/* —— 基础 —— */
body {
  margin: 10px;
  font-family: "Inter", Arial, sans-serif;
  background: #ffffff;
  color: #1a1a1a;
  line-height: 1.7;
}

h1, h2, h3 {
  font-family: "Georgia", "Times New Roman", serif;
  transform: scaleX(0.9);
  transform-origin: left center;
  font-weight: 600;
  margin-bottom: 10px;
  color: #0d0d0d;
}

h3 {
  font-family: "Times New Roman", serif;
    transform: scaleX(1.0);
  transform-origin: left center;
  font-weight: 600;
  margin-bottom: 10px;
  color: #0d0d0d;
}

h1 {
  font-size: 2.6rem;
  margin-top: 0;
}

h2 {
  font-size: 1.8rem;
  /* border-left: 4px solid #2b59c3;   科研感的蓝色 */
  padding-left: 0px;
  margin-top: 40px;
}

h3 {
  font-size: 1.5rem;
  margin-top: 30px;
}

li {
  font-size: 1.3rem;
  color: #333;
}

p {
  font-size: 1.3rem;
  color: #333;
}

/* —— 顶部导航 —— */
header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

nav {
  max-width: 1050px;
  margin: auto;
  display: flex;
  gap: 5px;
  font-size: 1.5rem;
}

.nav-logo {
  min-width: 3%;
  width: 35px;
  height: auto;
}


nav a {
  text-decoration: none;
  color: #1a1a1a;
  font-weight: 500;
}

nav a:hover {
  color: #2b59c3;
}

/* —— 版心 —— */
.container {
  position: relative;
  max-width: 1050px;
  margin: auto;
  padding: 5px 0px;
}

/* —— 首页hero —— */
.hero {
  margin-top: 15px;
  padding: 5px 0;
}

.hero h1 {
  font-size-adjust: 3rem ;
  line-height: 1.2;
}

.hero p {
  font-size: 1.4rem;
  max-width: 100%;
}


/* —— 卡片式项目 —— */
.project-card {
  background: #f8f9fb;
  border-radius: 0px;
  padding: 0px;
  margin: 0px 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.project-card img {
  width: 100%;
  border-radius: 6px;
  margin-bottom: 10px;
}

.project-card h3 {
  margin-top: 0;
}


/* —— Carousel —— */
.carousel {
  position: absolute;
  max-width: 38%;
  margin-top: 5.5%;
  margin-left: 35.5%;
  overflow: hidden;
  border-radius: 8px;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel-track img {
  width: 100%;
  flex-shrink: 0;
  border-radius: 8px;
}


.overlay-image {
  position: absolute;
  z-index: 2;
  display: block;
  max-width: 80%;
  height: auto;

  /* Allows carousel buttons beneath it to remain clickable */
  pointer-events: none;
}


footer {
  position: relative;
  margin-top: 100px;
  padding: 25px;
  text-align: center;
  background: #f3f4f6;
  color: #666;
  font-size: 0.9rem;
}