/* ============================================================
   慧缘科技官网 - 全局样式
   沈阳洁慧缘科技有限公司
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --bg-main: #0a0e1a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --cyan: #00d4ff;
  --cyan-dim: rgba(0, 212, 255, 0.15);
  --purple: #7c3aed;
  --purple-dim: rgba(124, 58, 237, 0.15);
  --gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.08);
  --border-cyan: rgba(0, 212, 255, 0.25);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-main);
  color: #fff;
  overflow-x: hidden;
  line-height: 1.7;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: #0a0e1a; }
::-webkit-scrollbar-thumb { background: var(--gradient); border-radius: 3px; }

/* ---------- 粒子画布 ---------- */
#neural-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* ---------- 通用布局 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-py { padding: 96px 0; }
.section-py-sm { padding: 72px 0; }
.relative-z { position: relative; z-index: 1; }

/* ---------- 文字工具 ---------- */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-muted { color: var(--text-muted); }
.section-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  color: var(--cyan);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---------- 导航 ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 100;
  transition: all 0.3s ease;
  padding: 16px 0;
}
#navbar.scrolled {
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-cyan);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  box-shadow: 0 0 20px var(--cyan-dim);
  flex-shrink: 0;
}
.logo-text-main { font-size: 1.2rem; font-weight: 700; line-height: 1.2; }
.logo-text-sub { font-size: 0.65rem; color: var(--cyan); letter-spacing: 0.12em; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 0.9rem;
  color: #cbd5e1;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient);
  transition: width 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--cyan); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  padding: 8px 22px;
  border-radius: 50px;
  background: var(--gradient);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 15px var(--cyan-dim);
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,212,255,0.35); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%; left: 0;
  width: 100%;
  background: rgba(10, 14, 26, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-cyan);
  padding: 20px 24px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: #cbd5e1;
  transition: color 0.2s;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--cyan); }

/* ---------- 按钮 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 50px;
  background: var(--gradient);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.25);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 35px rgba(0, 212, 255, 0.4); }
.btn-primary:active { transform: translateY(-1px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 35px;
  border-radius: 50px;
  background: transparent;
  color: var(--cyan);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid var(--border-cyan);
  cursor: pointer;
  transition: all 0.3s;
}
.btn-outline:hover {
  background: var(--cyan-dim);
  border-color: var(--cyan);
  transform: translateY(-3px);
}
.btn-sm { padding: 8px 22px; font-size: 0.85rem; }

/* ---------- 玻璃卡片 ---------- */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.35s ease;
}
.glass-card:hover {
  border-color: var(--border-cyan);
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.1), inset 0 1px 0 rgba(0,212,255,0.1);
  transform: translateY(-6px);
}
.card-icon {
  width: 60px; height: 60px;
  border-radius: 14px;
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 18px;
  transition: all 0.3s;
}
.glass-card:hover .card-icon {
  background: rgba(0, 212, 255, 0.2);
  box-shadow: 0 0 20px var(--cyan-dim);
}

/* ---------- Hero ---------- */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 1;
  padding-top: 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0,212,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 100%, rgba(124,58,237,0.15) 0%, transparent 60%);
  z-index: 0;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 30px;
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 500;
  margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  /* 固定高度防止布局抖动 */
  min-height: calc(clamp(2.4rem, 6vw, 4.5rem) * 1.1);
}
.hero-slogan {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 14px;
  font-weight: 400;
}
.hero-desc {
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  color: #64748b;
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.9;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: #4b5563;
  font-size: 0.75rem;
  animation: bounce 2s ease-in-out infinite;
}
.scroll-arrow { width: 20px; height: 20px; border-right: 2px solid #00d4ff; border-bottom: 2px solid #00d4ff; transform: rotate(45deg); }

/* ---------- 数据带 ---------- */
.stats-belt {
  position: relative; z-index: 1;
  background: rgba(255,255,255,0.03);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.stat-unit { font-size: 1rem; font-weight: 600; color: var(--cyan); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }

/* ---------- 流程步骤 ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.process-grid::before {
  content: '';
  position: absolute;
  top: 36px; left: 10%; right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  z-index: 0;
}
.process-step { text-align: center; position: relative; z-index: 1; padding: 0 12px; }
.step-num {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
  box-shadow: 0 0 25px var(--cyan-dim);
}
.step-title { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; }
.step-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), var(--purple));
}
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-dot {
  position: absolute;
  left: -41px; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gradient);
  border: 3px solid var(--bg-main);
  box-shadow: 0 0 10px var(--cyan-dim);
}
.timeline-year {
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}
.timeline-text { font-size: 0.95rem; color: #cbd5e1; }

/* ---------- 案例卡片 ---------- */
.case-card { overflow: hidden; }
.case-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  color: var(--cyan);
  margin-bottom: 12px;
}
.case-metric {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: #86efac;
  margin-bottom: 6px;
}
.case-metric::before { content: '✅'; font-size: 0.7rem; }

/* ---------- 评价 ---------- */
.stars { color: #fbbf24; letter-spacing: 2px; font-size: 1rem; }
.quote-icon { font-size: 2rem; color: var(--cyan-dim); line-height: 1; margin-bottom: 12px; }

/* ---------- 底部CTA ---------- */
.cta-section {
  position: relative; z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,212,255,0.08) 0%, transparent 70%),
    rgba(255,255,255,0.02);
  border-top: 1px solid var(--border-cyan);
  border-bottom: 1px solid var(--border-cyan);
}

/* ---------- 页面Hero（内页用）----------*/
.page-hero {
  position: relative; z-index: 1;
  padding: 160px 0 80px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0,212,255,0.1) 0%, transparent 60%);
}
.page-hero-title { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; margin-bottom: 16px; }
.page-hero-desc { font-size: 1.1rem; color: var(--text-muted); max-width: 550px; margin: 0 auto; }

/* ---------- 服务Tab ---------- */
.service-block { margin-bottom: 48px; scroll-margin-top: 100px; }
.service-block-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.service-block-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.service-block-title { font-size: 1.5rem; font-weight: 700; }
.service-block-desc { color: var(--text-muted); font-size: 0.95rem; margin-top: 4px; }
.service-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.service-item {
  display: flex;
  gap: 14px;
  padding: 18px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.service-item:hover { border-color: var(--border-cyan); transform: translateY(-3px); }
.service-item-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.service-item-title { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.service-item-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 6px; color: #cbd5e1; }
.form-label .required { color: #f87171; margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: #fff;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.3s;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
.form-input::placeholder, .form-textarea::placeholder { color: #4b5563; }
.form-select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2300d4ff'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 16px; padding-right: 40px; }
.form-select option { background: #0a0e1a; }
.form-textarea { resize: vertical; min-height: 120px; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 10px; }
.checkbox-label { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 0.85rem; color: #cbd5e1; }
.checkbox-label input { accent-color: var(--cyan); width: 15px; height: 15px; }

/* ---------- Footer ---------- */
#footer {
  position: relative; z-index: 1;
  background: rgba(0,0,0,0.4);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; margin: 16px 0; }
.footer-stars { color: #fbbf24; }
.footer-title { font-size: 0.9rem; font-weight: 600; color: #e2e8f0; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.85rem; color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--cyan); }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 12px; font-size: 0.85rem; color: var(--text-muted); }
.footer-contact-icon { color: var(--cyan); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: #4b5563; }
.footer-bottom a { color: #4b5563; transition: color 0.2s; }
.footer-bottom a:hover { color: var(--cyan); }
.footer-icp { display: flex; gap: 16px; align-items: center; }
.footer-icp span { color: #374151; }

/* ---------- 滚动动画 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.in-view { opacity: 1; transform: translateY(0); }
.fade-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-left.in-view { opacity: 1; transform: translateX(0); }
.fade-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-right.in-view { opacity: 1; transform: translateX(0); }

/* 延迟 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ---------- 关键帧动画 ---------- */
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(0,212,255,0.3); }
  50% { box-shadow: 0 0 40px rgba(0,212,255,0.6), 0 0 80px rgba(0,212,255,0.2); }
}
@keyframes gradient-flow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 浮动动画 */
.float { animation: float 4s ease-in-out infinite; }
.pulse-glow { animation: pulse-glow 2.5s ease-in-out infinite; }

/* Shimmer on button */
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  border-radius: inherit;
}
.btn-primary { position: relative; overflow: hidden; }
.btn-primary:hover::after { animation: shimmer 0.7s ease; }

/* ---------- 特效装饰 ---------- */
.glow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan), 0 0 20px var(--cyan);
  display: inline-block;
}
.divider-gradient {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  margin: 48px 0;
  opacity: 0.4;
}
.neon-border {
  border: 1px solid var(--border-cyan);
  box-shadow: 0 0 20px rgba(0,212,255,0.05), inset 0 0 20px rgba(0,212,255,0.03);
}

/* ---------- 联系页面地图容器 ---------- */
.map-container {
  width: 100%;
  height: 350px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-cyan);
}
.map-container iframe { width: 100%; height: 100%; border: none; }

/* ---------- 消息弹窗 ---------- */
.toast {
  position: fixed;
  bottom: 32px; right: 32px;
  z-index: 999;
  padding: 16px 24px;
  border-radius: 12px;
  background: rgba(10,14,26,0.95);
  border: 1px solid var(--border-cyan);
  color: #fff;
  font-size: 0.9rem;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s ease;
  max-width: 320px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-color: #22c55e; }
.toast.error { border-color: #ef4444; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .process-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .process-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section-py { padding: 64px 0; }
  .hero-title { font-size: 2.2rem; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .service-list { grid-template-columns: 1fr; }

  /* ===== 移动端 Footer 精简 ===== */
  /* 网站导航列、我们的服务列 — 手机端隐藏 */
  .footer-grid > div:nth-child(2),
  .footer-grid > div:nth-child(3) { display: none; }

  /* Footer 变单列，间距收紧 */
  .footer-grid { grid-template-columns: 1fr; gap: 0; }

  /* 品牌区：横排紧凑 */
  .footer-grid > div:nth-child(1) {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 0 16px;
    border-bottom: 1px solid rgba(0,212,255,0.08);
  }
  .footer-grid > div:nth-child(1) .nav-logo { margin-bottom: 0; }
  .footer-grid > div:nth-child(1) .footer-brand-desc { display: none; }
  .footer-grid > div:nth-child(1) .footer-stars { display: none; }
  /* 星评那一行整体隐藏 */
  .footer-grid > div:nth-child(1) > div:last-child { display: none; }

  /* 联系区：2列网格 */
  .footer-grid > div:nth-child(4) { padding: 16px 0; }
  .footer-grid > div:nth-child(4) .footer-title { font-size: 0.82rem; margin-bottom: 10px; }
  .footer-grid > div:nth-child(4) .footer-contact-item {
    font-size: 0.82rem;
    padding: 3px 0;
  }
  /* 地址隐藏（地图页有，这里省略） */
  .footer-grid > div:nth-child(4) .footer-contact-item:last-child { display: none; }

  /* 底栏 */
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 6px;
    padding: 14px 0;
    font-size: 0.72rem;
  }
  .footer-icp {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    font-size: 0.7rem;
  }
  /* 底栏"高新技术企业"和"网站建设"隐藏，只保留ICP链接 */
  .footer-icp span { display: none; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .process-grid { grid-template-columns: 1fr; }
}

/* ---------- 返回顶部按钮 ---------- */
#back-to-top {
  position: fixed;
  bottom: 32px; right: 28px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  z-index: 99;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s, transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 20px rgba(0,212,255,0.3);
  display: flex; align-items: center; justify-content: center;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); }
#back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,212,255,0.55); }

/* ---------- 滚动进度条 ---------- */
#read-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: var(--gradient);
  z-index: 200;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ---------- 关于我们 · 公司简介区 响应式 ---------- */
@media (max-width: 768px) {
  .about-intro-grid {
    grid-template-columns: 1fr !important;
    gap: 28px !important;
  }
  /* 简介文字段落 */
  .about-intro-grid p {
    font-size: 0.875rem !important;
    line-height: 1.85 !important;
  }
  /* 统计卡片：4个横排一行 */
  .about-stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 8px !important;
  }
  .about-stats-grid .glass-card {
    padding: 14px 6px !important;
  }
  .about-stats-grid .glass-card > div:first-child {
    font-size: 1.2rem !important;
    margin-bottom: 4px !important;
  }
  .about-stats-grid .glass-card .gradient-text {
    font-size: 0.8rem !important;
    font-weight: 700 !important;
    line-height: 1.3 !important;
    word-break: keep-all !important;
  }
  .about-stats-grid .glass-card > div:last-child {
    font-size: 0.68rem !important;
    color: #64748b !important;
  }
}
.footer-phone-link { color: var(--text-muted); transition: color 0.2s; }
.footer-phone-link:hover { color: var(--cyan); }

/* ---------- 团队头像 ---------- */
.team-avatar {
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto;
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 0 0 2px #0f1629, 0 0 0 4px rgba(0,212,255,0.5);
}
.team-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: block;
  background: #fff;
}
.team-avatar-lg { width: 108px; height: 108px; margin-bottom: 24px; }
.team-avatar-sm { width: 80px; height: 80px; margin-bottom: 16px; }

/* ---------- FAQ 折叠面板 ---------- */
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid rgba(0,212,255,0.1); }
.faq-item:first-child { border-top: 1px solid rgba(0,212,255,0.1); }
.faq-question {
  width: 100%; background: none; border: none;
  color: #e2e8f0; font-size: 0.95rem; font-weight: 600;
  text-align: left; padding: 18px 4px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  transition: color 0.2s;
}
.faq-question:hover, .faq-question[aria-expanded="true"] { color: #00d4ff; }
.faq-icon {
  font-size: 1.5rem; font-weight: 300; flex-shrink: 0;
  color: #00d4ff; transition: transform 0.3s; line-height: 1;
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  overflow: hidden; max-height: 0;
  transition: max-height 0.35s ease;
}
.faq-answer.open { max-height: 400px; }
.faq-answer p {
  color: #94a3b8; font-size: 0.9rem; line-height: 1.8;
  padding: 0 4px 18px;
}

/* ---------- 案例详情弹窗 ---------- */
.case-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5,8,18,0.85);
  backdrop-filter: blur(8px);
  z-index: 9000;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.case-modal-overlay.open { opacity: 1; pointer-events: all; }
.case-modal-box {
  background: #0f1629;
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 20px;
  max-width: 680px; width: 100%; max-height: 85vh;
  overflow-y: auto; padding: 40px;
  position: relative;
  transform: translateY(24px);
  transition: transform 0.3s;
}
.case-modal-overlay.open .case-modal-box { transform: translateY(0); }
.case-modal-close {
  position: absolute; top: 16px; right: 20px;
  background: none; border: none; color: #64748b;
  font-size: 1.8rem; cursor: pointer; line-height: 1;
  transition: color 0.2s;
}
.case-modal-close:hover { color: #00d4ff; }

/* ---------- 案例详情按钮 ---------- */
.btn-case-detail {
  background: none;
  border: 1px solid rgba(0,212,255,0.3);
  color: #00d4ff; font-size: 0.8rem; font-weight: 600;
  padding: 7px 16px; border-radius: 20px; cursor: pointer;
  transition: all 0.25s;
}
.btn-case-detail:hover {
  background: rgba(0,212,255,0.08);
  border-color: rgba(0,212,255,0.6);
}

/* ---------- 表单错误状态 ---------- */
.form-input.error, .form-select.error { border-color: #f87171 !important; }
.field-error { color: #f87171; font-size: 0.75rem; margin-top: 4px; }