* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    background: linear-gradient(135deg, #e0f7fa, #f5f7fa);
    color: #333;
    line-height: 1.7;
    min-height: 100vh;
}

.page {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin: 40px 0;
}

.header h1 {
    font-size: 34px;
    color: #0d47a1;
    margin-bottom: 6px;
}

.subtitle {
    font-size: 16px;
    color: #555;
    margin-bottom: 10px;
}

.time {
    font-size: 14px;
    color: #666;
}

.card {
    background: #fff;
    border-radius: 18px;
    padding: 40px 30px;
    box-shadow: 0 6px 25px rgba(0,0,0,0.08);
    text-align: center;
    margin-bottom: 30px;
}

.avatar {
    margin-bottom: 25px;
}

.avatar-placeholder {
    width: 125px;
    height: 125px;
    background: #bbdefb;
    border-radius: 50%;
    margin: 0 auto;
    border: 5px solid white;
    box-shadow: 0 0 12px rgba(0,0,0,0.1);
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 17px;
}

.info-item:last-child { border: none; }
.info-item span:first-child { color: #0d47a1; font-weight: bold; }

.stats {
    background: #e3f2fd;
    text-align: center;
    padding: 12px;
    border-radius: 12px;
    font-size: 15px;
    margin-bottom: 25px;
    color: #0d47a1;
}

.message-board {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    margin-bottom: 40px;
}

.message-board h3 {
    color: #0d47a1;
    margin-bottom: 15px;
    font-size: 19px;
}

#msgInput {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 15px;
    margin-bottom: 10px;
    outline: none;
}

button {
    background: #1976d2;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 15px;
}

button:hover { background: #0d47a1; }

#msgList {
    margin-top: 20px;
    max-height: 220px;
    overflow-y: auto;
}

.msg-item {
    background: #f5f9ff;
    padding: 10px 14px;
    border-radius: 10px;
    margin-bottom: 8px;
    font-size: 15px;
}

.footer {
    text-align: center;
    font-size: 14px;
    color: #888;
    padding-bottom: 30px;
}