/* ================================
   微私域 AutoTape 会话管理系统 - 全局样式
   ================================ */

:root {
  --primary: #4F46E5;
  --primary-light: #7C3AED;
  --accent-orange: #F97316;
  --accent-green: #10B981;
  --accent-pink: #EC4899;
  --accent-cyan: #06B6D4;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text-dark: #1E293B;
  --text-gray: #64748B;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Inter", sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 40px;
  cursor: default;
}
.header img { height: 40px; }
.logo-link { display: flex; align-items: center; text-decoration: none; }
.logo-text { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-left: 10px; white-space: nowrap; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 14px; color: var(--text-gray); text-decoration: none; transition: color 0.2s; }
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-cta { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff !important; padding: 8px 20px; border-radius: 50px; font-size: 14px; font-weight: 500; transition: opacity 0.2s; }
.nav-cta:hover { opacity: 0.9; }
.header-spacer { height: 64px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #EEF2FF 0%, #FDF2F8 50%, #F0FDF4 100%);
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(79,70,229,0.12) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(236,72,153,0.1) 0%, transparent 70%);
  bottom: -50px; left: 10%;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(79,70,229,0.08);
  border: 1px solid rgba(79,70,229,0.2);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge-dot { width: 6px; height: 6px; background: var(--primary); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 { font-size: 52px; font-weight: 800; line-height: 1.15; color: var(--text-dark); margin-bottom: 12px; }
.hero h1 span { background: linear-gradient(135deg, var(--primary), var(--accent-pink)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-en { font-size: 14px; color: var(--text-light); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; }
.hero p { font-size: 18px; color: var(--text-gray); margin-bottom: 40px; line-height: 1.7; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; border: none; padding: 14px 32px; border-radius: 50px;
  font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.2s;
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.35); }
.btn-secondary {
  background: #fff; color: var(--text-dark); border: 1px solid var(--border);
  padding: 14px 32px; border-radius: 50px; font-size: 16px; font-weight: 500;
  cursor: pointer; transition: all 0.2s; text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.hero-visual { position: relative; }
.hero-card {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.8s ease-out;
}
@keyframes fadeInUp { from { opacity:0; transform: translateY(30px); } to { opacity:1; transform: translateY(0); } }
.stat-mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-mini { background: #fff; border-radius: var(--radius-md); padding: 20px; text-align: center; }
.stat-mini .num { font-size: 28px; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-mini .label { font-size: 12px; color: var(--text-light); margin-top: 4px; }

/* ===== Section Common ===== */
.section { padding: 100px 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.section-tag { font-size: 13px; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; }
.section-title { font-size: 40px; font-weight: 800; color: var(--text-dark); margin-bottom: 16px; }
.section-desc { font-size: 17px; color: var(--text-gray); max-width: 600px; margin-bottom: 60px; line-height: 1.7; }

/* ===== Value Cards ===== */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.value-card {
  background: #fff; border-radius: var(--radius-lg); padding: 32px 24px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: all 0.3s; position: relative; overflow: hidden;
}
.value-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0; transition: opacity 0.3s;
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.value-card:hover::before { opacity: 1; }
.value-icon { width: 56px; height: 56px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px; }
.value-icon.blue { background: rgba(79,70,229,0.1); }
.value-icon.green { background: rgba(16,185,129,0.1); }
.value-icon.orange { background: rgba(249,115,22,0.1); }
.value-icon.pink { background: rgba(236,72,153,0.1); }
.value-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.value-card p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }

/* ===== Feature Preview Grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: #fff; border-radius: var(--radius-lg); padding: 28px;
  border: 1px solid var(--border); transition: all 0.3s; cursor: pointer;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(79,70,229,0.3); }
.feature-card-icon { font-size: 32px; margin-bottom: 16px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-gray); }

/* ===== Stats Bar ===== */
.stats-bar { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: var(--radius-xl); padding: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 42px; font-weight: 800; color: #fff; }
.stat-item .label { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* ===== Cases ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; border: 1px solid var(--border); }
.case-tag { display: inline-block; background: rgba(79,70,229,0.08); color: var(--primary); font-size: 12px; padding: 4px 12px; border-radius: 50px; font-weight: 500; margin-bottom: 16px; }
.case-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.case-card p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }
.case-result { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; gap: 24px; }
.case-result-item .val { font-size: 22px; font-weight: 700; color: var(--primary); }
.case-result-item .lbl { font-size: 12px; color: var(--text-light); }

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, #EEF2FF, #FDF2F8);
  border-radius: 32px;
  padding: 80px;
  text-align: center;
  margin: 0 40px;
}
.cta-section h2 { font-size: 36px; font-weight: 800; margin-bottom: 16px; }
.cta-section p { font-size: 17px; color: var(--text-gray); margin-bottom: 40px; }

/* ===== Footer ===== */
.footer { background: #1E293B; color: rgba(255,255,255,0.6); padding: 60px 40px 30px; margin-top: 100px; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h3 { color: #fff; font-size: 20px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 14px; text-decoration: none; margin-bottom: 10px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; justify-content: space-between; align-items: center; font-size: 13px; }

/* ===== Page Nav (Features/Deploy/Pricing) ===== */
.page-hero {
  background: linear-gradient(135deg, #EEF2FF, #FDF2F8);
  padding: 80px 0 60px;
  text-align: center;
}
.page-hero h1 { font-size: 44px; font-weight: 800; margin-bottom: 16px; }
.page-hero p { font-size: 18px; color: var(--text-gray); max-width: 600px; margin: 0 auto; }

/* ===== Feature Detail (left nav + right content) ===== */
.feature-layout { padding: 60px 0; }
.feature-nav { position: sticky; top: 84px; height: fit-content; }
.feature-nav-item { display: block; padding: 12px 16px; color: var(--text-gray); font-size: 14px; text-decoration: none; border-radius: var(--radius-sm); transition: all 0.2s; margin-bottom: 4px; }
.feature-nav-item:hover, .feature-nav-item.active { background: rgba(79,70,229,0.08); color: var(--primary); font-weight: 600; }
.feature-content h2 { font-size: 32px; font-weight: 700; margin-bottom: 16px; color: var(--text-dark); }
.feature-content h3 { font-size: 20px; font-weight: 700; margin: 40px 0 16px; }
.feature-content p { color: var(--text-gray); line-height: 1.8; margin-bottom: 16px; }
.feature-block { background: #fff; border-radius: var(--radius-lg); padding: 32px; border: 1px solid var(--border); margin-bottom: 24px; }
.feature-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.feature-block h4 .icon { font-size: 20px; }
.badge-new { background: var(--accent-orange); color: #fff; font-size: 11px; padding: 2px 8px; border-radius: 50px; font-weight: 600; }

/* ===== Comparison Table ===== */
.compare-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.compare-table th { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; padding: 16px 20px; text-align: left; font-size: 15px; }
.compare-table td { padding: 14px 20px; border-bottom: 1px solid var(--border); font-size: 14px; vertical-align: top; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: rgba(79,70,229,0.03); }
.check { color: var(--accent-green); font-size: 18px; }
.cross { color: var(--text-light); font-size: 18px; }

/* ===== Pricing Cards ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card { background: #fff; border-radius: var(--radius-xl); padding: 40px 32px; border: 2px solid var(--border); transition: all 0.3s; position: relative; }
.pricing-card.popular { border-color: var(--primary); transform: scale(1.04); }
.pricing-card.popular::before { content: '最受欢迎'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 20px; border-radius: 50px; white-space: nowrap; }
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pricing-card.popular:hover { transform: scale(1.04) translateY(-6px); }
.pricing-name { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.pricing-desc { font-size: 13px; color: var(--text-gray); margin-bottom: 24px; }
.pricing-price { margin-bottom: 24px; }
.pricing-price .amount { font-size: 42px; font-weight: 800; color: var(--primary); }
.pricing-price .unit { font-size: 14px; color: var(--text-gray); }
.pricing-price .original { font-size: 16px; color: var(--text-light); text-decoration: line-through; margin-left: 8px; }
.pricing-features { list-style: none; margin-bottom: 32px; }
.pricing-features li { font-size: 14px; color: var(--text-gray); padding: 8px 0; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.pricing-features li .icon { color: var(--accent-green); }
.pricing-btn { width: 100%; padding: 14px; border-radius: 50px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.2s; text-align: center; text-decoration: none; display: block; }
.pricing-btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; border: none; }
.pricing-btn.primary:hover { opacity: 0.9; transform: translateY(-2px); }
.pricing-btn.outline { background: #fff; color: var(--primary); border: 2px solid var(--primary); }
.pricing-btn.outline:hover { background: rgba(79,70,229,0.05); }

/* ===== Pricing Calculator ===== */
.calc-section { background: #fff; border-radius: var(--radius-xl); padding: 48px; border: 1px solid var(--border); margin-top: 60px; }
.calc-section h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.calc-section > p { color: var(--text-gray); margin-bottom: 32px; font-size: 14px; }
.calc-row { display: flex; align-items: center; gap: 40px; margin-bottom: 32px; flex-wrap: wrap; }
.calc-label { font-size: 15px; font-weight: 600; min-width: 100px; }
.calc-slider { flex: 1; min-width: 200px; }
input[type="range"] { width: 100%; height: 6px; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-light)); outline: none; -webkit-appearance: none; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; background: #fff; border: 3px solid var(--primary); border-radius: 50%; cursor: pointer; box-shadow: var(--shadow-md); }
.calc-value { font-size: 18px; font-weight: 700; color: var(--primary); min-width: 80px; text-align: right; }
.calc-result { background: linear-gradient(135deg, rgba(79,70,229,0.06), rgba(124,58,237,0.06)); border-radius: var(--radius-lg); padding: 24px; display: flex; justify-content: space-between; align-items: center; }
.calc-result .price strong { font-size: 36px; font-weight: 800; color: var(--primary); }
.calc-result .price span { font-size: 14px; color: var(--text-gray); }
.calc-result .actions { display: flex; gap: 12px; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q { padding: 20px 0; font-size: 16px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.faq-q .arrow { transition: transform 0.3s; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s; font-size: 14px; color: var(--text-gray); line-height: 1.8; padding-bottom: 0; }
.faq-item.open .faq-a { max-height: 200px; padding-bottom: 20px; }
.faq-item.open .arrow { transform: rotate(180deg); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-btns { justify-content: center; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.popular { transform: scale(1); }
  .pricing-card.popular:hover { transform: translateY(-6px); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-layout { grid-template-columns: 1fr; }
  .feature-nav { position: static; display: flex; flex-wrap: wrap; gap: 8px; }
}
@media (max-width: 768px) {
  .header { padding: 0 20px; }
  .header-right { gap: 16px; }
  .nav-link:not(.nav-cta) { display: none; }
  .container { padding: 0 20px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .hero h1 { font-size: 32px; }
  .hero-inner { padding: 40px 20px; }
  .value-grid, .feature-grid, .cases-grid, .pricing-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); padding: 32px; }
  .cta-section { padding: 48px 24px; margin: 0 20px; }
  .footer { padding: 40px 20px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .page-hero h1 { font-size: 30px; }
  .compare-table { font-size: 13px; }
  .calc-row { flex-direction: column; align-items: flex-start; gap: 12px; }
  .calc-result { flex-direction: column; gap: 16px; text-align: center; }
}