/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; height: auto; }

/* ===== 公用容器 ===== */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ===== 顶部公告条 ===== */
.topbar {
    background: #2b2b2b;
    color: #ddd;
    font-size: 12px;
    height: 30px;
    line-height: 30px;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar a { margin: 0 5px; color: #ddd; }
.topbar a:hover { color: #fff; }

/* ===== 头部 ===== */
.header {
    background: #fff;
    padding: 18px 0;
    border-bottom: 1px solid #eee;
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.logo { display: flex; align-items: center; }
.logo-img { height: 60px; width: auto; object-fit: contain; }

.search-area {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}
.search-box {
    display: flex;
    border: 1px solid #ccc;
    border-radius: 2px;
    overflow: hidden;
    width: 100%;
}
.search-box input {
    flex: 1;
    min-width: 0;
    padding: 7px 10px;
    border: none;
    outline: none;
    font-size: 13px;
}
.search-box button {
    background: #c93131;
    color: #fff;
    border: none;
    padding: 0 22px;
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
}
.search-box button:hover { background: #a82626; }
.cert-numbers {
    font-size: 12px;
    color: #555;
    display: flex;
    gap: 14px;
}

/* ===== 导航 ===== */
.nav {
    background: #fff;
    border-top: 1px solid #e5e5e5;
    border-bottom: 1px solid #e5e5e5;
}
.nav .container {
    display: flex;
    height: 44px;
}
.nav ul {
    display: flex;
    flex: 1;
    flex-wrap: wrap;
    justify-content: space-around;
}
.nav li { flex: 1; text-align: center; min-width: 80px; line-height: 44px; }
.nav li a {
    color: #1a4f8a;
    font-size: 14px;
    display: block;
    transition: background 0.2s, color 0.2s;
}
.nav li:hover,
.nav li.active { background: #eaf2fb; color: #14406e; }

/* 移动端汉堡菜单 */
.menu-toggle {
    display: none;
    width: 100%;
    padding: 10px 0;
    background: none;
    border: none;
    font-size: 16px;
    color: #1a4f8a;
    cursor: pointer;
    text-align: center;
    line-height: 44px;
}

/* ===== Banner ===== */
.banner { width: 100%; background: #cfe9ff; }
.banner-img { width: 100%; height: auto; display: block; }

/* ===== 证书查询区 ===== */
.cert-query {
    background: #f0f4f8;
    padding: 30px 0 60px;
}
.cert-query .container {
    display: grid;
    grid-template-columns: 1fr 270px;
    gap: 20px;
    align-items: start;
}

.query-main {
    background: #fff;
    border-radius: 4px;
    padding: 30px 40px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.query-title {
    text-align: center;
    color: #1a4f8a;
    font-size: 20px;
    font-weight: bold;
    padding: 10px 0 20px;
    margin-bottom: 18px;
    border-bottom: 1px solid #eee;
}
.query-form {
    max-width: 520px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 14px 12px;
    align-items: center;
}
.query-form label {
    color: #555;
    font-size: 14px;
    text-align: right;
}
.query-form input {
    border: 1px solid #cfd6dd;
    border-radius: 3px;
    padding: 8px 10px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    width: 100%;
}
.query-form input:focus { border-color: #1a4f8a; }
.query-submit {
    grid-column: 2;
    justify-self: start;
    background: #1a4f8a;
    color: #fff;
    border: none;
    padding: 8px 28px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    letter-spacing: 4px;
}
.query-submit:hover { background: #14406e; }

/* ===== 证书查询弹窗 ===== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.modal-overlay.show { display: flex; }

.modal-box {
    background: #fff;
    border-radius: 6px;
    padding: 30px 30px 24px;
    position: relative;
    max-width: 520px;
    width: 100%;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    animation: modalIn 0.25s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9) translateY(-20px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
    position: absolute;
    top: 8px;
    right: 16px;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}
.modal-close:hover { color: #333; }

.modal-box img {
    width: 100%;
    max-width: 420px;
    margin: 0 auto 16px;
    border-radius: 3px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.12);
}
.modal-text {
    color: #1a4f8a;
    font-size: 16px;
    font-weight: bold;
    margin: 0;
}

/* ===== 侧栏 ===== */
.query-side { display: flex; flex-direction: column; gap: 14px; }

.side-card {
    background: #fff;
    border-radius: 4px;
    padding: 18px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.side-card.message h3,
.side-card.contact h3 {
    color: #1a4f8a;
    font-size: 16px;
    padding-left: 8px;
    border-left: 3px solid #1a4f8a;
    margin-bottom: 14px;
}
.side-card.message input,
.side-card.message select {
    width: 100%;
    border: 1px solid #cfd6dd;
    border-radius: 3px;
    padding: 7px 10px;
    font-size: 13px;
    margin-bottom: 10px;
    outline: none;
}
.side-card.message input:focus,
.side-card.message select:focus { border-color: #1a4f8a; }
.message-submit {
    width: 100%;
    background: #4a7cc7;
    color: #fff;
    border: none;
    padding: 8px 0;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    margin-top: 4px;
}
.message-submit:hover { background: #3a66b0; }

.side-card.consult {
    background: #4a7cc7;
    color: #fff;
    padding: 16px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.side-card.consult p { font-size: 14px; }
.side-card.consult a {
    color: #fff;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.side-card.consult a span { font-size: 18px; }

.side-card.contact p {
    color: #555;
    font-size: 13px;
    margin-bottom: 8px;
    line-height: 1.5;
}
.side-card.contact p .icon {
    color: #1a4f8a;
    margin-right: 4px;
}

/* ===== 底部 ===== */
.footer { background: #fff; }
.copyright {
    text-align: center;
    padding: 18px 0;
    font-size: 12px;
    color: #888;
    border-top: 1px solid #eee;
}

/* ===== 响应式 ===== */

/* 平板: ≤900px */
@media (max-width: 900px) {
    .cert-query .container {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .query-side {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .query-main { padding: 20px; }
}

/* 小平板: ≤700px */
@media (max-width: 700px) {
    .topbar .container {
        flex-direction: column;
        justify-content: center;
        height: auto;
    }
    .topbar { height: auto; min-height: 30px; line-height: 1.6; padding: 2px 0; }

    .header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    .search-area {
        width: 100%;
        align-items: stretch;
    }
    .search-box input { flex: 1; }
    .cert-numbers { align-self: flex-end; }

    .nav { height: auto; }
    .nav .container { height: auto; }
    .nav ul {
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    .nav li {
        flex: 0 0 auto;
        min-width: auto;
        line-height: 36px;
    }
    .nav li a { padding: 0 10px; font-size: 13px; }

    .query-side {
        grid-template-columns: 1fr;
    }
    .query-form {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .query-form label { text-align: left; }
    .query-submit { grid-column: 1; width: 100%; text-align: center; }
}

/* 手机: ≤480px */
@media (max-width: 480px) {
    .container { padding: 0 10px; }

    .topbar { font-size: 11px; }
    .topbar-right { display: none; }

    .logo-img { height: 44px; }
    .cert-numbers { font-size: 11px; gap: 8px; }

    .nav ul { display: none; }
    .nav ul.open { display: flex; flex-wrap: wrap; }
    .menu-toggle { display: block; }

    .query-main { padding: 14px 12px; }
    .query-title { font-size: 17px; }

    .cert-query { padding: 20px 0 40px; }
}