/* =========================================================
   济南音特智软件技术有限公司 · 主题样式
   基于上传模板的设计令牌改写（深色科技风 + 霓虹强调色）
   ========================================================= */

/* ============ 设计 Token ============ */
:root {
  --bg-primary: #0B1229;
  --bg-secondary: #111A31;
  --bg-tertiary: #16213D;
  --bg-elevated: #1B2745;
  --border: #1E2C4A;
  --border-light: #2C3B60;
  --text-primary: #F5F8FC;
  --text-secondary: #C5D0E0;
  --text-muted: #8A9AB0;
  --accent: #22D3EE;
  --accent-dim: #0891B2;
  --accent-glow: rgba(34, 211, 238, 0.12);
  --accent-soft: rgba(34, 211, 238, 0.06);
  --orange: #FF6B35;
  --orange-glow: rgba(255, 107, 53, 0.15);
  --purple: #8B7CF8;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px rgba(34,211,238,0.15);
  --font-display: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --nav-height: 72px;
  --container: 1200px;
}

/* ============ 全局重置 ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--accent); color: var(--bg-primary); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ============ 导航栏 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-height);
  display: flex; align-items: center;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  background: transparent;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11, 18, 41, 0.85);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 32px;
  width: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 20px;
  letter-spacing: -0.02em;
}
.nav-logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dim) 100%);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.nav-logo-mark::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4), transparent 60%);
}
.nav-logo-mark svg { position: relative; z-index: 1; }
.nav-logo span { background: linear-gradient(135deg, var(--text-primary), var(--text-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-logo b { color: var(--accent); font-weight: 700; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 8px 12px; border-radius: 8px;
  font-size: 14px; font-weight: 500; color: var(--text-secondary);
  transition: all 0.2s; position: relative;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}

.nav-cta {
  display: flex; align-items: center; gap: 12px;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px; font-size: 14px; font-weight: 600;
  transition: all 0.25s cubic-bezier(0.4,0,0.2,1); white-space: nowrap;
  font-family: var(--font-display); letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--accent); color: var(--bg-primary);
  box-shadow: 0 2px 12px rgba(34,211,238,0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(34,211,238,0.4); }
.btn-ghost {
  background: transparent; color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.btn-orange {
  background: var(--orange); color: #fff;
  box-shadow: 0 2px 12px rgba(255,107,53,0.3);
}
.btn-orange:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(255,107,53,0.45); }
.btn-lg { padding: 16px 32px; font-size: 15px; border-radius: 12px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s; }
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

.mobile-menu {
  display: none; position: fixed; top: var(--nav-height); left: 0; right: 0;
  background: rgba(11,18,41,0.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border); padding: 20px 32px 32px;
  flex-direction: column; gap: 4px; z-index: 999;
  max-height: calc(100vh - var(--nav-height)); overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { padding: 14px 16px; font-size: 16px; border-radius: 10px; }
.mobile-menu .btn { width: 100%; margin-top: 12px; }

/* ============ Hero 区 ============ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--nav-height); overflow: hidden;
}
.hero-canvas {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%; display: block;
  opacity: 0.6;
}
.hero-bg-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(34,211,238,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
}
.hero-glow {
  position: absolute; top: 20%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(60px); z-index: 0; pointer-events: none;
}
.hero-content {
  position: relative; z-index: 2; max-width: var(--container);
  margin: 0 auto; padding: 96px 32px 120px; text-align: center; width: 100%;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 100px;
  background: var(--accent-soft); border: 1px solid rgba(34,211,238,0.2);
  font-size: 13px; font-weight: 500; color: var(--accent);
  margin-bottom: 32px; font-family: var(--font-mono);
  animation: badgePulse 3s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,211,238,0.2); }
  50% { box-shadow: 0 0 0 8px rgba(34,211,238,0); }
}
.hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: blink 2s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(34px, 6vw, 72px); line-height: 1.08;
  letter-spacing: -0.03em; margin-bottom: 24px;
}
.hero-title .line { display: block; }
.hero-title .highlight {
  background: linear-gradient(135deg, var(--accent) 0%, #67E8F9 50%, var(--accent) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% auto; animation: shimmer 4s linear infinite;
}
@keyframes shimmer { to { background-position: 200% center; } }
.hero-title .orange { color: var(--orange); -webkit-text-fill-color: var(--orange); }

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px); color: var(--text-secondary);
  max-width: 700px; margin: 0 auto 40px; line-height: 1.8; font-weight: 300;
}
.hero-subtitle strong { color: var(--text-primary); font-weight: 500; }

.hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }

.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap;
  padding-top: 40px; border-top: 1px solid var(--border);
  max-width: 820px; margin: 0 auto;
}
.hero-stat { text-align: center; }
.hero-stat-num {
  font-family: var(--font-display); font-size: 36px; font-weight: 700;
  color: var(--accent); line-height: 1; margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.hero-stat-num .unit { font-size: 18px; color: var(--text-secondary); margin-left: 2px; }
.hero-stat-label { font-size: 13px; color: var(--text-muted); font-weight: 400; }

.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 12px; font-family: var(--font-mono);
  animation: floatHint 2.5s ease-in-out infinite;
}
@keyframes floatHint { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }
.hero-scroll-hint svg { opacity: 0.6; }

/* ============ 通用 Section ============ */
.section { padding: 120px 0; position: relative; }
.section-header { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.section-eyebrow {
  display: inline-block; font-family: var(--font-mono); font-size: 13px;
  font-weight: 500; color: var(--accent); text-transform: uppercase;
  letter-spacing: 0.15em; margin-bottom: 16px;
  padding: 6px 14px; border-radius: 6px; background: var(--accent-soft);
  border: 1px solid rgba(34,211,238,0.15);
}
.section-title {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 48px);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 20px;
}
.section-desc { font-size: 17px; color: var(--text-secondary); line-height: 1.8; font-weight: 300; }

/* ============ 痛点区 ============ */
.pain { background: var(--bg-secondary); position: relative; overflow: hidden; }
.pain::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pain-card {
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 36px 32px;
  transition: all 0.3s; position: relative; overflow: hidden;
}
.pain-card:hover { border-color: rgba(255,107,53,0.3); transform: translateY(-4px); }
.pain-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
}
.pain-card:hover::before { transform: scaleX(1); }
.pain-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--orange-glow); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: var(--orange);
}
.pain-title { font-family: var(--font-display); font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.pain-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ============ 核心服务区 ============ */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 44px 40px;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1); position: relative; overflow: hidden;
}
.feature-card:hover {
  border-color: rgba(34,211,238,0.3); transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.feature-card::after {
  content: ''; position: absolute; top: -50%; right: -50%; width: 300px; height: 300px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.feature-card:hover::after { opacity: 1; }
.feature-num {
  font-family: var(--font-mono); font-size: 13px; color: var(--accent);
  font-weight: 500; margin-bottom: 20px; letter-spacing: 0.1em;
}
.feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  border: 1px solid rgba(34,211,238,0.2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px; color: var(--accent); position: relative; z-index: 1;
}
.feature-title {
  font-family: var(--font-display); font-size: 24px; font-weight: 600;
  margin-bottom: 14px; position: relative; z-index: 1;
}
.feature-desc {
  font-size: 15px; color: var(--text-secondary); line-height: 1.8;
  margin-bottom: 20px; position: relative; z-index: 1;
}
.feature-tags { display: flex; flex-wrap: wrap; gap: 8px; position: relative; z-index: 1; }
.feature-tag {
  padding: 5px 12px; border-radius: 6px; font-size: 12px; font-family: var(--font-mono);
  background: var(--bg-tertiary); color: var(--text-secondary); border: 1px solid var(--border);
}

/* ============ 方法论区 ============ */
.rag { background: var(--bg-secondary); position: relative; overflow: hidden; }
.rag::before {
  content: ''; position: absolute; top: 50%; right: -200px; transform: translateY(-50%);
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(139,124,248,0.08), transparent 70%);
  pointer-events: none;
}
.rag-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.rag-visual {
  position: relative; aspect-ratio: 1; max-width: 480px; margin: 0 auto; width: 100%;
}
.rag-ring {
  position: absolute; border-radius: 50%; border: 1px solid var(--border-light);
  animation: ringRotate 20s linear infinite;
}
.rag-ring:nth-child(1) { inset: 0; border-style: dashed; border-color: rgba(34,211,238,0.15); }
.rag-ring:nth-child(2) { inset: 15%; border-color: rgba(139,124,248,0.2); animation-duration: 15s; animation-direction: reverse; }
.rag-ring:nth-child(3) { inset: 30%; border-color: rgba(34,211,238,0.25); animation-duration: 10s; }
@keyframes ringRotate { to { transform: rotate(360deg); } }
.rag-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 120px; height: 120px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 60px rgba(34,211,238,0.4);
  font-family: var(--font-display); font-weight: 700; font-size: 22px;
  color: var(--bg-primary); z-index: 2;
}
.rag-node {
  position: absolute; width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg-tertiary); border: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--accent); z-index: 1;
  animation: nodePulse 3s ease-in-out infinite;
}
.rag-node:nth-child(4) { top: 5%; left: 50%; transform: translateX(-50%); animation-delay: 0s; }
.rag-node:nth-child(5) { top: 50%; right: 5%; transform: translateY(-50%); animation-delay: 0.5s; }
.rag-node:nth-child(6) { bottom: 5%; left: 50%; transform: translateX(-50%); animation-delay: 1s; }
.rag-node:nth-child(7) { top: 50%; left: 5%; transform: translateY(-50%); animation-delay: 1.5s; }
@keyframes nodePulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(34,211,238,0.3); } 50% { box-shadow: 0 0 0 10px rgba(34,211,238,0); } }

.rag-content .section-eyebrow { text-align: left; }
.rag-content .section-title { text-align: left; }
.rag-content .section-desc { text-align: left; margin-bottom: 32px; }
.rag-steps { display: flex; flex-direction: column; gap: 20px; }
.rag-step {
  display: flex; gap: 20px; padding: 20px; border-radius: var(--radius-md);
  background: var(--bg-primary); border: 1px solid var(--border);
  transition: all 0.3s;
}
.rag-step:hover { border-color: rgba(34,211,238,0.25); background: var(--bg-tertiary); }
.rag-step-num {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 10px;
  background: var(--accent-soft); border: 1px solid rgba(34,211,238,0.2);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 14px; font-weight: 600; color: var(--accent);
}
.rag-step-text h4 { font-family: var(--font-display); font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.rag-step-text p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ============ 服务流程区 ============ */
.agent-demo { position: relative; }
.agent-demo-box {
  max-width: 900px; margin: 0 auto;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-xl); overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.agent-demo-header {
  display: flex; align-items: center; gap: 8px; padding: 16px 24px;
  background: var(--bg-tertiary); border-bottom: 1px solid var(--border);
}
.agent-demo-dot { width: 12px; height: 12px; border-radius: 50%; }
.agent-demo-dot:nth-child(1) { background: #FF5F57; }
.agent-demo-dot:nth-child(2) { background: #FEBC2E; }
.agent-demo-dot:nth-child(3) { background: #28C840; }
.agent-demo-title {
  margin-left: 16px; font-family: var(--font-mono); font-size: 13px;
  color: var(--text-muted);
}
.agent-demo-body { padding: 32px; }
.agent-chat { display: flex; flex-direction: column; gap: 20px; margin-bottom: 28px; max-height: 420px; overflow-y: auto; }
.chat-msg { display: flex; gap: 12px; max-width: 85%; }
.chat-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.chat-avatar {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.chat-msg.ai .chat-avatar { background: linear-gradient(135deg, var(--accent), var(--accent-dim)); color: var(--bg-primary); }
.chat-msg.user .chat-avatar { background: var(--bg-tertiary); border: 1px solid var(--border-light); color: var(--text-secondary); }
.chat-bubble {
  padding: 14px 18px; border-radius: 14px; font-size: 14px; line-height: 1.7;
}
.chat-msg.ai .chat-bubble { background: var(--bg-primary); border: 1px solid var(--border); border-top-left-radius: 4px; }
.chat-msg.user .chat-bubble { background: var(--accent); color: var(--bg-primary); border-top-right-radius: 4px; font-weight: 500; }
.chat-bubble .typing { display: inline-flex; gap: 4px; }
.chat-bubble .typing span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted);
  animation: typingBounce 1.4s infinite;
}
.chat-bubble .typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-bubble .typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-6px); opacity: 1; } }

.agent-result {
  padding: 20px; border-radius: var(--radius-md);
  background: var(--bg-primary); border: 1px solid rgba(34,211,238,0.2);
  position: relative;
}
.agent-result-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 12px;
}
.agent-result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.agent-result-item {
  padding: 12px; border-radius: 8px; background: var(--bg-secondary);
  border: 1px solid var(--border); text-align: center;
}
.agent-result-item-val { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--accent); }
.agent-result-item-key { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.agent-input-bar {
  display: flex; gap: 12px; padding: 20px;
  background: var(--bg-tertiary); border-top: 1px solid var(--border);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}
.agent-input {
  flex: 1; padding: 14px 18px; border-radius: 10px;
  background: var(--bg-primary); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 14px; font-family: var(--font-body);
  outline: none; transition: border-color 0.2s;
}
.agent-input:focus { border-color: var(--accent); }
.agent-input::placeholder { color: var(--text-muted); }

/* ============ 多端触达区 ============ */
.network { background: var(--bg-secondary); position: relative; overflow: hidden; }
.network-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.network-visual {
  position: relative; height: 400px;
}
.network-center-node {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 92px; height: 92px; border-radius: 24px;
  background: linear-gradient(135deg, var(--orange), #FF8F5E);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 40px rgba(255,107,53,0.4); z-index: 3;
  font-family: var(--font-display); font-weight: 700; font-size: 15px; color: #fff;
}
.network-satellite {
  position: absolute; width: 60px; height: 60px; border-radius: 16px;
  background: var(--bg-tertiary); border: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; z-index: 2;
  animation: satFloat 4s ease-in-out infinite;
}
.network-satellite:nth-child(2) { top: 10%; left: 20%; animation-delay: 0s; }
.network-satellite:nth-child(3) { top: 15%; right: 15%; animation-delay: 0.5s; }
.network-satellite:nth-child(4) { bottom: 20%; left: 10%; animation-delay: 1s; }
.network-satellite:nth-child(5) { bottom: 10%; right: 20%; animation-delay: 1.5s; }
.network-satellite:nth-child(6) { top: 45%; left: 2%; animation-delay: 2s; }
.network-satellite:nth-child(7) { top: 40%; right: 2%; animation-delay: 2.5s; }
@keyframes satFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.network-content .section-eyebrow,
.network-content .section-title,
.network-content .section-desc { text-align: left; }
.network-content .section-desc { margin-bottom: 32px; }
.network-features { display: flex; flex-direction: column; gap: 16px; }
.network-feature {
  display: flex; align-items: flex-start; gap: 14px; padding: 16px 20px;
  border-radius: var(--radius-md); background: var(--bg-primary);
  border: 1px solid var(--border); transition: all 0.3s;
}
.network-feature:hover { border-color: rgba(255,107,53,0.3); }
.network-feature-icon {
  flex-shrink: 0; width: 32px; height: 32px; border-radius: 8px;
  background: var(--orange-glow); display: flex; align-items: center; justify-content: center;
  color: var(--orange);
}
.network-feature-text h4 { font-family: var(--font-display); font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.network-feature-text p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* ============ 合作方式区 ============ */
.pricing { position: relative; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; max-width: 960px; margin: 0 auto; }
.price-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 44px 40px; position: relative;
  transition: all 0.3s;
}
.price-card:hover { transform: translateY(-4px); }
.price-card.free { border-color: var(--border); }
.price-card.pro {
  border-color: rgba(255,107,53,0.3);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(255,107,53,0.03) 100%);
  box-shadow: 0 8px 40px rgba(255,107,53,0.08);
}
.price-badge {
  position: absolute; top: -12px; right: 32px;
  padding: 6px 16px; border-radius: 100px;
  background: var(--orange); color: #fff; font-size: 12px; font-weight: 600;
  font-family: var(--font-display); letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(255,107,53,0.3);
}
.price-name {
  font-family: var(--font-display); font-size: 22px; font-weight: 700;
  margin-bottom: 8px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.price-name .icon { color: var(--accent); }
.price-card.pro .price-name .icon { color: var(--orange); }
.price-tagline { font-size: 14px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.6; }
.price-divider { height: 1px; background: var(--border); margin-bottom: 28px; }
.price-features { display: flex; flex-direction: column; gap: 14px; margin-bottom: 36px; }
.price-feature {
  display: flex; align-items: flex-start; gap: 12px; font-size: 14px;
  color: var(--text-secondary); line-height: 1.5;
}
.price-feature .check {
  flex-shrink: 0; width: 20px; height: 20px; border-radius: 6px;
  background: var(--accent-soft); display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-top: 1px;
}
.price-card.pro .price-feature .check { background: var(--orange-glow); color: var(--orange); }
.price-feature strong { color: var(--text-primary); font-weight: 500; }
.price-feature .pro-tag {
  display: inline-block; padding: 1px 8px; border-radius: 4px;
  background: var(--orange-glow); color: var(--orange); font-size: 11px;
  font-weight: 600; font-family: var(--font-mono); margin-left: 4px;
}
.price-cta { width: 100%; }

/* ============ 客户案例区 ============ */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 32px;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}
.case-card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,0.3); box-shadow: var(--shadow-glow); }
.case-tag {
  display: inline-block; padding: 4px 12px; border-radius: 100px;
  font-size: 12px; font-family: var(--font-mono); color: var(--accent);
  background: var(--accent-soft); border: 1px solid rgba(34,211,238,0.2);
  margin-bottom: 18px;
}
.case-metric {
  font-family: var(--font-display); font-size: 34px; font-weight: 700;
  color: var(--accent); line-height: 1.1; margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}
.case-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

/* ============ 行业资讯区 ============ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  display: flex; flex-direction: column;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}
.news-card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,0.3); box-shadow: var(--shadow-glow); }
.news-card-body { padding: 28px 26px; display: flex; flex-direction: column; height: 100%; }
.news-meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.news-title { font-family: var(--font-display); font-size: 18px; font-weight: 600; line-height: 1.45; margin-bottom: 12px; }
.news-card:hover .news-title { color: var(--accent); }
.news-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.75; flex: 1; }
.news-link { display: inline-block; margin-top: 18px; font-size: 13px; font-weight: 600; color: var(--accent); }
.news-empty { text-align: center; font-size: 15px; color: var(--text-muted); }

/* ============ 流程步骤网格 ============ */
.process-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  max-width: 960px; margin: 48px auto 0;
}
.process-item {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 24px;
  transition: all 0.3s;
}
.process-item:hover { border-color: rgba(34,211,238,0.25); transform: translateY(-3px); }
.process-item .n {
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
  letter-spacing: 0.1em; margin-bottom: 10px;
}
.process-item h4 { font-family: var(--font-display); font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.process-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

/* ============ 联系我们 ============ */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 960px; margin: 0 auto; }
.contact-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 28px; text-align: center;
  transition: all 0.3s;
}
.contact-card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,0.3); }
.contact-icon {
  width: 48px; height: 48px; border-radius: 12px; margin: 0 auto 18px;
  background: var(--accent-soft); border: 1px solid rgba(34,211,238,0.2);
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.contact-label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.contact-value {
  display: block; font-family: var(--font-display); font-size: 18px; font-weight: 600;
  color: var(--text-primary); word-break: break-all;
}
a.contact-value:hover { color: var(--accent); }
.contact-sub { font-size: 12px; color: var(--text-muted); margin-top: 8px; line-height: 1.6; }

/* ============ FAQ 区 ============ */
.faq { background: var(--bg-secondary); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden; transition: all 0.3s;
}
.faq-item.open { border-color: rgba(34,211,238,0.25); }
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 28px; text-align: left; font-size: 16px; font-weight: 500;
  font-family: var(--font-display); color: var(--text-primary);
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  flex-shrink: 0; width: 24px; height: 24px; position: relative;
  transition: transform 0.3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; background: var(--accent); border-radius: 2px;
}
.faq-icon::before { top: 50%; left: 4px; right: 4px; height: 2px; transform: translateY(-50%); }
.faq-icon::after { left: 50%; top: 4px; bottom: 4px; width: 2px; transform: translateX(-50%); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 28px;
}
.faq-item.open .faq-answer { max-height: 400px; padding: 0 28px 24px; }
.faq-answer p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ============ 最终 CTA 区 ============ */
.final-cta {
  padding: 120px 0; text-align: center; position: relative; overflow: hidden;
}
.final-cta-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 50%, var(--accent-glow), transparent 70%);
  pointer-events: none;
}
.final-cta-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.final-cta h2 {
  font-family: var(--font-display); font-size: clamp(30px, 5vw, 52px);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 20px;
}
.final-cta h2 .highlight { color: var(--accent); }
.final-cta p { font-size: 18px; color: var(--text-secondary); margin-bottom: 40px; line-height: 1.7; }
.final-cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============ Footer ============ */
.footer {
  padding: 60px 0 40px; border-top: 1px solid var(--border);
  background: var(--bg-primary);
}
.footer-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 32px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 40px;
}
.footer-brand { max-width: 320px; }
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.footer-links { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h4 {
  font-family: var(--font-display); font-size: 13px; font-weight: 600;
  color: var(--text-primary); margin-bottom: 16px; text-transform: uppercase;
  letter-spacing: 0.1em;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13px; color: var(--text-muted); transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--container); margin: 40px auto 0; padding: 24px 32px 0;
  border-top: 1px solid var(--border); display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 12px; color: var(--text-muted); transition: color 0.2s; }
.footer-bottom-links a:hover { color: var(--text-secondary); }

/* ============ 滚动渐入动画 ============ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============ 响应式 ============ */
@media (max-width: 1180px) {
  .nav-link { padding: 8px 10px; font-size: 13px; }
}

@media (max-width: 1024px) {
  .rag-layout, .network-layout { grid-template-columns: 1fr; gap: 48px; }
  .rag-visual { max-width: 360px; }
  .network-visual { height: 320px; max-width: 400px; margin: 0 auto; }
  .features-grid { grid-template-columns: 1fr; }
  .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .container { padding: 0 20px; }
  .section { padding: 80px 0; }
  .nav-inner { padding: 0 20px; }
  .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .hero-content { padding: 72px 20px 96px; }
  .hero-stats { gap: 24px; padding-top: 32px; }
  .hero-stat-num { font-size: 28px; }
  .pain-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 32px 24px; }
  .rag-steps { gap: 12px; }
  .rag-step { padding: 16px; gap: 14px; }
  .agent-demo-body { padding: 20px; }
  .agent-result-grid { grid-template-columns: repeat(2, 1fr); }
  .chat-msg { max-width: 95%; }
  .pricing-grid { grid-template-columns: 1fr; gap: 24px; }
  .price-card { padding: 36px 28px; }
  .faq-question { padding: 18px 20px; font-size: 15px; }
  .faq-item.open .faq-answer { padding: 0 20px 20px; }
  .final-cta { padding: 80px 0; }
  .footer-inner { padding: 0 20px; gap: 32px; }
  .footer-links { gap: 32px; }
  .footer-bottom { padding: 24px 20px 0; flex-direction: column; text-align: center; }
  .agent-input-bar { padding: 16px; flex-direction: column; }
  .agent-input-bar .btn { width: 100%; }
  .case-grid, .news-grid, .process-grid, .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 24px; }
  .final-cta-actions { flex-direction: column; }
  .final-cta-actions .btn { width: 100%; }
  .case-metric { font-size: 28px; }
}

/* 尊重减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}