:root {
  --warm-50: #fef7ee;
  --warm-100: #fdedd5;
  --warm-500: #ec7839;
  --warm-600: #e55f23;
  --warm-700: #c94a1a;
  --primary-50: #fff7ed;
  --primary-600: #ea580c;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;
  --white: #ffffff;
  --blue: #3b82f6;
  --green: #22c55e;
  --purple: #a855f7;
  --shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--gray-900);
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3, h4, p { margin: 0; }

.container {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  box-shadow: var(--shadow);
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

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

.brand-logo {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex: 0 0 48px;
  color: var(--white);
  font-size: 22px;
  font-weight: 800;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--warm-500), var(--primary-600));
}

.brand strong {
  display: block;
  font-size: 24px;
  line-height: 1.2;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--gray-500);
  font-size: 12px;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  color: var(--gray-700);
  font-size: 14px;
  font-weight: 500;
}

.desktop-nav a:hover, .header-phone:hover, .text-link:hover {
  color: var(--warm-600);
}

.header-phone {
  color: var(--gray-700);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.hero {
  position: relative;
  height: 600px;
  overflow: hidden;
  background: linear-gradient(90deg, var(--warm-50), var(--primary-50));
}

.hero-bg, .hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-bg {
  background-position: center;
  background-size: cover;
  opacity: .2;
}

.hero-shade {
  background: linear-gradient(90deg, rgba(254,247,238,.92), rgba(255,247,237,.72), rgba(255,255,255,.1));
}

.hero-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 1280px;
}

.tag {
  margin-bottom: 12px;
  color: var(--warm-600);
  font-size: 14px;
  font-weight: 700;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: 48px;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: 0;
}

.lead {
  margin-bottom: 32px;
  color: var(--gray-600);
  font-size: 20px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-start;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 32px;
  border-radius: 8px;
  border: 2px solid transparent;
  font-weight: 700;
  transition: .2s ease;
}

.btn-primary {
  color: var(--white);
  background: var(--warm-600);
  box-shadow: var(--shadow);
}

.btn-primary:hover { background: var(--warm-700); transform: translateY(-1px); }
.btn-light { color: var(--warm-600); background: var(--white); border-color: var(--warm-500); }
.btn-light:hover { background: var(--warm-50); }
.btn-white { color: var(--warm-600); background: var(--white); }
.btn-outline { color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: rgba(255,255,255,.1); }

.metrics {
  padding: 48px 0;
  background: var(--white);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.metrics b {
  display: block;
  margin-bottom: 8px;
  color: var(--warm-600);
  font-size: 40px;
  line-height: 1;
}

.metrics span { color: var(--gray-600); }

.section { padding: 80px 0; }
.white { background: var(--white); }
.gray { background: var(--gray-50); }

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
}

h2 {
  margin-bottom: 20px;
  font-size: 36px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0;
}

.muted {
  color: var(--gray-600);
  line-height: 1.75;
}

.text-link {
  display: inline-flex;
  margin-top: 24px;
  color: var(--warm-600);
  font-weight: 700;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.process-grid div {
  padding: 20px;
  border-radius: 8px;
  background: var(--gray-50);
}

.process-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--warm-600);
}

.process-grid p { color: var(--gray-600); font-size: 14px; line-height: 1.6; }

.center-head {
  margin-bottom: 48px;
  text-align: center;
}

.center-head p {
  max-width: 672px;
  margin: 0 auto;
  color: var(--gray-600);
  font-size: 20px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.card, .news-card, .faq article {
  padding: 32px;
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.card {
  min-height: 290px;
  transition: .2s ease;
}

.card:hover, .case-card:hover, .news-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  color: var(--white);
  border-radius: 12px;
  font-weight: 800;
  font-size: 22px;
}

.orange { background: linear-gradient(135deg, #fb923c, var(--warm-500)); }
.blue { background: linear-gradient(135deg, #38bdf8, var(--blue)); }
.green { background: linear-gradient(135deg, #4ade80, #14b8a6); }
.purple { background: linear-gradient(135deg, #c084fc, #ec4899); }

h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.35;
  font-weight: 800;
}

.card p, .news-card p, .faq p, .case-card p {
  color: var(--gray-600);
  line-height: 1.65;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  align-items: center;
}

.lead-small {
  margin-bottom: 28px;
  color: var(--gray-600);
  font-size: 20px;
  line-height: 1.75;
}

.about-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.about-points span {
  padding: 16px;
  color: var(--gray-700);
  border-radius: 8px;
  background: var(--gray-50);
  font-weight: 700;
}

.about-img {
  width: 100%;
  height: 400px;
  background-position: center;
  background-size: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
}

.case-grid, .news-grid, .faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.case-card {
  overflow: hidden;
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow);
  transition: .2s ease;
}

.case-img {
  width: 100%;
  height: 320px;
  background-position: center;
  background-size: cover;
  transition: .3s ease;
}

.case-card:hover .case-img { transform: scale(1.04); }
.case-card div { padding: 24px; }

.news-card {
  min-height: 220px;
  transition: .2s ease;
}

.cta {
  padding: 80px 0;
  color: var(--white);
  text-align: center;
  background: linear-gradient(90deg, var(--warm-500), var(--primary-600));
}

.cta h2 {
  color: var(--white);
  margin-bottom: 24px;
}

.cta p {
  max-width: 672px;
  margin: 0 auto 32px;
  color: rgba(255,255,255,.9);
  font-size: 20px;
}

.cta .hero-actions { justify-content: center; }

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

.site-footer {
  padding: 64px 0 28px;
  color: var(--white);
  background: var(--gray-900);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 40px;
}

.footer-brand h3 {
  margin: 0;
  font-size: 20px;
}

.footer-brand p, .footer-desc, .footer-grid p, .footer-grid a, .footer-bottom, .geo-text {
  color: var(--gray-400);
  font-size: 14px;
}

.footer-desc {
  max-width: 420px;
  margin-top: 20px;
  line-height: 1.75;
}

.footer-grid h4 {
  margin: 0 0 16px;
  font-size: 18px;
}

.footer-grid a {
  display: block;
  margin-bottom: 10px;
}

.footer-grid a:hover, .footer-bottom a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid #1f2937;
}

.geo-text {
  margin-top: 12px;
  line-height: 1.6;
}

.float-cta {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
}

.float-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  color: var(--white);
  background: var(--warm-600);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  box-shadow: var(--shadow-xl);
}

@media (max-width: 1024px) {
  .desktop-nav { display: none; }
  .service-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 24px, 1280px); }
  .nav-wrap { min-height: 70px; gap: 12px; }
  .brand-logo { width: 42px; height: 42px; flex-basis: 42px; }
  .brand strong { font-size: 17px; }
  .brand small { display: none; }
  .header-phone { font-size: 13px; }
  .hero { height: 660px; }
  .hero-shade { background: linear-gradient(180deg, rgba(254,247,238,.96), rgba(255,247,237,.82), rgba(255,255,255,.28)); }
  h1 { font-size: 38px; }
  h2 { font-size: 30px; }
  .lead { font-size: 17px; }
  .btn { width: 100%; min-height: 52px; padding: 0 18px; }
  .metrics-grid, .two-col, .process-grid, .service-grid, .about-grid, .case-grid, .news-grid, .faq-grid { grid-template-columns: 1fr; }
  .metrics b { font-size: 34px; }
  .section { padding: 64px 0; }
  .card { min-height: auto; }
  .about-img, .case-img { height: 260px; }
  .about-points { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}