/* ===== 基础重置与变量 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #FF7A00;
  --primary-dark: #CC6200;
  --primary-light: #FFB347;
  --accent: #FF7A00;
  --dark: #1d1d1f;
  --dark2: #111827;
  --text: #1d1d1f;
  --text-light: #6e6e73;
  --border: #e5e7eb;
  --bg-light: #f5f5f7;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }
body { color: var(--text); background: var(--white); overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
svg { display: inline-block; vertical-align: middle; }
.pc-only { display: inline; }

/* ===== 容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: var(--white);
  padding: 12px 28px; border-radius: 8px;
  font-weight: 600; font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid transparent; cursor: pointer;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--primary);
  padding: 12px 28px; border-radius: 8px;
  font-weight: 600; font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid var(--primary); cursor: pointer;
}
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }

.btn-white {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); color: var(--primary);
  padding: 14px 32px; border-radius: 8px;
  font-weight: 700; font-size: 1rem;
  transition: var(--transition); cursor: pointer;
  border: 2px solid transparent;
}
.btn-white:hover { background: #f0f7ff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

.btn-outline-white {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--white);
  padding: 14px 32px; border-radius: 8px;
  font-weight: 700; font-size: 1rem;
  transition: var(--transition); cursor: pointer;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); }

.btn-lg { padding: 16px 40px; font-size: 1.05rem; border-radius: 10px; }
.btn-block { width: 100%; justify-content: center; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226,232,240,0.8);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}
.nav-inner {
  display: flex; align-items: center; gap: 32px;
  height: 72px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.2rem; color: var(--dark);
  white-space: nowrap; flex-shrink: 0;
}
.logo-icon { color: var(--primary); font-size: 1.4rem; }
.logo-text { color: var(--dark); }

.nav-links {
  display: flex; align-items: center; gap: 4px;
  flex: 1;
}
.nav-link {
  padding: 8px 16px; border-radius: 8px;
  font-weight: 500; font-size: 0.95rem; color: var(--text);
  transition: var(--transition); position: relative;
}
.nav-link::after {
  content: ''; position: absolute; bottom: 4px; left: 50%; right: 50%;
  height: 2px; background: var(--primary); border-radius: 2px;
  transition: var(--transition);
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after,
.nav-link.active::after { left: 16px; right: 16px; }
.nav-link.active { color: var(--primary); }

.nav-cta { margin-left: auto; }

.menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
  margin-left: auto;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--dark); border-radius: 2px; transition: var(--transition);
}

.mobile-menu {
  display: none; flex-direction: column; padding: 12px 24px 20px;
  border-top: 1px solid var(--border);
}
.mobile-link {
  padding: 12px 0; font-weight: 500; color: var(--text);
  border-bottom: 1px solid var(--border); transition: var(--transition);
}
.mobile-link:last-child { border-bottom: none; }
.mobile-link:hover { color: var(--primary); padding-left: 8px; }

/* ===== Hero 区域 ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #1d1d1f 0%, #4b5563 40%, #6b7280 100%);
  padding-top: 72px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-shape {
  position: absolute; border-radius: 50%;
  opacity: 0.08; animation: float 8s ease-in-out infinite;
}
.shape1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #9ca3af, transparent);
  top: -200px; right: -100px;
}
.shape2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #6b7280, transparent);
  bottom: -100px; left: -100px;
  animation-delay: -3s;
}
.shape3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #4b5563, transparent);
  top: 50%; left: 50%; transform: translate(-50%,-50%);
  animation-delay: -5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative; z-index: 1;
  padding: 80px 0;
  max-width: 760px;
}
.hero-badge {
  display: inline-block;
  background: rgba(107,114,128,0.15); color: #9ca3af;
  border: 1px solid rgba(107,114,128,0.3);
  padding: 6px 18px; border-radius: 100px;
  font-size: 0.85rem; font-weight: 500;
  margin-bottom: 28px; letter-spacing: 0.5px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700; line-height: 1.2;
  color: var(--white); margin-bottom: 24px;
}
.text-accent { color: #9ca3af; }
.hero-desc {
  font-size: 1.1rem; line-height: 1.8; color: rgba(255,255,255,0.7);
  margin-bottom: 40px; max-width: 620px;
}
.hero-actions {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap; margin-bottom: 64px;
}
.hero-stats {
  display: flex; align-items: center; gap: 0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px; padding: 24px 32px;
  width: fit-content; backdrop-filter: blur(8px);
}
.stat-item { text-align: center; padding: 0 28px; }
.stat-num {
  display: block; font-size: 2rem; font-weight: 700;
  color: var(--white); line-height: 1;
}
.stat-plus { font-size: 1.2rem; color: #9ca3af; }
.stat-label {
  display: block; font-size: 0.8rem; color: rgba(255,255,255,0.5);
  margin-top: 6px; letter-spacing: 0.5px;
}
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.15); flex-shrink: 0; }

.hero-scroll-hint {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px; z-index: 1;
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.4));
  animation: scrollDown 2s ease-in-out infinite;
}
.scroll-text { font-size: 0.7rem; color: rgba(255,255,255,0.4); letter-spacing: 2px; }
@keyframes scrollDown {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.3); }
}

/* ===== Section 通用 ===== */
.section { padding: 96px 0; }
.section-light { background: var(--bg-light); }
.section-dark { background: var(--dark2); }

.section-header { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-header-light { text-align: center; max-width: 640px; margin: 0 auto 64px; }

.section-tag {
  display: inline-block;
  color: var(--primary); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
  background: rgba(107,114,128,0.08); padding: 4px 14px;
  border-radius: 100px; margin-bottom: 16px;
}
.section-tag-light {
  background: rgba(107,114,128,0.15); color: #9ca3af;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700;
  color: var(--dark); line-height: 1.3; margin-bottom: 16px;
}
.section-title.text-left { text-align: left; }
.text-white { color: var(--white) !important; }
.text-gray { color: rgba(255,255,255,0.5) !important; }
.section-desc { color: var(--text-light); line-height: 1.8; }

/* ===== 核心优势 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 32px; border: 1px solid var(--border);
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 24px; height: 24px; color: white; }
.feature-title { font-size: 1.1rem; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.feature-desc { color: var(--text-light); line-height: 1.7; font-size: 0.92rem; }

/* ===== 服务预览 ===== */
.services-preview-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  margin-bottom: 48px;
}
.service-preview-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg); padding: 36px;
  transition: var(--transition);
}
.service-preview-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(107,114,128,0.4);
  transform: translateY(-4px);
}
.sp-num {
  font-size: 3rem; font-weight: 800; color: rgba(107,114,128,0.25);
  line-height: 1; margin-bottom: 16px;
}
.sp-title { font-size: 1.2rem; font-weight: 700; color: var(--white); margin-bottom: 12px; }
.sp-desc { color: rgba(255,255,255,0.55); line-height: 1.7; font-size: 0.92rem; margin-bottom: 20px; }
.sp-link {
  color: #9ca3af; font-weight: 600; font-size: 0.9rem;
  transition: var(--transition); display: inline-flex; align-items: center; gap: 4px;
}
.sp-link:hover { gap: 8px; }
.services-cta { text-align: center; }

/* ===== 数据成就 ===== */
.section-accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}
.achieve-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  text-align: center;
}
.achieve-item {
  padding: 40px 20px;
  border-right: 1px solid rgba(255,255,255,0.2);
  position: relative;
}
.achieve-item:last-child { border-right: none; }
.achieve-num {
  font-size: 3rem; font-weight: 800; color: var(--white);
  line-height: 1; display: inline;
}
.achieve-suffix { display: inline; font-size: 1.5rem; font-weight: 700; color: rgba(255,255,255,0.8); }
.achieve-label {
  display: block; font-size: 0.88rem; color: rgba(255,255,255,0.65);
  margin-top: 8px; letter-spacing: 1px;
}

/* ===== 客户评价 ===== */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 32px; border: 1px solid var(--border);
  transition: var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.t-stars { color: #f59e0b; font-size: 1.1rem; margin-bottom: 16px; letter-spacing: 2px; }
.t-content {
  color: var(--text); line-height: 1.8; font-size: 0.95rem;
  font-style: italic; margin-bottom: 24px;
}
.t-author { display: flex; align-items: center; gap: 14px; }
.t-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 1rem; flex-shrink: 0;
}
.t-name { font-weight: 600; color: var(--dark); font-size: 0.95rem; }
.t-company { color: var(--text-light); font-size: 0.82rem; margin-top: 2px; }

/* ===== CTA 区域 ===== */
.cta-section { background: var(--bg-light); }
.cta-box {
  background: linear-gradient(135deg, #6b7280 0%, #374151 100%);
  border-radius: 24px; padding: 72px 64px;
  text-align: center; position: relative; overflow: hidden;
}
.cta-bg-shape {
  position: absolute; top: -60px; right: -60px;
  width: 300px; height: 300px; border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-content { position: relative; z-index: 1; }
.cta-title { font-size: 2.2rem; font-weight: 700; color: white; margin-bottom: 16px; }
.cta-desc { color: rgba(255,255,255,0.75); font-size: 1.05rem; margin-bottom: 40px; }
.cta-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.footer { background: var(--dark); color: rgba(255,255,255,0.6); padding-top: 72px; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px;
  padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.2rem; color: white;
  margin-bottom: 16px;
}
.footer-tagline { font-size: 0.88rem; line-height: 1.7; max-width: 260px; margin-bottom: 24px; }
.footer-social { display: flex; gap: 12px; }
.social-link {
  width: 36px; height: 36px; border-radius: 8px;
  background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.social-link svg { width: 16px; height: 16px; }
.social-link:hover { background: var(--primary); color: white; }

.footer-links-title { color: white; font-weight: 600; margin-bottom: 20px; font-size: 0.92rem; letter-spacing: 0.5px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.88rem; transition: var(--transition); }
.footer-links a:hover { color: white; padding-left: 4px; }

.footer-contact li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.88rem; margin-bottom: 12px;
}
.footer-contact svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 2px; }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 0; font-size: 0.82rem;
}
.footer-legal { display: flex; align-items: center; gap: 12px; }
.footer-legal a { transition: var(--transition); }
.footer-legal a:hover { color: white; }
.footer-legal span { opacity: 0.3; }
.footer-copyright { opacity: 0.5; }

/* ===== 页面 Banner ===== */
.page-banner {
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #1d1d1f 0%, #4b5563 60%, #6b7280 100%);
  position: relative; overflow: hidden;
}
.page-banner-bg { position: absolute; inset: 0; pointer-events: none; }
.page-banner-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.5); font-size: 0.88rem;
  margin-bottom: 20px;
}
.page-banner-breadcrumb a { transition: var(--transition); }
.page-banner-breadcrumb a:hover { color: white; }
.page-banner-breadcrumb span { opacity: 0.4; }
.page-banner-title {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; color: white;
  margin-bottom: 16px;
}
.page-banner-desc { color: rgba(255,255,255,0.6); font-size: 1.05rem; }

/* ===== 关于我们 ===== */
.about-intro {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start;
}
.about-intro-text .section-tag { margin-bottom: 12px; }
.about-para { color: var(--text); line-height: 1.85; margin-bottom: 16px; font-size: 0.95rem; }
.about-highlights { margin-top: 28px; display: flex; flex-direction: column; gap: 12px; }
.highlight-item {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); font-size: 0.9rem;
}
.highlight-item svg { width: 16px; height: 16px; color: var(--primary); flex-shrink: 0; }

.about-intro-visual {}
.about-visual-card {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 20px; padding: 40px; text-align: center;
  margin-bottom: 16px;
}
.visual-big-num {
  font-size: 4.5rem; font-weight: 800; color: white; line-height: 1;
}
.visual-big-num span { font-size: 2.5rem; }
.visual-label { color: rgba(255,255,255,0.75); font-size: 1rem; margin-top: 8px; }

.about-visual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.visual-small-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px;
  padding: 24px; text-align: center; transition: var(--transition);
}
.visual-small-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.vsn { font-size: 1.8rem; font-weight: 800; color: var(--primary); line-height: 1; }
.vsn span { font-size: 1.1rem; }
.vsl { font-size: 0.8rem; color: var(--text-light); margin-top: 4px; }

/* ===== 使命愿景 ===== */
.mvv-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.mvv-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px; padding: 40px; text-align: center; transition: var(--transition);
}
.mvv-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.mvv-card-featured {
  background: linear-gradient(135deg, rgba(107,114,128,0.3), rgba(75,85,99,0.3));
  border-color: rgba(107,114,128,0.4);
}
.mvv-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,255,255,0.1); margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
}
.mvv-icon svg { width: 26px; height: 26px; color: #9ca3af; }
.mvv-title { font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 14px; }
.mvv-desc { color: rgba(255,255,255,0.6); line-height: 1.75; font-size: 0.92rem; }

/* ===== 发展历程 Timeline ===== */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px; background: var(--border); transform: translateX(-50%);
}
.timeline-item {
  display: flex; align-items: flex-start; margin-bottom: 48px; gap: 48px;
  position: relative;
}
.timeline-left { flex-direction: row-reverse; text-align: right; }
.timeline-right { flex-direction: row; text-align: left; }

.timeline-dot {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--primary); border: 3px solid white;
  box-shadow: 0 0 0 3px var(--primary);
  position: absolute; left: 50%; top: 8px; transform: translateX(-50%);
  z-index: 1; flex-shrink: 0;
}
.timeline-content {
  flex: 1; background: var(--white); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px 28px; transition: var(--transition);
}
.timeline-content:hover { box-shadow: var(--shadow); border-color: var(--primary); }
.timeline-year { font-size: 0.8rem; font-weight: 700; color: var(--primary); letter-spacing: 1px; margin-bottom: 8px; }
.timeline-title { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.timeline-desc { font-size: 0.88rem; color: var(--text-light); line-height: 1.7; }

/* ===== 团队 ===== */
.team-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.team-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 20px;
  padding: 32px 24px; text-align: center; transition: var(--transition);
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.team-avatar {
  width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
}
.team-avatar span { color: white; font-weight: 700; font-size: 1.8rem; }
.team-name { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.team-role { font-size: 0.82rem; color: var(--primary); font-weight: 600; margin-bottom: 12px; }
.team-bio { font-size: 0.85rem; color: var(--text-light); line-height: 1.7; }

/* ===== 服务页 ===== */
.services-main-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.service-main-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: 20px; padding: 32px; transition: var(--transition);
  position: relative; overflow: hidden;
}
.service-main-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-main-card-featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 12px 48px rgba(0,0,0,0.08);
}
.smc-badge {
  position: absolute; top: 16px; right: 16px;
  background: var(--primary); color: white;
  font-size: 0.72rem; font-weight: 700; padding: 3px 10px;
  border-radius: 100px; letter-spacing: 0.5px;
}
.smc-header { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
.smc-icon {
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.smc-icon svg { width: 22px; height: 22px; color: white; }
.smc-title { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.smc-tag {
  font-size: 0.72rem; color: var(--primary); font-weight: 600;
  background: rgba(107,114,128,0.08); padding: 2px 8px; border-radius: 100px;
}
.smc-desc { color: var(--text-light); line-height: 1.7; font-size: 0.9rem; margin-bottom: 20px; }
.smc-features { margin-bottom: 24px; }
.smc-features li {
  color: var(--text); font-size: 0.88rem; padding: 6px 0;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.smc-features li::before { content: '·'; color: var(--primary); font-weight: 700; font-size: 1.2rem; }
.smc-features li:last-child { border-bottom: none; }
.smc-cta { color: var(--primary); font-weight: 600; font-size: 0.9rem; transition: var(--transition); display: inline-block; }
.smc-cta:hover { letter-spacing: 0.5px; }
.smc-cta-featured {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary); color: white;
  padding: 10px 24px; border-radius: 8px; width: 100%; text-align: center;
}
.smc-cta-featured:hover { background: var(--primary-dark); }

/* ===== 定价 ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; align-items: start; }
.pricing-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px; padding: 36px; transition: var(--transition);
}
.pricing-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.pricing-card-featured {
  background: linear-gradient(160deg, #6b7280 0%, #374151 100%);
  border-color: transparent; position: relative;
}
.pricing-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: #4b5563; color: white; font-size: 0.78rem; font-weight: 700;
  padding: 4px 16px; border-radius: 100px; letter-spacing: 0.5px;
}
.pricing-name { font-size: 0.9rem; font-weight: 600; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.pricing-card-featured .pricing-name { color: rgba(255,255,255,0.8); }
.pricing-price {
  font-size: 1.5rem; font-weight: 800; color: white; margin-bottom: 8px; line-height: 1;
}
.pricing-price span { font-size: 2.5rem; }
.pricing-price small { font-size: 0.85rem; font-weight: 400; color: rgba(255,255,255,0.5); }
.pricing-desc { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-bottom: 24px; }
.pricing-features { margin-bottom: 28px; }
.pricing-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.88rem; color: rgba(255,255,255,0.7);
  padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.07);
}
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li.disabled { color: rgba(255,255,255,0.3); }
.check { color: #4ade80; font-weight: 700; }

.btn-outline { color: var(--white); border-color: rgba(255,255,255,0.3); }
.btn-outline:hover { background: rgba(255,255,255,0.1); color: white; }
.btn-white-featured {
  display: inline-flex; align-items: center; justify-content: center;
  background: white; color: var(--primary);
  padding: 14px 28px; border-radius: 8px; font-weight: 700;
  width: 100%; transition: var(--transition); border: none; cursor: pointer;
}
.btn-white-featured:hover { background: #f0f7ff; transform: translateY(-2px); }

/* ===== 服务流程 ===== */
.process-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; position: relative; }
.process-steps::before {
  content: ''; position: absolute; top: 32px; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 0;
}
.process-step { text-align: center; padding: 0 20px; position: relative; z-index: 1; }
.ps-circle {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white; font-weight: 800; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; position: relative; z-index: 2;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.ps-title { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.ps-desc { color: var(--text-light); font-size: 0.88rem; line-height: 1.7; }
.ps-line, .ps-line-none { display: none; }

/* ===== 联系我们 ===== */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
.contact-info-title { font-size: 1.6rem; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.contact-info-desc { color: var(--text-light); line-height: 1.8; margin-bottom: 36px; }
.contact-items { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; }
.ci-icon {
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.ci-icon svg { width: 20px; height: 20px; color: white; }
.ci-label { font-size: 0.78rem; color: var(--text-light); letter-spacing: 0.5px; margin-bottom: 4px; }
.ci-value { font-size: 0.95rem; font-weight: 600; color: var(--dark); margin-bottom: 2px; }
.ci-note { font-size: 0.78rem; color: var(--text-light); }

.contact-map {
  border-radius: 16px; overflow: hidden; border: 1px solid var(--border);
  background: var(--bg-light);
}
.map-placeholder {
  height: 200px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px;
  color: var(--text-light); background: linear-gradient(135deg, #f0f4f8, #e8eef7);
}
.map-placeholder svg { width: 40px; height: 40px; color: var(--primary); }
.map-placeholder p { font-size: 0.88rem; }

.contact-form-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: 24px; padding: 40px; box-shadow: var(--shadow);
}
.form-title { font-size: 1.4rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.form-desc { color: var(--text-light); font-size: 0.9rem; margin-bottom: 28px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-label {
  display: block; font-size: 0.88rem; font-weight: 600; color: var(--dark);
  margin-bottom: 8px;
}
.required { color: #ef4444; }
.form-input {
  width: 100%; padding: 12px 16px; border-radius: 10px;
  border: 1.5px solid var(--border); background: var(--bg-light);
  font-size: 0.92rem; font-family: inherit; color: var(--dark);
  transition: var(--transition); outline: none;
}
.form-input:focus { border-color: var(--primary); background: white; box-shadow: 0 0 0 3px rgba(107,114,128,0.1); }
.form-select { appearance: none; cursor: pointer; }
.form-textarea { resize: vertical; min-height: 120px; }

.btn-submit {
  width: 100%; padding: 14px 28px; font-size: 1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  cursor: pointer; border: none;
}
.btn-submit .btn-icon { width: 18px; height: 18px; }

.form-success {
  text-align: center; padding: 48px 24px;
}
.success-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, #4ade80, #22c55e);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.success-icon svg { width: 28px; height: 28px; color: white; }
.form-success h3 { font-size: 1.3rem; color: var(--dark); margin-bottom: 8px; }
.form-success p { color: var(--text-light); }

/* ===== FAQ ===== */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.faq-item {
  background: var(--white); border: 1.5px solid var(--border); border-radius: 12px;
  overflow: hidden; cursor: pointer; transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-item.open { border-color: var(--primary); box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; font-weight: 600; color: var(--dark); font-size: 0.95rem;
}
.faq-arrow {
  font-size: 1.4rem; color: var(--primary); transition: var(--transition);
  flex-shrink: 0; margin-left: 12px;
}
.faq-item.open .faq-arrow { transform: rotate(45deg); }
.faq-a {
  padding: 0 24px; max-height: 0; overflow: hidden;
  color: var(--text-light); font-size: 0.9rem; line-height: 1.8;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-a { max-height: 200px; padding: 0 24px 20px; }

/* ===== 滚动动画 ===== */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-main-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .about-intro { gap: 48px; }
}

@media (max-width: 768px) {
  .pc-only { display: none; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .mobile-menu.open { display: flex; }

  .section { padding: 64px 0; }
  .hero-content { padding: 60px 0; }

  .features-grid { grid-template-columns: 1fr; }
  .services-preview-grid { grid-template-columns: 1fr; }
  .achieve-grid { grid-template-columns: repeat(2, 1fr); }
  .achieve-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.15); }
  .achieve-item:nth-child(2n) { border-right: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .services-main-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .process-steps { grid-template-columns: 1fr 1fr; }
  .process-steps::before { display: none; }
  .mvv-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .timeline::before { left: 20px; }
  .timeline-item { flex-direction: column !important; padding-left: 48px; text-align: left !important; gap: 8px; }
  .timeline-dot { left: 20px; transform: none; }
  .faq-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .cta-box { padding: 48px 28px; }
  .cta-title { font-size: 1.6rem; }
  .hero-stats { flex-wrap: wrap; gap: 0; }
  .stat-divider { display: none; }
  .stat-item { padding: 12px 20px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
}