* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #0f172a;
  background: #ffffff;
}

a {
  color: inherit;
}

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

.container {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e7eb;
}

.header-wrap {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  min-width: 0;
}

.logo-mark {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 800;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.logo-text strong {
  font-size: 19px;
  line-height: 1.3;
  color: #111827;
}

.logo-text span {
  margin-top: 6px;
  font-size: 14px;
  color: #6b7280;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-menu a {
  text-decoration: none;
  color: #334155;
  font-size: 16px;
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #2563eb;
}

.nav-btn {
  background: #2563eb;
  color: #ffffff !important;
  padding: 14px 22px;
  border-radius: 16px;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

.nav-btn:hover {
  background: #1d4ed8;
  color: #ffffff !important;
}

.nav-toggle {
  display: none;
  border: none;
  background: #eff6ff;
  color: #2563eb;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.hero-section {
  padding: 88px 0 72px;
  background: linear-gradient(180deg, #eef4ff 0%, #f8fbff 45%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 42px;
  align-items: center;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  color: #2563eb;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 26px;
}

.hero-title {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 760px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #0f172a;
}

.hero-title span {
  display: block;
  font-size: 56px;
  line-height: 1.12;
}@media (max-width: 1200px) {
  .hero-title span {
    font-size: 50px;
  }
}

@media (max-width: 992px) {
  .hero-title span {
    font-size: 42px;
    line-height: 1.16;
  }
}

@media (max-width: 768px) {
  .hero-title span {
    font-size: 32px;
    line-height: 1.22;
  }
}

.hero-title-accent {
  color: #111827;
}

.hero-desc {
  margin: 28px 0 0;
  max-width: 720px;
  font-size: 18px;
  line-height: 1.9;
  color: #475569;
}

.page-title {
  margin: 16px 0 14px;
  font-size: 48px;
  line-height: 1.22;
  color: #0f172a;
}

.page-desc {
  margin: 0;
  max-width: 900px;
  font-size: 18px;
  line-height: 1.9;
  color: #475569;
}

.hero-points {
  margin-top: 26px;
  padding: 22px 24px;
  border: 1px solid #dbeafe;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.06);
}

.hero-point + .hero-point {
  margin-top: 14px;
}

.hero-point strong {
  color: #2563eb;
  font-size: 16px;
}

.hero-point span {
  color: #334155;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 28px;
  border-radius: 16px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 700;
  transition: all 0.25s ease;
}

.btn-primary {
  background: #2563eb;
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.24);
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #dbe3f0;
}

.btn-secondary:hover {
  border-color: #2563eb;
  color: #2563eb;
}

.hero-panel {
  background: #0f172a;
  color: #ffffff;
  border-radius: 32px;
  padding: 28px;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.18);
}

.panel-dots {
  display: flex;
  gap: 10px;
  margin-bottom: 26px;
}

.panel-dots span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #dbeafe;
  opacity: 0.9;
}

.panel-dots span:first-child {
  background: #3b82f6;
}

.panel-dots span:nth-child(2) {
  background: #60a5fa;
}

.hero-panel h3 {
  margin: 0 0 22px;
  font-size: 28px;
  line-height: 1.3;
  color: #ffffff;
}

.panel-card {
  padding: 24px 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.panel-card + .panel-card {
  margin-top: 16px;
}

.panel-card h4 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
  color: #ffffff;
}

.panel-card p {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: #f8fafc;
}

.section-head {
  max-width: 920px;
  margin-bottom: 34px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: #eff6ff;
  color: #2563eb;
  font-size: 14px;
  font-weight: 700;
}

.white-tag {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
}

.section-head h1,
.section-head h2 {
  margin: 16px 0 12px;
  color: #0f172a;
}

.section-head h2 {
  font-size: 40px;
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  font-size: 17px;
  line-height: 1.9;
  color: #64748b;
}

.service-grid,
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card,
.info-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 24px;
  padding: 28px 24px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.04);
}

.service-card h3,
.info-card h3 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.35;
  color: #0f172a;
}

.service-card p,
.info-card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: #475569;
}

.faq-list {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 22px;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 28px;
  font-size: 26px;
  line-height: 1.5;
  font-weight: 700;
  color: #0f172a;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 28px;
  top: 22px;
  font-size: 30px;
  line-height: 1;
  color: #2563eb;
  font-weight: 400;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 0;
  padding: 0 28px 24px;
  font-size: 18px;
  line-height: 1.9;
  color: #334155;
}

.cta-section {
  padding: 84px 0;
  background: linear-gradient(135deg, #1d4ed8 0%, #0f172a 100%);
}

.cta-box {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
  border-radius: 32px;
  padding: 36px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.cta-content h2 {
  margin: 16px 0 14px;
  font-size: 38px;
  line-height: 1.3;
  color: #ffffff;
}

.cta-content p {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.84);
}

.cta-contact {
  padding: 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.09);
}

.cta-contact p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: #ffffff;
}

.cta-contact p:last-child {
  margin-bottom: 0;
}

.site-footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.82);
  padding-top: 56px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 36px;
}

.footer-col h3,
.footer-col h4 {
  color: #ffffff;
  margin-top: 0;
  margin-bottom: 18px;
}

.footer-col p,
.footer-col li,
.footer-col a {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.9;
  text-decoration: none;
}

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

.footer-bottom {
  margin-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 18px 0 24px;
  flex-wrap: wrap;
}

.footer-bottom a {
  color: #93c5fd;
  text-decoration: none;
}

@media (max-width: 1200px) {
  .hero-title span {
    font-size: 54px;
  }

  .page-title {
    font-size: 42px;
  }
}

@media (max-width: 992px) {
  .hero-grid,
  .cta-box,
  .footer-grid,
  .service-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-title span {
    font-size: 46px;
  }

  .page-title {
    font-size: 38px;
  }

  .nav-menu {
    gap: 22px;
  }
}

@media (max-width: 768px) {
  .container {
    width: min(100% - 28px, 1200px);
  }

  .header-wrap {
    min-height: 78px;
    flex-wrap: wrap;
  }

  .logo {
    flex: 1;
  }

  .logo-mark {
    width: 48px;
    height: 48px;
    font-size: 24px;
    border-radius: 14px;
  }

  .logo-text strong {
    font-size: 17px;
  }

  .logo-text span {
    font-size: 12px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 8px 0 18px;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-btn {
    padding: 12px 16px;
  }

  .hero-section {
    padding: 60px 0 44px;
  }

  .hero-badge {
    font-size: 14px;
    padding: 10px 14px;
    margin-bottom: 20px;
  }

  .hero-title span {
    font-size: 34px;
    line-height: 1.18;
  }

  .page-title {
    font-size: 30px;
    line-height: 1.35;
  }

  .hero-desc,
  .page-desc {
    font-size: 15px;
    line-height: 1.85;
    margin-top: 20px;
  }

  .hero-points {
    margin-top: 22px;
    padding: 18px;
    border-radius: 18px;
  }

  .hero-actions {
    margin-top: 24px;
    gap: 12px;
  }

  .btn {
    width: 100%;
    min-height: 50px;
    font-size: 16px;
  }

  .hero-panel {
    padding: 22px 18px;
    border-radius: 24px;
  }

  .hero-panel h3 {
    font-size: 24px;
  }

  .panel-card h4 {
    font-size: 18px;
  }

  .panel-card p {
    font-size: 14px;
    line-height: 1.75;
  }

  .section {
    padding: 58px 0;
  }

  .section-head h2 {
    font-size: 28px;
    line-height: 1.35;
  }

  .section-head p,
  .service-card p,
  .info-card p,
  .cta-content p,
  .cta-contact p,
  .faq-item p {
    font-size: 15px;
    line-height: 1.8;
  }

  .service-card,
  .info-card {
    padding: 22px 18px;
    border-radius: 20px;
  }

  .service-card h3,
  .info-card h3 {
    font-size: 20px;
  }

  .faq-item summary {
    padding: 18px 20px;
    padding-right: 52px;
    font-size: 19px;
  }

  .faq-item summary::after {
    right: 20px;
    top: 16px;
    font-size: 26px;
  }

  .faq-item p {
    padding: 0 20px 20px;
  }

  .cta-section {
    padding: 60px 0;
  }

  .cta-box {
    padding: 22px 18px;
    border-radius: 24px;
  }

  .cta-content h2 {
    font-size: 28px;
  }

  .cta-contact {
    padding: 18px;
    border-radius: 18px;
  }

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