/* ============================================================
   页脚样式（来自 footer.html，类名以 zb- 前缀，避免与既有样式冲突）
   ============================================================ */

/* ===== 页脚主体 ===== */
.zb-footer {
    --zb-accent: #4f46e5;
    --zb-accent-2: #8b5cf6;
    --zb-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --zb-ink: #0f172a;
    --zb-muted: #64748b;
    --zb-muted-2: #94a3b8;
    --zb-border: #f1f5f9;
    --zb-bg: rgba(15, 23, 42, 0.03);
    width: 100%;
    padding: 30px 0;
    color: var(--zb-muted);
    background: var(--zb-bg);
    border-top: 1px solid var(--zb-border);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    font-size: 13px;
    line-height: 1.7;
}

/* 作用域内的微型重置 */
.zb-footer *,
.zb-footer *::before,
.zb-footer *::after {
    box-sizing: border-box;
}

.zb-footer ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.zb-footer li {
    list-style: none;
    padding: 0;
}

.zb-footer p {
    margin: 0;
}

.zb-footer img {
    display: block;
    max-width: 100%;
}

.zb-footer [hidden] {
    display: none;
}

.zb-footer a {
    color: var(--zb-muted);
    text-decoration: none;
    transition: color .25s;
}

.zb-footer a:hover {
    color: var(--zb-accent);
}

.zb-footer__container {
    width: 90%;
    max-width: 1300px;
    margin: 0 auto;
}

.zb-footer__list {
    display: flex;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 20px;
}

.zb-footer__list>li {
    margin-top: 5px;
    margin-bottom: 5px;
}

/* 左侧品牌区 */
.zb-footer__brand {
    flex: 1 1 240px;
    min-width: 0;
    max-width: 300px;
}

.zb-footer__logo {
    margin-bottom: 12px;
}

.zb-footer__logo img {
    height: 40px;
    width: auto;
}

.zb-footer__desc {
    max-width: 300px;
    font-size: .9em;
    color: var(--zb-muted);
}

/* 中间主区 */
.zb-footer__main {
    flex: 1 1 460px;
    min-width: 0;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.zb-footer__links {
    margin-bottom: 10px;
}

.zb-footer__links a {
    font-size: 13px;
}

.zb-footer__links a+a::before {
    content: '';
    width: 4px;
    height: 4px;
    margin: 0 .5em;
    border-radius: 50%;
    display: inline-block;
    vertical-align: middle;
    background: currentColor;
    opacity: .3;
}

.zb-footer__copyright {
    font-size: .9em;
    color: var(--zb-muted-2);
}

.zb-footer__police {
    margin-top: 6px;
}

.zb-footer__police a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--zb-muted-2);
}

.zb-footer__police svg {
    width: 12px;
    height: 12px;
    flex: none;
}

/* 联系图标行 */
.zb-footer__contact {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
}

.zb-footer__contact-item {
    position: relative;
    display: inline-flex;
}

.zb-footer__contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 100%;
    color: var(--zb-muted);
    background: rgba(15, 23, 42, 0.04);
    border: 1px solid var(--zb-border);
    transition: color .25s, background .25s, border-color .25s, transform .25s;
}

.zb-footer__contact-btn svg {
    width: 18px;
    height: 18px;
    display: block;
}

.zb-footer__contact-btn:hover,
.zb-footer__contact-item:focus-within .zb-footer__contact-btn,
.zb-footer__contact-item.is-open .zb-footer__contact-btn {
    color: var(--zb-accent);
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.25);
    transform: translateY(-2px);
}

/* 微信二维码悬浮面板 */
.zb-footer__wechat-pop {
    position: absolute;
    left: -55px;
    bottom: calc(100% + 8px);
    width: 140px;
    padding: 8px 8px 10px;
    background: #ffffff;
    border: 1px solid var(--zb-border);
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.14);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity .22s, transform .22s, visibility .22s;
    z-index: 20;
}

.zb-footer__wechat-pop::after {
    content: '';
    position: absolute;
    left: 72px;
    bottom: -6px;
    width: 10px;
    height: 10px;
    background: #ffffff;
    border-right: 1px solid var(--zb-border);
    border-bottom: 1px solid var(--zb-border);
    transform: translateX(-50%) rotate(45deg);
}

.zb-footer__wechat-pop img {
    width: 100%;
    height: auto;
    margin: 0 auto;
    border-radius: 6px;
}

.zb-footer__wechat-tip {
    display: block;
    margin-top: 6px;
    font-size: .82em;
    color: var(--zb-muted-2);
}

.zb-footer__wechat:hover .zb-footer__wechat-pop,
.zb-footer__wechat:focus-within .zb-footer__wechat-pop,
.zb-footer__wechat.is-open .zb-footer__wechat-pop {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 右侧二维码卡片 */
.zb-footer__qr {
    flex: 0 0 auto;
    margin-left: auto;
    align-self: flex-end;
}

.zb-footer__mini {
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 6px;
}

.zb-footer__mini-item {
    text-align: center;
}

.zb-footer__qr-img {
    width: 90px;
    height: 90px;
    background: #ffffff;
    border: 1px solid var(--zb-border);
    border-radius: 6px;
}

.zb-footer__mini-cap {
    margin-top: 6px;
    font-size: .9em;
    opacity: .8;
    color: var(--zb-muted);
}

/* ===== 响应式：<768 隐藏品牌、纵向居中堆叠 ===== */
@media (max-width: 767px) {
    .zb-footer {
        padding: 20px 0;
    }

    .zb-footer__brand {
        display: none;
    }

    .zb-footer__container {
        text-align: center;
    }

    .zb-footer__list {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 16px;
    }

    .zb-footer__main {
        flex-basis: auto;
        width: 100%;
        max-width: 100%;
    }

    .zb-footer__qr {
        margin-left: 0;
        align-self: center;
    }

    .zb-footer__contact {
        justify-content: center;
    }

    .zb-footer__wechat-pop {
        left: 50%;
        transform: translate(-50%, 6px);
    }

    .zb-footer__wechat-pop::after {
        left: 50%;
    }

    .zb-footer__wechat:hover .zb-footer__wechat-pop,
    .zb-footer__wechat:focus-within .zb-footer__wechat-pop,
    .zb-footer__wechat.is-open .zb-footer__wechat-pop {
        transform: translate(-50%, 0);
    }
}

@media (max-width: 576px) {
    .zb-footer {
        padding: 16px 0;
    }

    .zb-footer__links {
        line-height: 2;
    }
}