:root {
  --blue: #0057e8;
  --blue-2: #0b8dff;
  --blue-3: #dfeeff;
  --navy: #071b46;
  --text: #24355f;
  --muted: #6c7da5;
  --line: #e6edf8;
  --bg: #f7fbff;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(19, 75, 148, 0.10);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(220,230,248,.9);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 82px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-weight: 800; font-style: italic; letter-spacing: .2px; }
.brand img { width: 176px; height: auto; display: block; }
.brand span { display: none; }
.nav-menu { display: flex; align-items: stretch; gap: 8px; }
.nav-menu a { position: relative; min-width: 84px; padding: 18px 6px 15px; text-align: center; color: #172647; }
.nav-menu strong { display: block; font-size: 13px; font-weight: 700; white-space: nowrap; }
.nav-menu small { display: block; margin-top: 3px; font-size: 10px; color: var(--muted); white-space: nowrap; }
.nav-menu a.active::after, .nav-menu a:hover::after { content: ""; position: absolute; left: 18px; right: 18px; bottom: 0; height: 4px; border-radius: 4px 4px 0 0; background: linear-gradient(90deg, var(--blue), var(--blue-2)); }
.mobile-toggle { display: none; background: transparent; border: 0; padding: 10px; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; border-radius: 2px; }

.hero { position: relative; min-height: 560px; overflow: hidden; border-bottom: 1px solid var(--line); background: linear-gradient(90deg,#fff 0%,#f3f9ff 48%,#e7f4ff 100%); }
.hero-bg { position: absolute; inset: 0; background: radial-gradient(circle at 82% 22%, rgba(36,153,255,.28), transparent 28%), linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.78) 42%, rgba(255,255,255,.08) 70%); z-index: 1; }
.hero-content { position: relative; z-index: 2; display: grid; grid-template-columns: 45% 55%; align-items: center; min-height: 560px; }
.hero-copy { padding: 70px 0; }
.eyebrow { width: 50px; height: 5px; border-radius: 6px; background: linear-gradient(90deg, var(--blue), var(--blue-2)); margin-bottom: 24px; }
.hero h1 { margin: 0; color: var(--navy); font-size: clamp(38px, 5vw, 62px); line-height: 1.05; letter-spacing: -1.6px; }
.hero p { max-width: 530px; margin: 26px 0 32px; font-size: 17px; color: #2c3f69; }
.hero-actions { display: flex; gap: 24px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-width: 150px; height: 52px; padding: 0 24px; border-radius: 6px; font-weight: 700; transition: .2s ease; }
.btn span { margin-left: 14px; font-size: 24px; line-height: 0; }
.btn.primary { color: #fff; background: linear-gradient(135deg, var(--blue), #006ffd); box-shadow: 0 12px 24px rgba(0,87,232,.22); }
.btn.secondary { color: var(--blue); background: rgba(255,255,255,.65); border: 1px solid #8ab9ff; }
.btn:hover { transform: translateY(-2px); }
.hero-visual { position: relative; height: 460px; }
.city { position: absolute; right: 0; bottom: 70px; display: flex; align-items: flex-end; gap: 14px; width: 88%; height: 350px; }
.city span { width: 70px; height: var(--h); border-radius: 10px 10px 0 0; background: linear-gradient(180deg, rgba(7,105,232,.85), rgba(0,40,120,.88)); box-shadow: inset 0 0 0 1px rgba(255,255,255,.35), 0 20px 45px rgba(0,70,170,.28); position: relative; animation: rise 1.2s ease both; animation-delay: var(--d); }
.city span::before { content: ""; position: absolute; inset: 16px 12px; background: repeating-linear-gradient(to bottom, rgba(255,255,255,.65) 0 2px, transparent 2px 18px); opacity: .55; }
@keyframes rise { from { transform: translateY(30px); opacity: .2; } to { transform: translateY(0); opacity: 1; } }
.chart-lines { position: absolute; right: 0; bottom: 78px; width: 100%; height: 210px; background: linear-gradient(180deg, transparent 70%, rgba(255,255,255,.9)), repeating-linear-gradient(90deg, transparent 0 34px, rgba(16,120,255,.55) 35px 39px); clip-path: polygon(0 78%, 18% 63%, 33% 68%, 48% 47%, 64% 50%, 78% 28%, 100% 35%, 100% 100%, 0 100%); opacity: .8; }
.road-lines { position: absolute; right: -12%; bottom: 18px; width: 116%; height: 180px; background: radial-gradient(ellipse at 68% 90%, transparent 0 30%, rgba(0,105,255,.88) 31% 33%, transparent 34% 38%, rgba(68,184,255,.8) 39% 41%, transparent 42%); transform: skewY(-7deg); filter: drop-shadow(0 0 12px rgba(0,132,255,.55)); }
.map-dots { position: absolute; right: 12%; top: 42px; width: 360px; height: 170px; opacity: .28; background-image: radial-gradient(circle, #0078ff 1.5px, transparent 1.7px); background-size: 14px 14px; mask-image: radial-gradient(ellipse, #000 40%, transparent 72%); }
.slider-dots { position: absolute; left: 50%; bottom: 24px; z-index: 3; display: flex; gap: 10px; transform: translateX(-50%); }
.slider-dots span { width: 32px; height: 5px; border-radius: 5px; background: rgba(255,255,255,.85); }
.slider-dots .active { background: var(--blue); }

.section { padding: 44px 0; }
.section-head, .panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 22px; margin-bottom: 22px; }
h2 { margin: 0; color: var(--navy); font-size: 30px; line-height: 1.2; letter-spacing: -.5px; }
.section-head p, .panel-head p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.text-link { color: var(--blue); font-weight: 700; font-size: 14px; white-space: nowrap; }
.text-link span, .bottom-link span, .service-card a span, .article-grid a span { font-size: 18px; margin-left: 6px; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.service-card, .content-card, .search-panel { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); overflow: hidden; }
.service-card { min-height: 260px; padding: 32px 26px 24px; }
.service-card::after { content: ""; position: absolute; right: -1px; bottom: 0; width: 120px; height: 55px; background: linear-gradient(135deg, transparent 48%, #cfe5ff 49% 51%, transparent 52%), linear-gradient(0deg, transparent 48%, #cfe5ff 49% 51%, transparent 52%); opacity: .8; }
.service-card h3 { margin: 18px 0 2px; color: var(--navy); font-size: 19px; }
.service-card h4 { margin: 0; color: #172647; font-size: 15px; font-weight: 500; }
.service-card p { margin: 26px 0 20px; color: #4d5f87; font-size: 14px; }
.service-card a { position: relative; z-index: 2; color: var(--blue); font-weight: 700; font-size: 13px; }
.icon { width: 64px; height: 64px; background: linear-gradient(135deg, #50b9ff, var(--blue)); position: relative; }
.icon.flask { clip-path: polygon(35% 0,65% 0,65% 28%,90% 82%,78% 100%,22% 100%,10% 82%,35% 28%); }
.icon.flask::before { content: ""; position: absolute; left: 20%; right: 20%; bottom: 22%; height: 16%; border-radius: 20px; background: rgba(255,255,255,.75); }
.icon.pie { border-radius: 50%; background: conic-gradient(from 0deg, #0a63ee 0 75%, #8dcaff 75% 100%); }
.icon.cubes { background: none; }
.icon.cubes::before, .icon.cubes::after, .icon.search::before { content: ""; position: absolute; background: linear-gradient(135deg, #6dccff, #0056e9); }
.icon.cubes::before { width: 28px; height: 28px; left: 18px; top: 0; clip-path: polygon(50% 0,100% 28%,100% 72%,50% 100%,0 72%,0 28%); box-shadow: -20px 32px 0 #2788ff, 20px 32px 0 #0b60e6; }
.icon.search { border-radius: 10px; }
.icon.search::before { width: 26px; height: 26px; border: 6px solid #fff; background: transparent; border-radius: 50%; left: 22px; top: 20px; }
.icon.search::after { content: ""; width: 18px; height: 6px; background: #fff; position: absolute; right: 9px; bottom: 15px; transform: rotate(45deg); border-radius: 6px; }

.product-search-section { padding-top: 0; }
.search-panel { padding: 26px; }
.search-panel .panel-head { margin-bottom: 14px; }
.search-form { display: grid; grid-template-columns: 1fr 58px; gap: 0; max-width: 570px; float: left; width: 58%; }
.search-form input { height: 48px; border: 1px solid #cddbf0; border-radius: 6px 0 0 6px; padding: 0 18px; outline: none; color: var(--text); }
.search-form input:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(0,87,232,.08); }
.search-form button { border: 0; border-radius: 0 6px 6px 0; background: linear-gradient(135deg, var(--blue), #0079ff); color: #fff; font-size: 24px; cursor: pointer; }
.filter-chips { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; padding-top: 6px; }
.filter-chips button { height: 34px; padding: 0 18px; background: #fff; border: 1px solid #cddbf0; border-radius: 5px; color: #486088; cursor: pointer; }
.filter-chips button.active, .filter-chips button:hover { color: var(--blue); border-color: #8bbcff; background: #f4f9ff; }
.search-panel::after { content: ""; display: table; clear: both; }

.info-education { padding-top: 0; }
.two-col { display: grid; grid-template-columns: .85fr 1.15fr; gap: 22px; }
.content-card { padding: 24px; }
.announcement-list { list-style: none; padding: 0; margin: 0; }
.announcement-list li { display: grid; grid-template-columns: 34px 1fr auto; gap: 14px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); }
.announcement-list strong { display: block; color: #243866; font-size: 14px; }
.announcement-list small { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.announcement-list time { color: #64769d; font-size: 12px; white-space: nowrap; }
.list-icon { display: grid; place-items: center; width: 28px; height: 28px; color: #fff; font-size: 10px; font-weight: 800; border-radius: 50%; background: var(--blue); }
.list-icon.document, .list-icon.bell, .list-icon.chart { border-radius: 6px; background: #e9f3ff; border: 2px solid var(--blue); }
.bottom-link { display: block; margin-top: 18px; text-align: right; color: var(--blue); font-weight: 700; font-size: 14px; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.article-grid article { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; }
.article-img { height: 120px; background: #0a54d6; }
.chart-bg { background: linear-gradient(135deg,#061d58,#075eff), repeating-linear-gradient(90deg, transparent 0 22px, rgba(255,255,255,.45) 23px 27px); }
.globe-bg { background: radial-gradient(circle at center, rgba(113,211,255,.9), transparent 34%), linear-gradient(135deg,#061b55,#006dff); }
.skyline-bg { background: linear-gradient(180deg, #b9e3ff 0%, #ffffff 55%, #0b61db 56%, #063d94 100%); }
.article-grid h3 { margin: 16px 16px 8px; color: var(--navy); font-size: 16px; line-height: 1.25; }
.article-grid p { margin: 0 16px 16px; color: #617092; font-size: 13px; }
.article-grid a { display: block; margin: 0 16px 18px; color: var(--blue); font-weight: 700; font-size: 13px; }

.contact-strip { position: relative; background: linear-gradient(135deg, #004bdd, #0aa1ff); color: #fff; overflow: hidden; }
.contact-strip::before, .contact-strip::after { content: ""; position: absolute; width: 270px; height: 90px; border: 1px solid rgba(255,255,255,.32); transform: skewX(-25deg); }
.contact-strip::before { left: -60px; bottom: 18px; }
.contact-strip::after { right: -50px; top: 18px; }
.contact-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 26px; align-items: center; min-height: 118px; }
.contact-title h2 { color: #fff; }
.contact-title p, .contact-item p { margin: 4px 0 0; color: rgba(255,255,255,.82); font-size: 14px; }
.contact-item { display: flex; align-items: center; gap: 16px; border-left: 1px solid rgba(255,255,255,.28); padding-left: 28px; }
.contact-item span { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; font-size: 23px; }
.contact-item strong { display: block; }

.site-footer { background: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.55fr repeat(4, 1fr); gap: 46px; padding: 46px 0 34px; }
.footer-brand .brand img { width: 170px; }
.footer-brand p { max-width: 300px; color: #5e6e90; font-size: 14px; }
.site-footer h3 { margin: 0 0 14px; color: var(--navy); font-size: 16px; }
.site-footer a:not(.brand) { display: block; color: #687899; margin: 9px 0; font-size: 14px; }
.site-footer a:hover { color: var(--blue); }
.socials { display: flex; gap: 12px; }
.socials a { display: grid !important; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: #112347; color: #fff !important; font-weight: 800; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 22px; border-top: 1px solid var(--line); padding: 18px 0; color: #7484a4; font-size: 12px; }
.footer-bottom p { margin: 0; }
.footer-bottom nav { display: flex; gap: 34px; }
.footer-bottom a { margin: 0 !important; color: #7484a4 !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

@media (max-width: 1024px) {
  .header-inner { min-height: 72px; }
  .mobile-toggle { display: block; }
  .nav-menu { position: absolute; left: 0; right: 0; top: 72px; display: none; flex-direction: column; background: #fff; padding: 14px 24px 24px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav-menu.open { display: flex; }
  .nav-menu a { text-align: left; min-width: auto; padding: 10px 0; }
  .nav-menu a.active::after, .nav-menu a:hover::after { left: 0; right: auto; width: 42px; bottom: 0; }
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { position: absolute; right: -25%; top: 100px; width: 80%; opacity: .45; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr 1fr; padding: 24px 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .container { width: min(100% - 28px, 1180px); }
  .brand img { width: 150px; }
  .hero { min-height: 620px; }
  .hero-copy { padding: 54px 0; }
  .hero p { font-size: 15px; }
  .hero-visual { width: 120%; right: -55%; opacity: .32; }
  .service-grid, .article-grid, .contact-inner, .footer-grid { grid-template-columns: 1fr; }
  .search-form { float: none; width: 100%; max-width: none; }
  .filter-chips { justify-content: flex-start; margin-top: 14px; }
  .announcement-list li { grid-template-columns: 28px 1fr; }
  .announcement-list time { grid-column: 2; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .footer-bottom nav { gap: 18px; flex-wrap: wrap; }
}