/* 全局样式重置与变量声明 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0a192f;       /* 深蓝主背景 */
    --bg-light: #f4f6f9;      /* 冷灰/白色背景 */
    --text-dark: #112240;      /* 深色文字 */
    --text-light: #ffffff;     /* 白色文字 */
    --accent-blue: #00b4d8;    /* 严谨的学术蓝/点缀色 */
    --border-color: #ccd6f6;
}

html, body {
    width: 100%;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    scroll-behavior: smooth;
}

/* 顶部标题栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background-color: var(--bg-dark);
    display: flex;
    align-items: center;
    padding: 0 4%;
    z-index: 1000;
    border-bottom: 2px solid var(--accent-blue);
}

.navbar .logo {
    color: var(--text-light);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 2px;
}

/* 通用全屏 Section 布局 */
.section {
    min-height: 100vh;
    width: 100%;
    padding: 100px 10% 60px 10%; /* 留出顶部导航栏的距离 */
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 第一屏：Hero Section（深蓝背景，硬核学术风） */
.hero-section {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.profile-image-wrapper {
    display: flex;
    justify-content: center;
}

.profile-img {
    width: 100%;
    max-width: 700px;
    height: 600px;
    border: 4px solid var(--text-light);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    object-fit: cover;
}

.hero-text h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.hero-text .subtitle {
    font-size: 18px;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-text .divider {
    border: none;
    height: 2px;
    background-color: var(--accent-blue);
    width: 100px;
    margin-bottom: 25px;
}

.hero-text .intro-p {
    font-size: 16px;
    color: #a8b2d1;
    margin-bottom: 15px;
    text-align: justify;
}

/* 第二屏：获奖与采访（浅色背景） */
.award-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
}

.poster-img {
    width: 100%;
    height: auto;
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
    border-left: 5px solid var(--bg-dark);
}

.section-title {
    font-size: 32px;
    color: var(--bg-dark);
    margin-bottom: 30px;
    position: relative;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--bg-dark);
}

.interview-quote {
    margin-bottom: 25px;
    border-left: 4px solid var(--accent-blue);
    padding-left: 20px;
}

.interview-quote .question {
    font-weight: 600;
    color: var(--bg-dark);
    margin-bottom: 5px;
}

.interview-quote .answer {
    color: #555;
    font-size: 15px;
    text-align: justify;
}

/* 第三屏：个人传记 */
.biography-container {
    max-width: 800px;
    width: 100%;
}

.bio-content p {
    font-size: 17px;
    color: #333;
    margin-bottom: 20px;
    text-align: justify;
    text-indent: 2em; /* 首行缩进，符合中文传记习惯 */
}

/* --- JS滚动过渡动画效果 --- */
.scroll-reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 1s ease-out;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式适配 */
@media (max-width: 768px) {
    .hero-container, .award-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .section {
        padding: 90px 5% 40px 5%;
    }
    .hero-text h2 {
        font-size: 32px;
    }
}