:root {
    --accent: #ff4500;
}

* {
    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;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased; 
}

/* 导航系统 */
.daohang-lan {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: block;
    width: 100%;
    height: 70px;
    padding: 0 5%;
    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;
}

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

.daohang-lan .nav-left { width: 33.3%; text-align: left; }
.daohang-lan .nav-center { width: 33.4%; text-align: center; }
.daohang-lan .nav-right { width: 33.3%; text-align: right; }

.daohang-lan .nav-left a {
    display: inline-block;
    margin-right: 25px;
    color: #ccc;
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    line-height: normal;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.daohang-lan .nav-left a:hover { color: var(--accent); }

.nav-center .logo-row {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    height: 70px;
    vertical-align: middle;
}

.biaozhi { height: 22px; filter: brightness(1.2); }
.mingzi {
    margin: 0;
    color: #fff;
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 5px;
    text-transform: uppercase;
    white-space: nowrap;
}

/* 右侧工具栏 */
.search-bar {
    display: inline-flex;
    align-items: center;
    padding: 2px 5px;
    margin-right: 20px;
    border-bottom: 1px solid #333;
    line-height: normal;
}

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

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

.cart-count {
    position: absolute;
    top: -8px;
    right: -10px;
    padding: 1px 4px;
    background: var(--accent);
    border-radius: 10px;
    font-size: 9px;
    line-height: 1;
}

.login-link {
    display: inline-block;
    padding: 4px 12px;
    border: 1px solid var(--accent);
    color: var(--accent);
    text-decoration: none;
    font-size: 11px;
    line-height: normal;
    vertical-align: middle;
    transition: 0.3s;
}

.login-link:hover { background: var(--accent); color: #fff; }

/* 3. 主内容网格 (Main Content & Grid) */
.main {
    display: block;
    padding: 80px 6% 30px;
    animation: fadeIn 0.8s ease forwards;
}

.grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2%; 
    width: 100%;
    padding: 10px 0;
}

.card {
    display: flex;
    flex-direction: column;
    width: 23.5%; 
    margin-bottom: 30px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 24px;
    transition: 0.5s cubic-bezier(0.2, 1, 0.3, 1);
    cursor: default; 
}

/* 详情卡片特有样式 */
.card.has-detail { cursor: pointer; }
.card.has-detail:hover {
    transform: translateY(-12px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
}

.card img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 16px;
}

.card h3 {
    margin: 20px 0 8px;
    font-size: 17px;
    font-weight: 500;
    min-height: 2.4em;
}

.card .artist {
    margin-bottom: 20px;
    color: #555;
    font-size: 13px;
    flex-grow: 1;
}

.card .price {
    margin-top: auto; 
    margin-bottom: 20px;
    color: var(--accent);
    font-size: 18px;
    font-weight: 700;
}

.btn-group { display: flex; gap: 12px; }
.btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.btn-jiaru { background: var(--accent); color: #fff; }
.btn-jiaru:hover { background: #e03d00; transform: scale(1.02); }
.btn-sec { background: #1a1a1a; color: #888; }
.btn-sec:hover { color: #fff; background: #252525; }

/*品牌特色*/
.why {
    margin-top: 150px;
    padding: 120px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.why-title {
    margin-bottom: 80px;
    padding-left: 20px;
    border-left: 4px solid var(--accent);
    font-size: 26px;
    font-weight: 200;
    letter-spacing: 4px;
}

.benefit-flex {
    display: block;
    text-align: center;
    font-size: 0; 
}

.benefit-box {
    display: inline-block;
    vertical-align: top;
    width: 25%;
    min-width: 250px;
    margin-bottom: 60px;
    padding: 0 15px;
    text-align: center;
    font-size: 13px;
}

.why-img {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    margin: 0 auto 35px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    overflow: hidden;
}

.why-img img { width: 100%; height: 100%; object-fit: cover; }
.little-title { margin-bottom: 18px; color: #fff; font-size: 16px; }
.why-text { padding: 0 10px; color: #666; font-size: 13px; line-height: 1.8; }

/* 5. 页脚 (Footer) */
footer.big-ft {
    margin-top: 80px;
    padding: 100px 6% 40px;
    background: #000;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    clear: both;
}

.ft-container { max-width: 1400px; margin: 0 auto; font-size: 0; text-align: center; }
.ft-text, .ft-center { display: inline-block; vertical-align: top; font-size: 14px; }
.ft-text { width: 30%; text-align: left; }
.ft-center { width: 40%; text-align: center; }
.ft-text.right { text-align: right; }

.ft-text h4 { margin-bottom: 30px; color: var(--accent); font-size: 11px; letter-spacing: 4px; text-transform: uppercase; }
.ft-text a { display: block; margin-bottom: 15px; color: #555; text-decoration: none; font-size: 12px; transition: 0.3s; }
.ft-text a:hover { color: #fff; }
.ft-center .big-logo { display: block; margin-bottom: 25px; color: #fff; font-size: 32px; font-weight: 200; letter-spacing: 15px; text-transform: uppercase; }
.ft-center p { color: #555; font-size: 13px; line-height: 2; }
.ft-bottom-line { margin-top: 100px; padding-top: 35px; border-top: 1px solid rgba(255, 255, 255, 0.03); color: #222; font-size: 9px; overflow: hidden; }
.ft-bottom-line div:first-child { float: left; }
.ft-bottom-line div:last-child { float: right; }

/* 6. 交互组件 */
#tanchuang {
    position: fixed; top: 0; left: 0; z-index: 4000;
    display: none; align-items: center; justify-content: center;
    width: 100%; height: 100%; background: rgba(0, 0, 0, 0.95); backdrop-filter: blur(15px);
}

.track-item {
    padding: 12px 15px; border-bottom: 1px solid #111;
    display: flex; align-items: center; cursor: pointer; transition: 0.3s; color: #888;
}
.track-item:hover { background: rgba(255, 255, 255, 0.05); color: var(--accent); padding-left: 20px; }

#previewPlayer {
    position: fixed; bottom: -100px; left: 50%; transform: translateX(-50%);
    background: rgba(15, 15, 15, 0.95); backdrop-filter: blur(10px);
    border: 1px solid #222; padding: 10px 30px; border-radius: 50px;
    display: flex; justify-content: space-between; align-items: center;
    width: auto; min-width: 420px; z-index: 5000;
    transition: bottom 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes rotateRecord { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }