/* 现代风格关于页面样式 - 全新酷炫版 */

/* 现代化配色和样式变量 - 更新为更时尚的配色 */
:root {
  /* 主色调更新为渐变蓝紫色调 */
  --modern-primary: #4f46e5;
  --modern-primary-light: #818cf8;
  --modern-primary-dark: #4338ca;
  --modern-secondary: #ec4899;
  --modern-secondary-light: #f472b6;
  --modern-accent: #06b6d4;
  --modern-dark: #0f172a;
  --modern-light: #f8fafc;
  --modern-white: #ffffff;
  --modern-text: #1e293b;
  --modern-text-light: #64748b;

  /* 更现代的渐变 */
  --modern-gradient: linear-gradient(135deg, #4f46e5, #7c3aed);
  --modern-gradient-alt: linear-gradient(135deg, #ec4899, #7c3aed);
  --modern-gradient-bright: linear-gradient(135deg, #06b6d4, #818cf8);

  /* 玻璃态效果 */
  --modern-glass: rgba(255, 255, 255, 0.1);
  --modern-glass-border: rgba(255, 255, 255, 0.15);
  --modern-glass-dark: rgba(15, 23, 42, 0.7);

  /* 阴影和动画 */
  --modern-card-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
  --modern-card-shadow-hover: 0 20px 40px rgba(15, 23, 42, 0.15);
  --modern-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --modern-border-radius: 16px;
  --modern-font: "Noto Sans SC", "Poppins", sans-serif;
}

/* 全局样式 */
.modern-theme {
  font-family: var(--modern-font);
  color: var(--modern-text);
  background-color: var(--modern-light);
  overflow-x: hidden;
}

.modern-theme main {
  position: relative;
}

/* 添加全局背景网格图案 */
.modern-theme::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 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='none' fill-rule='evenodd'%3E%3Cg fill='%234f46e5' fill-opacity='0.03'%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/g%3E%3C/svg%3E");
  z-index: -1;
  opacity: 0.5;
}

/* 通用section header样式 - 更醒目 */
.section-header {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  z-index: 2;
}

.section-badge {
  background: var(--modern-gradient-alt);
  color: white;
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 15px;
  box-shadow: 0 10px 20px rgba(236, 72, 153, 0.2);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--modern-dark);
  position: relative;
  background-image: var(--modern-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  display: inline-block;
}

.title-separator {
  width: 80px;
  height: 5px;
  background: var(--modern-gradient);
  margin: 0 auto 20px;
  border-radius: 3px;
}

.section-subtitle {
  max-width: 700px;
  margin: 0 auto;
  color: var(--modern-text-light);
  font-size: 1.2rem;
  line-height: 1.7;
}

/* 通用按钮样式 - 更加现代 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-decoration: none;
  gap: 8px;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(-100%) rotate(45deg);
  transition: transform 0.6s;
  z-index: -1;
}

.btn:hover::before {
  transform: translateX(100%) rotate(45deg);
}

.btn-primary {
  background: var(--modern-gradient);
  color: white;
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 15px 30px rgba(79, 70, 229, 0.4);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: white;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: white;
  color: var(--modern-primary);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 英雄区域现代化样式 - 更具冲击力 */
.about-hero {
  background: var(--modern-gradient);
  position: relative;
  overflow: hidden;
  padding: 200px 0 140px;
  z-index: 1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

/* 添加几何装饰元素 */
.hero-shape-1,
.hero-shape-2,
.hero-shape-3 {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  z-index: 0;
}

.hero-shape-1 {
  width: 500px;
  height: 500px;
  top: -200px;
  right: -150px;
  animation: floatAnimation 10s ease-in-out infinite alternate;
}

.hero-shape-2 {
  width: 300px;
  height: 300px;
  bottom: -100px;
  left: -100px;
  animation: floatAnimation 15s ease-in-out infinite alternate-reverse;
}

.hero-shape-3 {
  width: 200px;
  height: 200px;
  top: 40%;
  right: 15%;
  border-radius: 46% 54% 46% 54% / 36% 50% 50% 64%;
  animation: floatAnimation 8s ease-in-out infinite alternate;
}

@keyframes floatAnimation {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  100% {
    transform: translate(20px, 20px) rotate(10deg);
  }
}

.about-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
  color: white;
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 1.1rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  letter-spacing: 1px;
}

.about-hero-content h2 {
  font-size: 5rem;
  font-weight: 900;
  color: white;
  margin-bottom: 2rem;
  text-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  line-height: 1.1;
  letter-spacing: -1px;
}

.about-hero-content p {
  font-size: 1.6rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto 50px;
  line-height: 1.5;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-shape {
  position: absolute;
  width: 100%;
  height: 150px;
  bottom: -1px;
  left: 0;
}

.hero-shape.bottom {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23f8fafc' fill-opacity='1' d='M0,224L48,213.3C96,203,192,181,288,186.7C384,192,480,224,576,218.7C672,213,768,171,864,160C960,149,1056,171,1152,176C1248,181,1344,171,1392,165.3L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
}

/* 使命部分现代化样式 - 更优雅 */
.section {
  padding: 120px 0;
  position: relative;
}

.section-mission {
  background: linear-gradient(180deg, #eef2ff 0%, var(--modern-light) 50%, #eef2ff 100%);
  position: relative;
}

.mission-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.mission-text {
  background: var(--modern-white);
  border-radius: var(--modern-border-radius);
  box-shadow: var(--modern-card-shadow);
  padding: 50px;
  border: none;
  position: relative;
  overflow: hidden;
}

.mission-text::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--modern-gradient);
}

.mission-text p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: var(--modern-text);
  font-size: 1.05rem;
}

.mission-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

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

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  background: var(--modern-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}

.stat-text {
  color: var(--modern-text-light);
  font-size: 1rem;
  font-weight: 600;
}

.mission-image {
  border-radius: var(--modern-border-radius);
  box-shadow: var(--modern-card-shadow);
  overflow: hidden;
  position: relative;
  height: 450px;
  border: none;
  background: var(--modern-primary);
  transform: rotate(2deg);
  transition: var(--modern-transition);
}

.mission-image:hover {
  transform: rotate(0);
  box-shadow: var(--modern-card-shadow-hover);
}

.image-placeholder {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  font-weight: 500;
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(79, 70, 229, 0.2),
    rgba(124, 58, 237, 0.4)
  );
  z-index: 1;
}

/* 技术栈部分 - 更现代格栅布局 */
.section-tech {
  background-color: var(--modern-white);
  position: relative;
}

.tech-stack-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  position: relative;
  z-index: 2;
}

.tech-card {
  background: var(--modern-light);
  border-radius: var(--modern-border-radius);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--modern-card-shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: "";
  position: absolute;
  top: -100px;
  left: -100px;
  width: 200px;
  height: 200px;
  background: linear-gradient(
    135deg,
    rgba(79, 70, 229, 0.1),
    rgba(124, 58, 237, 0.05)
  );
  border-radius: 50%;
  z-index: 0;
}

.tech-card:hover {
  transform: translateY(-15px);
  box-shadow: var(--modern-card-shadow-hover);
}

.tech-icon {
  font-size: 3.5rem;
  background: var(--modern-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 25px;
  position: relative;
  z-index: 1;
  display: inline-block;
}

.tech-card h3 {
  margin-bottom: 15px;
  color: var(--modern-dark);
  font-weight: 700;
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
}

.tech-card p {
  color: var(--modern-text-light);
  position: relative;
  z-index: 1;
}

/* 团队成员现代化样式 - 更紧凑的网格布局 */
.section-team {
  background-color: var(--modern-light);
  position: relative;
  overflow: hidden;
}

.section-team::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%234f46e5' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
  top: 0;
  left: 0;
  opacity: 0.5;
  z-index: 0;
}

.team-container {
  position: relative;
  z-index: 2;
}

/* 修改团队领导样式 */
.team-leader {
  display: flex;
  justify-content: center;
  margin-bottom: 80px;
  position: relative;
}

.team-leader::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: var(--modern-gradient);
  border-radius: 2px;
}

.team-leader .team-member-card {
  max-width: 350px;
  transform: scale(1.1);
  box-shadow: 0 25px 50px rgba(15, 23, 42, 0.15);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(79, 70, 229, 0.1);
}

/* 修改团队成员布局 - 紧凑网格 */
.team-members {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 30px;
  position: relative;
}

.team-member-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(5px);
  border-radius: 20px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: var(--modern-card-shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid rgba(79, 70, 229, 0.1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.team-member-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at center,
    rgba(79, 70, 229, 0.1),
    transparent 70%
  );
  transform: scale(0);
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 0;
}

.team-member-card:hover {
  transform: translateY(-15px) scale(1.05);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.15);
  z-index: 2;
}

.team-member-card:hover::before {
  transform: scale(1);
}

.team-member-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--modern-gradient);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-origin: left;
}

.team-member-card:hover::after {
  transform: scaleX(1);
}

/* 头像效果增强 */
.team-member-avatar {
  width: 100px;
  height: 100px;
  margin: 0 auto 20px;
  border-radius: 20px;
  overflow: hidden;
  background: var(--modern-gradient);
  position: relative;
  border: none;
  box-shadow: 0 15px 30px rgba(79, 70, 229, 0.3);
  transform: rotate(0deg);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.team-member-card:hover .team-member-avatar {
  transform: rotate(5deg) scale(1.1);
  border-radius: 30px;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--modern-gradient);
  position: relative;
  overflow: hidden;
}

.avatar-placeholder::after {
  content: "";
  position: absolute;
  width: 150%;
  height: 150%;
  top: -25%;
  left: -25%;
  background: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(45deg) translateX(-100%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% {
    transform: rotate(45deg) translateX(-100%);
  }
  100% {
    transform: rotate(45deg) translateX(100%);
  }
}

.team-member-card h3 {
  margin-bottom: 10px;
  color: var(--modern-dark);
  font-weight: 700;
  font-size: 1.2rem;
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease;
}

.team-member-card:hover h3 {
  transform: scale(1.05);
  color: var(--modern-primary);
}

.team-member-title {
  color: var(--modern-text-light);
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 5px 15px;
  background: rgba(79, 70, 229, 0.08);
  border-radius: 20px;
  transition: all 0.3s ease;
}

.team-member-card:hover .team-member-title {
  background: var(--modern-gradient);
  color: white;
  box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}

/* 项目展示现代化样式 */
.section-projects {
  background-color: var(--modern-light);
  position: relative;
}

.project-showcase {
  position: relative;
  z-index: 2;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--modern-card-shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid rgba(79, 70, 229, 0.08);
}

.project-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.12);
}

.project-image {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--modern-primary),
    var(--modern-secondary)
  );
  position: relative;
  overflow: hidden;
}

.project-tags {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  z-index: 1;
}

.project-tags span {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  letter-spacing: 0.5px;
}

.project-info {
  padding: 60px;
  display: flex;
  flex-direction: column;
}

.project-info h3 {
  color: var(--modern-dark);
  margin-bottom: 20px;
  font-weight: 800;
  font-size: 2rem;
  line-height: 1.3;
  position: relative;
  padding-bottom: 15px;
}

.project-info h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 4px;
  background: var(--modern-gradient);
  border-radius: 2px;
}

.project-info p {
  margin-bottom: 20px;
  color: var(--modern-text-light);
  line-height: 1.8;
  font-size: 1.05rem;
}

.project-features {
  display: flex;
  gap: 20px;
  margin: 30px 0;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--modern-text);
  font-weight: 600;
  background: rgba(79, 70, 229, 0.08);
  padding: 10px 20px;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.feature-item:hover {
  background: var(--modern-gradient);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.2);
}

.feature-item i {
  color: var(--modern-primary);
  font-size: 1.3rem;
}

.feature-item:hover i {
  color: white;
}

.project-info .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* 学校认可样式 */
.section-recognition {
  background-color: var(--modern-light);
  position: relative;
}

.recognition-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.recognition-highlight {
  margin-bottom: 40px;
}

.recognition-award {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  color: var(--modern-primary);
  margin-bottom: 16px;
}

.recognition-award i {
  font-size: 1.5rem;
  color: #f59e0b;
}

.recognition-desc {
  font-size: 0.95rem;
  color: var(--modern-text-light);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
}

.recognition-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.recognition-img-card {
  border-radius: var(--modern-border-radius);
  overflow: hidden;
  background: var(--modern-white);
  box-shadow: var(--modern-card-shadow);
  transition: var(--modern-transition);
}

.recognition-img-card:hover {
  box-shadow: var(--modern-card-shadow-hover);
  transform: translateY(-4px);
}

.recognition-img-card img {
  width: 100%;
  height: auto;
  display: block;
}

.recognition-caption {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--modern-text-light);
  margin: 0;
}

.recognition-source {
  margin-top: 8px;
}

.recognition-source .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

@media (max-width: 768px) {
  .recognition-images {
    grid-template-columns: 1fr;
  }
}

/* 联系我们现代化样式 */
.section-contact {
  background-color: var(--modern-white);
  position: relative;
}

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

.contact-methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.contact-method {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 50px 30px;
  text-align: center;
  box-shadow: var(--modern-card-shadow);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(79, 70, 229, 0.08);
}

.contact-method::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: var(--modern-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
  transform-origin: right;
}

.contact-method:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.contact-method:hover {
  transform: translateY(-15px);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.1);
}

.contact-method i {
  font-size: 4rem;
  background: var(--modern-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 25px;
  display: inline-block;
}

.contact-method h3 {
  margin-bottom: 15px;
  color: var(--modern-dark);
  font-weight: 700;
  font-size: 1.5rem;
}

.contact-method p {
  color: var(--modern-text);
  font-size: 1.1rem;
}

a.contact-method {
  text-decoration: none;
  display: block;
  color: inherit;
  cursor: pointer;
}

a.contact-method:hover h3 {
  color: var(--modern-primary);
}

/* 页脚现代化 */
.footer {
  background: var(--modern-dark);
  color: white;
  position: relative;
}

.footer-top {
  padding: 100px 0 60px;
  background: linear-gradient(to bottom, var(--modern-dark), #090e1a);
  position: relative;
  overflow: hidden;
}

.footer-top::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 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='none' fill-rule='evenodd'%3E%3Cg fill='%234f46e5' fill-opacity='0.1'%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/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
}

.footer-brand h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #818cf8, #ec4899);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 30px;
  max-width: 350px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 15px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  font-size: 1.2rem;
}

.footer-social a:hover {
  background: var(--modern-gradient);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.footer-links-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.footer-links h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 25px;
  color: white;
  position: relative;
  padding-bottom: 15px;
}

.footer-links h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--modern-gradient);
  border-radius: 3px;
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 15px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
  font-size: 1.05rem;
}

.footer-links a:hover {
  color: var(--modern-primary-light);
  transform: translateX(5px);
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.3);
  padding: 25px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.6);
}

/* 淡入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 0.2s;
}

.delay-2 {
  transition-delay: 0.4s;
}

.delay-3 {
  transition-delay: 0.6s;
}

.delay-4 {
  transition-delay: 0.8s;
}

/* 响应式调整 */
@media (max-width: 1200px) {
  .mission-content {
    grid-template-columns: 1fr;
  }

  .mission-image {
    height: 350px;
  }

  .section {
    padding: 100px 0;
  }

  /* 团队成员变为4列 */
  .team-members {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 992px) {
  .about-hero-content h2 {
    font-size: 3.5rem;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-image {
    height: 350px;
  }

  .project-info {
    padding: 40px 30px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  /* 团队成员变为3列 */
  .team-members {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .about-hero-content h2 {
    font-size: 2.8rem;
  }

  .section {
    padding: 80px 0;
  }

  .mission-content {
    gap: 30px;
  }

  .footer-links-group {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .section-title {
    font-size: 2.5rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .contact-cta {
    padding: 60px 30px;
  }

  /* 团队成员变为2列 */
  .team-members {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-leader {
    margin-bottom: 60px;
  }

  .team-leader .team-member-card {
    transform: none;
    max-width: 280px;
  }

  .team-member-avatar {
    width: 90px;
    height: 90px;
  }
}

@media (max-width: 576px) {
  .about-hero {
    padding: 160px 0 100px;
  }

  .about-hero-content h2 {
    font-size: 2.2rem;
  }

  .mission-text,
  .project-info {
    padding: 30px 20px;
  }

  .tech-stack-container {
    grid-template-columns: 1fr;
  }

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

  .project-features {
    flex-direction: column;
    gap: 15px;
  }

  .mission-stats {
    flex-direction: column;
    gap: 20px;
  }

  /* 团队成员变为1列 */
  .team-members {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
  }

  .avatar-placeholder {
    font-size: 1.5rem;
  }
}

/* 现代使命版块样式 */
.mission-content-modern {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.mission-cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.mission-card {
  background: var(--modern-white);
  padding: 40px 30px;
  border-radius: var(--modern-border-radius);
  box-shadow: var(--modern-card-shadow);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.mission-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--modern-gradient);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.mission-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 25px 50px rgba(79, 70, 229, 0.15);
  border-color: rgba(79, 70, 229, 0.2);
}

.mission-card:hover::before {
  opacity: 0.03;
}

.mission-card:nth-child(1) .card-icon {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.mission-card:nth-child(2) .card-icon {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

.mission-card:nth-child(3) .card-icon {
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  box-shadow: 0 10px 20px rgba(139, 92, 246, 0.3);
}

.mission-card .card-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 25px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mission-card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
}

.mission-card h3 {
  font-size: 1.5rem;
  color: var(--modern-dark);
  margin-bottom: 15px;
  font-weight: 700;
}

.mission-card p {
  color: var(--modern-text-light);
  line-height: 1.7;
  font-size: 1.05rem;
}

.mission-stats-modern {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  padding: 40px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #6366f1 100%);
  border-radius: var(--modern-border-radius);
  color: white;
  box-shadow: 0 20px 40px rgba(79, 70, 229, 0.25);
  margin-top: 20px;
  position: relative;
  overflow: hidden;
}

.mission-stats-modern::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%, rgba(255,255,255,0.05) 100%);
  pointer-events: none;
}

.mission-stats-modern .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.mission-stats-modern .stat-number {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 5px;
  font-family: var(--modern-font);
  color: white;
  background: none;
  -webkit-background-clip: unset;
  background-clip: unset;
}

.mission-stats-modern .stat-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
}

.section-mission .mission-card.fade-in {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
}

.section-mission .mission-card.fade-in.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.section-mission .mission-stats-modern.fade-in {
  opacity: 0;
  transform: translateY(30px);
}

.section-mission .mission-stats-modern.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}