/* =========================================
   基础全局样式 (Base Global Styles)
   ========================================= */
:root {
    --primary-color: #c9a063; /* 对应原网的金色调 */
    --text-color: #333;
    --bg-light: #f9f9f9;
    --border-color: #eee;
    --white: #ffffff;
}

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

body {
    font-family: "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   Banner 区域 (Banner Section)
   ========================================= */
.banner {
    height: 60vh;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.unsplash.com/photo-1511379938547-c1f69419868d?auto=format&fit=crop&q=80&w=2000') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-align: center;
}

.banner h1 {
    font-size: 3.5rem;
    letter-spacing: 0.5rem;
    font-weight: 300;
    margin-bottom: 20px;
}

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

/* =========================================
   委员会介绍 (Introduction Section)
   ========================================= */
.section-intro {
    padding: 80px 0;
    background-color: var(--white);
    text-align: center;
}

.section-title {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--primary-color);
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

.btn-join {
    display: inline-block;
    margin-top: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 40px;
    border-radius: 4px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-join:hover {
    background-color: #b38b4d;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* =========================================
   委员会成员 (Members Section)
   ========================================= */
.section-members {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.member-card {
    background: var(--white);
    padding: 30px;
    text-align: center;
    border-radius: 8px;
    transition: 0.3s;
}

.member-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.member-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: var(--border-color);
    margin: 0 auto 20px;
    overflow: hidden;
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-name {
    font-size: 1.25rem;
    margin-bottom: 5px;
    color: #333;
}

.member-role {
    font-size: 0.9rem;
    color: var(--primary-color);
}

/* =========================================
   主要活动和公告 (Activities Section)
   ========================================= */
.section-activities {
    padding: 80px 0;
}

.activities-list {
    margin-top: 40px;
}

.activity-item {
    display: flex;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    transition: 0.3s;
}

.activity-item:hover {
    padding-left: 10px;
    color: var(--primary-color);
}

.activity-date {
    width: 120px;
    font-size: 0.9rem;
    color: #999;
}

.activity-title {
    flex: 1;
    font-size: 1.1rem;
}

/* =========================================
   填写信息页面 (Join Form Page)
   ========================================= */
.form-container {
    max-width: 600px;
    margin: 100px auto;
    padding: 40px;
    background: var(--white);
    box-shadow: 0 15px 50px rgba(0,0,0,0.1);
    border-radius: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary-color);
}

.btn-back {
    margin-bottom: 20px;
    cursor: pointer;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
}

/* =========================================
   响应式适配 (Responsive Design)
   ========================================= */
@media (max-width: 768px) {
    .banner h1 {
        font-size: 2rem;
    }
    .members-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
    .activity-date {
        width: 80px;
    }
}

/* =========================================
   申请页面样式 (Apply Page Additional Styles)
   所属页面: apply.html
   ========================================= */
.apply-page {
    background-color: var(--bg-light);
    min-height: 100vh;
    padding: 50px 0;
}

.form-card {
    background: var(--white);
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.form-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 5px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-item input {
    width: auto !important;
}

.other-input {
    margin-top: 10px;
    border-bottom: 1px solid var(--primary-color) !important;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
    border-radius: 0 !important;
}

.region-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.region-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--white);
}

.form-hint {
    font-size: 0.85rem;
    color: #999;
    margin-top: 5px;
}