:root {
  --ink: #0f243f;
  --muted: #5d6f85;
  --soft: #eef7fb;
  --line: #dce8f1;
  --brand: #118ccf;
  --brand-deep: #17429a;
  --accent: #16b7a3;
  --gold: #f4a640;
  --bg: #f7fbfd;
  --white: #ffffff;
  --shadow: 0 20px 54px rgba(15, 36, 63, 0.10);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(220, 232, 241, 0.92);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1180px, calc(100% - 48px));
  height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 180px;
}

.brand img {
  display: block;
  width: 132px;
  height: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 25px;
  color: #2f455f;
  font-size: 15px;
  white-space: nowrap;
}

.nav-link,
.dropdown-trigger {
  display: inline-flex;
  align-items: center;
  height: 76px;
  border: 0;
  padding: 0;
  color: inherit;
  background: transparent;
  font: inherit;
}

.nav-link.active,
.dropdown-trigger.active {
  color: var(--brand-deep);
  font-weight: 800;
}

.dropdown {
  position: relative;
}

.dropdown-trigger::after {
  content: "";
  width: 6px;
  height: 6px;
  margin-left: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.dropdown-menu {
  position: absolute;
  top: 68px;
  left: 50%;
  width: 238px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.dropdown-menu a {
  display: block;
  border-radius: 6px;
  padding: 11px 12px;
  color: #36506b;
  font-size: 14px;
}

.dropdown-menu a:hover,
.dropdown-menu a.current {
  color: var(--brand-deep);
  background: #eef7fb;
  font-weight: 800;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: var(--radius);
  padding: 0 18px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 800;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  box-shadow: 0 12px 28px rgba(17, 140, 207, 0.22);
}

.btn-ghost {
  color: var(--brand-deep);
  border-color: rgba(17, 140, 207, 0.24);
  background: rgba(255, 255, 255, 0.78);
}

.hero {
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(17, 140, 207, 0.11), transparent 36%),
    linear-gradient(180deg, #fff 0%, #f7fbfd 100%);
}

.hero-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 72px 0 54px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(390px, 0.78fr);
  gap: 52px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--accent);
}

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

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  color: #071b33;
  font-size: clamp(32px, 3.7vw, 52px);
  line-height: 1.1;
  font-weight: 900;
}

.hero-title-compact {
  max-width: 820px;
  font-size: clamp(30px, 3.3vw, 46px);
  line-height: 1.12;
}

.lead {
  max-width: 720px;
  margin-bottom: 0;
  color: #40536b;
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
  max-width: 690px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px;
  background: rgba(255, 255, 255, 0.76);
}

.metric b {
  display: block;
  color: var(--brand-deep);
  font-size: 21px;
  margin-bottom: 4px;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
}

.hero-card {
  border: 1px solid rgba(220, 232, 241, 0.96);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.hero-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  color: #536981;
  font-size: 14px;
  font-weight: 800;
}

.hero-card-body {
  padding: 22px;
}

.flow-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.flow-list li {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border-radius: var(--radius);
  background: #f3f8fc;
}

.flow-list time {
  color: var(--brand);
  font-weight: 900;
}

.flow-list strong {
  color: #18304d;
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0;
}

.section.alt {
  width: 100%;
  background: #fff;
}

.section.alt > .section-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.section-title {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-title .label {
  margin-bottom: 9px;
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
}

.section-title h2 {
  margin-bottom: 12px;
  color: #09213e;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.18;
}

.section-title p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 16px;
}

.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 {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  background: #fff;
}

.card strong {
  display: block;
  margin-bottom: 8px;
  color: #102843;
  font-size: 18px;
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.capability {
  position: relative;
  padding-top: 46px;
}

.capability::before {
  content: attr(data-mark);
  position: absolute;
  top: 18px;
  left: 22px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}

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

.step {
  border-left: 4px solid var(--brand);
  border-radius: var(--radius);
  padding: 20px;
  background: #fff;
  box-shadow: 0 12px 26px rgba(15, 36, 63, 0.06);
}

.step b {
  display: block;
  margin-bottom: 10px;
  color: var(--brand-deep);
  font-size: 18px;
}

.step p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.intent-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(17, 140, 207, 0.22);
  border-radius: 999px;
  color: #17429a;
  background: #f1f8fc;
  font-size: 14px;
  font-weight: 800;
}

.faq {
  display: grid;
  gap: 12px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: #fff;
}

.faq summary {
  color: #102843;
  cursor: default;
  font-weight: 900;
}

.faq p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.cta-band {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto 68px;
  border-radius: var(--radius);
  padding: 36px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(22, 183, 163, 0.92), rgba(23, 66, 154, 0.98));
}

.cta-band h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 38px);
}

.cta-band p {
  max-width: 780px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.75;
}

.cta-band .btn {
  background: #fff;
  color: var(--brand-deep);
}

.contact {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 72px;
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 28px;
  border-radius: 12px;
  padding: 38px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(9, 87, 155, 0.96), rgba(17, 140, 207, 0.94)),
    #09579b;
  box-shadow: var(--shadow);
}

.contact-box .label {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.70);
  font-size: 13px;
  font-weight: 900;
}

.contact-box h2 {
  max-width: 700px;
  margin-bottom: 16px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.22;
}

.contact-box p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
}

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

.contact-actions .btn:first-child {
  color: #09579b;
  background: #fff;
}

.contact-actions .btn:last-child {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.50);
}

.contact-grid {
  display: grid;
  gap: 12px;
  align-content: start;
}

.contact-item {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.10);
}

.contact-item span {
  display: block;
  margin-bottom: 5px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.contact-item b {
  font-size: 17px;
  line-height: 1.5;
}

.preview-note {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 26px;
  color: #718094;
  font-size: 13px;
  text-align: center;
}

.preview-note a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
  background: #fff;
  font-size: 14px;
}

.footer-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

@media (max-width: 960px) {
  .nav {
    height: auto;
    padding: 16px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 16px;
    overflow-x: auto;
  }

  .nav-link,
  .dropdown-trigger {
    height: 44px;
  }

  .dropdown-menu {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 48px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .steps,
  .metrics {
    grid-template-columns: 1fr;
  }

  .contact-box {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .nav,
  .hero-inner,
  .section,
  .section.alt > .section-inner,
  .cta-band,
  .contact,
  .preview-note,
  .footer-inner {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 28px;
  }

  .hero-title-compact {
    font-size: 27px;
  }

  .lead {
    font-size: 16px;
  }

  .section {
    padding: 48px 0;
  }

  .cta-band {
    padding: 26px;
  }

  .contact-box {
    padding: 26px;
  }
}