:root {
  --navy: #122d4d;
  --navy-deep: #0d2239;
  --blue: #1d578e;
  --gold: #a7834a;
  --ink: #182330;
  --muted: #627080;
  --line: #dce3ea;
  --wash: #f5f7f9;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }

.topbar { color: #d8e3ee; background: var(--navy-deep); font-size: 13px; }
.topbar-inner {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.topbar a { color: #fff; }
.site-header { position: relative; z-index: 20; background: #fff; border-bottom: 1px solid var(--line); }
.nav-wrap {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: "Songti SC", SimSun, serif;
  font-size: 23px;
  font-weight: 700;
  line-height: 1;
}
.brand strong, .footer-brand strong {
  display: block;
  color: var(--navy);
  font-family: "Songti SC", SimSun, serif;
  font-size: 21px;
  letter-spacing: 1px;
  line-height: 1.25;
}
.brand em {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
  letter-spacing: .8px;
}
.main-nav { display: flex; align-items: stretch; gap: 2px; }
.nav-link {
  display: inline-flex;
  min-height: 86px;
  align-items: center;
  padding: 0 14px;
  border-bottom: 3px solid transparent;
  color: #334251;
  font-size: 15px;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { border-bottom-color: var(--gold); color: var(--navy); font-weight: 700; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 9px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; margin: 4px 0; background: var(--navy); }

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--navy);
}
.hero::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 31, 54, .98), rgba(14, 41, 69, .92) 51%, rgba(14, 41, 69, .48));
  content: "";
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 480px;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
  align-items: center;
  gap: 68px;
  padding: 74px 0;
}
.hero-copy { max-width: 720px; }
.eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}
.hero h1, .page-banner h1 {
  margin: 0;
  font-family: "Songti SC", SimSun, serif;
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 700;
  line-height: 1.25;
}
.hero h1 span {
  display: block;
  margin-top: 10px;
  color: #e8edf3;
  font-family: "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-size: clamp(20px, 2.2vw, 29px);
  font-weight: 400;
  line-height: 1.5;
}
.hero p { max-width: 660px; margin: 22px 0 0; color: #d9e4ef; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 23px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.button-primary { color: #fff; background: var(--gold); }
.button-primary:hover { background: #89662f; }
.button-ghost { border-color: rgba(255, 255, 255, .65); color: #fff; }
.button-ghost:hover { background: rgba(255, 255, 255, .12); }
.portrait-panel {
  position: relative;
  width: min(100%, 380px);
  justify-self: end;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .28);
  background: #254b6e;
  box-shadow: 16px 18px 0 rgba(4, 19, 34, .27);
}
.portrait-panel img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; background: #d9e2e8; }
.portrait-caption { padding: 14px 18px; background: rgba(11, 32, 55, .95); color: #dce7ef; font-size: 13px; }
.portrait-caption strong { display: block; color: #fff; font-size: 16px; }
.hero-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 38px; }
.hero-metrics div { padding-left: 14px; border-left: 2px solid var(--gold); }
.hero-metrics strong { display: block; color: #fff; font-family: Georgia, "Times New Roman", serif; font-size: 25px; line-height: 1.3; }
.hero-metrics span { display: block; margin-top: 3px; color: #cad7e2; font-size: 12px; line-height: 1.55; }

.section { padding: 76px 0; }
.section.muted { background: var(--wash); }
.section-head { max-width: 740px; margin-bottom: 36px; }
.section-head.center { margin-right: auto; margin-left: auto; text-align: center; }
.section-head h2, .section-title {
  margin: 0;
  color: var(--navy);
  font-family: "Songti SC", SimSun, serif;
  font-size: 32px;
  line-height: 1.4;
}
.section-head p:not(.eyebrow) { margin: 14px 0 0; color: var(--muted); }
.split { display: grid; grid-template-columns: .55fr 1.45fr; gap: 72px; }
.section-kicker { padding-top: 9px; color: var(--gold); font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.lead { margin: 0; color: #3c4b5a; font-size: 17px; line-height: 2; }
.feature-grid { display: grid; gap: 0; margin-top: 30px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-grid.three { grid-template-columns: repeat(3, 1fr); }
.feature-grid article { min-height: 190px; padding: 25px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.feature-grid span, .area-number { color: var(--gold); font-family: Georgia, "Times New Roman", serif; font-size: 17px; }
.feature-grid h3, .service-card h3, .case-card h3, .article-item h3 {
  margin: 12px 0 8px;
  color: var(--navy);
  font-family: "Songti SC", SimSun, serif;
  font-size: 19px;
  line-height: 1.5;
}
.feature-grid p, .service-card p, .case-card p, .article-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.service-card { display: block; min-height: 220px; padding: 25px 22px; border: 1px solid var(--line); background: #fff; }
.service-card:hover { border-color: var(--blue); box-shadow: 0 8px 22px rgba(19, 45, 77, .08); }
.service-card .arrow { display: block; margin-top: 20px; color: var(--gold); font-size: 20px; line-height: 1; }
.section-action { margin-top: 28px; }
.text-link { color: var(--blue); font-size: 15px; font-weight: 700; }
.text-link:hover { color: var(--gold); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.process-card { min-height: 182px; padding: 26px 22px; border-top: 3px solid var(--gold); background: #fff; box-shadow: 0 5px 16px rgba(20, 45, 77, .06); }
.process-card span { color: var(--gold); font-family: Georgia, "Times New Roman", serif; font-size: 22px; }
.process-card h3 { margin: 10px 0 7px; color: var(--navy); font-family: "Songti SC", SimSun, serif; font-size: 19px; }
.process-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.case-preview { color: #fff; background: var(--navy); }
.case-preview .split { align-items: center; }
.case-panel h2 { margin: 0; color: #fff; font-family: "Songti SC", SimSun, serif; font-size: 32px; line-height: 1.45; }
.case-panel p { margin: 14px 0 0; color: #d8e2ec; }
.case-tags { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(255, 255, 255, .25); border-left: 1px solid rgba(255, 255, 255, .25); }
.case-tags a { min-height: 86px; padding: 18px 20px; border-right: 1px solid rgba(255, 255, 255, .25); border-bottom: 1px solid rgba(255, 255, 255, .25); color: #edf3f7; font-size: 15px; }
.case-tags a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.article-list { border-top: 1px solid var(--line); }
.article-item { display: grid; grid-template-columns: 88px minmax(0, 1fr) 24px; align-items: center; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.article-item:hover h3 { color: var(--blue); }
.article-index { color: var(--gold); font-family: Georgia, "Times New Roman", serif; font-size: 18px; }
.article-item h3 { margin: 0 0 5px; }
.article-arrow { color: var(--gold); font-size: 21px; text-align: right; }
.platform-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 50px; align-items: start; }
.platform-intro { color: var(--muted); }
.platform-list { border-top: 1px solid var(--line); }
.platform-row { display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 15px; min-height: 70px; border-bottom: 1px solid var(--line); }
.platform-row .platform-type { color: var(--gold); font-size: 13px; }
.platform-row strong { color: var(--navy); font-size: 15px; }
.platform-row small { color: var(--muted); font-size: 13px; }
.platform-row:hover strong { color: var(--blue); }
.pending { color: var(--muted); }
.notice { margin: 22px 0 0; padding: 16px 18px; border-left: 3px solid var(--gold); color: #617080; background: #fbfcfd; font-size: 14px; }
.cta-band { color: #fff; background: var(--gold); }
.cta-inner { display: flex; min-height: 170px; align-items: center; justify-content: space-between; gap: 35px; }
.cta-inner span { display: block; color: #fff9ef; font-size: 14px; }
.cta-inner h2 { margin: 7px 0 0; font-family: "Songti SC", SimSun, serif; font-size: 28px; line-height: 1.45; }
.button-light { flex: 0 0 auto; color: var(--navy); background: #fff; }
.button-light:hover { background: #f5f7f9; }

.site-footer { color: #c9d7e2; background: var(--navy-deep); }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr .9fr; gap: 65px; padding: 52px 0; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-mark { flex: 0 0 auto; }
.footer-brand strong { color: #fff; }
.footer-brand div span { display: block; margin-top: 3px; color: #b8c8d5; font-size: 11px; letter-spacing: .8px; }
.footer-grid p { margin: 14px 0 0; font-size: 14px; line-height: 1.8; }
.footer-grid h3 { margin: 3px 0 12px; color: #fff; font-size: 16px; }
.footer-grid a:not(.brand) { display: block; margin: 6px 0; color: #d9e4ec; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.disclaimer { color: #aebeca; }
.copyright a { color: inherit; text-decoration: none; }
.copyright a:hover { color: #fff; text-decoration: underline; }
.copyright { display: flex; justify-content: space-between; gap: 20px; padding: 16px max(20px, calc((100% - var(--container)) / 2)); border-top: 1px solid rgba(255, 255, 255, .16); color: #9cb0c0; font-size: 12px; }

.page-banner { color: #fff; background: linear-gradient(115deg, var(--navy-deep), #285980); }
.page-banner .container { padding: 55px 0 60px; }
.page-banner h1 { font-size: 40px; }
.page-banner p { max-width: 750px; margin: 14px 0 0; color: #dce6ee; }
.breadcrumb { margin-bottom: 14px; color: #aec3d5; font-size: 13px; }
.breadcrumb a:hover { color: #fff; }
.profile-layout { display: grid; grid-template-columns: minmax(240px, .65fr) minmax(0, 1.35fr); gap: 62px; }
.profile-photo { overflow: hidden; border: 1px solid var(--line); background: var(--wash); }
.profile-photo + .profile-photo { margin-top: 18px; }
.profile-photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.image-pending { padding: 14px 17px; color: var(--muted); font-size: 13px; }
.facts { border-top: 1px solid var(--line); }
.fact-row { display: grid; grid-template-columns: 150px 1fr; gap: 26px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.fact-row span { color: var(--muted); font-size: 14px; }
.fact-row strong { color: #344555; font-size: 15px; font-weight: 400; }
.content-prose h2 { margin: 36px 0 12px; color: var(--navy); font-family: "Songti SC", SimSun, serif; font-size: 25px; }
.content-prose p { margin: 0 0 16px; color: #3d4c5a; }
.content-prose ul { margin: 0; padding-left: 20px; color: #3d4c5a; }
.content-prose li { margin: 8px 0; }
.honor-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 360px)); justify-content: center; gap: 18px; margin-top: 28px; }
.honor-card { overflow: hidden; border: 1px solid var(--line); background: #fff; }
.honor-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--wash); }
.area-list { display: grid; gap: 14px; }
.area-card { display: grid; grid-template-columns: 65px minmax(0, 1fr); gap: 20px; padding: 25px 28px; border: 1px solid var(--line); background: #fff; }
.area-card h2 { margin: 0 0 6px; color: var(--navy); font-family: "Songti SC", SimSun, serif; font-size: 23px; }
.area-card p { margin: 0; color: var(--muted); }
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.case-card { display: flex; min-height: 265px; flex-direction: column; padding: 28px; border: 1px solid var(--line); background: #fff; }
.case-card h3 { font-size: 22px; }
.case-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--gold); font-size: 13px; }
.case-result { margin-top: auto; padding-top: 20px; color: #415263; font-size: 14px; }
.case-result strong { display: block; margin-top: 4px; color: var(--navy); font-size: 16px; }
.case-disclaimer { margin-top: 28px; color: var(--muted); font-size: 14px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: grid; grid-template-columns: 45px 1fr 24px; gap: 12px; align-items: center; padding: 20px 0; color: var(--navy); cursor: pointer; font-family: "Songti SC", SimSun, serif; font-size: 20px; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span, .faq-list summary b { color: var(--gold); font-family: Georgia, "Times New Roman", serif; font-size: 16px; }
.faq-list details p { max-width: 890px; margin: 0 0 22px 57px; color: var(--muted); }
.contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; }
.contact-card { padding: 34px; border-top: 4px solid var(--gold); background: var(--navy); color: #dce7ef; }
.contact-card h3 { margin: 0; color: #fff; font-family: "Songti SC", SimSun, serif; font-size: 27px; }
.phone-number { display: block; margin: 18px 0 26px; color: #fff; font-family: Georgia, "Times New Roman", serif; font-size: 33px; line-height: 1.2; }
.contact-item { padding: 15px 0; border-top: 1px solid rgba(255, 255, 255, .18); }
.contact-item span { display: block; color: #a8c0d4; font-size: 13px; }
.contact-item strong { display: block; margin-top: 4px; color: #fff; font-size: 15px; font-weight: 400; line-height: 1.7; }

@media (max-width: 960px) {
  .nav-wrap { min-height: 72px; }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none; padding: 8px 20px 16px; border-bottom: 1px solid var(--line); background: #fff; box-shadow: 0 10px 18px rgba(17, 45, 76, .08); }
  .main-nav.open { display: block; }
  .nav-link { display: flex; min-height: 46px; padding: 0; border-bottom: 1px solid var(--line); }
  .nav-link:hover, .nav-link.active { border-bottom-color: var(--line); }
  .hero-grid, .split, .profile-layout, .platform-layout, .contact-layout { grid-template-columns: 1fr; gap: 35px; }
  .hero-grid { padding: 54px 0; }
  .portrait-panel { width: min(100%, 400px); justify-self: start; }
  .service-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 35px; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { width: min(calc(100% - 32px), var(--container)); }
  .topbar-inner { min-height: 34px; font-size: 11px; }
  .topbar-inner span { display: none; }
  .topbar-inner a { margin-left: auto; }
  .brand-mark { width: 37px; height: 37px; font-size: 20px; }
  .brand strong { font-size: 18px; }
  .brand em { font-size: 10px; }
  .hero-grid { min-height: 0; padding: 44px 0; }
  .hero h1, .page-banner h1 { font-size: 34px; }
  .hero h1 span { font-size: 19px; }
  .hero-metrics { grid-template-columns: 1fr; gap: 12px; }
  .section { padding: 52px 0; }
  .section-head h2, .section-title, .case-panel h2 { font-size: 27px; }
  .feature-grid.three, .service-grid, .process-grid, .case-grid, .case-tags { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 0; }
  .article-item { grid-template-columns: 38px minmax(0, 1fr) 18px; gap: 10px; }
  .article-item h3 { font-size: 17px; }
  .platform-row { grid-template-columns: 1fr auto; gap: 3px 15px; padding: 14px 0; }
  .platform-row .platform-type, .platform-row strong { grid-column: 1; }
  .platform-row small { grid-column: 2; grid-row: 1 / 3; align-self: center; }
  .cta-inner { min-height: 0; flex-direction: column; align-items: flex-start; padding: 42px 0; }
  .cta-inner h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
  .copyright { display: block; }
  .copyright div + div { margin-top: 5px; }
  .fact-row { grid-template-columns: 1fr; gap: 3px; }
  .honor-grid { grid-template-columns: 1fr; }
  .area-card { grid-template-columns: 1fr; gap: 7px; padding: 22px; }
  .case-card { min-height: 0; padding: 23px; }
  .faq-list summary { grid-template-columns: 32px 1fr 18px; font-size: 17px; }
  .faq-list details p { margin-left: 0; }
  .contact-card { padding: 25px; }
  .phone-number { font-size: 27px; }
}