/* ==========================================================
   瑞昇网络官网 前台样式
   简约科技风 · 主色深蓝 · 全站自适应
   ========================================================== */

:root {
    --blue-900: #0a1f44;
    --blue-800: #0e2a5e;
    --blue-700: #12397a;
    --blue-600: #1d4ed8;
    --blue-500: #2f7cf6;
    --blue-100: #dbeafe;
    --blue-50:  #f0f6ff;
    --text:     #1e293b;
    --muted:    #64748b;
    --line:     #e2e8f0;
    --bg:       #f4f7fc;
    --white:    #ffffff;
    --green:    #16a34a;
    --radius:   10px;
    --shadow:   0 4px 18px rgba(10, 31, 68, .08);
    --shadow-lg: 0 10px 34px rgba(10, 31, 68, .14);
    --container: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-600); text-decoration: none; transition: color .2s; }
a:hover { color: var(--blue-500); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-weight: 600; line-height: 1.4; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------------- 顶部信息条 ---------------- */
.topbar { background: var(--blue-900); color: #cbd5e1; font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 36px; }
.topbar a { color: #cbd5e1; }
.topbar a:hover { color: #fff; }
.topbar-right span { margin-left: 18px; }

/* ---------------- 主导航 ---------------- */
.header {
    background: #fff;
    box-shadow: 0 2px 12px rgba(10, 31, 68, .06);
    position: sticky; top: 0; z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 38px; width: auto; }
.logo-text { font-size: 20px; font-weight: 700; color: var(--blue-800); letter-spacing: 1px; }

.nav ul { display: flex; gap: 4px; }
.nav a {
    display: block; padding: 8px 18px; border-radius: 6px;
    color: var(--text); font-size: 15px; font-weight: 500;
}
.nav a:hover { color: var(--blue-500); background: var(--blue-50); }
.nav li.active a { color: #fff; background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); }

.nav-toggle {
    display: none; flex-direction: column; gap: 5px; padding: 8px;
    background: none; border: 0; cursor: pointer;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--blue-800); border-radius: 2px; transition: .3s; }

/* ---------------- Banner 轮播 ---------------- */
.banner { position: relative; overflow: hidden; background: var(--blue-900); }
.banner-slider { position: relative; }
.banner-slide {
    position: absolute; inset: 0; display: flex; align-items: center;
    opacity: 0; transition: opacity .8s ease; pointer-events: none;
}
.banner-slide.active { opacity: 1; pointer-events: auto; position: relative; }
.banner-slide img.banner-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.banner-content { position: relative; z-index: 2; color: #fff; padding: 90px 0; max-width: 680px; }
.banner-content h2 { font-size: 40px; font-weight: 700; margin-bottom: 14px; letter-spacing: 2px; }
.banner-content p { font-size: 17px; color: #dbeafe; margin-bottom: 28px; }
.banner-cta { display: inline-flex; gap: 14px; }
.btn {
    display: inline-block; padding: 11px 26px; border-radius: 6px;
    font-size: 15px; font-weight: 500; border: 1px solid transparent; cursor: pointer;
    transition: all .25s; text-align: center;
}
.btn-primary { background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); color: #fff; }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(47, 124, 246, .4); }
.btn-outline { border-color: rgba(255, 255, 255, .75); color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(22, 163, 74, .4); }
.btn-blue { background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); color: #fff; }
.btn-blue:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(47, 124, 246, .4); }
.btn-outline-dark { border-color: var(--blue-500); color: var(--blue-500); }
.btn-outline-dark:hover { background: var(--blue-500); color: #fff; }
.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn-outline-light { border-color: #93c5fd; color: #93c5fd; }
.btn-outline-light:hover { background: #93c5fd; color: var(--blue-900); }

.banner-dots { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.banner-dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .4); cursor: pointer; transition: .3s; }
.banner-dots span.active { background: #fff; width: 26px; border-radius: 6px; }
.banner-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .45);
    background: rgba(10, 31, 68, .25); color: #fff; font-size: 20px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: .25s;
}
.banner-arrow:hover { background: var(--blue-500); border-color: var(--blue-500); }
.banner-arrow.prev { left: 16px; }
.banner-arrow.next { right: 16px; }

/* ---------------- 通用区块 ---------------- */
.section { padding: 64px 0; }
.section-alt { background: #fff; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 28px; color: var(--blue-800); }
.section-head .sub { color: var(--muted); margin-top: 8px; }
.section-head .bar { width: 52px; height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--blue-500), var(--blue-600)); margin: 14px auto 0; }

/* ---------------- 内页横幅 ---------------- */
.page-banner {
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, var(--blue-500) 100%);
    color: #fff; padding: 52px 0; position: relative; overflow: hidden;
}
.page-banner::after {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(circle at 85% 20%, rgba(255, 255, 255, .12) 0, transparent 40%),
        linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
    background-size: auto, 34px 34px, 34px 34px;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 30px; margin-bottom: 6px; letter-spacing: 1px; }
.page-banner .crumbs { font-size: 13px; color: #bfdbfe; }
.page-banner .crumbs a { color: #bfdbfe; }
.page-banner .crumbs a:hover { color: #fff; }

/* ---------------- 产品卡片 ---------------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); border: 1px solid var(--line);
    display: flex; flex-direction: column; transition: transform .3s, box-shadow .3s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card .card-cover { aspect-ratio: 16 / 9; overflow: hidden; }
.product-card .card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.product-card:hover .card-cover img { transform: scale(1.06); }
.product-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 18px; margin-bottom: 8px; }
.product-card h3 a { color: var(--blue-800); }
.product-card h3 a:hover { color: var(--blue-500); }
.product-card .card-intro {
    color: var(--muted); font-size: 13.5px; line-height: 1.8;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.product-card .card-tags { margin: 14px 0; display: flex; flex-wrap: wrap; gap: 6px; }
.product-card .tag {
    font-size: 12px; padding: 3px 10px; border-radius: 20px;
    background: var(--blue-50); color: var(--blue-600); border: 1px solid var(--blue-100);
}
.product-card .card-foot { display: flex; gap: 10px; margin-top: auto; }

/* ---------------- 功能亮点条 ---------------- */
.feat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feat-item { background: #fff; border-radius: var(--radius); padding: 26px 22px; text-align: center; box-shadow: var(--shadow); border: 1px solid var(--line); }
.feat-item .icon {
    width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 14px;
    background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 26px;
}
.feat-item h4 { color: var(--blue-800); margin-bottom: 6px; font-size: 16px; }
.feat-item p { color: var(--muted); font-size: 13px; }

/* ---------------- 案例 LOGO 条 ---------------- */
.case-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.case-item {
    background: #fff; border: 1px solid var(--line); border-radius: 8px;
    padding: 22px 10px; text-align: center; color: #94a3b8; font-size: 15px; font-weight: 600;
    display: flex; align-items: center; justify-content: center; min-height: 74px; transition: .3s;
}
.case-item:hover { color: var(--blue-500); border-color: var(--blue-500); box-shadow: var(--shadow); }
.case-item img { max-width: 80%; max-height: 44px; object-fit: contain; }

/* ---------------- 资讯卡片 ---------------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line); box-shadow: var(--shadow); display: flex; flex-direction: column;
    transition: transform .3s, box-shadow .3s;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card .news-cover { aspect-ratio: 16 / 9; overflow: hidden; }
.news-card .news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .news-cover img { transform: scale(1.06); }
.news-card .news-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.news-card .news-meta { font-size: 12.5px; color: var(--muted); margin-bottom: 8px; display: flex; gap: 12px; }
.news-card h3 { font-size: 16px; margin-bottom: 8px; }
.news-card h3 a { color: var(--blue-800); }
.news-card h3 a:hover { color: var(--blue-500); }
.news-card .news-summary { color: var(--muted); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-foot { margin-top: auto; padding-top: 12px; }
.news-card .news-foot a { font-size: 13px; color: var(--blue-500); }

/* ---------------- 关于我们 ---------------- */
.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.about-grid .about-text h2 { font-size: 26px; color: var(--blue-800); margin-bottom: 16px; }
.about-grid .about-text p { color: var(--muted); margin-bottom: 12px; }
.about-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.about-img img { width: 100%; height: 100%; object-fit: cover; }

.about-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 44px; }
.about-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; text-align: center; box-shadow: var(--shadow); }
.about-card .num { font-size: 30px; font-weight: 700; color: var(--blue-500); }
.about-card .label { color: var(--muted); font-size: 13.5px; margin-top: 4px; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 36px; }
.contact-info-card { background: linear-gradient(135deg, var(--blue-800), var(--blue-600)); color: #fff; border-radius: var(--radius); padding: 30px; }
.contact-info-card h3 { margin-bottom: 18px; font-size: 20px; }
.contact-info-card ul li { padding: 10px 0; border-bottom: 1px solid rgba(255, 255, 255, .15); display: flex; gap: 10px; align-items: baseline; }
.contact-info-card ul li:last-child { border-bottom: 0; }
.contact-info-card a { color: #bfdbfe; }
.contact-form { background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; color: var(--blue-800); }
.form-control {
    width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 6px;
    font-size: 14.5px; font-family: inherit; background: #fff; transition: border .2s, box-shadow .2s;
}
.form-control:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(47, 124, 246, .12); }
textarea.form-control { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-tip { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 18px; font-size: 14px; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* ---------------- 产品详情 ---------------- */
.product-detail-head { background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); border: 1px solid var(--line); display: grid; grid-template-columns: 1.15fr 1fr; gap: 30px; margin-bottom: 28px; }
.gallery-main { position: relative; border-radius: 8px; overflow: hidden; background: var(--blue-50); aspect-ratio: 16 / 9; cursor: zoom-in; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.gallery-thumbs img { width: 74px; height: 50px; object-fit: cover; border-radius: 6px; cursor: pointer; border: 2px solid transparent; opacity: .7; transition: .25s; }
.gallery-thumbs img.active { border-color: var(--blue-500); opacity: 1; }
.product-detail-info h1 { font-size: 26px; color: var(--blue-800); margin-bottom: 10px; }
.product-detail-info .intro { color: var(--muted); font-size: 14.5px; line-height: 1.9; margin-bottom: 16px; }
.info-row { display: flex; gap: 8px; margin-bottom: 8px; font-size: 14px; }
.info-row .k { color: var(--muted); flex-shrink: 0; }
.info-row .v { color: var(--text); }
.demo-btns { display: flex; gap: 14px; margin: 20px 0; flex-wrap: wrap; }
.demo-btns .btn { flex: 1; min-width: 170px; }
.demo-tip { font-size: 12.5px; color: var(--muted); background: var(--blue-50); border: 1px dashed var(--blue-100); padding: 8px 12px; border-radius: 6px; }

.product-detail-content { background: #fff; border-radius: var(--radius); padding: 30px 34px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.product-detail-content h3 { font-size: 19px; color: var(--blue-800); margin: 26px 0 12px; padding-left: 12px; border-left: 4px solid var(--blue-500); }
.product-detail-content h3:first-child { margin-top: 0; }
.rich-text { line-height: 1.9; color: #334155; }
.rich-text p { margin-bottom: 12px; }
.rich-text ul, .rich-text ol { padding-left: 22px; margin-bottom: 12px; }
.rich-text ul { list-style: disc; }
.rich-text ol { list-style: decimal; }
.rich-text li { margin-bottom: 6px; }
.rich-text img { border-radius: 6px; margin: 8px 0; }
.rich-text table { width: 100%; border-collapse: collapse; margin: 12px 0; }
.rich-text td, .rich-text th { border: 1px solid var(--line); padding: 8px 12px; }
.rich-text blockquote { border-left: 4px solid var(--blue-100); background: var(--blue-50); padding: 10px 16px; margin: 12px 0; color: var(--muted); border-radius: 0 6px 6px 0; }
.rich-text code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 13px; }
.rich-text pre { background: var(--blue-900); color: #e2e8f0; padding: 16px; border-radius: 8px; overflow-x: auto; margin: 12px 0; }
.rich-text pre code { background: none; color: inherit; }

/* ---------------- 文章 ---------------- */
.article-list-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 16px; box-shadow: var(--shadow); display: flex; gap: 20px; transition: .3s; }
.article-list-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.article-list-item .art-cover { width: 180px; flex-shrink: 0; }
.article-list-item .art-cover img { width: 180px; height: 116px; object-fit: cover; border-radius: 6px; }
.article-list-item h3 { font-size: 17px; margin-bottom: 8px; }
.article-list-item h3 a { color: var(--blue-800); }
.article-list-item h3 a:hover { color: var(--blue-500); }
.article-list-item .art-summary { color: var(--muted); font-size: 13.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-list-item .art-meta { margin-top: 10px; font-size: 12.5px; color: var(--muted); display: flex; gap: 14px; }

.article-detail { background: #fff; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.article-detail h1 { font-size: 26px; color: var(--blue-800); margin-bottom: 12px; line-height: 1.5; }
.article-detail .art-meta { color: var(--muted); font-size: 13px; padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 22px; display: flex; gap: 18px; flex-wrap: wrap; }
.article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; }
.article-nav a { max-width: 48%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------- 分页 ---------------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 34px; }
.pagination a, .pagination li.disabled::before {
    display: flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 12px; border-radius: 6px;
    background: #fff; border: 1px solid var(--line); color: var(--text); font-size: 14px; transition: .2s;
}
.pagination a:hover { border-color: var(--blue-500); color: var(--blue-500); }
.pagination li.active a { background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); color: #fff; border-color: transparent; }
.pagination li.disabled a { color: #cbd5e1; pointer-events: none; }

/* ---------------- 页脚 ---------------- */
.footer { background: var(--blue-900); color: #cbd5e1; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding: 52px 0 40px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; position: relative; padding-bottom: 8px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px; border-radius: 2px; background: var(--blue-500); }
.footer-about p { font-size: 13.5px; line-height: 1.9; margin-bottom: 16px; }
.footer-links li { margin-bottom: 9px; }
.footer-links a { color: #cbd5e1; font-size: 13.5px; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact-list li { font-size: 13.5px; margin-bottom: 9px; }
.footer-contact-list a { color: #93c5fd; }
.footer-qrcode { width: 110px; margin-top: 10px; border-radius: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); padding: 16px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; font-size: 12.5px; }
.footer-bottom a { color: #93c5fd; }
.visit-counter { display: flex; gap: 16px; color: #93c5fd; }
.visit-counter span::before { content: "●"; color: var(--blue-500); margin-right: 6px; font-size: 10px; }

/* ---------------- 放大预览 / 返回顶部 ---------------- */
.lightbox {
    position: fixed; inset: 0; z-index: 999; background: rgba(6, 16, 38, .88);
    display: flex; align-items: center; justify-content: center; padding: 30px;
}
.lightbox[hidden] { display: none; }
.lightbox img { max-width: 92%; max-height: 90%; border-radius: 6px; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
.lightbox-close {
    position: absolute; top: 18px; right: 26px; color: #fff; font-size: 42px;
    cursor: pointer; line-height: 1; opacity: .8; transition: .2s;
}
.lightbox-close:hover { opacity: 1; transform: rotate(90deg); }

.back-to-top {
    position: fixed; right: 22px; bottom: 26px; z-index: 90;
    width: 44px; height: 44px; border-radius: 50%; border: 0; cursor: pointer;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500)); color: #fff; font-size: 18px;
    box-shadow: 0 6px 16px rgba(47, 124, 246, .35); opacity: 0; visibility: hidden; transition: .3s;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 992px) {
    .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .feat-strip { grid-template-columns: repeat(2, 1fr); }
    .case-strip { grid-template-columns: repeat(3, 1fr); }
    .about-cards { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .about-grid, .contact-grid, .product-detail-head { grid-template-columns: 1fr; }
    .banner-content h2 { font-size: 32px; }
}

@media (max-width: 768px) {
    .section { padding: 46px 0; }
    .topbar-right span.topbar-mobile { display: none; }
    .nav-toggle { display: flex; }
    .header-inner { height: 60px; }
    .logo-text { font-size: 17px; }
    .nav {
        display: none; position: absolute; top: 60px; left: 0; right: 0;
        background: #fff; box-shadow: 0 10px 26px rgba(10, 31, 68, .14); border-top: 1px solid var(--line);
    }
    .nav.open { display: block; }
    .nav ul { flex-direction: column; padding: 10px 16px; gap: 2px; }
    .nav a { padding: 12px 14px; border-radius: 8px; }
    .banner-content { padding: 56px 0; }
    .banner-content h2 { font-size: 26px; }
    .banner-content p { font-size: 15px; }
    .banner-arrow { display: none; }
    .page-banner { padding: 38px 0; }
    .page-banner h1 { font-size: 24px; }
    .form-row { grid-template-columns: 1fr; }
    .article-list-item { flex-direction: column; }
    .article-list-item .art-cover, .article-list-item .art-cover img { width: 100%; height: auto; }
    .footer-bottom-inner { justify-content: center; text-align: center; }
    .visit-counter { justify-content: center; flex-wrap: wrap; }
}

@media (max-width: 560px) {
    .product-grid, .news-grid { grid-template-columns: 1fr; }
    .feat-strip, .about-cards, .case-strip { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .demo-btns .btn { min-width: 100%; }
    .banner-content h2 { font-size: 22px; }
}