/* ============================================================
   TEMPLATE-0017 体育企业官网模板 · style.css
   风格：深蓝企业蓝 #0B3C8D + 活力橙 #F26522（体育企业模板）
   架构对标：经典企业官网（顶部信息条/下拉导航/全屏轮播/服务四宫格/
   数据条/新闻双栏/案例网格/关于图文/伙伴墙/多栏 footer）
   说明：不含全屏覆盖广告样式；仅保留常规 s17-ad 预留位
   ============================================================ */
:root {
    --s17-blue: #0B3C8D;
    --s17-blue-deep: #0A2E6E;
    --s17-blue-dark: #082452;
    --s17-orange: #F26522;
    --s17-orange-deep: #D9551A;
    --s17-ink: #1F2937;
    --s17-ink-soft: #5B6472;
    --s17-line: #E5E9F2;
    --s17-bg: #F4F6FA;
    --s17-white: #FFFFFF;
    --s17-shadow: 0 10px 30px rgba(10, 46, 110, 0.08);
    --s17-radius: 10px;
    --s17-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--s17-font);
    font-size: 15px;
    line-height: 1.75;
    color: var(--s17-ink);
    background: var(--s17-white);
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--s17-blue); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--s17-orange); }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 12px; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.35; color: var(--s17-ink); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }

.s17-skip {
    position: absolute; left: -9999px; top: 0; z-index: 999;
    background: var(--s17-blue); color: #fff; padding: 8px 16px; border-radius: 0 0 6px 0;
}
.s17-skip:focus { left: 0; color: #fff; }
.s17-sr-only {
    position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 按钮 ---------- */
.s17-btn {
    display: inline-block; padding: 10px 26px; border-radius: 6px;
    font-size: 15px; font-weight: 600; line-height: 1.5; text-align: center;
    border: 1px solid transparent; transition: all .2s ease;
}
.s17-btn-primary { background: var(--s17-orange); color: #fff; border-color: var(--s17-orange); }
.s17-btn-primary:hover { background: var(--s17-orange-deep); border-color: var(--s17-orange-deep); color: #fff; }
.s17-btn-ghost { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.75); }
.s17-btn-ghost:hover { background: #fff; color: var(--s17-blue); border-color: #fff; }
.s17-btn-outline { background: transparent; color: var(--s17-blue); border-color: var(--s17-blue); }
.s17-btn-outline:hover { background: var(--s17-blue); color: #fff; }
.s17-btn-block { display: block; width: 100%; }

/* ---------- 顶部信息条 ---------- */
.s17-topbar { background: var(--s17-blue-dark); color: rgba(255,255,255,.82); font-size: 13px; }
.s17-topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 36px; }
.s17-topbar-welcome { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s17-topbar-tools { display: flex; align-items: center; gap: 16px; white-space: nowrap; }
.s17-topbar-tools a { color: rgba(255,255,255,.92); display: inline-flex; align-items: center; gap: 5px; }
.s17-topbar-tools a:hover { color: var(--s17-orange); }
.s17-topbar-tools time { color: rgba(255,255,255,.6); }

/* ---------- 主导航 ---------- */
.s17-header {
    background: var(--s17-white);
    border-bottom: 1px solid var(--s17-line);
    position: sticky; top: 0; z-index: 90;
    box-shadow: 0 2px 12px rgba(10, 46, 110, .06);
}
.s17-header-inner { display: flex; align-items: center; gap: 24px; min-height: 78px; }

.s17-brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.s17-brand-badge { color: var(--s17-blue); display: inline-flex; }
.s17-brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.s17-brand-text strong { font-size: 21px; color: var(--s17-blue-deep); letter-spacing: .5px; }
.s17-brand-text small { font-size: 11px; color: var(--s17-ink-soft); letter-spacing: 1px; }
.s17-brand:hover .s17-brand-badge { color: var(--s17-orange); }

.s17-nav { flex: 1; min-width: 0; }
.s17-nav-list { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.s17-nav-item { position: relative; }
.s17-nav-item > a {
    display: block; padding: 26px 16px; font-size: 16px; font-weight: 600;
    color: var(--s17-ink); position: relative;
}
.s17-nav-item > a::after {
    content: ""; position: absolute; left: 16px; right: 16px; bottom: 0;
    height: 3px; background: var(--s17-orange); transform: scaleX(0);
    transform-origin: center; transition: transform .22s ease;
}
.s17-nav-item:hover > a, .s17-nav-item.is-active > a { color: var(--s17-blue); }
.s17-nav-item:hover > a::after, .s17-nav-item.is-active > a::after { transform: scaleX(1); }

/* 下拉子菜单（桌面悬停展开） */
.s17-sub-panel {
    position: absolute; top: 100%; left: 50%; transform: translate(-50%, 8px);
    min-width: 180px; background: var(--s17-white); border-radius: 8px;
    border: 1px solid var(--s17-line); box-shadow: var(--s17-shadow);
    padding: 8px 0; opacity: 0; visibility: hidden;
    transition: all .2s ease; z-index: 95;
}
.s17-nav-item:hover .s17-sub-panel,
.s17-nav-item.is-open .s17-sub-panel { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.s17-sub-list a {
    display: block; padding: 9px 18px; font-size: 14px; color: var(--s17-ink-soft);
}
.s17-sub-list a:hover { background: var(--s17-bg); color: var(--s17-blue); padding-left: 22px; }
.nav-sub-toggle { display: none; }

/* 头部右侧工具区 */
.s17-header-tools { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.s17-search { display: flex; align-items: center; background: var(--s17-bg); border: 1px solid var(--s17-line); border-radius: 999px; overflow: hidden; }
.s17-search input { border: 0; background: transparent; padding: 8px 4px 8px 14px; width: 150px; outline: none; font-size: 13px; }
.s17-search button { border: 0; background: transparent; color: var(--s17-ink-soft); padding: 8px 12px; display: inline-flex; }
.s17-search button:hover { color: var(--s17-orange); }
.s17-search:focus-within { border-color: var(--s17-blue); }

.s17-hotline { display: inline-flex; align-items: center; gap: 8px; color: var(--s17-blue-deep); }
.s17-hotline svg { color: var(--s17-orange); }
.s17-hotline-text { display: flex; flex-direction: column; line-height: 1.2; }
.s17-hotline-text small { font-size: 11px; color: var(--s17-ink-soft); }
.s17-hotline-text strong { font-size: 17px; letter-spacing: .5px; }
.s17-hotline:hover { color: var(--s17-orange); }

/* 移动端汉堡按钮（桌面隐藏） */
.nav-toggle { display: none; border: 0; background: transparent; width: 40px; height: 40px; padding: 9px 10px; flex-direction: column; justify-content: space-between; }
.nav-toggle span { display: block; height: 2px; background: var(--s17-blue-deep); border-radius: 2px; transition: transform .25s ease, opacity .25s ease; }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }
.s17-nav-overlay { display: none; position: fixed; inset: 0; background: rgba(8, 36, 82, .5); z-index: 89; }

/* ---------- 首屏焦点轮播 ---------- */
.s17-hero { position: relative; background: var(--s17-blue-dark); }
.s17-hero-stage { position: relative; height: 520px; overflow: hidden; }
.s17-hero-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .8s ease, visibility .8s ease; }
.s17-hero-slide.is-active { opacity: 1; visibility: visible; }
.s17-hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.s17-hero-slide::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(8,36,82,.82) 0%, rgba(8,36,82,.45) 46%, rgba(8,36,82,.12) 100%);
}
.s17-hero-cap {
    position: absolute; inset: 0; z-index: 2;
    display: flex; flex-direction: column; justify-content: center; align-items: flex-start;
    color: #fff;
}
.s17-hero-tag {
    display: inline-block; padding: 4px 14px; border-radius: 999px;
    background: var(--s17-orange); color: #fff; font-size: 13px; font-weight: 600;
    letter-spacing: 2px; margin-bottom: 18px;
}
.s17-hero-slogan { font-size: 44px; font-weight: 800; line-height: 1.25; margin: 0 0 14px; text-shadow: 0 2px 12px rgba(0,0,0,.25); }
.s17-hero-slogan em { font-style: normal; color: #FFD9C2; display: block; font-size: 30px; font-weight: 700; }
.s17-hero-sub { font-size: 16px; color: rgba(255,255,255,.88); max-width: 520px; margin: 0 0 26px; }
.s17-hero-btns { display: flex; gap: 14px; }

.s17-hero-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 46px; height: 46px; border: 0; border-radius: 50%;
    background: rgba(255,255,255,.16); color: #fff; font-size: 26px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s ease;
}
.s17-hero-arrow:hover { background: var(--s17-orange); }
.s17-hero-prev { left: 22px; }
.s17-hero-next { right: 22px; }
.s17-hero-dots {
    position: absolute; left: 0; right: 0; bottom: 22px; z-index: 3;
    display: flex; justify-content: center; gap: 10px;
}
.s17-hero-dots .dot {
    width: 12px; height: 12px; border-radius: 50%; border: 0;
    background: rgba(255,255,255,.45); transition: all .2s ease; padding: 0;
}
.s17-hero-dots .dot.is-on { background: var(--s17-orange); width: 30px; border-radius: 999px; }

/* ---------- 区块标题 ---------- */
.s17-sec-head { margin-bottom: 26px; }
.s17-sec-head h2 { font-size: 26px; color: var(--s17-blue-deep); position: relative; padding-left: 14px; }
.s17-sec-head h2::before {
    content: ""; position: absolute; left: 0; top: 8px; bottom: 8px;
    width: 5px; border-radius: 3px; background: var(--s17-orange);
}
.s17-sec-head h2 small { font-size: 13px; color: var(--s17-ink-soft); font-weight: 500; letter-spacing: 2px; margin-left: 10px; }
.s17-sec-head p { color: var(--s17-ink-soft); font-size: 14px; margin: 8px 0 0; padding-left: 19px; }
.s17-sec-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; }
.s17-sec-head--row p { margin: 0; }
.s17-sec-head--left { text-align: left; }
.s17-sec-head--dark h2 { color: #fff; }
.s17-sec-head--dark h2 small { color: rgba(255,255,255,.6); }
.s17-sec-more { font-size: 14px; color: var(--s17-ink-soft); white-space: nowrap; }
.s17-sec-more:hover { color: var(--s17-orange); }
.s17-sec-head--dark .s17-sec-more { color: rgba(255,255,255,.75); }
.s17-sec-head--dark .s17-sec-more:hover { color: var(--s17-orange); }

/* ---------- 服务板块四宫格 ---------- */
.s17-services { padding: 64px 16px 30px; }
.s17-services .s17-sec-head { text-align: center; }
.s17-services .s17-sec-head h2 { display: inline-block; padding-left: 14px; }
.s17-services .s17-sec-head p { text-align: center; }
.s17-services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.s17-service-card {
    background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius);
    overflow: hidden; transition: transform .25s ease, box-shadow .25s ease;
}
.s17-service-card:hover { transform: translateY(-6px); box-shadow: var(--s17-shadow); }
.s17-service-media { margin: 0; aspect-ratio: 3 / 2; overflow: hidden; }
.s17-service-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.s17-service-card:hover .s17-service-media img { transform: scale(1.06); }
.s17-service-body { padding: 18px 20px 20px; }
.s17-service-body h3 { font-size: 18px; color: var(--s17-blue-deep); margin-bottom: 8px; }
.s17-service-body p { font-size: 13.5px; color: var(--s17-ink-soft); margin-bottom: 12px; }
.s17-service-more { font-size: 13px; font-weight: 600; color: var(--s17-orange); }
.s17-service-more:hover { color: var(--s17-orange-deep); }

/* ---------- 数据实力条 ---------- */
.s17-stats { background: linear-gradient(120deg, var(--s17-blue-deep), var(--s17-blue)); padding: 46px 0; margin: 30px 0 0; }
.s17-stats ul { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.s17-stats li { text-align: center; color: #fff; position: relative; }
.s17-stats li + li::before {
    content: ""; position: absolute; left: 0; top: 12%; bottom: 12%;
    width: 1px; background: rgba(255,255,255,.22);
}
.s17-stats strong { display: block; font-size: 44px; font-weight: 800; line-height: 1.1; }
.s17-stats strong i { font-style: normal; font-size: 22px; margin-left: 2px; color: #FFB48A; }
.s17-stats span { font-size: 14px; color: rgba(255,255,255,.78); }
.s17-demo-stats { display: grid; grid-template-columns: repeat(3, 1fr); }
.s17-stat { text-align: center; color: var(--s17-blue-deep); padding: 12px 0; }
.s17-stat strong { font-size: 38px; display: block; }
.s17-stat strong i { font-style: normal; font-size: 18px; color: var(--s17-orange); }
.s17-stat span { color: var(--s17-ink-soft); font-size: 13px; }

/* ---------- 常规广告位（非全屏覆盖） ---------- */
.s17-ad {
    margin: 26px auto; min-height: 90px; border: 1px dashed #C9D3E4; border-radius: 8px;
    background: repeating-linear-gradient(45deg, #FAFBFD, #FAFBFD 12px, #F4F6FA 12px, #F4F6FA 24px);
    display: flex; align-items: center; justify-content: center;
}
.s17-ad span { color: #A7B3C7; font-size: 13px; letter-spacing: 2px; }
.s17-ad--rect { min-height: 250px; margin: 0 0 22px; }

/* ---------- 新闻双栏（8:4） ---------- */
.s17-main-grid { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 30px; padding: 44px 16px 30px; }
.s17-feed { min-width: 0; }
.s17-feed-list { display: flex; flex-direction: column; gap: 16px; }
.s17-feed-item {
    display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 18px;
    background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius);
    overflow: hidden; transition: box-shadow .25s ease, transform .25s ease;
}
.s17-feed-item:hover { box-shadow: var(--s17-shadow); transform: translateY(-3px); }
.s17-feed-thumb { display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--s17-bg); }
.s17-feed-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.s17-feed-item:hover .s17-feed-thumb img { transform: scale(1.05); }
.s17-feed-ph {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--s17-blue-deep), var(--s17-blue));
    color: rgba(255,255,255,.85); font-size: 22px; letter-spacing: 4px; font-weight: 800;
}
.s17-feed-ph em { font-style: normal; }
.s17-feed-body { padding: 14px 18px 14px 0; display: flex; flex-direction: column; }
.s17-feed-body h3 { font-size: 17px; line-height: 1.5; }
.s17-feed-body h3 a { color: var(--s17-ink); }
.s17-feed-body h3 a:hover { color: var(--s17-blue); }
.s17-feed-body p { font-size: 13.5px; color: var(--s17-ink-soft); margin: 6px 0 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.s17-feed-meta { margin-top: auto; display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: #97A1B0; }
.s17-feed-meta time { color: #97A1B0; }
.s17-feed-more { color: var(--s17-orange); font-weight: 600; }

/* ---------- 侧栏 widget ---------- */
.s17-side { display: flex; flex-direction: column; gap: 22px; }
.s17-sidebar { display: flex; flex-direction: column; gap: 22px; }
.s17-widget {
    background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius);
    padding: 20px 22px 22px;
}
.s17-widget-title {
    font-size: 17px; color: var(--s17-blue-deep); padding-bottom: 12px; margin-bottom: 14px;
    border-bottom: 2px solid var(--s17-bg); position: relative;
}
.s17-widget-title small { font-size: 11px; color: #A7B3C7; font-weight: 500; letter-spacing: 2px; margin-left: 6px; }
.s17-widget-title::after {
    content: ""; position: absolute; left: 0; bottom: -2px; width: 44px; height: 2px; background: var(--s17-orange);
}
.s17-widget-tip { font-size: 12.5px; color: #97A1B0; margin: -6px 0 12px; }

.s17-widget-list li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--s17-line); font-size: 14px; }
.s17-widget-list li:last-child { border-bottom: 0; }
.s17-widget-list li a { color: var(--s17-ink); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s17-widget-list li a:hover { color: var(--s17-orange); }
.s17-widget-list time { color: #A7B3C7; font-size: 12.5px; white-space: nowrap; }
.s17-widget-list--wide li a { white-space: normal; }

/* 热度榜（CSS counter 编号） */
.s17-rank { counter-reset: s17rank; }
.s17-rank-item { display: flex; align-items: flex-start; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--s17-line); counter-increment: s17rank; }
.s17-rank-item:last-child { border-bottom: 0; }
.s17-rank-item::before {
    content: counter(s17rank); flex-shrink: 0; width: 22px; height: 22px; border-radius: 5px;
    background: var(--s17-bg); color: var(--s17-blue); font-size: 13px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.s17-rank-item:nth-child(1)::before, .s17-rank-item:nth-child(2)::before, .s17-rank-item:nth-child(3)::before { background: var(--s17-orange); color: #fff; }
.s17-rank-item a { flex: 1; min-width: 0; font-size: 14px; color: var(--s17-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s17-rank-item a:hover { color: var(--s17-orange); }
.s17-rank-item time { flex-shrink: 0; font-size: 12px; color: #A7B3C7; margin-top: 3px; }

/* 分类目录 widget */
.s17-widget-cats li { border-bottom: 1px dashed var(--s17-line); }
.s17-widget-cats li:last-child { border-bottom: 0; }
.s17-widget-cats > li > a {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 2px; font-size: 14.5px; color: var(--s17-ink);
}
.s17-widget-cats > li > a span { color: #C2CBD9; transition: transform .2s ease; }
.s17-widget-cats > li > a:hover span { transform: translateX(4px); }
.s17-widget-cats > li.is-active > a { color: var(--s17-orange); font-weight: 700; }
.s17-widget-cats > li.is-active > a span { color: var(--s17-orange); }
.s17-widget-subcats { padding: 0 0 8px 14px; }
.s17-widget-subcats li a { display: block; padding: 6px 0; font-size: 13.5px; color: var(--s17-ink-soft); }
.s17-widget-subcats li.is-active a { color: var(--s17-orange); }
.s17-widget-subcats li a:hover { color: var(--s17-blue); }

/* CTA widget */
.s17-widget-cta { background: linear-gradient(150deg, var(--s17-blue-deep), var(--s17-blue)); border-color: transparent; }
.s17-widget-cta h2 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.s17-widget-cta p { color: rgba(255,255,255,.78); font-size: 13.5px; margin-bottom: 16px; }

/* 标签云 */
.s17-tagcloud { display: flex; flex-wrap: wrap; gap: 8px; }
.s17-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.s17-tagchip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 12px; border-radius: 999px; background: var(--s17-bg);
    font-size: 13px; color: var(--s17-ink-soft); border: 1px solid var(--s17-line);
    transition: all .2s ease;
}
.s17-tagchip i { width: 6px; height: 6px; border-radius: 50%; background: #C2CBD9; }
.s17-tagchip em { font-style: normal; font-size: 11px; color: #A7B3C7; }
.s17-tagchip:hover, .s17-tagchip.is-active { background: var(--s17-blue); border-color: var(--s17-blue); color: #fff; }
.s17-tagchip:hover i, .s17-tagchip.is-active i { background: var(--s17-orange); }
.s17-tagchip:hover em, .s17-tagchip.is-active em { color: rgba(255,255,255,.7); }
.s17-tag-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px dashed var(--s17-line); }

/* ---------- 工程案例 ---------- */
.s17-cases { background: linear-gradient(160deg, var(--s17-blue-dark) 0%, #0D2B5C 100%); padding: 60px 0 64px; margin-top: 24px; }
.s17-cases-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 190px; gap: 18px; }
.s17-case-card {
    position: relative; display: block; border-radius: var(--s17-radius); overflow: hidden;
    grid-column: span 2; grid-row: span 2;
}
.s17-case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.s17-case-card:hover img { transform: scale(1.06); }
.s17-case-mask {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 46%, rgba(8, 36, 82, .88) 100%);
}
.s17-case-info { position: absolute; left: 20px; right: 20px; bottom: 16px; color: #fff; display: flex; flex-direction: column; gap: 3px; }
.s17-case-info strong { font-size: 18px; font-weight: 700; }
.s17-case-info em { font-style: normal; font-size: 12.5px; color: rgba(255,255,255,.78); }
.s17-cases .s17-case-card:not(.s17-case-card--main) { grid-column: span 1; grid-row: span 1; }
.s17-cases .s17-case-card:not(.s17-case-card--main) .s17-case-info strong { font-size: 15px; }

/* ---------- 关于我们 ---------- */
.s17-about { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 40px; align-items: center; padding: 60px 16px 50px; }
.s17-about-media { margin: 0; position: relative; }
.s17-about-media img { border-radius: var(--s17-radius); box-shadow: var(--s17-shadow); width: 100%; aspect-ratio: 10 / 7; object-fit: cover; }
.s17-about-badge {
    position: absolute; right: -14px; bottom: -18px;
    background: var(--s17-orange); color: #fff; border-radius: var(--s17-radius);
    padding: 14px 20px; text-align: center; box-shadow: 0 12px 26px rgba(242, 101, 34, .35);
}
.s17-about-badge strong { display: block; font-size: 30px; line-height: 1.1; }
.s17-about-badge span { font-size: 12px; }
.s17-about-title { font-size: 22px; color: var(--s17-blue-deep); margin-bottom: 12px; }
.s17-about-body > p { color: var(--s17-ink-soft); font-size: 14.5px; }
.s17-about-btns { display: flex; gap: 14px; margin-top: 20px; }

.s17-check-list { margin: 0 0 8px; }
.s17-check-list li { position: relative; padding: 5px 0 5px 26px; font-size: 14.5px; color: var(--s17-ink-soft); }
.s17-check-list li::before {
    content: ""; position: absolute; left: 0; top: 11px;
    width: 15px; height: 15px; border-radius: 50%;
    background: var(--s17-orange) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='4'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center / 9px no-repeat;
}

/* ---------- 合作品牌墙 ---------- */
.s17-partners { padding: 10px 16px 64px; }
.s17-partners .s17-sec-head { text-align: center; margin-bottom: 20px; }
.s17-partners .s17-sec-head h2 { display: inline-block; }
.s17-partner-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.s17-partner-wall li {
    display: flex; align-items: center; justify-content: center;
    padding: 20px 10px; border: 1px solid var(--s17-line); border-radius: 8px;
    font-weight: 700; font-size: 15px; color: var(--s17-ink-soft); letter-spacing: 1px;
    background: var(--s17-white); transition: all .25s ease;
}
.s17-partner-wall li:hover { color: var(--s17-blue); border-color: var(--s17-blue); box-shadow: var(--s17-shadow); }

/* ---------- 内页横幅条 + 面包屑 ---------- */
.s17-strip {
    background: linear-gradient(120deg, var(--s17-blue-dark) 0%, var(--s17-blue) 70%, #1550AC 100%);
    color: #fff; padding: 34px 0;
}
.s17-strip-inner { position: relative; z-index: 1; }
.s17-strip--inner { position: relative; overflow: hidden; }
.s17-strip--inner::after {
    content: ""; position: absolute; right: -60px; top: -60px; width: 240px; height: 240px;
    border-radius: 50%; border: 30px solid rgba(255,255,255,.05);
}
.s17-strip-title { color: #fff; font-size: 28px; letter-spacing: 1px; }
.s17-strip-title--sm { font-size: 22px; }
.s17-crumbs { margin-top: 8px; font-size: 13px; color: rgba(255,255,255,.72); display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.s17-crumbs a { color: rgba(255,255,255,.85); }
.s17-crumbs a:hover { color: var(--s17-orange); }
.s17-crumbs em { font-style: normal; color: rgba(255,255,255,.4); }
.s17-crumbs [aria-current="page"] { color: #FFD9C2; }

/* ---------- 内页分栏 ---------- */
.s17-layout { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 30px; padding: 34px 16px 56px; align-items: start; }
.s17-content-main { min-width: 0; }

/* 列表头 */
.s17-list-head { margin-bottom: 18px; }
.s17-list-head h2 { font-size: 22px; color: var(--s17-blue-deep); }
.s17-list-head p { font-size: 13.5px; color: var(--s17-ink-soft); margin: 4px 0 0; }

/* 文章列表横卡 */
.s17-post-list { display: flex; flex-direction: column; gap: 16px; }
.s17-post { background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); overflow: hidden; transition: box-shadow .25s ease, transform .25s ease; }
.s17-post:hover { box-shadow: var(--s17-shadow); transform: translateY(-3px); }
.s17-post-link { display: grid; grid-template-columns: 92px minmax(0, 1fr) 150px; align-items: stretch; gap: 18px; }
.s17-post-date {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: var(--s17-bg); border-right: 1px solid var(--s17-line); padding: 10px 6px;
}
.s17-post-date strong { font-size: 26px; color: var(--s17-blue); line-height: 1.1; }
.s17-post-date span { font-size: 12px; color: #97A1B0; }
.s17-post-body { padding: 14px 0; display: flex; flex-direction: column; }
.s17-post-body h3 { font-size: 16.5px; line-height: 1.5; color: var(--s17-ink); }
.s17-post-body p { font-size: 13.5px; color: var(--s17-ink-soft); margin: 6px 0 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.s17-post-more { margin-top: auto; font-size: 13px; color: var(--s17-orange); font-weight: 600; }
.s17-post-media { overflow: hidden; }
.s17-post-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.s17-post:hover .s17-post-media img { transform: scale(1.05); }
.s17-post-placeholder {
    width: 100%; height: 100%; min-height: 118px; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--s17-blue-deep), var(--s17-blue));
    color: rgba(255,255,255,.85); font-size: 18px; letter-spacing: 3px; font-weight: 800;
}
.s17-post-placeholder em { font-style: normal; }

/* 空状态 / 分页 */
.s17-empty {
    text-align: center; background: var(--s17-white); border: 1px dashed #C9D3E4;
    border-radius: var(--s17-radius); padding: 44px 20px;
}
.s17-empty strong { display: block; font-size: 18px; color: var(--s17-blue-deep); margin-bottom: 6px; }
.s17-empty p { color: var(--s17-ink-soft); font-size: 14px; margin-bottom: 16px; }
.s17-pagination-wrap { margin-top: 26px; display: flex; justify-content: center; }
.s17-pagination { display: flex; flex-wrap: wrap; gap: 8px; }
.s17-pagination .page-item .page-link {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 38px; height: 38px; padding: 0 12px; border-radius: 6px;
    border: 1px solid var(--s17-line); background: var(--s17-white);
    font-size: 14px; color: var(--s17-ink-soft);
}
.s17-pagination .page-item .page-link:hover { border-color: var(--s17-blue); color: var(--s17-blue); }
.s17-pagination .page-item.active .page-link { background: var(--s17-blue); border-color: var(--s17-blue); color: #fff; }
.s17-pagination .page-item.disabled .page-link { opacity: .45; pointer-events: none; }
.s17-pagination .page-item span.page-link { background: var(--s17-bg); }

/* ---------- 文章详情 ---------- */
.s17-article-head { background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); padding: 24px 26px; margin-bottom: 22px; }
.s17-article-cat {
    display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--s17-orange);
    background: #FFF1E8; border-radius: 4px; padding: 3px 10px; margin-bottom: 12px;
}
.s17-article-title { font-size: 26px; line-height: 1.4; color: var(--s17-blue-deep); margin-bottom: 12px; }
.s17-article-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: #97A1B0; }
.s17-article-meta time { color: #97A1B0; }
.s17-article-meta em { font-style: normal; color: var(--s17-orange); }
.s17-article-abstract {
    margin: 14px 0 0; padding: 12px 16px; background: var(--s17-bg);
    border-left: 3px solid var(--s17-orange); border-radius: 0 6px 6px 0;
    font-size: 14px; color: var(--s17-ink-soft);
}

.s17-article-content {
    background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius);
    padding: 26px 28px 30px; font-size: 15.5px; line-height: 1.9; color: #333A45;
    overflow-wrap: break-word;
}
.s17-article-content h2 { font-size: 21px; margin: 26px 0 12px; padding-left: 12px; border-left: 4px solid var(--s17-orange); color: var(--s17-blue-deep); }
.s17-article-content h3 { font-size: 18px; margin: 22px 0 10px; color: var(--s17-blue-deep); }
.s17-article-content h4 { font-size: 16px; margin: 18px 0 8px; }
.s17-article-content p { margin: 0 0 14px; }
.s17-article-content img { border-radius: 6px; margin: 6px auto 14px; }
.s17-article-content ul { list-style: disc; padding-left: 24px; margin: 0 0 14px; }
.s17-article-content ol { list-style: decimal; padding-left: 24px; margin: 0 0 14px; }
.s17-article-content li { margin-bottom: 5px; }
.s17-article-content blockquote {
    margin: 0 0 14px; padding: 12px 18px; border-left: 4px solid var(--s17-blue);
    background: var(--s17-bg); color: var(--s17-ink-soft); border-radius: 0 6px 6px 0;
}
.s17-article-content table { width: 100%; border-collapse: collapse; margin: 0 0 14px; font-size: 14px; }
.s17-article-content th, .s17-article-content td { border: 1px solid var(--s17-line); padding: 8px 12px; text-align: left; }
.s17-article-content th { background: var(--s17-bg); color: var(--s17-blue-deep); }
.s17-article-content a { color: var(--s17-blue); text-decoration: underline; }
.s17-article-pages { margin-top: 18px; }

.s17-article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 18px 0; font-size: 13.5px; color: var(--s17-ink-soft); }
.s17-article-tags a { background: var(--s17-bg); border: 1px solid var(--s17-line); border-radius: 999px; padding: 4px 12px; font-size: 13px; color: var(--s17-ink-soft); }
.s17-article-tags a:hover { background: var(--s17-blue); border-color: var(--s17-blue); color: #fff; }

.s17-article-neighbor { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 6px 0 22px; }
.s17-neighbor-item {
    display: flex; flex-direction: column; gap: 3px; padding: 14px 18px;
    background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: 8px;
    font-size: 14px; color: var(--s17-ink);
}
.s17-neighbor-item span { font-size: 12px; color: #A7B3C7; }
.s17-neighbor-item strong { font-weight: 600; color: var(--s17-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s17-neighbor-item:hover { border-color: var(--s17-blue); box-shadow: var(--s17-shadow); }
.s17-neighbor-item--next { text-align: right; }

.s17-related { margin-top: 8px; }

/* ---------- 图集页 ---------- */
.s17-gallery-stage { margin: 0 0 16px; background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); overflow: hidden; }
.s17-gallery-stage img { width: 100%; aspect-ratio: 3 / 2; object-fit: contain; background: #0B1526; max-height: 560px; }
.s17-gallery-stage figcaption { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; font-size: 13px; color: var(--s17-ink-soft); }
.s17-gallery-counter { font-weight: 700; color: var(--s17-blue); }
.s17-gallery-thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; margin-bottom: 18px; }
.s17-gallery-thumb { position: relative; display: block; border-radius: 8px; overflow: hidden; border: 2px solid transparent; }
.s17-gallery-thumb img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.s17-gallery-thumb span {
    position: absolute; right: 6px; bottom: 6px; background: rgba(8, 36, 82, .78);
    color: #fff; font-size: 12px; border-radius: 4px; padding: 1px 7px;
}
.s17-gallery-thumb.is-active { border-color: var(--s17-orange); }
.s17-gallery-pagination { justify-content: flex-start; }

/* ---------- 单页 ---------- */
.s17-single-article { background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); margin-bottom: 22px; }
.s17-single-lead { font-size: 16px; color: var(--s17-blue-deep); font-weight: 500; }
.s17-feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 16px 0; }
.s17-feature { background: var(--s17-bg); border-radius: 8px; padding: 16px 18px; }
.s17-feature h3 { font-size: 16px; color: var(--s17-blue-deep); margin-bottom: 6px; }
.s17-feature p { font-size: 13.5px; color: var(--s17-ink-soft); margin: 0; }
.s17-single-cta {
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
    background: linear-gradient(120deg, var(--s17-blue-deep), var(--s17-blue));
    border-radius: var(--s17-radius); padding: 26px 30px;
}
.s17-single-cta h2 { color: #fff; font-size: 20px; margin-bottom: 6px; }
.s17-single-cta p { color: rgba(255,255,255,.78); font-size: 14px; margin: 0; }
.s17-single-cta-actions { display: flex; gap: 12px; flex-shrink: 0; }

/* ---------- 搜索页 ---------- */
.s17-search-panel { margin-bottom: 20px; }
.s17-search-form { display: flex; gap: 10px; }
.s17-search-form input {
    flex: 1; min-width: 0; border: 1px solid var(--s17-line); border-radius: 6px;
    padding: 10px 14px; font-size: 14px; outline: none; background: var(--s17-bg);
}
.s17-search-form input:focus { border-color: var(--s17-blue); background: var(--s17-white); }
.s17-search-hint { font-size: 12.5px; color: #A7B3C7; margin: 10px 0 0; }
.s17-search-suggest, .s17-search-latest, .s17-so-section { margin-top: 26px; }
.s17-so-cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.s17-so-cat-card {
    position: relative; display: flex; flex-direction: column; gap: 4px;
    border: 1px solid var(--s17-line); border-radius: 8px; padding: 16px 40px 16px 18px;
    background: var(--s17-white); transition: all .2s ease;
}
.s17-so-cat-card strong { font-size: 16px; color: var(--s17-blue-deep); }
.s17-so-cat-card span { font-size: 13px; color: var(--s17-ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s17-so-cat-card em { position: absolute; right: 16px; top: 50%; transform: translateY(-50%); font-style: normal; color: #C2CBD9; transition: transform .2s ease; }
.s17-so-cat-card:hover { border-color: var(--s17-blue); box-shadow: var(--s17-shadow); }
.s17-so-cat-card:hover em { color: var(--s17-orange); transform: translateY(-50%) translateX(3px); }

/* ---------- 404 ---------- */
.s17-404 { padding: 70px 0 80px; text-align: center; }
.s17-404-inner { position: relative; }
.s17-404-code {
    font-size: 110px; font-weight: 800; line-height: 1; margin: 0 0 8px;
    background: linear-gradient(120deg, var(--s17-blue), var(--s17-orange));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.s17-404-title { font-size: 26px; color: var(--s17-blue-deep); margin-bottom: 10px; }
.s17-404-desc { color: var(--s17-ink-soft); max-width: 520px; margin: 0 auto 22px; }
.s17-404-search { display: flex; gap: 10px; max-width: 460px; margin: 0 auto 20px; }
.s17-404-search input {
    flex: 1; min-width: 0; border: 1px solid var(--s17-line); border-radius: 6px;
    padding: 10px 14px; outline: none; background: var(--s17-bg);
}
.s17-404-search input:focus { border-color: var(--s17-blue); background: var(--s17-white); }
.s17-404-search button { border: 0; border-radius: 6px; background: var(--s17-orange); color: #fff; padding: 10px 20px; font-weight: 600; }
.s17-404-search button:hover { background: var(--s17-orange-deep); }
.s17-404-actions { display: flex; justify-content: center; gap: 14px; margin-bottom: 34px; }
.s17-404-recommend { max-width: 560px; margin: 0 auto; text-align: left; background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); padding: 20px 24px; }
.s17-404-recommend h2 { font-size: 16px; color: var(--s17-blue-deep); margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px dashed var(--s17-line); }
.s17-404-recommend li { padding: 6px 0; border-bottom: 1px dashed var(--s17-line); }
.s17-404-recommend li:last-child { border-bottom: 0; }
.s17-404-recommend a { color: var(--s17-ink-soft); }
.s17-404-recommend a::before { content: "·"; color: var(--s17-orange); margin-right: 8px; font-weight: 800; }
.s17-404-recommend a:hover { color: var(--s17-blue); }

/* ---------- footer 服务承诺 ---------- */
.s17-footer-promise { background: var(--s17-blue-deep); border-bottom: 1px solid rgba(255,255,255,.08); }
.s17-promise-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 26px 16px; }
.s17-promise-item { display: flex; align-items: center; gap: 12px; color: #fff; }
.s17-promise-icon { width: 46px; height: 46px; border-radius: 50%; background: rgba(255,255,255,.09); display: flex; align-items: center; justify-content: center; color: #FFB48A; flex-shrink: 0; }
.s17-promise-item strong { display: block; font-size: 15px; }
.s17-promise-item small { font-size: 12px; color: rgba(255,255,255,.6); }

/* ---------- footer ---------- */
.s17-footer { background: var(--s17-blue-dark); color: rgba(255,255,255,.72); font-size: 14px; }
.s17-footer-grid { display: grid; grid-template-columns: 4fr 2fr 2fr 2fr; gap: 34px; padding: 46px 0 30px; }
.s17-footer-brand { min-width: 0; }
.s17-brand--footer .s17-brand-badge { color: #fff; }
.s17-brand--footer .s17-brand-text strong { color: #fff; }
.s17-brand--footer .s17-brand-text small { color: rgba(255,255,255,.5); }
.s17-footer-intro { margin: 16px 0 14px; font-size: 13.5px; line-height: 1.8; color: rgba(255,255,255,.6); }
.s17-footer-contact { display: flex; flex-direction: column; gap: 5px; font-size: 13.5px; }
.s17-footer-contact a { color: #FFB48A; }
.s17-footer-contact a:hover { color: var(--s17-orange); }
.s17-footer-col h3 { color: #fff; font-size: 16px; margin-bottom: 14px; padding-bottom: 10px; position: relative; }
.s17-footer-col h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--s17-orange); }
.s17-footer-col li { margin-bottom: 9px; }
.s17-footer-col a { color: rgba(255,255,255,.62); font-size: 13.5px; }
.s17-footer-col a:hover { color: #fff; padding-left: 3px; }
.s17-footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1); padding: 16px 0 22px;
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 20px;
    font-size: 12.5px; color: rgba(255,255,255,.42);
}
.s17-footer-bottom a { color: rgba(255,255,255,.55); }
.s17-footer-bottom a:hover { color: #fff; }

/* ---------- 浮动工具条 ---------- */
.s17-float-bar {
    position: fixed; right: 18px; bottom: 90px; z-index: 80;
    display: flex; flex-direction: column; gap: 8px;
}
.s17-float-item {
    width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--s17-line);
    background: var(--s17-white); color: var(--s17-blue);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    font-size: 11px; font-weight: 700; box-shadow: 0 6px 16px rgba(10, 46, 110, .12);
    position: relative; transition: all .2s ease; padding: 0;
}
.s17-float-item:hover { background: var(--s17-orange); border-color: var(--s17-orange); color: #fff; }
.s17-float-pop {
    position: absolute; right: 56px; top: 50%; transform: translateY(-50%);
    background: var(--s17-blue-dark); color: #fff; font-size: 12.5px; font-weight: 500;
    padding: 7px 13px; border-radius: 6px; white-space: nowrap;
    opacity: 0; visibility: hidden; transition: all .2s ease; pointer-events: none;
}
.s17-float-item:hover .s17-float-pop { opacity: 1; visibility: visible; }

/* ---------- demo 示例页 ---------- */
.s17-demo-body { padding: 34px 16px 56px; max-width: 900px; }
.s17-demo-section { background: var(--s17-white); border: 1px solid var(--s17-line); border-radius: var(--s17-radius); padding: 24px 26px; margin-bottom: 22px; }
.s17-demo-section > h2 { font-size: 20px; color: var(--s17-blue-deep); padding-bottom: 10px; margin-bottom: 16px; border-bottom: 2px solid var(--s17-bg); }
.s17-demo-row { display: flex; flex-wrap: wrap; gap: 12px; }
.s17-demo-figure { margin: 0 0 18px; }
.s17-demo-figure img { border-radius: 8px; width: 100%; }
.s17-demo-figure figcaption { font-size: 13px; color: var(--s17-ink-soft); margin-top: 8px; text-align: center; }
.s17-biz-row { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 18px; align-items: center; }
.s17-biz-media { margin: 0; }
.s17-biz-media img { border-radius: 8px; }
.s17-biz-body h3 { font-size: 17px; color: var(--s17-blue-deep); margin-bottom: 8px; }
.s17-demo-brand { grid-template-columns: repeat(3, 1fr); }

/* ---------- 滚动显现动画 ---------- */
.s17-reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.s17-reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .s17-reveal { opacity: 1; transform: none; transition: none; }
    .s17-hero-slide { transition: none; }
    html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .s17-services-grid { grid-template-columns: repeat(2, 1fr); }
    .s17-cases-grid { grid-template-columns: repeat(2, 1fr); }
    .s17-main-grid { grid-template-columns: 1fr; }
    .s17-layout { grid-template-columns: 1fr; }
    .s17-about { grid-template-columns: 1fr; gap: 30px; }
    .s17-about-badge { right: 10px; }
    .s17-footer-grid { grid-template-columns: 1fr 1fr; }
    .s17-nav-item > a { padding: 22px 12px; font-size: 15px; }
    .s17-search input { width: 110px; }
    .s17-hotline-text small { display: none; }
}

@media (max-width: 768px) {
    .s17-topbar-welcome { display: none; }
    .s17-topbar-inner { justify-content: center; }
    .s17-header-inner { flex-wrap: wrap; min-height: 64px; gap: 10px; padding-top: 8px; padding-bottom: 8px; }
    .s17-brand-text strong { font-size: 18px; }
    .s17-brand-text small { font-size: 10px; }
    .s17-nav {
        position: fixed; top: 0; right: -290px; width: 280px; height: 100vh; height: 100dvh;
        background: var(--s17-white); z-index: 92; padding: 74px 18px 30px;
        transition: right .28s ease; overflow-y: auto; box-shadow: -8px 0 30px rgba(8,36,82,.18);
    }
    body.nav-open .s17-nav { right: 0; }
    body.nav-open .s17-nav-overlay { display: block; }
    .s17-nav-list { flex-direction: column; align-items: stretch; gap: 0; }
    .s17-nav-item > a { padding: 13px 6px; border-bottom: 1px solid var(--s17-line); font-size: 15px; }
    .s17-nav-item > a::after { display: none; }
    .s17-sub-panel {
        position: static; transform: none; opacity: 1; visibility: visible;
        box-shadow: none; border: 0; border-radius: 0; padding: 0 0 6px 14px; min-width: 0; display: none;
    }
    .s17-nav-item.is-open .s17-sub-panel { display: block; }
    .nav-sub-toggle {
        display: block; position: absolute; right: 4px; top: 8px; width: 34px; height: 34px;
        border: 0; background: transparent;
    }
    .nav-sub-toggle::before {
        content: ""; position: absolute; left: 10px; top: 14px;
        width: 10px; height: 2px; background: var(--s17-blue);
        box-shadow: 0 4px 0 var(--s17-blue); transform: rotate(90deg); transition: transform .2s ease;
    }
    .s17-nav-item.is-open .nav-sub-toggle::before { transform: rotate(0); }
    .s17-sub-list a { padding: 8px 10px; }
    .s17-search { display: none; }
    .s17-hotline { display: none; }
    .nav-toggle { display: flex; margin-left: auto; }
    .s17-hero-stage { height: 400px; }
    .s17-hero-slogan { font-size: 30px; }
    .s17-hero-slogan em { font-size: 20px; }
    .s17-hero-sub { font-size: 14px; }
    .s17-hero-arrow { display: none; }
    .s17-stats ul { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
    .s17-stats li + li::before { display: none; }
    .s17-stats strong { font-size: 34px; }
    .s17-services, .s17-cases, .s17-about { padding-top: 40px; padding-bottom: 40px; }
    .s17-cases-grid { grid-auto-rows: 160px; gap: 12px; }
    .s17-case-card, .s17-cases .s17-case-card:not(.s17-case-card--main) { grid-column: span 2; grid-row: span 1; }
    .s17-case-card--main { grid-row: span 2 !important; }
    .s17-promise-grid { grid-template-columns: 1fr 1fr; padding: 20px 16px; }
    .s17-partner-wall { grid-template-columns: repeat(2, 1fr); }
    .s17-article-neighbor { grid-template-columns: 1fr; }
    .s17-feature-grid { grid-template-columns: 1fr; }
    .s17-single-cta { flex-direction: column; align-items: flex-start; }
    .s17-so-cat-grid { grid-template-columns: 1fr; }
    .s17-post-link { grid-template-columns: 76px minmax(0, 1fr); }
    .s17-post-media { display: none; }
    .s17-feed-item { grid-template-columns: 130px minmax(0, 1fr); gap: 12px; }
    .s17-feed-body { padding: 10px 14px 10px 0; }
    .s17-strip-title { font-size: 22px; }
    .s17-article-title { font-size: 21px; }
    .s17-article-content { padding: 18px 16px 22px; font-size: 15px; }
}

@media (max-width: 560px) {
    body { font-size: 14.5px; }
    .s17-hero-stage { height: 340px; }
    .s17-hero-slogan { font-size: 24px; }
    .s17-hero-slogan em { font-size: 16px; }
    .s17-hero-btns .s17-btn { padding: 8px 18px; font-size: 14px; }
    .s17-services-grid { grid-template-columns: 1fr; }
    .s17-sec-head h2 { font-size: 21px; }
    .s17-stats ul { grid-template-columns: 1fr 1fr; }
    .s17-promise-grid { grid-template-columns: 1fr; }
    .s17-footer-grid { grid-template-columns: 1fr; gap: 26px; }
    .s17-footer-bottom { flex-direction: column; }
    .s17-feed-item { grid-template-columns: 1fr; }
    .s17-feed-thumb { aspect-ratio: 16 / 9; }
    .s17-feed-body { padding: 0 16px 16px; }
    .s17-post-link { grid-template-columns: 1fr; }
    .s17-post-date { flex-direction: row; gap: 8px; border-right: 0; border-bottom: 1px solid var(--s17-line); padding: 8px 14px; }
    .s17-post-date strong { font-size: 18px; }
    .s17-post-body { padding: 12px 14px; }
    .s17-case-card, .s17-cases .s17-case-card:not(.s17-case-card--main) { grid-column: span 2; }
    .s17-case-card--main { grid-row: span 1 !important; }
    .s17-cases-grid { grid-auto-rows: 150px; }
    .s17-float-bar { right: 12px; bottom: 76px; }
    .s17-404-code { font-size: 84px; }
    .s17-demo-brand { grid-template-columns: 1fr; }
}

/* ---------- 打印优化 ---------- */
@media print {
    .s17-topbar, .s17-header, .s17-footer-promise, .s17-footer, .s17-float-bar,
    .s17-hero-arrow, .s17-hero-dots, .s17-ad, .s17-nav-overlay { display: none !important; }
    .s17-hero-stage { height: auto; }
    body { color: #000; }
}