/* ================================================================
   iudustry Footer v2 — 专业工业设计风格
   ================================================================ */

/* 隐藏主题原始 footer */
footer.footer { display: none !important; }

/* ── 变量 ── */
.iud-footer {
    --f-bg:       #0d1b2e;
    --f-bottom:   #071223;
    --f-border:   rgba(255,255,255,.07);
    --f-text:     #8fa3be;
    --f-heading:  #e8f0fe;
    --f-link:     #8fa3be;
    --f-link-h:   #60a5fa;
    --f-accent:   #2563eb;
    --f-green:    #07c160;
    --f-green-h:  #06ae57;
    font-family: inherit;
}

/* ── 主体 ── */
.iud-footer {
    background: var(--f-bg);
    color: var(--f-text);
    border-top: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--f-accent) 0%, #7c3aed 50%, var(--f-accent) 100%) 1;
    margin-top: 0;
}

.iud-footer-main {
    padding: 56px 0 48px;
}

/* ── 四列栅格 ── */
.iud-footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px 48px;
    align-items: start;
}

/* ── 列通用 ── */
.iud-footer-col { min-width: 0; }

/* ── 品牌列 ── */
.iud-footer-logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.iud-footer-logo-wrap img {
    border-radius: 10px;
    background: rgba(255,255,255,.06);
    padding: 4px;
    flex-shrink: 0;
}

.iud-footer-logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.iud-footer-logo-text strong {
    color: var(--f-heading);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .3px;
}

.iud-footer-logo-text span {
    font-size: 11px;
    color: var(--f-text);
    letter-spacing: .8px;
    text-transform: uppercase;
}

/* 二维码 */
.iud-footer-qr-block {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.iud-footer-qr-img {
    display: block !important;
    width: 100px !important;
    height: 100px !important;
    border-radius: 8px;
    object-fit: cover !important;
    max-width: none !important;
    flex-shrink: 0;
}

.iud-footer-qr-label {
    font-size: 12px;
    color: var(--f-text);
    margin: 0;
    text-align: center;
}

/* ── 标题 ── */
.iud-footer-heading {
    color: var(--f-heading);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
    margin: 0 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--f-border);
    position: relative;
}

.iud-footer-heading::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--f-accent);
    border-radius: 2px;
}

/* ── 链接列表 ── */
.iud-footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.iud-footer-links li a {
    color: var(--f-link);
    text-decoration: none;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color .2s, transform .2s;
}

.iud-footer-links li a::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--f-accent);
    opacity: .5;
    flex-shrink: 0;
    transition: opacity .2s, transform .2s;
}

.iud-footer-links li a:hover {
    color: var(--f-link-h);
    transform: translateX(4px);
}

.iud-footer-links li a:hover::before {
    opacity: 1;
}

/* ── 联系列表 ── */
.iud-footer-contact {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.iud-footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13.5px;
    line-height: 1.55;
}

.iud-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--f-accent);
}

.iud-footer-contact li a,
.iud-footer-contact li span {
    color: var(--f-text);
    text-decoration: none;
    transition: color .2s;
}

.iud-footer-contact li a:hover { color: var(--f-link-h); }

/* ── 微信客服按钮 ── */
.iud-wechat-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--f-green);
    color: #fff !important;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none !important;
    padding: 11px 20px;
    border-radius: 8px;
    transition: background .2s, transform .15s, box-shadow .2s;
    box-shadow: 0 4px 16px rgba(7,193,96,.25);
    white-space: nowrap;
}

.iud-wechat-btn:hover {
    background: var(--f-green-h) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(7,193,96,.35);
    color: #fff !important;
}

/* ── 底部版权栏 ── */
.iud-footer-bottom {
    background: var(--f-bottom);
    border-top: 1px solid var(--f-border);
    padding: 18px 0;
}

.iud-footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.iud-footer-copy {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #546880;
}

.iud-footer-copy a {
    color: #546880;
    text-decoration: none;
    transition: color .2s;
}

.iud-footer-copy a:hover { color: var(--f-link-h); }

.iud-footer-copy span::before {
    content: '';
}

.iud-footer-brand-tags {
    display: flex;
    align-items: center;
    gap: 8px;
}

.iud-brand-tag {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .8px;
    color: #546880;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    transition: color .2s, border-color .2s;
}

.iud-brand-tag:hover {
    color: var(--f-link-h);
    border-color: rgba(96,165,250,.3);
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
    .iud-footer-grid {
        grid-template-columns: 1.4fr 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .iud-footer-main { padding: 40px 0 32px; }
    .iud-footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px 24px;
    }
    .iud-footer-col.iud-footer-brand {
        grid-column: 1 / -1;
        display: block;
    }
    .iud-footer-bottom-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .iud-footer-grid { grid-template-columns: 1fr; }
    .iud-footer-col.iud-footer-brand { grid-column: auto; }
    .iud-footer-copy { flex-direction: column; align-items: flex-start; gap: 6px; }
}