/* ================================================
   内页 Banner
   ================================================ */

/* --- 动效 keyframes --- */
@keyframes bannerTitleIn {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes bannerEnIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.inner-banner {
    position: relative;
    height: 380px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.inner-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,30,80,0.72) 0%, rgba(65,119,183,0.45) 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}
/* 底部装饰线（静态） */
.inner-banner-overlay::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%; transform: translateX(-50%);
    width: 64px; height: 3px;
    background: rgba(163,196,245,0.7);
    border-radius: 2px;
}
.inner-banner-content {
    padding-bottom: 10px;
    text-align: center;
    position: relative;
    z-index: 2;
}
.inner-banner-title {
    font-size: 38px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.35);
    letter-spacing: 2px;
    animation: bannerTitleIn 0.85s cubic-bezier(.22,.6,.36,1) 0.2s both;
}
.inner-banner-en {
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    letter-spacing: 6px;
    font-weight: 400;
    margin-top: 2px;
    margin-bottom: 14px;
    animation: bannerEnIn 0.85s ease 0.5s both;
}
.inner-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}
.inner-breadcrumb a {
    color: rgba(255,255,255,0.85);
    transition: color 0.3s;
}
.inner-breadcrumb a:hover { color: #fff; }
.inner-breadcrumb .sep { color: rgba(255,255,255,0.45); font-size: 16px; }

/* ================================================
   关于我们 - 公司简介区
   ================================================ */
.about-intro-section {
    padding: 80px 0;
    background: #fff;
}
.about-intro-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.about-intro-left {
    animation: fadeInLeftSoft .75s ease both;
}
.about-intro-right {
    animation: fadeInRightSoft .75s ease .12s both;
}
.section-en-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    color: #4177b7;
    border: 1px solid #4177b7;
    padding: 3px 10px;
    border-radius: 2px;
    margin-bottom: 14px;
}
.about-intro-title {
    font-size: 26px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
    line-height: 1.45;
}
.about-intro-text {
    font-size: 15px;
    color: #555;
    line-height: 2;
    margin-bottom: 30px;
}
.about-intro-text p { margin-bottom: 12px; }
.about-intro-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn-blue-inner {
    display: inline-block;
    padding: 12px 32px;
    background: linear-gradient(135deg, #2a5299 0%, #4177b7 100%);
    color: #fff;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.btn-blue-inner::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: rgba(255,255,255,0.15);
    transition: left 0.35s;
}
.btn-blue-inner:hover::before { left: 100%; }
.btn-blue-inner:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(65,119,183,0.35);
    color: #fff;
}
.btn-outline-inner {
    display: inline-block;
    padding: 11px 30px;
    border: 2px solid #4177b7;
    color: #4177b7;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}
.btn-outline-inner:hover {
    background: #4177b7;
    color: #fff;
    transform: translateY(-2px);
}

/* 右侧 stats + 图片 */
.about-intro-right {
    display: flex;
    flex-direction: column;
    gap: 22px;
}
.about-stats-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(65,119,183,0.18);
}
.about-stat-item {
    background: linear-gradient(135deg, #2a5299 0%, #4177b7 100%);
    padding: 26px 14px 20px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    animation: statFadeUp .7s ease both;
    transition: transform .25s ease, box-shadow .25s ease;
}
.about-stat-item:nth-child(even) {
    background: linear-gradient(135deg, #1a3a7a 0%, #2a5299 100%);
}
.about-stat-item:nth-child(1) { animation-delay: .05s; }
.about-stat-item:nth-child(2) { animation-delay: .18s; }
.about-stat-item:nth-child(3) { animation-delay: .31s; }
.about-stat-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 70%;
    height: 100%;
    background: linear-gradient(120deg, rgba(255,255,255,0), rgba(255,255,255,.2), rgba(255,255,255,0));
    transition: left .55s ease;
}
.about-stat-item:hover {
    transform: translateY(-4px);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.18);
}
.about-stat-item:hover::after { left: 140%; }
@keyframes statFadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUpSoft {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeftSoft {
    from { opacity: 0; transform: translateX(-24px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRightSoft {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
}
.stat-n {
    display: inline;
    font-size: 34px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    font-family: Impact, "Arial Narrow", sans-serif;
}
.stat-u {
    font-size: 13px;
    color: rgba(255,255,255,0.8);
}
.about-stat-item p {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
    letter-spacing: 1px;
}
.about-img-box {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
    position: relative;
}
.about-img-box img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    transition: transform 0.55s;
    display: block;
}
.about-img-box:hover img { transform: scale(1.04); }

/* ================================================
   发展历程 Section — 纵向交替时间轴
   ================================================ */
.history-section {
    padding: 56px 0 70px;
    background: linear-gradient(180deg, #f0f4fa 0%, #e8eef6 100%);
    position: relative;
}
.history-hd {
    text-align: center;
    margin-bottom: 34px;
    animation: fadeUpSoft .6s ease both;
}
.history-sub {
    display: block;
    font-size: 12px;
    color: #4177b7;
    letter-spacing: 5px;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
}
.history-title {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a2e;
    position: relative;
    display: inline-block;
    padding-bottom: 16px;
}
.history-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: #4177b7;
    border-radius: 2px;
}

/* 时间轴容器 */
.history-timeline {
    position: relative;
    padding: 8px 0 4px;
}
.history-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, #4177b7 6%, #4177b7 94%, transparent);
    transform: translateX(-50%);
}

/* 条目通用 */
.ht-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 26px;
    position: relative;
    opacity: 0;
}
.ht-left {
    animation: fadeInLeftSoft .65s ease both;
}
.ht-right {
    animation: fadeInRightSoft .65s ease both;
}
.ht-item:nth-child(1) { animation-delay: .06s; }
.ht-item:nth-child(2) { animation-delay: .12s; }
.ht-item:nth-child(3) { animation-delay: .18s; }
.ht-item:nth-child(4) { animation-delay: .24s; }
.ht-item:nth-child(5) { animation-delay: .30s; }
.ht-item:nth-child(6) { animation-delay: .36s; }
.ht-item:nth-child(7) { animation-delay: .42s; }
.ht-item:nth-child(8) { animation-delay: .48s; }
.ht-item:last-child { margin-bottom: 0; }
.ht-spacer { flex: 1; }

/* 卡片区 */
.ht-card-wrap { flex: 1; }
.ht-left .ht-card-wrap  { padding-right: 26px; }
.ht-right .ht-card-wrap { padding-left: 26px; }

/* 中心年份节点 */
.ht-node-wrap {
    width: 86px;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    padding-top: 3px;
    position: relative;
    z-index: 2;
}
.ht-node {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    background: linear-gradient(145deg, #1e4d9c, #4177b7);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(65,119,183,0.45), 0 0 0 5px rgba(65,119,183,0.12);
    transition: box-shadow 0.3s, transform 0.3s;
    letter-spacing: 0.3px;
    line-height: 1;
    text-align: center;
}
.ht-item:hover .ht-node {
    box-shadow: 0 6px 22px rgba(65,119,183,0.6), 0 0 0 9px rgba(65,119,183,0.18);
    transform: scale(1.07);
}

/* 卡片 */
.ht-card {
    background: #fff;
    border-radius: 10px;
    padding: 16px 18px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.07);
    border-left: 4px solid #4177b7;
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}
.ht-right .ht-card {
    border-left: none;
    border-right: 4px solid #4177b7;
}
.ht-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(65,119,183,0.16);
}

/* 指向中心线的菱形箭头 — 左卡片 */
.ht-left .ht-card::after {
    content: '';
    position: absolute;
    top: 28px; right: -9px;
    width: 18px; height: 18px;
    background: #fff;
    transform: rotate(45deg);
    box-shadow: 3px -3px 5px rgba(0,0,0,0.04);
    border-top: 1px solid rgba(0,0,0,0.04);
    border-right: 1px solid rgba(0,0,0,0.04);
}
/* 指向中心线的菱形箭头 — 右卡片 */
.ht-right .ht-card::after {
    content: '';
    position: absolute;
    top: 28px; left: -9px;
    width: 18px; height: 18px;
    background: #fff;
    transform: rotate(45deg);
    box-shadow: -3px 3px 5px rgba(0,0,0,0.04);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    border-left: 1px solid rgba(0,0,0,0.04);
}

/* 月份标签 */
.ht-month-badge {
    display: inline-block;
    background: linear-gradient(135deg, #2a5299, #4177b7);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 2px 12px;
    border-radius: 20px;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

/* 卡片小标题 */
.ht-card-title {
    font-size: 15px;
    font-weight: 700;
    color: #1a3060;
    margin-bottom: 8px;
    padding-bottom: 7px;
    border-bottom: 1px dashed #dde6f9;
}

/* 事项文字（每行带蓝色圆点） */
.ht-card p {
    font-size: 13px;
    color: #555;
    line-height: 1.6;
    padding-left: 12px;
    position: relative;
    margin-bottom: 2px;
}
.ht-card p::before {
    content: '';
    position: absolute;
    left: 0; top: 9px;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: #4177b7;
    opacity: 0.55;
}
.ht-card p:last-child { margin-bottom: 0; }

/* ================================================
   响应式
   ================================================ */
@media (max-width: 1000px) {
    .about-intro-layout { gap: 36px; }
}
@media (max-width: 860px) {
    .inner-banner { height: 220px; }
    .inner-banner-title { font-size: 26px; margin-bottom: 0; }
    .about-intro-left, .about-intro-right, .ht-item, .history-hd { animation-duration: .45s; }
    .about-intro-layout { grid-template-columns: 1fr; gap: 32px; }
    .about-img-box { display: none; }
    .history-timeline::before { left: 35px; transform: none; }
    .ht-item, .ht-item.ht-right { flex-direction: row; }
    .ht-spacer { display: none; }
    .ht-node-wrap { width: 70px; }
    .ht-node { width: 60px; height: 60px; font-size: 12px; }
    .ht-left .ht-card-wrap,
    .ht-right .ht-card-wrap { flex: 1; padding-left: 20px !important; padding-right: 0 !important; }
    .ht-left .ht-card::after, .ht-right .ht-card::after { display: none; }
    .ht-right .ht-card { border-right: none; border-left: 4px solid #4177b7; }
}
@media (max-width: 768px) {
    .inner-banner { height: 140px; animation: none; }
    .inner-banner-overlay::before { display: none; }
    .inner-banner-title { font-size: 22px; letter-spacing: 1px; animation-duration: 0.45s; animation-delay: 0.1s; }
    .inner-banner-en { font-size: 11px; letter-spacing: 3px; margin-bottom: 0; animation-duration: 0.45s; animation-delay: 0.25s; }
}
@media (max-width: 600px) {
    .about-stats-box { grid-template-columns: 1fr; gap: 2px; }
    .about-intro-btns { flex-direction: column; }
    .about-intro-left, .about-intro-right, .ht-item, .history-hd { animation: none !important; opacity: 1; }
    .history-timeline::before { left: 28px; }
    .ht-node-wrap { width: 56px; }
    .ht-node { width: 50px; height: 50px; font-size: 11px; }
    .ht-left .ht-card-wrap,
    .ht-right .ht-card-wrap { padding-left: 14px !important; }
}