@charset "utf-8";
.top-bar{background:#002855;color:#fff;font-size:12px;padding:6px 0;}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;}
.top-bar a{color:#ccc;margin-left:12px;}
.top-bar a:hover{color:#fff;}

/* 横幅 */
.banner{background:linear-gradient(135deg,#002855 0%,#003d7a 50%,#1a6fbf 100%);padding:30px 0;position:relative;overflow:hidden;}
.banner::before{content:'';position:absolute;top:-50%;right:-10%;width:400px;height:400px;background:rgba(255,255,255,0.03);border-radius:50%;}
.banner .container{display:flex;align-items:center;justify-content:space-between;}
.banner-left h1{color:#fff;font-size:28px;font-weight:700;letter-spacing:2px;}
.banner-left p{color:rgba(255,255,255,0.8);font-size:14px;margin-top:6px;letter-spacing:1px;}
.banner-right a{color:rgba(255,255,255,0.9);border:1px solid rgba(255,255,255,0.5);padding:8px 20px;border-radius:4px;font-size:13px;display:inline-block;transition:all .3s;}
.banner-right a:hover{background:rgba(255,255,255,0.15);color:#fff;}

/* 导航 */
.nav{background:#003d7a;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,0.15);}
.nav ul{display:flex;width:100%;max-width:1200px;margin:0 auto;padding:0 15px;}
.nav ul li{position:relative;flex:1;text-align:center;}
.nav ul li a{display:block;color:#fff;padding:14px 0;font-size:15px;font-weight:500;transition:background .3s;letter-spacing:1px;}
.nav ul li a:hover,.nav ul li.active a{background:#1a6fbf;}
.sub{
    display:none;
    position:absolute;
    left:50%;
    -webkit-transform:translateX(-50%);
    -ms-transform:translateX(-50%);
    -o-transform:translateX(-50%);
    transform:translateX(-50%);
    top:100%; /* 修改：110%改成100%，紧贴父菜单，消除hover间隙，防止鼠标移过去菜单消失 */
    width:100%;
    background-color:#fff;
    padding:10px;
    box-shadow:0 4px 12px rgba(0,0,0,0.12); /* 增加下拉阴影，体验更好 */
}
/* 关键：hover父li显示下拉 */
.nav ul li:hover .sub {
    display:block;
}
.sub a,.nav ul li .sub a{
    display:block;
    padding: 10px 0;
    margin-bottom: 0;
    font-size:16px;
    text-align:center;
    transition:.3s;
    color:#003d7a; /* 补充下拉文字颜色，不然白色背景看不见文字 */
}
.sub a:last-child{
    margin-bottom:0;
}
.sub a:hover,.nav ul li:hover .sub a:hover{
    color:#fff;
}

.footer{background:#002855;color:rgba(255,255,255,0.7);padding:30px 0;margin-top:20px;}
.footer-content{display:flex;justify-content:space-between;align-items:flex-start;}
.footer-info p{font-size:13px;line-height:2;}
.footer-info strong{color:#fff;}
.footer-qr{text-align:center;}
.footer-qr .placeholder-qr{width:100px;height:100px;background:rgba(255,255,255,0.1);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:11px;color:rgba(255,255,255,0.4);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);margin-top:20px;padding-top:14px;text-align:center;font-size:12px;color:rgba(255,255,255,0.4);}

 *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box;}
        html { scroll-behavior: smooth; font-size: 16px;}
        body {
            font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
            color: #333; background: #f5f7fa; line-height: 1.6;}
        a { text-decoration: none; color: inherit; transition: color .25s;}
        ul { list-style: none;}
        img { max-width: 100%; display: block;}

        /* ====== Utility ====== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px;}
        .section-title {
            display: flex; align-items: center; gap: 12px;
            margin-bottom: 32px; padding-bottom: 14px;
            border-bottom: 2px solid #e8ecf1;}
        .section-title h2 {
            font-size: 1.6rem; color: #002855; font-weight: 700;
            position: relative; padding-left: 16px;}
        .section-title h2::before {
            content: ''; position: absolute; left: 0; top: 4px;
            width: 4px; height: 24px; background: linear-gradient(180deg, #003d7a, #1a6fbf);
            border-radius: 2px;}
        .section-title a.more {
            margin-left: auto; font-size: .85rem; color: #7a8da0;
            transition: color .25s;}
        .section-title a.more:hover { color: #003d7a;}

        /* ====== Scroll Reveal ====== */
        .reveal {
    /* 初始状态：隐藏、向下偏移 */
    opacity: 0;
    transform: translateY(30px);

    /* 动画定义：总时长0.7s，延迟3s后开始播放 */
    animation: revealAnim 0.5s ease forwards;
    animation-delay: .5s;
}

@keyframes revealAnim {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

        /* ====== Top Bar ====== */
        .top-bar {
            background: #001d3d; color: rgba(255,255,255,.7);
            font-size: .8rem; padding: 6px 0;}
        .top-bar .container { display: flex; justify-content: space-between; align-items: center;}
        .top-bar a { color: rgba(255,255,255,.7);}
        .top-bar a:hover { color: #fff;}

        /* ====== Header / Navbar ====== */
      /*  .header {
            background: linear-gradient(135deg, #002855 0%, #003d7a 50%, #1a6fbf 100%);
            /* background: #fff; */
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0,0,0,.08);
            }
        .header .container {display: flex;align-items: center;justify-content: space-between;height: 80px;}
        .logo {display: flex;align-items: center;gap: 0px;}
        .logo img {height: 60px;}
        .logo-text { line-height: 1.25;}
        .logo-text .zh { font-size: 1.2rem; font-weight: 700; color: #002855;}
        .logo-text .en { font-size: .7rem; color: #7a8da0; letter-spacing: .5px;}
*/
     /*  .nav { display: flex; gap: 0;}
        .nav a {
            display: block;
            padding: 0 22px;
            line-height: 72px;
            font-size: .95rem;
            /* color: #444; */
            color: #fff;
            font-weight: 500;
            position: relative;
            transition: color .25s;
            }
        .nav a::after {
            content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 3px;
            background: #003d7a; border-radius: 2px; transition: all .3s; transform: translateX(-50%);}
        .nav a:hover, .nav a.active { color: #fff;}
        .nav a:hover::after, .nav a.active::after { width: 60%;}
*/
        .hamburger {
            display: none; flex-direction: column; gap: 5px; cursor: pointer;
            background: none; border: none; padding: 8px;}
        .hamburger span {
            width: 24px; height: 2.5px; background: #002855;
            border-radius: 2px; transition: all .3s;}

        /* ====== Hero Carousel ====== */
        .hero {
            position: relative; overflow: hidden;
            max-height: 360px; background: #001d3d;
            margin: 0 auto; max-width: 1200px;
            border-radius: 0 0 12px 12px;}
        .hero-track {
            display: flex; transition: transform .6s cubic-bezier(.25,.8,.25,1);}
        .hero-slide {
            min-width: 100%; position: relative;}
        .hero-slide img {
            width: 100%; height: 360px; object-fit: cover;}
        .hero-dots {
            position: absolute; bottom: 16px; right: 30px;
            display: flex; gap: 8px; z-index: 10;}
        .hero-dots button {
            width: 10px; height: 10px; border-radius: 50%; border: 2px solid #fff;
            background: transparent; cursor: pointer; transition: all .3s; padding: 0;}
        .hero-dots button.active { background: #fff; transform: scale(1.2);}
        .hero-arrow {
            position: absolute; top: 50%; transform: translateY(-50%);
            width: 44px; height: 44px; border-radius: 50%;
            background: rgba(0,0,0,.35); color: #fff; border: none;
            font-size: 1.2rem; cursor: pointer; z-index: 10;
            display: flex; align-items: center; justify-content: center;
            transition: background .3s;}
        .hero-arrow:hover { background: rgba(0,0,0,.6);}
        .hero-arrow.prev { left: 16px;}
        .hero-arrow.next { right: 16px;}

        /* ====== About ====== */
        .about { padding: 60px 0; background: #fff;}
        .about-content {
            display: flex; gap: 40px; align-items: flex-start;}
        .about-text {
            flex: 1; font-size: .95rem; line-height: 1.9; color: #555;
            text-indent: 2em;}
        .about-stats {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
            min-width: 280px;}
        .stat-card {
            background: linear-gradient(135deg, #f0f5fb, #e8eef6);
            border-radius: 12px; padding: 20px; text-align: center;
            transition: transform .3s, box-shadow .3s;}
        .stat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,61,122,.1);}
        .stat-card .num {
            font-size: 2rem; font-weight: 800; color: #003d7a;
            background: linear-gradient(135deg, #003d7a, #1a6fbf);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;}
        .stat-card .label { font-size: .8rem; color: #7a8da0; margin-top: 4px;}

        /* ====== Journals ====== */
        .journals { padding: 60px 0;}
        .journals-grid {
            display: grid; grid-template-columns: repeat(7, 1fr);
            gap: 18px;}
        .journal-card {
            background: #fff; border-radius: 12px; overflow: hidden;
            box-shadow: 0 2px 12px rgba(0,0,0,.06);
            transition: transform .35s cubic-bezier(.25,.8,.25,1), box-shadow .35s;
            cursor: pointer; position: relative;}
        .journal-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 40px rgba(0,61,122,.15);}
        .journal-card .cover {
            width: 100%; aspect-ratio: 3/4; overflow: hidden;
            background: #e8ecf1;}
        .journal-card .cover img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform .5s;}
        .journal-card:hover .cover img { transform: scale(1.06);}
        .journal-card .info {
            padding: 10px 8px; text-align: center;}
        .journal-card .info .name-zh {
            font-size: .78rem; font-weight: 600; color: #002855;
            margin-bottom: 2px; line-height: 1.3;}
        .journal-card .info .name-en {
            font-size: .65rem; color: #7a8da0; line-height: 1.2;}
        .journal-card .overlay {
            position: absolute; inset: 0; background: rgba(0,40,85,.8);
            display: flex; align-items: center; justify-content: center;
            opacity: 0; transition: opacity .35s; border-radius: 12px;}
        .journal-card:hover .overlay { opacity: 1;}
        .journal-card .overlay span {
            color: #fff; font-size: .9rem; font-weight: 500;
            border: 1.5px solid rgba(255,255,255,.6); border-radius: 20px;
            padding: 8px 20px; transition: background .3s;}
        .journal-card:hover .overlay span:hover { background: rgba(255,255,255,.15);}

        /* ====== News ====== */
        .news { padding: 60px 0; background: #fff;}
        .news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px;}

        /* Featured news (left, large) */
        .news-featured {}
        .news-featured .feat-img {
            width: 100%; height: 280px; overflow: hidden;
            border-radius: 12px; margin-bottom: 16px;}
        .news-featured .feat-img img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform .5s;}
        .news-featured:hover .feat-img img { transform: scale(1.04);}
        .news-featured h3 { font-size: 1.15rem; color: #002855; margin-bottom: 8px;}
        .news-featured h3 a:hover { color: #1a6fbf;}
        .news-featured p {
            font-size: .85rem; color: #777; line-height: 1.7;
            display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;}

        /* News list (right) */
        .news-list { display: flex; flex-direction: column; gap: 0;}
        .news-item {
            display: flex; gap: 16px; align-items: flex-start;
            padding: 16px 0; border-bottom: 1px solid #eef1f5;
            transition: background .25s;}
        .news-item:last-child { border-bottom: none;}
        .news-item:hover { background: rgba(0,61,122,.02);}
        .news-item .date-box {
            min-width: 56px; text-align: center;
            background: #f0f5fb; border-radius: 8px; padding: 8px 6px;}
        .news-item .date-box .day { font-size: 1.4rem; font-weight: 700; color: #003d7a; line-height: 1;}
        .news-item .date-box .ym { font-size: .65rem; color: #7a8da0; margin-top: 2px;}
        .news-item .news-title { font-size: .9rem; color: #333; font-weight: 500; line-height: 1.6;}
        .news-item:hover .news-title { color: #003d7a;}

        /* ====== Notifications + Downloads ====== */
        .notice-download { padding: 60px 0;}
        .nd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px;}
        .panel {
            background: #fff; border-radius: 14px;
            box-shadow: 0 2px 16px rgba(0,0,0,.05); padding: 28px 28px 20px;}
        .panel-header {
            display: flex; align-items: center; justify-content: space-between;
            margin-bottom: 20px; padding-bottom: 14px; border-bottom: 2px solid #eef1f5;}
        .panel-header h3 {
            font-size: 1.15rem; color: #002855; font-weight: 700;
            padding-left: 14px; position: relative;}
        .panel-header h3::before {
            content: ''; position: absolute; left: 0; top: 3px;
            width: 4px; height: 20px; background: #003d7a; border-radius: 2px;}
        .panel-header a.more { font-size: .8rem; color: #7a8da0;}
        .panel-header a.more:hover { color: #003d7a;}

        .notice-list li {
            display: flex; align-items: baseline; gap: 12px;
            padding: 12px 0; border-bottom: 1px dashed #eef1f5;}
        .notice-list li:last-child { border-bottom: none;}
        .notice-list .dot {
            width: 6px; height: 6px; border-radius: 50%; background: #003d7a;
            flex-shrink: 0; margin-top: 7px;}
        .notice-list .txt { flex: 1; font-size: .88rem; color: #444;}
        .notice-list li:hover .txt { color: #003d7a;}
        .notice-list .dt { font-size: .75rem; color: #aaa; white-space: nowrap;}

        .download-list li {
            display: flex; align-items: center; gap: 14px;
            padding: 12px 0; border-bottom: 1px dashed #eef1f5;
            transition: background .25s;}
        .download-list li:last-child { border-bottom: none;}
        .download-list li:hover { background: #f8fafc;}
        .download-list .icon-dl {
            width: 36px; height: 36px; border-radius: 8px;
            background: linear-gradient(135deg, #e8f0fa, #d4e3f5);
            display: flex; align-items: center; justify-content: center;
            flex-shrink: 0;}
        .download-list .icon-dl svg { width: 18px; height: 18px; fill: #003d7a;}
        .download-list .dl-info { flex: 1;}
        .download-list .dl-info .dl-name {
            font-size: .85rem; color: #444; transition: color .25s;}
        .download-list li:hover .dl-name { color: #003d7a;}
        .download-list .dl-info .dl-date { font-size: .72rem; color: #aaa;}

        /* ====== Footer ====== */
        .footer {
            background: #001d3d; color: rgba(255,255,255,.7);
            padding: 40px 0 0; margin-top: 40px;}
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
            padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,.1);}
        .footer h4 {
            color: #fff; font-size: 1rem; margin-bottom: 16px;
            position: relative; padding-bottom: 10px;}
        .footer h4::after {
            content: ''; position: absolute; bottom: 0; left: 0;
            width: 30px; height: 2px; background: #1a6fbf;}
        .footer p { font-size: .85rem; line-height: 1.8;}
        .footer ul li { padding: 4px 0;}
        .footer ul li a { font-size: .85rem; color: rgba(255,255,255,.6);}
        .footer ul li a:hover { color: #fff;}
        .footer-bottom {
            text-align: center; padding: 18px 0;
            font-size: .78rem; color: rgba(255,255,255,.4);}

        /* ====== Back to Top ====== */
        .back-top {
            position: fixed; bottom: 30px; right: 30px; z-index: 999;
            width: 42px; height: 42px; border-radius: 50%;
            background: #003d7a; color: #fff; border: none;
            font-size: 1.1rem; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            opacity: 0; transform: translateY(20px);
            transition: all .35s; box-shadow: 0 4px 14px rgba(0,61,122,.3);}
        .back-top.show { opacity: 1; transform: translateY(0);}
        .back-top:hover { background: #002855;}

        /* ====== Responsive ====== */
        @media (max-width: 960px) {
            .about-content { flex-direction: column;}
            .about-stats { min-width: auto;}
            .news-grid { grid-template-columns: 1fr;}
            .nd-grid { grid-template-columns: 1fr;}
            .footer-grid { grid-template-columns: 1fr; gap: 24px;}
        }
        @media (max-width: 768px) {
            .hamburger { display: flex;}
            .nav {
                display: none; position: absolute; top: 72px; left: 0; right: 0;
                background: #fff; flex-direction: column;
                box-shadow: 0 8px 24px rgba(0,0,0,.1);}
            .nav.open { display: flex;}
            .nav a { line-height: 48px; padding: 0 24px; border-bottom: 1px solid #f0f0f0;}
            .hero-slide img { height: 240px;}
            .journals-grid { grid-template-columns: repeat(4, 1fr); gap: 14px;}
            .hero { max-height: 240px;}
        }
        @media (max-width: 480px) {
            .journals-grid { grid-template-columns: repeat(2, 1fr);}
            .news-featured .feat-img { height: 180px;}
        }