/* 全局样式 */
:root {
  --primary-color: #212121; /* 深灰色 */
  --secondary-color: #484848; /* 中灰色 */
  --accent-color: #ff4081; /* 鲜明粉色 */
  --dark-color: #000000; /* 黑色 */
  --light-color: #f5f5f5; /* 浅灰色 */
  --white-color: #ffffff; /* 白色 */
  --text-color: #212121; /* 文本颜色 */
  --transition: all 0.3s ease;
  --border-radius: 20px; /* 默认圆角大小 */
  --btn-radius: 30px; /* 按钮圆角 */
  --card-radius: 16px; /* 卡片圆角 */
  --glass-bg: rgba(33, 33, 33, 0.25); /* 磨砂玻璃背景-深灰色 */
  --glass-bg-light: rgba(255, 255, 255, 0.15); /* 磨砂玻璃背景-浅色 */
  --glass-border: rgba(255, 255, 255, 0.1); /* 磨砂玻璃边框 */
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.15); /* 磨砂玻璃阴影 */
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "Montserrat", "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: linear-gradient(135deg, #333333 0%, #212121 100%);
  background-attachment: fixed;
  font-weight: 300;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("https://source.unsplash.com/random/1920x1080/?minimal,pattern")
    no-repeat center center/cover;
  opacity: 0.05;
  z-index: -1;
}

/* 磨砂玻璃效果通用类 */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-light {
  background: var(--glass-bg-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

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

.section-title {
  text-align: center;
  margin-bottom: 4rem;
  font-size: 2.5rem;
  position: relative;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--white-color);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 4px;
  background: var(--accent-color);
  border-radius: 10px;
}

section {
  padding: 7rem 0;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: var(--glass-bg);
  color: var(--white-color);
  border-radius: var(--btn-radius);
  font-weight: 500;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.069);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 1px solid var(--glass-border);
}

.btn::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background: var(--accent-color);
  transition: var(--transition);
  z-index: -1;
  border-radius: var(--btn-radius);
}

.btn:hover {
  color: var(--white-color);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.btn:hover::after {
  height: 100%;
}

/* 头部导航 */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: transparent;
  z-index: 1000;
  padding: 1.2rem 0;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 1rem 2rem;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
}

.logo {
  font-size: 1.8rem;
  color: var(--white-color);
  font-weight: 700;
  letter-spacing: 1px;
}

.logo-en {
  font-size: 1.2rem;
  color: var(--accent-color);
  font-weight: 400;
  opacity: 0.8;
  margin-left: 5px;
}

nav ul {
  display: flex;
}

nav ul li {
  margin-left: 2rem;
}

nav ul li a {
  color: var(--white-color);
  font-weight: 500;
  position: relative;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

nav ul li a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--accent-color);
  transition: var(--transition);
  border-radius: 20px;
}

nav ul li a:hover {
  color: var(--accent-color);
}

nav ul li a:hover::after {
  width: 100%;
}

/* 首页/英雄区域 */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    rgba(33, 33, 33, 0.9) 0%,
    rgba(33, 33, 33, 0.8) 100%
  );
  background-size: cover;
  background-position: center;
  color: var(--white-color);
  text-align: left;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("https://source.unsplash.com/random/1920x1080/?minimal,architecture")
    no-repeat center center/cover;
  opacity: 0.1;
  z-index: -1;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
}

.hero-content h1 {
  font-size: 4.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -1px;
}

.subtitle {
  font-size: 2.5rem;
  color: var(--accent-color);
  font-weight: 400;
  opacity: 0.8;
  margin-left: 10px;
}

.hero-content p:first-of-type {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.hero-content p:last-of-type {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 300;
}

.highlight {
  color: var(--accent-color);
}

/* 关于我部分 - 简化版 */
.about {
  background-color: transparent;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
  color: var(--white-color);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: stretch;
  position: relative;
  z-index: 1;
}

.about-img-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  height: 100%;
}

.about-img {
  position: relative;
  width: 100%;
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  overflow: hidden;
}

.about-img img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: none;
  border: none;
  transition: transform 0.4s ease;
  object-fit: cover;
}

.about-img img:hover {
  transform: translateY(-10px);
  box-shadow: none;
}

.about-img::before {
  content: none;
}

.about-info {
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  height: 100%;
}

.about-header {
  margin-bottom: 2rem;
}

.education {
  display: block;
  background: rgba(255, 64, 129, 0.1);
  padding: 12px 20px;
  border-radius: 30px;
  transition: transform 0.3s ease;
  text-align: center;
  margin-top: auto;
}

.education:hover {
  transform: translateY(-5px);
}

.school {
  display: flex;
  align-items: center;
  font-size: 1.1rem;
  color: var(--accent-color);
}

.school i {
  margin-right: 10px;
}

.about-summary {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2rem;
}

.personality-traits {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.personality-traits li {
  display: flex;
  align-items: center;
  padding: 12px 0;
  margin-bottom: 0.8rem;
  transition: transform 0.3s ease;
  position: relative;
  opacity: 0.9;
}

.personality-traits li:hover {
  transform: translateX(10px);
  opacity: 1;
}

.personality-traits li i {
  width: 40px;
  height: 40px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
  color: var(--white-color);
  box-shadow: 0 5px 15px rgba(255, 64, 129, 0.3);
  transition: transform 0.3s ease;
}

.personality-traits li:hover i {
  transform: rotate(360deg);
}

.personality-traits li strong {
  color: var(--accent-color);
  margin-right: 8px;
  font-weight: 600;
}

/* 技能部分 */
.skills {
  background-color: transparent;
  border-radius: 50px 50px 0 0;
}

.skills-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.skill-card {
  background: var(--glass-bg-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 2.5rem 1.5rem;
  border-radius: var(--card-radius);
  box-shadow: var(--glass-shadow);
  text-align: center;
  transition: var(--transition);
  position: relative;
  border: 1px solid var(--glass-border);
  color: var(--white-color);
}

.skill-card:hover {
  transform: translateY(-10px);
  border-bottom: 4px solid var(--accent-color);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.skill-card i {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: 1.2rem;
  background: rgba(255, 64, 129, 0.1);
  height: 80px;
  width: 80px;
  line-height: 80px;
  border-radius: 50%;
}

.skill-card h3 {
  margin-bottom: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  font-size: 1.1rem;
}

.skill-card p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

/* 项目部分 */
.projects {
  background-color: transparent;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
}

.project-card {
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  position: relative;
  background: var(--glass-bg-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.project-card .img {
  height: 250px;
  width: 100%;
  object-fit: cover;
  position: relative;
  border-top-left-radius: var(--card-radius);
  border-top-right-radius: var(--card-radius);
}

.project-icon {
  height: 200px;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  border-top-left-radius: var(--card-radius);
  border-top-right-radius: var(--card-radius);
  background: radial-gradient(
    circle,
    var(--primary-color) 0%,
    var(--secondary-color) 100%
  );
  overflow: hidden;
}

.project-icon::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent-color);
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-icon::after {
  opacity: 0.1;
}

.project-icon i {
  font-size: 5rem;
  color: var(--white-color);
  opacity: 0.8;
  transition: var(--transition);
  z-index: 2;
}

.project-card:hover .project-icon i {
  transform: scale(1.1);
  color: var(--accent-color);
  opacity: 1;
}

.project-card:nth-child(1) .project-icon {
  background: radial-gradient(
    circle,
    var(--primary-color) 0%,
    var(--secondary-color) 100%
  );
}

.project-card:nth-child(2) .project-icon {
  background: radial-gradient(
    circle,
    var(--secondary-color) 0%,
    var(--primary-color) 100%
  );
}

.project-card:nth-child(3) .project-icon {
  background: radial-gradient(circle, var(--primary-color) 0%, #424242 100%);
}

.project-info {
  padding: 2rem;
  color: var(--white-color);
}

.project-info h3 {
  margin-bottom: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.project-info p {
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.7);
}

.project-links {
  display: flex;
  justify-content: center;
}

.project-links .btn {
  padding: 0.5rem 1.2rem;
  font-size: 0.8rem;
  width: 80%;
}

/* 联系我部分 */
.contact {
  background-color: transparent;
  border-radius: 0 0 50px 50px;
}

.contact-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
  background: var(--glass-bg-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 1rem;
  border-radius: 50px;
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  color: var(--white-color);
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-right: 1.5rem;
  background: rgba(255, 64, 129, 0.1);
  height: 50px;
  width: 50px;
  line-height: 50px;
  border-radius: 50%;
  text-align: center;
}

.contact-item p {
  color: var(--white-color);
  font-size: 1.1rem;
}

.social-links {
  display: flex;
  margin-top: 2rem;
}

.social-links a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 45px;
  height: 45px;
  background: var(--glass-bg);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  color: var(--white-color);
  border-radius: 50%;
  margin-right: 1rem;
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
}

.social-links a:hover {
  background: var(--accent-color);
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.contact-form .form-group {
  margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  font-family: inherit;
  background: var(--glass-bg-light);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  color: var(--white-color);
  transition: var(--transition);
}

.contact-form textarea {
  resize: none;
  border-radius: 20px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 10px rgba(255, 64, 129, 0.2);
}

.contact-form .btn {
  width: 100%;
  cursor: pointer;
  border: none;
}

/* 页脚 */
footer {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--white-color);
  text-align: center;
  padding: 2rem 0;
  border-radius: 50px 50px 0 0;
  border-top: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-img {
    width: 60%;
    max-width: 250px;
  }

  .personality-traits {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-img {
    width: 80%;
    max-width: 200px;
  }

  .hero-content h1 {
    font-size: 2.8rem;
  }

  .hero-content p {
    font-size: 1.2rem;
  }

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

  header {
    padding: 0.8rem 0;
  }

  header .container {
    width: 100%;
    max-width: 90%;
    margin: 0 auto;
    position: relative;
  }

  header.mobile-menu-open .container {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  nav ul {
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 80px 2rem 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 100;
  }

  nav ul.show {
    transform: translateX(0);
  }

  nav ul li {
    margin: 1.5rem 0;
    text-align: center;
  }

  /* 当导航栏隐藏时，汉堡菜单仍然可见 */
  header.scroll-down .hamburger {
    position: fixed;
    top: 1rem;
    right: 1.5rem;
    background-color: var(--accent-color);
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(0);
    transition: all 0.3s ease;
    z-index: 1001;
  }

  /* 汉堡菜单动画效果 */
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hamburger {
    display: block; /* 在移动端始终显示汉堡菜单 */
  }
}

/* 添加动画效果 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 装饰元素 */
.dot-decoration {
  position: absolute;
  width: 170px;
  height: 170px;
  z-index: -1;
  opacity: 0.7;
}

.dot-top-left {
  top: -40px;
  left: -40px;
  background-image: radial-gradient(
    circle,
    rgba(255, 64, 129, 0.15) 1px,
    transparent 2px
  );
  background-size: 15px 15px;
}

.dot-bottom-right {
  bottom: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  background-image: radial-gradient(
    circle,
    rgba(33, 33, 33, 0.1) 1px,
    transparent 2px
  );
  background-size: 10px 10px;
}

.img-frame {
  display: none;
}

.circle-decoration {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(255, 64, 129, 0.05) 0%,
    rgba(255, 64, 129, 0.02) 100%
  );
  right: -70px;
  bottom: -70px;
  z-index: -1;
}

.traits-container {
  position: relative;
}

.dot-decoration.dot-top-left {
  top: -20px;
  left: 0;
  width: 100px;
  height: 100px;
  background-image: radial-gradient(
    circle,
    rgba(255, 64, 129, 0.2) 1px,
    transparent 2px
  );
  background-size: 12px 12px;
}

/* 添加一些现代的装饰元素 */
.about-img::after {
  content: none;
}

/* 汉堡菜单样式 */
.hamburger {
  display: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.bar {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--white-color);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 3px;
}

/* 导航栏显示控制 */
header.scroll-down {
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

header.scroll-up {
  transform: translateY(0);
  transition: transform 0.3s ease;
}

header.fixed-nav {
  background: transparent;
  box-shadow: none;
}

header.mobile-menu-open {
  transform: translateY(0);
}

/* 桌面端侧边导航 */
header.desktop-side-nav {
  position: fixed;
  top: 0;
  right: -300px; /* 初始位置在屏幕右侧外 */
  width: 300px;
  height: 100vh;
  transform: none;
  transition: right 0.3s ease;
  background: transparent;
  z-index: 1010;
}

header.desktop-side-nav.show {
  right: 0;
}

header.desktop-side-nav .container {
  height: 100%;
  flex-direction: column;
  justify-content: flex-start;
  border-radius: 0;
  border-top-left-radius: var(--border-radius);
  border-bottom-left-radius: var(--border-radius);
}

header.desktop-side-nav .logo {
  margin-bottom: 2rem;
  align-self: flex-start;
}

header.desktop-side-nav nav {
  width: 100%;
}

header.desktop-side-nav nav ul {
  flex-direction: column;
  width: 100%;
}

header.desktop-side-nav nav ul li {
  margin: 0.8rem 0;
  width: 100%;
}

header.desktop-side-nav nav ul li a {
  display: block;
  padding: 0.5rem 0;
  width: 100%;
}

/* 移动端侧边导航 */
@media (max-width: 768px) {
  header.mobile-side-nav {
    position: fixed;
    top: 0;
    left: -90%;
    width: 90%;
    height: 100vh;
    transform: none;
    transition: left 0.3s ease;
    background: transparent;
    z-index: 1010;
  }

  header.mobile-side-nav.show {
    left: 0;
  }

  header.mobile-side-nav .container {
    height: 100%;
    flex-direction: column;
    justify-content: flex-start;
    border-radius: 0;
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    width: 100%;
    max-width: 100%;
  }

  header.mobile-side-nav .logo {
    margin-bottom: 2rem;
    align-self: flex-start;
  }

  header.mobile-side-nav nav {
    width: 100%;
  }

  header.mobile-side-nav nav ul {
    flex-direction: column;
    position: static;
    width: 100%;
    max-height: none;
    padding: 1rem 0;
    overflow: visible;
    box-shadow: none;
    border: none;
    background: transparent;
  }

  header.mobile-side-nav nav ul li {
    margin: 0.8rem 0;
  }

  header.mobile-side-nav nav ul li a {
    display: block;
    padding: 0.5rem 0;
  }

  header.mobile-side-nav .hamburger {
    display: none;
  }
}

/* 圆形导航按钮 */
.nav-circle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3.5rem;
  height: 3.5rem;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transform: scale(0);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-circle.show {
  transform: scale(1);
}

.nav-circle i {
  color: var(--white-color);
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.nav-circle.active i {
  transform: rotate(180deg);
}

/* 滑动提示遮罩 */
.swipe-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1005;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

.swipe-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* 滑动提示动画 */
.swipe-hint {
  position: fixed;
  top: 50%;
  width: 60px;
  height: 60px;
  background: var(--accent-color);
  border-radius: 50%;
  z-index: 1005;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(-50%) scale(0);
  opacity: 0;
  transition: all 0.3s ease;
}

.swipe-hint.show {
  transform: translateY(-50%) scale(1);
  opacity: 0.8;
  animation: pulse 1.5s infinite;
}

.swipe-hint.right {
  right: 20px;
}

.swipe-hint.left {
  left: 20px;
}

.swipe-hint i {
  color: var(--white-color);
  font-size: 1.5rem;
}

@keyframes pulse {
  0% {
    transform: translateY(-50%) scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 64, 129, 0.7);
  }

  70% {
    transform: translateY(-50%) scale(1);
    box-shadow: 0 0 0 10px rgba(255, 64, 129, 0);
  }

  100% {
    transform: translateY(-50%) scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 64, 129, 0);
  }
}