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

body {
    font-family: 'Inter', sans-serif;
    background-color: #0d1117; /* 深蓝灰色背景，更现代 */
    color: #ffffff;
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 背景图与遮罩 */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 保持原图链接 */
    background: url('https://images.unsplash.com/photo-1581092160562-40aa08e78837?auto=format&fit=crop&q=80&w=1920') no-repeat center center/cover;
    z-index: -2;
    filter: brightness(0.25) contrast(1.1); /* 加深亮度，让内容更突出 */
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 增加一个更通透的渐变遮罩 */
    background: linear-gradient(180deg, rgba(13, 17, 23, 0.4) 0%, rgba(13, 17, 23, 0.9) 100%);
    z-index: -1;
}

/* 内容布局 */
.content {
    text-align: center;
    max-width: 850px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 10;
}

/* Logo 优化区域 - 这是你的重点 */
header {
    margin-bottom: 60px; /* 增加与标题的间距 */
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 15px; /* Logo 和文字的紧凑间距 */
}

/* 使用 CSS 绘制红色 Logo 块 */
.logo-box {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%); /* 渐变红，增加质感 */
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
    font-family: 'Barlow Condensed', sans-serif;
    position: relative;
    overflow: hidden;
}

.logo-box::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
}

.logo-box span {
    color: white;
    font-weight: 700;
}

.logo-h { font-size: 1.8rem; margin-right: -2px;}
.logo-d { font-size: 1.8rem; }

/* 优化后的品牌名称文字 */
.brand-name {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
    text-transform: uppercase;
}

.brand-name span {
    font-weight: 300;
    color: #aaa; /* GROUP 部分变淡，突出 HWAMDA */
    letter-spacing: 1px;
}

/* 主标题 */
.main-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 4.2rem; /* 增大标题 */
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    line-height: 1;
    background: linear-gradient(180deg, #FFFFFF 0%, #D8D8D8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.05rem;
    color: #b0b0b0;
    line-height: 1.7;
    margin-bottom: 60px;
    font-weight: 300;
}

/* 倒计时样式 - 更精致 */
.countdown {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 70px;
}

.time-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100px;
}

.time-box span {
    font-size: 3.5rem; /* 增大数字 */
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.time-box label {
    font-size: 0.8rem;
    color: #007bff; /* 保持原有的蓝色强调色 */
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 5px;
}

/* 订阅表单 - 增加现代感 */
.inquiry-box form {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.input-wrapper {
    position: relative;
}

.inquiry-box input {
    padding: 18px 30px;
    width: 350px;
    border: none;
    border-radius: 40px;
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    font-size: 1rem;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: 0.3s;
}

.inquiry-box input:focus {
    outline: none;
    border-color: rgba(0, 123, 255, 0.5);
    background: rgba(255, 255, 255, 0.1);
}

.inquiry-box button {
    padding: 18px 45px;
    border: none;
    border-radius: 40px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.inquiry-box button:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.5);
    transform: translateY(-2px);
}

/* 底部信息 */
footer {
    margin-top: 80px;
    width: 100%;
}

.contact-info {
    margin-bottom: 12px;
    color: #aaa;
    font-size: 0.95rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.contact-info .sep {
    color: #555;
    font-weight: 300;
}

.copyright {
    font-size: 0.85rem;
    color: #666;
    font-weight: 300;
}

/* 手机端适配 */
@media (max-width: 768px) {
    .content { padding: 20px; }
    .brand-group { gap: 10px; }
    .logo-box { width: 40px; height: 40px; }
    .logo-h, .logo-d { font-size: 1.4rem; }
    .brand-name { font-size: 1.3rem; }
    
    .main-title { font-size: 2.8rem; }
    .subtitle { font-size: 0.95rem; margin-bottom: 40px;}
    
    .countdown { gap: 20px; margin-bottom: 50px; }
    .time-box { width: 70px; }
    .time-box span { font-size: 2.5rem; }
    
    .inquiry-box form { flex-direction: column; align-items: center; gap: 15px; }
    .inquiry-box input { width: 100%; }
    
    .contact-info { flex-direction: column; gap: 5px; }
    .contact-info .sep { display: none; }
}