:root {
  --el-color-primary: #409eff;
  --text: #1f2d3d;
  --muted: #667085;
  --line: #e4e7ed;
  --page: #f5f7fa;
  --success: #67c23a;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--page);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
.container { width: min(calc(100% - 80px), var(--max)); margin: 0 auto; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  height: 72px;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.nav-wrap { display: flex; height: 72px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 176px; }
.brand-mark { display: grid; width: 44px; height: 38px; place-items: center; border-radius: 8px; color: #fff; background: var(--el-color-primary); font-size: 12px; font-weight: 800; }
.brand-copy { display: grid; line-height: 1.08; }
.brand-copy strong { font-size: 17px; font-weight: 700; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 10px; text-transform: uppercase; }
.desktop-menu { display: flex; flex: 1; align-items: center; justify-content: flex-end; gap: 28px; }
.desktop-menu a { color: var(--text); font-size: 14px; font-weight: 600; transition: color .18s ease; }
.desktop-menu a:hover { color: var(--el-color-primary); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.lang-button { font-weight: 700; }
.mobile-menu-button { display: none; width: 40px; padding: 0; font-size: 20px; }
.mobile-menu { display: none; padding: 8px 24px 16px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.98); }
.mobile-menu a { display: block; padding: 10px 0; color: var(--text); font-size: 14px; }
.mobile-menu.is-open { display: block; }

.hero-section { background: linear-gradient(135deg, rgba(64,158,255,.1), rgba(255,255,255,0) 45%), #fff; border-bottom: 1px solid var(--line); }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(340px, .72fr); gap: 56px; align-items: center; min-height: 620px; padding: 92px 0; }
.hero-copy, .hero-card { min-width: 0; }
.hero-copy h1 { max-width: 780px; margin: 22px 0; color: #17233d; font-size: 52px; font-weight: 780; line-height: 1.18; overflow-wrap: anywhere; }
.hero-lede { max-width: 720px; margin: 0 0 30px; color: var(--muted); font-size: 17px; overflow-wrap: anywhere; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-card { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.94); box-shadow: 0 18px 46px rgba(31,45,61,.08); }
.company-card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 13px; font-weight: 700; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(103,194,58,.12); }
.summary-list { display: grid; gap: 12px; margin: 0; }
.summary-list div { padding: 14px 16px; border: 1px solid #eef1f5; border-radius: 8px; background: #fbfcfe; }
.summary-list dt { margin: 0 0 4px; color: var(--muted); font-size: 12px; }
.summary-list dd { margin: 0; color: var(--text); font-size: 15px; font-weight: 700; }

.trust-strip { padding: 28px 0; background: #fff; border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.trust-item { min-height: 54px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; color: var(--text); background: #fff; font-size: 14px; font-weight: 650; text-align: center; }

.section { padding: 88px 0; }
.section-heading { max-width: 760px; margin-bottom: 38px; }
.section-heading h2, .process-copy h2, .contact-copy h2 { margin: 16px 0 12px; color: #17233d; font-size: 38px; font-weight: 760; line-height: 1.22; }
.section-heading p, .process-copy p, .contact-copy p { margin: 0; color: var(--muted); font-size: 16px; }
.product-section { background: #fff; }
.product-layout { display: grid; gap: 26px; }
.product-heading { margin-bottom: 0; }
.product-card { border-radius: 8px; }
.product-card-body { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 36px; align-items: center; padding: 32px; }
.product-main { min-width: 0; }
.product-main h3 { margin: 18px 0 12px; color: #17233d; font-size: 28px; line-height: 1.25; }
.product-main p { max-width: 760px; margin: 0 0 22px; color: var(--muted); font-size: 15px; }
.product-side { display: grid; gap: 16px; justify-items: stretch; padding: 24px; border: 1px solid #eef1f5; border-radius: 8px; background: #fbfcfe; }
.product-url { color: var(--el-color-primary); font-size: 15px; font-weight: 800; text-align: center; }
.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.service-card { position: relative; width: 100%; border-radius: 8px; }
.service-card .el-card__body { display: flex; min-height: 292px; flex-direction: column; padding: 28px 24px; }
.service-index { color: #a8abb2; font-size: 12px; font-weight: 800; }
.service-card h3 { margin: 24px 0 12px; color: #17233d; font-size: 20px; line-height: 1.25; }
.service-card p { flex: 1; margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.tag-list, .deliverable-list { display: flex; flex-wrap: wrap; gap: 8px; }

.process-section { color: #fff; background: #17233d; }
.process-layout { display: grid; grid-template-columns: .86fr 1.14fr; gap: 72px; align-items: start; }
.process-copy, .process-list, .contact-copy, .contact-panel { min-width: 0; }
.process-copy h2 { color: #fff; }
.process-copy p { max-width: 430px; color: #c9d3df; }
.process-list { display: grid; gap: 14px; }
.process-item { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 22px 24px; border: 1px solid rgba(255,255,255,.14); border-radius: 8px; background: rgba(255,255,255,.05); }
.process-item b { color: #8cc5ff; font-size: 14px; }
.process-item h3 { margin: 0 0 6px; color: #fff; font-size: 19px; }
.process-item p { margin: 0; color: #c9d3df; }

.about-section { background: #fff; }
.about-layout { display: grid; gap: 26px; }
.about-heading { margin-bottom: 0; }
.about-panel { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: #fbfcfe; }
.fact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 20px; }
.fact-grid div { padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.fact-grid strong { display: block; color: var(--el-color-primary); font-size: 30px; line-height: 1.1; }
.fact-grid span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }

.contact-section { background: linear-gradient(135deg, #ecf5ff, #f5f7fa 58%, #f0f9eb); }
.contact-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 64px; align-items: center; }
.contact-copy p { max-width: 420px; }
.contact-panel { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: 0 18px 46px rgba(31,45,61,.08); }
.description-list { margin: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.description-list div { display: grid; grid-template-columns: 150px 1fr; min-height: 58px; border-bottom: 1px solid var(--line); }
.description-list div:last-child { border-bottom: 0; }
.description-list dt, .description-list dd { display: flex; align-items: center; margin: 0; padding: 14px 18px; }
.description-list dt { color: var(--muted); background: #f5f7fa; font-size: 13px; }
.description-list dd { color: var(--text); font-weight: 700; }
.email-list { flex-wrap: wrap; gap: 8px 18px; }
.email-list a { color: var(--el-color-primary); word-break: break-all; }
.contact-button { width: 100%; margin-top: 18px; }

.site-footer { height: auto; padding: 0; color: #c9d3df; background: #111827; }
.footer-wrap { display: flex; justify-content: space-between; gap: 24px; padding: 26px 0; font-size: 13px; }
.footer-wrap > div:first-child { display: grid; gap: 4px; }
.footer-wrap strong { color: #fff; }
.footer-meta { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.footer-meta a { color: #8cc5ff; }

@media (max-width: 980px) {
  .container { width: min(calc(100% - 48px), var(--max)); }
  .desktop-menu { display: none; }
  .mobile-menu-button { display: inline-flex; }
  .hero-layout { grid-template-columns: 1fr; min-height: auto; padding: 72px 0; }
  .hero-copy h1 { font-size: 42px; }
  .hero-card { max-width: 560px; }
  .trust-grid, .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-card-body { grid-template-columns: 1fr; }
  .product-side { max-width: 360px; }
  .process-layout, .contact-layout { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 640px) {
  .container { width: min(calc(100% - 56px), var(--max)); }
  .site-header, .nav-wrap { height: 64px; }
  .brand { min-width: 0; }
  .brand-copy small { display: none; }
  .hero-layout { padding: 48px 0; gap: 30px; }
  .hero-copy h1 { max-width: 100%; font-size: 25px; line-height: 1.3; }
  .hero-lede { max-width: 100%; font-size: 14px; line-height: 1.75; word-break: break-all; }
  .hero-actions .el-button { width: 100%; margin-left: 0; }
  .section { padding: 62px 0; }
  .section-heading h2, .process-copy h2, .contact-copy h2 { font-size: 28px; }
  .product-card-body { padding: 18px; gap: 22px; }
  .product-main h3 { font-size: 23px; }
  .product-side { max-width: none; padding: 18px; }
  .trust-grid, .service-grid, .fact-grid { grid-template-columns: 1fr; }
  .service-card .el-card__body { min-height: auto; }
  .about-panel, .contact-panel, .hero-card { padding: 18px; }
  .process-item { grid-template-columns: 1fr; gap: 8px; }
  .description-list div { grid-template-columns: 1fr; }
  .description-list dt { padding-bottom: 4px; }
  .description-list dd { padding-top: 4px; }
  .footer-wrap { display: grid; gap: 12px; }
}