:root {
  --ink: #061833;
  --muted: #526782;
  --blue: #064bb2;
  --blue-2: #0b82d8;
  --cyan: #20d4ff;
  --aqua: #7ce7f4;
  --line: #d8e7f7;
  --soft: #f5faff;
  --white: #ffffff;
  --navy: #031b49;
  --shadow: 0 24px 70px rgba(6, 75, 178, 0.14);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  line-height: 1.7;
  background: #fbfdff;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 20;
  background: var(--navy);
  color: white;
  padding: 10px 14px;
  border-radius: var(--radius);
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 76px;
  padding: 12px clamp(18px, 4vw, 56px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(216, 231, 247, 0.86);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 52px; height: 52px; border-radius: 12px; box-shadow: 0 10px 24px rgba(6, 75, 178, .18); }
.brand strong { display: block; font-size: 18px; line-height: 1.1; }
.brand small { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 10px 13px;
  border-radius: var(--radius);
  color: #153455;
  font-size: 15px;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { background: #eaf6ff; color: var(--blue); }
.main-nav .nav-cta { background: var(--blue); color: white; margin-left: 6px; }
.main-nav .nav-cta:hover { background: #043d91; color: white; }
.main-nav .nav-phone { color: var(--blue); font-weight: 900; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: white; border-radius: var(--radius); }
.nav-toggle span { display: block; height: 2px; width: 20px; background: var(--ink); margin: 5px auto; }

.section, .section-hero, .page-hero {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
}
.section { padding: 84px 0; }
.band {
  width: 100%;
  padding-left: max(18px, calc((100vw - 1160px) / 2));
  padding-right: max(18px, calc((100vw - 1160px) / 2));
  background: linear-gradient(180deg, #f5fbff 0%, #ffffff 100%);
  border-top: 1px solid #e2effb;
  border-bottom: 1px solid #e2effb;
}
.section-hero {
  min-height: calc(100vh - 76px);
  padding: 72px 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, .82fr);
  align-items: center;
  gap: 48px;
}
.hero h1, .page-hero h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.06;
  letter-spacing: 0;
}
.hero-text, .page-hero p {
  margin: 24px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}
.region {
  margin: 0 0 14px;
  color: var(--blue);
  font-weight: 700;
}
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-weight: 700;
}
.button.primary { background: var(--blue); color: white; box-shadow: 0 16px 38px rgba(6,75,178,.25); }
.button.secondary { border: 1px solid var(--line); color: var(--blue); background: white; }
.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 38px 0 0;
}
.hero-proof li {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.78);
}
.hero-proof strong { display: block; font-size: 26px; color: var(--blue); line-height: 1; }
.hero-proof span { color: var(--muted); font-size: 14px; }
.hero-visual {
  position: relative;
  padding: 26px;
  min-height: 520px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(6,75,178,.95), rgba(11,130,216,.82)),
    radial-gradient(circle at 20% 15%, rgba(124,231,244,.55), transparent 30%);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.11) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.16));
}
.hero-visual img {
  position: relative;
  width: min(360px, 100%);
  border-radius: 24px;
  margin: 34px auto 0;
  box-shadow: 0 30px 80px rgba(0, 18, 58, .35);
}
.scan-panel {
  position: relative;
  margin: 30px auto 0;
  max-width: 380px;
  padding: 20px;
  border: 1px solid rgba(255,255,255,.38);
  border-radius: var(--radius);
  color: white;
  background: rgba(2,20,57,.38);
}
.scan-panel span, .scan-panel em { display: block; opacity: .84; font-style: normal; }
.scan-panel strong { display: block; font-size: 20px; margin: 5px 0; }

.page-hero { padding: 82px 0 54px; }
.page-hero h1 { max-width: 980px; font-size: clamp(34px, 5vw, 58px); }
.section-heading { max-width: 820px; margin-bottom: 34px; }
.section-heading p { margin: 0 0 8px; color: var(--blue); font-weight: 700; }
.section-heading h2 { margin: 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.16; letter-spacing: 0; }
.two-column { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; color: #263b55; font-size: 18px; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.service-grid.detailed { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.service-card, .case-card, .deliverable-grid article, .process-grid article, .principle-grid article, .architecture-list article, .industry-grid article, .capability-grid article, blockquote {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 34px rgba(6, 75, 178, .06);
}
.service-card { padding: 22px; min-height: 100%; }
.service-index {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #e5f8ff;
  color: var(--blue);
  font-weight: 800;
}
.service-card h3 { margin: 18px 0 10px; font-size: 22px; }
.service-card h4 { margin: 18px 0 8px; font-size: 15px; color: var(--blue); }
.service-card p, .service-card li { color: var(--muted); font-size: 15px; }
.service-card ul { margin: 0; padding-left: 18px; }
.text-link {
  display: inline-flex;
  margin-top: 28px;
  color: var(--blue);
  font-weight: 800;
}

.process-grid, .deliverable-grid, .principle-grid, .architecture-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.process-grid article, .deliverable-grid article, .principle-grid article, .architecture-list article, .industry-grid article, .capability-grid article { padding: 24px; }
.process-grid span {
  display: inline-flex;
  color: var(--cyan);
  background: var(--navy);
  border-radius: var(--radius);
  padding: 4px 9px;
  font-weight: 800;
}
.process-grid h3, .deliverable-grid h3, .principle-grid h3, .architecture-list h3, .industry-grid h3, .capability-grid h3 { margin: 14px 0 8px; font-size: 20px; }
.process-grid p, .deliverable-grid p, .principle-grid p, .architecture-list p, .industry-grid p, .capability-grid p { margin: 0; color: var(--muted); }
.industry-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}
.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.geo-intro { margin-bottom: 24px; }

.case-list { display: grid; gap: 20px; }
.case-list.compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.case-card { padding: 28px; }
.case-tag {
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
}
.case-card h3 { margin: 10px 0 8px; font-size: 24px; }
.muted { color: var(--muted); }
.case-card dl { display: grid; gap: 12px; margin: 22px 0 0; }
.case-card dt { font-weight: 800; color: var(--navy); }
.case-card dd { margin: 0; color: var(--muted); }

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
blockquote { margin: 0; padding: 24px; }
blockquote p { margin: 0; color: #203a57; font-size: 17px; }
blockquote cite { display: block; margin-top: 16px; color: var(--blue); font-style: normal; font-weight: 800; }

.faq-list { display: grid; gap: 10px; }
.faq-list.all { gap: 12px; }
.faq-item {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  display: flex;
  gap: 14px;
  align-items: center;
  font-weight: 800;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span {
  flex: 0 0 auto;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.faq-item p { margin: 0; padding: 0 20px 20px 58px; color: var(--muted); }
.faq-tools { padding-bottom: 22px; }
.search-box { display: grid; gap: 8px; font-weight: 800; }
.search-box input {
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
}
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.category-filter button {
  border: 1px solid var(--line);
  background: white;
  color: #23415f;
  border-radius: 999px;
  padding: 8px 13px;
  cursor: pointer;
}
.category-filter button.active { background: var(--blue); color: white; border-color: var(--blue); }

.contact-section {
  display: grid;
  grid-template-columns: .88fr 1fr;
  gap: 34px;
  align-items: start;
  padding: 44px;
  margin-bottom: 84px;
  border-radius: 16px;
  color: white;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  box-shadow: var(--shadow);
}
.contact-section h2 { margin: 0 0 14px; font-size: clamp(28px, 4vw, 42px); line-height: 1.16; }
.contact-section p { color: rgba(255,255,255,.82); }
.contact-section .region { color: var(--aqua); }
.direct-contact {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 18px;
  font-weight: 900;
}
.direct-contact a {
  color: white;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.lead-form {
  display: grid;
  gap: 14px;
  padding: 20px;
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
}
.lead-form label { display: grid; gap: 7px; font-weight: 800; }
.lead-form input {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 12px;
  font: inherit;
}
.lead-form button {
  min-height: 48px;
  border: 0;
  border-radius: var(--radius);
  background: var(--blue);
  color: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.form-note { margin: 0; color: var(--muted) !important; font-size: 14px; }

.site-footer {
  display: grid;
  grid-template-columns: 1.4fr .8fr 1fr 1fr;
  gap: 28px;
  padding: 42px clamp(18px, 4vw, 56px);
  color: rgba(255,255,255,.82);
  background: #021532;
}
.site-footer img { border-radius: 10px; margin-bottom: 12px; }
.site-footer strong, .site-footer h2 { color: white; }
.site-footer h2 { font-size: 16px; margin: 0 0 10px; }
.site-footer a { display: block; margin: 6px 0; color: rgba(255,255,255,.82); }
.site-footer .phone-link { display: inline-block; color: white; font-size: 18px; font-weight: 900; }
.footer-icp {
  grid-column: 1 / -1;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.14);
  font-size: 13px;
}

.consult-widget {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  pointer-events: none;
}
.consult-float, .consult-popup {
  pointer-events: auto;
}
.consult-float {
  border: 0;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--blue-2));
  box-shadow: 0 18px 40px rgba(6, 75, 178, .28);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.consult-popup {
  position: absolute;
  right: 0;
  bottom: 62px;
  width: min(360px, calc(100vw - 32px));
  padding: 22px;
  border: 1px solid rgba(216, 231, 247, .95);
  border-radius: 14px;
  background: white;
  box-shadow: 0 26px 70px rgba(2, 21, 50, .22);
}
.consult-popup h2 {
  margin: 0 28px 8px 0;
  font-size: 22px;
  line-height: 1.25;
}
.consult-popup p { margin: 0 0 14px; color: var(--muted); }
.consult-popup .region { margin-bottom: 8px; color: var(--blue); }
.consult-close {
  position: absolute;
  right: 12px;
  top: 10px;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: white;
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.lead-form.mini {
  padding: 0;
  box-shadow: none;
}

@media (max-width: 1050px) {
  .service-grid, .industry-grid, .capability-grid, .case-list.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: auto; }
}

@media (max-width: 780px) {
  .site-header { min-height: 68px; padding: 10px 18px; }
  .brand img { width: 44px; height: 44px; }
  .brand small { display: none; }
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: white;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; }
  .main-nav .nav-cta { margin-left: 0; text-align: center; }
  .main-nav .nav-phone { text-align: center; }
  .section-hero { padding-top: 42px; min-height: auto; }
  .hero h1, .page-hero h1 { font-size: 38px; }
  .hero-text, .page-hero p { font-size: 16px; }
  .hero-proof, .two-column, .service-grid, .service-grid.detailed, .process-grid, .deliverable-grid, .principle-grid, .architecture-list, .industry-grid, .capability-grid, .case-list.compact, .testimonial-grid, .contact-section, .site-footer {
    grid-template-columns: 1fr;
  }
  .hero-proof { gap: 10px; }
  .section { padding: 58px 0; }
  .contact-section { padding: 28px; margin-bottom: 58px; }
  .faq-item summary { align-items: flex-start; }
  .faq-item p { padding-left: 20px; }
  .consult-widget { right: 14px; bottom: 14px; }
  .consult-popup { bottom: 58px; }
}

@media (max-width: 440px) {
  .section, .section-hero, .page-hero { width: min(100% - 28px, 1160px); }
  .hero-actions .button { width: 100%; }
  .hero-visual { padding: 18px; border-radius: 12px; }
  .service-card, .case-card, blockquote { padding: 20px; }
}