: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;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p, li, dd, a { overflow-wrap: anywhere; }
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; }
.top-contact-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  min-height: 38px;
  padding: 6px 18px;
  color: white;
  background: var(--navy);
  font-size: 14px;
  font-weight: 700;
}
.top-contact-bar a {
  color: var(--aqua);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
}
.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, 0.94);
  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: 4px; }
.main-nav a {
  padding: 10px 10px;
  border-radius: var(--radius);
  color: #153455;
  font-size: 14px;
  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: 4px; }
.main-nav .nav-cta:hover { background: #043d91; color: white; }
.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 - 114px);
  padding: 70px 0 56px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .8fr);
  align-items: center;
  gap: 48px;
}
.hero h1, .page-hero h1 {
  margin: 0;
  font-size: clamp(36px, 5.8vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
  max-width: 100%;
  word-break: break-word;
  text-wrap: balance;
}
.hero-text, .page-hero p {
  margin: 24px 0 0;
  max-width: 820px;
  color: var(--muted);
  font-size: 18px;
}
.region {
  margin: 0 0 14px;
  color: var(--blue);
  font-weight: 800;
}
.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: 800;
}
.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, .stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 38px 0 0;
}
.stat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; }
.hero-proof li, .stat-grid article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.82);
}
.hero-proof strong, .stat-grid strong { display: block; font-size: 28px; color: var(--blue); line-height: 1; }
.hero-proof span, .stat-grid span { color: var(--muted); font-size: 14px; }
.hero-visual {
  position: relative;
  padding: 26px;
  min-height: 510px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(6,75,178,.96), rgba(11,130,216,.84)),
    radial-gradient(circle at 20% 15%, rgba(124,231,244,.48), transparent 30%);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.12) 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: 390px;
  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: 1000px; font-size: clamp(34px, 5vw, 58px); }
.section-heading { max-width: 850px; margin-bottom: 34px; }
.section-heading p { margin: 0 0 8px; color: var(--blue); font-weight: 800; }
.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, .industry-grid, .process-grid, .capability-grid, .advantage-grid, .evidence-grid, .architecture-grid, .principle-grid, .diagnosis-grid, .platform-grid {
  display: grid;
  gap: 16px;
}
.service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-grid.detailed { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.industry-grid, .process-grid, .capability-grid, .advantage-grid, .evidence-grid, .architecture-grid, .principle-grid, .platform-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.diagnosis-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.diagnosis-grid.four-up { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.premium-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.service-card, .case-card, .diagnosis-grid article, .deliverable-grid article, .six-step-flow article, .process-grid article, .principle-grid article, .architecture-grid article, .industry-grid article, .capability-grid article, .advantage-grid article, .evidence-grid article, .platform-card, .detail-main, .detail-card, .answer-card, .answer-index-card, blockquote, .loop-grid article {
  min-width: 0;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 34px rgba(6, 75, 178, .06);
}
.service-card, .case-card, .diagnosis-grid article, .deliverable-grid article, .process-grid article, .principle-grid article, .architecture-grid article, .industry-grid article, .capability-grid article, .advantage-grid article, .evidence-grid article, .platform-card, .answer-index-card, .loop-grid article { padding: 24px; }
.service-index {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #e5f8ff;
  color: var(--blue);
  font-weight: 900;
}
.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; }
.industry-card span, .case-tag {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}
.industry-card mark {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #e5f8ff;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}
.industry-card.featured-industry {
  border-color: rgba(6, 75, 178, .38);
  box-shadow: 0 16px 42px rgba(6, 75, 178, .12);
}
.text-link, .card-link, .answer-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--blue);
  font-weight: 900;
}
.text-link { margin-top: 28px; }
.loop-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.loop-grid article span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--cyan);
  font-weight: 900;
}
.loop-grid h3, .process-grid h3, .diagnosis-grid h3, .principle-grid h3, .architecture-grid h3, .industry-grid h3, .capability-grid h3, .advantage-grid h3, .evidence-grid h3, .platform-grid h3 { margin: 14px 0 8px; font-size: 20px; }
.loop-grid p, .process-grid p, .diagnosis-grid p, .principle-grid p, .architecture-grid p, .industry-grid p, .capability-grid p, .advantage-grid p, .evidence-grid p, .platform-grid p { margin: 0; color: var(--muted); }
.platform-card {
  display: grid;
  align-content: start;
  gap: 14px;
}
.platform-card > div {
  display: grid;
  gap: 6px;
}
.platform-card span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}
.platform-card h3 { margin: 0; font-size: 24px; }
.platform-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.platform-card li {
  padding: 5px 9px;
  border-radius: 999px;
  background: #edf7ff;
  color: #23415f;
  font-size: 12px;
  font-weight: 800;
}
.process-grid span {
  display: inline-flex;
  color: var(--cyan);
  background: var(--navy);
  border-radius: var(--radius);
  padding: 4px 9px;
  font-weight: 900;
}
.capability-grid { margin-top: 18px; }
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .46fr);
  gap: 24px;
  align-items: start;
}
.detail-main, .answer-card { padding: clamp(24px, 4vw, 42px); }
.detail-main h2, .answer-card h2 { margin: 26px 0 10px; font-size: 24px; }
.detail-main h2:first-of-type, .answer-card h2:first-of-type { margin-top: 0; }
.detail-main p, .answer-card p { color: #263b55; }
.detail-main ul, .detail-card ul, .answer-card ul { margin: 0; padding-left: 20px; color: var(--muted); }
.detail-side { display: grid; gap: 14px; }
.detail-card { padding: 22px; }
.detail-card h2 { margin: 0 0 12px; font-size: 18px; }
.breadcrumb { margin: 0 0 22px; color: var(--muted) !important; font-size: 14px; }
.breadcrumb a { color: var(--blue); font-weight: 900; }
.source-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0 !important;
  padding-left: 0 !important;
  list-style: none;
}
.source-list li {
  display: grid;
  grid-template-columns: minmax(0, 130px) minmax(0, 1fr);
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
  min-width: 0;
}
.source-list strong { color: var(--navy); min-width: 0; }
.source-list a, .source-list span {
  display: block;
  min-width: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
  word-break: break-all;
}
.answer-meta { display: grid; gap: 10px; margin: 28px 0 0; }
.answer-meta div {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}
.answer-meta dt { color: var(--navy); font-weight: 900; }
.answer-meta dd { margin: 0; color: var(--muted); }
.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.related-links a {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--blue);
  font-weight: 800;
}
.related-links span { display: block; color: var(--muted); font-size: 12px; }
.answer-links { margin-top: 30px; }
.answer-detail { max-width: 920px; }
.status-badge {
  display: inline-flex;
  padding: 5px 10px;
  border-radius: 999px;
  background: #eaf6ff;
  color: var(--blue);
  font-weight: 900;
  font-size: 13px;
}
.status-badge.professional_review, .status-badge.compliance_review { color: #7d4b00; background: #fff4d7; }
.status-badge.evidence_pending { color: #51606f; background: #eef3f8; }
.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.geo-method-section {
  background:
    radial-gradient(circle at 14% 18%, rgba(32, 212, 255, .16), transparent 28%),
    linear-gradient(180deg, #f5fbff 0%, #ffffff 100%);
}
.geo-method-layout {
  width: min(1160px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}
.geo-method-copy {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(320px, .85fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: end;
}
.geo-method-copy h2 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.14;
  letter-spacing: 0;
}
.geo-method-copy > p:not(.region) { margin: 20px 0 0; color: #314762; font-size: 17px; max-width: 660px; }
.six-step-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.six-step-flow article {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  min-height: 148px;
  padding: 24px;
  overflow: hidden;
}
.six-step-flow article:before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}
.step-number {
  display: inline-flex;
  width: 58px;
  height: 58px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--navy);
  color: var(--cyan);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0;
}
.six-step-flow h3 { margin: 2px 0 6px; font-size: 21px; }
.six-step-flow p { margin: 0; color: var(--muted); }
.case-list { display: grid; gap: 20px; }
.case-list.compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.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: 900; 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: 900; }
.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: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  font-weight: 900;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { color: var(--blue); font-variant-numeric: tabular-nums; }
.faq-item summary em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}
.faq-item p { margin: 0; padding: 0 20px 14px 58px; color: var(--muted); }
.faq-item .answer-link { margin: 0 20px 20px 58px; font-size: 14px; }
.faq-tools { padding-bottom: 22px; }
.search-box { display: grid; gap: 8px; font-weight: 900; }
.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); }
.faq-groups { display: grid; gap: 28px; }
.faq-group h3 { margin: 0 0 12px; font-size: 22px; }
.answer-index-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.answer-index-card span {
  display: block;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}
.answer-index-card h3 { margin: 10px 0 10px; font-size: 21px; line-height: 1.35; }
.answer-index-card h3 a { color: var(--navy); }
.answer-index-card p { margin: 0; color: var(--muted); }
.answer-index-card dl { display: grid; gap: 8px; margin: 18px 0 0; }
.answer-index-card div { display: grid; grid-template-columns: 78px minmax(0, 1fr); gap: 10px; border-top: 1px solid var(--line); padding-top: 8px; }
.answer-index-card dt { color: var(--navy); font-weight: 900; }
.answer-index-card dd { margin: 0; color: var(--muted); }
.knowledge-table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.knowledge-table { width: 100%; min-width: 900px; border-collapse: collapse; }
.knowledge-table th, .knowledge-table td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.knowledge-table th { color: var(--navy); background: #edf7ff; }
.knowledge-table a { color: var(--blue); font-weight: 900; }
.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,.84); }
.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; }
.about-contact-copy { min-height: 100%; display: flex; flex-direction: column; }
.company-address { margin-top: auto; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.2); font-weight: 900; }
.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: 900; }
.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: 900;
  cursor: pointer;
}
.lead-form button:disabled { cursor: wait; opacity: .72; }
.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;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  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: 900;
  cursor: pointer;
}
.consult-popup {
  position: absolute;
  right: 0;
  bottom: 72px;
  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: 1120px) {
  .service-grid, .industry-grid, .capability-grid, .advantage-grid, .evidence-grid, .architecture-grid, .principle-grid, .platform-grid, .case-list.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-grid, .diagnosis-grid, .loop-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .diagnosis-grid.four-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: auto; }
  .geo-method-copy { grid-template-columns: 1fr; }
  .six-step-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 780px) {
  .top-contact-bar { flex-wrap: wrap; gap: 6px 10px; justify-content: flex-start; }
  .top-contact-bar a { font-size: 16px; }
  .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; }
  .section-hero { padding-top: 42px; min-height: auto; }
  .page-hero { padding: 62px 0 42px; }
  .hero h1, .page-hero h1 { font-size: clamp(28px, 7.8vw, 34px); line-height: 1.16; word-break: break-all; }
  .hero-text, .page-hero p, .service-card p, .service-card li, .answer-card p, .answer-card li { word-break: break-all; }
  .hero-text, .page-hero p { font-size: 16px; }
  .hero-proof, .stat-grid, .two-column, .service-grid, .service-grid.detailed, .process-grid, .deliverable-grid, .principle-grid, .architecture-grid, .industry-grid, .capability-grid, .advantage-grid, .evidence-grid, .platform-grid, .diagnosis-grid, .loop-grid, .answer-index-grid, .case-list.compact, .testimonial-grid, .contact-section, .site-footer, .detail-layout, .related-links {
    grid-template-columns: 1fr;
  }
  .six-step-flow { grid-template-columns: 1fr; }
  .six-step-flow article { grid-template-columns: 54px minmax(0, 1fr); gap: 14px; min-height: auto; padding: 16px; }
  .step-number { width: 54px; height: 54px; font-size: 16px; }
  .section { padding: 58px 0; }
  .contact-section { padding: 28px; margin-bottom: 58px; }
  .faq-item summary { grid-template-columns: auto minmax(0, 1fr); align-items: start; }
  .faq-item summary em { grid-column: 2; }
  .faq-item p { padding-left: 20px; }
  .faq-item .answer-link { margin-left: 20px; }
  .source-list li { grid-template-columns: 1fr; gap: 6px; }
  .answer-meta div { grid-template-columns: 1fr; gap: 4px; }
  .consult-widget { right: 14px; bottom: 14px; }
  .consult-popup { bottom: 68px; }
}

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