:root {
  --yqt-blue: #075ca8;
  --yqt-blue-dark: #073b74;
  --yqt-line: #d8e4ef;
  --yqt-text: #243447;
  --yqt-muted: #6b7d90;
  --yqt-bg: #f4f8fc;
  --yqt-orange: #e56b1f;
}

.yqt-body {
  margin: 0;
  color: var(--yqt-text);
  background: #fff;
  font-family: Arial, "Microsoft YaHei", sans-serif;
}

.yqt-body a { color: inherit; text-decoration: none; }
.yqt-container { max-width: 1180px; margin: 0 auto; padding: 0 18px; }

.yqt-topbar {
  background: #eef5fb;
  border-bottom: 1px solid var(--yqt-line);
  font-size: 13px;
  color: #486174;
}
.yqt-topbar__inner {
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.yqt-topbar__right { display: inline-flex; gap: 18px; }
.yqt-topbar a:hover { color: var(--yqt-blue); }

.yqt-header {
  background: #fff;
  border-bottom: 3px solid var(--yqt-blue);
  position: sticky;
  top: 0;
  z-index: 30;
  box-shadow: 0 8px 24px rgba(7, 59, 116, .08);
}
.yqt-header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.yqt-logo img { display: block; max-width: 220px; max-height: 58px; object-fit: contain; }
.yqt-logo__fallback { color: var(--yqt-blue); font-size: 24px; font-weight: 700; }
.yqt-nav { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.yqt-nav__link {
  display: inline-flex;
  align-items: center;
  height: 76px;
  padding: 0 15px;
  color: #1d3550;
  font-size: 15px;
  font-weight: 600;
}
.yqt-nav__link:hover,
.yqt-nav__link.is-active {
  background: var(--yqt-blue);
  color: #fff;
}
.yqt-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 18px;
  background: var(--yqt-orange);
  color: #fff;
  font-weight: 700;
}
.yqt-menu { display: none; width: 40px; height: 38px; border: 1px solid var(--yqt-line); background: #fff; }
.yqt-menu span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--yqt-blue-dark); }
.yqt-address { display: none; padding-bottom: 10px; color: var(--yqt-muted); font-size: 13px; }

.yqt-hero {
  min-height: 520px;
  background:
    linear-gradient(90deg, rgba(4, 35, 71, .88), rgba(4, 54, 98, .72), rgba(4, 54, 98, .24)),
    var(--hero-img) center/cover no-repeat;
}
.yqt-hero__inner {
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: center;
  gap: 42px;
}
.yqt-eyebrow {
  display: inline-flex;
  margin-bottom: 14px;
  color: #cbe4ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.yqt-hero h1 {
  margin: 0;
  color: #fff;
  font-size: 48px;
  line-height: 1.18;
  max-width: 760px;
}
.yqt-hero p {
  margin: 22px 0 0;
  color: #edf6ff;
  font-size: 18px;
  line-height: 1.8;
  max-width: 720px;
}
.yqt-hero__actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.yqt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  height: 46px;
  padding: 0 22px;
  font-weight: 700;
}
.yqt-btn--primary { background: var(--yqt-orange); color: #fff; }
.yqt-btn--ghost { color: #fff; border: 1px solid rgba(255,255,255,.58); }
.yqt-hero__panel {
  background: rgba(255, 255, 255, .94);
  border-top: 4px solid var(--yqt-orange);
  padding: 26px;
  display: grid;
  gap: 14px;
  box-shadow: 0 18px 48px rgba(0,0,0,.22);
}
.yqt-hero__panel strong { color: var(--yqt-blue-dark); font-size: 22px; }
.yqt-hero__panel span { padding-left: 14px; border-left: 3px solid var(--yqt-blue); color: #385166; }

.yqt-section { padding: 64px 0; }
.yqt-section--cats,
.yqt-section--solution { background: var(--yqt-bg); }
.yqt-section__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--yqt-line);
  padding-bottom: 16px;
}
.yqt-section__head span { color: var(--yqt-blue); font-weight: 700; font-size: 13px; text-transform: uppercase; }
.yqt-section__head h2 { margin: 4px 0 0; color: #102c48; font-size: 28px; }
.yqt-section__head a { color: var(--yqt-blue); font-weight: 700; }
.yqt-section__head--compact { margin-bottom: 18px; }

.yqt-catgrid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.yqt-cat {
  background: #fff;
  border: 1px solid var(--yqt-line);
  padding: 22px;
  min-height: 132px;
  display: grid;
  align-content: space-between;
}
.yqt-cat:hover { border-color: var(--yqt-blue); box-shadow: 0 14px 30px rgba(7, 92, 168, .13); transform: translateY(-2px); }
.yqt-cat span { color: var(--yqt-orange); font-weight: 800; }
.yqt-cat strong { color: #163653; font-size: 17px; }
.yqt-cat em { color: var(--yqt-muted); font-style: normal; font-size: 13px; }

.yqt-products { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.yqt-product {
  border: 1px solid var(--yqt-line);
  background: #fff;
  transition: .18s ease;
}
.yqt-product:hover { border-color: var(--yqt-blue); box-shadow: 0 16px 32px rgba(7, 59, 116, .12); transform: translateY(-2px); }
.yqt-product__image {
  aspect-ratio: 4 / 3;
  background: #f6f9fc;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.yqt-product__image img { width: 100%; height: 100%; object-fit: contain; }
.yqt-product__body { padding: 16px; }
.yqt-product__body h3 { margin: 0; color: #123450; font-size: 16px; line-height: 1.45; }
.yqt-product__body p { margin: 10px 0 0; color: var(--yqt-muted); font-size: 13px; line-height: 1.7; }

.yqt-solution {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 48px;
  align-items: start;
}
.yqt-solution h2 { margin: 0; color: #102c48; font-size: 32px; }
.yqt-solution p { color: var(--yqt-muted); line-height: 1.9; font-size: 16px; }
.yqt-solution ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.yqt-solution li { background: #fff; border-left: 4px solid var(--yqt-blue); padding: 14px 18px; box-shadow: 0 8px 20px rgba(7, 59, 116, .08); }

.yqt-newswrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr); gap: 42px; }
.yqt-newslist { display: grid; gap: 12px; }
.yqt-newslist a {
  border-bottom: 1px solid var(--yqt-line);
  padding: 0 0 14px;
  display: grid;
  gap: 6px;
}
.yqt-newslist time { color: var(--yqt-muted); font-size: 13px; }
.yqt-newslist strong { color: #123450; font-size: 17px; }
.yqt-newslist p { margin: 0; color: var(--yqt-muted); font-size: 13px; line-height: 1.7; }
.yqt-cases { display: grid; gap: 12px; }
.yqt-cases a { background: var(--yqt-bg); border: 1px solid var(--yqt-line); padding: 18px; display: grid; gap: 8px; }
.yqt-cases strong { color: #123450; }
.yqt-cases span { color: var(--yqt-muted); font-size: 13px; }

.yqt-footer { background: #092f59; color: #d9e8f6; }
.yqt-footer__grid {
  padding: 52px 18px 38px;
  display: grid;
  grid-template-columns: 1.2fr .9fr .7fr 1fr;
  gap: 34px;
}
.yqt-footer h3,
.yqt-footer h4 { color: #fff; margin: 0 0 16px; }
.yqt-footer p { color: #b9cee2; line-height: 1.8; margin: 0 0 10px; }
.yqt-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.yqt-footer a:hover { color: #fff; }
.yqt-footer__quote {
  margin-top: 18px;
  display: inline-flex;
  background: var(--yqt-orange);
  color: #fff;
  padding: 11px 18px;
  font-weight: 700;
}
.yqt-friends {
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 18px;
  padding-bottom: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: #b9cee2;
  font-size: 13px;
}
.yqt-footer__bottom { background: #06213f; color: #a9c1d7; font-size: 13px; }
.yqt-footer__bottom .yqt-container {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

@media (max-width: 920px) {
  .yqt-topbar__inner { align-items: flex-start; flex-direction: column; padding-top: 8px; padding-bottom: 8px; }
  .yqt-header__inner { min-height: 68px; }
  .yqt-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--yqt-line);
    box-shadow: 0 12px 24px rgba(7, 59, 116, .12);
  }
  .yqt-nav.is-open { display: grid; }
  .yqt-nav__link { height: 46px; padding: 0 18px; border-top: 1px solid var(--yqt-line); }
  .yqt-menu { display: block; margin-left: auto; }
  .yqt-header__cta { display: none; }
  .yqt-address { display: block; }
  .yqt-hero__inner { grid-template-columns: 1fr; padding-top: 54px; padding-bottom: 54px; }
  .yqt-hero h1 { font-size: 34px; }
  .yqt-hero p { font-size: 16px; }
  .yqt-catgrid,
  .yqt-products,
  .yqt-newswrap,
  .yqt-footer__grid,
  .yqt-solution { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .yqt-container { padding: 0 14px; }
  .yqt-logo img { max-width: 170px; }
  .yqt-hero,
  .yqt-hero__inner { min-height: 480px; }
  .yqt-hero h1 { font-size: 29px; }
  .yqt-section { padding: 46px 0; }
  .yqt-section__head { align-items: flex-start; flex-direction: column; gap: 8px; }
  .yqt-products { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .yqt-product__body { padding: 12px; }
  .yqt-product__body h3 { font-size: 14px; }
  .yqt-footer__bottom .yqt-container { align-items: flex-start; flex-direction: column; padding-top: 12px; padding-bottom: 12px; }
}