/* 【1】基础初始化 (Reset & Base) */
* { 
    box-sizing: border-box; 
}

body { 
    margin: 0; 
    padding: 0; 
    background: #000; 
    color: #fff; 
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif; 
    -webkit-font-smoothing: antialiased; 
}

/* 【2】导航栏 (Header Navigation)*/
.daohang-lan {
    position: sticky; 
    top: 0; 
    width: 100%; 
    height: 70px;
    padding: 0 5%; 
    z-index: 1000;
    background: rgba(0, 0, 0, 0.85); 
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0; 
    white-space: nowrap;
}

.nav-left, 
.nav-center, 
.nav-right { 
    display: inline-block; 
    vertical-align: middle; 
    height: 70px; 
    line-height: 70px; 
    font-size: 14px; 
}

/* 导航分区比例 */
.nav-left   { width: 35%; text-align: left; }
.nav-center { width: 30%; text-align: center; text-decoration: none; }
.nav-right  { width: 35%; text-align: right; }

/* 导航链接 */
.nav-left a { 
    color: #ccc; 
    text-decoration: none; 
    font-size: 11px; 
    letter-spacing: 2px; 
    text-transform: uppercase; 
    margin-right: 25px; 
    transition: 0.3s; 
}
.nav-left a:hover { color: #ff4500; }

/* Logo 样式 */
.biaozhi { 
    height: 22px; 
    filter: brightness(1.2); 
    vertical-align: middle; 
    margin-right: 12px; 
}

.mingzi { 
    display: inline-block; 
    vertical-align: middle; 
    letter-spacing: 5px; 
    font-weight: 300; 
    font-size: 14px; 
    text-transform: uppercase; 
    color: #fff; 
    margin: 0; 
}

/* 搜索与购物车 */
.search-bar { 
    display: inline-block; 
    vertical-align: middle; 
    border-bottom: 1px solid #333; 
    padding: 2px 5px; 
    margin-right: 20px; 
    line-height: normal; 
}

.search-bar input { 
    background: transparent; 
    border: none; 
    color: #fff; 
    font-size: 10px; 
    width: 70px; 
    outline: none; 
}

.Shopping { 
    text-decoration: none; 
    font-size: 18px; 
    position: relative; 
    color: #fff; 
    display: inline-block; 
    vertical-align: middle; 
    line-height: normal; 
    margin-right: 20px; 
}

.Shopping-number { 
    position: absolute; 
    top: -8px; 
    right: -10px; 
    background: #ff4500; 
    font-size: 9px; 
    padding: 1px 4px; 
    border-radius: 10px; 
    line-height: 1; 
}

.login-link { 
    display: inline-block; 
    vertical-align: middle; 
    color: #ff4500; 
    text-decoration: none; 
    font-size: 11px; 
    border: 1px solid #ff4500; 
    padding: 4px 12px; 
    line-height: normal; 
    transition: 0.3s;
}
.login-link:hover { background: #ff4500; color: #fff; }

/* 【3】主体内容  */
.main { 
    max-width: 1200px; 
    margin: 60px auto; 
    padding: 0 5%; 
}

/* 清除浮动 */
.main::after { 
    content: ""; 
    display: table; 
    clear: both; 
}

.left { 
    float: left; 
    width: 50%; 
    padding-right: 40px; 
}

.right { 
    float: right; 
    width: 50%; 
    padding-left: 40px; 
}

/* 唱片展示容器 */
.tu-pian-he { 
    position: relative; 
    background: #080808; 
    border: 1px solid #151515; 
    padding: 50px; 
    border-radius: 4px; 
    text-align: center; 
    cursor: pointer; 
}

.chang-pian-pan { 
    width: 100%; 
    max-width: 350px; 
    border-radius: 50%; 
    display: inline-block; 
    box-shadow: 0 10px 40px rgba(0,0,0,0.8); 
    transition: 0.5s; 
    animation: record-rotate 10s linear infinite;
    animation-play-state: paused;
}

/* 播放状态控制 */
.playing .chang-pian-pan {
    animation-play-state: running !important;
}

@keyframes record-rotate { 
    from { transform: rotate(0deg); } 
    to { transform: rotate(360deg); } 
}

.bo-fang-ti-shi { 
    margin-top: 20px; 
    font-size: 10px; 
    color: #444; 
    letter-spacing: 2px; 
    text-transform: uppercase;
}

/* 文本详情 */
.biao-ti { 
    font-size: 32px; 
    letter-spacing: 3px; 
    margin-bottom: 10px; 
    font-weight: 300; 
}

.yi-shu-jia { 
    color: #ff4500; 
    font-size: 14px; 
    margin-bottom: 35px; 
    letter-spacing: 2px; 
}

.price { 
    border-top: 1px solid #111; 
    border-bottom: 1px solid #111; 
    padding: 25px 0; 
    margin-bottom: 35px; 
}

.qian { 
    font-size: 24px; 
    font-weight: 600; 
}

/* 交互按钮 */
.an-niu { 
    display: block; 
    width: 100%; 
    padding: 18px; 
    border: none; 
    cursor: pointer; 
    font-size: 11px; 
    letter-spacing: 3px; 
    font-weight: bold; 
    margin-bottom: 15px; 
    text-transform: uppercase; 
    transition: 0.3s;
}

.zhu-an-niu { background: #ff4500; color: #fff; }
.zhu-an-niu:hover { background: #e03d00; }

.ci-an-niu { background: transparent; border: 1px solid #333; color: #fff; }
.ci-an-niu:hover { border-color: #666; background: rgba(255,255,255,0.05); }

/* 曲目列表 */
.qu-mu-dan { 
    margin-top: 40px; 
}

.qu-mu-dan h4 { 
    font-size: 10px; 
    color: #333; 
    letter-spacing: 4px; 
    margin-bottom: 20px; 
    text-transform: uppercase;
}

.hang { 
    padding: 15px 0; 
    border-bottom: 1px solid #0a0a0a; 
    font-size: 13px; 
    color: #999; 
    cursor: pointer; 
    transition: 0.2s;
}

.hang span { 
    color: #333; 
    margin-right: 20px; 
    font-family: monospace; 
}

.hang:hover { color: #fff; }
.hang.active { color: #ff4500; }

/* 【4】页脚 (Footer) */
.big-ft {
    background: #000; 
    padding: 100px 6% 40px;
    border-top: 1px solid #111; 
    margin-top: 100px;
}

.ft-container::after { 
    content: ""; 
    display: table; 
    clear: both; 
}

.ft-text { 
    float: left; 
    width: 25%; 
}

.ft-text h4 { 
    font-size: 11px; 
    color: #ff4500; 
    letter-spacing: 4px; 
    margin-bottom: 30px; 
    text-transform: uppercase; 
}

.ft-text a { 
    display: block; 
    color: #555; 
    text-decoration: none; 
    font-size: 12px; 
    margin-bottom: 15px; 
    transition: 0.3s; 
}
.ft-text a:hover { color: #fff; }

.ft-center { 
    float: left; 
    width: 50%; 
    text-align: center; 
}

.big-logo { 
    font-size: 32px; 
    letter-spacing: 15px; 
    font-weight: 200; 
    margin-bottom: 25px; 
    display: block; 
    color: #fff; 
    text-decoration: none; 
}

.ft-center p { 
    color: #444; 
    font-size: 12px; 
    line-height: 2; 
    margin: 0; 
}

.ft-text.right { 
    float: right; 
    text-align: right; 
}

/* 底部版权条 */
.ft-bottom-line { 
    margin-top: 100px; 
    padding-top: 35px; 
    border-top: 1px solid #080808; 
    font-size: 9px; 
    color: #222; 
    letter-spacing: 3px; 
}

.ft-bottom-line::after { 
    content: ""; 
    display: table; 
    clear: both; 
}

.ft-bottom-line div:first-child { float: left; }
.ft-bottom-line div:last-child { float: right; }