:root {
  --color-primary-blue: #0099cc;
  --color-primary-blue-dark: #006699;
  --color-primary-blue-soft: rgba(0, 153, 204, 0.1);
  --color-accent-yellow: #ffd700;
  --color-accent-gold: #ffa500;
  --color-white: #ffffff;
  --color-gray-50: #f9f9f9;
  --color-gray-100: #f0f0f0;
  --color-gray-300: #e0e0e0;
  --color-gray-700: #666666;
  --color-gray-900: #333333;
  --gradient-blue: linear-gradient(135deg, #0099cc 0%, #006699 100%);
  --gradient-gold: linear-gradient(135deg, #ffd700 0%, #ffc107 100%);
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 15px rgba(0, 0, 0, 0.12);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--color-gray-900);
  background: var(--color-white);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-gray-900);
  background: var(--color-white);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-gray-300);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--color-primary-blue-dark);
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--color-white);
  background: var(--gradient-blue);
  border-radius: 8px;
  box-shadow: var(--shadow-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--color-gray-700);
  font-size: 15px;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--color-primary-blue-dark);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: 42px;
  min-height: calc(100vh - 72px);
  padding: 70px max(24px, calc((100vw - 1180px) / 2)) 88px;
  color: var(--color-white);
  background: var(--gradient-blue);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-accent-yellow);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 1.02;
}

.hero-lede {
  max-width: 650px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 20px;
  line-height: 1.8;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--color-gray-900);
  background: var(--gradient-gold);
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.hero-media {
  position: relative;
  min-height: 520px;
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.section {
  padding: 86px max(24px, calc((100vw - 1180px) / 2));
}

.section:nth-of-type(odd) {
  background: var(--color-gray-50);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading h2,
.cta-band h2 {
  margin: 0;
  color: var(--color-gray-900);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.intro-grid p,
.service-card p,
.agent-card p,
.contact-panel p,
.qr-panel p {
  margin: 0;
  color: var(--color-gray-700);
  font-size: 16px;
  line-height: 1.8;
}

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

.service-card,
.agent-card,
.contact-panel,
.qr-panel {
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  box-shadow: var(--shadow-light);
}

.service-card {
  padding: 26px;
}

.card-icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 18px;
  color: var(--color-primary-blue-dark);
  font-weight: 800;
  background: var(--color-primary-blue-soft);
  border-radius: 8px;
}

.service-card h3,
.agent-card h3,
.contact-panel h3 {
  margin: 0 0 12px;
  color: var(--color-primary-blue-dark);
  font-size: 21px;
  line-height: 1.35;
}

.assessment-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.assessment-list a {
  display: flex;
  align-items: center;
  min-height: 58px;
  padding: 14px 18px;
  color: var(--color-primary-blue-dark);
  font-weight: 800;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-left: 5px solid var(--color-accent-yellow);
  border-radius: 8px;
  box-shadow: var(--shadow-light);
}

.assessment-list a:hover,
.agent-card:hover {
  border-color: var(--color-primary-blue);
  box-shadow: var(--shadow-medium);
}

.agent-card {
  display: block;
  padding: 24px;
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 58px max(24px, calc((100vw - 1180px) / 2));
  background: var(--gradient-blue);
}

.cta-band h2 {
  max-width: 780px;
  color: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 22px;
}

.contact-panel,
.qr-panel {
  padding: 28px;
}

.contact-panel ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  color: var(--color-gray-700);
}

.qr-panel {
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.wechat-qr {
  width: min(240px, 100%);
  aspect-ratio: 1;
  margin-bottom: 18px;
  object-fit: cover;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 8px;
  box-shadow: var(--shadow-light);
}

.footer {
  padding: 26px 24px;
  color: var(--color-white);
  text-align: center;
  background: var(--color-primary-blue-dark);
}

.footer p {
  margin: 0;
}

.not-found {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
  color: var(--color-white);
  text-align: center;
  background: var(--gradient-blue);
}

.not-found h1 {
  margin: 0 0 16px;
  font-size: clamp(42px, 7vw, 74px);
}

.not-found p:not(.eyebrow) {
  max-width: 620px;
  margin: 0 auto 28px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  line-height: 1.8;
}

@media (max-width: 940px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    right: 16px;
    top: 72px;
    display: none;
    width: min(320px, calc(100vw - 32px));
    padding: 14px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 8px;
    box-shadow: var(--shadow-medium);
  }

  .nav-links.is-open {
    display: grid;
    gap: 4px;
  }

  .nav-links a {
    padding: 12px;
    border-radius: 8px;
  }

  .nav-links a:hover {
    background: var(--color-primary-blue-soft);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 56px;
  }

  .hero-media,
  .hero-media img {
    min-height: 340px;
  }

  .intro-grid,
  .service-grid,
  .assessment-list,
  .agent-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cta-band {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .nav {
    width: min(100% - 24px, 1180px);
  }

  .hero,
  .section,
  .cta-band {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero h1 {
    font-size: 48px;
  }

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

  .hero-actions,
  .btn {
    width: 100%;
  }
}