body {
    margin: 0;
    padding: 0;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: #f4f6fa;
    color: #333;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
.briefcontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 10px;
    box-sizing: border-box;
}
.briefheader {
    background-color: #ffffff;
    border-bottom: 2px solid #d32f2f;
    position: sticky;
    top: 0;
    z-index: 999;
}
.briefheader .briefinner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    height: 56px;
}
.brieflogo img {
    height: 24px;
    vertical-align: middle;
}
.briefnav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 20px;
}
.briefnav li a {
    color: #555;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    transition: color 0.2s;
}
.briefnav li a:hover, .briefnav li a.briefactive {
    color: #d32f2f;
    border-bottom: 2px solid #d32f2f;
    padding-bottom: 16px;
}
.briefnoticebar {
    background-color: #ffffff;
    border: 1px solid #e3e4e6;
    padding: 10px 15px;
    margin: 10px auto 20px;
    border-radius: 4px;
    font-size: 13px;
    color: #666;
    display: flex;
    align-items: center;
}
.briefnoticebar::before {
    content: "公告";
    background-color: #d32f2f;
    color: #fff;
    padding: 2px 6px;
    font-size: 11px;
    border-radius: 2px;
    margin-right: 10px;
}
.briefsectitle {
    font-size: 14px;
    font-weight: bold;
    color: #111;
    margin: 25px 0 12px;
    border-left: 3px solid #d32f2f;
    padding-left: 10px;
    text-transform: uppercase;
}
.briefgridone {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}
.briefoneleft, .briefoneright {
    background: #ffffff;
    border: 1px solid #e3e4e6;
    border-radius: 4px;
    padding: 15px;
}
.briefonegrid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.briefcardone {
    background: #ffffff;
    border: 1px solid #f0f0f0;
    padding: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    border-radius: 4px;
    overflow: hidden;
}
.briefcardone:hover {
    border-color: #d32f2f;
}
.briefcardone img {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
}
.briefinfoone {
    overflow: hidden;
}
.brieftitleone {
    font-size: 12px;
    color: #333;
    font-weight: bold;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.briefpriceone {
    color: #d32f2f;
    font-weight: bold;
    font-size: 11px;
}
.briefgridmain {
    display: grid;
    grid-template-columns: 2.8fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}
.briefleftcol, .briefrightcol {
    background: #ffffff;
    border: 1px solid #e3e4e6;
    border-radius: 4px;
    padding: 15px;
}
.briefcardtwo {
    background: #ffffff;
    border: 1px solid #f0f0f0;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    border-radius: 4px;
    transition: transform 0.2s;
    margin-bottom: 12px;
}
.briefcardtwo:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.briefcardtwo img {
    width: 36px;
    height: 36px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
}
.brieftwodetail {
    overflow: hidden;
}
.brieftwoname {
    font-size: 13px;
    color: #333;
    font-weight: bold;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.brieftwoprice {
    color: #d32f2f;
    font-weight: bold;
    font-size: 12px;
}
.brieftablehead {
    display: flex;
    justify-content: space-between;
    padding: 8px 10px;
    background: #f7f9fa;
    border-bottom: 1px solid #e3e4e6;
    font-size: 11px;
    color: #888;
    font-weight: bold;
    margin-bottom: 10px;
}
.brieftablerow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 10px;
    border-bottom: 1px dashed #f0f0f0;
}
.brieftablerow:last-child {
    border-bottom: none;
}
.brieftableleft {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}
.brieftableleft img {
    width: 24px;
    height: 24px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
}
.brieftablename {
    font-size: 13px;
    color: #333;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.brieftablename:hover {
    color: #d32f2f;
}
.brieftableright {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}
.brieftableprice {
    color: #d32f2f;
    font-weight: bold;
    font-size: 13px;
}
.brieftablebtn {
    background: #d32f2f;
    color: #fff;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 2px;
    text-decoration: none;
}
.briefsidebarsec {
    margin-bottom: 20px;
}
.briefsidebartitle {
    font-size: 13px;
    font-weight: bold;
    color: #333;
    padding-bottom: 8px;
    border-bottom: 1px solid #e3e4e6;
    margin-bottom: 10px;
}
.briefsiderow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    font-size: 12px;
}
.briefsidename {
    color: #555;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.briefsidename:hover {
    color: #d32f2f;
}
.briefranknum {
    background: #d32f2f;
    color: #fff;
    font-size: 10px;
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
    margin-right: 8px;
}
.briefgridbottom {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}
.briefcardbottom {
    background: #ffffff;
    border: 1px solid #e3e4e6;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    border-radius: 4px;
    transition: transform 0.2s;
}
.briefcardbottom:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.briefcardbottom img {
    width: 36px;
    height: 36px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}
.brieftitlebottom {
    font-size: 12px;
    color: #333;
    font-weight: bold;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.briefpricebottom {
    color: #d32f2f;
    font-weight: bold;
    font-size: 11px;
    margin-top: 4px;
}
.briefdetailwrap {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-top: 20px;
}
.briefcard {
    background: #ffffff;
    border: 1px solid #e3e4e6;
    border-radius: 4px;
    padding: 20px;
}
.briefprodtitle {
    font-size: 20px;
    font-weight: bold;
    color: #111;
    margin-bottom: 12px;
}
.briefmeta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #888;
    border-bottom: 1px dashed #e3e4e6;
    padding-bottom: 10px;
    margin-bottom: 20px;
}
.brieffield {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}
.brieffield label {
    width: 100px;
    font-size: 13px;
    color: #555;
}
.brieffield input, .brieffield select {
    flex: 1;
    height: 38px;
    border: 1px solid #e3e4e6;
    border-radius: 4px;
    padding: 0 10px;
    outline: none;
    box-sizing: border-box;
}
.brieffield input:focus {
    border-color: #d32f2f;
}
.briefbuybtn {
    width: 100%;
    height: 44px;
    background: #d32f2f;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
.briefbuybtn:hover {
    background: #a82020;
}
.brieffooter {
    background: #1a1a1a;
    border-top: 3px solid #d32f2f;
    padding: 30px 0;
    text-align: center;
    margin-top: 40px;
}
.brieffooterlinks {
    margin-bottom: 12px;
}
.brieffooterlinks a {
    color: #bbb;
    text-decoration: none;
    font-size: 13px;
    margin: 0 10px;
}
.brieffooterlinks a:hover {
    color: #ffffff;
}
.briefcopyright {
    color: #777;
    font-size: 11px;
}
.brieforderbox {
    background: #ffffff;
    border: 1px solid #e3e4e6;
    border-radius: 4px;
    padding: 15px;
    margin-bottom: 12px;
}
.briefkami {
    color: #2fba2f;
    font-weight: bold;
}
@media (max-width: 768px) {
    .briefgridone { grid-template-columns: 1fr; }
    .briefgridmain { grid-template-columns: 1fr; }
    .briefgridbottom { grid-template-columns: repeat(2, 1fr); }
    .briefdetailwrap { grid-template-columns: 1fr; }
}