:root {
  --theme: #1a5fd4;
  --theme-dark: #0f3d8c;
  --theme-light: #eef4ff;
  --accent: #c9a227;
  --accent-soft: #faf6eb;
  --title: #0c1a2e;
  --text: #3d4f63;
  --muted: #6b7f96;
  --bg: #f4f7fb;
  --card: #ffffff;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(12, 26, 46, 0.07);
  --shadow-lg: 0 24px 56px rgba(12, 26, 46, 0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--theme), #2563eb);
  color: #fff;
  box-shadow: 0 8px 20px rgba(26, 95, 212, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(26, 95, 212, 0.35);
}

.btn-outline {
  background: #fff;
  color: var(--theme);
  border-color: rgba(26, 95, 212, 0.35);
}

.btn-outline:hover {
  background: var(--theme-light);
  border-color: var(--theme);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover { background: #fff; border-color: var(--theme); color: var(--theme); }

.btn-light {
  background: #fff;
  color: var(--theme-dark);
  border-color: transparent;
}

.btn-light:hover { background: var(--theme-light); }

/* Hero */
.lp-hero {
  padding: 56px 0 72px;
  background:
    radial-gradient(900px 420px at 0% 0%, rgba(26, 95, 212, 0.1), transparent 55%),
    radial-gradient(700px 360px at 100% 20%, rgba(201, 162, 39, 0.08), transparent 50%),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}

.lp-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.lp-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--theme);
  background: var(--theme-light);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.lp-hero h1 {
  font-size: clamp(32px, 4.5vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--title);
  margin-bottom: 16px;
}

.lp-hero-sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 36ch;
  margin-bottom: 12px;
}

.lp-hero-note {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 28px;
}

.lp-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.lp-hero-visual {
  position: relative;
  min-height: 360px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, #0f2744 0%, #1a4a8a 55%, #1e5fbf 100%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  padding: 28px;
}

.lp-hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(201, 162, 39, 0.15), transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.25), transparent 45%);
}

.lp-diagram {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.lp-diagram-title {
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.lp-diagram-core {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 20px 0;
}

.lp-fortress {
  width: 220px;
  height: 220px;
  border: 2px dashed rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  display: grid;
  place-items: center;
  position: relative;
}

.lp-fortress::after {
  content: "";
  position: absolute;
  inset: -18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.lp-fortress-inner {
  width: 140px;
  height: 140px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  color: #fff;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  padding: 16px;
}

.lp-diagram-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.lp-diagram-tags span {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 5px 10px;
  border-radius: 999px;
}

/* Trust bar */
.lp-trust {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.lp-trust-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 28px;
}

.lp-trust-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.lp-trust-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.lp-trust-tags span {
  font-size: 13px;
  font-weight: 600;
  color: var(--title);
  background: var(--bg);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.lp-trust-keywords {
  padding: 0 24px 20px;
  text-align: center;
}

.lp-trust-keywords p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 920px;
  margin: 0 auto;
}

.lp-trust-keywords strong {
  font-weight: 600;
  color: var(--text);
}

/* Section common */
.lp-section { padding: 72px 0; }
.lp-section-alt { background: #fff; }
.lp-section-head { text-align: center; max-width: 640px; margin: 0 auto 40px; }
.lp-section-head h2 { font-size: 28px; color: var(--title); margin-bottom: 10px; letter-spacing: -0.02em; }
.lp-section-head p { font-size: 15px; color: var(--muted); }

/* Pain cards */
.lp-pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.lp-pain-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.lp-pain-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #fef2f2;
  color: #dc2626;
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.lp-pain-card h3 { font-size: 17px; color: var(--title); margin-bottom: 8px; }
.lp-pain-card p { font-size: 14px; color: var(--muted); }

/* Dual path */
.lp-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.lp-path-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lp-path-card.featured {
  border-color: rgba(26, 95, 212, 0.35);
  background: linear-gradient(180deg, #fff 0%, var(--theme-light) 100%);
}

.lp-path-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--theme-light);
  color: var(--theme);
}

.lp-path-card.featured .lp-path-badge {
  background: var(--theme);
  color: #fff;
}

.lp-path-card h3 { font-size: 22px; color: var(--title); }
.lp-path-list { display: flex; flex-direction: column; gap: 10px; }
.lp-path-list li {
  font-size: 14px;
  color: var(--text);
  padding-left: 22px;
  position: relative;
}

.lp-path-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--theme);
  font-weight: 700;
}

.lp-dual-note {
  text-align: center;
  margin-top: 28px;
  font-size: 14px;
  color: var(--muted);
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

/* Capabilities */
.lp-cap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.lp-cap-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.lp-cap-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.lp-cap-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background: var(--theme-light);
  color: var(--theme);
  display: grid;
  place-items: center;
  font-size: 24px;
}

.lp-cap-card h3 { font-size: 16px; color: var(--title); margin-bottom: 8px; }
.lp-cap-card p { font-size: 13px; color: var(--muted); line-height: 1.55; }

/* Xinchuang strip */
.lp-xc {
  background: linear-gradient(135deg, #0f2744, #1a4a8a);
  border-radius: var(--radius);
  padding: 40px 36px;
  color: #fff;
}

.lp-xc h2 { font-size: 22px; margin-bottom: 28px; text-align: center; }

.lp-xc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.lp-xc-item {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
}

.lp-xc-item strong {
  display: block;
  font-size: 13px;
  letter-spacing: 0.04em;
  opacity: 0.75;
  margin-bottom: 8px;
}

.lp-xc-item span { font-size: 14px; font-weight: 600; line-height: 1.5; }

.lp-xc-cta { text-align: center; margin-top: 24px; }

/* Deploy */
.lp-deploy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.lp-deploy-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.lp-deploy-card h3 { font-size: 18px; color: var(--title); margin-bottom: 8px; }
.lp-deploy-card p { font-size: 14px; color: var(--muted); margin-bottom: 12px; }
.lp-deploy-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--theme);
  background: var(--theme-light);
  padding: 4px 10px;
  border-radius: 999px;
}

/* Industry */
.lp-industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.lp-industry-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.lp-industry-card:hover {
  border-color: rgba(26, 95, 212, 0.35);
  box-shadow: var(--shadow);
}

.lp-industry-card h3 { font-size: 16px; color: var(--title); margin-bottom: 6px; }
.lp-industry-card p { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.lp-industry-card .link { font-size: 13px; font-weight: 600; color: var(--theme); }

/* Quotes */
.lp-quotes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.lp-quote {
  background: var(--card);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 24px 28px;
  box-shadow: var(--shadow);
}

.lp-quote p { font-size: 15px; color: var(--text); font-style: italic; margin-bottom: 12px; }
.lp-quote cite { font-size: 13px; color: var(--muted); font-style: normal; }

/* FAQ */
.lp-faq { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.lp-faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lp-faq-item summary {
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--title);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.lp-faq-item summary::-webkit-details-marker { display: none; }

.lp-faq-item summary::after {
  content: "+";
  font-size: 18px;
  color: var(--theme);
  font-weight: 400;
}

.lp-faq-item[open] summary::after { content: "−"; }

.lp-faq-item p {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* CTA band */
.lp-cta-band {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--theme-dark), var(--theme));
  color: #fff;
  text-align: center;
}

.lp-cta-band h2 { font-size: 28px; margin-bottom: 12px; }
.lp-cta-band p { font-size: 15px; opacity: 0.85; margin-bottom: 28px; }
.lp-cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .lp-hero-grid { grid-template-columns: 1fr; }
  .lp-hero-visual { min-height: 300px; }
  .lp-cap-grid { grid-template-columns: repeat(2, 1fr); }
  .lp-xc-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .lp-pain-grid,
  .lp-dual,
  .lp-deploy-grid,
  .lp-industry-grid,
  .lp-quotes { grid-template-columns: 1fr; }
  .lp-cap-grid { grid-template-columns: 1fr; }
  .lp-section { padding: 56px 0; }
}