/* ==========================================================================
   尊龙凯时官网 - 全站样式
   Customer Intelligence Studio + Retail Pricing Command Center + Marketing Decision Lab
   纯原创 CSS，无远程字体/框架依赖
   ========================================================================== */

:root {
  --bg: #f5f6fa;
  --bg-panel: #ffffff;
  --bg-soft: #eef0f7;
  --bg-dark: #14161f;
  --bg-dark-2: #1c1f2e;
  --bg-dark-3: #232739;
  --border: #e1e4ee;
  --border-dark: #2c2f42;
  --text: #1b1d29;
  --text-muted: #5a5f74;
  --text-dim: #888ea3;
  --text-on-dark: #eef0f8;
  --text-on-dark-muted: #a5aac0;
  --blue-purple: #5457e5;
  --blue-purple-light: #8486ef;
  --cyan: #12aebb;
  --cyan-light: #4fd4df;
  --cyan-deep: #0c6b78;
  --orange: #e78a3c;
  --risk: #e0522f;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --maxw: 1180px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-purple); text-decoration: none; }
a:hover { color: var(--cyan-deep); text-decoration: underline; }

h1, h2, h3, h4 {
  color: var(--text);
  line-height: 1.35;
  font-weight: 800;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); }
h2 { font-size: clamp(1.3rem, 1.05rem + 1.05vw, 1.8rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1.1em; color: var(--text-muted); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text) !important;
  text-decoration: none !important;
  flex-shrink: 0;
}
.brand-text { font-weight: 800; font-size: 1.12rem; letter-spacing: 0.3px; color: var(--text); }
.main-nav { display: flex; align-items: center; }
.nav-toggle {
  display: none;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.95rem;
  cursor: pointer;
}
.nav-list { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; margin: 0; padding: 0; }
.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.92rem;
  white-space: nowrap;
}
.nav-list a:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.nav-list a.active, .nav-list a[aria-current="page"] {
  background: linear-gradient(135deg, var(--blue-purple), var(--cyan));
  color: #fff;
  font-weight: 700;
}
@media (max-width: 960px) {
  .nav-toggle { display: inline-block; }
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    padding: 10px 20px 16px;
    gap: 2px;
  }
  .main-nav { position: relative; }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 12px 8px; }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--text-dim); margin: 18px 0 6px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb span.sep { margin: 0 6px; color: var(--text-dim); }
.breadcrumb span.current { color: var(--text-muted); }

/* ---------- Page hero (secondary pages) ---------- */
.page-hero { padding: 18px 0 10px; border-bottom: 1px solid var(--border); margin-bottom: 30px; }
.kicker {
  display: inline-block;
  color: var(--cyan-deep);
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 700;
}
.page-lede { color: var(--text-muted); font-size: 1.05rem; max-width: 46em; }

/* ---------- Hero (index, dark panel) ---------- */
.hero {
  padding: 50px 0 34px;
  background:
    radial-gradient(ellipse at top right, rgba(84, 87, 229, 0.35), transparent 60%),
    radial-gradient(ellipse at bottom left, rgba(18, 174, 187, 0.28), transparent 55%),
    var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
  color: var(--text-on-dark);
}
.hero h1, .hero .kicker { color: var(--text-on-dark); }
.hero .kicker { color: var(--cyan-light); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.hero-sub { font-size: 1.06rem; color: var(--text-on-dark-muted); max-width: 44em; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
.hero-tags span {
  font-size: 0.82rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-dark);
  color: var(--text-on-dark-muted);
  padding: 5px 11px;
  border-radius: 999px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue-purple), var(--cyan));
  color: #fff !important;
  font-weight: 700;
  text-decoration: none !important;
  border: none;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn-outline {
  display: inline-block;
  padding: 11px 21px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit !important;
  border: 1px solid var(--border-dark);
  text-decoration: none !important;
}
.hero .btn-outline, .cta-banner.dark .btn-outline { color: var(--text-on-dark) !important; }
.btn-outline:not(.hero *):not(.dark *) { border-color: var(--border); color: var(--text) !important; }

/* ---------- Section blocks ---------- */
.section-block { padding: 46px 0; border-bottom: 1px solid var(--border); }
.section-alt { background: var(--bg-soft); }
.section-dark { background: var(--bg-dark); color: var(--text-on-dark); border-bottom: 1px solid var(--border-dark); }
.section-dark h2, .section-dark h3 { color: var(--text-on-dark); }
.section-dark p { color: var(--text-on-dark-muted); }
.section-head { max-width: 52em; margin-bottom: 26px; }
.section-head p { color: var(--text-muted); }
.section-dark .section-head p { color: var(--text-on-dark-muted); }

/* ---------- Long-form articles ---------- */
.content-article { margin: 0 0 42px; padding-bottom: 38px; border-bottom: 1px dashed var(--border); }
.content-article:last-child { border-bottom: none; }
.content-article h2 { max-width: 32em; }
.article-index { display: inline-block; color: var(--cyan-deep); font-size: 0.82rem; letter-spacing: 1px; margin-bottom: 8px; font-weight: 700; }
.article-meta { display: block; color: var(--text-dim); font-size: 0.82rem; margin-bottom: 6px; }

.callout {
  border-left: 3px solid var(--orange);
  background: rgba(231, 138, 60, 0.08);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 18px 0;
  font-size: 1.02rem;
}
.callout.purple { border-left-color: var(--blue-purple); background: rgba(84, 87, 229, 0.07); }
.callout.cyan { border-left-color: var(--cyan); background: rgba(18, 174, 187, 0.08); }
.callout.risk { border-left-color: var(--risk); background: rgba(224, 82, 47, 0.08); }

.diagram-figure {
  margin: 22px 0;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.diagram-figure img { border-radius: var(--radius-sm); }
.diagram-figure figcaption { margin-top: 10px; font-size: 0.86rem; color: var(--text-dim); text-align: center; }

/* ---------- Further reading (per-article related links) ---------- */
.further-reading { margin: 24px 0 0; padding-top: 16px; border-top: 1px solid var(--border); }
.further-reading .fr-title {
  font-size: 0.78rem; letter-spacing: 1px; text-transform: uppercase; font-weight: 800;
  color: var(--text-dim); margin-bottom: 10px;
}
.further-reading ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.further-reading li { font-size: 0.93rem; color: var(--text-muted); }
.further-reading .fr-arrow { color: var(--cyan-deep); margin-right: 7px; }
.further-reading li a { color: var(--text); font-weight: 600; }
.further-reading li a:hover { color: var(--cyan-deep); }
.further-reading .fr-tag {
  color: var(--text-dim); font-size: 0.78rem; margin-left: 7px; white-space: nowrap;
}

/* ---------- Card grid (summaries) ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.summary-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.summary-card:hover { border-color: var(--blue-purple-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(20,22,31,0.08); }
.summary-card h3 { font-size: 1.02rem; margin-bottom: 8px; }
.summary-card h3 a { color: var(--text); }
.summary-card h3 a:hover { color: var(--cyan-deep); text-decoration: none; }
.summary-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }
.summary-card .card-more { display: inline-block; margin-top: 10px; font-size: 0.85rem; color: var(--cyan-deep); }

/* ---------- Feature / capability grid ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.feature-card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; }
.feature-card .f-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-purple), var(--cyan));
  color: #fff; font-weight: 800; font-size: 0.85rem; margin-bottom: 10px;
}
.feature-card h3 { font-size: 1rem; margin-bottom: 6px; }
.feature-card p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0; }

/* ---------- Trend grid (2026) ---------- */
.trend-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 16px; }
.trend-card { background: var(--bg-dark-2); border: 1px solid var(--border-dark); border-radius: var(--radius-md); padding: 18px; }
.trend-card .trend-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 999px;
  background: var(--bg-dark-3); color: var(--cyan-light); font-weight: 800; font-size: 0.8rem; margin-bottom: 10px;
}
.trend-card .trend-shift {
  font-weight: 700; color: var(--text-on-dark); font-size: 0.98rem; margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.trend-card .trend-shift .arrow { color: var(--cyan-light); }
.trend-card p { color: var(--text-on-dark-muted); font-size: 0.88rem; margin-bottom: 0; }

/* ---------- Observation notes ---------- */
.note-block { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 22px 24px; margin-bottom: 18px; }
.note-block h3 { font-size: 1.05rem; }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 18px; }
.faq-item summary {
  cursor: pointer; padding: 14px 0; font-weight: 700; color: var(--text);
  list-style: none; position: relative; padding-right: 26px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 12px; color: var(--cyan-deep); font-size: 1.2rem; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { color: var(--text-muted); padding-bottom: 14px; margin: 0; }

/* ---------- Company / disclaimer ---------- */
.disclaimer-section { font-size: 0.86rem; }
.disclaimer-section .box { border: 1px dashed var(--border); border-radius: var(--radius-md); padding: 16px 18px; color: var(--text-dim); background: var(--bg-panel); }

/* ---------- CTA banner ---------- */
.cta-banner {
  padding: 40px 0; text-align: center;
  background: linear-gradient(135deg, rgba(84,87,229,0.08), rgba(18,174,187,0.08));
  border-bottom: 1px solid var(--border);
}
.cta-banner.dark { background: var(--bg-dark); color: var(--text-on-dark); border-bottom: 1px solid var(--border-dark); }
.cta-banner.dark h2 { color: var(--text-on-dark); }
.cta-banner.dark p { color: var(--text-on-dark-muted); }
.cta-banner h2 { margin-bottom: 10px; }
.cta-banner p { color: var(--text-muted); margin-bottom: 20px; }

/* ---------- Flow / list helpers ---------- */
.flow-steps {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin: 16px 0; padding: 14px;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-md);
  font-size: 0.9rem; color: var(--text-muted);
}
.flow-steps .step { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; color: var(--text); }
.flow-steps .arrow { color: var(--cyan-deep); }
.flow-steps.on-dark { background: var(--bg-dark-2); border-color: var(--border-dark); }
.flow-steps.on-dark .step { background: var(--bg-dark-3); border-color: var(--border-dark); color: var(--text-on-dark); }
.flow-steps.on-dark .arrow { color: var(--cyan-light); }

/* ---------- Tables ---------- */
.data-table-wrap { overflow-x: auto; margin: 18px 0; }
table.data-table { border-collapse: collapse; width: 100%; min-width: 480px; font-size: 0.92rem; }
table.data-table th, table.data-table td { border: 1px solid var(--border); padding: 9px 12px; text-align: left; }
table.data-table th { background: var(--bg-soft); color: var(--text); }
table.data-table td { color: var(--text-muted); }
.table-note { font-size: 0.82rem; color: var(--text-dim); margin-top: -6px; }

/* ---------- Segment / persona rows ---------- */
.persona-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin: 16px 0; }
.persona-chip { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 0.86rem; color: var(--text-muted); }
.persona-chip b { color: var(--text); display: block; margin-bottom: 2px; }
.persona-chip.risk { border-color: rgba(224,82,47,0.35); background: rgba(224,82,47,0.06); }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-dark); color: var(--text-on-dark-muted); border-top: 1px solid var(--border-dark); padding: 40px 0 24px; font-size: 0.9rem; }
.footer-inner { display: flex; flex-direction: column; gap: 18px; }
.footer-brand .footer-name { font-weight: 800; color: var(--text-on-dark); font-size: 1.05rem; margin-bottom: 4px; }
.footer-brand .footer-company, .footer-brand .footer-domain { color: var(--text-on-dark-muted); margin-bottom: 4px; }
.footer-brand .footer-icp { color: var(--text-dim); margin-bottom: 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-nav a { color: var(--text-on-dark-muted); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--text-on-dark); }
.footer-disclaimer { color: var(--text-dim); font-size: 0.82rem; line-height: 1.7; max-width: 70em; margin-bottom: 0; }
.footer-copyright { color: var(--text-dim); font-size: 0.82rem; margin-bottom: 0; }

/* ---------- Misc ---------- */
.section-title-row { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.section-title-row a { font-size: 0.9rem; }
.demo-tag {
  display: inline-block; font-size: 0.72rem; letter-spacing: 0.5px; text-transform: uppercase;
  color: var(--text-dim); border: 1px solid var(--border); border-radius: 999px; padding: 2px 9px; margin-left: 6px; vertical-align: middle;
}