/* ==========================================================================
   DAXIN 3D PRINTING - STYLES.CSS
   Aesthetics: Deep Space dark mode, futuristic glassmorphism, laser cyan accents
   ========================================================================== */

/* 变量定义 */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #11182c;
  --bg-card: rgba(21, 30, 54, 0.65);
  --bg-card-border: rgba(0, 242, 254, 0.15);
  
  --color-primary: #00f2fe;     /* 激光蓝 */
  --color-secondary: #4facfe;   /* 科技蓝 */
  --color-accent: #00c250;      /* 微信绿 / 成功色 */
  --color-text-main: #ffffff;
  --color-text-muted: #94a3b8;  
  --color-text-dim: #64748b;
  
  --grad-main: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --grad-dark: linear-gradient(180deg, #11182c 0%, #0a0e1a 100%);
  --grad-glow: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, transparent 70%);

  /* 纯系统字体栈：iOS/macOS 用 -apple-system/SF Pro；Windows 用 Segoe UI；中文按系统偏好用苹方/微软雅黑；无任何外网依赖 */
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-blur: blur(12px);
  --box-shadow-glow: 0 0 25px rgba(0, 242, 254, 0.25);

  /* v0.1.8 · 设计系统 tokens（Cinema Dark：expo-out 缓动 / 发丝边框 / 顶边高光） */
  --easing-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --border-hairline: rgba(255, 255, 255, 0.08);
  --edge-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 242, 254, 0.12);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--color-text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  background-image:
    radial-gradient(at 0% 0%, rgba(79, 172, 254, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(0, 242, 254, 0.06) 0px, transparent 50%),
    linear-gradient(180deg, #0c1120 0%, var(--bg-primary) 30%);
}

/* v0.1.8 · 环境光斑：两团缓慢漂移的辉光，撑起"深空车间"氛围（transform-only，GPU 友好） */
body::before,
body::after {
  content: '';
  position: fixed;
  z-index: -1;
  width: 55vmax;
  height: 55vmax;
  border-radius: 50%;
  pointer-events: none;
}
body::before {
  top: -22vmax;
  left: -18vmax;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.07) 0%, transparent 62%);
  animation: ambient-drift-a 26s ease-in-out infinite alternate;
}
body::after {
  bottom: -25vmax;
  right: -20vmax;
  background: radial-gradient(circle, rgba(79, 172, 254, 0.06) 0%, transparent 62%);
  animation: ambient-drift-b 32s ease-in-out infinite alternate;
}
@keyframes ambient-drift-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(6vmax, 4vmax) scale(1.12); }
}
@keyframes ambient-drift-b {
  from { transform: translate(0, 0) scale(1.08); }
  to   { transform: translate(-5vmax, -4vmax) scale(1); }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* 常用排版 & 标题 */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.section-title-wrap {
  margin-bottom: 3.5rem;
}

.sub-title {
  font-family: var(--font-display);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.25rem;
  line-height: 1.25;
  color: #ffffff; /* fallback：不支持 background-clip:text 的 WebView 显示白字 */
  background: linear-gradient(120deg, #ffffff 40%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.title-bar {
  width: 60px;
  height: 4px;
  background: var(--grad-main);
  border-radius: 2px;
  margin-top: 1rem;
}

.title-bar.center {
  margin-left: auto;
  margin-right: auto;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: var(--grad-main);
  color: #000000;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-glow);
  opacity: 0.95;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-glow {
  background: var(--grad-main);
  color: #000000;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: var(--box-shadow-glow);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

.badge {
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.45);
  color: var(--color-primary);
  padding: 0.3rem 0.9rem 0.3rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

/* v0.1.8 · 徽章呼吸脉冲点 */
.badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  animation: badge-pulse 2.2s ease-in-out infinite;
}
@keyframes badge-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.8); }
}

.icon {
  width: 18px;
  height: 18px;
}

/* 导航栏 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  background: rgba(10, 14, 26, 0.95);
  border-bottom-color: rgba(0, 242, 254, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header-container {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-svg {
  height: 36px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: 2.25rem;
}

.nav-item {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  padding: 0.25rem 0;
}

.nav-item:hover, .nav-item.active {
  color: var(--color-primary);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-main);
  transition: var(--transition-smooth);
}

.nav-item:hover::after {
  width: 100%;
}

/* Hero 视觉区 */
.hero-section {
  padding-top: 150px;
  padding-bottom: 90px;
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* v0.1.8 · Hero 蓝图网格底：细线网格 + 中央径向渐隐，制造"数字化车间"纵深 */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 242, 254, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 242, 254, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 75% at 50% 40%, #000 20%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 75% at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin-bottom: 0.5rem;
  color: #ffffff; /* fallback：不支持 background-clip:text 的 WebView 显示白字 */
  background: linear-gradient(135deg, #ffffff 55%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 部分国产安卓 WebView 只认 -webkit-text-fill-color 却不裁切背景 → 整块渐变糊住文字。
   显式检测：两个属性都不支持时回退为实色白字 + 无背景 */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero-content h1,
  .section-title,
  .stat-mini .stat-num,
  .contact-info-panel h2 {
    background: none;
    -webkit-text-fill-color: currentColor;
    color: #ffffff;
  }
}

.hero-content h2 {
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  color: var(--color-secondary);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.hero-content p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.stat-mini .stat-num {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: #ffffff;
  line-height: 1;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 12px rgba(0, 242, 254, 0.35));
}

.stat-mini .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
}

.hero-visual {
  position: relative;
}

.visual-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0, 242, 254, 0.25);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 242, 254, 0.1);
  aspect-ratio: 16 / 9;
}

.visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.visual-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(0deg, rgba(10, 14, 26, 0.4) 0%, transparent 100%);
  pointer-events: none;
}

/* 激光扫描动画线 */
.scanner-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-primary);
  box-shadow: 0 0 15px var(--color-primary), 0 0 5px var(--color-primary);
  animation: scan 4s linear infinite;
  opacity: 0.8;
  pointer-events: none;
}

@keyframes scan {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

/* 关于我们 Section */
.about-section {
  padding: 100px 0;
  background-color: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h3 {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
}

.feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid var(--color-primary);
  border-radius: 50%;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.8rem;
}

.feature-item strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.feature-item span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.about-gallery {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.gallery-info h4 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.gallery-info p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 120px 120px;
  gap: 1rem;
}

.gallery-card {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background-size: cover;
  background-position: center;
  transition: var(--transition-smooth);
  /* 背景图 div 无内在高度，用 aspect-ratio 兜底防塌陷（尤其手机端 flex 里） */
  aspect-ratio: 4 / 3;
  min-height: 180px;
}

.gallery-card:hover {
  transform: scale(1.02);
  border-color: var(--color-primary);
  box-shadow: 0 5px 15px rgba(0, 242, 254, 0.1);
}

.gc-1 {
  grid-row: span 2;
  background-image: url('assets/extracted_p4_3.jpg');
}

.gc-2 {
  background-image: url('assets/extracted_p4_4.jpg');
}

.gc-3 {
  background-image: url('assets/extracted_p4_6.jpg');
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0.75rem 1rem;
  background: linear-gradient(0deg, rgba(0,0,0,0.85) 0%, transparent 100%);
  font-size: 0.85rem;
  font-weight: 500;
  color: #ffffff;
}

/* 工艺实力 Section */
.tech-section {
  padding: 100px 0;
}

.tech-tabs-container {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  margin-bottom: 5rem;
}

.tabs-nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1rem;
  /* 窄屏 tab 溢出时横滑，不换行 */
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  /* 每个 tab 保持整块，不被 flex 压缩、不换行 */
  white-space: nowrap;
  flex-shrink: 0;
  scroll-snap-align: start;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad-main);
  border-radius: 2px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.tab-info h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.tech-desc {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.tech-specs {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.tech-specs li {
  display: flex;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.tech-specs strong {
  color: var(--color-primary);
  min-width: 110px;
}

.tab-img-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
}

.tab-glow-bg {
  position: absolute;
  top: 10%;
  left: 10%;
  width: 80%;
  height: 80%;
  background: var(--grad-glow);
  filter: blur(20px);
  z-index: 1;
}

.tech-placeholder-img {
  width: 100%;
  height: 100%;
  /* 背景图 div 兜底：父级 flex/grid 塌陷时靠 aspect-ratio 撑高，不再依赖父级 explicit height */
  aspect-ratio: 16 / 10;
  min-height: 200px;
  border-radius: 12px;
  border: 1px solid rgba(0, 242, 254, 0.15);
  background-size: cover;
  background-position: center;
  position: relative;
  z-index: 2;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

/* 渲染提取出来的设备真实照片，采用 contain 并在深色容器中居中展示，体现高科技设备美感 */
.sla-bg { 
  background-image: url('assets/extracted_p7_1.png'); 
  background-size: contain; 
  background-repeat: no-repeat; 
  background-position: center;
  background-color: rgba(255, 255, 255, 0.02);
}
.sls-bg { 
  background-image: url('assets/extracted_p7_2.jpg'); 
  background-size: contain; 
  background-repeat: no-repeat; 
  background-position: center;
  background-color: rgba(255, 255, 255, 0.02);
}
.mjf-bg { 
  background-image: url('assets/extracted_p7_3.png'); 
  background-size: contain; 
  background-repeat: no-repeat; 
  background-position: center;
  background-color: rgba(255, 255, 255, 0.02);
}
.slm-bg { 
  background-image: url('assets/extracted_p7_4.jpg'); 
  background-size: contain; 
  background-repeat: no-repeat; 
  background-position: center;
  background-color: rgba(255, 255, 255, 0.02);
}

/* 后处理板块 */
.post-process-wrap {
  margin-top: 4rem;
}

.post-title {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.post-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 3rem;
  font-size: 1rem;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.post-img-box {
  width: 100%;
  height: 160px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.post-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition-smooth);
}

.post-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px rgba(0, 242, 254, 0.08);
}

.post-card:hover .post-card-img {
  transform: scale(1.05);
}

.post-card-content {
  padding: 1.75rem;
}

.post-icon-wrap {
  width: 44px;
  height: 44px;
  background: rgba(0, 242, 254, 0.08);
  border-radius: 10px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.post-svg {
  width: 22px;
  height: 22px;
}

.post-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.post-card p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* 材料中心 Section */
.material-section {
  padding: 100px 0;
  background-color: var(--bg-secondary);
}

.material-intro {
  color: var(--color-text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
}

.material-filter-box {
  margin-bottom: 3rem;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-muted);
  padding: 0.6rem 1.25rem;
  border-radius: 30px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0, 242, 254, 0.04);
}

.filter-btn.active {
  background: var(--grad-main);
  color: #000000;
  border-color: transparent;
  font-weight: 600;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.material-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.material-card.hidden {
  display: none;
}

.material-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.05);
}

.mat-image-box {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.01);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mat-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* 保留原材料图的完整性，不拉伸剪裁 */
  background-color: #ffffff; /* 材料展示卡图纸通常为白色底，白底看起来特别干净 */
  transition: var(--transition-smooth);
}

.material-card:hover .mat-card-img {
  transform: scale(1.03);
}

.mat-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex-grow: 1;
}

.mat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 0.5rem;
}

.mat-header h4 {
  font-size: 1.15rem;
  font-weight: 600;
}

.mat-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  flex-shrink: 0;
}

.tag-resin { background: rgba(0, 242, 254, 0.1); color: var(--color-primary); border: 1px solid rgba(0, 242, 254, 0.2); }
.tag-nylon { background: rgba(162, 89, 255, 0.1); color: #b682ff; border: 1px solid rgba(162, 89, 255, 0.2); }
.tag-metal { background: rgba(243, 156, 18, 0.1); color: #f39c12; border: 1px solid rgba(243, 156, 18, 0.2); }
.tag-trad { background: rgba(235, 94, 40, 0.1); color: #eb5e28; border: 1px solid rgba(235, 94, 40, 0.2); }

.mat-body {
  margin-bottom: 1.5rem;
}

.mat-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.mat-apps {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.mat-body strong {
  color: #ffffff;
}

.mat-specs {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-secondary);
  font-weight: 500;
}

/* 行业运用案例 Section */
.case-section {
  padding: 100px 0;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.case-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  overflow: hidden;
  padding: 2.25rem 2rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
}

.case-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.7; /* 适当半透明，衬托底部的暗黑遮罩与白字 */
  transition: var(--transition-smooth);
}

.case-card:hover .case-bg-img {
  transform: scale(1.05);
  opacity: 0.9;
}

/* 精美卡片效果，科技渐变底罩 */
.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(10, 14, 26, 0.2) 0%, rgba(10, 14, 26, 0.95) 100%);
  z-index: 1;
}

.case-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: 0 15px 35px rgba(0, 242, 254, 0.15);
}

/* STL / OBJ 解析 */
.analyzer-section {
  padding: 30px 0 10px;
}

.analyzer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.5rem;
}

.analyzer-panel {
  position: relative;
  background: linear-gradient(180deg, rgba(17, 24, 44, 0.86), rgba(10, 14, 26, 0.92));
  border: 1px solid var(--border-hairline);
  box-shadow: var(--shadow-card), var(--edge-highlight);
  border-radius: 24px;
  padding: 1.6rem;
  overflow: hidden;
}

.analyzer-panel::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.analyzer-kicker {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.18);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.analyzer-upload-panel h3,
.analyzer-result-head strong {
  font-size: 1.4rem;
  line-height: 1.3;
}

.analyzer-upload-panel p {
  color: var(--color-text-muted);
  margin-top: 0.9rem;
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 0.75rem;
  min-height: 270px;
  margin-top: 1.35rem;
  padding: 1.5rem;
  border-radius: 22px;
  border: 1px dashed rgba(0, 242, 254, 0.28);
  background:
    linear-gradient(180deg, rgba(0, 242, 254, 0.05), rgba(79, 172, 254, 0.02)),
    radial-gradient(circle at top, rgba(0, 242, 254, 0.08), transparent 55%);
  text-align: center;
  cursor: pointer;
  transition: transform 0.35s var(--easing-expo), border-color 0.35s var(--easing-expo), box-shadow 0.35s var(--easing-expo);
}

.dropzone:hover,
.dropzone.is-dragover {
  transform: translateY(-2px);
  border-color: rgba(0, 242, 254, 0.55);
  box-shadow: 0 0 0 1px rgba(0, 242, 254, 0.1), 0 18px 34px rgba(0, 0, 0, 0.28);
}

.dropzone strong {
  font-size: 1.1rem;
}

.dropzone span {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.dropzone-icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-primary);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.dropzone-icon svg {
  width: 34px;
  height: 34px;
}

.analyzer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.analyzer-meta span {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.analyzer-result-head {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.2rem;
}

.result-state {
  color: var(--color-primary);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.analyzer-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.analyzer-stat-card {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.analyzer-stat-card .stat-label {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}

.analyzer-stat-card strong {
  display: block;
  font-size: 1rem;
  line-height: 1.4;
  word-break: break-word;
}

.analyzer-summary {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-muted);
}

.analyzer-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.1rem;
  flex-wrap: wrap;
}

.analyzer-result-panel.is-loading .result-state {
  color: #ffd166;
}

.analyzer-result-panel.is-success .result-state {
  color: #52ffa8;
}

.analyzer-result-panel.is-error .result-state {
  color: #ff7c7c;
}

.case-badge {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  background: rgba(10, 14, 26, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 0.25rem 0.75rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 2;
  transition: var(--transition-smooth);
}

.case-card:hover .case-badge {
  background: var(--color-primary);
  color: #000000;
  border-color: transparent;
}

.case-content {
  position: relative;
  z-index: 2;
}

.case-content h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: #ffffff;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.case-content p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 联系我们 Section */
.contact-section {
  padding: 100px 0;
  background-color: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.contact-info-panel h2 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  color: #ffffff;
  background: linear-gradient(120deg, #ffffff 40%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.contact-info-panel p {
  color: var(--color-text-muted);
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-card, .contact-card-btn {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.contact-card:hover, .contact-card-btn:hover {
  transform: translateX(5px);
  border-color: var(--color-primary);
  background: rgba(0, 242, 254, 0.05);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 242, 254, 0.08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

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

.contact-text .label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.contact-text .value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

/* 询价表单 */
.contact-form-panel {
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 3rem;
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.3);
}

.contact-form-panel h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.contact-form-panel p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

/* 声明式微信加好友弹层 (Popover 样式) */
#wechat-popover {
  border: none;
  border-radius: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-card-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 242, 254, 0.1);
  padding: 0;
  max-width: 420px;
  width: calc(100% - 2rem);
  
  /* 声明式过渡动画：进入 Top Layer 的状态 */
  position: fixed;
  margin: auto;
  inset: 0;
  
  opacity: 0;
  transform: scale(0.9);
  transition-property: opacity, transform, display, overlay;
  transition-duration: 0.3s;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-behavior: allow-discrete;
}

#wechat-popover:popover-open {
  opacity: 1;
  transform: scale(1);
  
  @starting-style {
    opacity: 0;
    transform: scale(0.9);
  }
}

/* 背景板 (Backdrop) 过渡 */
#wechat-popover::backdrop {
  background-color: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
  transition: 
    display 0.3s allow-discrete,
    overlay 0.3s allow-discrete,
    background-color 0.3s ease-out,
    backdrop-filter 0.3s ease-out;
}

#wechat-popover:popover-open::backdrop {
  background-color: rgba(6, 9, 17, 0.8);
  backdrop-filter: var(--glass-blur);
  
  @starting-style {
    background-color: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
  }
}

.popover-inner {
  padding: 2rem;
}

.popover-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.75rem;
}

.popover-header h3 {
  font-size: 1.25rem;
  color: #ffffff;
}

.popover-close-btn {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.75rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-smooth);
}

.popover-close-btn:hover {
  color: var(--color-primary);
}

.popover-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.popover-body p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.qr-code-wrapper {
  background: #ffffff;
  padding: 0.75rem;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  margin: 0 auto 1.5rem;
  width: fit-content;
}

.qr-image {
  width: 260px;
  max-width: min(78vw, 260px);
  height: auto;
  display: block;
  object-fit: contain;
}

.wechat-id-copy {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

.wechat-id-copy strong {
  color: var(--color-primary);
}

.btn-copy {
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.75rem;
  padding: 0.3rem 0.75rem;
}

.btn-copy:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* 页脚 */
.site-footer {
  background-color: var(--bg-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2.5rem 0;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-links a {
  color: var(--color-text-dim);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-links .sep {
  color: rgba(255, 255, 255, 0.05);
}

/* v0.1.1.6 页脚版本号 */
.footer-version {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: ui-monospace, "SF Mono", Consolas, "PingFang SC", monospace;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.32);
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  user-select: all;
}
.footer-version:hover {
  color: var(--color-primary);
  border-color: rgba(0, 242, 254, 0.28);
}
.footer-version .version-tag {
  font-weight: 600;
  letter-spacing: 0.02em;
}
.footer-version .version-date {
  opacity: 0.75;
}

/* ==========================================================================
   v0.1.2 转化管道模块样式
   ========================================================================== */

/* ---- Promo Bar (首单免费打样 CTA) ---- */
.promo-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  background: linear-gradient(90deg, #00c250 0%, #00a341 100%);
  color: #ffffff;
  font-family: var(--font-body);
  box-shadow: 0 2px 12px rgba(0, 194, 80, 0.25);
}

.promo-bar[hidden] { display: none; }

.promo-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 40px;
  padding: 0.4rem 1rem;
  font-size: 0.92rem;
  flex-wrap: wrap;
}

.promo-icon { font-size: 1.05rem; }

.promo-text strong {
  font-weight: 700;
  padding: 0 0.15rem;
  color: #fffbdd;
}

.promo-cta {
  padding: 0.55rem 1.1rem;
  min-height: 40px;
  background: rgba(255, 255, 255, 0.95);
  color: #00753a;
  border: none;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.88rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.promo-cta:hover { transform: scale(1.05); background: #ffffff; }

.promo-close {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  /* 触摸靶 ≥ 40×40，符合 Apple HIG（原 26×22 太小） */
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  opacity: 0.85;
  transition: opacity 0.15s ease;
}
.promo-close:hover { opacity: 1; }

/* 有促销条时，把 site-header 下推 40px 让位 */
body.has-promo .site-header { top: 40px; }

/* ---- Toast 通用提示 ---- */
.toast-container {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  min-width: 220px;
  max-width: 360px;
  padding: 0.85rem 1.1rem;
  border-radius: 10px;
  color: #ffffff;
  font-size: 0.92rem;
  line-height: 1.5;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.28s ease, transform 0.28s ease;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}
.toast-show { opacity: 1; transform: translateY(0); }

.toast-info    { background: rgba(30, 41, 66, 0.94); border: 1px solid rgba(0, 242, 254, 0.35); }
.toast-success { background: rgba(0, 108, 55, 0.94); border: 1px solid rgba(0, 194, 80, 0.6); }
.toast-warn    { background: rgba(140, 92, 0, 0.94); border: 1px solid rgba(255, 176, 32, 0.6); }
.toast-error   { background: rgba(140, 30, 40, 0.94); border: 1px solid rgba(255, 90, 90, 0.55); }

/* ---- 表单隐私提示 ---- */
.form-privacy-note {
  margin-top: 0.8rem;
  font-size: 0.78rem;
  color: var(--color-text-dim);
  text-align: center;
}

/* ---- Popover 内客服跳转按钮 & 提示 ---- */
.wechat-kf-jump {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  text-decoration: none;
}
.wechat-kf-jump .icon {
  width: 18px;
  height: 18px;
}
.popover-tip {
  margin-top: 0.8rem;
  font-size: 0.78rem;
  color: var(--color-text-dim);
  text-align: center;
}

/* ==========================================================================
   v0.1.1.5 · 手机底部切片导航 + 横滑切片 + 图片 Lightbox
   ========================================================================== */

/* ---- 手机底部切片导航（桌面端隐藏） ---- */
.mobile-tab-nav {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 1050;
  background: rgba(10, 14, 26, 0.94);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(0, 242, 254, 0.18);
  padding: 6px env(safe-area-inset-right) calc(6px + env(safe-area-inset-bottom)) env(safe-area-inset-left);
  justify-content: space-around;
  align-items: stretch;
}

.mtab {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 6px 2px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 11px;
  font-family: var(--font-body);
  border-radius: 10px;
  transition: color 0.18s ease, background 0.18s ease, transform 0.15s ease;
}
.mtab svg { width: 22px; height: 22px; stroke: currentColor; }
.mtab:active { transform: scale(0.95); }
.mtab.active { color: var(--color-primary); background: rgba(0, 242, 254, 0.08); }
.mtab-cta {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.18), rgba(79, 172, 254, 0.15));
  color: #ffffff;
}
.mtab-cta.active { color: var(--color-primary); }

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: rgba(0, 0, 0, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  transition: opacity 0.22s ease;
  overscroll-behavior: contain;
  overscroll-behavior-x: contain;
  touch-action: none;
  -webkit-overflow-scrolling: auto;
}
.lightbox[hidden] { display: none; }
.lightbox.lightbox-show { opacity: 1; }

.lightbox-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  touch-action: manipulation;
  cursor: zoom-out;
}
.lightbox-caption {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  color: #ffffff;
  font-size: 13px;
  background: rgba(0, 0, 0, 0.6);
  padding: 6px 12px;
  border-radius: 20px;
  max-width: 90%;
  text-align: center;
  pointer-events: none;
}
.lightbox-caption:empty { display: none; }
.lightbox-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: none;
  color: #ffffff;
  font-size: 26px;
  cursor: pointer;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.15s ease;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.26); transform: rotate(90deg); }

/* 让可放大的图片指针提示 */
.mat-card-img,
.case-bg-img,
.post-card-img,
.visual-img,
.gallery-card {
  cursor: zoom-in;
}

/* ==========================================================================
   v0.1.8 · Design Polish（ui-ux-pro-max：Cinema Dark 卡片语言 + 统一交互态 + 入场动画）
   ========================================================================== */

/* ---- 卡片统一语言：发丝边框 + 顶边高光 + 悬浮上升辉光 ---- */
.material-card,
.case-card,
.post-card,
.tech-tabs-container,
.material-table-wrap,
.contact-form-panel {
  border-color: var(--border-hairline);
  box-shadow: var(--shadow-card), var(--edge-highlight);
}

.material-card,
.case-card,
.post-card {
  transition: transform 0.45s var(--easing-expo),
              box-shadow 0.45s var(--easing-expo),
              border-color 0.45s var(--easing-expo);
}

.material-card:hover,
.case-card:hover,
.post-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: var(--shadow-card-hover), var(--edge-highlight);
}

/* ---- 按钮统一交互态：按压回缩 + 键盘焦点环 ---- */
.btn {
  border-radius: 10px;
}
.btn:active,
.promo-cta:active,
.mtab:active {
  transform: scale(0.97);
}
.btn:focus-visible,
.filter-btn:focus-visible,
.tab-btn:focus-visible,
.mtab:focus-visible,
.promo-cta:focus-visible,
.promo-close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.btn-glow {
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.28), 0 0 0 1px rgba(0, 242, 254, 0.25);
}
.btn-glow:hover {
  box-shadow: 0 8px 28px rgba(0, 242, 254, 0.4), 0 0 0 1px rgba(0, 242, 254, 0.45);
}

/* ---- 板块顶部发光分隔线：制造清晰的章节节奏 ---- */
.about-section,
.tech-section,
.material-section,
.case-section,
.contact-section {
  position: relative;
}
.about-section::before,
.tech-section::before,
.material-section::before,
.case-section::before,
.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(680px, 82%);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 254, 0.35), transparent);
  pointer-events: none;
}

/* ---- Hero 主 CTA 加大加亮：全页唯一的第一动作 ---- */
.hero-actions .btn-glow {
  padding: 1rem 2.3rem;
  font-size: 1.05rem;
  border-radius: 12px;
}

/* ---- Hero 视觉卡：悬浮轻微上浮 + 呼吸光边 ---- */
.visual-card {
  transition: transform 0.6s var(--easing-expo), box-shadow 0.6s var(--easing-expo);
}
.visual-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 60px rgba(0, 242, 254, 0.18);
}

/* ---- Footer 精修：hairline 顶线 + 呼吸空间 ---- */
.site-footer {
  border-top: 1px solid var(--border-hairline);
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
}

/* ---- 板块标题：下划条渐变呼吸 ---- */
.title-bar {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-primary));
  background-size: 200% 100%;
  animation: title-bar-sheen 4s ease-in-out infinite;
}
@keyframes title-bar-sheen {
  0%, 100% { background-position: 0% 0; }
  50%      { background-position: 100% 0; }
}

/* ---- 滚动入场（JS initScrollReveal 配合；transform/opacity only，reduced-motion 全禁） ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--easing-expo), transform 0.7s var(--easing-expo);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.reveal-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after,
  .badge::before,
  .title-bar {
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   响应式断点 (RESPONSIVE)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 3rem;
  }
  
  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .tab-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .post-grid {
    grid-template-columns: 1fr;
  }
  
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .analyzer-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* 移动端可隐藏或点击展开，此处为了保持轻量纯 HTML 先隐藏 */
  }
  
  .material-grid {
    grid-template-columns: 1fr;
  }
  
  .case-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .contact-form-panel {
    padding: 2rem;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  /* v0.1.9 Promo Bar 移动端强制单行（两行会把 header 顶下来遮住首屏标题） */
  .promo-bar-inner {
    font-size: 0.82rem;
    gap: 0.5rem;
    padding: 0.35rem 0.6rem;
    flex-wrap: nowrap;
  }
  .promo-text {
    flex: 1 1 auto;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .promo-more { display: none; } /* 手机隐藏后半句，保单行 */
  .promo-cta  { padding: 0.3rem 0.7rem; font-size: 0.78rem; flex-shrink: 0; }
  .promo-close { flex-shrink: 0; }
  .promo-icon { display: none; }

  /* Toast 手机端从底部弹起（再上移让位底部导航） */
  .toast-container {
    left: 1rem;
    right: 1rem;
    bottom: calc(72px + env(safe-area-inset-bottom));
  }
  .toast { min-width: 0; max-width: 100%; }

  /* --- v0.1.1.5 手机端启用底部切片导航 --- */
  .mobile-tab-nav { display: flex; }

  /* 页面主体给底部导航留空间（底部 nav ~68px + 12px 呼吸 + safe-area），避免版本徽章 / 最后一个 section 被挡 */
  body { padding-bottom: calc(90px + env(safe-area-inset-bottom)); }

  /* v0.1.9 · 用户定规：切片不允许横滑，全部换行完整显示 */
  .filter-tabs {
    flex-wrap: wrap;
    overflow-x: visible;
    justify-content: center;
  }
  .filter-btn {
    white-space: nowrap;
  }

  /* 工艺 SLA/SLS/MJF/SLM：手机改 2×2 网格，四个一屏全见、无需滑动 */
  .tabs-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    overflow-x: visible;
    padding-bottom: 0;
    border-bottom: none;
  }
  .tab-btn {
    width: 100%;
    text-align: center;
    padding: 0.7rem 0.5rem;
    border: 1px solid var(--border-hairline);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.95rem;
  }
  .tab-btn.active {
    border-color: var(--color-primary);
    background: rgba(0, 242, 254, 0.08);
  }
  /* 桌面用的下划线指示器在网格布局下会飘走，手机端关掉 */
  .tab-btn.active::after {
    display: none;
  }

  /* --- v0.1.8 · 手机端纵向堆叠（用户定规：页面禁止左右滑，仅显示不完的模块允许横滑） ---
     卡片网格全部单列纵向；允许横滑的只有三处真溢出模块：
     物性数据表(.table-responsive-container) / 工艺 tabs(.tabs-nav) / 材料筛选(.filter-tabs) */

  .material-grid,
  .case-grid,
  .post-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .analyzer-section {
    padding-top: 2.2rem;
  }

  .analyzer-panel {
    border-radius: 20px;
    padding: 1.15rem;
  }

  .analyzer-upload-panel h3,
  .analyzer-result-head strong {
    font-size: 1.16rem;
  }

  .dropzone {
    min-height: 220px;
    padding: 1.2rem;
  }

  .dropzone strong {
    font-size: 1rem;
  }

  .dropzone span,
  .analyzer-summary,
  .analyzer-meta span {
    font-size: 0.84rem;
  }

  .analyzer-stats {
    grid-template-columns: 1fr;
  }

  .analyzer-actions .btn {
    width: 100%;
  }

  .gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  /* Hero 数据统计：三项等分一行，不滚动 */
  .hero-stats {
    justify-content: center;
    gap: 1.5rem;
    overflow-x: visible;
  }

  /* 手机端隐藏顶部导航菜单文字项（改用底部切片导航） */
  .nav-menu { display: none; }
}

/* 页面级防左右晃：任何意外溢出都不允许把整页撑出横向滚动条 */
html, body {
  overflow-x: hidden;
}

body.lightbox-open {
  overscroll-behavior-x: none;
  touch-action: none;
}

/* 尊重减慢动画设置 */
@media (prefers-reduced-motion: reduce) {
  .scanner-line {
    animation: none;
    display: none;
  }
  
  #wechat-popover,
  .btn,
  .nav-item,
  .material-card,
  .case-card,
  .post-card {
    transition: none !important;
    transform: none !important;
  }
}

/* ==========================================================================
   物性数据对比表样式 (Interactive Data Table Styles)
   ========================================================================== */
.material-table-wrap {
  margin-top: 5rem;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.mat-table-title {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.mat-table-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.table-controls {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1.5rem;
}

.table-search-group {
  position: relative;
  max-width: 360px;
  width: 100%;
}

.table-search-group input {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  border-radius: 30px;
  color: #ffffff;
  font-size: 0.85rem;
  transition: var(--transition-smooth);
  width: 100%;
}

.table-search-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.table-responsive-container {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.mat-data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.mat-data-table th,
.mat-data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  white-space: nowrap;
}

.mat-data-table th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--color-secondary);
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.mat-data-table tbody tr {
  transition: var(--transition-smooth);
}

.mat-data-table tbody tr:hover {
  background-color: rgba(0, 242, 254, 0.03);
}

.mat-data-table th.sticky-col,
.mat-data-table td.sticky-col {
  position: -webkit-sticky;
  position: sticky;
  left: 0;
  background-color: #11182c; /* match card background */
  z-index: 1;
  font-weight: 600;
  color: #ffffff;
  border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.mat-data-table tbody tr:hover td.sticky-col {
  background-color: #16203a;
}

/* ============================================================================
   v0.1.9.1 · 手机端专项精修：小字、节奏、物性表卡片化
   只影响 <=768px；桌面视觉保持 v0.1.9 稳定版。
   ============================================================================ */
.material-mobile-cards {
  display: none;
}

@media (max-width: 768px) {
  .container {
    padding-left: 0.82rem;
    padding-right: 0.82rem;
  }

  .qr-code-wrapper {
    padding: 0.65rem;
    margin-bottom: 1rem;
  }

  .qr-image {
    width: min(84vw, 300px);
    max-width: 100%;
  }

  .wechat-id-copy {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.55rem;
    width: 100%;
    padding: 0.72rem 0.85rem;
    border-radius: 16px;
    font-size: 0.82rem;
    text-align: center;
  }

  .btn-copy {
    width: 100%;
    min-height: 40px;
  }

  .site-header .header-container {
    height: 58px;
  }

  .logo-svg {
    height: 29px;
  }

  .header-actions .btn {
    min-height: 40px;
    padding: 0.5rem 0.72rem;
    font-size: 0.78rem;
    border-radius: 9px;
  }

  .hero-section {
    min-height: auto;
    padding-top: 108px;
    padding-bottom: 44px;
  }

  body.has-promo .hero-section {
    padding-top: 122px;
  }

  .hero-grid {
    gap: 1.15rem;
    text-align: left;
  }

  .hero-content h1 {
    font-size: clamp(1.82rem, 8.8vw, 2.3rem);
    line-height: 1.08;
    margin-bottom: 0.28rem;
  }

  .hero-content h2 {
    font-size: 0.96rem;
    line-height: 1.35;
    margin-bottom: 0.68rem;
  }

  .hero-content p {
    font-size: 0.86rem;
    line-height: 1.58;
    margin-bottom: 1rem;
    max-width: none;
  }

  .badge {
    font-size: 0.62rem;
    padding: 0.2rem 0.56rem;
    margin-bottom: 1rem;
  }

  .hero-stats {
    width: 100%;
    justify-content: space-between;
    gap: 0.4rem;
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
  }

  .stat-mini .stat-num {
    font-size: 1.18rem;
  }

  .stat-mini .stat-label {
    font-size: 0.62rem;
    line-height: 1.18;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.58rem;
  }

  .hero-actions .btn,
  .hero-actions .btn-glow {
    width: 100%;
    min-height: 42px;
    padding: 0.64rem 0.92rem;
    font-size: 0.86rem;
  }

  .hero-proof-strip {
    justify-content: flex-start;
    gap: 0.45rem;
  }

  .hero-proof-strip span {
    font-size: 0.72rem;
    padding: 0.36rem 0.55rem;
  }

  .visual-card {
    border-radius: 16px;
  }

  .visual-telemetry {
    left: 0.7rem;
    right: 0.7rem;
    bottom: 0.7rem;
    padding: 0.62rem 0.72rem;
  }

  .visual-telemetry strong {
    font-size: 0.9rem;
  }

  .visual-telemetry span:last-child {
    font-size: 0.7rem;
  }

  .about-section,
  .trust-section,
  .tech-section,
  .material-section,
  .case-section,
  .contact-section {
    padding-top: 46px;
    padding-bottom: 46px;
  }

  .section-title-wrap {
    margin-bottom: 1.35rem;
  }

  .sub-title {
    font-size: 0.66rem;
    letter-spacing: 0.12em;
  }

  .section-title,
  .contact-info-panel h2 {
    font-size: clamp(1.28rem, 5.6vw, 1.68rem);
    line-height: 1.22;
  }

  .about-text h3,
  .tab-info h3,
  .mat-table-title,
  .contact-form-panel h3 {
    font-size: 1.08rem;
    line-height: 1.28;
  }

  .about-text p,
  .tech-desc,
  .material-intro p,
  .case-content p,
  .contact-info-panel p,
  .contact-form-panel p,
  .feature-item span,
  .gallery-info p,
  .mat-table-subtitle {
    font-size: 0.82rem;
    line-height: 1.55;
  }

  .features-list,
  .contact-details {
    gap: 0.82rem;
  }

  .feature-item {
    gap: 0.75rem;
  }

  .feature-item strong {
    font-size: 0.95rem;
  }

  .tech-tabs-container,
  .material-table-wrap,
  .contact-form-panel {
    padding: 0.88rem;
    border-radius: 14px;
  }

  .tab-btn {
    font-size: 0.8rem;
    padding: 0.58rem 0.36rem;
  }

  .tech-specs li {
    font-size: 0.8rem;
    line-height: 1.45;
  }

  .filter-tabs {
    justify-content: flex-start;
    gap: 0.55rem;
  }

  .filter-btn {
    font-size: 0.76rem;
    padding: 0.48rem 0.72rem;
  }

  .mat-card-content {
    padding: 0.88rem;
  }

  .mat-header {
    align-items: flex-start;
  }

  .mat-header h4 {
    font-size: 0.92rem;
    line-height: 1.3;
  }

  .mat-desc,
  .mat-apps,
  .mat-specs {
    font-size: 0.74rem;
    line-height: 1.45;
  }

  .mat-specs {
    display: flex;
    justify-content: flex-start;
    gap: 0.4rem;
    align-items: center;
  }

  .mat-specs span {
    min-width: 0;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .case-card {
    min-height: 248px;
    padding: 1.05rem;
    border-radius: 14px;
  }

  .case-content h4 {
    font-size: 0.98rem;
    line-height: 1.22;
  }

  .case-meta span {
    font-size: 0.68rem;
  }

  .contact-card,
  .contact-card-btn {
    padding: 0.88rem;
    gap: 0.72rem;
  }

  .contact-text .value {
    font-size: 0.86rem;
    line-height: 1.28;
  }

  .form-group label {
    font-size: 0.76rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 0.84rem;
    padding: 0.72rem 0.82rem;
  }

  /* 手机端不再使用 Excel 宽表，改为纵向卡片，避免“完全没法看” */
  .table-responsive-container {
    display: none;
  }

  .material-mobile-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .mobile-material-empty {
    padding: 1rem;
    border-radius: 14px;
    color: var(--color-text-muted);
    text-align: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-hairline);
    font-size: 0.88rem;
  }

  .mobile-material-card {
    padding: 0.9rem;
    border-radius: 14px;
    background: rgba(21, 30, 54, 0.72);
    border: 1px solid var(--border-hairline);
    box-shadow: var(--edge-highlight), 0 10px 24px rgba(0, 0, 0, 0.22);
  }

  .mobile-material-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.82rem;
  }

  .mobile-material-head strong {
    font-size: 0.9rem;
    line-height: 1.32;
  }

  .mobile-material-specs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.58rem;
  }

  .mobile-material-specs div {
    min-width: 0;
    padding: 0.58rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.055);
  }

  .mobile-material-specs dt {
    margin-bottom: 0.16rem;
    color: var(--color-text-muted);
    font-size: 0.66rem;
  }

  .mobile-material-specs dd {
    margin: 0;
    color: #ffffff;
    font-size: 0.74rem;
    font-weight: 750;
    line-height: 1.28;
    overflow-wrap: anywhere;
  }

  .table-controls {
    justify-content: stretch;
  }

  .table-search-group {
    max-width: none;
  }

  .footer-version {
    position: static;
    margin-top: 0.8rem;
  }

  .mobile-tab-nav {
    padding: 0.32rem 0.35rem calc(0.5rem + env(safe-area-inset-bottom));
    gap: 0.2rem;
  }

  .mtab {
    min-width: 0;
    padding: 0.46rem 0.28rem;
    border-radius: 12px;
  }

  .mtab svg {
    width: 18px;
    height: 18px;
  }

  .mtab span {
    font-size: 0.68rem;
    line-height: 1.1;
  }
}

@media (max-width: 768px) {
  html,
  body {
    overscroll-behavior-x: none;
  }

  body {
    touch-action: pan-y pinch-zoom;
  }

  .table-responsive-container {
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
  }
}