/* ============================================
   云思 — 精细化业务系统定制开发
   Brochure-style Pure Static CSS
   ============================================ */

:root {
  --blue: #0969da;
  --blue-dark: #0550ae;
  --blue-light: #eef6ff;
  --blue-ultra-light: #f0f7ff;
  --ink: #1f2328;
  --ink-secondary: #4a5059;
  --ink-tertiary: #8c959f;
  --paper: #ffffff;
  --paper-warm: #fafbfc;
  --rule: #d1d9e0;
  --rule-light: #e6edf3;
  --font-serif: "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }

/* ─── Typography ─── */
.t-kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 24px;
}
.t-kicker.light { color: rgba(255,255,255,0.7); }

.t-display {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 auto 32px;
  max-width: 900px;
}
.t-display em { font-style: normal; color: var(--blue); }
.section-blue .t-display em { color: rgba(255,255,255,0.9); }

.t-headline {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 auto 24px;
  max-width: 800px;
}
.t-headline em { font-style: normal; color: var(--blue); }

.t-lead { margin: 0 auto;
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink-secondary);
  max-width: 640px;
  font-weight: 400;
}
.t-body {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-secondary);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* ─── Sections ─── */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 40px;
  position: relative;
}
.section-blue {
  background: var(--blue);
  color: #fff;
  max-width: 100%;
}
.section-blue .section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 40px;
}
.section-warm {
  background: var(--paper);
  max-width: 100%;
}
.section-warm .section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 40px;
}
.section-blue .t-lead { margin: 0 auto; color: rgba(255,255,255,0.85); }

/* ─── Grid Pattern ─── */
.grid-pattern {
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230969da' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 36px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color 150ms;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: rgba(255,255,255,0.9); }
.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 1px solid var(--rule);
}
.btn-outline:hover { border-color: var(--blue); background: var(--blue-light); }

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  z-index: 1001;
  padding: 8px 16px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  transition: top 150ms;
}
.skip-link:focus {
  top: 0;
}

/* ─── Navigation ─── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--rule-light);
  transition: box-shadow 200ms;
}
.navbar.scrolled { box-shadow: 0 1px 3px rgba(0,0,0,0.04); }
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 40px;
}
.brand {
  display: flex;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.brand-sub {
  margin-left: 8px;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
}
.nav-links { display: flex; align-items: center; gap: 40px; }
.nav-links a {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-secondary);
  letter-spacing: 0.01em;
  transition: color 150ms;
  padding-bottom: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -27px;
  left: 0; right: 0;
  height: 3px;
  background: var(--blue);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
}
.hamburger span { display: block; height: 1.5px; width: 100%; background: var(--ink); transition: all 200ms; }
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0; right: 0;
  z-index: 999;
  background: rgba(255,255,255,0.98);
  border-bottom: 1px solid var(--rule-light);
  padding: 24px 32px;
}
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 0; font-size: 15px; font-weight: 500; color: var(--ink-secondary); border-bottom: 1px solid var(--rule-light); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--blue); }

/* ─── Footer ─── */
.footer {
  background: var(--ink);
  color: var(--ink-tertiary);
  padding: 80px 40px 48px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px; }
.footer-brand-name { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.footer-brand-sub { margin-left: 8px; font-family: var(--font-sans); font-size: 10px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue); }
.footer-desc { font-size: 14px; line-height: 1.75; max-width: 320px; margin-top: 16px; color: var(--ink-tertiary); }
.footer-col-title { font-size: 12px; font-weight: 600; text-transform: uppercase; color: #fff; letter-spacing: 0.15em; margin-bottom: 24px; }
.footer-links { display: flex; flex-direction: column; gap: 14px; }
.footer-links a { font-size: 14px; color: var(--ink-tertiary); transition: color 150ms; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  max-width: 1200px; margin: 64px auto 0; padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--ink-tertiary); letter-spacing: 0.05em;
}
.footer-bottom a { color: var(--ink-tertiary); transition: color 150ms; }
.footer-bottom a:hover { color: #fff; }

/* ─── Cards ─── */
.card { background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; padding: 40px; }
.card-warm { background: var(--paper); }

/* ─── Grids ─── */
.grid-2, .grid-3, .grid-4 { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

/* ─── Pain Point ─── */
.pain-item { position: relative; padding: 28px 0 28px 32px; border-bottom: 1px solid var(--rule-light); }
.pain-item::before { content: ''; position: absolute; left: 0; top: 34px; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.pain-title { display: block; font-family: var(--font-serif); font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.5; }
.pain-desc { font-size: 15px; line-height: 1.7; color: var(--ink-tertiary); }

/* ─── Step Item ─── */
.step-item { position: relative; padding: 36px 0 36px 80px; border-bottom: 1px solid var(--rule-light); }
.step-num { position: absolute; left: 0; top: 36px; font-family: var(--font-serif); font-size: 40px; font-weight: 700; color: var(--blue); opacity: 0.1; line-height: 1; }
.step-title { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.step-desc { font-size: 15px; color: var(--ink-tertiary); line-height: 1.7; }

/* ─── Before/After ─── */
.ba-grid { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--rule); border-radius: 8px; overflow: hidden; }
.ba-cell { padding: 32px; }
.ba-cell.before { background: var(--paper); }
.ba-cell.after { background: var(--blue-light); }
.ba-label { display: flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 700; text-transform: uppercase; color: var(--blue); letter-spacing: 0.1em; margin-bottom: 10px; }
.ba-label::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); }
.ba-text { font-size: 14px; line-height: 1.7; color: var(--ink-secondary); }

/* ─── Testimonial ─── */
.testimonial-card { position: relative; padding: 40px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; }
.testimonial-quote { position: absolute; top: 24px; left: 32px; font-family: var(--font-serif); font-size: 64px; line-height: 1; color: var(--blue); opacity: 0.15; }
.testimonial-text { position: relative; z-index: 1; padding-top: 32px; font-family: var(--font-serif); font-size: 18px; line-height: 1.7; color: var(--ink); margin-bottom: 32px; }
.testimonial-author { font-size: 14px; font-weight: 600; color: var(--ink); letter-spacing: 0.02em; }
.testimonial-role { font-size: 13px; margin-top: 4px; line-height: 1.5; color: var(--ink-tertiary); }

/* ─── Insight Card ─── */
.insight-card { padding: 40px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; transition: border-color 200ms; cursor: default; }
.insight-card:hover { border-color: var(--rule); }
.insight-tag { font-size: 11px; font-weight: 500; text-transform: uppercase; padding: 6px 14px; border-radius: 4px; background: var(--blue-ultra-light); border: 1px solid var(--blue-light); color: var(--blue); letter-spacing: 0.05em; margin-bottom: 16px; display: inline-block; }
.insight-title { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--ink); line-height: 1.4; margin-bottom: 16px; }
.insight-excerpt { font-size: 14px; line-height: 1.7; color: var(--ink-secondary); margin-bottom: 24px; }
.insight-meta { font-size: 12px; font-weight: 500; color: var(--ink-tertiary); letter-spacing: 0.02em; }

/* ─── Tags ─── */
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tag { font-size: 11px; font-weight: 500; padding: 6px 14px; border-radius: 4px; background: var(--blue-ultra-light); border: 1px solid var(--blue-light); color: var(--blue); letter-spacing: 0.05em; text-transform: uppercase; }

/* ─── Value Card ─── */
.value-card { padding: 40px; }
.value-num { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: 0.2em; margin-bottom: 16px; }
.value-title { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.value-desc { font-size: 15px; line-height: 1.7; color: var(--ink-secondary); }
.value-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }

/* ─── Timeline ─── */
.timeline-item { display: flex; gap: 32px; padding-bottom: 48px; }
.timeline-label { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.timeline-year { font-size: 12px; font-weight: 700; text-transform: uppercase; padding: 8px 12px; border-radius: 4px; background: var(--blue-light); color: var(--blue); letter-spacing: 0.1em; white-space: nowrap; }
.timeline-line { width: 1px; flex: 1; min-height: 40px; background: var(--rule-light); margin-top: 12px; }
.timeline-title { font-family: var(--font-serif); font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 8px; padding-top: 4px; }
.timeline-desc { font-size: 15px; line-height: 1.7; color: var(--ink-secondary); }

/* ─── Case Block ─── */
.case-header { display: flex; align-items: center; gap: 16px; margin-bottom: 48px; }
.case-tag { font-size: 11px; font-weight: 500; text-transform: uppercase; padding: 6px 14px; border-radius: 4px; background: var(--blue-ultra-light); border: 1px solid var(--blue-light); color: var(--blue); letter-spacing: 0.05em; }
.case-num { font-family: var(--font-serif); font-size: 13px; font-weight: 700; color: var(--ink-tertiary); letter-spacing: 0.05em; }
.case-grid { display: flex; flex-direction: column; gap: 40px; align-items: stretch; }
.case-grid > * { flex: 1 1 auto; min-width: 0; }
.case-title { font-family: var(--font-serif); font-size: clamp(24px, 2.5vw, 32px); font-weight: 700; color: var(--ink); line-height: 1.2; margin-bottom: 24px; }
.case-title em { color: var(--blue); font-style: normal; }
.case-visual { border-radius: 12px; min-height: 320px; border: 1px solid var(--rule-light); overflow: hidden; }
.case-metrics { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--rule); border-radius: 8px; overflow: hidden; margin-top: 48px; }

/* ─── Metrics ─── */
.metric-num { font-family: var(--font-serif); font-size: clamp(32px, 3.5vw, 48px); font-weight: 700; line-height: 1; color: var(--ink); letter-spacing: -0.03em; }
.metric-unit { font-size: 18px; font-family: var(--font-sans); font-weight: 500; vertical-align: super; color: var(--ink-tertiary); margin-left: 4px; }
.metric-label { font-size: 11px; color: var(--ink-tertiary); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 16px; font-weight: 600; }

/* ─── QR Code ─── */
.qr-section { text-align: center; margin-top: 48px; }
.qr-label { font-size: 11px; font-weight: 600; text-transform: uppercase; color: var(--ink-tertiary); letter-spacing: 0.15em; margin-bottom: 16px; }
.qr-img { width: 160px; height: 160px; object-fit: contain; border-radius: 8px; margin: 0 auto; border: 1px solid var(--rule-light); }
.qr-note { margin-top: 12px; font-size: 13px; color: var(--ink-tertiary); }

/* ─── Detail Page Styles ─── */
.detail-hero { padding: 180px 40px 60px; }
.detail-hero + .section { padding-top: 40px; }
.detail-content { padding: 0; max-width: 1120px; margin: 0 auto; }
.detail-content h2 { font-family: var(--font-serif); font-size: clamp(28px, 3vw, 36px); font-weight: 700; color: var(--ink); margin: 64px 0 28px; letter-spacing: -0.01em; }
.detail-content h2:first-child { margin-top: 0; }
.detail-content h3 { font-family: var(--font-serif); font-size: 24px; font-weight: 700; color: var(--ink); margin: 56px 0 20px; padding-left: 16px; border-left: 3px solid var(--blue); }
.detail-content h4 { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--ink); margin: 36px 0 16px; }
.detail-content p { font-size: 17px; line-height: 1.85; color: var(--ink-secondary); margin-bottom: 20px; }
.detail-content ul { margin: 20px 0; padding-left: 24px; list-style: none; }
.detail-content ul li { position: relative; padding-left: 20px; margin-bottom: 14px; font-size: 16px; line-height: 1.75; color: var(--ink-secondary); }
.detail-content ul li::before { content: ''; position: absolute; left: 0; top: 11px; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); }

.detail-content .key-point { background: var(--blue-ultra-light); border: 1px solid var(--blue-light); border-radius: 8px; padding: 24px 28px; margin: 28px 0; }
.detail-content .key-point h4 { font-size: 16px; font-weight: 600; color: var(--blue); margin: 0 0 12px; font-family: var(--font-sans); }
.detail-content .key-point p { font-size: 16px; line-height: 1.75; margin: 0; color: var(--ink-secondary); }
.detail-content .key-point ul { margin: 12px 0 0; padding-left: 0; list-style: none; }
.detail-content .key-point ul li { font-size: 15px; margin-bottom: 8px; padding-left: 20px; }
.detail-content .key-point ul li::before { width: 4px; height: 4px; background: var(--blue); top: 10px; }

.detail-content .data-highlight { display: inline-block; background: var(--blue-ultra-light); color: var(--blue); padding: 2px 8px; border-radius: 4px; font-weight: 500; }

.detail-nav { display: flex; justify-content: space-between; align-items: center; margin: 64px auto 32px; padding: 24px 40px; background: var(--paper); border-radius: 12px; border: 1px solid var(--rule-light); max-width: 1200px; }
.detail-nav a { font-size: 15px; font-weight: 500; color: var(--blue); transition: color 150ms, background 150ms; padding: 12px 20px; border-radius: 8px; line-height: 1.5; max-width: 280px; }
.detail-nav a:hover { color: var(--blue-dark); background: rgba(44,127,211,0.06); }
.detail-nav span { flex: 1; }
.detail-nav a:first-child:only-child { margin-right: auto; }
.detail-nav a:last-child:only-child { margin-left: auto; }

/* ─── Breadcrumb ─── */
.breadcrumb { font-size: 13px; color: var(--ink-tertiary); margin-bottom: 32px; }
.breadcrumb a { color: var(--ink-tertiary); transition: color 150ms; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { color: var(--rule); margin: 0 8px; }

.breadcrumbs { font-size: 13px; color: var(--ink-tertiary); padding: 104px 40px 20px; max-width: 1200px; margin: 0 auto; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0; padding: 0; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li:not(:last-child)::after { content: ">"; color: var(--rule); font-size: 11px; }
.breadcrumbs a { color: var(--ink-tertiary); transition: color 150ms; }
.breadcrumbs a:hover { color: var(--blue); }
.breadcrumbs [aria-current="page"] { color: var(--ink); font-weight: 500; }
@media (max-width: 768px) { .breadcrumbs { padding: 96px 32px 16px; } }
@media (max-width: 640px) { .breadcrumbs { padding: 96px 24px 16px; } }

/* ─── Back to Top ─── */
.back-to-top { position: fixed; bottom: 32px; right: 32px; z-index: 998; width: 48px; height: 48px; border-radius: 50%; background: var(--ink); color: #fff; display: flex; align-items: center; justify-content: center; border: none; cursor: pointer; box-shadow: 0 4px 12px rgba(0,0,0,0.12); transition: opacity 300ms, background 200ms; opacity: 0; visibility: hidden; }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--blue); }

/* ─── Scroll Reveal (disabled to prevent content appearing blank) ─── */
.reveal { opacity: 1; transform: none; }
.reveal-delay-1, .reveal-delay-2, .reveal-delay-3, .reveal-delay-4, .reveal-delay-5 { transition-delay: 0; }

/* ─── CTA Box (centered call-to-action) ─── */
.cta-box { text-align: center; max-width: 700px; margin: 0 auto; padding: 48px 0; }
.cta-box-title { font-family: var(--font-serif); font-size: clamp(22px, 3vw, 28px); font-weight: 700; color: var(--ink); margin-bottom: 16px; line-height: 1.3; }
.cta-box-desc { font-size: 15px; line-height: 1.8; color: var(--ink); margin-bottom: 32px; }

/* ─── Related Reading / Case Cards ─── */
.related-reading {
  max-width: 720px;
  margin: 80px auto 0;
  padding: 0;
}
.related-reading-label {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 28px;
}
.related-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.related-card {
  display: block;
  padding: 28px 32px;
  background: #fff;
  border: 1px solid var(--rule-light);
  border-radius: 0;
  text-decoration: none;
  position: relative;
}
.related-card::before {
  display: none;
}
.related-card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0;
  line-height: 1.4;
}
.related-card-desc {
  font-size: 15px;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-top: 10px;
}
.related-card-cta {
  font-size: 14px;
  font-weight: 500;
  color: var(--blue);
  margin-top: 16px;
  transition: opacity 150ms;
  opacity: 0.85;
}
.related-card:hover .related-card-cta {
  opacity: 1;
}

/* ─── Checklist ─── */
.checklist-box { background: var(--paper); padding: 24px; border-radius: 8px; margin: 16px 0; }
.checklist-item { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 12px; font-size: 15px; line-height: 1.7; color: var(--ink-secondary); cursor: pointer; }
.checklist-item input[type="checkbox"] { margin-top: 3px; flex-shrink: 0; }
.checklist-item span { flex: 1; }

/* ─── Wiki CTA Box description (used standalone in cards) ─── */
.wiki-cta-box-desc { font-size: 15px; line-height: 1.7; color: var(--ink-secondary); margin-bottom: 20px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ─── Service Flow Step ─── */
.flow-step { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.flow-step-num { font-family: var(--font-serif); font-size: 32px; font-weight: 700; color: var(--blue); min-width: 48px; line-height: 1; }
.flow-step-title { font-family: var(--font-serif); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.flow-step-desc { font-size: 14px; line-height: 1.7; color: var(--ink-secondary); margin: 0; }

/* ─── Testimonial Card (compact) ─── */
.testimonial-card-compact { padding: 32px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; position: relative; }
.testimonial-card-compact .quote-mark { font-size: 48px; color: var(--blue); opacity: 0.15; line-height: 1; margin-bottom: 8px; }
.testimonial-card-compact .text { font-size: 15px; line-height: 1.7; color: var(--ink-secondary); margin-bottom: 20px; }
.testimonial-card-compact .author { font-size: 14px; font-weight: 600; color: var(--ink); }
.testimonial-card-compact .role { font-size: 13px; color: var(--ink-tertiary); margin-top: 4px; }

/* ─── FAQ Section ─── */
.faq-section { max-width: 800px; margin: 80px auto 0; }
.faq-category { margin-top: 48px; }
.faq-category:first-child { margin-top: 0; }
.faq-category-title { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--ink); margin-bottom: 24px; padding-bottom: 12px; border-bottom: 2px solid var(--ink); }
.faq-item { margin-bottom: 0; border-bottom: 1px solid var(--rule-light); }
.faq-q { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 24px 0; font-family: var(--font-serif); font-size: 18px; font-weight: 600; color: var(--ink); cursor: pointer; line-height: 1.5; background: none; border: none; text-align: left; transition: color 150ms; }
.faq-q:hover { color: var(--blue); }
.faq-q svg { flex-shrink: 0; margin-left: 16px; transition: transform 200ms; }
.faq-q[aria-expanded="true"] svg { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 300ms ease, padding 300ms ease; }
.faq-a > p { font-size: 15px; line-height: 1.85; color: var(--ink-secondary); padding-bottom: 24px; margin: 0; max-width: 640px; }
.faq-q[aria-expanded="true"] + .faq-a { max-height: 500px; }
@media (max-width: 768px) {
  .faq-section { max-width: 100%; margin: 48px auto 0; padding: 0 24px; }
  .faq-category { margin-bottom: 40px; }
  .faq-category-title { font-size: 18px; margin-bottom: 20px; }
  .faq-q { font-size: 18px; }
  .faq-a { font-size: 15px; }
}

/* ─── Compare Table ─── */
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare-table thead tr { border-bottom: 2px solid var(--ink); }
.compare-table th { text-align: center; padding: 12px; font-family: var(--font-serif); font-weight: 700; }
.compare-table th:first-child { text-align: left; }
.compare-table td { padding: 12px; text-align: center; border-bottom: 1px solid var(--rule); }
.compare-table td:first-child { text-align: left; font-weight: 600; }
.compare-table .star-rating { font-family: var(--font-serif); font-weight: 700; }
.compare-table .rating-note { font-size: 12px; color: var(--ink-tertiary); }

/* ═══════════════ RESPONSIVE ≥769px ═══════════════ */
@media (min-width: 769px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .ba-grid { grid-template-columns: 1fr 1fr; }
  .case-grid { flex-direction: row; gap: 80px; align-items: flex-start; }
  .case-grid > * { flex: 1 1 50%; }
  .case-grid-reverse { flex-direction: row-reverse; }
  .case-metrics { grid-template-columns: repeat(3, 1fr); }
  .navbar-inner { height: 72px; padding: 0 40px; }
  .hamburger { display: none !important; }
}

/* ═══════════════ RESPONSIVE ≤768px ═══════════════ */
@media (max-width: 768px) {
  .section, .section-blue .section-inner, .section-warm .section-inner { padding: 80px 32px; }
  .navbar-inner { height: 64px; padding: 0 32px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .footer { padding: 80px 32px 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .t-display { font-size: clamp(32px, 8vw, 48px); }
  .t-headline { font-size: clamp(22px, 6vw, 32px); }
  .back-to-top { bottom: 24px; right: 24px; width: 44px; height: 44px; }
  .detail-hero { padding: 140px 32px 80px; }
  .brand { font-size: 20px; }
  .detail-nav { padding: 20px 32px; }
}

/* ─── Card Cell (inside blue section) ─── */
.section-blue .card-cell { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; text-align: center; }
.section-blue .card-cell-label { font-size: 11px; font-weight: 600; text-transform: uppercase; color: rgba(255,255,255,0.6); letter-spacing: 0.15em; margin-bottom: 8px; }
.section-blue .card-cell a { font-family: var(--font-serif); font-size: 16px; font-weight: 600; color: #fff; letter-spacing: 0.02em; }
.section-blue .card-cell a:hover { color: rgba(255,255,255,0.85); }

/* ─── Card Title (inside grid cards) ─── */
.card-title { font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.card-title-sm { font-family: var(--font-serif); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }

/* ─── Metric Value (big numbers in cards) ─── */
.metric-value { font-family: var(--font-serif); font-size: 24px; font-weight: 700; color: var(--ink); }
.metric-value-note { font-size: 14px; color: var(--ink-tertiary); margin-left: 4px; }

/* ─── Hero Case Title (index.html blue section) ─── */
.hero-case-title { font-family: var(--font-serif); font-size: 16px; font-weight: 600; color: #fff; line-height: 1.4; }

/* ─── Value Number (about page) ─── */
.value-number { font-family: var(--font-serif); font-size: 32px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }

/* ═══════════════════════════════════════════
   SUPPLEMENTARY CONTENT COMPONENTS
   真实场景 / 深层分析 / 判断标准 etc.
   ═══════════════════════════════════════════ */

/* ─── Story Card (真实场景) ─── */
.story-card { position: relative; padding: 40px 40px 40px 32px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; margin: 32px 0; }
.story-card::before { content: ""; position: absolute; left: 0; top: 24px; bottom: 24px; width: 3px; background: var(--blue); border-radius: 2px; }
.story-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.story-card-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }
.story-card-label { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue); }
.story-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.story-card-body p { margin-bottom: 12px; }
.story-card-body p:last-child { margin-bottom: 0; }

/* ─── Analysis Card (深层分析) ─── */
.analysis-card { padding: 36px 40px; background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; margin: 32px 0; }
.analysis-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--rule-light); }
.analysis-card-icon { width: 32px; height: 32px; border-radius: 6px; background: var(--blue-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.analysis-card-label { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-tertiary); }
.analysis-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.analysis-card-body p { margin-bottom: 12px; }
.analysis-card-body p:last-child { margin-bottom: 0; }

/* ─── Criteria Card (判断标准 / 适合什么企业) ─── */
.criteria-card { padding: 32px 40px; background: var(--paper); border-left: 3px solid var(--blue); border-radius: 0 8px 8px 0; margin: 32px 0; }
.criteria-card-header { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue); margin-bottom: 20px; }
.criteria-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.criteria-card-body p { margin-bottom: 12px; }
.criteria-card-body p:last-child { margin-bottom: 0; }

/* ─── Warning Card (反面案例 / 警示) ─── */
.warning-card { position: relative; padding: 36px 40px 36px 36px; background: #fff9f5; border: 1px solid #f0d9c3; border-radius: 8px; margin: 32px 0; }
.warning-card::before { content: ""; position: absolute; left: 0; top: 20px; bottom: 20px; width: 3px; background: #d4a574; border-radius: 2px; }
.warning-card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.warning-card-label { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: #b08d5f; }
.warning-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.warning-card-body p { margin-bottom: 12px; }
.warning-card-body p:last-child { margin-bottom: 0; }

/* ─── Testimonial Inline (客户证言) ─── */
.testimonial-inline { padding: 32px 40px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; margin: 32px 0; position: relative; }
.testimonial-inline::before { content: "\""; position: absolute; top: 16px; left: 24px; font-family: var(--font-serif); font-size: 64px; color: var(--blue); opacity: 0.12; line-height: 1; }
.testimonial-inline-text { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); padding-left: 32px; margin-bottom: 16px; position: relative; z-index: 1; }
.testimonial-inline-source { padding-left: 32px; border-top: 1px solid var(--rule-light); padding-top: 16px; margin-top: 16px; }
.testimonial-inline-author { font-size: 14px; font-weight: 600; color: var(--ink); }
.testimonial-inline-role { font-size: 13px; color: var(--ink-tertiary); }

/* ─── Path Card (实施路径) ─── */
.path-card { margin: 32px 0; padding: 36px 40px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; }
.path-card-header { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-tertiary); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.path-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.path-card-body p { margin-bottom: 12px; }
.path-card-body p:last-child { margin-bottom: 0; }

/* ─── Q&A Card (常见问题) ─── */
.qa-card { margin: 24px 0; padding: 28px 36px; background: var(--paper); border: 1px solid var(--rule-light); border-radius: 8px; }
.qa-card-q { font-family: var(--font-serif); font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.qa-card-a { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }

/* ─── Practice Card (最佳实践 / checklist) ─── */
.practice-card { padding: 32px 40px; background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; margin: 32px 0; }
.practice-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.practice-card-num { font-family: var(--font-serif); font-size: 13px; font-weight: 700; color: var(--blue); width: 28px; height: 28px; border-radius: 50%; background: var(--blue-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.practice-card-label { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-tertiary); }
.practice-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.practice-card-body p { margin-bottom: 12px; }
.practice-card-body p:last-child { margin-bottom: 0; }

/* ─── Data Card (成本对比 / 数据) ─── */
.data-card { padding: 36px 40px; background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; margin: 32px 0; }
.data-card-header { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-tertiary); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.data-card-body { font-size: 15px; line-height: 1.8; color: var(--ink-secondary); }
.data-card-body p { margin-bottom: 12px; }
.data-card-body p:last-child { margin-bottom: 0; }

/* ─── Mobile: supplementary cards ─── */
@media (max-width: 768px) {
  .story-card, .analysis-card, .criteria-card, .warning-card, .testimonial-inline, .path-card, .qa-card, .practice-card, .data-card { padding: 24px 20px; margin: 24px 0; }
  .story-card::before { top: 16px; bottom: 16px; }
  .testimonial-inline::before { font-size: 48px; top: 12px; left: 16px; }
  .testimonial-inline-text, .testimonial-inline-source { padding-left: 20px; }
}

/* ═══════════════════════════════════════════
   NEWSLETTER SUBSCRIBE
   邮件订阅表单 — 洞察文章底部
   ═══════════════════════════════════════════ */
.newsletter-subscribe {
  max-width: 700px;
  margin: 48px auto 0;
  padding: 32px 36px;
  background: var(--paper);
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
}
.newsletter-subscribe-label {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.newsletter-subscribe-desc {
  font-size: 14px;
  color: var(--ink-tertiary);
  margin-bottom: 20px;
  line-height: 1.6;
}
.newsletter-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.newsletter-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  outline: none;
  transition: border-color 200ms;
}
.newsletter-form input[type="email"]:focus {
  border-color: var(--blue);
}
.newsletter-form input[type="email"]::placeholder {
  color: var(--ink-tertiary);
}
.newsletter-form button {
  padding: 12px 24px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 200ms;
  white-space: nowrap;
}
.newsletter-form button:hover {
  background: var(--blue-dark);
}
.newsletter-privacy {
  font-size: 12px;
  color: var(--ink-tertiary);
  margin-top: 12px;
}
@media (max-width: 768px) {
  .newsletter-subscribe {
    padding: 24px 20px;
    margin: 32px auto 0;
  }
  .newsletter-form {
    flex-direction: column;
  }
  .newsletter-form input[type="email"] {
    min-width: auto;
  }
}

/* ═══════════════════════════════════════════
   SUPPLEMENTARY BLOCK
   轻量补充内容区域 — 真实场景 / 深层分析等
   ═══════════════════════════════════════════ */
/* supplementary-block with spacing harmony */
.supplementary-block {
  position: relative;
  padding: 36px 40px;
  margin: 36px 0;
  background: var(--paper);
  border-left: 3px solid var(--blue);
  border-radius: 0 8px 8px 0;
}
.detail-content > p + .supplementary-block { margin-top: 32px; }
.detail-content > .supplementary-block + p { margin-top: 32px; }
.supplementary-block h3 {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}
.supplementary-block p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-secondary);
  margin-bottom: 14px;
}
.supplementary-block ul {
  margin: 18px 0;
  padding-left: 24px;
  list-style: none;
}
.supplementary-block ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-secondary);
}
.supplementary-block ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
}
.supplementary-block p:last-child,
.supplementary-block ul:last-child {
  margin-bottom: 0;
}
@media (max-width: 768px) {
  .supplementary-block {
    padding: 28px 24px;
    margin: 28px 0;
  }
  .supplementary-block h3 {
    font-size: 20px;
  }
}

/* ─── Philosophy Card Title ─── */
.philosophy-card-title { font-family: var(--font-serif); font-size: 28px; font-weight: 700; color: var(--ink); line-height: 1; }

/* ============================================================
   CONTENT PAGES — UNIFIED TYPOGRAPHY SYSTEM
   ============================================================ */

.detail-content {
  padding: 0;
}

/* h3 — blue left border accent */
.detail-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin: 48px 0 16px;
  padding-left: 16px;
  border-left: 3px solid var(--blue);
  line-height: 1.3;
}

/* h4 — used inside key-point cards */
.detail-content h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}

/* paragraphs */
.detail-content p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-secondary);
  margin: 0 0 16px;
}

/* lists */
.detail-content ul,
.detail-content ol {
  margin: 0 0 20px;
  padding-left: 24px;
}

.detail-content li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-secondary);
  margin-bottom: 8px;
}

/* strong emphasis */
.detail-content strong {
  color: var(--ink);
  font-weight: 600;
}

/* Key Point Card — blue tinted */
.detail-content .key-point {
  background: var(--blue-ultra-light);
  border: 1px solid var(--blue-light);
  border-radius: 10px;
  padding: 24px 28px;
  margin: 28px 0;
}

.detail-content .key-point p:last-child {
  margin-bottom: 0;
}

/* Long-tail Keywords at bottom of content */

/* Responsive */
@media (max-width: 768px) {
  .detail-content { padding: 0; max-width: 1120px; margin: 0 auto; }
  .detail-content h3 {
    font-size: 19px;
    margin: 36px 0 12px;
  }
  
  .detail-content p {
    font-size: 15px;
    line-height: 1.8;
  }
  
  .detail-content .key-point {
    padding: 18px 20px;
  }
}

/* ─── Long-tail Keywords ─── */

@media (max-width: 768px) {
}

/* ============================================================
   LONG-TAIL KEYWORDS — unified style
   ============================================================ */

.long-tail-keywords {
  max-width: 1120px;
  margin: 56px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--rule-light);
}

.long-tail-keywords .label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.long-tail-keywords .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.long-tail-keywords .tag-item {
  font-size: 11px;
  font-weight: 500;
  color: var(--blue);
  background: var(--blue-ultra-light);
  padding: 6px 14px;
  border-radius: 4px;
  border: 1px solid var(--blue-light);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: all 0.2s ease;
  cursor: pointer;
}

.long-tail-keywords .tag-item:hover {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

@media (max-width: 768px) {
  .long-tail-keywords .tags { gap: 6px; }
  .long-tail-keywords .tag-item { font-size: 10px; padding: 5px 10px; }
}

/* Hero case cards (index.html) */
.hero-case-card {
  padding: 24px 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  text-align: left;
  display: block;
  transition: background 200ms;
}
.hero-case-card:hover {
  background: rgba(255,255,255,0.14);
}

/* ─── Utility classes to reduce inline styles ─── */
.block { display: block; }
.text-center { text-align: center; }
.font-serif { font-family: var(--font-serif); }
.font-normal { font-style: normal; }
.text-secondary { color: var(--ink-secondary); }
.text-tertiary { color: var(--ink-tertiary); }

.mt-4 { margin-top: 4px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.mt-56 { margin-top: 56px; }
.mt-64 { margin-top: 64px; }

.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-40 { margin-bottom: 40px; }
.mb-64 { margin-bottom: 64px; }

.mx-auto { margin-left: auto; margin-right: auto; }

.max-w-500 { max-width: 500px; }
.max-w-560 { max-width: 560px; }
.max-w-600 { max-width: 600px; }
.max-w-640 { max-width: 640px; }
.max-w-700 { max-width: 700px; }
.max-w-720 { max-width: 720px; }
.max-w-800 { max-width: 800px; }

/* Ensure utility max-width wins inside .section-blue/.section-warm .section-inner */
:is(.section, .section-blue, .section-warm) .section-inner.max-w-500 { max-width: 500px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-560 { max-width: 560px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-600 { max-width: 600px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-640 { max-width: 640px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-700 { max-width: 700px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-720 { max-width: 720px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-800 { max-width: 800px; }
:is(.section, .section-blue, .section-warm) .section-inner.max-w-900 { max-width: 900px; }

.py-48 { padding-top: 48px; padding-bottom: 48px; }
.px-40 { padding-left: 40px; padding-right: 40px; }

.h1-size {
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.h1-serif {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.h1-serif.light { color: #fff; }
.h2-serif {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.text-body-lg {
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink-secondary);
}
.text-body-sm {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-secondary);
}
.text-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.text-label.mb-24 { margin-bottom: 24px; }
.card-heading {
  padding-left: 16px;
  border-left: 3px solid var(--blue);
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 16px;
}
.back-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 16px;
  display: inline-block;
}
.flex-col { display: flex; flex-direction: column; }
.gap-24 { gap: 24px; }
.flex-wrap-center {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.gap-12 { gap: 12px; }
.flex-gap-8 { display: flex; gap: 8px; }
.flex-gap-8.wrap { flex-wrap: wrap; }
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.placeholder-box {
  border-radius: 12px;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--rule-light);
}
.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}
.unit-suffix {
  font-size: 18px;
  font-family: var(--font-sans);
  font-weight: 500;
  vertical-align: super;
  color: var(--ink-tertiary);
  margin-left: 4px;
}
.text-caption {
  font-size: 14px;
  color: var(--ink-tertiary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Third batch utility classes */
.light-em { font-style: normal; color: rgba(255,255,255,0.9); }
.hero-lead {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin: 0 auto 40px;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 700px;
  margin: 0 auto 32px;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}
.stat-card {
  padding: 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  text-align: center;
}
.stat-label {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.inline-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
}
.text-light-muted { color: rgba(255,255,255,0.6); }
.text-light-faint { color: rgba(255,255,255,0.5); }
.testimonial-box {
  max-width: 700px;
  margin: 0 auto;
  padding: 40px;
  background: var(--paper-warm);
  border-radius: 12px;
  text-align: center;
}
.tag-pill {
  font-size: 14px;
  color: var(--ink-secondary);
  text-decoration: none;
  padding: 8px 16px;
  background: var(--paper-warm);
  border-radius: 4px;
  transition: color 0.2s;
}
.text-lg-secondary {
  font-size: 18px;
  color: var(--ink-secondary);
}
.flex { display: flex; }
.gap-24 { gap: 24px; }
.serif-subheading {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}
.meta-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: 6px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}

/* Fourth batch utility classes */
.mt-3 { margin-top: 3px; }
.contact-grid {
  max-width: 700px;
  margin: 0 auto 48px;
  background: transparent;
  border: none;
  gap: 1px;
}
.qr-img { border: none; background: #fff; padding: 8px; }
.footer-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  margin-right: 24px;
}
.footer-link-sm {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  margin-right: 20px;
}
.footer-link-indented {
  display: inline-block;
  margin-left: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
}
.stat-label-sm {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.p-24 { padding: 24px; }
.unit-suffix-sm {
  font-size: 14px;
  color: var(--ink-tertiary);
  margin-left: 4px;
}
.text-xs-tertiary {
  font-size: 13px;
  color: var(--ink-tertiary);
}
.text-xs-tertiary.mt-4 { margin-top: 4px; }
.text-xs-blue {
  color: var(--blue);
  font-size: 13px;
}
.text-xs-blue.ml-8 { margin-left: 8px; }
.card-bordered {
  padding: 32px;
  background: var(--paper);
  border: 1px solid var(--rule-light);
  border-radius: 8px;
}
.text-label-blue {
  font-size: 11px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.text-label-blue.mb-12 { margin-bottom: 12px; }
.card-title-md {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}
.text-body-md {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-secondary);
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--rule-light);
  border-radius: 8px;
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
}
.stat-number {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.stat-unit {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
  letter-spacing: 0.1em;
}
.pt-180 { padding-top: 180px; }
.mb-48 { margin-bottom: 48px; }
.stat-card-alt {
  padding: 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  text-align: center;
}
.stat-label-faint {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.hero-display {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 16px 0 20px;
}
.inline-block { display: inline-block; }
.section-padding-lg { padding: 80px 40px; }
.search-hero { padding-top: 160px; }
@media (max-width: 768px) { .search-hero { padding-top: 120px; } }

/* Fifth batch utility classes */
.mb-64 { margin-bottom: 64px; }
.gap-16 { gap: 16px; }
.grid-transparent {
  background: transparent;
  border: none;
}
.text-white { color: #fff; }
.gap-24 { gap: 24px; }
.h-100 { height: 100%; }

/* ─── Form components ─── */
.form-card {
  background: #fff;
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--rule-light);
  text-align: left;
  margin-top: 24px;
}
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--rule-light);
  border-radius: 8px;
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
  resize: vertical;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-input:focus,
.form-textarea:focus,
.form-input:active,
.form-textarea:active { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-light); }
.btn-block { width: 100%; padding: 14px; font-size: 16px; font-weight: 600; margin-top: 8px; }
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
}
.form-status {
  font-size: 12px;
  color: var(--ink-tertiary);
  text-align: center;
  margin-top: 12px;
}
.form-success {
  display: none;
  margin-top: 16px;
  padding: 16px;
  background: var(--blue-light);
  border: 1px solid var(--blue-light);
  border-radius: 8px;
  text-align: center;
}
.form-success.is-visible { display: block; }
.form-status.is-hidden { display: none; }
.form-success-title {
  font-size: 15px;
  color: var(--blue);
  font-weight: 600;
  margin: 0;
}
.form-success-text {
  font-size: 13px;
  color: var(--ink-secondary);
  margin: 8px 0 0;
}
.form-fallback {
  display: none;
  margin-top: 16px;
  padding: 16px;
  background: #fff9f5;
  border: 1px solid #f0d9c3;
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
  color: var(--ink-secondary);
}
.form-fallback.is-visible { display: block; }
.form-fallback a {
  color: var(--blue);
  font-weight: 500;
}
.form-input-error {
  border-color: #cf222e;
  background: #fff5f5;
}
.form-input-error:focus {
  border-color: #cf222e;
}
.field-error {
  display: none;
  margin-top: 6px;
  font-size: 13px;
  color: #cf222e;
  text-align: left;
}
.field-error.is-visible {
  display: block;
}
.form-error {
  display: none;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: #fff5f5;
  border: 1px solid #ffdce0;
  border-radius: 8px;
  color: #cf222e;
  font-size: 14px;
  text-align: left;
}
.form-error.is-visible {
  display: block;
}

/* ─── Search page extras ─── */
.section-compact .section-inner { padding-top: 48px; padding-bottom: 48px; }
.search-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.search-chip {
  padding: 10px 18px;
  border: 1px solid var(--rule-light);
  border-radius: 999px;
  background: #fff;
  color: var(--ink-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 200ms, color 200ms, background 200ms;
}
.search-chip:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
}
.search-category {
  display: block;
  padding: 28px;
  text-decoration: none;
  transition: transform 200ms, box-shadow 200ms;
}
.search-category:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.search-category h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--ink);
}
.search-category p {
  color: var(--ink-secondary);
  font-size: 14px;
  line-height: 1.7;
}
.search-list {
  list-style: none;
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  gap: 40px;
}
.search-list li {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.search-list li a {
  color: var(--blue);
  font-weight: 500;
  font-size: 15px;
  line-height: 1.5;
}
.search-list li a:hover {
  color: var(--blue-dark);
}
.search-list li p {
  color: var(--ink-tertiary);
  font-size: 13px;
  margin-top: 12px;
  line-height: 1.6;
}

/* ─── Pagefind UI overrides ─── */
#search {
  --pagefind-ui-font: var(--font-sans);
  --pagefind-ui-text: var(--ink);
  --pagefind-ui-primary: var(--blue);
  --pagefind-ui-border: var(--rule-light);
  --pagefind-ui-border-radius: 8px;
}
#search .pagefind-ui__search-input,
#search .pagefind-ui__search-clear,
#search .pagefind-ui__result-title,
#search .pagefind-ui__result-excerpt,
#search .pagefind-ui__result-link,
#search .pagefind-ui__message,
#search .pagefind-ui__button {
  font-family: var(--font-sans);
}
#search .pagefind-ui__search-input {
  border-color: var(--rule-light);
  border-radius: 8px;
  font-size: 15px;
}
#search .pagefind-ui__result {
  border-color: var(--rule-light);
  padding: 24px 0;
}
#search .pagefind-ui__result-title {
  font-size: 18px;
  font-weight: 600;
}
#search .pagefind-ui__result-title .pagefind-ui__result-link {
  color: var(--blue);
  text-decoration: none;
}
#search .pagefind-ui__result-title .pagefind-ui__result-link:hover {
  color: var(--blue-dark);
}
#search .pagefind-ui__result-excerpt {
  font-size: 15px;
  color: var(--ink-secondary);
  line-height: 1.7;
  margin-top: 8px;
}
#search .pagefind-ui__result-thumb {
  display: none;
}

/* ─── Mobile menu close button ─── */
.mobile-menu-close {
  position: absolute;
  top: 16px;
  right: 24px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  font-size: 24px;
  line-height: 1;
  color: var(--ink-secondary);
}
.mobile-menu-close:hover { color: var(--ink); }
.mobile-menu { position: relative; }

/* ─── Footer note ─── */
.footer-note {
  display: block;
  font-size: 14px;
  color: var(--ink-tertiary);
  margin-top: 8px;
}


/* ─── Contact page helpers ─── */
.hero-lead-light {
  font-size: 20px;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  margin-bottom: 20px;
}
.hero-body-light {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
}
.hero-hint-light {
  margin-top: 16px;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
}
.flex-center-wrap {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.gap-32 { gap: 32px; }
.qr-card {
  display: inline-block;
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
}
.qr-img-lg {
  width: 200px;
  height: 200px;
  display: block;
  margin: 0 auto;
  border-radius: 4px;
}


/* ─── Homepage helpers ─── */
.hero-full {
  min-height: calc(100vh + 80px);
  padding-top: 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-full .t-display { color: #fff; }
.hero-full .t-lead { color: rgba(255,255,255,0.85); }
.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-cases-grid {
  max-width: 900px;
  margin: 0 auto 48px;
  background: transparent;
  border: none;
}
.gap-48 { gap: 48px; }
.max-w-900 { max-width: 900px; }


/* ─── Remaining inline-style replacements ─── */
.placeholder-label {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-tertiary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.timeline-item.no-padding { padding-bottom: 0; }
.step-timeline {
  max-width: 900px;
  margin-top: 64px;
  border-top: 1px solid var(--rule);
}
.step-item:last-child { border-bottom: none; }
.link-arrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  margin-top: 24px;
}
.hero-team { padding: 140px 40px 80px; }
.detail-content.max-w-800 { max-width: 800px; margin: 0 auto; }
.t-lead.mx-auto-640 { max-width: 640px; margin-left: auto; margin-right: auto; }
.table-wrapper { overflow-x: auto; margin: 24px 0; }
.text-link-blue { color: var(--blue); }
.faq-subtitle {
  font-size: 17px;
  color: var(--ink-secondary);
  max-width: 560px;
  margin: 0;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.tag-cloud-left {
  justify-content: flex-start;
}
.page-404 { padding: 160px 40px 80px; text-align: center; }
.page-404-text {
  font-size: 17px;
  color: var(--ink-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
}



/* ─── Software grid on insights page ─── */
.software-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.software-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 12px;
  background: var(--paper);
  border: 1px solid var(--rule-light);
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-secondary);
}
.software-card:hover {
  color: var(--blue);
  border-color: var(--rule);
}
@media (max-width: 1024px) {
  .software-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .software-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .software-card { padding: 12px 10px; font-size: 13px; }
}


/* ─── Pagination ─── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--rule-light);
}
.pagination-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  background: var(--paper);
  border: 1px solid var(--rule-light);
  transition: border-color 200ms, background-color 200ms;
}
.pagination-link:hover {
  border-color: var(--blue);
  background: var(--blue-light);
}
.pagination-link.disabled {
  color: var(--ink-tertiary);
  background: var(--paper-warm);
  border-color: var(--rule-light);
  cursor: not-allowed;
}
.pagination-info {
  font-size: 14px;
  color: var(--ink-secondary);
  font-weight: 500;
}