/* ===== 英雄/Hero 区域 ===== */
.hero {
    margin-top: 0;
    padding: 8rem 0 4rem 0;
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.6) 100%);
    z-index: 0; pointer-events: none;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    flex: 1;
    padding: 2rem;
    position: relative;
    z-index: 2;
    background: transparent;
    border-radius: 10px;
    margin: 0 2rem;
    max-width: 800px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.hero h2 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 1rem;
    font-weight: 400;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}

.hero p {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
}

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

/* ===== 首页"关于"区 ===== */
.about {
    padding: 6rem 0 4rem 0;
    background: #f8f9fa;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

/* ===== 关于页面 ===== */
.about-page {
    padding-top: 80px;
}

.about-hero {
    height: 60vh;
    background: linear-gradient(135deg, #4f8ac9 0%, #3b6cb4 100%);
}

.about-content {
    padding: 4rem 0;
}

.about-intro, .about-mission, .about-history, .about-stats {
    margin-bottom: 4rem;
}

.about-intro h2, .about-mission h2, .about-history h2, .about-stats h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    text-align: center;
}

.about-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* ===== 关于网格（首页用） ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
    justify-items: center;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #555;
}

/* ===== 学术研究区 ===== */
.academics {
    padding: 4rem 0;
    background: #f8f9fa;
}

.academics h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.colleges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* ===== 招生信息区 ===== */
.admissions {
    padding: 4rem 0;
    background: white;
}

.admissions h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.admissions-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

/* ===== 校园生活区 ===== */
.campus {
    padding: 4rem 0;
    background: #f8f9fa;
}

.campus h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.campus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

/* ===== 联系我们页面 ===== */
.contact-page {
    padding-top: 80px;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.contact-content {
    padding: 6rem 0;
}

.contact-content h1 {
    text-align: center;
    font-size: 3.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.contact-intro {
    text-align: center;
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.contact-grid {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
}

.contact-info {
    max-width: 600px;
    width: 100%;
}

.contact-info h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.contact-info h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #4f8ac9 0%, #3b6cb4 100%);
    border-radius: 2px;
}

/* ===== 申请页面 ===== */
.apply-page {
    padding-top: 80px;
}

.apply-header {
    background: linear-gradient(135deg, #4f8ac9 0%, #3b6cb4 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.apply-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.apply-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.apply-form-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.apply-form-container {
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.apply-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}

/* ===== 学院/学生列表页面 ===== */
.colleges-section {
    margin-top: 120px;
    padding: 2rem 0 4rem;
    background: white;
    min-height: 100vh;
}

.section-intro {
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
}

.section-intro h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #333;
}

.section-intro p {
    font-size: 1.2rem;
    color: #666;
}

/* ===== 常规联系方式区块 ===== */
.contact-section {
    padding: 4rem 0;
    background: white;
}

/* ===== 响应式：Hero ===== */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        min-height: 60vh;
    }

    .hero-video video {
        object-position: center;
    }

    .hero-content {
        margin: 1rem;
        padding: 1.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

/* ===== 响应式：关于 / 招生 / 联系 ===== */
@media (max-width: 768px) {
    .about-grid,
    .admissions-content {
        grid-template-columns: 1fr;
    }

    .stats {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

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

    .stats {
        flex-direction: column;
        gap: 1rem;
    }
}

/* ===== 响应式：联系我们页面 ===== */
@media (max-width: 768px) {
    .contact-content h1 {
        font-size: 2.5rem;
    }

    .contact-intro {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    .contact-info h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .contact-content {
        padding: 4rem 0;
    }

    .contact-content h1 {
        font-size: 2rem;
    }
}

/* ===== 响应式：申请页面 ===== */
@media (max-width: 768px) {
    .apply-form-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .apply-header h1 {
        font-size: 2rem;
    }
}

/* ===== 响应式：列表/学院区 ===== */
@media (max-width: 500px) {
    .colleges-section {
        margin-top: 100px;
        padding: 1rem 0 2rem;
    }
}