/* =========================================================
   内页：国内航空快递 guonei.html
   风格延续首页（深蓝主色 #13294b / 强调金 #f5b642）
   ========================================================= */

/* 内页 banner */
.inbanner {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    background: #13294b;
}
.inbanner img { width: 100%; height: 100%; object-fit: cover; display: block; }
.inbanner:after { content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 100%; background: linear-gradient(90deg, rgba(19,41,75,.78), rgba(19,41,75,.25)); }
.inbanner_txt {
    position: absolute; left: 0; right: 0; top: 50%; transform: translateY(-50%);
    z-index: 2; text-align: left;
}
.inbanner_txt h1 { font-size: 40px; color: #fff; font-weight: 700; letter-spacing: 2px; }
.inbanner_txt p { font-size: 17px; color: #e6ebf5; margin-top: 14px; letter-spacing: 1px; }

/* 面包屑上方间距 */
.guonei .mbx { margin-top: 22px; }

/* 服务介绍 */
.serbox { padding: 38px 0 10px; }
.serlist { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.serlist li {
    position: relative;
    background: #fff; border-radius: 16px; padding: 40px 30px 32px;
    text-align: center; overflow: hidden;
    box-shadow: 0 6px 20px rgba(19,41,75,.06); transition: all .35s;
    border: 1px solid #eef0f6;
}
.serlist li:before {
    content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, #f5b642, #7e51e4); transform: scaleX(0); transform-origin: left;
    transition: transform .35s;
}
.serlist li:hover { transform: translateY(-8px); border-color: transparent; box-shadow: 0 18px 36px rgba(126,81,228,.28); background: linear-gradient(160deg, #8b63e8, #7e51e4); }
.serlist li:hover:before { transform: scaleX(1); }
.serlist .seric {
    width: 110px; height: 110px; margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    background: #fff; border: 1px solid #eef0f6; border-radius: 50%;
    box-shadow: 0 8px 20px rgba(126,81,228,.1); transition: all .35s;
}
.serlist li:hover .seric { background: rgba(255,255,255,.16); border-color: transparent; box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.serlist .seric img { width: 72px; height: 72px; object-fit: contain; transition: transform .35s; }
.serlist li:hover .seric img { transform: scale(1.1); }
.serlist li h3 { font-size: 19px; color: #13294b; font-weight: 700; transition: color .3s; }
.serlist li:hover h3 { color: #fff; }
.serlist li p { font-size: 14px; color: #888; line-height: 1.8; margin-top: 12px; transition: color .3s; }
.serlist li:hover p { color: #e9e2fb; }
.serlist .ser_more {
    display: inline-block; margin-top: 18px; font-size: 14px; color: #7e51e4; font-weight: 600;
    transition: all .3s;
}
.serlist li:hover .ser_more { color: #f5b642; }

/* 优势特色 */
.featbox { padding: 30px 0 14px; }
.featlist { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.featlist li {
    background: #f6f7fb; border-radius: 14px; padding: 26px 22px; transition: all .3s;
    border-left: 4px solid #f5b642;
}
.featlist li:hover { background: #13294b; }
.featlist li:hover h3 { color: #fff; }
.featlist li:hover p { color: #d6dcea; }
.featlist li h3 { font-size: 18px; color: #13294b; font-weight: 700; margin-bottom: 10px; }
.featlist li p { font-size: 14px; color: #777; line-height: 1.8; }

/* 响应式 */
@media (max-width: 1024px) {
    .serlist { grid-template-columns: repeat(2, 1fr); }
    .featlist { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .inbanner { height: 200px; }
    .inbanner_txt h1 { font-size: 28px; }
    .inbanner_txt p { font-size: 14px; }
    .serlist, .featlist { grid-template-columns: 1fr; }
}