/*
 * 晟昱和 3D打印 - 页面特定样式 v2
 * Tech-feel enhanced — 科技感升级版
 */

/* =========================
   0. 全局动画 Keyframes
   ========================= */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%  { transform: translateY(-12px) rotate(1deg); }
  66%  { transform: translateY(6px) rotate(-1deg); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.4), 0 0 60px rgba(59, 130, 246,0.15); }
  50%      { box-shadow: 0 0 35px rgba(59, 130, 246, 0.55), 0 0 90px rgba(59, 130, 246,0.30); }
}

@keyframes scan-line {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(300%); }
}

@keyframes orbit {
  0%   { transform: rotate(0deg) translateX(120px) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(120px) rotate(-360deg); }
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0); }
  25%  { transform: translate(30px, -20px); }
  50%  { transform: translate(-10px, 15px); }
  75%  { transform: translate(-25px, -10px); }
}

@keyframes dash-flow {
  0%   { stroke-dashoffset: 200; }
  100% { stroke-dashoffset: 0; }
}

@keyframes hex-rotate {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes counter-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================
   1. 英雄区 Hero — 科技感升级
   ========================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-height);
  background: var(--gradient-hero);
  overflow: hidden;
}

/* 动画网格背景 */
.hero::before {
  content: '';
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: drift 20s linear infinite;
  transform: rotate(-5deg) scale(1.5);
  pointer-events: none;
  z-index: 0;
}

/* 科技感光圈 */
.hero::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246,0.10) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
  animation: pulse-glow 4s ease-in-out infinite;
}

/* 右侧几何光圈 */
.hero .container::before {
  content: '';
  position: absolute;
  right: -10%;
  top: 25%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* 科技线 */
.tech-line-h {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246,0.25), transparent);
  width: 300px;
  pointer-events: none;
  z-index: 0;
}

.tech-line-v {
  position: absolute;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(59, 130, 246,0.25), transparent);
  height: 200px;
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

/* 英雄区角标 — 科技感脉冲 */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: var(--primary-300);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(12px);
  animation: pulse-glow 3s ease-in-out infinite;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-500);
  box-shadow: 0 0 10px var(--accent-500);
  animation: pulse-glow 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: var(--font-extrabold);
  line-height: 1.1;
  color: #ffffff;
  margin-bottom: var(--space-6);
  letter-spacing: -0.03em;
  text-shadow: 0 2px 40px rgba(59, 130, 246,0.3);
}

.hero-title .brand-name {
  background: linear-gradient(135deg, var(--primary-400) 0%, var(--accent-400) 50%, #ff8c42 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 20px rgba(59, 130, 246,0.35));
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-8);
  line-height: 1.7;
  max-width: 600px;
  border-left: 3px solid var(--primary-500);
  padding-left: var(--space-5);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-actions .btn-secondary {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
}

.hero-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}

.hero-stats {
  display: flex;
  gap: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.08);
}

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

.hero-stat-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: #ffffff;
  text-shadow: 0 0 20px rgba(59, 130, 246,0.35);
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-1);
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
  .hero-subtitle { font-size: var(--text-base); }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-stats { flex-wrap: wrap; gap: var(--space-6); }
}

/* 英雄区3D几何展示 - 增强 */
.hero-3d-showcase {
  position: absolute;
  right: 3%;
  top: 50%;
  transform: translateY(-50%);
  width: 450px;
  height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 1;
}

.hero-3d-showcase .pillar-group {
  display: flex;
  align-items: flex-end;
  gap: var(--space-6);
  transform: perspective(800px) rotateY(-15deg) rotateX(5deg);
}

.hero-3d-showcase .pillar {
  width: 64px;
  background: linear-gradient(180deg, var(--accent-400) 0%, var(--primary-500) 40%, var(--primary-700) 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 4px 4px;
  box-shadow:
    -6px 0 0 rgba(0, 0, 0, 0.25),
    inset 2px 0 4px rgba(255,255,255,0.1),
    0 0 80px rgba(59, 130, 246, 0.45);
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.hero-3d-showcase .pillar:nth-child(2) { animation-delay: -2s; }
.hero-3d-showcase .pillar:nth-child(3) { animation-delay: -4s; }

.hero-3d-showcase .pillar::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -4px;
  width: calc(100% + 8px);
  height: 36px;
  background: linear-gradient(180deg, var(--accent-300) 0%, var(--accent-400) 100%);
  border-radius: 50% / 60% 60% 40% 40%;
  box-shadow:
    inset 0 -4px 8px rgba(0,0,0,0.15),
    0 4px 12px rgba(59, 130, 246,0.25);
}

.hero-3d-showcase .pillar:nth-child(1) { height: 160px; }
.hero-3d-showcase .pillar:nth-child(2) { height: 280px; }
.hero-3d-showcase .pillar:nth-child(3) { height: 200px; }

/* 3D展示区 — 旋转轨道环 */
.orbit-ring {
  position: absolute;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotateX(60deg);
  pointer-events: none;
}

.orbit-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-400);
  box-shadow: 0 0 10px var(--primary-400);
  top: 50%;
  left: 50%;
  animation: orbit 8s linear infinite;
}

@media (max-width: 1200px) {
  .hero-3d-showcase { opacity: 0.25; }
}

@media (max-width: 1024px) {
  .hero-3d-showcase { display: none; }
}

/* 英雄区装饰几何 */
.hero-decoration {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.hero-decoration .shape {
  position: absolute;
  opacity: 0.04;
  background: var(--gradient-primary);
}

.hero-decoration .shape-1 {
  top: 8%;
  right: 8%;
  width: 100px;
  height: 280px;
  border-radius: var(--radius-lg);
  transform: skewY(-12deg);
  animation: float 8s ease-in-out infinite;
}

.hero-decoration .shape-2 {
  top: 35%;
  right: 22%;
  width: 70px;
  height: 210px;
  border-radius: var(--radius-lg);
  transform: skewY(-12deg);
  animation: float 9s ease-in-out infinite 1s;
}

.hero-decoration .shape-3 {
  top: 55%;
  right: 4%;
  width: 80px;
  height: 240px;
  border-radius: var(--radius-lg);
  transform: skewY(-12deg);
  animation: float 7s ease-in-out infinite 3s;
}

@media (max-width: 1024px) {
  .hero-decoration .shape { opacity: 0.02; }
}

/* =========================
   2. 服务区域 — 玻璃卡片
   ========================= */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  text-align: center;
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(59, 130, 246,0.12), var(--shadow-lg);
  border-color: var(--primary-300);
}

.service-card:hover::before {
  opacity: 0.04;
}

.service-card > * {
  position: relative;
  z-index: 1;
}

.service-card .card-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-2xl);
  background: var(--gradient-primary);
  font-size: var(--text-3xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: var(--space-5);
  box-shadow: 0 8px 32px rgba(59, 130, 246,0.22);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover .card-icon {
  transform: scale(1.1);
  box-shadow: 0 12px 40px rgba(59, 130, 246,0.35);
}

.service-card .card-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
}

.service-card .card-text {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.service-card .card-link {
  font-weight: var(--font-semibold);
  color: var(--primary-500);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-fast);
}

.service-card .card-link:hover {
  gap: var(--space-3);
  color: var(--primary-600);
}

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: var(--space-6); }
}

/* =========================
   3. 打印类型 / 行业 — 发光栅格
   ========================= */
.types-grid,
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.type-card,
.industry-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.type-card::after,
.industry-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.type-card:hover,
.industry-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-400);
  box-shadow: 0 12px 40px rgba(59, 130, 246,0.10);
}

.type-card:hover::after,
.industry-card:hover::after {
  opacity: 0.06;
}

.type-card > *,
.industry-card > * {
  position: relative;
  z-index: 1;
}

.type-icon,
.industry-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: var(--text-2xl);
  box-shadow: 0 4px 16px rgba(59, 130, 246,0.18);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.type-card:hover .type-icon,
.industry-card:hover .industry-icon {
  transform: scale(1.15);
  box-shadow: 0 8px 30px rgba(59, 130, 246,0.30);
}

.type-title,
.industry-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

@media (max-width: 1024px) {
  .types-grid,
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .types-grid,
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .types-grid,
  .industries-grid { grid-template-columns: 1fr 1fr; }
}

/* =========================
   4. 工作流程 — 脉冲步骤 + 动画连接线
   ========================= */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-number {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-4);
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  box-shadow: 0 8px 32px rgba(59, 130, 246,0.22);
  position: relative;
  z-index: 2;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.process-step-number::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(59, 130, 246,0.3);
  animation: pulse-glow 3s ease-in-out infinite;
}

.process-step:hover .process-step-number {
  transform: scale(1.1);
  box-shadow: 0 12px 40px rgba(59, 130, 246,0.35);
}

.process-step-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.process-step-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.process-connector {
  position: absolute;
  top: 36px;
  left: calc(50% + 40px);
  right: calc(-50% + 40px);
  height: 2px;
  background: linear-gradient(90deg, var(--primary-400), var(--primary-300), var(--primary-200));
  opacity: 0.4;
  z-index: 1;
}

.process-connector::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-500);
  box-shadow: 0 0 12px var(--primary-500);
  animation: pulse-glow 2s ease-in-out infinite;
}

@media (max-width: 1024px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-connector { display: none; }
}

@media (max-width: 640px) {
  .process-steps { grid-template-columns: 1fr; }
}

/* =========================
   5. 优势/特点 — 左右布局增强
   ========================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  align-items: center;
}

.feature-list {
  display: grid;
  gap: var(--space-5);
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.feature-item:hover {
  background: var(--bg-elevated);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.feature-item:hover .feature-icon {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(59, 130, 246,0.25);
}

[data-theme="dark"] .feature-icon {
  background: linear-gradient(135deg, var(--primary-900), rgba(59, 130, 246,0.15));
  color: var(--primary-300);
}

[data-theme="dark"] .feature-item:hover {
  background: rgba(255,255,255,0.03);
}

.feature-content h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
  font-weight: var(--font-semibold);
}

.feature-content p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.feature-visual {
  background: var(--gradient-tech);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(59, 130, 246,0.12);
}

.feature-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}

.feature-visual-text {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #ffffff;
}

.feature-visual-text h3 {
  font-size: var(--text-3xl);
  color: #ffffff;
  margin-bottom: var(--space-4);
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.feature-visual-text p {
  color: rgba(255,255,255,0.85);
  font-size: var(--text-lg);
}

/* 视觉效果：3D立方体装饰 */
.feature-cube {
  position: absolute;
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  transform: rotate(45deg);
  animation: float 6s ease-in-out infinite;
}

.feature-cube:nth-child(2) {
  width: 50px;
  height: 50px;
  top: 60%;
  left: 80%;
  animation-delay: -2s;
}

.feature-cube:nth-child(3) {
  width: 35px;
  height: 35px;
  top: 20%;
  left: 70%;
  border-radius: 50%;
  animation-delay: -4s;
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: 1fr; }
  .feature-visual { min-height: 300px; }
}

/* =========================
   6. 案例/新闻 — 发光悬停卡片
   ========================= */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.news-card {
  padding: 0;
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  border-color: var(--primary-200);
}

[data-theme="dark"] .news-card:hover {
  border-color: var(--primary-700);
  box-shadow: 0 20px 60px rgba(59, 130, 246,0.12);
}

.news-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--gradient-tech);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.news-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.3) 100%);
}

.news-card-body {
  padding: var(--space-6);
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.news-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.news-card-excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .news-grid { grid-template-columns: 1fr; }
}

/* =========================
   7. CTA 区域 — 动感粒子背景
   ========================= */
.cta-section {
  background: var(--gradient-tech);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 30%),
    url("data:image/svg+xml,%3Csvg width='30' height='30' viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='15' cy='15' r='1' fill='%23ffffff' fill-opacity='0.08'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* 浮动粒子 */
.cta-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  animation: float 5s ease-in-out infinite;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #ffffff;
}

.cta-content h2 {
  color: #ffffff;
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto var(--space-8);
}

.cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

.cta-actions .btn-secondary {
  background: #ffffff;
  color: var(--primary-600);
  border-color: #ffffff;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.cta-actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-700);
  transform: translateY(-3px);
}

.cta-actions .btn-outline {
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}

.cta-actions .btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}

@media (max-width: 640px) {
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 280px; }
  .cta-content h2 { font-size: var(--text-2xl); }
}

/* =========================
   8. 全局背景纹理
   ========================= */
.section-alt {
  background-color: var(--bg-secondary);
  position: relative;
}

.section-alt::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, var(--primary-500) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.03;
  pointer-events: none;
  z-index: 0;
}

.section-alt .container {
  position: relative;
  z-index: 1;
}

/* 科技感分割线 */
.tech-divider {
  width: 80px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  margin: var(--space-8) auto;
  position: relative;
}

.tech-divider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--primary-300);
  animation: dash-flow 2s linear infinite;
}

/* =========================
   9. 页脚增强
   ========================= */
.site-footer {
  background: linear-gradient(180deg, #0a0e1a 0%, #060912 100%);
  color: var(--gray-300);
  padding-top: var(--space-20);
  padding-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-700), transparent);
  opacity: 0.5;
}

[data-theme="dark"] .site-footer {
  background: linear-gradient(180deg, #050810 0%, #030510 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: #ffffff;
  margin-bottom: var(--space-4);
}

.footer-brand img {
  height: 40px;
  border-radius: var(--radius-md);
}

.footer-desc {
  color: var(--gray-400);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: #ffffff;
  margin-bottom: var(--space-5);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  padding-left: 0;
}

.footer-links a:hover {
  color: var(--primary-400);
  padding-left: var(--space-2);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--gray-400);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.footer-contact-item .icon {
  color: var(--primary-400);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--gray-500);
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
}

/* =========================
   10. 联系表单
   ========================= */
.contact-section {
  background-color: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-12);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: all var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(59, 130, 246,0.18);
}

.contact-card-title {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-1);
}

.contact-card-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.contact-form-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.contact-form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 3px 3px 0 0;
}

@media (max-width: 1024px) {
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .contact-form-card { padding: var(--space-5); }
}

/* =========================
   11. 关于我们
   ========================= */
#about .feature-visual {
  background: var(--gradient-tech);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-2xl);
  min-height: 360px;
}

/* =========================
   12. 区域标题增强
   ========================= */
.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: var(--font-bold);
  text-align: center;
  margin-bottom: var(--space-4);
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-12);
  margin-top: var(--space-6);
}

/* =========================
   13. 滚动动画增强
   ========================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 错开动画延迟 */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal:nth-child(6) { transition-delay: 0.5s; }

/* =========================
   14. 页面标题头
   ========================= */
.page-header {
  padding-top: calc(var(--header-height) + var(--space-16));
  padding-bottom: var(--space-12);
  background: var(--gradient-hero);
  text-align: center;
  color: #ffffff;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.page-header h1 {
  color: #ffffff;
  font-size: var(--text-5xl);
  margin-bottom: var(--space-4);
}

.page-header p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-lg);
  max-width: 700px;
  margin: 0 auto;
}

/* =========================
   15. 管理后台
   ========================= */
.admin-body {
  background-color: var(--bg-secondary);
}

.admin-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-4) 0;
  backdrop-filter: blur(12px);
}

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

.admin-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.admin-title .brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.admin-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 73px);
}

.admin-sidebar {
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  padding: var(--space-6);
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  width: 100%;
}

.admin-nav-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.admin-nav-item.active {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(59, 130, 246,0.22);
}

.admin-main {
  padding: var(--space-8);
  overflow-y: auto;
}

.admin-panel { display: none; }
.admin-panel.active { display: block; }

.admin-panel-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
}

.admin-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.admin-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-color);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: var(--text-sm);
}

.admin-table th {
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
  background-color: var(--bg-tertiary);
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover { background-color: var(--bg-tertiary); }

.admin-actions {
  display: flex;
  gap: var(--space-2);
}

@media (max-width: 1024px) {
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-4);
  }
  .admin-nav { flex-direction: row; flex-wrap: wrap; }
  .admin-main { padding: var(--space-4); }
}

@media (max-width: 768px) {
  .admin-table { display: block; overflow-x: auto; }
}

/* =========================
   16. 模态框
   ========================= */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal.show { display: flex; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
}

.modal-content {
  position: relative;
  background-color: var(--bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1;
}

.modal-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal-body { padding: var(--space-6); }

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* =========================
   17. 登录页
   ========================= */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  padding: var(--space-6);
  position: relative;
}

.login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-8);
  position: relative;
  z-index: 1;
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-header img {
  height: 64px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-lg);
}

.login-header h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.login-header p {
  color: var(--text-muted);
  font-size: var(--text-sm);
}