:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-blue: #eef6ff;
  --ink: #172033;
  --muted: #617089;
  --line: #d8e4f2;
  --blue: #1268d8;
  --blue-deep: #06438f;
  --cyan: #1fa9d8;
  --gold: #c48a2c;
  --radius: 8px;
  --shadow: 0 18px 60px rgba(12, 50, 92, 0.14);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

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

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 50;
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(216, 228, 242, 0.86);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(var(--max), calc(100% - 40px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(18, 104, 216, 0.25);
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #334057;
  font-size: 15px;
}

.nav-links a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--blue);
  border-bottom-color: var(--blue);
  outline: none;
}

.hero {
  position: relative;
  min-height: 680px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: #0b3265;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.78;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(5, 25, 57, 0.94) 0%, rgba(5, 33, 74, 0.82) 45%, rgba(9, 63, 121, 0.48) 100%),
    linear-gradient(0deg, rgba(8, 28, 58, 0.3), rgba(8, 28, 58, 0));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0 54px;
  color: #fff;
}

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

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(36px, 4.6vw, 58px);
  line-height: 1.08;
  font-weight: 800;
}

.hero-copy {
  max-width: 620px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 19px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  min-width: 128px;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(135deg, #1c7ce8, #14a9d5);
  color: #fff;
  box-shadow: 0 14px 34px rgba(17, 117, 219, 0.32);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.45);
  color: #fff;
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
  outline: 3px solid rgba(31, 169, 216, 0.32);
  outline-offset: 3px;
}

.trust-strip {
  width: min(760px, 100%);
  margin: 76px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.11);
  backdrop-filter: blur(16px);
}

.trust-strip div {
  padding: 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip dt {
  font-size: 22px;
  font-weight: 800;
}

.trust-strip dd {
  margin: 3px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.section {
  padding: 92px 0;
}

.section-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.two-column {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.section h2 {
  margin: 0;
  color: #12213a;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
}

.intro p:last-child,
.about p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 38px;
}

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

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

.service-card,
.faq-grid article,
.advantage-list article,
.address-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.service-card {
  min-height: 232px;
  padding: 28px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.service-card:hover {
  transform: translateY(-3px);
  border-color: rgba(18, 104, 216, 0.34);
  box-shadow: var(--shadow);
}

.service-card.featured {
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
  color: #fff;
}

.service-card.featured p {
  color: rgba(255, 255, 255, 0.82);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 32px;
  margin-bottom: 26px;
  border-radius: 999px;
  background: var(--surface-blue);
  color: var(--blue);
  font-weight: 800;
}

.featured .card-icon {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.service-card h3,
.advantage-panel h3,
.advantage-list h3,
.process-list h3,
.faq-grid h3,
.address-box h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.3;
}

.service-card p,
.advantage-panel p,
.advantage-list p,
.process-list p,
.faq-grid p {
  margin: 12px 0 0;
  color: var(--muted);
}

.advantages {
  background: linear-gradient(180deg, #f5f8fc, #eef5fd);
}

.advantage-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
}

.advantage-panel {
  min-height: 420px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(145deg, #0a3f84, #1374df 58%, #14a9d5);
  color: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.advantage-panel p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.advantage-list article {
  padding: 28px;
}

.process {
  background: #fff;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  position: relative;
  min-height: 226px;
  padding: 28px;
  border-top: 4px solid var(--blue);
  background: #f8fbff;
  border-radius: var(--radius);
}

.process-list span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue);
  font-weight: 800;
}

.about {
  background: linear-gradient(180deg, #eef5fd, #f7faff);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
}

.address-box {
  padding: 34px;
  box-shadow: var(--shadow);
}

.address-box dl {
  display: grid;
  gap: 18px;
  margin: 24px 0 0;
}

.address-box div {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.address-box div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.address-box dt {
  color: var(--muted);
  font-size: 14px;
}

.address-box dd {
  margin: 4px 0 0;
  font-weight: 700;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.faq-grid article {
  padding: 28px;
}

.site-footer {
  background: #0c2548;
  color: rgba(255, 255, 255, 0.78);
  padding: 34px 0;
}

.footer-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-inner strong {
  display: block;
  color: #fff;
  font-size: 18px;
}

.footer-inner p {
  margin: 4px 0 0;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  text-align: right;
}

.footer-meta a:hover,
.footer-meta a:focus {
  color: #fff;
  outline: none;
  text-decoration: underline;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 900px) {
  .nav {
    min-height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 640px;
  }

  .trust-strip,
  .two-column,
  .service-grid,
  .advantage-layout,
  .process-list,
  .about-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .trust-strip div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 68px 0;
  }

  .service-card,
  .process-list li {
    min-height: auto;
  }

  .advantage-panel {
    min-height: 320px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    align-items: flex-start;
    text-align: left;
  }
}

@media (max-width: 560px) {
  .nav,
  .hero-content,
  .section-inner,
  .footer-inner {
    width: min(100% - 28px, var(--max));
  }

  .hero {
    min-height: 700px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .button {
    width: 100%;
  }

  .trust-strip {
    margin-top: 44px;
  }
}

@media (max-width: 380px) {
  .brand strong {
    font-size: 16px;
  }

  .brand small {
    font-size: 11px;
  }

  .hero h1 {
    font-size: 30px;
  }

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

  .trust-strip dt {
    font-size: 20px;
  }

  .service-card,
  .advantage-list article,
  .process-list li,
  .faq-grid article,
  .address-box {
    padding: 24px;
  }
}