/* 北亦文枢 · 营销落地页 Premium */
:root {
  --lp-primary: #1677ff;
  --lp-primary-dark: #0958d9;
  --lp-primary-light: #e6f4ff;
  --lp-dark: #001529;
  --lp-text: rgba(0, 0, 0, 0.88);
  --lp-muted: rgba(0, 0, 0, 0.55);
  --lp-border: #e8ecf1;
  --lp-radius: 16px;
  --lp-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --lp-max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--lp-font);
  color: var(--lp-text);
  background: #fff;
  line-height: 1.65;
  font-size: 16px;
}

a { color: var(--lp-primary); text-decoration: none; }
a:hover { color: var(--lp-primary-dark); }

/* Nav */
.lp2-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--lp-border);
}
.lp2-nav-bar,
.lp2-nav-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.lp2-logo {
  font-weight: 800;
  font-size: 20px;
  color: var(--lp-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.lp2-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--lp-dark), var(--lp-primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.lp2-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
  background: none;
  border-radius: 0;
}
.lp2-nav-links {
  display: flex;
  gap: 36px;
  font-size: 15px;
  font-weight: 500;
}
.lp2-nav-links a { color: var(--lp-muted); }
.lp2-nav-links a:hover { color: var(--lp-primary); }
.lp2-nav-actions { display: flex; gap: 12px; align-items: center; }

.lp2-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
  font-family: inherit;
}
.lp2-btn-primary {
  background: var(--lp-primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(22, 119, 255, 0.4);
}
.lp2-btn-primary:hover {
  background: var(--lp-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(22, 119, 255, 0.45);
}
.lp2-btn-outline {
  background: transparent;
  color: var(--lp-text);
  border: 1.5px solid var(--lp-border);
}
.lp2-btn-outline:hover { border-color: var(--lp-primary); color: var(--lp-primary); }
.lp2-btn-white {
  background: #fff;
  color: var(--lp-primary);
}
.lp2-btn-white:hover { background: var(--lp-primary-light); }
.lp2-btn-lg { padding: 16px 32px; font-size: 16px; }
.lp2-btn-block { width: 100%; }

/* Hero — 大气全屏 */
.lp2-hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  background: linear-gradient(160deg, #000c1a 0%, #001529 35%, #0d3d7a 70%, #1677ff 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.lp2-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 70% 10%, rgba(255,255,255,0.12) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 10% 90%, rgba(22,119,255,0.35) 0%, transparent 50%);
  pointer-events: none;
}
.lp2-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, black 20%, transparent 90%);
}
.lp2-hero-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
  text-align: center;
}
.lp2-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.lp2-hero h1 {
  font-size: clamp(40px, 6.5vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.lp2-hero-lead {
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.8;
  color: rgba(255,255,255,0.88);
  max-width: 720px;
  margin: 0 auto 40px;
}
.lp2-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 56px;
}
.lp2-hero-metrics {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.15);
  max-width: 800px;
  margin: 0 auto;
}
.lp2-metric strong {
  display: block;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.lp2-metric span {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-top: 4px;
  display: block;
}

/* Sections */
.lp2-section {
  padding: 100px 32px;
}
.lp2-section-dark {
  background: var(--lp-dark);
  color: #fff;
}
.lp2-section-soft { background: #f6f9fc; }
.lp2-inner { max-width: var(--lp-max); margin: 0 auto; }
.lp2-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.lp2-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.lp2-head p { font-size: 17px; color: var(--lp-muted); line-height: 1.75; }
.lp2-section-dark .lp2-head p { color: rgba(255,255,255,0.7); }

/* Pillars */
.lp2-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.lp2-pillar {
  background: #fff;
  border-radius: var(--lp-radius);
  padding: 40px 32px;
  border: 1px solid var(--lp-border);
  transition: transform 0.25s, box-shadow 0.25s;
}
.lp2-pillar:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.08);
}
.lp2-pillar-num {
  font-size: 48px;
  font-weight: 800;
  color: var(--lp-primary-light);
  line-height: 1;
  margin-bottom: 16px;
  -webkit-text-stroke: 1px var(--lp-primary);
  color: transparent;
}
.lp2-pillar h3 { font-size: 20px; margin-bottom: 12px; font-weight: 700; }
.lp2-pillar p { color: var(--lp-muted); font-size: 15px; line-height: 1.75; }

/* Pricing */
.lp2-pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.lp2-price {
  background: #fff;
  border-radius: var(--lp-radius);
  padding: 40px 32px;
  border: 1px solid var(--lp-border);
  display: flex;
  flex-direction: column;
  position: relative;
}
.lp2-price.hot {
  border: 2px solid var(--lp-primary);
  box-shadow: 0 24px 56px rgba(22,119,255,0.18);
  transform: scale(1.04);
}
.lp2-price-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--lp-primary), #4096ff);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 999px;
}
.lp2-price-label { font-size: 13px; font-weight: 700; color: var(--lp-primary); letter-spacing: 0.08em; margin-bottom: 8px; }
.lp2-price h3 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.lp2-price-desc { color: var(--lp-muted); font-size: 15px; margin-bottom: 24px; min-height: 48px; }
.lp2-price-head { margin-bottom: 28px; }
.lp2-price-num { font-size: 48px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; margin-bottom: 6px; }
.lp2-price-num small { font-size: 20px; font-weight: 600; }
.lp2-price-unit { font-size: 18px; font-weight: 600; color: var(--lp-muted); white-space: nowrap; }
.lp2-price-period { color: var(--lp-muted); font-size: 14px; margin: 0; white-space: nowrap; }
.lp2-price ul { list-style: none; flex: 1; margin-bottom: 28px; }
.lp2-price li {
  padding: 10px 0;
  font-size: 15px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border-bottom: 1px solid var(--lp-border);
}
.lp2-price li::before {
  content: "✓";
  color: var(--lp-primary);
  font-weight: 800;
  flex-shrink: 0;
}

/* Consult */
.lp2-consult-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.lp2-consult-copy h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.2;
}
.lp2-consult-copy p {
  font-size: 17px;
  color: var(--lp-muted);
  margin-bottom: 24px;
  line-height: 1.8;
}
.lp2-consult-points {
  list-style: none;
}
.lp2-consult-points li {
  padding: 12px 0;
  font-size: 16px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.lp2-consult-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--lp-primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.lp2-form-card {
  background: #fff;
  border-radius: var(--lp-radius);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  border: 1px solid var(--lp-border);
}
.lp2-form-card h3 { font-size: 20px; margin-bottom: 24px; font-weight: 700; }
.lp2-field { margin-bottom: 20px; }
.lp2-field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--lp-text);
}
.lp2-field label span { color: #ff4d4f; }
.lp2-field input,
.lp2-field select,
.lp2-field textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--lp-border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.lp2-field input:focus,
.lp2-field select:focus,
.lp2-field textarea:focus {
  outline: none;
  border-color: var(--lp-primary);
  box-shadow: 0 0 0 3px var(--lp-primary-light);
}
.lp2-field textarea { min-height: 100px; resize: vertical; }
.lp2-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* QR */
.lp2-qr-section { text-align: center; }
.lp2-qr-tabs {
  display: inline-flex;
  background: #fff;
  border: 1px solid var(--lp-border);
  border-radius: 12px;
  padding: 6px;
  margin-bottom: 40px;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}
.lp2-qr-tab {
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  color: var(--lp-muted);
  transition: all 0.2s;
  border: none;
  background: transparent;
  font-family: inherit;
}
.lp2-qr-tab:hover { color: var(--lp-primary); }
.lp2-qr-tab.active {
  background: var(--lp-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(22,119,255,0.35);
}
.lp2-qr-panels { position: relative; min-height: 320px; }
.lp2-qr-panel { display: none; animation: lp2fade 0.35s ease; }
.lp2-qr-panel.active { display: block; }

@keyframes lp2fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.lp2-qr-card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  border-radius: var(--lp-radius);
  padding: 40px 48px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.06);
  border: 1px solid var(--lp-border);
}
.lp2-qr-card img {
  width: 200px;
  height: 200px;
  border-radius: 12px;
  border: 1px solid var(--lp-border);
  margin-bottom: 20px;
}
.lp2-qr-card h4 { font-size: 20px; margin-bottom: 8px; }
.lp2-qr-card p { color: var(--lp-muted); font-size: 15px; max-width: 280px; }

/* FAQ — 自信版 */
.lp2-faq {
  max-width: 800px;
  margin: 0 auto;
}
.lp2-faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.12);
  padding: 28px 0;
}
.lp2-section-dark .lp2-faq-item { border-color: rgba(255,255,255,0.12); }
.lp2-section-soft .lp2-faq-item { border-color: var(--lp-border); }
.lp2-faq-item h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.lp2-faq-item p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--lp-muted);
}
.lp2-section-dark .lp2-faq-item p { color: rgba(255,255,255,0.75); }

/* CTA */
.lp2-cta-final {
  text-align: center;
  padding: 100px 32px;
  background: linear-gradient(135deg, #001529, #1677ff);
  color: #fff;
}
.lp2-cta-final h2 { font-size: 40px; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
.lp2-cta-final p { font-size: 18px; opacity: 0.9; margin-bottom: 36px; }

/* Footer */
.lp2-footer {
  padding: 48px 32px;
  background: #000a14;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
}
.lp2-footer-inner {
  max-width: var(--lp-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.lp2-footer a { color: rgba(255,255,255,0.8); }
.lp2-footer-addr {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  max-width: 280px;
  color: rgba(255,255,255,0.55);
}
.lp2-footer-legal {
  max-width: var(--lp-max);
  margin: 20px auto 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.45);
}
.lp2-footer-legal a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
}
.lp2-footer-legal a:hover { color: rgba(255,255,255,0.85); }
.lp2-footer-legal-sep { margin: 0 10px; opacity: 0.5; }

.lp2-wechat-id-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0 4px;
  padding: 8px 12px;
  background: rgba(0,0,0,0.04);
  border-radius: 8px;
  font-size: 14px;
}
.lp2-btn-copy {
  border: 1px solid var(--lp-border, #d0d7de);
  background: #fff;
  color: var(--lp-text, #1a1a1a);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.lp2-btn-copy:hover { border-color: var(--lp-primary, #0066cc); color: var(--lp-primary, #0066cc); }
.lp2-consult-wechat .lp2-wechat-id-row {
  display: flex;
  justify-content: center;
  width: 100%;
  max-width: 280px;
  margin-left: auto;
  margin-right: auto;
}

/* Float consult */
.lp2-float {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.lp2-float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--lp-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(22,119,255,0.5);
  font-size: 22px;
  transition: transform 0.2s;
}
.lp2-float-btn:hover { transform: scale(1.08); }
.lp2-float-label {
  background: var(--lp-dark);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

/* Modal */
.lp2-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 400;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.lp2-modal-overlay.show { display: flex; }
.lp2-modal {
  background: #fff;
  border-radius: var(--lp-radius);
  max-width: 480px;
  width: 100%;
  padding: 32px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.lp2-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: #f5f5f5;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
}
.lp2-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--lp-dark);
  color: #fff;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  z-index: 500;
  opacity: 0;
  transition: all 0.3s;
  pointer-events: none;
}
.lp2-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 1024px) {
  .lp2-nav-links { display: none; }
  .lp2-pillars, .lp2-pricing { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .lp2-price.hot { transform: none; }
  .lp2-consult-grid { grid-template-columns: 1fr; }
  .lp2-form-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .lp2-hero-metrics { gap: 28px; }
  .lp2-metric strong { font-size: 28px; }
}