/* ==========================================================================
   宁波九月网络科技有限公司 - 科技感H5官方网站核心样式库
   September Network Technology Co., Ltd. - Cyberpunk & Tech Design System
   ========================================================================== */

:root {
  /* 品牌核心高科技色系 */
  --bg-primary: #050814;
  --bg-secondary: #0a0f26;
  --bg-card: rgba(13, 22, 45, 0.7);
  --bg-card-hover: rgba(20, 34, 70, 0.85);
  --bg-glass: rgba(16, 26, 56, 0.55);
  
  /* 科技霓虹核心强调色 */
  --neon-cyan: #00f0ff;
  --neon-blue: #0072ff;
  --neon-purple: #8a2be2;
  --neon-violet: #a855f7;
  --neon-emerald: #10b981;
  --neon-amber: #f59e0b;

  /* 文字颜色层级 */
  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-highlight: #38bdf8;

  /* 边框与发光层 */
  --border-cyan: rgba(0, 240, 255, 0.22);
  --border-cyan-glow: rgba(0, 240, 255, 0.6);
  --border-purple: rgba(168, 85, 247, 0.25);
  --border-glass: rgba(255, 255, 255, 0.08);

  /* 阴影与光晕效果 */
  --glow-cyan: 0 0 25px rgba(0, 240, 255, 0.35);
  --glow-purple: 0 0 25px rgba(168, 85, 247, 0.35);
  --glow-button: 0 4px 20px rgba(0, 240, 255, 0.4);
  --shadow-card: 0 12px 36px -8px rgba(0, 0, 0, 0.6);

  /* 尺寸与过渡 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  overflow-x: hidden;
}

body {
  position: relative;
  min-height: 100vh;
  background: radial-gradient(circle at 50% 0%, #0d1b3e 0%, var(--bg-primary) 70%);
  overflow-x: hidden;
  line-height: 1.6;
}

/* 动态背景画布 */
#techCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: auto;
  opacity: 0.85;
}

/* 背景光晕装饰球 */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  animation: pulseGlow 12s infinite alternate ease-in-out;
}

.ambient-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.45) 0%, transparent 70%);
  top: -100px;
  left: -100px;
}

.ambient-glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(138, 43, 226, 0.35) 0%, transparent 70%);
  top: 40%;
  right: -150px;
  animation-delay: -6s;
}

.ambient-glow-3 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(0, 114, 255, 0.35) 0%, transparent 70%);
  bottom: -100px;
  left: 20%;
  animation-delay: -3s;
}

@keyframes pulseGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.35; }
  50% { transform: scale(1.2) translate(30px, -20px); opacity: 0.55; }
  100% { transform: scale(0.9) translate(-20px, 30px); opacity: 0.35; }
}

/* 内容全局包裹容器 */
.page-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部导航栏 (Navbar) */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(5, 8, 20, 0.75);
  border-bottom: 1px solid var(--border-cyan);
  transition: var(--transition);
}

.navbar.scrolled {
  height: 68px;
  background: rgba(5, 8, 20, 0.92);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
  border-bottom-color: rgba(0, 240, 255, 0.35);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 品牌 Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  cursor: pointer;
}

.logo-icon-box {
  width: 42px;
  height: 42px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(138, 43, 226, 0.3));
  border: 1px solid var(--neon-cyan);
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  overflow: hidden;
}

.logo-icon-box::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.6), transparent);
  animation: shineScan 3s linear infinite;
}

@keyframes shineScan {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #ffffff 0%, var(--neon-cyan) 60%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* 导航链接 */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  position: relative;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 2px;
  transition: var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-blue));
  box-shadow: 0 0 8px var(--neon-cyan);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
  color: var(--neon-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 移动端汉堡按钮 */
.hamburger-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-cyan);
  border-radius: 8px;
  padding: 8px;
  color: var(--neon-cyan);
  cursor: pointer;
  outline: none;
}

/* 按钮规范 */
.btn-cyber {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.9), rgba(0, 114, 255, 0.9));
  color: #050814;
  box-shadow: var(--glow-button);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 240, 255, 0.6);
  filter: brightness(1.1);
}

.btn-outline {
  background: rgba(13, 22, 45, 0.5);
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.btn-outline:hover {
  background: rgba(0, 240, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.35);
  color: #fff;
}

/* ==========================================================================
   Hero 主视觉板块
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--neon-cyan);
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
}

.beacon-dot {
  width: 8px;
  height: 8px;
  background-color: var(--neon-emerald);
  border-radius: 50%;
  position: relative;
}

.beacon-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--neon-emerald);
  animation: beaconPulse 1.8s infinite cubic-bezier(0, 0, 0.2, 1);
}

@keyframes beaconPulse {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

.hero-title {
  font-size: clamp(2.3rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--neon-cyan) 45%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* 核心指标统计条 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--border-glass);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  font-family: 'Outfit', sans-serif;
  letter-spacing: 0.5px;
}

.stat-number span {
  font-size: 1.1rem;
  color: var(--neon-cyan);
  margin-left: 2px;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Hero 右侧科技悬浮视窗 (IoT Telemetry Card) */
.hero-telemetry-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 240, 255, 0.15);
  animation: floatTelemetry 6s ease-in-out infinite;
}

@keyframes floatTelemetry {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.telemetry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.telemetry-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.live-badge {
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--neon-emerald);
  color: var(--neon-emerald);
  font-size: 0.7rem;
  font-weight: 600;
}

.telemetry-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 18px;
}

.metric-card {
  background: rgba(5, 8, 20, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.metric-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.metric-val {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--neon-cyan);
  font-family: 'Outfit', sans-serif;
}

/* 模拟实时数据流日志 */
.telemetry-stream-console {
  background: #02040b;
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 0.75rem;
  color: #94a3b8;
  height: 120px;
  overflow: hidden;
  position: relative;
}

.telemetry-stream-console::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 35px;
  background: linear-gradient(to top, #02040b, transparent);
  pointer-events: none;
}

.stream-line {
  line-height: 1.7;
  white-space: nowrap;
  animation: streamFade 0.4s ease-out;
}

.stream-tag {
  color: var(--neon-cyan);
}

.stream-ok {
  color: var(--neon-emerald);
}

.stream-topic {
  color: var(--neon-violet);
}

/* ==========================================================================
   通用 Section 标题规范
   ========================================================================== */
.section-padding {
  padding: 110px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
}

.section-tag::before,
.section-tag::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--neon-cyan);
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   业务矩阵 (Services Matrix)
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-cyan);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card), var(--glow-cyan);
}

.service-card:hover::before {
  transform: translateX(100%);
}

.service-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(138, 43, 226, 0.12));
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  margin-bottom: 24px;
  transition: var(--transition);
}

.service-card:hover .service-icon-wrap {
  transform: scale(1.1) rotate(4deg);
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.25), rgba(138, 43, 226, 0.3));
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.service-num {
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 2.2rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.05);
  font-family: 'Outfit', sans-serif;
}

.service-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #fff;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tech-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.18);
  color: #a5f3fc;
}

.service-footer {
  padding-top: 18px;
  border-top: 1px solid var(--border-glass);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--neon-cyan);
  text-decoration: none;
  transition: var(--transition);
}

.service-link:hover {
  gap: 10px;
  color: #fff;
}

/* ==========================================================================
   AIoT 物联网全栈架构方案深度展区 (IoT Architecture)
   ========================================================================== */
.iot-architecture-box {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
  position: relative;
  overflow: hidden;
}

.arch-layers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  margin-top: 30px;
}

.arch-layer-card {
  background: rgba(10, 16, 38, 0.85);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
  transition: var(--transition);
}

.arch-layer-card:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.2);
}

.layer-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--neon-cyan);
  margin-bottom: 8px;
}

.layer-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.layer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.layer-item {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.layer-item::before {
  content: '✦';
  font-size: 0.65rem;
  color: var(--neon-cyan);
}

/* 动效脉冲光线 */
.arch-pulse-bar {
  position: relative;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  margin: 36px 0 10px;
  overflow: hidden;
}

.arch-pulse-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-violet), transparent);
  animation: pulseMove 3s infinite linear;
}

@keyframes pulseMove {
  0% { transform: translateX(-200px); }
  100% { transform: translateX(1240px); }
}

/* ==========================================================================
   案例精选 (Showcase Cases)
   ========================================================================== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-card), 0 0 30px rgba(0, 240, 255, 0.2);
}

.case-preview {
  height: 230px;
  position: relative;
  background: linear-gradient(135deg, #09122c, #131c3f);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-glass);
}

.case-preview-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0, 240, 255, 0.15) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.6;
}

.case-preview-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 20px;
}

.case-category {
  display: inline-block;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.15);
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  margin-bottom: 12px;
}

.case-preview-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}

.case-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.case-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  background: rgba(5, 8, 20, 0.6);
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.highlight-box {
  text-align: center;
}

.highlight-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--neon-cyan);
  font-family: 'Outfit', sans-serif;
}

.highlight-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ==========================================================================
   技术底座 (Tech Stack)
   ========================================================================== */
.tech-cloud-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.tech-item-box {
  background: rgba(13, 22, 45, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px 14px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.tech-item-box:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-4px);
  background: rgba(20, 34, 70, 0.8);
  box-shadow: 0 8px 24px rgba(0, 240, 255, 0.25);
}

.tech-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
}

.tech-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
}

.tech-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   智能需求预算评估器 (Interactive Estimator)
   ========================================================================== */
.estimator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), var(--glow-cyan);
}

.estimator-step {
  margin-bottom: 32px;
}

.estimator-step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-num {
  width: 26px;
  height: 26px;
  background: var(--neon-cyan);
  color: #050814;
  font-size: 0.85rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.estimator-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.option-chip {
  background: rgba(5, 8, 20, 0.6);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  user-select: none;
}

.option-chip:hover {
  border-color: rgba(0, 240, 255, 0.4);
  background: rgba(0, 240, 255, 0.05);
}

.option-chip.selected {
  border-color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.15);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.option-chip-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.option-chip-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.estimator-result-bar {
  background: rgba(5, 8, 20, 0.85);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 36px;
}

.estimate-info-group {
  display: flex;
  align-items: center;
  gap: 36px;
}

.estimate-info-item {
  display: flex;
  flex-direction: column;
}

.estimate-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.estimate-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--neon-cyan);
  font-family: 'Outfit', sans-serif;
}

/* ==========================================================================
   交付流程 (Workflow)
   ========================================================================== */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  position: relative;
}

.workflow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.workflow-card:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-6px);
  box-shadow: 0 10px 25px rgba(0, 240, 255, 0.2);
}

.workflow-step-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: rgba(0, 240, 255, 0.4);
  font-family: 'Outfit', sans-serif;
  margin-bottom: 8px;
}

.workflow-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.workflow-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   关于我们 (About Us)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-lead {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.7;
}

.about-p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-perks-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}

.perk-box {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(13, 22, 45, 0.5);
  border: 1px solid var(--border-glass);
  padding: 14px;
  border-radius: var(--radius-sm);
}

.perk-icon {
  color: var(--neon-cyan);
  font-size: 1.2rem;
}

.perk-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}

.perk-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.about-visual-card {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

/* ==========================================================================
   联系与需求留言 (Contact Section)
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 40px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-cyan);
  flex-shrink: 0;
}

.contact-meta-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-meta-content {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
}

.contact-form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  background: rgba(5, 8, 20, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #fff;
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
  background: rgba(5, 8, 20, 0.9);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.footer {
  background: #02040b;
  border-top: 1px solid rgba(0, 240, 255, 0.15);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-glass);
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--neon-cyan);
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   悬浮快捷挂件 (Floating Cyber Bar)
   ========================================================================== */
.floating-cyber-bar {
  position: fixed;
  right: 24px;
  bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.cyber-float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(13, 22, 45, 0.85);
  border: 1px solid var(--border-cyan);
  color: var(--neon-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  transition: var(--transition);
  text-decoration: none;
}

.cyber-float-btn:hover {
  transform: scale(1.12);
  background: var(--neon-cyan);
  color: #050814;
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
}

/* 微信/弹窗 Modal */
.tech-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.tech-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.tech-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), var(--glow-cyan);
  position: relative;
  text-align: center;
  transform: scale(0.9);
  transition: var(--transition);
}

.tech-modal-overlay.active .tech-modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.3rem;
  transition: var(--transition);
}

.modal-close-btn:hover {
  color: var(--neon-cyan);
}

/* Toast 提示条 */
.tech-toast {
  position: fixed;
  top: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(-30px);
  background: rgba(13, 22, 45, 0.95);
  border: 1px solid var(--neon-cyan);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.4);
  z-index: 3000;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tech-toast.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ==========================================================================
   响应式断点适配 (Responsive Media Queries)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-telemetry-box {
    max-width: 580px;
    margin: 0 auto;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .arch-layers-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .tech-cloud-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .workflow-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-container {
    padding: 0 16px;
  }

  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(5, 8, 20, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid var(--border-cyan);
    flex-direction: column;
    padding: 30px 24px;
    gap: 20px;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-actions .btn-cyber {
    display: none;
  }

  .hamburger-btn {
    display: block;
  }

  .hero-section {
    padding: 110px 0 60px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .arch-layers-grid {
    grid-template-columns: 1fr;
  }

  .estimator-options {
    grid-template-columns: repeat(2, 1fr);
  }

  .estimator-card {
    padding: 24px;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-cloud-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .floating-cyber-bar {
    right: 16px;
    bottom: 20px;
  }
}