/* 现代渐变主页样式 - 人大红主题 */

:root {
  --ruc-red: #AE0B2A;
  --ruc-red-dark: #8A0921;
  --ruc-red-light: #C41E3A;
  --gradient-primary: linear-gradient(135deg, #AE0B2A 0%, #8A0921 50%, #C41E3A 100%);
  --gradient-secondary: linear-gradient(135deg, rgba(174, 11, 42, 0.1) 0%, rgba(174, 11, 42, 0.05) 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 100%);

  /* 艺术风格多层阴影 */
  --shadow-sm: 0 2px 8px rgba(174, 11, 42, 0.1);
  --shadow-md:
    0 2px 4px rgba(174, 11, 42, 0.08),
    0 4px 8px rgba(174, 11, 42, 0.12),
    0 8px 16px rgba(174, 11, 42, 0.16);
  --shadow-lg:
    0 4px 8px rgba(174, 11, 42, 0.1),
    0 8px 16px rgba(174, 11, 42, 0.15),
    0 16px 32px rgba(174, 11, 42, 0.2),
    0 24px 48px rgba(174, 11, 42, 0.25);
  --shadow-hover:
    0 8px 16px rgba(174, 11, 42, 0.15),
    0 16px 32px rgba(174, 11, 42, 0.2),
    0 24px 48px rgba(174, 11, 42, 0.25),
    0 32px 64px rgba(174, 11, 42, 0.3);

  --text-primary: #2c3e50;
  --text-secondary: #5a6c7d;
  --border-color: rgba(174, 11, 42, 0.2);

  /* 字体 */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-accent: 'Space Grotesk', sans-serif;
}

/* 确保Font Awesome图标样式 */
.hero-links .fas,
.hero-links .fab,
.hero-links .ai {
  margin-right: 0.5rem;
}

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

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 50%, #f8f9fa 100%);
  background-attachment: fixed;
  font-size: 15px;
  overflow-x: hidden;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--ruc-red-dark);
}

/* 全局链接手绘下划线效果 */
a {
  position: relative;
  text-decoration: none;
}

.card-content a,
.paper-content a,
.list-item-desc a {
  background-image: linear-gradient(transparent calc(100% - 2px), var(--ruc-red) 2px);
  background-size: 0% 100%;
  background-repeat: no-repeat;
  transition: background-size 0.4s ease;
}

.card-content a:hover,
.paper-content a:hover,
.list-item-desc a:hover {
  background-size: 100% 100%;
}

/* 顶部导航栏 */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--gradient-card);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo a {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-accent);
  color: var(--ruc-red);
  text-decoration: none;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all 0.3s ease;
  position: relative;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.nav-menu a:hover {
  color: var(--ruc-red);
  background: var(--gradient-secondary);
  position: relative;
  overflow: hidden;
}

/* 导航按钮波纹动画 */
.nav-ripple {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle, rgba(174, 11, 42, 0.3) 0%, transparent 70%);
  transform: scale(0);
  animation: ripple 0.6s ease-out;
  pointer-events: none;
  border-radius: 8px;
}

@keyframes ripple {
  to {
    transform: scale(2);
    opacity: 0;
  }
}

.nav-menu a::after {
  content: attr(title);
  position: absolute;
  bottom: -35px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: white;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  z-index: 1001;
}

.nav-menu a:hover::after {
  opacity: 1;
  visibility: visible;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--ruc-red);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* 主内容区 - 更紧凑 */
#main-content {
  margin-top: 60px;
  padding: 1.5rem 1rem;
}

/* Hero区域 - 更紧凑 */
.hero-section {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  padding: 3rem 2rem;
  background: var(--gradient-primary);
  border-radius: 20px;
  color: white;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: visible;
}

/* 金属质感背景装饰 */
.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    repeating-linear-gradient(45deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.03) 2px,
      rgba(255, 255, 255, 0.03) 4px),
    repeating-linear-gradient(-45deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.03) 2px,
      rgba(255, 255, 255, 0.03) 4px);
  opacity: 0.3;
  pointer-events: none;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.5;
  }

  50% {
    transform: scale(1.1) rotate(2deg);
    opacity: 0.8;
  }
}

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

.hero-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.3);
  margin: 0 auto 1.2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  object-fit: cover;
}

.hero-name {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  margin-bottom: 0.4rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-title {
  font-size: 1.15rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-style: normal;
  margin-bottom: 0.5rem;
  opacity: 0.95;
}

.hero-school {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-style: normal;
  margin: 0 auto 0.3rem;
  opacity: 0.9;
}

.hero-university {
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-style: normal;
  margin: 0 auto 1.5rem;
  opacity: 0.9;
}

.hero-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-links a {
  color: white;
  text-decoration: none;
  padding: 0.6rem 1.3rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 25px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 0.9rem;
}

.hero-links a:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.hero-links {
  position: relative;
}

.rednote-link {
  position: relative;
}

.rednote-hover-image {
  position: absolute;
  width: 180px;
  height: 180px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(174, 11, 42, 0.2);
  border: 2px solid rgba(174, 11, 42, 0.2);
  background: white;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  transform: translateX(-50%);
}

/* 卡片网格容器 - 更紧凑 */
.section {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  padding: 0 1rem;
  position: relative;
  overflow: visible;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  font-family: var(--font-heading);
  margin-bottom: 1.5rem;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  padding-bottom: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
}

.section-title i {
  font-size: 1.8rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -2px;
  width: 120px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(174, 11, 42, 0.3);
  /* 手写笔触效果 */
  filter: url('#brush-stroke');
}

.section-title::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -12px;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(174, 11, 42, 0.4), transparent);
  border-radius: 1px;
}

/* 水彩晕染背景 */
.section-title {
  background-image:
    var(--gradient-primary),
    radial-gradient(ellipse at center, rgba(174, 11, 42, 0.05) 0%, transparent 70%);
  background-size: 100%, 200% 200%;
  background-position: 0 0, center;
  animation: watercolor 6s ease-in-out infinite;
}

@keyframes watercolor {

  0%,
  100% {
    background-position: 0 0, center;
  }

  50% {
    background-position: 0 0, center 120%;
  }
}

/* 卡片网格 - 更紧凑 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  background: white;
  border-radius: 14px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: visible;
  /* 纸质纹理 */
  background-image:
    linear-gradient(white, white),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(174, 11, 42, 0.01) 2px, rgba(174, 11, 42, 0.01) 4px);
}

.card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 10%;
  width: 15%;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(174, 11, 42, 0.1), transparent);
  border-radius: 50%;
  opacity: 0.5;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  font-family: var(--font-accent);
  color: var(--ruc-red);
  margin-bottom: 0.4rem;
}

.card-content {
  color: var(--text-secondary);
  line-height: 1.7;
  font-family: var(--font-body);
}

.card-content a {
  color: var(--ruc-red);
  text-decoration: none;
  transition: color 0.3s ease;
}

.card-content a:hover {
  color: var(--ruc-red-dark);
  text-decoration: underline;
}

.card-content ul {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
}

.card-content li {
  margin-bottom: 0.4rem;
}

/* 新闻卡片 - 更紧凑 */
.news-item {
  display: flex;
  gap: 1rem;
  padding: 0.7rem;
  background: white;
  border-radius: 10px;
  margin-bottom: 0.6rem;
  border-left: 3px solid var(--ruc-red);
  transition: all 0.3s ease;
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(3px);
}

.news-date {
  color: var(--ruc-red);
  font-weight: 600;
  min-width: 110px;
  font-size: 0.85rem;
  font-family: var(--font-accent);
}

.news-content {
  flex: 1;
  color: var(--text-primary);
  font-family: var(--font-body);
  position: relative;
  padding-left: 1rem;
}

.news-content::before {
  content: '|';
  position: absolute;
  left: 0;
  color: var(--border-color);
  font-weight: 300;
}

.highlight-red {
  color: var(--ruc-red);
  font-weight: 600;
}

/* 论文卡片 - 竖式列举 */
.paper-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.paper-item {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--ruc-red);
  display: flex;
  gap: 1.5rem;
  align-items: center;
  position: relative;
  overflow: visible;
  /* 纸质层叠效果 */
  background-image:
    linear-gradient(white, white),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(174, 11, 42, 0.01) 2px, rgba(174, 11, 42, 0.01) 4px);
}

.paper-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
}

.paper-image-container {
  flex-shrink: 0;
  width: 200px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.paper-image-container img {
  width: 200px;
  height: auto;
  max-height: 120px;
  object-fit: contain;
  display: block;
  box-shadow:
    0 4px 12px rgba(174, 11, 42, 0.3),
    0 8px 24px rgba(174, 11, 42, 0.15);
  border-radius: 4px;
  transition: all 0.3s ease;
  /* 优雅的双色调滤镜 */
  filter: saturate(0.9) contrast(1.05);
}

.paper-item:hover .paper-image-container img {
  filter: saturate(1) contrast(1.1);
  box-shadow:
    0 4px 12px rgba(174, 11, 42, 0.3),
    0 8px 24px rgba(174, 11, 42, 0.15);
}

.paper-badge {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 0.4rem 0.9rem;
  border-radius: 18px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-accent);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.8rem;
}

.paper-content {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.paper-title {
  font-size: 1.05rem;
  font-weight: 600;
  font-family: var(--font-accent);
  margin-bottom: 0.6rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.paper-title a {
  color: var(--ruc-red);
  text-decoration: none;
  transition: color 0.3s ease;
}

.paper-title a:hover {
  color: var(--ruc-red-dark);
  text-decoration: underline;
}

.paper-authors {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  margin-bottom: 0.7rem;
}

.paper-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.paper-tag {
  background: white;
  color: var(--ruc-red);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-accent);
  border: 2px solid var(--ruc-red);
  position: relative;
  /* 印章效果 */
  box-shadow:
    inset 0 1px 2px rgba(174, 11, 42, 0.1),
    0 2px 4px rgba(174, 11, 42, 0.15);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  display: inline-block;
  line-height: 1.4;
}

.paper-tag:hover {
  transform: rotate(-2deg) scale(1.05);
  box-shadow:
    inset 0 1px 2px rgba(174, 11, 42, 0.2),
    0 4px 8px rgba(174, 11, 42, 0.25);
}

.paper-tag.conference {
  background: var(--gradient-primary);
  color: white;
  border: 2px solid var(--ruc-red-dark);
  /* 方形印章 - 与topic标签同高 */
  border-radius: 4px;
  min-width: 60px;
  padding: 0.3rem 0.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.75rem;
  line-height: 1.4;
  box-shadow:
    inset 0 2px 4px rgba(0, 0, 0, 0.2),
    0 4px 8px rgba(174, 11, 42, 0.3);
  position: relative;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.paper-tag.conference::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - 8px);
  height: calc(100% - 8px);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  border-radius: 2px;
}

.paper-tag.conference:hover {
  transform: rotate(2deg) scale(1.05);
}

/* 竖式列举样式 */
.list-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.list-item {
  background: white;
  border-radius: 10px;
  padding: 1.2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border-left: 4px solid var(--ruc-red);
  position: relative;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.list-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
}

.list-item-logo {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  background: linear-gradient(135deg, rgba(174, 11, 42, 0.03), rgba(174, 11, 42, 0.08));
  border: 2px solid rgba(174, 11, 42, 0.15);
  box-shadow:
    0 4px 12px rgba(174, 11, 42, 0.1),
    inset 0 2px 4px rgba(255, 255, 255, 0.8);
  position: relative;
  transition: all 0.3s ease;
}

.list-item:hover .list-item-logo {
  transform: scale(1.05);
  box-shadow:
    0 4px 12px rgba(174, 11, 42, 0.1),
    inset 0 2px 4px rgba(255, 255, 255, 0.8);
}

.list-item-logo::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  height: 90%;
  border-radius: 50%;
  border: 1px solid rgba(174, 11, 42, 0.1);
}

.list-item-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.list-item-content {
  flex: 1;
}

.list-item-date {
  color: var(--ruc-red);
  font-weight: 600;
  font-family: var(--font-accent);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.list-item-title {
  font-weight: 600;
  font-family: var(--font-accent);
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

.list-item-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  line-height: 1.6;
}

.list-item-desc a {
  color: var(--ruc-red);
  text-decoration: none;
}

.list-item-desc a:hover {
  text-decoration: underline;
}

/* 时间线样式 - 竖式 */
.timeline-item {
  display: flex;
  gap: 1.2rem;
  padding: 1.2rem;
  background: white;
  border-radius: 10px;
  margin-bottom: 0.8rem;
  border-left: 4px solid var(--ruc-red);
  transition: all 0.3s ease;
}

.timeline-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(5px);
}

.timeline-date {
  min-width: 110px;
  color: var(--ruc-red);
  font-weight: 600;
  font-family: var(--font-accent);
  font-size: 0.9rem;
}

.timeline-content {
  flex: 1;
}

.timeline-title {
  font-weight: 600;
  font-family: var(--font-accent);
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  font-size: 1rem;
}

.timeline-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  line-height: 1.6;
}

.timeline-desc a {
  color: var(--ruc-red);
  text-decoration: none;
}

.timeline-desc a:hover {
  text-decoration: underline;
}

/* 页脚 - 毛玻璃效果 */
.site-footer {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-primary);
  padding: 2.5rem 2rem;
  text-align: center;
  margin-top: 3rem;
  border-top: 1px solid rgba(174, 11, 42, 0.1);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-content p {
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    flex-direction: column;
    background: var(--gradient-card);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: left 0.3s ease;
    gap: 1rem;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-name {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 1rem;
  }

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

  .section-title {
    font-size: 1.8rem;
  }

  .nav-container {
    padding: 0.8rem 1rem;
  }

  .paper-item {
    flex-direction: column;
  }

  .paper-image-container {
    width: 100%;
    height: 180px;
  }


  .list-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .list-item-logo {
    margin-bottom: 1rem;
  }
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 锚点偏移 */
section {
  scroll-margin-top: 70px;
}

/* 页面加载动画已禁用 */

/* 呼吸动画 - 应用于重要元素 */
.hero-avatar {
  animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.03);
  }
}