padding: 38px 0 0;
  border-top: 1px solid var(--line);
}

.contact-meta {
  display: grid;
  gap: 16px;
}

.meta-row {
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
}

.meta-row span {
  display: block;
  margin-bottom: 10px;
  font-size: 0.84rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer {
  background: #14355d;
  color: #f3f6fa;
}

.footer-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 30px 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  text-align: center;
}

.footer-brand p {
  margin: 8px 0 0;
  color: rgba(243, 246, 250, 0.62);
}

.footer-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 108px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2d7cf6, #1aa6d9);
  color: #f7fbff;
  box-shadow: 0 14px 34px rgba(8, 33, 62, 0.22);
}

.footer-records {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  text-align: center;
  gap: 18px 28px;
  padding: 16px 0 24px;
  color: rgba(243, 246, 250, 0.56);
  font-size: 0.9rem;
}

.footer-records a {
  color: rgba(243, 246, 250, 0.68);
}

@media (max-width: 980px) {
  .hero-grid,
  .overview-grid,
  .stats-grid,
  .platform-grid,
  .service-grid,
  .scenario-grid,
  .solution-grid,
  .process-grid,
  .about-grid,
  .about-extra,
  .contact-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .site-header {
    padding: 16px 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 24px;
    right: 24px;
    display: grid;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--line);
    background: rgba(248, 251, 255, 0.98);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .site-header.menu-open .site-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    padding: 14px 16px;
  }

  .site-nav .nav-cta {
    justify-content: center;
  }

  .hero-section {
    padding: 56px 0 82px;
  }

  .hero-board-row,
  .hero-board-row.narrow {
    grid-template-columns: 1fr;
  }

  .hero-board-row.narrow .hero-board-card:first-child {
    transform: none;
  }

  .section {
    padding: 82px 0;
  }
}

@media (max-width: 640px) {
  :root {
    --container: min(100vw - 28px, 1180px);
  }

  .hero-copy h1 {
    font-size: clamp(2.3rem, 11vw, 3.6rem);
  }

  .hero-text,
  .service-body p,
  .solution-item p,
  .about-copy p,
  .aside-item p,
  .contact-copy p {
    font-size: 0.98rem;
  }

  .hero-actions {
    gap: 12px;
  }

  .btn {
    width: 100%;
  }

  .footer-main {
    align-items: center;
  }

  .footer-records {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .footer-top {
    right: 16px;
    bottom: 16px;
    min-width: 96px;
    min-height: 42px;
    padding: 0 16px;
  }
}