:root {
  --blue-950: #071a3d;
  --blue-900: #0b2d68;
  --blue-700: #1264c8;
  --blue-600: #1673e6;
  --blue-100: #e9f3ff;
  --cyan-500: #18b8d8;
  --ink: #12213a;
  --muted: #64748b;
  --line: #d8e3f2;
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --shadow: 0 24px 70px rgba(7, 26, 61, 0.18);
  color-scheme: light;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  line-height: 1.65;
}

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

svg {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 12px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(216, 227, 242, 0.78);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: clamp(176px, 20vw, 260px);
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  color: #31435f;
  font-size: 14px;
}

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

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--blue-600);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--blue-900);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  align-items: center;
  gap: clamp(32px, 5vw, 76px);
  min-height: calc(100vh - 72px);
  padding: clamp(52px, 8vw, 96px) clamp(20px, 5vw, 72px);
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 16%, rgba(24, 184, 216, 0.18), transparent 28%),
    linear-gradient(135deg, #f7fbff 0%, #eef6ff 48%, #ffffff 100%);
}

.hero-content {
  max-width: 760px;
}

.section-kicker {
  margin: 0 0 12px;
  color: var(--blue-700);
  font-size: 14px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  color: var(--blue-950);
  font-size: clamp(38px, 6.2vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p:not(.section-kicker) {
  max-width: 670px;
  margin-bottom: 30px;
  color: #3d506f;
  font-size: clamp(16px, 1.55vw, 19px);
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 700;
}

.primary-action {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-700), var(--blue-600));
  box-shadow: 0 14px 30px rgba(18, 100, 200, 0.26);
}

.secondary-action {
  color: var(--blue-900);
  border: 1px solid rgba(18, 100, 200, 0.24);
  background: rgba(255, 255, 255, 0.72);
}

.hero-visual {
  position: relative;
  min-width: 0;
}

.hero-visual::before {
  position: absolute;
  inset: 8% -12% -10% 14%;
  content: "";
  background: linear-gradient(135deg, rgba(22, 115, 230, 0.24), rgba(24, 184, 216, 0.14));
  clip-path: polygon(8% 0, 100% 16%, 88% 100%, 0 82%);
}

.dashboard-window {
  position: relative;
  width: min(100%, 620px);
  margin-left: auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid #d8e3f2;
  background: #f8fbff;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #9fb5d2;
}

.window-bar span:first-child {
  background: #16a3db;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: clamp(18px, 4vw, 34px);
}

.metric-panel,
.chart-panel,
.flow-panel {
  min-height: 142px;
  border: 1px solid #dbe7f6;
  border-radius: 8px;
  background: #fff;
}

.metric-panel {
  padding: 20px;
}

.metric-panel b,
.metric-panel small {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.metric-panel strong {
  display: block;
  margin: 8px 0 4px;
  color: var(--blue-900);
  font-size: 42px;
  line-height: 1;
}

.metric-panel.accent {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-900), var(--blue-600));
}

.metric-panel.accent b,
.metric-panel.accent small,
.metric-panel.accent strong {
  color: #fff;
}

.chart-panel {
  display: flex;
  align-items: end;
  justify-content: space-between;
  grid-column: span 2;
  gap: 12px;
  padding: 20px;
}

.chart-panel span {
  flex: 1;
  min-width: 18px;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, var(--cyan-500), var(--blue-600));
}

.flow-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-column: span 2;
  align-items: center;
  gap: 14px;
  padding: 22px;
}

.flow-panel i {
  position: relative;
  display: block;
  height: 48px;
  border-radius: 8px;
  background: var(--blue-100);
}

.flow-panel i::after {
  position: absolute;
  top: 50%;
  right: -17px;
  width: 20px;
  height: 2px;
  content: "";
  background: #9fc2ec;
}

.flow-panel i:last-child::after {
  display: none;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  max-width: 1180px;
  margin: -34px auto 0;
  padding: 0 clamp(20px, 5vw, 36px);
  position: relative;
  z-index: 3;
}

.proof-strip div {
  min-height: 110px;
  padding: 24px;
  background: #fff;
  box-shadow: 0 10px 40px rgba(7, 26, 61, 0.09);
}

.proof-strip div:first-child {
  border-radius: 8px 0 0 8px;
}

.proof-strip div:last-child {
  border-radius: 0 8px 8px 0;
}

.proof-strip strong,
.proof-strip span {
  display: block;
}

.proof-strip strong {
  color: var(--blue-700);
  font-size: 30px;
  line-height: 1.1;
}

.proof-strip span {
  margin-top: 8px;
  color: var(--muted);
}

.section {
  padding: clamp(72px, 9vw, 116px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 1180px;
  margin: 0 auto 34px;
}

.section-heading h2 {
  margin-bottom: 0;
  color: var(--blue-950);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

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

.overview-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(28px, 5vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
}

.overview-copy {
  color: #31435f;
  font-size: 17px;
}

.belief-list {
  display: grid;
  gap: 16px;
}

.belief-list article,
.capability-grid article,
.service-grid article,
.solution-list article,
.support-steps article,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.belief-list article {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0 18px;
  padding: 22px;
}

.belief-list span {
  grid-row: span 2;
  color: var(--blue-600);
  font-size: 28px;
  font-weight: 800;
}

.belief-list h3,
.capability-grid h3,
.service-grid h3,
.solution-main h3,
.solution-list h3,
.support-steps h3,
.contact-panel h3 {
  margin-bottom: 8px;
  color: var(--blue-950);
  font-size: 20px;
  line-height: 1.28;
}

.belief-list p,
.capability-grid p,
.service-grid p,
.solution-list p,
.support-steps p,
.contact-panel p {
  margin-bottom: 0;
  color: var(--muted);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.capability-grid article {
  position: relative;
  min-height: 286px;
  padding: 28px;
  overflow: hidden;
}

.capability-grid article::after {
  position: absolute;
  right: -26px;
  bottom: -34px;
  width: 116px;
  height: 116px;
  content: "";
  border-radius: 50%;
  background: rgba(22, 115, 230, 0.08);
}

.capability-grid span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--blue-600);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.capability-grid h3,
.capability-grid p {
  position: relative;
  z-index: 1;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.timeline article {
  position: relative;
  min-height: 230px;
  padding: 28px 22px;
  border-top: 4px solid var(--blue-600);
  border-radius: 0 0 8px 8px;
  background: #fff;
  box-shadow: 0 16px 44px rgba(7, 26, 61, 0.06);
}

.timeline time {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--blue-700);
  font-size: 28px;
  font-weight: 800;
}

.timeline h3 {
  margin-bottom: 10px;
  color: var(--blue-950);
  font-size: 20px;
}

.timeline p {
  color: var(--muted);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.service-grid article {
  min-height: 255px;
  padding: 26px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-grid article:hover {
  border-color: rgba(18, 100, 200, 0.34);
  box-shadow: 0 18px 48px rgba(7, 26, 61, 0.09);
  transform: translateY(-4px);
}

.service-icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  place-items: center;
  border-radius: 8px;
  background: var(--blue-100);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--blue-700);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dark {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 26, 61, 0.96), rgba(11, 45, 104, 0.96)),
    var(--blue-950);
}

.dark .section-kicker {
  color: #7dd8ee;
}

.dark .section-heading h2,
.dark h3 {
  color: #fff;
}

.solution-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(28px, 5vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
}

.solution-main {
  align-self: start;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.solution-main p,
.solution-main li {
  color: #d6e5f7;
}

.solution-main ul {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding-left: 20px;
}

.solution-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.solution-list article {
  min-height: 178px;
  padding: 24px;
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
}

.solution-list p {
  color: #c8d9ee;
}

.case-section {
  background: linear-gradient(180deg, #fff 0%, #f5f8fc 100%);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.case-card {
  display: flex;
  flex-direction: column;
  min-height: 420px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 16px 44px rgba(7, 26, 61, 0.06);
}

.case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.case-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 8px;
  color: var(--blue-700);
  background: var(--blue-100);
  font-size: 13px;
  font-weight: 700;
}

.case-meta strong {
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.case-card h3 {
  margin-bottom: 14px;
  color: var(--blue-950);
  font-size: 21px;
  line-height: 1.3;
}

.case-card p {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 15px;
}

.case-card p:last-child {
  margin-bottom: 0;
}

.case-card b {
  color: var(--blue-900);
}

.support-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(24px, 4vw, 52px);
  max-width: 1180px;
  margin: 0 auto;
}

.support-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.support-steps article {
  position: relative;
  min-height: 198px;
  padding: 26px;
}

.support-steps span {
  display: inline-grid;
  width: 36px;
  height: 36px;
  margin-bottom: 16px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--blue-700);
  font-weight: 800;
}

.contact-panel {
  align-self: stretch;
  padding: 30px;
  background: linear-gradient(180deg, var(--blue-100), #fff);
}

.contact-panel .primary-action {
  margin-top: 20px;
}

.contact-section {
  background:
    linear-gradient(180deg, #fff 0%, #f4f9ff 100%);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: clamp(24px, 4vw, 52px);
  max-width: 1180px;
  margin: 0 auto;
}

.contact-card,
.qr-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(7, 26, 61, 0.07);
}

.contact-card {
  padding: clamp(28px, 4vw, 42px);
}

.contact-card h3,
.qr-card h3 {
  margin-bottom: 10px;
  color: var(--blue-950);
  font-size: 24px;
  line-height: 1.28;
}

.contact-card p,
.qr-card p {
  color: var(--muted);
}

.contact-info {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.contact-info div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.contact-info span {
  color: var(--muted);
  font-size: 14px;
}

.contact-info strong {
  color: var(--blue-950);
  font-size: 17px;
  line-height: 1.45;
}

.contact-info a {
  color: var(--blue-700);
}

.qr-card {
  align-self: start;
  padding: 26px;
  text-align: center;
}

.qr-card img {
  display: block;
  width: min(100%, 280px);
  height: auto;
  margin: 0 auto 22px;
  border: 1px solid #eef3f8;
  border-radius: 8px;
}

.diagnosis-section {
  background:
    linear-gradient(135deg, rgba(7, 26, 61, 0.97), rgba(11, 45, 104, 0.94)),
    var(--blue-950);
}

.diagnosis-section .section-kicker {
  color: #7dd8ee;
}

.diagnosis-section .section-heading h2 {
  color: #fff;
}

.diagnosis-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(26px, 5vw, 64px);
  max-width: 1180px;
  margin: 0 auto;
}

.diagnosis-copy h3 {
  margin-bottom: 14px;
  color: #fff;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.18;
}

.diagnosis-copy p {
  color: #d6e5f7;
  font-size: 17px;
}

.diagnosis-benefits {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.diagnosis-benefits article {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.diagnosis-benefits span {
  display: inline-grid;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--blue-600);
  font-weight: 800;
}

.diagnosis-benefits strong {
  color: #fff;
}

.diagnosis-form {
  display: grid;
  gap: 18px;
  padding: clamp(24px, 4vw, 36px);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.diagnosis-form fieldset {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
}

.diagnosis-form legend,
.diagnosis-form label {
  color: var(--blue-950);
  font-weight: 700;
}

.diagnosis-form fieldset label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  font-weight: 600;
}

.diagnosis-form input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--blue-700);
}

.diagnosis-form textarea,
.diagnosis-form input[type="text"] {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.diagnosis-form textarea:focus,
.diagnosis-form input[type="text"]:focus {
  outline: 3px solid rgba(22, 115, 230, 0.16);
  border-color: var(--blue-600);
}

.diagnosis-form textarea {
  resize: vertical;
}

.diagnosis-form button {
  width: 100%;
  border: 0;
  cursor: pointer;
}

.diagnosis-form button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.diagnosis-status {
  min-height: 24px;
  margin: 0;
  color: var(--blue-700);
  font-weight: 700;
}

.diagnosis-status.is-error {
  color: #b42318;
}

.form-hp {
  position: absolute;
  left: -9999px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 34px clamp(20px, 5vw, 72px);
  color: #dceafd;
  background: var(--blue-950);
}

.site-footer p {
  margin: 6px 0 0;
  color: #aebfda;
}

.site-footer a {
  color: #fff;
  white-space: nowrap;
}

@media (max-width: 1020px) {
  .hero,
  .overview-layout,
  .solution-layout,
  .support-layout,
  .diagnosis-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .dashboard-window {
    margin: 0;
  }

  .proof-strip,
  .timeline,
  .capability-grid,
  .case-grid,
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-strip {
    margin-top: 0;
  }

  .proof-strip div:first-child,
  .proof-strip div:last-child {
    border-radius: 0;
  }

  .support-layout {
    align-items: stretch;
  }
}

@media (max-width: 1120px) {
  .site-header {
    min-height: 66px;
    padding: 10px 18px;
  }

  .brand-logo {
    width: clamp(148px, 42vw, 190px);
  }

  .nav-toggle {
    display: block;
    flex: 0 0 auto;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 22px 52px rgba(7, 26, 61, 0.16);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .site-nav a::after {
    display: none;
  }
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 52px;
  }

  .dashboard-grid,
  .solution-list,
  .support-steps {
    grid-template-columns: 1fr;
  }

  .chart-panel,
  .flow-panel {
    grid-column: auto;
  }

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

  .flow-panel i::after {
    display: none;
  }

  .proof-strip,
  .timeline,
  .capability-grid,
  .case-grid,
  .service-grid {
    grid-template-columns: 1fr;
    padding-right: 0;
    padding-left: 0;
  }

  .proof-strip div {
    min-height: 88px;
    box-shadow: none;
    border-bottom: 1px solid var(--line);
  }

  .section {
    padding-top: 66px;
    padding-bottom: 66px;
  }

  .belief-list article {
    grid-template-columns: 1fr;
  }

  .belief-list span {
    margin-bottom: 8px;
  }

  .timeline article,
  .capability-grid article,
  .case-card,
  .service-grid article,
  .support-steps article {
    min-height: auto;
  }

  .site-footer {
    display: block;
  }

  .site-footer a {
    display: inline-block;
    margin-top: 18px;
  }
}

@media (max-width: 440px) {
  .brand-logo {
    width: 142px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-actions {
    display: grid;
  }

  .dashboard-grid {
    gap: 12px;
    padding: 14px;
  }

  .metric-panel,
  .chart-panel,
  .flow-panel {
    min-height: 126px;
  }

  .metric-panel strong {
    font-size: 34px;
  }

  .contact-info div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .case-meta {
    display: grid;
    justify-content: start;
  }

  .diagnosis-benefits article {
    align-items: flex-start;
  }
}