/* services.css - 服务列表页样式 | 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 {
  --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;
  --pink: #ec4899;
  --pink-light: #fce7f3;
  --bg: #f5f7fb;
  --bg-white: #ffffff;
  --bg-alt: #eef1f8;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-tertiary: #718096;
  --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;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --spacing-xxl: 80px;
  --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); }

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

@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 */
.page-banner { position: relative; overflow: hidden; margin-top: 70px; padding: var(--spacing-xxl) 0; background: linear-gradient(135deg, #1a1a2e 0%, #2d2d5a 50%, #3d3d8c 100%); }
.banner-shape { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; }
.banner-shape.shape-1 { width: 400px; height: 400px; background: var(--primary); top: -100px; right: -50px; }
.banner-shape.shape-2 { width: 300px; height: 300px; background: var(--purple); bottom: -80px; left: -50px; }
.banner-shape.shape-3 { width: 200px; height: 200px; background: var(--cyan); top: 50%; left: 30%; transform: translateY(-50%); }
.banner-inner { position: relative; z-index: 1; text-align: center; }
.banner-inner h1 { font-size: var(--font-5xl); font-weight: 900; color: #fff; margin-bottom: var(--spacing-sm); letter-spacing: 2px; }
.banner-inner p { font-size: var(--font-lg); color: rgba(255,255,255,.75); margin-bottom: var(--spacing-md); }
.banner-tags { display: flex; justify-content: center; gap: var(--spacing-sm); flex-wrap: wrap; }
.banner-tags a { padding: 10px 24px; border-radius: 50px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.9); font-size: var(--font-sm); font-weight: 500; transition: all .3s; backdrop-filter: blur(8px); }
.banner-tags a:hover { background: var(--primary); border-color: var(--primary); transform: translateY(-2px); }

/* 筛选 */
.services-filter { padding: var(--spacing-lg) 0; background: var(--bg-alt); }
.filter-tabs { display: flex; justify-content: center; gap: var(--spacing-sm); flex-wrap: wrap; }
.filter-btn { padding: 10px 24px; border-radius: 50px; border: none; background: var(--bg-white); color: var(--text-secondary); font-size: var(--font-sm); font-weight: 500; cursor: pointer; transition: all .3s; border: 1px solid var(--border); }
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 服务卡片 */
.services-list { padding: var(--spacing-xl) 0 var(--spacing-xxl); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.service-card { background: var(--bg-white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all .4s cubic-bezier(.4,0,.2,1); }
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-img { height: 200px; overflow: hidden; }
.service-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.service-card:hover .service-img img { transform: scale(1.08); }
.service-body { padding: var(--spacing-md); }
.service-tag { display: inline-block; padding: 4px 12px; border-radius: 100px; font-size: var(--font-xs); font-weight: 600; color: #fff; background: var(--primary); margin-bottom: 12px; }
.service-body h3 { font-size: var(--font-xl); font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.service-body p { font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.6; margin-bottom: var(--spacing-sm); }
.service-meta { display: flex; gap: var(--spacing-md); margin-bottom: var(--spacing-sm); font-size: var(--font-xs); color: var(--text-tertiary); }
.service-meta span { display: flex; align-items: center; gap: 4px; }
.service-link { display: inline-flex; align-items: center; gap: 6px; font-size: var(--font-sm); font-weight: 600; color: var(--primary); }
.service-link i { transition: transform .3s; }
.service-card:hover .service-link i { transform: translateX(4px); }

/* 流程 */
.process-section { padding: var(--spacing-xxl) 0; 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); }
.process-steps { display: flex; justify-content: space-between; position: relative; }
.process-steps::before { content: ''; position: absolute; top: 45px; left: 10%; right: 10%; height: 2px; background: linear-gradient(90deg,var(--primary),var(--purple)); }
.process-step { text-align: center; position: relative; z-index: 1; flex: 1; }
.step-num { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: #fff; font-size: var(--font-sm); font-weight: 700; display: flex; align-items: center; justify-content: center; }
.step-icon { width: 90px; height: 90px; margin: 20px auto 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--primary); display: flex; align-items: center; justify-content: center; font-size: 36px; color: var(--primary); transition: all .3s; }
.process-step:hover .step-icon { background: var(--primary); color: #fff; transform: scale(1.1); }
.process-step h4 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.process-step p { font-size: var(--font-sm); color: var(--text-tertiary); padding: 0 10px; }

/* 案例 */
.cases-section { padding: var(--spacing-xxl) 0; background: var(--bg-alt); }
.cases-scroll { display: flex; gap: var(--spacing-md); overflow-x: auto; padding-bottom: 10px; }
.cases-scroll::-webkit-scrollbar { height: 6px; }
.cases-scroll::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }
.case-card { min-width: 280px; flex-shrink: 0; background: var(--bg-white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all .3s; }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-img { height: 160px; }
.case-img img { width: 100%; height: 100%; object-fit: cover; }
.case-info { padding: var(--spacing-sm); }
.case-info h4 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.case-info p { font-size: var(--font-sm); color: var(--text-tertiary); margin-bottom: 8px; }
.case-tag { display: inline-block; padding: 3px 10px; border-radius: 100px; font-size: var(--font-xs); font-weight: 600; color: var(--primary); background: var(--primary-light); }

/* 为什么选择 */
.why-section { padding: var(--spacing-xxl) 0; background: var(--bg-white); }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.why-card { padding: var(--spacing-lg); border-radius: var(--radius); background: var(--bg); border: 1px solid var(--border); text-align: center; transition: all .3s; }
.why-card:hover { background: var(--bg-white); box-shadow: var(--shadow); transform: translateY(-4px); }
.why-icon { width: 70px; height: 70px; margin: 0 auto var(--spacing-md); border-radius: 50%; background: linear-gradient(135deg, var(--primary-light), var(--purple-light)); display: flex; align-items: center; justify-content: center; font-size: 32px; color: var(--primary); }
.why-card h4 { font-size: var(--font-lg); font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.why-card p { font-size: var(--font-sm); color: var(--text-tertiary); line-height: 1.6; }

/* CTA */
.cta-section { padding: var(--spacing-xxl) 0; background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%); }
.cta-inner { text-align: center; }
.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-md); 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; }

/* 响应式 */
@media (max-width: 1024px) {
  .services-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .ft-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { flex-wrap: wrap; gap: var(--spacing-md); }
  .process-steps::before { display: none; }
  .process-step { min-width: 30%; }
}
@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-inner h1 { font-size: var(--font-3xl); }
  .services-grid, .why-grid { grid-template-columns: 1fr; }
  .ft-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
  .cta-inner h2 { font-size: var(--font-3xl); }
  .cta-btns { flex-direction: column; align-items: center; }
}