/* service-detail.css - 服务详情页通用样式 | 蓝紫配色 统一规范 | UTF-8 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&display=swap');

:root {
  /* 主色调 */
  --primary: #4f7df9;
  --primary-dark: #3a5fd4;
  --primary-light: #e8efff;
  --purple: #7c3aed;
  --purple-light: #f0eaff;
  --orange: #f97316;
  --orange-light: #fff3e6;
  --green: #22c55e;
  --green-light: #e6f9ed;
  --cyan: #06b6d4;
  --cyan-light: rgba(6,182,212,.1);
  --pink: #ec4899;
  --pink-light: #fce7f3;
  
  /* 背景 */
  --bg: #f5f7fb;
  --bg-white: #ffffff;
  --bg-alt: #eef1f8;
  
  /* 文字 */
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-tertiary: #718096;
  
  /* 其他 */
  --border: rgba(79,125,249,.1);
  --shadow: 0 4px 24px rgba(79,125,249,.1);
  --shadow-lg: 0 20px 60px rgba(79,125,249,.15);
  --radius: 20px;
  --radius-sm: 12px;
  
  /* 统一间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --spacing-xxl: 80px;
  
  /* 统一字体大小 */
  --font-xs: 12px;
  --font-sm: 14px;
  --font-base: 16px;
  --font-lg: 18px;
  --font-xl: 20px;
  --font-2xl: 24px;
  --font-3xl: 30px;
  --font-4xl: 36px;
  --font-5xl: 42px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
  font-family: 'Noto Sans SC', system-ui, sans-serif; 
  background: var(--bg); 
  color: var(--text-primary); 
  line-height: 1.7; 
  font-size: var(--font-base);
  overflow-x: hidden; 
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-lg); }

/* 进度条 */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg,var(--primary),var(--purple));
  z-index: 9999; transition: width .1s;
}

/* 动画 */
@keyframes fadeUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.fade-up { opacity: 0; transform: translateY(30px); transition: all .6s cubic-bezier(.4,0,.2,1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up.delay-1{transition-delay:.1s} .fade-up.delay-2{transition-delay:.2s}
.fade-up.delay-3{transition-delay:.3s} .fade-up.delay-4{transition-delay:.4s}

/* ===== 导航 ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 var(--spacing-lg); height: 70px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all .3s;
}
.nav.scrolled { background: rgba(255,255,255,.98); border-bottom-color: var(--border); box-shadow: 0 2px 20px rgba(79,125,249,.08); }
.nav-logo img { height: 38px; }
.nav-links { display: flex; gap: var(--spacing-lg); }
.nav-links a { 
  color: var(--text-secondary); 
  font-size: var(--font-base); 
  font-weight: 500; 
  transition: color .3s; 
  position: relative; 
  padding: 4px 0; 
}
.nav-links a::after { 
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; 
  background: var(--primary); border-radius: 2px; transition: width .3s; 
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { 
  padding: 10px 28px; border-radius: 50px; background: var(--primary); 
  color: #fff; font-size: var(--font-sm); font-weight: 600; 
  transition: all .3s; box-shadow: 0 4px 15px rgba(79,125,249,.3); 
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(79,125,249,.4); }
.nav-mb { display: none; background: none; border: none; font-size: var(--font-2xl); color: var(--text-primary); cursor: pointer; }
.nav-mb-mask { display: none; position: fixed; inset: 0; z-index: 999; background: rgba(0,0,0,.4); }
.nav-mb-menu { 
  display: none; position: fixed; top: 70px; left: 0; right: 0; z-index: 1001; 
  background: #fff; padding: var(--spacing-md); border-bottom: 1px solid var(--border); 
  box-shadow: 0 8px 30px rgba(0,0,0,.1); flex-direction: column; gap: 4px; 
}
.nav-mb-menu.open { display: flex; }
.nav-mb-menu a { display: block; padding: 12px 0; color: var(--text-secondary); font-size: var(--font-lg); border-bottom: 1px solid #f1f1f1; }
.nav-mb-menu a:last-child { border: none; color: var(--primary); font-weight: 600; }

/* ===== Banner ===== */
.detail-banner {
  position: relative; overflow: hidden; min-height: 560px;
  margin-top: 70px;
  display: flex; align-items: center;
}
.detail-banner-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.detail-banner::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,.88) 0%, rgba(79,125,249,.75) 50%, rgba(124,58,237,.6) 100%);
  z-index: 1;
}
.detail-banner::after {
  content: ''; position: absolute; top: -30%; right: -5%;
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(79,125,249,.12) 0%, transparent 70%);
  z-index: 2;
}
.banner-content {
  position: relative; z-index: 3;
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); align-items: center;
  padding: var(--spacing-xl) 0;
}
.banner-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 100px;
  background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.25);
  font-size: var(--font-sm); color: rgba(255,255,255,.9); font-weight: 500;
  margin-bottom: var(--spacing-md); backdrop-filter: blur(8px);
}
.banner-title {
  font-size: var(--font-5xl); font-weight: 900; color: #fff; 
  line-height: 1.15; margin-bottom: var(--spacing-sm); 
  text-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.banner-title span { color: var(--orange); }
.banner-desc {
  font-size: var(--font-lg); color: rgba(255,255,255,.85); 
  line-height: 1.8; margin-bottom: var(--spacing-lg);
}
.banner-btns { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  background: var(--primary); color: #fff; font-size: var(--font-base); font-weight: 700;
  transition: all .3s; box-shadow: 0 8px 30px rgba(79,125,249,.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(79,125,249,.5); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.15); color: #fff; font-size: var(--font-base); font-weight: 600;
  border: 1px solid rgba(255,255,255,.3); backdrop-filter: blur(8px);
  transition: all .3s;
}
.btn-secondary:hover { background: rgba(255,255,255,.25); transform: translateY(-3px); }

.banner-visual { position: relative; }
.banner-img {
  border-radius: var(--radius); box-shadow: 0 30px 80px rgba(0,0,0,.4);
  animation: float 6s ease-in-out infinite;
  width: 100%; height: 340px; object-fit: cover;
}
.banner-img-card {
  position: absolute; bottom: -20px; left: -30px;
  background: rgba(255,255,255,.95); backdrop-filter: blur(10px);
  border-radius: var(--radius-sm); padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: var(--spacing-sm);
}
.banner-img-card i { font-size: 28px; color: var(--primary); }
.banner-img-card .info strong { display: block; font-size: var(--font-lg); color: var(--text-primary); }
.banner-img-card .info span { font-size: var(--font-xs); color: var(--text-tertiary); }

/* ===== Section通用 ===== */
.section { padding: var(--spacing-xxl) 0; }
.section-alt { background: var(--bg-white); }
.section-hd { text-align: center; margin-bottom: var(--spacing-xl); }
.section-hd h2 { font-size: var(--font-4xl); font-weight: 800; color: var(--text-primary); margin-bottom: var(--spacing-sm); }
.section-hd h2 span { color: var(--primary); }
.section-hd p { font-size: var(--font-lg); color: var(--text-tertiary); }

/* ===== 数据值 ===== */
.detail-value { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); margin-top: var(--spacing-lg); }
.value-item { text-align: center; padding: var(--spacing-md); background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); transition: all .3s; }
.value-item:hover { background: var(--bg-white); box-shadow: var(--shadow); transform: translateY(-4px); }
.value-num { font-size: var(--font-4xl); font-weight: 900; background: linear-gradient(135deg, var(--primary), var(--purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.value-label { font-size: var(--font-sm); color: var(--text-tertiary); margin-top: 6px; }

/* ===== 特色卡片 ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.feature-card {
  padding: var(--spacing-lg); border-radius: var(--radius);
  background: var(--bg); border: 1px solid var(--border);
  transition: all .4s cubic-bezier(.4,0,.2,1); text-align: center;
}
.feature-card:hover {
  background: var(--bg-white); box-shadow: var(--shadow-lg);
  border-color: transparent; transform: translateY(-8px);
}
.feature-icon {
  width: 72px; height: 72px; border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px; margin: 0 auto var(--spacing-sm);
  transition: transform .3s;
}
.feature-card:hover .feature-icon { transform: scale(1.1); }
.feature-card:nth-child(1) .feature-icon { background: var(--primary-light); color: var(--primary); }
.feature-card:nth-child(2) .feature-icon { background: var(--purple-light); color: var(--purple); }
.feature-card:nth-child(3) .feature-icon { background: var(--orange-light); color: var(--orange); }
.feature-card:nth-child(4) .feature-icon { background: var(--green-light); color: var(--green); }
.feature-card:nth-child(5) .feature-icon { background: var(--pink-light); color: var(--pink); }
.feature-card:nth-child(6) .feature-icon { background: var(--cyan-light); color: var(--cyan); }
.feature-card h3 { font-size: var(--font-xl); font-weight: 700; color: var(--text-primary); margin-bottom: var(--spacing-xs); }
.feature-card p { font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.7; }

/* ===== 功能模块 ===== */
.func-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-sm); }
.func-item {
  display: flex; align-items: center; gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md); border-radius: var(--radius-sm);
  background: var(--bg); border: 1px solid var(--border);
  transition: all .3s;
}
.func-item:hover { background: var(--bg-white); box-shadow: var(--shadow); border-color: transparent; transform: translateY(-2px); }
.func-item i { font-size: var(--font-xl); color: var(--primary); flex-shrink: 0; }
.func-item span { font-size: var(--font-sm); color: var(--text-secondary); }

/* ===== 行业场景 ===== */
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); }
.scene-card {
  border-radius: var(--radius); overflow: hidden;
  background: var(--bg-white); border: 1px solid var(--border);
  transition: all .4s cubic-bezier(.4,0,.2,1); cursor: default;
}
.scene-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.scene-card-img { height: 160px; overflow: hidden; }
.scene-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.scene-card:hover .scene-card-img img { transform: scale(1.08); }
.scene-card-body { padding: var(--spacing-sm); text-align: center; }
.scene-icon { font-size: 28px; margin-bottom: var(--spacing-xs); }
.scene-card:nth-child(1) .scene-icon { color: var(--primary); }
.scene-card:nth-child(2) .scene-icon { color: var(--purple); }
.scene-card:nth-child(3) .scene-icon { color: var(--orange); }
.scene-card:nth-child(4) .scene-icon { color: var(--green); }
.scene-card:nth-child(5) .scene-icon { color: var(--pink); }
.scene-card:nth-child(6) .scene-icon { color: var(--cyan); }
.scene-card:nth-child(7) .scene-icon { color: var(--primary); }
.scene-card:nth-child(8) .scene-icon { color: var(--purple); }
.scene-card h4 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.scene-card p { font-size: var(--font-xs); color: var(--text-tertiary); }

/* ===== 对比表 ===== */
.compare-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--bg-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.compare-table th { padding: var(--spacing-sm) var(--spacing-md); font-size: var(--font-base); font-weight: 700; text-align: left; background: var(--primary); color: #fff; }
.compare-table th:first-child { border-radius: var(--radius) 0 0 0; }
.compare-table th:last-child { border-radius: 0 var(--radius) 0 0; }
.compare-table td { padding: var(--spacing-sm) var(--spacing-md); font-size: var(--font-sm); color: var(--text-secondary); border-bottom: 1px solid var(--border); }
.compare-table tr:last-child td { border: none; }
.compare-table tr:hover td { background: var(--bg); }
.compare-table td:first-child { font-weight: 600; color: var(--text-primary); }
.compare-highlight { background: linear-gradient(135deg, var(--primary-light), var(--purple-light)); }
.compare-highlight td { color: var(--primary) !important; font-weight: 600 !important; }

/* ===== 流程 ===== */
.process-section { padding: var(--spacing-xxl) 0; background: var(--bg-white); position: relative; overflow: hidden; }
.process-section::before { content: ''; position: absolute; top: -100px; right: -100px; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(79,125,249,.05) 0%, transparent 70%); }
.process-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); position: relative; z-index: 1; }
.process-item { display: flex; gap: var(--spacing-md); padding: var(--spacing-md); border-radius: var(--radius); background: var(--bg); border: 1px solid var(--border); transition: all .3s; }
.process-item:hover { background: var(--bg-white); box-shadow: var(--shadow); transform: translateY(-4px); }
.process-num { 
  flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; 
  background: linear-gradient(135deg, var(--primary), var(--purple)); 
  color: #fff; font-size: var(--font-lg); font-weight: 800; 
  display: flex; align-items: center; justify-content: center; 
  box-shadow: 0 6px 20px rgba(79,125,249,.3); 
}
.process-content h4 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.process-content p { font-size: var(--font-xs); color: var(--text-tertiary); line-height: 1.6; }

/* ===== 价格 ===== */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.price-card {
  background: var(--bg-white); border-radius: var(--radius);
  padding: var(--spacing-lg); border: 2px solid var(--border);
  transition: all .4s cubic-bezier(.4,0,.2,1); position: relative;
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.price-card.featured {
  background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
  border-color: transparent; color: #fff;
}
.price-card.featured * { color: #fff; }
.price-card.featured .price-desc { color: rgba(255,255,255,.8); }
.price-card.featured .price-features li { color: rgba(255,255,255,.9); }
.price-card.featured .price-btn { background: #fff; color: var(--primary); }
.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  padding: 6px 20px; border-radius: 100px; font-size: var(--font-xs); font-weight: 700;
  background: var(--orange); color: #fff;
}
.price-name { font-size: var(--font-2xl); font-weight: 800; color: var(--text-primary); margin-bottom: 6px; }
.price-desc { font-size: var(--font-xs); color: var(--text-tertiary); margin-bottom: var(--spacing-sm); }
.price-value { font-size: var(--font-4xl); font-weight: 900; color: var(--orange); margin-bottom: 4px; line-height: 1; }
.price-card.featured .price-value { color: #fff; }
.price-unit { font-size: var(--font-xs); color: var(--text-tertiary); margin-bottom: var(--spacing-sm); }
.price-card.featured .price-unit { color: rgba(255,255,255,.7); }
.price-features { list-style: none; margin-bottom: var(--spacing-md); }
.price-features li { display: flex; align-items: center; gap: 10px; padding: 8px 0; font-size: var(--font-sm); color: var(--text-secondary); border-bottom: 1px solid rgba(0,0,0,.05); }
.price-card.featured .price-features li { border-bottom-color: rgba(255,255,255,.1); }
.price-features li:last-child { border: none; }
.price-features li i { color: var(--green); font-size: var(--font-base); flex-shrink: 0; }
.price-btn {
  display: block; width: 100%; padding: var(--spacing-sm); border-radius: var(--radius-sm);
  text-align: center; font-size: var(--font-base); font-weight: 700;
  background: var(--primary); color: #fff;
  transition: all .3s;
}
.price-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,125,249,.3); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-white); border-radius: var(--radius); margin-bottom: var(--spacing-sm); border: 1px solid var(--border); overflow: hidden; transition: all .3s; }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-q { 
  display: flex; align-items: center; justify-content: space-between; 
  padding: var(--spacing-sm) var(--spacing-md); cursor: pointer; 
  font-size: var(--font-base); font-weight: 600; color: var(--text-primary); gap: var(--spacing-sm); 
}
.faq-q i { font-size: var(--font-xl); color: var(--primary); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(45deg); }
.faq-a { padding: 0 var(--spacing-md) var(--spacing-sm); font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.8; display: none; }
.faq-item.open .faq-a { display: block; }

/* ===== CTA ===== */
.cta-section { padding: var(--spacing-xxl) 0; background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -200px; right: -200px; width: 600px; height: 600px; border-radius: 50%; background: rgba(255,255,255,.05); }
.cta-section::after { content: ''; position: absolute; bottom: -150px; left: -150px; width: 400px; height: 400px; border-radius: 50%; background: rgba(255,255,255,.05); }
.cta-inner { text-align: center; position: relative; z-index: 1; }
.cta-inner h2 { font-size: var(--font-4xl); font-weight: 900; color: #fff; margin-bottom: var(--spacing-sm); }
.cta-inner p { font-size: var(--font-lg); color: rgba(255,255,255,.85); margin-bottom: var(--spacing-lg); }
.cta-btns { display: flex; gap: var(--spacing-sm); justify-content: center; flex-wrap: wrap; }
.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; border-radius: var(--radius-sm);
  background: #fff; color: var(--primary); font-size: var(--font-base); font-weight: 700;
  transition: all .3s; box-shadow: 0 8px 30px rgba(0,0,0,.15);
}
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,.2); }
.btn-outline-white {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 36px; border-radius: var(--radius-sm);
  background: transparent; color: #fff; font-size: var(--font-base); font-weight: 600;
  border: 2px solid rgba(255,255,255,.4); transition: all .3s;
}
.btn-outline-white:hover { background: rgba(255,255,255,.15); border-color: #fff; }

/* ===== Footer ===== */
.footer { background: #1a1a2e; color: rgba(255,255,255,.6); padding: var(--spacing-xl) 0 0; }
.ft-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
.ft-brand img { height: 40px; margin-bottom: var(--spacing-xs); }
.ft-brand p { font-size: var(--font-sm); }
.ft-col h4 { color: #fff; font-size: var(--font-base); font-weight: 700; margin-bottom: var(--spacing-sm); }
.ft-col ul { list-style: none; }
.ft-col li { margin-bottom: 10px; }
.ft-col a { color: rgba(255,255,255,.55); font-size: var(--font-sm); transition: color .3s; }
.ft-col a:hover { color: #fff; }
.ft-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: var(--spacing-sm) 0; text-align: center; font-size: var(--font-sm); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .banner-content { grid-template-columns: 1fr; gap: var(--spacing-lg); text-align: center; }
  .banner-btns { justify-content: center; }
  .banner-visual { display: none; }
  .features-grid, .scene-grid, .process-list, .price-grid { grid-template-columns: repeat(2, 1fr); }
  .func-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-value { grid-template-columns: repeat(2, 1fr); }
  .ft-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root {
    --spacing-lg: 24px;
    --spacing-xl: 40px;
    --spacing-xxl: 56px;
    --font-4xl: 28px;
    --font-5xl: 32px;
  }
  .container { padding: 0 var(--spacing-md); }
  .nav { padding: 0 var(--spacing-md); }
  .nav-links, .nav-cta { display: none; }
  .nav-mb { display: block; }
  .banner-title { font-size: var(--font-3xl); }
  .banner-desc { font-size: var(--font-base); }
  .section { padding: var(--spacing-xl) 0; }
  .section-hd h2 { font-size: var(--font-2xl); }
  .features-grid, .func-grid, .scene-grid, .process-list, .price-grid, .detail-value { grid-template-columns: 1fr; }
  .ft-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .cta-inner h2 { font-size: var(--font-2xl); }
  .cta-btns { flex-direction: column; align-items: center; }
}