/* =========================================================
   KXYQY V6.1 - Global Base
   Design basis: modern scientific-institute portal
   ========================================================= */
:root {
  --kxy-blue-900: #07366f;
  --kxy-blue-800: #08468d;
  --kxy-blue-700: #0a58a5;
  --kxy-blue-100: #edf5fc;
  --kxy-gold: #b88932;
  --kxy-text: #273240;
  --kxy-muted: #687586;
  --kxy-line: #dce4ed;
  --kxy-soft: #f5f8fb;
  --kxy-white: #ffffff;
  --kxy-container: 1180px;
  --kxy-content: 900px;
  --kxy-radius: 3px;
  --kxy-shadow: 0 8px 26px rgba(11, 56, 108, 0.09);
}

body {
  color: var(--kxy-text);
  background: #ffffff;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

.kxy-container {
  width: min(var(--kxy-container), calc(100% - 48px));
  margin: 0 auto;
}

.kxy-site-header {
  position: relative;
  z-index: 30;
  background: #ffffff;
}

.kxy-brand {
  border-bottom: 1px solid #edf1f5;
}

.kxy-brand__inner {
  min-height: 94px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  column-gap: 28px;
}

.kxy-logo {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.kxy-logo img {
  width: 340px;
  max-width: 100%;
  height: auto;
}

.kxy-brand__slogan {
  min-width: 0;
  padding-left: 26px;
  border-left: 1px solid #cfd8e3;
}

.kxy-brand__slogan strong {
  display: block;
  color: var(--kxy-blue-900);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.kxy-brand__slogan span {
  display: block;
  margin-top: 5px;
  color: #4f5b68;
  font-size: 13px;
}

.kxy-brand__tools {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  row-gap: 10px;
}

.kxy-contact-mini {
  display: flex;
  gap: 22px;
  color: #2f3b48;
  font-size: 13px;
}

.kxy-search {
  width: 300px;
  height: 36px;
  display: flex;
  overflow: hidden;
  border: 1px solid #d8e0e9;
  border-radius: 3px;
  background: #ffffff;
}

.kxy-search input {
  min-width: 0;
  flex: 1;
  padding: 0 14px;
  border: 0;
  outline: 0;
  color: #2f3b48;
}

.kxy-search button {
  width: 46px;
  border: 0;
  color: #ffffff;
  background: var(--kxy-blue-900);
}

.kxy-mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid #d8e0e9;
  border-radius: 3px;
  color: var(--kxy-blue-900);
  background: #ffffff;
  font-size: 23px;
}

.kxy-nav {
  background: linear-gradient(90deg, #07366f 0%, #084d96 55%, #07366f 100%);
  box-shadow: 0 3px 10px rgba(0, 42, 91, 0.13);
}

.kxy-nav__inner {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
}

.kxy-nav__item {
  position: relative;
  min-width: 0;
}

.kxy-nav__link {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
}

.kxy-nav__item:hover > .kxy-nav__link,
.kxy-nav__item.is-current > .kxy-nav__link {
  background: rgba(255, 255, 255, 0.08);
}

.kxy-nav__item.is-current > .kxy-nav__link::after,
.kxy-nav__item:hover > .kxy-nav__link::after {
  content: "";
  position: absolute;
  right: 24%;
  bottom: 0;
  left: 24%;
  height: 3px;
  background: var(--kxy-gold);
}

.kxy-subnav {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 190px;
  padding: 7px 0;
  visibility: hidden;
  opacity: 0;
  transform: translate(-50%, 10px);
  border-top: 3px solid var(--kxy-gold);
  background: #ffffff;
  box-shadow: var(--kxy-shadow);
  transition: 0.18s ease;
}

.kxy-nav__item:hover .kxy-subnav {
  visibility: visible;
  opacity: 1;
  transform: translate(-50%, 0);
}

.kxy-subnav a {
  display: block;
  padding: 10px 20px;
  color: #324151;
  font-size: 14px;
}

.kxy-subnav a:hover {
  color: var(--kxy-blue-800);
  background: #f2f7fb;
}

.kxy-section {
  padding: 42px 0;
}

.kxy-section--soft {
  background: var(--kxy-soft);
}

.kxy-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--kxy-line);
}

.kxy-heading h2 {
  position: relative;
  padding-left: 15px;
  color: var(--kxy-blue-900);
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.2;
}

.kxy-heading h2::before {
  content: "";
  position: absolute;
  top: 2px;
  bottom: 2px;
  left: 0;
  width: 4px;
  background: var(--kxy-gold);
}

.kxy-heading a {
  color: var(--kxy-blue-800);
  font-size: 14px;
}

.kxy-btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid var(--kxy-blue-800);
  border-radius: 3px;
  color: #ffffff;
  background: var(--kxy-blue-800);
  font-size: 14px;
}

.kxy-page-banner {
  min-height: 190px;
  display: flex;
  align-items: center;
  color: #ffffff;
  background:
    linear-gradient(90deg, rgba(4, 46, 98, 0.92), rgba(4, 67, 126, 0.58)),
    url("../images/banner-research.jpg") center 44% / cover no-repeat;
}

.kxy-page-banner h1 {
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.kxy-page-banner p {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.kxy-breadcrumb {
  min-height: 50px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--kxy-line);
  color: #7a8794;
  font-size: 14px;
}

.kxy-breadcrumb a:hover {
  color: var(--kxy-blue-800);
}

.kxy-site-footer {
  margin-top: 48px;
  color: rgba(255, 255, 255, 0.78);
  background: #063a78;
}

.kxy-footer__main {
  display: grid;
  grid-template-columns: 1.3fr 0.75fr 0.9fr;
  gap: 54px;
  padding: 42px 0 30px;
}

.kxy-footer__brand img {
  width: 310px;
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.kxy-footer__brand p {
  margin-top: 15px;
  font-size: 14px;
  line-height: 1.9;
}

.kxy-footer__title {
  margin-bottom: 13px;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
}

.kxy-footer__links a,
.kxy-footer__contact li {
  display: block;
  padding: 4px 0;
  font-size: 14px;
}

.kxy-footer__bottom {
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 13px;
  text-align: center;
}