:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #f8fbff;
  --text: #10233f;
  --text-soft: #59708d;
  --line: #d8e3f2;
  --primary: #0b57d0;
  --primary-deep: #083b96;
  --accent: #16a3ff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 18px 48px rgba(11, 34, 61, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(22, 163, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #f7faff 0%, #eef4fb 100%);
  line-height: 1.6;
}

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

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

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(216, 227, 242, 0.9);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 10px 24px rgba(11, 87, 208, 0.22);
}

.brand-text strong {
  display: block;
  font-size: 1rem;
  line-height: 1.1;
}

.brand-text span {
  display: block;
  color: var(--text-soft);
  font-size: 0.8rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--text-soft);
  font-size: 0.96rem;
  font-weight: 600;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
}

.menu-toggle.is-open {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 14px 28px rgba(11, 87, 208, 0.24);
}

.menu-toggle.is-open:hover {
  background: #0a50bf;
  border-color: #0a50bf;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  transition: 0.25s ease;
  cursor: pointer;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 14px 30px rgba(11, 87, 208, 0.22);
}

.button-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(11, 87, 208, 0.28);
}

.button-secondary {
  color: var(--primary);
  border-color: rgba(11, 87, 208, 0.18);
  background: rgba(255, 255, 255, 0.85);
}

.button-secondary:hover {
  border-color: rgba(11, 87, 208, 0.35);
  background: #fff;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 76px 0 72px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(22, 163, 255, 0.18), transparent 18%),
    radial-gradient(circle at 10% 10%, rgba(11, 87, 208, 0.12), transparent 25%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 430px);
  gap: 44px;
  align-items: start;
}

.hero-grid > * {
  min-width: 0;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(11, 87, 208, 0.08);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.85rem;
}

.hero h1 {
  margin: 18px 0 14px;
  max-width: 100%;
  font-size: clamp(2.35rem, 3.8vw, 3.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.hero-title-line {
  display: block;
  line-height: 1.18;
}

.hero-title-line:first-child {
  padding-bottom: 0.14em;
}

.hero-title-line + .hero-title-line {
  margin-top: 0.08em;
}

.hero p {
  margin: 0;
  max-width: 620px;
  color: var(--text-soft);
  font-size: 1rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(216, 227, 242, 0.95);
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 600;
}

.hero-note {
  margin-top: 14px;
  max-width: 520px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.hero-panel,
.info-panel,
.cta-panel {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(216, 227, 242, 0.9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 22px;
}

.hero-panel-stack {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-panel-title {
  margin: 10px 0 6px;
  font-size: 1.28rem;
  line-height: 1.24;
}

.hero-panel-text {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

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

.kpi-card {
  padding: 16px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #ffffff 0%, #f6fbff 100%);
  border: 1px solid rgba(216, 227, 242, 0.9);
}

.kpi-card strong {
  display: block;
  font-size: 1.65rem;
  line-height: 1.1;
}

.kpi-card span {
  color: var(--text-soft);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.hero-proof-list {
  display: grid;
  gap: 10px;
}

.hero-proof-item {
  display: grid;
  grid-template-columns: 3.25em minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 4px;
  align-items: start;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(248, 251, 255, 0.86);
  border: 1px solid rgba(216, 227, 242, 0.9);
}

.hero-proof-item strong {
  margin: 0;
  min-width: 0;
  color: var(--primary-deep);
  font-size: 0.92rem;
  white-space: nowrap;
}

.hero-proof-item span {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.86rem;
  line-height: 1.45;
}

.section {
  padding: 72px 0;
}

.hero-trust {
  padding-top: 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.75) 0%, rgba(247, 250, 255, 0.9) 100%);
  border-top: 1px solid rgba(216, 227, 242, 0.65);
  border-bottom: 1px solid rgba(216, 227, 242, 0.65);
}

.section-head {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  line-height: 1.15;
  max-width: 18em;
  text-wrap: balance;
}

.section-head p {
  margin: 0;
  color: var(--text-soft);
  font-size: 1rem;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 18px;
}

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

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

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

.card {
  height: 100%;
  padding: 24px;
  background: var(--surface);
  border: 1px solid rgba(216, 227, 242, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 24px rgba(16, 35, 63, 0.04);
}

.card h3,
.card h4 {
  margin: 0 0 12px;
}

.card h3 {
  font-size: 1.18rem;
  line-height: 1.35;
}

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

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(11, 87, 208, 0.08);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--text-soft);
}

.list li + li {
  margin-top: 8px;
}

.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: auto -20px -20px auto;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 163, 255, 0.16), transparent 70%);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(16, 35, 63, 0.05);
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 600;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.trust-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(216, 227, 242, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 28px rgba(16, 35, 63, 0.05);
}

.trust-card h3 {
  margin: 0 0 10px;
  font-size: 1.06rem;
}

.trust-card p {
  margin: 0;
  color: var(--text-soft);
}

.split-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric-band .card {
  text-align: center;
}

.metric-band strong {
  display: block;
  margin-bottom: 6px;
  font-size: 2rem;
  color: var(--primary);
}

.timeline {
  position: relative;
  display: grid;
  gap: 14px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(11, 87, 208, 0.22), rgba(22, 163, 255, 0.22));
}

.timeline-item {
  position: relative;
  padding: 4px 0 4px 46px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 11px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--primary);
}

.timeline-item h4 {
  margin: 0 0 6px;
}

.timeline-item p {
  margin: 0;
  color: var(--text-soft);
}

.cta-block {
  padding: 32px;
  background: linear-gradient(135deg, #0a3a95, #0d68d8 60%, #16a3ff);
  color: #fff;
  border-radius: var(--radius-xl);
  box-shadow: 0 22px 44px rgba(8, 59, 150, 0.24);
}

.cta-block p {
  color: rgba(255, 255, 255, 0.82);
}

.footer {
  padding: 28px 0 42px;
  background: #0d1728;
  color: rgba(255, 255, 255, 0.74);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 18px;
}

.footer h4 {
  margin: 0 0 12px;
  color: #fff;
}

.footer p,
.footer li,
.footer a {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.94rem;
}

.footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer li + li {
  margin-top: 8px;
}

.footer-bottom {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-item strong {
  display: block;
  margin-bottom: 8px;
}

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

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.input,
.textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(216, 227, 242, 0.95);
  background: #fff;
  color: var(--text);
  font: inherit;
}

.textarea {
  min-height: 128px;
  resize: vertical;
}

.notice {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.12);
  color: #8a5a00;
  border: 1px solid rgba(245, 158, 11, 0.22);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 1440px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 440px);
  }
}

@media (max-width: 1280px) {
  .hero h1 {
    font-size: clamp(2.4rem, 4.8vw, 4.1rem);
  }
}

@media (max-width: 1024px) {
  .split-panel,
  .contact-grid,
  .form-grid,
  .footer-grid,
  .metric-band {
    grid-template-columns: 1fr 1fr;
  }

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

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav-bar {
    align-items: flex-start;
    padding: 14px 0;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: none;
  }

  .site-header.menu-enhanced .menu-toggle {
    display: inline-flex;
  }

  .site-header.menu-enhanced .nav-actions .button:not(.menu-toggle) {
    display: none;
  }

  .nav-links {
    display: flex;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-top: 12px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(216, 227, 242, 0.95);
    border-radius: 18px;
    box-shadow: 0 18px 36px rgba(16, 35, 63, 0.08);
  }

  .site-header.menu-enhanced .nav-links {
    display: none;
  }

  .site-header.menu-enhanced .nav-links.open {
    display: flex;
  }

  .nav-wrap {
    flex: 1 0 100%;
    width: 100%;
  }

  .hero,
  .section {
    padding: 56px 0;
  }

  .hero-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .split-panel,
  .metric-band,
  .contact-grid,
  .form-grid,
  .footer-grid,
  .trust-strip {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-panel,
  .card,
  .cta-block,
  .trust-card {
    padding: 20px;
  }

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

  .hero-proof-item {
    grid-template-columns: 1fr;
    row-gap: 4px;
  }

  .hero-proof-item strong {
    white-space: normal;
  }

  .kpi-card {
    min-width: 0;
  }

  .kpi-card strong {
    font-size: 1.55rem;
  }
}